Revert "Delete .venv directory"

This reverts commit 5a2693bd9f.

.venv/lib/python3.9/site-packages/aiohttp/.hash/_cparser.pxd.hash

@@ -0,0 +1 @@
+b60c37d122fa91049ccf318c94c871d82ba17ff3bc3fc64f8a65426fce7120b7  /home/runner/work/aiohttp/aiohttp/aiohttp/_cparser.pxd

.venv/lib/python3.9/site-packages/aiohttp/.hash/_find_header.pxd.hash

@@ -0,0 +1 @@
+d067f01423cddb3c442933b5fcc039b18ab651fcec1bc91c577693aafc25cf78  /home/runner/work/aiohttp/aiohttp/aiohttp/_find_header.pxd

.venv/lib/python3.9/site-packages/aiohttp/.hash/_frozenlist.pyx.hash

@@ -0,0 +1 @@
+043f0b704444c6c59da38ab3bae43ce1ff8bfe91d5ce45103b494400e7b71688  /home/runner/work/aiohttp/aiohttp/aiohttp/_frozenlist.pyx

.venv/lib/python3.9/site-packages/aiohttp/.hash/_helpers.pyi.hash

@@ -0,0 +1 @@
+6682a22524b9d4fc442e123672622be7bdfb6238d9709b7b15b2113b7ca6d52b  /home/runner/work/aiohttp/aiohttp/aiohttp/_helpers.pyi

.venv/lib/python3.9/site-packages/aiohttp/.hash/_helpers.pyx.hash

@@ -0,0 +1 @@
+5de2db35fb795ffe227e2f1007c8ba4f2ad1b9aca28cc48edc80c779203cf6e3  /home/runner/work/aiohttp/aiohttp/aiohttp/_helpers.pyx

.venv/lib/python3.9/site-packages/aiohttp/.hash/_http_parser.pyx.hash

@@ -0,0 +1 @@
+f0688fb2e81ea92bf0a17822260d9591a30979101da12a4b873113fc459fb5fa  /home/runner/work/aiohttp/aiohttp/aiohttp/_http_parser.pyx

.venv/lib/python3.9/site-packages/aiohttp/.hash/_http_writer.pyx.hash

@@ -0,0 +1 @@
+4e7b7f7baa5c65954e85a5b7c8db7786a0ec3498081b0a9420f792a803086281  /home/runner/work/aiohttp/aiohttp/aiohttp/_http_writer.pyx

.venv/lib/python3.9/site-packages/aiohttp/.hash/_websocket.pyx.hash

@@ -0,0 +1 @@
+d57b8e48d0c26f20ebcc5e6e300da2b2a6aeb12b3c9768d64cb0e53432ccf48a  /home/runner/work/aiohttp/aiohttp/aiohttp/_websocket.pyx

.venv/lib/python3.9/site-packages/aiohttp/.hash/frozenlist.pyi.hash

@@ -0,0 +1 @@
+6d134aa08da3d6ba0f76d81fc7f9ec7836a7bc1a99b1950d1c3aa65ed7e3951a  /home/runner/work/aiohttp/aiohttp/aiohttp/frozenlist.pyi

.venv/lib/python3.9/site-packages/aiohttp/.hash/hdrs.py.hash

@@ -0,0 +1 @@
+5ac8c3258003604c8993bfa8357361036337330b722e4849024972ccbb5c95f5  /home/runner/work/aiohttp/aiohttp/aiohttp/hdrs.py

.venv/lib/python3.9/site-packages/aiohttp/.hash/signals.pyi.hash

@@ -0,0 +1 @@
+48b4df50f771d7e8385524ea0a7057ca1482974f8a43e674982b04b08bc17d5e  /home/runner/work/aiohttp/aiohttp/aiohttp/signals.pyi

.venv/lib/python3.9/site-packages/aiohttp/__init__.py

@@ -0,0 +1,217 @@
+__version__ = "3.7.4.post0"
+
+from typing import Tuple
+
+from . import hdrs as hdrs
+from .client import (
+    BaseConnector as BaseConnector,
+    ClientConnectionError as ClientConnectionError,
+    ClientConnectorCertificateError as ClientConnectorCertificateError,
+    ClientConnectorError as ClientConnectorError,
+    ClientConnectorSSLError as ClientConnectorSSLError,
+    ClientError as ClientError,
+    ClientHttpProxyError as ClientHttpProxyError,
+    ClientOSError as ClientOSError,
+    ClientPayloadError as ClientPayloadError,
+    ClientProxyConnectionError as ClientProxyConnectionError,
+    ClientRequest as ClientRequest,
+    ClientResponse as ClientResponse,
+    ClientResponseError as ClientResponseError,
+    ClientSession as ClientSession,
+    ClientSSLError as ClientSSLError,
+    ClientTimeout as ClientTimeout,
+    ClientWebSocketResponse as ClientWebSocketResponse,
+    ContentTypeError as ContentTypeError,
+    Fingerprint as Fingerprint,
+    InvalidURL as InvalidURL,
+    NamedPipeConnector as NamedPipeConnector,
+    RequestInfo as RequestInfo,
+    ServerConnectionError as ServerConnectionError,
+    ServerDisconnectedError as ServerDisconnectedError,
+    ServerFingerprintMismatch as ServerFingerprintMismatch,
+    ServerTimeoutError as ServerTimeoutError,
+    TCPConnector as TCPConnector,
+    TooManyRedirects as TooManyRedirects,
+    UnixConnector as UnixConnector,
+    WSServerHandshakeError as WSServerHandshakeError,
+    request as request,
+)
+from .cookiejar import CookieJar as CookieJar, DummyCookieJar as DummyCookieJar
+from .formdata import FormData as FormData
+from .helpers import BasicAuth as BasicAuth, ChainMapProxy as ChainMapProxy
+from .http import (
+    HttpVersion as HttpVersion,
+    HttpVersion10 as HttpVersion10,
+    HttpVersion11 as HttpVersion11,
+    WebSocketError as WebSocketError,
+    WSCloseCode as WSCloseCode,
+    WSMessage as WSMessage,
+    WSMsgType as WSMsgType,
+)
+from .multipart import (
+    BadContentDispositionHeader as BadContentDispositionHeader,
+    BadContentDispositionParam as BadContentDispositionParam,
+    BodyPartReader as BodyPartReader,
+    MultipartReader as MultipartReader,
+    MultipartWriter as MultipartWriter,
+    content_disposition_filename as content_disposition_filename,
+    parse_content_disposition as parse_content_disposition,
+)
+from .payload import (
+    PAYLOAD_REGISTRY as PAYLOAD_REGISTRY,
+    AsyncIterablePayload as AsyncIterablePayload,
+    BufferedReaderPayload as BufferedReaderPayload,
+    BytesIOPayload as BytesIOPayload,
+    BytesPayload as BytesPayload,
+    IOBasePayload as IOBasePayload,
+    JsonPayload as JsonPayload,
+    Payload as Payload,
+    StringIOPayload as StringIOPayload,
+    StringPayload as StringPayload,
+    TextIOPayload as TextIOPayload,
+    get_payload as get_payload,
+    payload_type as payload_type,
+)
+from .payload_streamer import streamer as streamer
+from .resolver import (
+    AsyncResolver as AsyncResolver,
+    DefaultResolver as DefaultResolver,
+    ThreadedResolver as ThreadedResolver,
+)
+from .signals import Signal as Signal
+from .streams import (
+    EMPTY_PAYLOAD as EMPTY_PAYLOAD,
+    DataQueue as DataQueue,
+    EofStream as EofStream,
+    FlowControlDataQueue as FlowControlDataQueue,
+    StreamReader as StreamReader,
+)
+from .tracing import (
+    TraceConfig as TraceConfig,
+    TraceConnectionCreateEndParams as TraceConnectionCreateEndParams,
+    TraceConnectionCreateStartParams as TraceConnectionCreateStartParams,
+    TraceConnectionQueuedEndParams as TraceConnectionQueuedEndParams,
+    TraceConnectionQueuedStartParams as TraceConnectionQueuedStartParams,
+    TraceConnectionReuseconnParams as TraceConnectionReuseconnParams,
+    TraceDnsCacheHitParams as TraceDnsCacheHitParams,
+    TraceDnsCacheMissParams as TraceDnsCacheMissParams,
+    TraceDnsResolveHostEndParams as TraceDnsResolveHostEndParams,
+    TraceDnsResolveHostStartParams as TraceDnsResolveHostStartParams,
+    TraceRequestChunkSentParams as TraceRequestChunkSentParams,
+    TraceRequestEndParams as TraceRequestEndParams,
+    TraceRequestExceptionParams as TraceRequestExceptionParams,
+    TraceRequestRedirectParams as TraceRequestRedirectParams,
+    TraceRequestStartParams as TraceRequestStartParams,
+    TraceResponseChunkReceivedParams as TraceResponseChunkReceivedParams,
+)
+
+__all__: Tuple[str, ...] = (
+    "hdrs",
+    # client
+    "BaseConnector",
+    "ClientConnectionError",
+    "ClientConnectorCertificateError",
+    "ClientConnectorError",
+    "ClientConnectorSSLError",
+    "ClientError",
+    "ClientHttpProxyError",
+    "ClientOSError",
+    "ClientPayloadError",
+    "ClientProxyConnectionError",
+    "ClientResponse",
+    "ClientRequest",
+    "ClientResponseError",
+    "ClientSSLError",
+    "ClientSession",
+    "ClientTimeout",
+    "ClientWebSocketResponse",
+    "ContentTypeError",
+    "Fingerprint",
+    "InvalidURL",
+    "RequestInfo",
+    "ServerConnectionError",
+    "ServerDisconnectedError",
+    "ServerFingerprintMismatch",
+    "ServerTimeoutError",
+    "TCPConnector",
+    "TooManyRedirects",
+    "UnixConnector",
+    "NamedPipeConnector",
+    "WSServerHandshakeError",
+    "request",
+    # cookiejar
+    "CookieJar",
+    "DummyCookieJar",
+    # formdata
+    "FormData",
+    # helpers
+    "BasicAuth",
+    "ChainMapProxy",
+    # http
+    "HttpVersion",
+    "HttpVersion10",
+    "HttpVersion11",
+    "WSMsgType",
+    "WSCloseCode",
+    "WSMessage",
+    "WebSocketError",
+    # multipart
+    "BadContentDispositionHeader",
+    "BadContentDispositionParam",
+    "BodyPartReader",
+    "MultipartReader",
+    "MultipartWriter",
+    "content_disposition_filename",
+    "parse_content_disposition",
+    # payload
+    "AsyncIterablePayload",
+    "BufferedReaderPayload",
+    "BytesIOPayload",
+    "BytesPayload",
+    "IOBasePayload",
+    "JsonPayload",
+    "PAYLOAD_REGISTRY",
+    "Payload",
+    "StringIOPayload",
+    "StringPayload",
+    "TextIOPayload",
+    "get_payload",
+    "payload_type",
+    # payload_streamer
+    "streamer",
+    # resolver
+    "AsyncResolver",
+    "DefaultResolver",
+    "ThreadedResolver",
+    # signals
+    "Signal",
+    "DataQueue",
+    "EMPTY_PAYLOAD",
+    "EofStream",
+    "FlowControlDataQueue",
+    "StreamReader",
+    # tracing
+    "TraceConfig",
+    "TraceConnectionCreateEndParams",
+    "TraceConnectionCreateStartParams",
+    "TraceConnectionQueuedEndParams",
+    "TraceConnectionQueuedStartParams",
+    "TraceConnectionReuseconnParams",
+    "TraceDnsCacheHitParams",
+    "TraceDnsCacheMissParams",
+    "TraceDnsResolveHostEndParams",
+    "TraceDnsResolveHostStartParams",
+    "TraceRequestChunkSentParams",
+    "TraceRequestEndParams",
+    "TraceRequestExceptionParams",
+    "TraceRequestRedirectParams",
+    "TraceRequestStartParams",
+    "TraceResponseChunkReceivedParams",
+)
+
+try:
+    from .worker import GunicornUVLoopWebWorker, GunicornWebWorker
+
+    __all__ += ("GunicornWebWorker", "GunicornUVLoopWebWorker")
+except ImportError:  # pragma: no cover
+    pass

.venv/lib/python3.9/site-packages/aiohttp/_cparser.pxd

@@ -0,0 +1,140 @@
+from libc.stdint cimport uint16_t, uint32_t, uint64_t
+
+
+cdef extern from "../vendor/http-parser/http_parser.h":
+    ctypedef int (*http_data_cb) (http_parser*,
+                                  const char *at,
+                                  size_t length) except -1
+
+    ctypedef int (*http_cb) (http_parser*) except -1
+
+    struct http_parser:
+        unsigned int type
+        unsigned int flags
+        unsigned int state
+        unsigned int header_state
+        unsigned int index
+
+        uint32_t nread
+        uint64_t content_length
+
+        unsigned short http_major
+        unsigned short http_minor
+        unsigned int status_code
+        unsigned int method
+        unsigned int http_errno
+
+        unsigned int upgrade
+
+        void *data
+
+    struct http_parser_settings:
+        http_cb      on_message_begin
+        http_data_cb on_url
+        http_data_cb on_status
+        http_data_cb on_header_field
+        http_data_cb on_header_value
+        http_cb      on_headers_complete
+        http_data_cb on_body
+        http_cb      on_message_complete
+        http_cb      on_chunk_header
+        http_cb      on_chunk_complete
+
+    enum http_parser_type:
+        HTTP_REQUEST,
+        HTTP_RESPONSE,
+        HTTP_BOTH
+
+    enum http_errno:
+        HPE_OK,
+        HPE_CB_message_begin,
+        HPE_CB_url,
+        HPE_CB_header_field,
+        HPE_CB_header_value,
+        HPE_CB_headers_complete,
+        HPE_CB_body,
+        HPE_CB_message_complete,
+        HPE_CB_status,
+        HPE_CB_chunk_header,
+        HPE_CB_chunk_complete,
+        HPE_INVALID_EOF_STATE,
+        HPE_HEADER_OVERFLOW,
+        HPE_CLOSED_CONNECTION,
+        HPE_INVALID_VERSION,
+        HPE_INVALID_STATUS,
+        HPE_INVALID_METHOD,
+        HPE_INVALID_URL,
+        HPE_INVALID_HOST,
+        HPE_INVALID_PORT,
+        HPE_INVALID_PATH,
+        HPE_INVALID_QUERY_STRING,
+        HPE_INVALID_FRAGMENT,
+        HPE_LF_EXPECTED,
+        HPE_INVALID_HEADER_TOKEN,
+        HPE_INVALID_CONTENT_LENGTH,
+        HPE_INVALID_CHUNK_SIZE,
+        HPE_INVALID_CONSTANT,
+        HPE_INVALID_INTERNAL_STATE,
+        HPE_STRICT,
+        HPE_PAUSED,
+        HPE_UNKNOWN
+
+    enum flags:
+        F_CHUNKED,
+        F_CONNECTION_KEEP_ALIVE,
+        F_CONNECTION_CLOSE,
+        F_CONNECTION_UPGRADE,
+        F_TRAILING,
+        F_UPGRADE,
+        F_SKIPBODY,
+        F_CONTENTLENGTH
+
+    enum http_method:
+        DELETE, GET, HEAD, POST, PUT, CONNECT, OPTIONS, TRACE, COPY,
+        LOCK, MKCOL, MOVE, PROPFIND, PROPPATCH, SEARCH, UNLOCK, BIND,
+        REBIND, UNBIND, ACL, REPORT, MKACTIVITY, CHECKOUT, MERGE,
+        MSEARCH, NOTIFY, SUBSCRIBE, UNSUBSCRIBE, PATCH, PURGE, MKCALENDAR,
+        LINK, UNLINK
+
+    void http_parser_init(http_parser *parser, http_parser_type type)
+
+    size_t http_parser_execute(http_parser *parser,
+                               const http_parser_settings *settings,
+                               const char *data,
+                               size_t len)
+
+    int http_should_keep_alive(const http_parser *parser)
+
+    void http_parser_settings_init(http_parser_settings *settings)
+
+    const char *http_errno_name(http_errno err)
+    const char *http_errno_description(http_errno err)
+    const char *http_method_str(http_method m)
+
+    # URL Parser
+
+    enum http_parser_url_fields:
+        UF_SCHEMA   = 0,
+        UF_HOST     = 1,
+        UF_PORT     = 2,
+        UF_PATH     = 3,
+        UF_QUERY    = 4,
+        UF_FRAGMENT = 5,
+        UF_USERINFO = 6,
+        UF_MAX      = 7
+
+    struct http_parser_url_field_data:
+        uint16_t off
+        uint16_t len
+
+    struct http_parser_url:
+        uint16_t field_set
+        uint16_t port
+        http_parser_url_field_data[<int>UF_MAX] field_data
+
+    void http_parser_url_init(http_parser_url *u)
+
+    int http_parser_parse_url(const char *buf,
+                              size_t buflen,
+                              int is_connect,
+                              http_parser_url *u)

.venv/lib/python3.9/site-packages/aiohttp/_find_header.h

@@ -0,0 +1,14 @@
+#ifndef _FIND_HEADERS_H
+#define _FIND_HEADERS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int find_header(const char *str, int size);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif

.venv/lib/python3.9/site-packages/aiohttp/_find_header.pxd

@@ -0,0 +1,2 @@
+cdef extern from "_find_header.h":
+    int find_header(char *, int)

.venv/lib/python3.9/site-packages/aiohttp/_frozenlist.pyx

@@ -0,0 +1,108 @@
+from collections.abc import MutableSequence
+
+
+cdef class FrozenList:
+
+    cdef readonly bint frozen
+    cdef list _items
+
+    def __init__(self, items=None):
+        self.frozen = False
+        if items is not None:
+            items = list(items)
+        else:
+            items = []
+        self._items = items
+
+    cdef object _check_frozen(self):
+        if self.frozen:
+            raise RuntimeError("Cannot modify frozen list.")
+
+    cdef inline object _fast_len(self):
+        return len(self._items)
+
+    def freeze(self):
+        self.frozen = True
+
+    def __getitem__(self, index):
+        return self._items[index]
+
+    def __setitem__(self, index, value):
+        self._check_frozen()
+        self._items[index] = value
+
+    def __delitem__(self, index):
+        self._check_frozen()
+        del self._items[index]
+
+    def __len__(self):
+        return self._fast_len()
+
+    def __iter__(self):
+        return self._items.__iter__()
+
+    def __reversed__(self):
+        return self._items.__reversed__()
+
+    def __richcmp__(self, other, op):
+        if op == 0:  # <
+            return list(self) < other
+        if op == 1:  # <=
+            return list(self) <= other
+        if op == 2:  # ==
+            return list(self) == other
+        if op == 3:  # !=
+            return list(self) != other
+        if op == 4:  # >
+            return list(self) > other
+        if op == 5:  # =>
+            return list(self) >= other
+
+    def insert(self, pos, item):
+        self._check_frozen()
+        self._items.insert(pos, item)
+
+    def __contains__(self, item):
+        return item in self._items
+
+    def __iadd__(self, items):
+        self._check_frozen()
+        self._items += list(items)
+        return self
+
+    def index(self, item):
+        return self._items.index(item)
+
+    def remove(self, item):
+        self._check_frozen()
+        self._items.remove(item)
+
+    def clear(self):
+        self._check_frozen()
+        self._items.clear()
+
+    def extend(self, items):
+        self._check_frozen()
+        self._items += list(items)
+
+    def reverse(self):
+        self._check_frozen()
+        self._items.reverse()
+
+    def pop(self, index=-1):
+        self._check_frozen()
+        return self._items.pop(index)
+
+    def append(self, item):
+        self._check_frozen()
+        return self._items.append(item)
+
+    def count(self, item):
+        return self._items.count(item)
+
+    def __repr__(self):
+        return '<FrozenList(frozen={}, {!r})>'.format(self.frozen,
+                                                      self._items)
+
+
+MutableSequence.register(FrozenList)

.venv/lib/python3.9/site-packages/aiohttp/_headers.pxi

@@ -0,0 +1,83 @@
+# The file is autogenerated from aiohttp/hdrs.py
+# Run ./tools/gen.py to update it after the origin changing.
+
+from . import hdrs
+cdef tuple headers = (
+    hdrs.ACCEPT,
+    hdrs.ACCEPT_CHARSET,
+    hdrs.ACCEPT_ENCODING,
+    hdrs.ACCEPT_LANGUAGE,
+    hdrs.ACCEPT_RANGES,
+    hdrs.ACCESS_CONTROL_ALLOW_CREDENTIALS,
+    hdrs.ACCESS_CONTROL_ALLOW_HEADERS,
+    hdrs.ACCESS_CONTROL_ALLOW_METHODS,
+    hdrs.ACCESS_CONTROL_ALLOW_ORIGIN,
+    hdrs.ACCESS_CONTROL_EXPOSE_HEADERS,
+    hdrs.ACCESS_CONTROL_MAX_AGE,
+    hdrs.ACCESS_CONTROL_REQUEST_HEADERS,
+    hdrs.ACCESS_CONTROL_REQUEST_METHOD,
+    hdrs.AGE,
+    hdrs.ALLOW,
+    hdrs.AUTHORIZATION,
+    hdrs.CACHE_CONTROL,
+    hdrs.CONNECTION,
+    hdrs.CONTENT_DISPOSITION,
+    hdrs.CONTENT_ENCODING,
+    hdrs.CONTENT_LANGUAGE,
+    hdrs.CONTENT_LENGTH,
+    hdrs.CONTENT_LOCATION,
+    hdrs.CONTENT_MD5,
+    hdrs.CONTENT_RANGE,
+    hdrs.CONTENT_TRANSFER_ENCODING,
+    hdrs.CONTENT_TYPE,
+    hdrs.COOKIE,
+    hdrs.DATE,
+    hdrs.DESTINATION,
+    hdrs.DIGEST,
+    hdrs.ETAG,
+    hdrs.EXPECT,
+    hdrs.EXPIRES,
+    hdrs.FORWARDED,
+    hdrs.FROM,
+    hdrs.HOST,
+    hdrs.IF_MATCH,
+    hdrs.IF_MODIFIED_SINCE,
+    hdrs.IF_NONE_MATCH,
+    hdrs.IF_RANGE,
+    hdrs.IF_UNMODIFIED_SINCE,
+    hdrs.KEEP_ALIVE,
+    hdrs.LAST_EVENT_ID,
+    hdrs.LAST_MODIFIED,
+    hdrs.LINK,
+    hdrs.LOCATION,
+    hdrs.MAX_FORWARDS,
+    hdrs.ORIGIN,
+    hdrs.PRAGMA,
+    hdrs.PROXY_AUTHENTICATE,
+    hdrs.PROXY_AUTHORIZATION,
+    hdrs.RANGE,
+    hdrs.REFERER,
+    hdrs.RETRY_AFTER,
+    hdrs.SEC_WEBSOCKET_ACCEPT,
+    hdrs.SEC_WEBSOCKET_EXTENSIONS,
+    hdrs.SEC_WEBSOCKET_KEY,
+    hdrs.SEC_WEBSOCKET_KEY1,
+    hdrs.SEC_WEBSOCKET_PROTOCOL,
+    hdrs.SEC_WEBSOCKET_VERSION,
+    hdrs.SERVER,
+    hdrs.SET_COOKIE,
+    hdrs.TE,
+    hdrs.TRAILER,
+    hdrs.TRANSFER_ENCODING,
+    hdrs.URI,
+    hdrs.UPGRADE,
+    hdrs.USER_AGENT,
+    hdrs.VARY,
+    hdrs.VIA,
+    hdrs.WWW_AUTHENTICATE,
+    hdrs.WANT_DIGEST,
+    hdrs.WARNING,
+    hdrs.X_FORWARDED_FOR,
+    hdrs.X_FORWARDED_HOST,
+    hdrs.X_FORWARDED_PROTO,
+)

.venv/lib/python3.9/site-packages/aiohttp/_helpers.pyi

@@ -0,0 +1,6 @@
+from typing import Any
+
+class reify:
+    def __init__(self, wrapped: Any) -> None: ...
+    def __get__(self, inst: Any, owner: Any) -> Any: ...
+    def __set__(self, inst: Any, value: Any) -> None: ...

.venv/lib/python3.9/site-packages/aiohttp/_helpers.pyx

@@ -0,0 +1,35 @@
+cdef class reify:
+    """Use as a class method decorator.  It operates almost exactly like
+    the Python `@property` decorator, but it puts the result of the
+    method it decorates into the instance dict after the first call,
+    effectively replacing the function it decorates with an instance
+    variable.  It is, in Python parlance, a data descriptor.
+
+    """
+
+    cdef object wrapped
+    cdef object name
+
+    def __init__(self, wrapped):
+        self.wrapped = wrapped
+        self.name = wrapped.__name__
+
+    @property
+    def __doc__(self):
+        return self.wrapped.__doc__
+
+    def __get__(self, inst, owner):
+        try:
+            try:
+                return inst._cache[self.name]
+            except KeyError:
+                val = self.wrapped(inst)
+                inst._cache[self.name] = val
+                return val
+        except AttributeError:
+            if inst is None:
+                return self
+            raise
+
+    def __set__(self, inst, value):
+        raise AttributeError("reified property is read-only")

.venv/lib/python3.9/site-packages/aiohttp/_http_parser.pyx

@@ -0,0 +1,875 @@
+#cython: language_level=3
+#
+# Based on https://github.com/MagicStack/httptools
+#
+from __future__ import absolute_import, print_function
+
+from cpython cimport (
+    Py_buffer,
+    PyBUF_SIMPLE,
+    PyBuffer_Release,
+    PyBytes_AsString,
+    PyBytes_AsStringAndSize,
+    PyObject_GetBuffer,
+)
+from cpython.mem cimport PyMem_Free, PyMem_Malloc
+from libc.limits cimport ULLONG_MAX
+from libc.string cimport memcpy
+
+from multidict import CIMultiDict as _CIMultiDict, CIMultiDictProxy as _CIMultiDictProxy
+from yarl import URL as _URL
+
+from aiohttp import hdrs
+
+from .http_exceptions import (
+    BadHttpMessage,
+    BadStatusLine,
+    ContentLengthError,
+    InvalidHeader,
+    InvalidURLError,
+    LineTooLong,
+    PayloadEncodingError,
+    TransferEncodingError,
+)
+from .http_parser import DeflateBuffer as _DeflateBuffer
+from .http_writer import (
+    HttpVersion as _HttpVersion,
+    HttpVersion10 as _HttpVersion10,
+    HttpVersion11 as _HttpVersion11,
+)
+from .streams import EMPTY_PAYLOAD as _EMPTY_PAYLOAD, StreamReader as _StreamReader
+
+cimport cython
+
+from aiohttp cimport _cparser as cparser
+
+include "_headers.pxi"
+
+from aiohttp cimport _find_header
+
+DEF DEFAULT_FREELIST_SIZE = 250
+
+cdef extern from "Python.h":
+    int PyByteArray_Resize(object, Py_ssize_t) except -1
+    Py_ssize_t PyByteArray_Size(object) except -1
+    char* PyByteArray_AsString(object)
+
+__all__ = ('HttpRequestParser', 'HttpResponseParser',
+           'RawRequestMessage', 'RawResponseMessage')
+
+cdef object URL = _URL
+cdef object URL_build = URL.build
+cdef object CIMultiDict = _CIMultiDict
+cdef object CIMultiDictProxy = _CIMultiDictProxy
+cdef object HttpVersion = _HttpVersion
+cdef object HttpVersion10 = _HttpVersion10
+cdef object HttpVersion11 = _HttpVersion11
+cdef object SEC_WEBSOCKET_KEY1 = hdrs.SEC_WEBSOCKET_KEY1
+cdef object CONTENT_ENCODING = hdrs.CONTENT_ENCODING
+cdef object EMPTY_PAYLOAD = _EMPTY_PAYLOAD
+cdef object StreamReader = _StreamReader
+cdef object DeflateBuffer = _DeflateBuffer
+
+
+cdef inline object extend(object buf, const char* at, size_t length):
+    cdef Py_ssize_t s
+    cdef char* ptr
+    s = PyByteArray_Size(buf)
+    PyByteArray_Resize(buf, s + length)
+    ptr = PyByteArray_AsString(buf)
+    memcpy(ptr + s, at, length)
+
+
+DEF METHODS_COUNT = 34;
+
+cdef list _http_method = []
+
+for i in range(METHODS_COUNT):
+    _http_method.append(
+        cparser.http_method_str(<cparser.http_method> i).decode('ascii'))
+
+
+cdef inline str http_method_str(int i):
+    if i < METHODS_COUNT:
+        return <str>_http_method[i]
+    else:
+        return "<unknown>"
+
+cdef inline object find_header(bytes raw_header):
+    cdef Py_ssize_t size
+    cdef char *buf
+    cdef int idx
+    PyBytes_AsStringAndSize(raw_header, &buf, &size)
+    idx = _find_header.find_header(buf, size)
+    if idx == -1:
+        return raw_header.decode('utf-8', 'surrogateescape')
+    return headers[idx]
+
+
+@cython.freelist(DEFAULT_FREELIST_SIZE)
+cdef class RawRequestMessage:
+    cdef readonly str method
+    cdef readonly str path
+    cdef readonly object version  # HttpVersion
+    cdef readonly object headers  # CIMultiDict
+    cdef readonly object raw_headers  # tuple
+    cdef readonly object should_close
+    cdef readonly object compression
+    cdef readonly object upgrade
+    cdef readonly object chunked
+    cdef readonly object url  # yarl.URL
+
+    def __init__(self, method, path, version, headers, raw_headers,
+                 should_close, compression, upgrade, chunked, url):
+        self.method = method
+        self.path = path
+        self.version = version
+        self.headers = headers
+        self.raw_headers = raw_headers
+        self.should_close = should_close
+        self.compression = compression
+        self.upgrade = upgrade
+        self.chunked = chunked
+        self.url = url
+
+    def __repr__(self):
+        info = []
+        info.append(("method", self.method))
+        info.append(("path", self.path))
+        info.append(("version", self.version))
+        info.append(("headers", self.headers))
+        info.append(("raw_headers", self.raw_headers))
+        info.append(("should_close", self.should_close))
+        info.append(("compression", self.compression))
+        info.append(("upgrade", self.upgrade))
+        info.append(("chunked", self.chunked))
+        info.append(("url", self.url))
+        sinfo = ', '.join(name + '=' + repr(val) for name, val in info)
+        return '<RawRequestMessage(' + sinfo + ')>'
+
+    def _replace(self, **dct):
+        cdef RawRequestMessage ret
+        ret = _new_request_message(self.method,
+                                   self.path,
+                                   self.version,
+                                   self.headers,
+                                   self.raw_headers,
+                                   self.should_close,
+                                   self.compression,
+                                   self.upgrade,
+                                   self.chunked,
+                                   self.url)
+        if "method" in dct:
+            ret.method = dct["method"]
+        if "path" in dct:
+            ret.path = dct["path"]
+        if "version" in dct:
+            ret.version = dct["version"]
+        if "headers" in dct:
+            ret.headers = dct["headers"]
+        if "raw_headers" in dct:
+            ret.raw_headers = dct["raw_headers"]
+        if "should_close" in dct:
+            ret.should_close = dct["should_close"]
+        if "compression" in dct:
+            ret.compression = dct["compression"]
+        if "upgrade" in dct:
+            ret.upgrade = dct["upgrade"]
+        if "chunked" in dct:
+            ret.chunked = dct["chunked"]
+        if "url" in dct:
+            ret.url = dct["url"]
+        return ret
+
+cdef _new_request_message(str method,
+                           str path,
+                           object version,
+                           object headers,
+                           object raw_headers,
+                           bint should_close,
+                           object compression,
+                           bint upgrade,
+                           bint chunked,
+                           object url):
+    cdef RawRequestMessage ret
+    ret = RawRequestMessage.__new__(RawRequestMessage)
+    ret.method = method
+    ret.path = path
+    ret.version = version
+    ret.headers = headers
+    ret.raw_headers = raw_headers
+    ret.should_close = should_close
+    ret.compression = compression
+    ret.upgrade = upgrade
+    ret.chunked = chunked
+    ret.url = url
+    return ret
+
+
+@cython.freelist(DEFAULT_FREELIST_SIZE)
+cdef class RawResponseMessage:
+    cdef readonly object version  # HttpVersion
+    cdef readonly int code
+    cdef readonly str reason
+    cdef readonly object headers  # CIMultiDict
+    cdef readonly object raw_headers  # tuple
+    cdef readonly object should_close
+    cdef readonly object compression
+    cdef readonly object upgrade
+    cdef readonly object chunked
+
+    def __init__(self, version, code, reason, headers, raw_headers,
+                 should_close, compression, upgrade, chunked):
+        self.version = version
+        self.code = code
+        self.reason = reason
+        self.headers = headers
+        self.raw_headers = raw_headers
+        self.should_close = should_close
+        self.compression = compression
+        self.upgrade = upgrade
+        self.chunked = chunked
+
+    def __repr__(self):
+        info = []
+        info.append(("version", self.version))
+        info.append(("code", self.code))
+        info.append(("reason", self.reason))
+        info.append(("headers", self.headers))
+        info.append(("raw_headers", self.raw_headers))
+        info.append(("should_close", self.should_close))
+        info.append(("compression", self.compression))
+        info.append(("upgrade", self.upgrade))
+        info.append(("chunked", self.chunked))
+        sinfo = ', '.join(name + '=' + repr(val) for name, val in info)
+        return '<RawResponseMessage(' + sinfo + ')>'
+
+
+cdef _new_response_message(object version,
+                           int code,
+                           str reason,
+                           object headers,
+                           object raw_headers,
+                           bint should_close,
+                           object compression,
+                           bint upgrade,
+                           bint chunked):
+    cdef RawResponseMessage ret
+    ret = RawResponseMessage.__new__(RawResponseMessage)
+    ret.version = version
+    ret.code = code
+    ret.reason = reason
+    ret.headers = headers
+    ret.raw_headers = raw_headers
+    ret.should_close = should_close
+    ret.compression = compression
+    ret.upgrade = upgrade
+    ret.chunked = chunked
+    return ret
+
+
+@cython.internal
+cdef class HttpParser:
+
+    cdef:
+        cparser.http_parser* _cparser
+        cparser.http_parser_settings* _csettings
+
+        bytearray _raw_name
+        bytearray _raw_value
+        bint      _has_value
+
+        object _protocol
+        object _loop
+        object _timer
+
+        size_t _max_line_size
+        size_t _max_field_size
+        size_t _max_headers
+        bint _response_with_body
+        bint _read_until_eof
+
+        bint    _started
+        object  _url
+        bytearray   _buf
+        str     _path
+        str     _reason
+        object  _headers
+        list    _raw_headers
+        bint    _upgraded
+        list    _messages
+        object  _payload
+        bint    _payload_error
+        object  _payload_exception
+        object  _last_error
+        bint    _auto_decompress
+        int     _limit
+
+        str     _content_encoding
+
+        Py_buffer py_buf
+
+    def __cinit__(self):
+        self._cparser = <cparser.http_parser*> \
+                                PyMem_Malloc(sizeof(cparser.http_parser))
+        if self._cparser is NULL:
+            raise MemoryError()
+
+        self._csettings = <cparser.http_parser_settings*> \
+                                PyMem_Malloc(sizeof(cparser.http_parser_settings))
+        if self._csettings is NULL:
+            raise MemoryError()
+
+    def __dealloc__(self):
+        PyMem_Free(self._cparser)
+        PyMem_Free(self._csettings)
+
+    cdef _init(self, cparser.http_parser_type mode,
+                   object protocol, object loop, int limit,
+                   object timer=None,
+                   size_t max_line_size=8190, size_t max_headers=32768,
+                   size_t max_field_size=8190, payload_exception=None,
+                   bint response_with_body=True, bint read_until_eof=False,
+                   bint auto_decompress=True):
+        cparser.http_parser_init(self._cparser, mode)
+        self._cparser.data = <void*>self
+        self._cparser.content_length = 0
+
+        cparser.http_parser_settings_init(self._csettings)
+
+        self._protocol = protocol
+        self._loop = loop
+        self._timer = timer
+
+        self._buf = bytearray()
+        self._payload = None
+        self._payload_error = 0
+        self._payload_exception = payload_exception
+        self._messages = []
+
+        self._raw_name = bytearray()
+        self._raw_value = bytearray()
+        self._has_value = False
+
+        self._max_line_size = max_line_size
+        self._max_headers = max_headers
+        self._max_field_size = max_field_size
+        self._response_with_body = response_with_body
+        self._read_until_eof = read_until_eof
+        self._upgraded = False
+        self._auto_decompress = auto_decompress
+        self._content_encoding = None
+
+        self._csettings.on_url = cb_on_url
+        self._csettings.on_status = cb_on_status
+        self._csettings.on_header_field = cb_on_header_field
+        self._csettings.on_header_value = cb_on_header_value
+        self._csettings.on_headers_complete = cb_on_headers_complete
+        self._csettings.on_body = cb_on_body
+        self._csettings.on_message_begin = cb_on_message_begin
+        self._csettings.on_message_complete = cb_on_message_complete
+        self._csettings.on_chunk_header = cb_on_chunk_header
+        self._csettings.on_chunk_complete = cb_on_chunk_complete
+
+        self._last_error = None
+        self._limit = limit
+
+    cdef _process_header(self):
+        if self._raw_name:
+            raw_name = bytes(self._raw_name)
+            raw_value = bytes(self._raw_value)
+
+            name = find_header(raw_name)
+            value = raw_value.decode('utf-8', 'surrogateescape')
+
+            self._headers.add(name, value)
+
+            if name is CONTENT_ENCODING:
+                self._content_encoding = value
+
+            PyByteArray_Resize(self._raw_name, 0)
+            PyByteArray_Resize(self._raw_value, 0)
+            self._has_value = False
+            self._raw_headers.append((raw_name, raw_value))
+
+    cdef _on_header_field(self, char* at, size_t length):
+        cdef Py_ssize_t size
+        cdef char *buf
+        if self._has_value:
+            self._process_header()
+
+        size = PyByteArray_Size(self._raw_name)
+        PyByteArray_Resize(self._raw_name, size + length)
+        buf = PyByteArray_AsString(self._raw_name)
+        memcpy(buf + size, at, length)
+
+    cdef _on_header_value(self, char* at, size_t length):
+        cdef Py_ssize_t size
+        cdef char *buf
+
+        size = PyByteArray_Size(self._raw_value)
+        PyByteArray_Resize(self._raw_value, size + length)
+        buf = PyByteArray_AsString(self._raw_value)
+        memcpy(buf + size, at, length)
+        self._has_value = True
+
+    cdef _on_headers_complete(self):
+        self._process_header()
+
+        method = http_method_str(self._cparser.method)
+        should_close = not cparser.http_should_keep_alive(self._cparser)
+        upgrade = self._cparser.upgrade
+        chunked = self._cparser.flags & cparser.F_CHUNKED
+
+        raw_headers = tuple(self._raw_headers)
+        headers = CIMultiDictProxy(self._headers)
+
+        if upgrade or self._cparser.method == 5: # cparser.CONNECT:
+            self._upgraded = True
+
+        # do not support old websocket spec
+        if SEC_WEBSOCKET_KEY1 in headers:
+            raise InvalidHeader(SEC_WEBSOCKET_KEY1)
+
+        encoding = None
+        enc = self._content_encoding
+        if enc is not None:
+            self._content_encoding = None
+            enc = enc.lower()
+            if enc in ('gzip', 'deflate', 'br'):
+                encoding = enc
+
+        if self._cparser.type == cparser.HTTP_REQUEST:
+            msg = _new_request_message(
+                method, self._path,
+                self.http_version(), headers, raw_headers,
+                should_close, encoding, upgrade, chunked, self._url)
+        else:
+            msg = _new_response_message(
+                self.http_version(), self._cparser.status_code, self._reason,
+                headers, raw_headers, should_close, encoding,
+                upgrade, chunked)
+
+        if (ULLONG_MAX > self._cparser.content_length > 0 or chunked or
+                self._cparser.method == 5 or  # CONNECT: 5
+                (self._cparser.status_code >= 199 and
+                 self._cparser.content_length == ULLONG_MAX and
+                 self._read_until_eof)
+        ):
+            payload = StreamReader(
+                self._protocol, timer=self._timer, loop=self._loop,
+                limit=self._limit)
+        else:
+            payload = EMPTY_PAYLOAD
+
+        self._payload = payload
+        if encoding is not None and self._auto_decompress:
+            self._payload = DeflateBuffer(payload, encoding)
+
+        if not self._response_with_body:
+            payload = EMPTY_PAYLOAD
+
+        self._messages.append((msg, payload))
+
+    cdef _on_message_complete(self):
+        self._payload.feed_eof()
+        self._payload = None
+
+    cdef _on_chunk_header(self):
+        self._payload.begin_http_chunk_receiving()
+
+    cdef _on_chunk_complete(self):
+        self._payload.end_http_chunk_receiving()
+
+    cdef object _on_status_complete(self):
+        pass
+
+    cdef inline http_version(self):
+        cdef cparser.http_parser* parser = self._cparser
+
+        if parser.http_major == 1:
+            if parser.http_minor == 0:
+                return HttpVersion10
+            elif parser.http_minor == 1:
+                return HttpVersion11
+
+        return HttpVersion(parser.http_major, parser.http_minor)
+
+    ### Public API ###
+
+    def feed_eof(self):
+        cdef bytes desc
+
+        if self._payload is not None:
+            if self._cparser.flags & cparser.F_CHUNKED:
+                raise TransferEncodingError(
+                    "Not enough data for satisfy transfer length header.")
+            elif self._cparser.flags & cparser.F_CONTENTLENGTH:
+                raise ContentLengthError(
+                    "Not enough data for satisfy content length header.")
+            elif self._cparser.http_errno != cparser.HPE_OK:
+                desc = cparser.http_errno_description(
+                    <cparser.http_errno> self._cparser.http_errno)
+                raise PayloadEncodingError(desc.decode('latin-1'))
+            else:
+                self._payload.feed_eof()
+        elif self._started:
+            self._on_headers_complete()
+            if self._messages:
+                return self._messages[-1][0]
+
+    def feed_data(self, data):
+        cdef:
+            size_t data_len
+            size_t nb
+
+        PyObject_GetBuffer(data, &self.py_buf, PyBUF_SIMPLE)
+        data_len = <size_t>self.py_buf.len
+
+        nb = cparser.http_parser_execute(
+            self._cparser,
+            self._csettings,
+            <char*>self.py_buf.buf,
+            data_len)
+
+        PyBuffer_Release(&self.py_buf)
+
+        if (self._cparser.http_errno != cparser.HPE_OK):
+            if self._payload_error == 0:
+                if self._last_error is not None:
+                    ex = self._last_error
+                    self._last_error = None
+                else:
+                    ex = parser_error_from_errno(
+                        <cparser.http_errno> self._cparser.http_errno)
+                self._payload = None
+                raise ex
+
+        if self._messages:
+            messages = self._messages
+            self._messages = []
+        else:
+            messages = ()
+
+        if self._upgraded:
+            return messages, True, data[nb:]
+        else:
+            return messages, False, b''
+
+    def set_upgraded(self, val):
+        self._upgraded = val
+
+
+cdef class HttpRequestParser(HttpParser):
+
+    def __init__(self, protocol, loop, int limit, timer=None,
+                 size_t max_line_size=8190, size_t max_headers=32768,
+                 size_t max_field_size=8190, payload_exception=None,
+                 bint response_with_body=True, bint read_until_eof=False,
+    ):
+         self._init(cparser.HTTP_REQUEST, protocol, loop, limit, timer,
+                    max_line_size, max_headers, max_field_size,
+                    payload_exception, response_with_body, read_until_eof)
+
+    cdef object _on_status_complete(self):
+         cdef Py_buffer py_buf
+         if not self._buf:
+             return
+         self._path = self._buf.decode('utf-8', 'surrogateescape')
+         if self._cparser.method == 5:  # CONNECT
+             self._url = URL(self._path)
+         else:
+             PyObject_GetBuffer(self._buf, &py_buf, PyBUF_SIMPLE)
+             try:
+                 self._url = _parse_url(<char*>py_buf.buf,
+                                        py_buf.len)
+             finally:
+                 PyBuffer_Release(&py_buf)
+         PyByteArray_Resize(self._buf, 0)
+
+
+cdef class HttpResponseParser(HttpParser):
+
+    def __init__(self, protocol, loop, int limit, timer=None,
+                 size_t max_line_size=8190, size_t max_headers=32768,
+                 size_t max_field_size=8190, payload_exception=None,
+                 bint response_with_body=True, bint read_until_eof=False,
+                 bint auto_decompress=True
+    ):
+        self._init(cparser.HTTP_RESPONSE, protocol, loop, limit, timer,
+                   max_line_size, max_headers, max_field_size,
+                   payload_exception, response_with_body, read_until_eof,
+                   auto_decompress)
+
+    cdef object _on_status_complete(self):
+        if self._buf:
+            self._reason = self._buf.decode('utf-8', 'surrogateescape')
+            PyByteArray_Resize(self._buf, 0)
+        else:
+            self._reason = self._reason or ''
+
+cdef int cb_on_message_begin(cparser.http_parser* parser) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+
+    pyparser._started = True
+    pyparser._headers = CIMultiDict()
+    pyparser._raw_headers = []
+    PyByteArray_Resize(pyparser._buf, 0)
+    pyparser._path = None
+    pyparser._reason = None
+    return 0
+
+
+cdef int cb_on_url(cparser.http_parser* parser,
+                   const char *at, size_t length) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    try:
+        if length > pyparser._max_line_size:
+            raise LineTooLong(
+                'Status line is too long', pyparser._max_line_size, length)
+        extend(pyparser._buf, at, length)
+    except BaseException as ex:
+        pyparser._last_error = ex
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_status(cparser.http_parser* parser,
+                      const char *at, size_t length) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    cdef str reason
+    try:
+        if length > pyparser._max_line_size:
+            raise LineTooLong(
+                'Status line is too long', pyparser._max_line_size, length)
+        extend(pyparser._buf, at, length)
+    except BaseException as ex:
+        pyparser._last_error = ex
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_header_field(cparser.http_parser* parser,
+                            const char *at, size_t length) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    cdef Py_ssize_t size
+    try:
+        pyparser._on_status_complete()
+        size = len(pyparser._raw_name) + length
+        if size > pyparser._max_field_size:
+            raise LineTooLong(
+                'Header name is too long', pyparser._max_field_size, size)
+        pyparser._on_header_field(at, length)
+    except BaseException as ex:
+        pyparser._last_error = ex
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_header_value(cparser.http_parser* parser,
+                            const char *at, size_t length) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    cdef Py_ssize_t size
+    try:
+        size = len(pyparser._raw_value) + length
+        if size > pyparser._max_field_size:
+            raise LineTooLong(
+                'Header value is too long', pyparser._max_field_size, size)
+        pyparser._on_header_value(at, length)
+    except BaseException as ex:
+        pyparser._last_error = ex
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_headers_complete(cparser.http_parser* parser) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    try:
+        pyparser._on_status_complete()
+        pyparser._on_headers_complete()
+    except BaseException as exc:
+        pyparser._last_error = exc
+        return -1
+    else:
+        if pyparser._cparser.upgrade or pyparser._cparser.method == 5: # CONNECT
+            return 2
+        else:
+            return 0
+
+
+cdef int cb_on_body(cparser.http_parser* parser,
+                    const char *at, size_t length) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    cdef bytes body = at[:length]
+    try:
+        pyparser._payload.feed_data(body, length)
+    except BaseException as exc:
+        if pyparser._payload_exception is not None:
+            pyparser._payload.set_exception(pyparser._payload_exception(str(exc)))
+        else:
+            pyparser._payload.set_exception(exc)
+        pyparser._payload_error = 1
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_message_complete(cparser.http_parser* parser) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    try:
+        pyparser._started = False
+        pyparser._on_message_complete()
+    except BaseException as exc:
+        pyparser._last_error = exc
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_chunk_header(cparser.http_parser* parser) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    try:
+        pyparser._on_chunk_header()
+    except BaseException as exc:
+        pyparser._last_error = exc
+        return -1
+    else:
+        return 0
+
+
+cdef int cb_on_chunk_complete(cparser.http_parser* parser) except -1:
+    cdef HttpParser pyparser = <HttpParser>parser.data
+    try:
+        pyparser._on_chunk_complete()
+    except BaseException as exc:
+        pyparser._last_error = exc
+        return -1
+    else:
+        return 0
+
+
+cdef parser_error_from_errno(cparser.http_errno errno):
+    cdef bytes desc = cparser.http_errno_description(errno)
+
+    if errno in (cparser.HPE_CB_message_begin,
+                 cparser.HPE_CB_url,
+                 cparser.HPE_CB_header_field,
+                 cparser.HPE_CB_header_value,
+                 cparser.HPE_CB_headers_complete,
+                 cparser.HPE_CB_body,
+                 cparser.HPE_CB_message_complete,
+                 cparser.HPE_CB_status,
+                 cparser.HPE_CB_chunk_header,
+                 cparser.HPE_CB_chunk_complete):
+        cls = BadHttpMessage
+
+    elif errno == cparser.HPE_INVALID_STATUS:
+        cls = BadStatusLine
+
+    elif errno == cparser.HPE_INVALID_METHOD:
+        cls = BadStatusLine
+
+    elif errno == cparser.HPE_INVALID_URL:
+        cls = InvalidURLError
+
+    else:
+        cls = BadHttpMessage
+
+    return cls(desc.decode('latin-1'))
+
+
+def parse_url(url):
+    cdef:
+        Py_buffer py_buf
+        char* buf_data
+
+    PyObject_GetBuffer(url, &py_buf, PyBUF_SIMPLE)
+    try:
+        buf_data = <char*>py_buf.buf
+        return _parse_url(buf_data, py_buf.len)
+    finally:
+        PyBuffer_Release(&py_buf)
+
+
+cdef _parse_url(char* buf_data, size_t length):
+    cdef:
+        cparser.http_parser_url* parsed
+        int res
+        str schema = None
+        str host = None
+        object port = None
+        str path = None
+        str query = None
+        str fragment = None
+        str user = None
+        str password = None
+        str userinfo = None
+        object result = None
+        int off
+        int ln
+
+    parsed = <cparser.http_parser_url*> \
+                        PyMem_Malloc(sizeof(cparser.http_parser_url))
+    if parsed is NULL:
+        raise MemoryError()
+    cparser.http_parser_url_init(parsed)
+    try:
+        res = cparser.http_parser_parse_url(buf_data, length, 0, parsed)
+
+        if res == 0:
+            if parsed.field_set & (1 << cparser.UF_SCHEMA):
+                off = parsed.field_data[<int>cparser.UF_SCHEMA].off
+                ln = parsed.field_data[<int>cparser.UF_SCHEMA].len
+                schema = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
+            else:
+                schema = ''
+
+            if parsed.field_set & (1 << cparser.UF_HOST):
+                off = parsed.field_data[<int>cparser.UF_HOST].off
+                ln = parsed.field_data[<int>cparser.UF_HOST].len
+                host = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
+            else:
+                host = ''
+
+            if parsed.field_set & (1 << cparser.UF_PORT):
+                port = parsed.port
+
+            if parsed.field_set & (1 << cparser.UF_PATH):
+                off = parsed.field_data[<int>cparser.UF_PATH].off
+                ln = parsed.field_data[<int>cparser.UF_PATH].len
+                path = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
+            else:
+                path = ''
+
+            if parsed.field_set & (1 << cparser.UF_QUERY):
+                off = parsed.field_data[<int>cparser.UF_QUERY].off
+                ln = parsed.field_data[<int>cparser.UF_QUERY].len
+                query = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
+            else:
+                query = ''
+
+            if parsed.field_set & (1 << cparser.UF_FRAGMENT):
+                off = parsed.field_data[<int>cparser.UF_FRAGMENT].off
+                ln = parsed.field_data[<int>cparser.UF_FRAGMENT].len
+                fragment = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
+            else:
+                fragment = ''
+
+            if parsed.field_set & (1 << cparser.UF_USERINFO):
+                off = parsed.field_data[<int>cparser.UF_USERINFO].off
+                ln = parsed.field_data[<int>cparser.UF_USERINFO].len
+                userinfo = buf_data[off:off+ln].decode('utf-8', 'surrogateescape')
+
+                user, sep, password = userinfo.partition(':')
+
+            return URL_build(scheme=schema,
+                             user=user, password=password, host=host, port=port,
+                             path=path, query_string=query, fragment=fragment, encoded=True)
+        else:
+            raise InvalidURLError("invalid url {!r}".format(buf_data))
+    finally:
+        PyMem_Free(parsed)

.venv/lib/python3.9/site-packages/aiohttp/_http_writer.pyx

@@ -0,0 +1,151 @@
+from cpython.bytes cimport PyBytes_FromStringAndSize
+from cpython.exc cimport PyErr_NoMemory
+from cpython.mem cimport PyMem_Free, PyMem_Malloc, PyMem_Realloc
+from cpython.object cimport PyObject_Str
+from libc.stdint cimport uint8_t, uint64_t
+from libc.string cimport memcpy
+
+from multidict import istr
+
+DEF BUF_SIZE = 16 * 1024  # 16KiB
+cdef char BUFFER[BUF_SIZE]
+
+cdef object _istr = istr
+
+
+# ----------------- writer ---------------------------
+
+cdef struct Writer:
+    char *buf
+    Py_ssize_t size
+    Py_ssize_t pos
+
+
+cdef inline void _init_writer(Writer* writer):
+    writer.buf = &BUFFER[0]
+    writer.size = BUF_SIZE
+    writer.pos = 0
+
+
+cdef inline void _release_writer(Writer* writer):
+    if writer.buf != BUFFER:
+        PyMem_Free(writer.buf)
+
+
+cdef inline int _write_byte(Writer* writer, uint8_t ch):
+    cdef char * buf
+    cdef Py_ssize_t size
+
+    if writer.pos == writer.size:
+        # reallocate
+        size = writer.size + BUF_SIZE
+        if writer.buf == BUFFER:
+            buf = <char*>PyMem_Malloc(size)
+            if buf == NULL:
+                PyErr_NoMemory()
+                return -1
+            memcpy(buf, writer.buf, writer.size)
+        else:
+            buf = <char*>PyMem_Realloc(writer.buf, size)
+            if buf == NULL:
+                PyErr_NoMemory()
+                return -1
+        writer.buf = buf
+        writer.size = size
+    writer.buf[writer.pos] = <char>ch
+    writer.pos += 1
+    return 0
+
+
+cdef inline int _write_utf8(Writer* writer, Py_UCS4 symbol):
+    cdef uint64_t utf = <uint64_t> symbol
+
+    if utf < 0x80:
+        return _write_byte(writer, <uint8_t>utf)
+    elif utf < 0x800:
+        if _write_byte(writer, <uint8_t>(0xc0 | (utf >> 6))) < 0:
+            return -1
+        return _write_byte(writer,  <uint8_t>(0x80 | (utf & 0x3f)))
+    elif 0xD800 <= utf <= 0xDFFF:
+        # surogate pair, ignored
+        return 0
+    elif utf < 0x10000:
+        if _write_byte(writer, <uint8_t>(0xe0 | (utf >> 12))) < 0:
+            return -1
+        if _write_byte(writer, <uint8_t>(0x80 | ((utf >> 6) & 0x3f))) < 0:
+            return -1
+        return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))
+    elif utf > 0x10FFFF:
+        # symbol is too large
+        return 0
+    else:
+        if _write_byte(writer,  <uint8_t>(0xf0 | (utf >> 18))) < 0:
+            return -1
+        if _write_byte(writer,
+                       <uint8_t>(0x80 | ((utf >> 12) & 0x3f))) < 0:
+           return -1
+        if _write_byte(writer,
+                       <uint8_t>(0x80 | ((utf >> 6) & 0x3f))) < 0:
+            return -1
+        return _write_byte(writer, <uint8_t>(0x80 | (utf & 0x3f)))
+
+
+cdef inline int _write_str(Writer* writer, str s):
+    cdef Py_UCS4 ch
+    for ch in s:
+        if _write_utf8(writer, ch) < 0:
+            return -1
+
+
+# --------------- _serialize_headers ----------------------
+
+cdef str to_str(object s):
+    typ = type(s)
+    if typ is str:
+        return <str>s
+    elif typ is _istr:
+        return PyObject_Str(s)
+    elif not isinstance(s, str):
+        raise TypeError("Cannot serialize non-str key {!r}".format(s))
+    else:
+        return str(s)
+
+
+def _serialize_headers(str status_line, headers):
+    cdef Writer writer
+    cdef object key
+    cdef object val
+    cdef bytes ret
+
+    _init_writer(&writer)
+
+    try:
+        if _write_str(&writer, status_line) < 0:
+            raise
+        if _write_byte(&writer, b'\r') < 0:
+            raise
+        if _write_byte(&writer, b'\n') < 0:
+            raise
+
+        for key, val in headers.items():
+            if _write_str(&writer, to_str(key)) < 0:
+                raise
+            if _write_byte(&writer, b':') < 0:
+                raise
+            if _write_byte(&writer, b' ') < 0:
+                raise
+            if _write_str(&writer, to_str(val)) < 0:
+                raise
+            if _write_byte(&writer, b'\r') < 0:
+                raise
+            if _write_byte(&writer, b'\n') < 0:
+                raise
+
+        if _write_byte(&writer, b'\r') < 0:
+            raise
+        if _write_byte(&writer, b'\n') < 0:
+            raise
+
+        return PyBytes_FromStringAndSize(writer.buf, writer.pos)
+    finally:
+        _release_writer(&writer)

.venv/lib/python3.9/site-packages/aiohttp/_websocket.pyx

@@ -0,0 +1,56 @@
+from cpython cimport PyBytes_AsString
+
+
+#from cpython cimport PyByteArray_AsString # cython still not exports that
+cdef extern from "Python.h":
+    char* PyByteArray_AsString(bytearray ba) except NULL
+
+from libc.stdint cimport uint32_t, uint64_t, uintmax_t
+
+
+def _websocket_mask_cython(object mask, object data):
+    """Note, this function mutates its `data` argument
+    """
+    cdef:
+        Py_ssize_t data_len, i
+        # bit operations on signed integers are implementation-specific
+        unsigned char * in_buf
+        const unsigned char * mask_buf
+        uint32_t uint32_msk
+        uint64_t uint64_msk
+
+    assert len(mask) == 4
+
+    if not isinstance(mask, bytes):
+        mask = bytes(mask)
+
+    if isinstance(data, bytearray):
+        data = <bytearray>data
+    else:
+        data = bytearray(data)
+
+    data_len = len(data)
+    in_buf = <unsigned char*>PyByteArray_AsString(data)
+    mask_buf = <const unsigned char*>PyBytes_AsString(mask)
+    uint32_msk = (<uint32_t*>mask_buf)[0]
+
+    # TODO: align in_data ptr to achieve even faster speeds
+    # does it need in python ?! malloc() always aligns to sizeof(long) bytes
+
+    if sizeof(size_t) >= 8:
+        uint64_msk = uint32_msk
+        uint64_msk = (uint64_msk << 32) | uint32_msk
+
+        while data_len >= 8:
+            (<uint64_t*>in_buf)[0] ^= uint64_msk
+            in_buf += 8
+            data_len -= 8
+
+
+    while data_len >= 4:
+        (<uint32_t*>in_buf)[0] ^= uint32_msk
+        in_buf += 4
+        data_len -= 4
+
+    for i in range(0, data_len):
+        in_buf[i] ^= mask_buf[i]

.venv/lib/python3.9/site-packages/aiohttp/abc.py

@@ -0,0 +1,200 @@
+import asyncio
+import logging
+from abc import ABC, abstractmethod
+from collections.abc import Sized
+from http.cookies import BaseCookie, Morsel
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Awaitable,
+    Callable,
+    Dict,
+    Generator,
+    Iterable,
+    List,
+    Optional,
+    Tuple,
+)
+
+from multidict import CIMultiDict
+from yarl import URL
+
+from .helpers import get_running_loop
+from .typedefs import LooseCookies
+
+if TYPE_CHECKING:  # pragma: no cover
+    from .web_app import Application
+    from .web_exceptions import HTTPException
+    from .web_request import BaseRequest, Request
+    from .web_response import StreamResponse
+else:
+    BaseRequest = Request = Application = StreamResponse = None
+    HTTPException = None
+
+
+class AbstractRouter(ABC):
+    def __init__(self) -> None:
+        self._frozen = False
+
+    def post_init(self, app: Application) -> None:
+        """Post init stage.
+
+        Not an abstract method for sake of backward compatibility,
+        but if the router wants to be aware of the application
+        it can override this.
+        """
+
+    @property
+    def frozen(self) -> bool:
+        return self._frozen
+
+    def freeze(self) -> None:
+        """Freeze router."""
+        self._frozen = True
+
+    @abstractmethod
+    async def resolve(self, request: Request) -> "AbstractMatchInfo":
+        """Return MATCH_INFO for given request"""
+
+
+class AbstractMatchInfo(ABC):
+    @property  # pragma: no branch
+    @abstractmethod
+    def handler(self) -> Callable[[Request], Awaitable[StreamResponse]]:
+        """Execute matched request handler"""
+
+    @property
+    @abstractmethod
+    def expect_handler(self) -> Callable[[Request], Awaitable[None]]:
+        """Expect handler for 100-continue processing"""
+
+    @property  # pragma: no branch
+    @abstractmethod
+    def http_exception(self) -> Optional[HTTPException]:
+        """HTTPException instance raised on router's resolving, or None"""
+
+    @abstractmethod  # pragma: no branch
+    def get_info(self) -> Dict[str, Any]:
+        """Return a dict with additional info useful for introspection"""
+
+    @property  # pragma: no branch
+    @abstractmethod
+    def apps(self) -> Tuple[Application, ...]:
+        """Stack of nested applications.
+
+        Top level application is left-most element.
+
+        """
+
+    @abstractmethod
+    def add_app(self, app: Application) -> None:
+        """Add application to the nested apps stack."""
+
+    @abstractmethod
+    def freeze(self) -> None:
+        """Freeze the match info.
+
+        The method is called after route resolution.
+
+        After the call .add_app() is forbidden.
+
+        """
+
+
+class AbstractView(ABC):
+    """Abstract class based view."""
+
+    def __init__(self, request: Request) -> None:
+        self._request = request
+
+    @property
+    def request(self) -> Request:
+        """Request instance."""
+        return self._request
+
+    @abstractmethod
+    def __await__(self) -> Generator[Any, None, StreamResponse]:
+        """Execute the view handler."""
+
+
+class AbstractResolver(ABC):
+    """Abstract DNS resolver."""
+
+    @abstractmethod
+    async def resolve(self, host: str, port: int, family: int) -> List[Dict[str, Any]]:
+        """Return IP address for given hostname"""
+
+    @abstractmethod
+    async def close(self) -> None:
+        """Release resolver"""
+
+
+if TYPE_CHECKING:  # pragma: no cover
+    IterableBase = Iterable[Morsel[str]]
+else:
+    IterableBase = Iterable
+
+
+class AbstractCookieJar(Sized, IterableBase):
+    """Abstract Cookie Jar."""
+
+    def __init__(self, *, loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
+        self._loop = get_running_loop(loop)
+
+    @abstractmethod
+    def clear(self) -> None:
+        """Clear all cookies."""
+
+    @abstractmethod
+    def update_cookies(self, cookies: LooseCookies, response_url: URL = URL()) -> None:
+        """Update cookies."""
+
+    @abstractmethod
+    def filter_cookies(self, request_url: URL) -> "BaseCookie[str]":
+        """Return the jar's cookies filtered by their attributes."""
+
+
+class AbstractStreamWriter(ABC):
+    """Abstract stream writer."""
+
+    buffer_size = 0
+    output_size = 0
+    length = 0  # type: Optional[int]
+
+    @abstractmethod
+    async def write(self, chunk: bytes) -> None:
+        """Write chunk into stream."""
+
+    @abstractmethod
+    async def write_eof(self, chunk: bytes = b"") -> None:
+        """Write last chunk."""
+
+    @abstractmethod
+    async def drain(self) -> None:
+        """Flush the write buffer."""
+
+    @abstractmethod
+    def enable_compression(self, encoding: str = "deflate") -> None:
+        """Enable HTTP body compression"""
+
+    @abstractmethod
+    def enable_chunking(self) -> None:
+        """Enable HTTP chunked mode"""
+
+    @abstractmethod
+    async def write_headers(
+        self, status_line: str, headers: "CIMultiDict[str]"
+    ) -> None:
+        """Write HTTP headers"""
+
+
+class AbstractAccessLogger(ABC):
+    """Abstract writer to access log."""
+
+    def __init__(self, logger: logging.Logger, log_format: str) -> None:
+        self.logger = logger
+        self.log_format = log_format
+
+    @abstractmethod
+    def log(self, request: BaseRequest, response: StreamResponse, time: float) -> None:
+        """Emit log to logger."""

.venv/lib/python3.9/site-packages/aiohttp/base_protocol.py

@@ -0,0 +1,87 @@
+import asyncio
+from typing import Optional, cast
+
+from .tcp_helpers import tcp_nodelay
+
+
+class BaseProtocol(asyncio.Protocol):
+    __slots__ = (
+        "_loop",
+        "_paused",
+        "_drain_waiter",
+        "_connection_lost",
+        "_reading_paused",
+        "transport",
+    )
+
+    def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
+        self._loop = loop  # type: asyncio.AbstractEventLoop
+        self._paused = False
+        self._drain_waiter = None  # type: Optional[asyncio.Future[None]]
+        self._connection_lost = False
+        self._reading_paused = False
+
+        self.transport = None  # type: Optional[asyncio.Transport]
+
+    def pause_writing(self) -> None:
+        assert not self._paused
+        self._paused = True
+
+    def resume_writing(self) -> None:
+        assert self._paused
+        self._paused = False
+
+        waiter = self._drain_waiter
+        if waiter is not None:
+            self._drain_waiter = None
+            if not waiter.done():
+                waiter.set_result(None)
+
+    def pause_reading(self) -> None:
+        if not self._reading_paused and self.transport is not None:
+            try:
+                self.transport.pause_reading()
+            except (AttributeError, NotImplementedError, RuntimeError):
+                pass
+            self._reading_paused = True
+
+    def resume_reading(self) -> None:
+        if self._reading_paused and self.transport is not None:
+            try:
+                self.transport.resume_reading()
+            except (AttributeError, NotImplementedError, RuntimeError):
+                pass
+            self._reading_paused = False
+
+    def connection_made(self, transport: asyncio.BaseTransport) -> None:
+        tr = cast(asyncio.Transport, transport)
+        tcp_nodelay(tr, True)
+        self.transport = tr
+
+    def connection_lost(self, exc: Optional[BaseException]) -> None:
+        self._connection_lost = True
+        # Wake up the writer if currently paused.
+        self.transport = None
+        if not self._paused:
+            return
+        waiter = self._drain_waiter
+        if waiter is None:
+            return
+        self._drain_waiter = None
+        if waiter.done():
+            return
+        if exc is None:
+            waiter.set_result(None)
+        else:
+            waiter.set_exception(exc)
+
+    async def _drain_helper(self) -> None:
+        if self._connection_lost:
+            raise ConnectionResetError("Connection lost")
+        if not self._paused:
+            return
+        waiter = self._drain_waiter
+        assert waiter is None or waiter.cancelled()
+        waiter = self._loop.create_future()
+        self._drain_waiter = waiter
+        await waiter

.venv/lib/python3.9/site-packages/aiohttp/client_exceptions.py

@@ -0,0 +1,317 @@
+"""HTTP related errors."""
+
+import asyncio
+import warnings
+from typing import TYPE_CHECKING, Any, Optional, Tuple, Union
+
+from .typedefs import LooseHeaders
+
+try:
+    import ssl
+
+    SSLContext = ssl.SSLContext
+except ImportError:  # pragma: no cover
+    ssl = SSLContext = None  # type: ignore
+
+
+if TYPE_CHECKING:  # pragma: no cover
+    from .client_reqrep import ClientResponse, ConnectionKey, Fingerprint, RequestInfo
+else:
+    RequestInfo = ClientResponse = ConnectionKey = None
+
+__all__ = (
+    "ClientError",
+    "ClientConnectionError",
+    "ClientOSError",
+    "ClientConnectorError",
+    "ClientProxyConnectionError",
+    "ClientSSLError",
+    "ClientConnectorSSLError",
+    "ClientConnectorCertificateError",
+    "ServerConnectionError",
+    "ServerTimeoutError",
+    "ServerDisconnectedError",
+    "ServerFingerprintMismatch",
+    "ClientResponseError",
+    "ClientHttpProxyError",
+    "WSServerHandshakeError",
+    "ContentTypeError",
+    "ClientPayloadError",
+    "InvalidURL",
+)
+
+
+class ClientError(Exception):
+    """Base class for client connection errors."""
+
+
+class ClientResponseError(ClientError):
+    """Connection error during reading response.
+
+    request_info: instance of RequestInfo
+    """
+
+    def __init__(
+        self,
+        request_info: RequestInfo,
+        history: Tuple[ClientResponse, ...],
+        *,
+        code: Optional[int] = None,
+        status: Optional[int] = None,
+        message: str = "",
+        headers: Optional[LooseHeaders] = None,
+    ) -> None:
+        self.request_info = request_info
+        if code is not None:
+            if status is not None:
+                raise ValueError(
+                    "Both code and status arguments are provided; "
+                    "code is deprecated, use status instead"
+                )
+            warnings.warn(
+                "code argument is deprecated, use status instead",
+                DeprecationWarning,
+                stacklevel=2,
+            )
+        if status is not None:
+            self.status = status
+        elif code is not None:
+            self.status = code
+        else:
+            self.status = 0
+        self.message = message
+        self.headers = headers
+        self.history = history
+        self.args = (request_info, history)
+
+    def __str__(self) -> str:
+        return "{}, message={!r}, url={!r}".format(
+            self.status,
+            self.message,
+            self.request_info.real_url,
+        )
+
+    def __repr__(self) -> str:
+        args = f"{self.request_info!r}, {self.history!r}"
+        if self.status != 0:
+            args += f", status={self.status!r}"
+        if self.message != "":
+            args += f", message={self.message!r}"
+        if self.headers is not None:
+            args += f", headers={self.headers!r}"
+        return "{}({})".format(type(self).__name__, args)
+
+    @property
+    def code(self) -> int:
+        warnings.warn(
+            "code property is deprecated, use status instead",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        return self.status
+
+    @code.setter
+    def code(self, value: int) -> None:
+        warnings.warn(
+            "code property is deprecated, use status instead",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        self.status = value
+
+
+class ContentTypeError(ClientResponseError):
+    """ContentType found is not valid."""
+
+
+class WSServerHandshakeError(ClientResponseError):
+    """websocket server handshake error."""
+
+
+class ClientHttpProxyError(ClientResponseError):
+    """HTTP proxy error.
+
+    Raised in :class:`aiohttp.connector.TCPConnector` if
+    proxy responds with status other than ``200 OK``
+    on ``CONNECT`` request.
+    """
+
+
+class TooManyRedirects(ClientResponseError):
+    """Client was redirected too many times."""
+
+
+class ClientConnectionError(ClientError):
+    """Base class for client socket errors."""
+
+
+class ClientOSError(ClientConnectionError, OSError):
+    """OSError error."""
+
+
+class ClientConnectorError(ClientOSError):
+    """Client connector error.
+
+    Raised in :class:`aiohttp.connector.TCPConnector` if
+        connection to proxy can not be established.
+    """
+
+    def __init__(self, connection_key: ConnectionKey, os_error: OSError) -> None:
+        self._conn_key = connection_key
+        self._os_error = os_error
+        super().__init__(os_error.errno, os_error.strerror)
+        self.args = (connection_key, os_error)
+
+    @property
+    def os_error(self) -> OSError:
+        return self._os_error
+
+    @property
+    def host(self) -> str:
+        return self._conn_key.host
+
+    @property
+    def port(self) -> Optional[int]:
+        return self._conn_key.port
+
+    @property
+    def ssl(self) -> Union[SSLContext, None, bool, "Fingerprint"]:
+        return self._conn_key.ssl
+
+    def __str__(self) -> str:
+        return "Cannot connect to host {0.host}:{0.port} ssl:{1} [{2}]".format(
+            self, self.ssl if self.ssl is not None else "default", self.strerror
+        )
+
+    # OSError.__reduce__ does too much black magick
+    __reduce__ = BaseException.__reduce__
+
+
+class ClientProxyConnectionError(ClientConnectorError):
+    """Proxy connection error.
+
+    Raised in :class:`aiohttp.connector.TCPConnector` if
+        connection to proxy can not be established.
+    """
+
+
+class ServerConnectionError(ClientConnectionError):
+    """Server connection errors."""
+
+
+class ServerDisconnectedError(ServerConnectionError):
+    """Server disconnected."""
+
+    def __init__(self, message: Optional[str] = None) -> None:
+        if message is None:
+            message = "Server disconnected"
+
+        self.args = (message,)
+        self.message = message
+
+
+class ServerTimeoutError(ServerConnectionError, asyncio.TimeoutError):
+    """Server timeout error."""
+
+
+class ServerFingerprintMismatch(ServerConnectionError):
+    """SSL certificate does not match expected fingerprint."""
+
+    def __init__(self, expected: bytes, got: bytes, host: str, port: int) -> None:
+        self.expected = expected
+        self.got = got
+        self.host = host
+        self.port = port
+        self.args = (expected, got, host, port)
+
+    def __repr__(self) -> str:
+        return "<{} expected={!r} got={!r} host={!r} port={!r}>".format(
+            self.__class__.__name__, self.expected, self.got, self.host, self.port
+        )
+
+
+class ClientPayloadError(ClientError):
+    """Response payload error."""
+
+
+class InvalidURL(ClientError, ValueError):
+    """Invalid URL.
+
+    URL used for fetching is malformed, e.g. it doesn't contains host
+    part."""
+
+    # Derive from ValueError for backward compatibility
+
+    def __init__(self, url: Any) -> None:
+        # The type of url is not yarl.URL because the exception can be raised
+        # on URL(url) call
+        super().__init__(url)
+
+    @property
+    def url(self) -> Any:
+        return self.args[0]
+
+    def __repr__(self) -> str:
+        return f"<{self.__class__.__name__} {self.url}>"
+
+
+class ClientSSLError(ClientConnectorError):
+    """Base error for ssl.*Errors."""
+
+
+if ssl is not None:
+    cert_errors = (ssl.CertificateError,)
+    cert_errors_bases = (
+        ClientSSLError,
+        ssl.CertificateError,
+    )
+
+    ssl_errors = (ssl.SSLError,)
+    ssl_error_bases = (ClientSSLError, ssl.SSLError)
+else:  # pragma: no cover
+    cert_errors = tuple()
+    cert_errors_bases = (
+        ClientSSLError,
+        ValueError,
+    )
+
+    ssl_errors = tuple()
+    ssl_error_bases = (ClientSSLError,)
+
+
+class ClientConnectorSSLError(*ssl_error_bases):  # type: ignore
+    """Response ssl error."""
+
+
+class ClientConnectorCertificateError(*cert_errors_bases):  # type: ignore
+    """Response certificate error."""
+
+    def __init__(
+        self, connection_key: ConnectionKey, certificate_error: Exception
+    ) -> None:
+        self._conn_key = connection_key
+        self._certificate_error = certificate_error
+        self.args = (connection_key, certificate_error)
+
+    @property
+    def certificate_error(self) -> Exception:
+        return self._certificate_error
+
+    @property
+    def host(self) -> str:
+        return self._conn_key.host
+
+    @property
+    def port(self) -> Optional[int]:
+        return self._conn_key.port
+
+    @property
+    def ssl(self) -> bool:
+        return self._conn_key.is_ssl
+
+    def __str__(self) -> str:
+        return (
+            "Cannot connect to host {0.host}:{0.port} ssl:{0.ssl} "
+            "[{0.certificate_error.__class__.__name__}: "
+            "{0.certificate_error.args}]".format(self)
+        )

.venv/lib/python3.9/site-packages/aiohttp/client_proto.py

@@ -0,0 +1,251 @@
+import asyncio
+from contextlib import suppress
+from typing import Any, Optional, Tuple
+
+from .base_protocol import BaseProtocol
+from .client_exceptions import (
+    ClientOSError,
+    ClientPayloadError,
+    ServerDisconnectedError,
+    ServerTimeoutError,
+)
+from .helpers import BaseTimerContext
+from .http import HttpResponseParser, RawResponseMessage
+from .streams import EMPTY_PAYLOAD, DataQueue, StreamReader
+
+
+class ResponseHandler(BaseProtocol, DataQueue[Tuple[RawResponseMessage, StreamReader]]):
+    """Helper class to adapt between Protocol and StreamReader."""
+
+    def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
+        BaseProtocol.__init__(self, loop=loop)
+        DataQueue.__init__(self, loop)
+
+        self._should_close = False
+
+        self._payload = None
+        self._skip_payload = False
+        self._payload_parser = None
+
+        self._timer = None
+
+        self._tail = b""
+        self._upgraded = False
+        self._parser = None  # type: Optional[HttpResponseParser]
+
+        self._read_timeout = None  # type: Optional[float]
+        self._read_timeout_handle = None  # type: Optional[asyncio.TimerHandle]
+
+    @property
+    def upgraded(self) -> bool:
+        return self._upgraded
+
+    @property
+    def should_close(self) -> bool:
+        if self._payload is not None and not self._payload.is_eof() or self._upgraded:
+            return True
+
+        return (
+            self._should_close
+            or self._upgraded
+            or self.exception() is not None
+            or self._payload_parser is not None
+            or len(self) > 0
+            or bool(self._tail)
+        )
+
+    def force_close(self) -> None:
+        self._should_close = True
+
+    def close(self) -> None:
+        transport = self.transport
+        if transport is not None:
+            transport.close()
+            self.transport = None
+            self._payload = None
+            self._drop_timeout()
+
+    def is_connected(self) -> bool:
+        return self.transport is not None and not self.transport.is_closing()
+
+    def connection_lost(self, exc: Optional[BaseException]) -> None:
+        self._drop_timeout()
+
+        if self._payload_parser is not None:
+            with suppress(Exception):
+                self._payload_parser.feed_eof()
+
+        uncompleted = None
+        if self._parser is not None:
+            try:
+                uncompleted = self._parser.feed_eof()
+            except Exception:
+                if self._payload is not None:
+                    self._payload.set_exception(
+                        ClientPayloadError("Response payload is not completed")
+                    )
+
+        if not self.is_eof():
+            if isinstance(exc, OSError):
+                exc = ClientOSError(*exc.args)
+            if exc is None:
+                exc = ServerDisconnectedError(uncompleted)
+            # assigns self._should_close to True as side effect,
+            # we do it anyway below
+            self.set_exception(exc)
+
+        self._should_close = True
+        self._parser = None
+        self._payload = None
+        self._payload_parser = None
+        self._reading_paused = False
+
+        super().connection_lost(exc)
+
+    def eof_received(self) -> None:
+        # should call parser.feed_eof() most likely
+        self._drop_timeout()
+
+    def pause_reading(self) -> None:
+        super().pause_reading()
+        self._drop_timeout()
+
+    def resume_reading(self) -> None:
+        super().resume_reading()
+        self._reschedule_timeout()
+
+    def set_exception(self, exc: BaseException) -> None:
+        self._should_close = True
+        self._drop_timeout()
+        super().set_exception(exc)
+
+    def set_parser(self, parser: Any, payload: Any) -> None:
+        # TODO: actual types are:
+        #   parser: WebSocketReader
+        #   payload: FlowControlDataQueue
+        # but they are not generi enough
+        # Need an ABC for both types
+        self._payload = payload
+        self._payload_parser = parser
+
+        self._drop_timeout()
+
+        if self._tail:
+            data, self._tail = self._tail, b""
+            self.data_received(data)
+
+    def set_response_params(
+        self,
+        *,
+        timer: Optional[BaseTimerContext] = None,
+        skip_payload: bool = False,
+        read_until_eof: bool = False,
+        auto_decompress: bool = True,
+        read_timeout: Optional[float] = None,
+        read_bufsize: int = 2 ** 16
+    ) -> None:
+        self._skip_payload = skip_payload
+
+        self._read_timeout = read_timeout
+        self._reschedule_timeout()
+
+        self._parser = HttpResponseParser(
+            self,
+            self._loop,
+            read_bufsize,
+            timer=timer,
+            payload_exception=ClientPayloadError,
+            response_with_body=not skip_payload,
+            read_until_eof=read_until_eof,
+            auto_decompress=auto_decompress,
+        )
+
+        if self._tail:
+            data, self._tail = self._tail, b""
+            self.data_received(data)
+
+    def _drop_timeout(self) -> None:
+        if self._read_timeout_handle is not None:
+            self._read_timeout_handle.cancel()
+            self._read_timeout_handle = None
+
+    def _reschedule_timeout(self) -> None:
+        timeout = self._read_timeout
+        if self._read_timeout_handle is not None:
+            self._read_timeout_handle.cancel()
+
+        if timeout:
+            self._read_timeout_handle = self._loop.call_later(
+                timeout, self._on_read_timeout
+            )
+        else:
+            self._read_timeout_handle = None
+
+    def _on_read_timeout(self) -> None:
+        exc = ServerTimeoutError("Timeout on reading data from socket")
+        self.set_exception(exc)
+        if self._payload is not None:
+            self._payload.set_exception(exc)
+
+    def data_received(self, data: bytes) -> None:
+        self._reschedule_timeout()
+
+        if not data:
+            return
+
+        # custom payload parser
+        if self._payload_parser is not None:
+            eof, tail = self._payload_parser.feed_data(data)
+            if eof:
+                self._payload = None
+                self._payload_parser = None
+
+                if tail:
+                    self.data_received(tail)
+            return
+        else:
+            if self._upgraded or self._parser is None:
+                # i.e. websocket connection, websocket parser is not set yet
+                self._tail += data
+            else:
+                # parse http messages
+                try:
+                    messages, upgraded, tail = self._parser.feed_data(data)
+                except BaseException as exc:
+                    if self.transport is not None:
+                        # connection.release() could be called BEFORE
+                        # data_received(), the transport is already
+                        # closed in this case
+                        self.transport.close()
+                    # should_close is True after the call
+                    self.set_exception(exc)
+                    return
+
+                self._upgraded = upgraded
+
+                payload = None
+                for message, payload in messages:
+                    if message.should_close:
+                        self._should_close = True
+
+                    self._payload = payload
+
+                    if self._skip_payload or message.code in (204, 304):
+                        self.feed_data((message, EMPTY_PAYLOAD), 0)  # type: ignore
+                    else:
+                        self.feed_data((message, payload), 0)
+                if payload is not None:
+                    # new message(s) was processed
+                    # register timeout handler unsubscribing
+                    # either on end-of-stream or immediately for
+                    # EMPTY_PAYLOAD
+                    if payload is not EMPTY_PAYLOAD:
+                        payload.on_eof(self._drop_timeout)
+                    else:
+                        self._drop_timeout()
+
+                if tail:
+                    if upgraded:
+                        self.data_received(tail)
+                    else:
+                        self._tail = tail

.venv/lib/python3.9/site-packages/aiohttp/client_ws.py

@@ -0,0 +1,301 @@
+"""WebSocket client for asyncio."""
+
+import asyncio
+from typing import Any, Optional
+
+import async_timeout
+
+from .client_exceptions import ClientError
+from .client_reqrep import ClientResponse
+from .helpers import call_later, set_result
+from .http import (
+    WS_CLOSED_MESSAGE,
+    WS_CLOSING_MESSAGE,
+    WebSocketError,
+    WSMessage,
+    WSMsgType,
+)
+from .http_websocket import WebSocketWriter  # WSMessage
+from .streams import EofStream, FlowControlDataQueue
+from .typedefs import (
+    DEFAULT_JSON_DECODER,
+    DEFAULT_JSON_ENCODER,
+    JSONDecoder,
+    JSONEncoder,
+)
+
+
+class ClientWebSocketResponse:
+    def __init__(
+        self,
+        reader: "FlowControlDataQueue[WSMessage]",
+        writer: WebSocketWriter,
+        protocol: Optional[str],
+        response: ClientResponse,
+        timeout: float,
+        autoclose: bool,
+        autoping: bool,
+        loop: asyncio.AbstractEventLoop,
+        *,
+        receive_timeout: Optional[float] = None,
+        heartbeat: Optional[float] = None,
+        compress: int = 0,
+        client_notakeover: bool = False,
+    ) -> None:
+        self._response = response
+        self._conn = response.connection
+
+        self._writer = writer
+        self._reader = reader
+        self._protocol = protocol
+        self._closed = False
+        self._closing = False
+        self._close_code = None  # type: Optional[int]
+        self._timeout = timeout
+        self._receive_timeout = receive_timeout
+        self._autoclose = autoclose
+        self._autoping = autoping
+        self._heartbeat = heartbeat
+        self._heartbeat_cb = None
+        if heartbeat is not None:
+            self._pong_heartbeat = heartbeat / 2.0
+        self._pong_response_cb = None
+        self._loop = loop
+        self._waiting = None  # type: Optional[asyncio.Future[bool]]
+        self._exception = None  # type: Optional[BaseException]
+        self._compress = compress
+        self._client_notakeover = client_notakeover
+
+        self._reset_heartbeat()
+
+    def _cancel_heartbeat(self) -> None:
+        if self._pong_response_cb is not None:
+            self._pong_response_cb.cancel()
+            self._pong_response_cb = None
+
+        if self._heartbeat_cb is not None:
+            self._heartbeat_cb.cancel()
+            self._heartbeat_cb = None
+
+    def _reset_heartbeat(self) -> None:
+        self._cancel_heartbeat()
+
+        if self._heartbeat is not None:
+            self._heartbeat_cb = call_later(
+                self._send_heartbeat, self._heartbeat, self._loop
+            )
+
+    def _send_heartbeat(self) -> None:
+        if self._heartbeat is not None and not self._closed:
+            # fire-and-forget a task is not perfect but maybe ok for
+            # sending ping. Otherwise we need a long-living heartbeat
+            # task in the class.
+            self._loop.create_task(self._writer.ping())
+
+            if self._pong_response_cb is not None:
+                self._pong_response_cb.cancel()
+            self._pong_response_cb = call_later(
+                self._pong_not_received, self._pong_heartbeat, self._loop
+            )
+
+    def _pong_not_received(self) -> None:
+        if not self._closed:
+            self._closed = True
+            self._close_code = 1006
+            self._exception = asyncio.TimeoutError()
+            self._response.close()
+
+    @property
+    def closed(self) -> bool:
+        return self._closed
+
+    @property
+    def close_code(self) -> Optional[int]:
+        return self._close_code
+
+    @property
+    def protocol(self) -> Optional[str]:
+        return self._protocol
+
+    @property
+    def compress(self) -> int:
+        return self._compress
+
+    @property
+    def client_notakeover(self) -> bool:
+        return self._client_notakeover
+
+    def get_extra_info(self, name: str, default: Any = None) -> Any:
+        """extra info from connection transport"""
+        conn = self._response.connection
+        if conn is None:
+            return default
+        transport = conn.transport
+        if transport is None:
+            return default
+        return transport.get_extra_info(name, default)
+
+    def exception(self) -> Optional[BaseException]:
+        return self._exception
+
+    async def ping(self, message: bytes = b"") -> None:
+        await self._writer.ping(message)
+
+    async def pong(self, message: bytes = b"") -> None:
+        await self._writer.pong(message)
+
+    async def send_str(self, data: str, compress: Optional[int] = None) -> None:
+        if not isinstance(data, str):
+            raise TypeError("data argument must be str (%r)" % type(data))
+        await self._writer.send(data, binary=False, compress=compress)
+
+    async def send_bytes(self, data: bytes, compress: Optional[int] = None) -> None:
+        if not isinstance(data, (bytes, bytearray, memoryview)):
+            raise TypeError("data argument must be byte-ish (%r)" % type(data))
+        await self._writer.send(data, binary=True, compress=compress)
+
+    async def send_json(
+        self,
+        data: Any,
+        compress: Optional[int] = None,
+        *,
+        dumps: JSONEncoder = DEFAULT_JSON_ENCODER,
+    ) -> None:
+        await self.send_str(dumps(data), compress=compress)
+
+    async def close(self, *, code: int = 1000, message: bytes = b"") -> bool:
+        # we need to break `receive()` cycle first,
+        # `close()` may be called from different task
+        if self._waiting is not None and not self._closed:
+            self._reader.feed_data(WS_CLOSING_MESSAGE, 0)
+            await self._waiting
+
+        if not self._closed:
+            self._cancel_heartbeat()
+            self._closed = True
+            try:
+                await self._writer.close(code, message)
+            except asyncio.CancelledError:
+                self._close_code = 1006
+                self._response.close()
+                raise
+            except Exception as exc:
+                self._close_code = 1006
+                self._exception = exc
+                self._response.close()
+                return True
+
+            if self._closing:
+                self._response.close()
+                return True
+
+            while True:
+                try:
+                    with async_timeout.timeout(self._timeout, loop=self._loop):
+                        msg = await self._reader.read()
+                except asyncio.CancelledError:
+                    self._close_code = 1006
+                    self._response.close()
+                    raise
+                except Exception as exc:
+                    self._close_code = 1006
+                    self._exception = exc
+                    self._response.close()
+                    return True
+
+                if msg.type == WSMsgType.CLOSE:
+                    self._close_code = msg.data
+                    self._response.close()
+                    return True
+        else:
+            return False
+
+    async def receive(self, timeout: Optional[float] = None) -> WSMessage:
+        while True:
+            if self._waiting is not None:
+                raise RuntimeError("Concurrent call to receive() is not allowed")
+
+            if self._closed:
+                return WS_CLOSED_MESSAGE
+            elif self._closing:
+                await self.close()
+                return WS_CLOSED_MESSAGE
+
+            try:
+                self._waiting = self._loop.create_future()
+                try:
+                    with async_timeout.timeout(
+                        timeout or self._receive_timeout, loop=self._loop
+                    ):
+                        msg = await self._reader.read()
+                    self._reset_heartbeat()
+                finally:
+                    waiter = self._waiting
+                    self._waiting = None
+                    set_result(waiter, True)
+            except (asyncio.CancelledError, asyncio.TimeoutError):
+                self._close_code = 1006
+                raise
+            except EofStream:
+                self._close_code = 1000
+                await self.close()
+                return WSMessage(WSMsgType.CLOSED, None, None)
+            except ClientError:
+                self._closed = True
+                self._close_code = 1006
+                return WS_CLOSED_MESSAGE
+            except WebSocketError as exc:
+                self._close_code = exc.code
+                await self.close(code=exc.code)
+                return WSMessage(WSMsgType.ERROR, exc, None)
+            except Exception as exc:
+                self._exception = exc
+                self._closing = True
+                self._close_code = 1006
+                await self.close()
+                return WSMessage(WSMsgType.ERROR, exc, None)
+
+            if msg.type == WSMsgType.CLOSE:
+                self._closing = True
+                self._close_code = msg.data
+                if not self._closed and self._autoclose:
+                    await self.close()
+            elif msg.type == WSMsgType.CLOSING:
+                self._closing = True
+            elif msg.type == WSMsgType.PING and self._autoping:
+                await self.pong(msg.data)
+                continue
+            elif msg.type == WSMsgType.PONG and self._autoping:
+                continue
+
+            return msg
+
+    async def receive_str(self, *, timeout: Optional[float] = None) -> str:
+        msg = await self.receive(timeout)
+        if msg.type != WSMsgType.TEXT:
+            raise TypeError(f"Received message {msg.type}:{msg.data!r} is not str")
+        return msg.data
+
+    async def receive_bytes(self, *, timeout: Optional[float] = None) -> bytes:
+        msg = await self.receive(timeout)
+        if msg.type != WSMsgType.BINARY:
+            raise TypeError(f"Received message {msg.type}:{msg.data!r} is not bytes")
+        return msg.data
+
+    async def receive_json(
+        self,
+        *,
+        loads: JSONDecoder = DEFAULT_JSON_DECODER,
+        timeout: Optional[float] = None,
+    ) -> Any:
+        data = await self.receive_str(timeout=timeout)
+        return loads(data)
+
+    def __aiter__(self) -> "ClientWebSocketResponse":
+        return self
+
+    async def __anext__(self) -> WSMessage:
+        msg = await self.receive()
+        if msg.type in (WSMsgType.CLOSE, WSMsgType.CLOSING, WSMsgType.CLOSED):
+            raise StopAsyncIteration
+        return msg

.venv/lib/python3.9/site-packages/aiohttp/cookiejar.py

@@ -0,0 +1,382 @@
+import asyncio
+import datetime
+import os  # noqa
+import pathlib
+import pickle
+import re
+from collections import defaultdict
+from http.cookies import BaseCookie, Morsel, SimpleCookie
+from typing import (  # noqa
+    DefaultDict,
+    Dict,
+    Iterable,
+    Iterator,
+    Mapping,
+    Optional,
+    Set,
+    Tuple,
+    Union,
+    cast,
+)
+
+from yarl import URL
+
+from .abc import AbstractCookieJar
+from .helpers import is_ip_address, next_whole_second
+from .typedefs import LooseCookies, PathLike
+
+__all__ = ("CookieJar", "DummyCookieJar")
+
+
+CookieItem = Union[str, "Morsel[str]"]
+
+
+class CookieJar(AbstractCookieJar):
+    """Implements cookie storage adhering to RFC 6265."""
+
+    DATE_TOKENS_RE = re.compile(
+        r"[\x09\x20-\x2F\x3B-\x40\x5B-\x60\x7B-\x7E]*"
+        r"(?P<token>[\x00-\x08\x0A-\x1F\d:a-zA-Z\x7F-\xFF]+)"
+    )
+
+    DATE_HMS_TIME_RE = re.compile(r"(\d{1,2}):(\d{1,2}):(\d{1,2})")
+
+    DATE_DAY_OF_MONTH_RE = re.compile(r"(\d{1,2})")
+
+    DATE_MONTH_RE = re.compile(
+        "(jan)|(feb)|(mar)|(apr)|(may)|(jun)|(jul)|" "(aug)|(sep)|(oct)|(nov)|(dec)",
+        re.I,
+    )
+
+    DATE_YEAR_RE = re.compile(r"(\d{2,4})")
+
+    MAX_TIME = datetime.datetime.max.replace(tzinfo=datetime.timezone.utc)
+
+    MAX_32BIT_TIME = datetime.datetime.utcfromtimestamp(2 ** 31 - 1)
+
+    def __init__(
+        self,
+        *,
+        unsafe: bool = False,
+        quote_cookie: bool = True,
+        loop: Optional[asyncio.AbstractEventLoop] = None
+    ) -> None:
+        super().__init__(loop=loop)
+        self._cookies = defaultdict(
+            SimpleCookie
+        )  # type: DefaultDict[str, SimpleCookie[str]]
+        self._host_only_cookies = set()  # type: Set[Tuple[str, str]]
+        self._unsafe = unsafe
+        self._quote_cookie = quote_cookie
+        self._next_expiration = next_whole_second()
+        self._expirations = {}  # type: Dict[Tuple[str, str], datetime.datetime]
+        # #4515: datetime.max may not be representable on 32-bit platforms
+        self._max_time = self.MAX_TIME
+        try:
+            self._max_time.timestamp()
+        except OverflowError:
+            self._max_time = self.MAX_32BIT_TIME
+
+    def save(self, file_path: PathLike) -> None:
+        file_path = pathlib.Path(file_path)
+        with file_path.open(mode="wb") as f:
+            pickle.dump(self._cookies, f, pickle.HIGHEST_PROTOCOL)
+
+    def load(self, file_path: PathLike) -> None:
+        file_path = pathlib.Path(file_path)
+        with file_path.open(mode="rb") as f:
+            self._cookies = pickle.load(f)
+
+    def clear(self) -> None:
+        self._cookies.clear()
+        self._host_only_cookies.clear()
+        self._next_expiration = next_whole_second()
+        self._expirations.clear()
+
+    def __iter__(self) -> "Iterator[Morsel[str]]":
+        self._do_expiration()
+        for val in self._cookies.values():
+            yield from val.values()
+
+    def __len__(self) -> int:
+        return sum(1 for i in self)
+
+    def _do_expiration(self) -> None:
+        now = datetime.datetime.now(datetime.timezone.utc)
+        if self._next_expiration > now:
+            return
+        if not self._expirations:
+            return
+        next_expiration = self._max_time
+        to_del = []
+        cookies = self._cookies
+        expirations = self._expirations
+        for (domain, name), when in expirations.items():
+            if when <= now:
+                cookies[domain].pop(name, None)
+                to_del.append((domain, name))
+                self._host_only_cookies.discard((domain, name))
+            else:
+                next_expiration = min(next_expiration, when)
+        for key in to_del:
+            del expirations[key]
+
+        try:
+            self._next_expiration = next_expiration.replace(
+                microsecond=0
+            ) + datetime.timedelta(seconds=1)
+        except OverflowError:
+            self._next_expiration = self._max_time
+
+    def _expire_cookie(self, when: datetime.datetime, domain: str, name: str) -> None:
+        self._next_expiration = min(self._next_expiration, when)
+        self._expirations[(domain, name)] = when
+
+    def update_cookies(self, cookies: LooseCookies, response_url: URL = URL()) -> None:
+        """Update cookies."""
+        hostname = response_url.raw_host
+
+        if not self._unsafe and is_ip_address(hostname):
+            # Don't accept cookies from IPs
+            return
+
+        if isinstance(cookies, Mapping):
+            cookies = cookies.items()
+
+        for name, cookie in cookies:
+            if not isinstance(cookie, Morsel):
+                tmp = SimpleCookie()  # type: SimpleCookie[str]
+                tmp[name] = cookie  # type: ignore
+                cookie = tmp[name]
+
+            domain = cookie["domain"]
+
+            # ignore domains with trailing dots
+            if domain.endswith("."):
+                domain = ""
+                del cookie["domain"]
+
+            if not domain and hostname is not None:
+                # Set the cookie's domain to the response hostname
+                # and set its host-only-flag
+                self._host_only_cookies.add((hostname, name))
+                domain = cookie["domain"] = hostname
+
+            if domain.startswith("."):
+                # Remove leading dot
+                domain = domain[1:]
+                cookie["domain"] = domain
+
+            if hostname and not self._is_domain_match(domain, hostname):
+                # Setting cookies for different domains is not allowed
+                continue
+
+            path = cookie["path"]
+            if not path or not path.startswith("/"):
+                # Set the cookie's path to the response path
+                path = response_url.path
+                if not path.startswith("/"):
+                    path = "/"
+                else:
+                    # Cut everything from the last slash to the end
+                    path = "/" + path[1 : path.rfind("/")]
+                cookie["path"] = path
+
+            max_age = cookie["max-age"]
+            if max_age:
+                try:
+                    delta_seconds = int(max_age)
+                    try:
+                        max_age_expiration = datetime.datetime.now(
+                            datetime.timezone.utc
+                        ) + datetime.timedelta(seconds=delta_seconds)
+                    except OverflowError:
+                        max_age_expiration = self._max_time
+                    self._expire_cookie(max_age_expiration, domain, name)
+                except ValueError:
+                    cookie["max-age"] = ""
+
+            else:
+                expires = cookie["expires"]
+                if expires:
+                    expire_time = self._parse_date(expires)
+                    if expire_time:
+                        self._expire_cookie(expire_time, domain, name)
+                    else:
+                        cookie["expires"] = ""
+
+            self._cookies[domain][name] = cookie
+
+        self._do_expiration()
+
+    def filter_cookies(
+        self, request_url: URL = URL()
+    ) -> Union["BaseCookie[str]", "SimpleCookie[str]"]:
+        """Returns this jar's cookies filtered by their attributes."""
+        self._do_expiration()
+        request_url = URL(request_url)
+        filtered: Union["SimpleCookie[str]", "BaseCookie[str]"] = (
+            SimpleCookie() if self._quote_cookie else BaseCookie()
+        )
+        hostname = request_url.raw_host or ""
+        is_not_secure = request_url.scheme not in ("https", "wss")
+
+        for cookie in self:
+            name = cookie.key
+            domain = cookie["domain"]
+
+            # Send shared cookies
+            if not domain:
+                filtered[name] = cookie.value
+                continue
+
+            if not self._unsafe and is_ip_address(hostname):
+                continue
+
+            if (domain, name) in self._host_only_cookies:
+                if domain != hostname:
+                    continue
+            elif not self._is_domain_match(domain, hostname):
+                continue
+
+            if not self._is_path_match(request_url.path, cookie["path"]):
+                continue
+
+            if is_not_secure and cookie["secure"]:
+                continue
+
+            # It's critical we use the Morsel so the coded_value
+            # (based on cookie version) is preserved
+            mrsl_val = cast("Morsel[str]", cookie.get(cookie.key, Morsel()))
+            mrsl_val.set(cookie.key, cookie.value, cookie.coded_value)
+            filtered[name] = mrsl_val
+
+        return filtered
+
+    @staticmethod
+    def _is_domain_match(domain: str, hostname: str) -> bool:
+        """Implements domain matching adhering to RFC 6265."""
+        if hostname == domain:
+            return True
+
+        if not hostname.endswith(domain):
+            return False
+
+        non_matching = hostname[: -len(domain)]
+
+        if not non_matching.endswith("."):
+            return False
+
+        return not is_ip_address(hostname)
+
+    @staticmethod
+    def _is_path_match(req_path: str, cookie_path: str) -> bool:
+        """Implements path matching adhering to RFC 6265."""
+        if not req_path.startswith("/"):
+            req_path = "/"
+
+        if req_path == cookie_path:
+            return True
+
+        if not req_path.startswith(cookie_path):
+            return False
+
+        if cookie_path.endswith("/"):
+            return True
+
+        non_matching = req_path[len(cookie_path) :]
+
+        return non_matching.startswith("/")
+
+    @classmethod
+    def _parse_date(cls, date_str: str) -> Optional[datetime.datetime]:
+        """Implements date string parsing adhering to RFC 6265."""
+        if not date_str:
+            return None
+
+        found_time = False
+        found_day = False
+        found_month = False
+        found_year = False
+
+        hour = minute = second = 0
+        day = 0
+        month = 0
+        year = 0
+
+        for token_match in cls.DATE_TOKENS_RE.finditer(date_str):
+
+            token = token_match.group("token")
+
+            if not found_time:
+                time_match = cls.DATE_HMS_TIME_RE.match(token)
+                if time_match:
+                    found_time = True
+                    hour, minute, second = [int(s) for s in time_match.groups()]
+                    continue
+
+            if not found_day:
+                day_match = cls.DATE_DAY_OF_MONTH_RE.match(token)
+                if day_match:
+                    found_day = True
+                    day = int(day_match.group())
+                    continue
+
+            if not found_month:
+                month_match = cls.DATE_MONTH_RE.match(token)
+                if month_match:
+                    found_month = True
+                    assert month_match.lastindex is not None
+                    month = month_match.lastindex
+                    continue
+
+            if not found_year:
+                year_match = cls.DATE_YEAR_RE.match(token)
+                if year_match:
+                    found_year = True
+                    year = int(year_match.group())
+
+        if 70 <= year <= 99:
+            year += 1900
+        elif 0 <= year <= 69:
+            year += 2000
+
+        if False in (found_day, found_month, found_year, found_time):
+            return None
+
+        if not 1 <= day <= 31:
+            return None
+
+        if year < 1601 or hour > 23 or minute > 59 or second > 59:
+            return None
+
+        return datetime.datetime(
+            year, month, day, hour, minute, second, tzinfo=datetime.timezone.utc
+        )
+
+
+class DummyCookieJar(AbstractCookieJar):
+    """Implements a dummy cookie storage.
+
+    It can be used with the ClientSession when no cookie processing is needed.
+
+    """
+
+    def __init__(self, *, loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
+        super().__init__(loop=loop)
+
+    def __iter__(self) -> "Iterator[Morsel[str]]":
+        while False:
+            yield None
+
+    def __len__(self) -> int:
+        return 0
+
+    def clear(self) -> None:
+        pass
+
+    def update_cookies(self, cookies: LooseCookies, response_url: URL = URL()) -> None:
+        pass
+
+    def filter_cookies(self, request_url: URL) -> "BaseCookie[str]":
+        return SimpleCookie()

.venv/lib/python3.9/site-packages/aiohttp/formdata.py

@@ -0,0 +1,170 @@
+import io
+from typing import Any, Iterable, List, Optional
+from urllib.parse import urlencode
+
+from multidict import MultiDict, MultiDictProxy
+
+from . import hdrs, multipart, payload
+from .helpers import guess_filename
+from .payload import Payload
+
+__all__ = ("FormData",)
+
+
+class FormData:
+    """Helper class for multipart/form-data and
+    application/x-www-form-urlencoded body generation."""
+
+    def __init__(
+        self,
+        fields: Iterable[Any] = (),
+        quote_fields: bool = True,
+        charset: Optional[str] = None,
+    ) -> None:
+        self._writer = multipart.MultipartWriter("form-data")
+        self._fields = []  # type: List[Any]
+        self._is_multipart = False
+        self._is_processed = False
+        self._quote_fields = quote_fields
+        self._charset = charset
+
+        if isinstance(fields, dict):
+            fields = list(fields.items())
+        elif not isinstance(fields, (list, tuple)):
+            fields = (fields,)
+        self.add_fields(*fields)
+
+    @property
+    def is_multipart(self) -> bool:
+        return self._is_multipart
+
+    def add_field(
+        self,
+        name: str,
+        value: Any,
+        *,
+        content_type: Optional[str] = None,
+        filename: Optional[str] = None,
+        content_transfer_encoding: Optional[str] = None
+    ) -> None:
+
+        if isinstance(value, io.IOBase):
+            self._is_multipart = True
+        elif isinstance(value, (bytes, bytearray, memoryview)):
+            if filename is None and content_transfer_encoding is None:
+                filename = name
+
+        type_options = MultiDict({"name": name})  # type: MultiDict[str]
+        if filename is not None and not isinstance(filename, str):
+            raise TypeError(
+                "filename must be an instance of str. " "Got: %s" % filename
+            )
+        if filename is None and isinstance(value, io.IOBase):
+            filename = guess_filename(value, name)
+        if filename is not None:
+            type_options["filename"] = filename
+            self._is_multipart = True
+
+        headers = {}
+        if content_type is not None:
+            if not isinstance(content_type, str):
+                raise TypeError(
+                    "content_type must be an instance of str. " "Got: %s" % content_type
+                )
+            headers[hdrs.CONTENT_TYPE] = content_type
+            self._is_multipart = True
+        if content_transfer_encoding is not None:
+            if not isinstance(content_transfer_encoding, str):
+                raise TypeError(
+                    "content_transfer_encoding must be an instance"
+                    " of str. Got: %s" % content_transfer_encoding
+                )
+            headers[hdrs.CONTENT_TRANSFER_ENCODING] = content_transfer_encoding
+            self._is_multipart = True
+
+        self._fields.append((type_options, headers, value))
+
+    def add_fields(self, *fields: Any) -> None:
+        to_add = list(fields)
+
+        while to_add:
+            rec = to_add.pop(0)
+
+            if isinstance(rec, io.IOBase):
+                k = guess_filename(rec, "unknown")
+                self.add_field(k, rec)  # type: ignore
+
+            elif isinstance(rec, (MultiDictProxy, MultiDict)):
+                to_add.extend(rec.items())
+
+            elif isinstance(rec, (list, tuple)) and len(rec) == 2:
+                k, fp = rec
+                self.add_field(k, fp)  # type: ignore
+
+            else:
+                raise TypeError(
+                    "Only io.IOBase, multidict and (name, file) "
+                    "pairs allowed, use .add_field() for passing "
+                    "more complex parameters, got {!r}".format(rec)
+                )
+
+    def _gen_form_urlencoded(self) -> payload.BytesPayload:
+        # form data (x-www-form-urlencoded)
+        data = []
+        for type_options, _, value in self._fields:
+            data.append((type_options["name"], value))
+
+        charset = self._charset if self._charset is not None else "utf-8"
+
+        if charset == "utf-8":
+            content_type = "application/x-www-form-urlencoded"
+        else:
+            content_type = "application/x-www-form-urlencoded; " "charset=%s" % charset
+
+        return payload.BytesPayload(
+            urlencode(data, doseq=True, encoding=charset).encode(),
+            content_type=content_type,
+        )
+
+    def _gen_form_data(self) -> multipart.MultipartWriter:
+        """Encode a list of fields using the multipart/form-data MIME format"""
+        if self._is_processed:
+            raise RuntimeError("Form data has been processed already")
+        for dispparams, headers, value in self._fields:
+            try:
+                if hdrs.CONTENT_TYPE in headers:
+                    part = payload.get_payload(
+                        value,
+                        content_type=headers[hdrs.CONTENT_TYPE],
+                        headers=headers,
+                        encoding=self._charset,
+                    )
+                else:
+                    part = payload.get_payload(
+                        value, headers=headers, encoding=self._charset
+                    )
+            except Exception as exc:
+                raise TypeError(
+                    "Can not serialize value type: %r\n "
+                    "headers: %r\n value: %r" % (type(value), headers, value)
+                ) from exc
+
+            if dispparams:
+                part.set_content_disposition(
+                    "form-data", quote_fields=self._quote_fields, **dispparams
+                )
+                # FIXME cgi.FieldStorage doesn't likes body parts with
+                # Content-Length which were sent via chunked transfer encoding
+                assert part.headers is not None
+                part.headers.popall(hdrs.CONTENT_LENGTH, None)
+
+            self._writer.append_payload(part)
+
+        self._is_processed = True
+        return self._writer
+
+    def __call__(self) -> Payload:
+        if self._is_multipart:
+            return self._gen_form_data()
+        else:
+            return self._gen_form_urlencoded()

.venv/lib/python3.9/site-packages/aiohttp/frozenlist.py

@@ -0,0 +1,72 @@
+from collections.abc import MutableSequence
+from functools import total_ordering
+
+from .helpers import NO_EXTENSIONS
+
+
+@total_ordering
+class FrozenList(MutableSequence):
+
+    __slots__ = ("_frozen", "_items")
+
+    def __init__(self, items=None):
+        self._frozen = False
+        if items is not None:
+            items = list(items)
+        else:
+            items = []
+        self._items = items
+
+    @property
+    def frozen(self):
+        return self._frozen
+
+    def freeze(self):
+        self._frozen = True
+
+    def __getitem__(self, index):
+        return self._items[index]
+
+    def __setitem__(self, index, value):
+        if self._frozen:
+            raise RuntimeError("Cannot modify frozen list.")
+        self._items[index] = value
+
+    def __delitem__(self, index):
+        if self._frozen:
+            raise RuntimeError("Cannot modify frozen list.")
+        del self._items[index]
+
+    def __len__(self):
+        return self._items.__len__()
+
+    def __iter__(self):
+        return self._items.__iter__()
+
+    def __reversed__(self):
+        return self._items.__reversed__()
+
+    def __eq__(self, other):
+        return list(self) == other
+
+    def __le__(self, other):
+        return list(self) <= other
+
+    def insert(self, pos, item):
+        if self._frozen:
+            raise RuntimeError("Cannot modify frozen list.")
+        self._items.insert(pos, item)
+
+    def __repr__(self):
+        return f"<FrozenList(frozen={self._frozen}, {self._items!r})>"
+
+
+PyFrozenList = FrozenList
+
+try:
+    from aiohttp._frozenlist import FrozenList as CFrozenList  # type: ignore
+
+    if not NO_EXTENSIONS:
+        FrozenList = CFrozenList  # type: ignore
+except ImportError:  # pragma: no cover
+    pass

.venv/lib/python3.9/site-packages/aiohttp/frozenlist.pyi

@@ -0,0 +1,46 @@
+from typing import (
+    Generic,
+    Iterable,
+    Iterator,
+    List,
+    MutableSequence,
+    Optional,
+    TypeVar,
+    Union,
+    overload,
+)
+
+_T = TypeVar("_T")
+_Arg = Union[List[_T], Iterable[_T]]
+
+class FrozenList(MutableSequence[_T], Generic[_T]):
+    def __init__(self, items: Optional[_Arg[_T]] = ...) -> None: ...
+    @property
+    def frozen(self) -> bool: ...
+    def freeze(self) -> None: ...
+    @overload
+    def __getitem__(self, i: int) -> _T: ...
+    @overload
+    def __getitem__(self, s: slice) -> FrozenList[_T]: ...
+    @overload
+    def __setitem__(self, i: int, o: _T) -> None: ...
+    @overload
+    def __setitem__(self, s: slice, o: Iterable[_T]) -> None: ...
+    @overload
+    def __delitem__(self, i: int) -> None: ...
+    @overload
+    def __delitem__(self, i: slice) -> None: ...
+    def __len__(self) -> int: ...
+    def __iter__(self) -> Iterator[_T]: ...
+    def __reversed__(self) -> Iterator[_T]: ...
+    def __eq__(self, other: object) -> bool: ...
+    def __le__(self, other: FrozenList[_T]) -> bool: ...
+    def __ne__(self, other: object) -> bool: ...
+    def __lt__(self, other: FrozenList[_T]) -> bool: ...
+    def __ge__(self, other: FrozenList[_T]) -> bool: ...
+    def __gt__(self, other: FrozenList[_T]) -> bool: ...
+    def insert(self, pos: int, item: _T) -> None: ...
+    def __repr__(self) -> str: ...
+
+# types for C accelerators are the same
+CFrozenList = PyFrozenList = FrozenList

.venv/lib/python3.9/site-packages/aiohttp/hdrs.py

@@ -0,0 +1,108 @@
+"""HTTP Headers constants."""
+
+# After changing the file content call ./tools/gen.py
+# to regenerate the headers parser
+
+from multidict import istr
+
+METH_ANY = "*"
+METH_CONNECT = "CONNECT"
+METH_HEAD = "HEAD"
+METH_GET = "GET"
+METH_DELETE = "DELETE"
+METH_OPTIONS = "OPTIONS"
+METH_PATCH = "PATCH"
+METH_POST = "POST"
+METH_PUT = "PUT"
+METH_TRACE = "TRACE"
+
+METH_ALL = {
+    METH_CONNECT,
+    METH_HEAD,
+    METH_GET,
+    METH_DELETE,
+    METH_OPTIONS,
+    METH_PATCH,
+    METH_POST,
+    METH_PUT,
+    METH_TRACE,
+}
+
+
+ACCEPT = istr("Accept")
+ACCEPT_CHARSET = istr("Accept-Charset")
+ACCEPT_ENCODING = istr("Accept-Encoding")
+ACCEPT_LANGUAGE = istr("Accept-Language")
+ACCEPT_RANGES = istr("Accept-Ranges")
+ACCESS_CONTROL_MAX_AGE = istr("Access-Control-Max-Age")
+ACCESS_CONTROL_ALLOW_CREDENTIALS = istr("Access-Control-Allow-Credentials")
+ACCESS_CONTROL_ALLOW_HEADERS = istr("Access-Control-Allow-Headers")
+ACCESS_CONTROL_ALLOW_METHODS = istr("Access-Control-Allow-Methods")
+ACCESS_CONTROL_ALLOW_ORIGIN = istr("Access-Control-Allow-Origin")
+ACCESS_CONTROL_EXPOSE_HEADERS = istr("Access-Control-Expose-Headers")
+ACCESS_CONTROL_REQUEST_HEADERS = istr("Access-Control-Request-Headers")
+ACCESS_CONTROL_REQUEST_METHOD = istr("Access-Control-Request-Method")
+AGE = istr("Age")
+ALLOW = istr("Allow")
+AUTHORIZATION = istr("Authorization")
+CACHE_CONTROL = istr("Cache-Control")
+CONNECTION = istr("Connection")
+CONTENT_DISPOSITION = istr("Content-Disposition")
+CONTENT_ENCODING = istr("Content-Encoding")
+CONTENT_LANGUAGE = istr("Content-Language")
+CONTENT_LENGTH = istr("Content-Length")
+CONTENT_LOCATION = istr("Content-Location")
+CONTENT_MD5 = istr("Content-MD5")
+CONTENT_RANGE = istr("Content-Range")
+CONTENT_TRANSFER_ENCODING = istr("Content-Transfer-Encoding")
+CONTENT_TYPE = istr("Content-Type")
+COOKIE = istr("Cookie")
+DATE = istr("Date")
+DESTINATION = istr("Destination")
+DIGEST = istr("Digest")
+ETAG = istr("Etag")
+EXPECT = istr("Expect")
+EXPIRES = istr("Expires")
+FORWARDED = istr("Forwarded")
+FROM = istr("From")
+HOST = istr("Host")
+IF_MATCH = istr("If-Match")
+IF_MODIFIED_SINCE = istr("If-Modified-Since")
+IF_NONE_MATCH = istr("If-None-Match")
+IF_RANGE = istr("If-Range")
+IF_UNMODIFIED_SINCE = istr("If-Unmodified-Since")
+KEEP_ALIVE = istr("Keep-Alive")
+LAST_EVENT_ID = istr("Last-Event-ID")
+LAST_MODIFIED = istr("Last-Modified")
+LINK = istr("Link")
+LOCATION = istr("Location")
+MAX_FORWARDS = istr("Max-Forwards")
+ORIGIN = istr("Origin")
+PRAGMA = istr("Pragma")
+PROXY_AUTHENTICATE = istr("Proxy-Authenticate")
+PROXY_AUTHORIZATION = istr("Proxy-Authorization")
+RANGE = istr("Range")
+REFERER = istr("Referer")
+RETRY_AFTER = istr("Retry-After")
+SEC_WEBSOCKET_ACCEPT = istr("Sec-WebSocket-Accept")
+SEC_WEBSOCKET_VERSION = istr("Sec-WebSocket-Version")
+SEC_WEBSOCKET_PROTOCOL = istr("Sec-WebSocket-Protocol")
+SEC_WEBSOCKET_EXTENSIONS = istr("Sec-WebSocket-Extensions")
+SEC_WEBSOCKET_KEY = istr("Sec-WebSocket-Key")
+SEC_WEBSOCKET_KEY1 = istr("Sec-WebSocket-Key1")
+SERVER = istr("Server")
+SET_COOKIE = istr("Set-Cookie")
+TE = istr("TE")
+TRAILER = istr("Trailer")
+TRANSFER_ENCODING = istr("Transfer-Encoding")
+UPGRADE = istr("Upgrade")
+URI = istr("URI")
+USER_AGENT = istr("User-Agent")
+VARY = istr("Vary")
+VIA = istr("Via")
+WANT_DIGEST = istr("Want-Digest")
+WARNING = istr("Warning")
+WWW_AUTHENTICATE = istr("WWW-Authenticate")
+X_FORWARDED_FOR = istr("X-Forwarded-For")
+X_FORWARDED_HOST = istr("X-Forwarded-Host")
+X_FORWARDED_PROTO = istr("X-Forwarded-Proto")

.venv/lib/python3.9/site-packages/aiohttp/helpers.py

@@ -0,0 +1,780 @@
+"""Various helper functions"""
+
+import asyncio
+import base64
+import binascii
+import cgi
+import datetime
+import functools
+import inspect
+import netrc
+import os
+import platform
+import re
+import sys
+import time
+import warnings
+import weakref
+from collections import namedtuple
+from contextlib import suppress
+from math import ceil
+from pathlib import Path
+from types import TracebackType
+from typing import (
+    Any,
+    Callable,
+    Dict,
+    Generator,
+    Generic,
+    Iterable,
+    Iterator,
+    List,
+    Mapping,
+    Optional,
+    Pattern,
+    Set,
+    Tuple,
+    Type,
+    TypeVar,
+    Union,
+    cast,
+)
+from urllib.parse import quote
+from urllib.request import getproxies
+
+import async_timeout
+import attr
+from multidict import MultiDict, MultiDictProxy
+from typing_extensions import Protocol
+from yarl import URL
+
+from . import hdrs
+from .log import client_logger, internal_logger
+from .typedefs import PathLike  # noqa
+
+__all__ = ("BasicAuth", "ChainMapProxy")
+
+PY_36 = sys.version_info >= (3, 6)
+PY_37 = sys.version_info >= (3, 7)
+PY_38 = sys.version_info >= (3, 8)
+
+if not PY_37:
+    import idna_ssl
+
+    idna_ssl.patch_match_hostname()
+
+try:
+    from typing import ContextManager
+except ImportError:
+    from typing_extensions import ContextManager
+
+
+def all_tasks(
+    loop: Optional[asyncio.AbstractEventLoop] = None,
+) -> Set["asyncio.Task[Any]"]:
+    tasks = list(asyncio.Task.all_tasks(loop))
+    return {t for t in tasks if not t.done()}
+
+
+if PY_37:
+    all_tasks = getattr(asyncio, "all_tasks")
+
+
+_T = TypeVar("_T")
+_S = TypeVar("_S")
+
+
+sentinel = object()  # type: Any
+NO_EXTENSIONS = bool(os.environ.get("AIOHTTP_NO_EXTENSIONS"))  # type: bool
+
+# N.B. sys.flags.dev_mode is available on Python 3.7+, use getattr
+# for compatibility with older versions
+DEBUG = getattr(sys.flags, "dev_mode", False) or (
+    not sys.flags.ignore_environment and bool(os.environ.get("PYTHONASYNCIODEBUG"))
+)  # type: bool
+
+
+CHAR = {chr(i) for i in range(0, 128)}
+CTL = {chr(i) for i in range(0, 32)} | {
+    chr(127),
+}
+SEPARATORS = {
+    "(",
+    ")",
+    "<",
+    ">",
+    "@",
+    ",",
+    ";",
+    ":",
+    "\\",
+    '"',
+    "/",
+    "[",
+    "]",
+    "?",
+    "=",
+    "{",
+    "}",
+    " ",
+    chr(9),
+}
+TOKEN = CHAR ^ CTL ^ SEPARATORS
+
+
+class noop:
+    def __await__(self) -> Generator[None, None, None]:
+        yield
+
+
+class BasicAuth(namedtuple("BasicAuth", ["login", "password", "encoding"])):
+    """Http basic authentication helper."""
+
+    def __new__(
+        cls, login: str, password: str = "", encoding: str = "latin1"
+    ) -> "BasicAuth":
+        if login is None:
+            raise ValueError("None is not allowed as login value")
+
+        if password is None:
+            raise ValueError("None is not allowed as password value")
+
+        if ":" in login:
+            raise ValueError('A ":" is not allowed in login (RFC 1945#section-11.1)')
+
+        return super().__new__(cls, login, password, encoding)
+
+    @classmethod
+    def decode(cls, auth_header: str, encoding: str = "latin1") -> "BasicAuth":
+        """Create a BasicAuth object from an Authorization HTTP header."""
+        try:
+            auth_type, encoded_credentials = auth_header.split(" ", 1)
+        except ValueError:
+            raise ValueError("Could not parse authorization header.")
+
+        if auth_type.lower() != "basic":
+            raise ValueError("Unknown authorization method %s" % auth_type)
+
+        try:
+            decoded = base64.b64decode(
+                encoded_credentials.encode("ascii"), validate=True
+            ).decode(encoding)
+        except binascii.Error:
+            raise ValueError("Invalid base64 encoding.")
+
+        try:
+            # RFC 2617 HTTP Authentication
+            # https://www.ietf.org/rfc/rfc2617.txt
+            # the colon must be present, but the username and password may be
+            # otherwise blank.
+            username, password = decoded.split(":", 1)
+        except ValueError:
+            raise ValueError("Invalid credentials.")
+
+        return cls(username, password, encoding=encoding)
+
+    @classmethod
+    def from_url(cls, url: URL, *, encoding: str = "latin1") -> Optional["BasicAuth"]:
+        """Create BasicAuth from url."""
+        if not isinstance(url, URL):
+            raise TypeError("url should be yarl.URL instance")
+        if url.user is None:
+            return None
+        return cls(url.user, url.password or "", encoding=encoding)
+
+    def encode(self) -> str:
+        """Encode credentials."""
+        creds = (f"{self.login}:{self.password}").encode(self.encoding)
+        return "Basic %s" % base64.b64encode(creds).decode(self.encoding)
+
+
+def strip_auth_from_url(url: URL) -> Tuple[URL, Optional[BasicAuth]]:
+    auth = BasicAuth.from_url(url)
+    if auth is None:
+        return url, None
+    else:
+        return url.with_user(None), auth
+
+
+def netrc_from_env() -> Optional[netrc.netrc]:
+    """Attempt to load the netrc file from the path specified by the env-var
+    NETRC or in the default location in the user's home directory.
+
+    Returns None if it couldn't be found or fails to parse.
+    """
+    netrc_env = os.environ.get("NETRC")
+
+    if netrc_env is not None:
+        netrc_path = Path(netrc_env)
+    else:
+        try:
+            home_dir = Path.home()
+        except RuntimeError as e:  # pragma: no cover
+            # if pathlib can't resolve home, it may raise a RuntimeError
+            client_logger.debug(
+                "Could not resolve home directory when "
+                "trying to look for .netrc file: %s",
+                e,
+            )
+            return None
+
+        netrc_path = home_dir / (
+            "_netrc" if platform.system() == "Windows" else ".netrc"
+        )
+
+    try:
+        return netrc.netrc(str(netrc_path))
+    except netrc.NetrcParseError as e:
+        client_logger.warning("Could not parse .netrc file: %s", e)
+    except OSError as e:
+        # we couldn't read the file (doesn't exist, permissions, etc.)
+        if netrc_env or netrc_path.is_file():
+            # only warn if the environment wanted us to load it,
+            # or it appears like the default file does actually exist
+            client_logger.warning("Could not read .netrc file: %s", e)
+
+    return None
+
+
+@attr.s(auto_attribs=True, frozen=True, slots=True)
+class ProxyInfo:
+    proxy: URL
+    proxy_auth: Optional[BasicAuth]
+
+
+def proxies_from_env() -> Dict[str, ProxyInfo]:
+    proxy_urls = {k: URL(v) for k, v in getproxies().items() if k in ("http", "https")}
+    netrc_obj = netrc_from_env()
+    stripped = {k: strip_auth_from_url(v) for k, v in proxy_urls.items()}
+    ret = {}
+    for proto, val in stripped.items():
+        proxy, auth = val
+        if proxy.scheme == "https":
+            client_logger.warning("HTTPS proxies %s are not supported, ignoring", proxy)
+            continue
+        if netrc_obj and auth is None:
+            auth_from_netrc = None
+            if proxy.host is not None:
+                auth_from_netrc = netrc_obj.authenticators(proxy.host)
+            if auth_from_netrc is not None:
+                # auth_from_netrc is a (`user`, `account`, `password`) tuple,
+                # `user` and `account` both can be username,
+                # if `user` is None, use `account`
+                *logins, password = auth_from_netrc
+                login = logins[0] if logins[0] else logins[-1]
+                auth = BasicAuth(cast(str, login), cast(str, password))
+        ret[proto] = ProxyInfo(proxy, auth)
+    return ret
+
+
+def current_task(
+    loop: Optional[asyncio.AbstractEventLoop] = None,
+) -> "Optional[asyncio.Task[Any]]":
+    if PY_37:
+        return asyncio.current_task(loop=loop)
+    else:
+        return asyncio.Task.current_task(loop=loop)
+
+
+def get_running_loop(
+    loop: Optional[asyncio.AbstractEventLoop] = None,
+) -> asyncio.AbstractEventLoop:
+    if loop is None:
+        loop = asyncio.get_event_loop()
+    if not loop.is_running():
+        warnings.warn(
+            "The object should be created within an async function",
+            DeprecationWarning,
+            stacklevel=3,
+        )
+        if loop.get_debug():
+            internal_logger.warning(
+                "The object should be created within an async function", stack_info=True
+            )
+    return loop
+
+
+def isasyncgenfunction(obj: Any) -> bool:
+    func = getattr(inspect, "isasyncgenfunction", None)
+    if func is not None:
+        return func(obj)
+    else:
+        return False
+
+
+@attr.s(auto_attribs=True, frozen=True, slots=True)
+class MimeType:
+    type: str
+    subtype: str
+    suffix: str
+    parameters: "MultiDictProxy[str]"
+
+
+@functools.lru_cache(maxsize=56)
+def parse_mimetype(mimetype: str) -> MimeType:
+    """Parses a MIME type into its components.
+
+    mimetype is a MIME type string.
+
+    Returns a MimeType object.
+
+    Example:
+
+    >>> parse_mimetype('text/html; charset=utf-8')
+    MimeType(type='text', subtype='html', suffix='',
+             parameters={'charset': 'utf-8'})
+
+    """
+    if not mimetype:
+        return MimeType(
+            type="", subtype="", suffix="", parameters=MultiDictProxy(MultiDict())
+        )
+
+    parts = mimetype.split(";")
+    params = MultiDict()  # type: MultiDict[str]
+    for item in parts[1:]:
+        if not item:
+            continue
+        key, value = cast(
+            Tuple[str, str], item.split("=", 1) if "=" in item else (item, "")
+        )
+        params.add(key.lower().strip(), value.strip(' "'))
+
+    fulltype = parts[0].strip().lower()
+    if fulltype == "*":
+        fulltype = "*/*"
+
+    mtype, stype = (
+        cast(Tuple[str, str], fulltype.split("/", 1))
+        if "/" in fulltype
+        else (fulltype, "")
+    )
+    stype, suffix = (
+        cast(Tuple[str, str], stype.split("+", 1)) if "+" in stype else (stype, "")
+    )
+
+    return MimeType(
+        type=mtype, subtype=stype, suffix=suffix, parameters=MultiDictProxy(params)
+    )
+
+
+def guess_filename(obj: Any, default: Optional[str] = None) -> Optional[str]:
+    name = getattr(obj, "name", None)
+    if name and isinstance(name, str) and name[0] != "<" and name[-1] != ">":
+        return Path(name).name
+    return default
+
+
+def content_disposition_header(
+    disptype: str, quote_fields: bool = True, **params: str
+) -> str:
+    """Sets ``Content-Disposition`` header.
+
+    disptype is a disposition type: inline, attachment, form-data.
+    Should be valid extension token (see RFC 2183)
+
+    params is a dict with disposition params.
+    """
+    if not disptype or not (TOKEN > set(disptype)):
+        raise ValueError("bad content disposition type {!r}" "".format(disptype))
+
+    value = disptype
+    if params:
+        lparams = []
+        for key, val in params.items():
+            if not key or not (TOKEN > set(key)):
+                raise ValueError(
+                    "bad content disposition parameter" " {!r}={!r}".format(key, val)
+                )
+            qval = quote(val, "") if quote_fields else val
+            lparams.append((key, '"%s"' % qval))
+            if key == "filename":
+                lparams.append(("filename*", "utf-8''" + qval))
+        sparams = "; ".join("=".join(pair) for pair in lparams)
+        value = "; ".join((value, sparams))
+    return value
+
+
+class _TSelf(Protocol):
+    _cache: Dict[str, Any]
+
+
+class reify(Generic[_T]):
+    """Use as a class method decorator.  It operates almost exactly like
+    the Python `@property` decorator, but it puts the result of the
+    method it decorates into the instance dict after the first call,
+    effectively replacing the function it decorates with an instance
+    variable.  It is, in Python parlance, a data descriptor.
+
+    """
+
+    def __init__(self, wrapped: Callable[..., _T]) -> None:
+        self.wrapped = wrapped
+        self.__doc__ = wrapped.__doc__
+        self.name = wrapped.__name__
+
+    def __get__(self, inst: _TSelf, owner: Optional[Type[Any]] = None) -> _T:
+        try:
+            try:
+                return inst._cache[self.name]
+            except KeyError:
+                val = self.wrapped(inst)
+                inst._cache[self.name] = val
+                return val
+        except AttributeError:
+            if inst is None:
+                return self
+            raise
+
+    def __set__(self, inst: _TSelf, value: _T) -> None:
+        raise AttributeError("reified property is read-only")
+
+
+reify_py = reify
+
+try:
+    from ._helpers import reify as reify_c
+
+    if not NO_EXTENSIONS:
+        reify = reify_c  # type: ignore
+except ImportError:
+    pass
+
+_ipv4_pattern = (
+    r"^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}"
+    r"(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"
+)
+_ipv6_pattern = (
+    r"^(?:(?:(?:[A-F0-9]{1,4}:){6}|(?=(?:[A-F0-9]{0,4}:){0,6}"
+    r"(?:[0-9]{1,3}\.){3}[0-9]{1,3}$)(([0-9A-F]{1,4}:){0,5}|:)"
+    r"((:[0-9A-F]{1,4}){1,5}:|:)|::(?:[A-F0-9]{1,4}:){5})"
+    r"(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}"
+    r"(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])|(?:[A-F0-9]{1,4}:){7}"
+    r"[A-F0-9]{1,4}|(?=(?:[A-F0-9]{0,4}:){0,7}[A-F0-9]{0,4}$)"
+    r"(([0-9A-F]{1,4}:){1,7}|:)((:[0-9A-F]{1,4}){1,7}|:)|(?:[A-F0-9]{1,4}:){7}"
+    r":|:(:[A-F0-9]{1,4}){7})$"
+)
+_ipv4_regex = re.compile(_ipv4_pattern)
+_ipv6_regex = re.compile(_ipv6_pattern, flags=re.IGNORECASE)
+_ipv4_regexb = re.compile(_ipv4_pattern.encode("ascii"))
+_ipv6_regexb = re.compile(_ipv6_pattern.encode("ascii"), flags=re.IGNORECASE)
+
+
+def _is_ip_address(
+    regex: Pattern[str], regexb: Pattern[bytes], host: Optional[Union[str, bytes]]
+) -> bool:
+    if host is None:
+        return False
+    if isinstance(host, str):
+        return bool(regex.match(host))
+    elif isinstance(host, (bytes, bytearray, memoryview)):
+        return bool(regexb.match(host))
+    else:
+        raise TypeError("{} [{}] is not a str or bytes".format(host, type(host)))
+
+
+is_ipv4_address = functools.partial(_is_ip_address, _ipv4_regex, _ipv4_regexb)
+is_ipv6_address = functools.partial(_is_ip_address, _ipv6_regex, _ipv6_regexb)
+
+
+def is_ip_address(host: Optional[Union[str, bytes, bytearray, memoryview]]) -> bool:
+    return is_ipv4_address(host) or is_ipv6_address(host)
+
+
+def next_whole_second() -> datetime.datetime:
+    """Return current time rounded up to the next whole second."""
+    return datetime.datetime.now(datetime.timezone.utc).replace(
+        microsecond=0
+    ) + datetime.timedelta(seconds=0)
+
+
+_cached_current_datetime = None  # type: Optional[int]
+_cached_formatted_datetime = ""
+
+
+def rfc822_formatted_time() -> str:
+    global _cached_current_datetime
+    global _cached_formatted_datetime
+
+    now = int(time.time())
+    if now != _cached_current_datetime:
+        # Weekday and month names for HTTP date/time formatting;
+        # always English!
+        # Tuples are constants stored in codeobject!
+        _weekdayname = ("Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun")
+        _monthname = (
+            "",  # Dummy so we can use 1-based month numbers
+            "Jan",
+            "Feb",
+            "Mar",
+            "Apr",
+            "May",
+            "Jun",
+            "Jul",
+            "Aug",
+            "Sep",
+            "Oct",
+            "Nov",
+            "Dec",
+        )
+
+        year, month, day, hh, mm, ss, wd, *tail = time.gmtime(now)
+        _cached_formatted_datetime = "%s, %02d %3s %4d %02d:%02d:%02d GMT" % (
+            _weekdayname[wd],
+            day,
+            _monthname[month],
+            year,
+            hh,
+            mm,
+            ss,
+        )
+        _cached_current_datetime = now
+    return _cached_formatted_datetime
+
+
+def _weakref_handle(info):  # type: ignore
+    ref, name = info
+    ob = ref()
+    if ob is not None:
+        with suppress(Exception):
+            getattr(ob, name)()
+
+
+def weakref_handle(ob, name, timeout, loop):  # type: ignore
+    if timeout is not None and timeout > 0:
+        when = loop.time() + timeout
+        if timeout >= 5:
+            when = ceil(when)
+
+        return loop.call_at(when, _weakref_handle, (weakref.ref(ob), name))
+
+
+def call_later(cb, timeout, loop):  # type: ignore
+    if timeout is not None and timeout > 0:
+        when = loop.time() + timeout
+        if timeout > 5:
+            when = ceil(when)
+        return loop.call_at(when, cb)
+
+
+class TimeoutHandle:
+    """ Timeout handle """
+
+    def __init__(
+        self, loop: asyncio.AbstractEventLoop, timeout: Optional[float]
+    ) -> None:
+        self._timeout = timeout
+        self._loop = loop
+        self._callbacks = (
+            []
+        )  # type: List[Tuple[Callable[..., None], Tuple[Any, ...], Dict[str, Any]]]
+
+    def register(
+        self, callback: Callable[..., None], *args: Any, **kwargs: Any
+    ) -> None:
+        self._callbacks.append((callback, args, kwargs))
+
+    def close(self) -> None:
+        self._callbacks.clear()
+
+    def start(self) -> Optional[asyncio.Handle]:
+        timeout = self._timeout
+        if timeout is not None and timeout > 0:
+            when = self._loop.time() + timeout
+            if timeout >= 5:
+                when = ceil(when)
+            return self._loop.call_at(when, self.__call__)
+        else:
+            return None
+
+    def timer(self) -> "BaseTimerContext":
+        if self._timeout is not None and self._timeout > 0:
+            timer = TimerContext(self._loop)
+            self.register(timer.timeout)
+            return timer
+        else:
+            return TimerNoop()
+
+    def __call__(self) -> None:
+        for cb, args, kwargs in self._callbacks:
+            with suppress(Exception):
+                cb(*args, **kwargs)
+
+        self._callbacks.clear()
+
+
+class BaseTimerContext(ContextManager["BaseTimerContext"]):
+    pass
+
+
+class TimerNoop(BaseTimerContext):
+    def __enter__(self) -> BaseTimerContext:
+        return self
+
+    def __exit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_val: Optional[BaseException],
+        exc_tb: Optional[TracebackType],
+    ) -> None:
+        return
+
+
+class TimerContext(BaseTimerContext):
+    """ Low resolution timeout context manager """
+
+    def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
+        self._loop = loop
+        self._tasks = []  # type: List[asyncio.Task[Any]]
+        self._cancelled = False
+
+    def __enter__(self) -> BaseTimerContext:
+        task = current_task(loop=self._loop)
+
+        if task is None:
+            raise RuntimeError(
+                "Timeout context manager should be used " "inside a task"
+            )
+
+        if self._cancelled:
+            task.cancel()
+            raise asyncio.TimeoutError from None
+
+        self._tasks.append(task)
+        return self
+
+    def __exit__(
+        self,
+        exc_type: Optional[Type[BaseException]],
+        exc_val: Optional[BaseException],
+        exc_tb: Optional[TracebackType],
+    ) -> Optional[bool]:
+        if self._tasks:
+            self._tasks.pop()
+
+        if exc_type is asyncio.CancelledError and self._cancelled:
+            raise asyncio.TimeoutError from None
+        return None
+
+    def timeout(self) -> None:
+        if not self._cancelled:
+            for task in set(self._tasks):
+                task.cancel()
+
+            self._cancelled = True
+
+
+class CeilTimeout(async_timeout.timeout):
+    def __enter__(self) -> async_timeout.timeout:
+        if self._timeout is not None:
+            self._task = current_task(loop=self._loop)
+            if self._task is None:
+                raise RuntimeError(
+                    "Timeout context manager should be used inside a task"
+                )
+            now = self._loop.time()
+            delay = self._timeout
+            when = now + delay
+            if delay > 5:
+                when = ceil(when)
+            self._cancel_handler = self._loop.call_at(when, self._cancel_task)
+        return self
+
+
+class HeadersMixin:
+
+    ATTRS = frozenset(["_content_type", "_content_dict", "_stored_content_type"])
+
+    _content_type = None  # type: Optional[str]
+    _content_dict = None  # type: Optional[Dict[str, str]]
+    _stored_content_type = sentinel
+
+    def _parse_content_type(self, raw: str) -> None:
+        self._stored_content_type = raw
+        if raw is None:
+            # default value according to RFC 2616
+            self._content_type = "application/octet-stream"
+            self._content_dict = {}
+        else:
+            self._content_type, self._content_dict = cgi.parse_header(raw)
+
+    @property
+    def content_type(self) -> str:
+        """The value of content part for Content-Type HTTP header."""
+        raw = self._headers.get(hdrs.CONTENT_TYPE)  # type: ignore
+        if self._stored_content_type != raw:
+            self._parse_content_type(raw)
+        return self._content_type  # type: ignore
+
+    @property
+    def charset(self) -> Optional[str]:
+        """The value of charset part for Content-Type HTTP header."""
+        raw = self._headers.get(hdrs.CONTENT_TYPE)  # type: ignore
+        if self._stored_content_type != raw:
+            self._parse_content_type(raw)
+        return self._content_dict.get("charset")  # type: ignore
+
+    @property
+    def content_length(self) -> Optional[int]:
+        """The value of Content-Length HTTP header."""
+        content_length = self._headers.get(hdrs.CONTENT_LENGTH)  # type: ignore
+
+        if content_length is not None:
+            return int(content_length)
+        else:
+            return None
+
+
+def set_result(fut: "asyncio.Future[_T]", result: _T) -> None:
+    if not fut.done():
+        fut.set_result(result)
+
+
+def set_exception(fut: "asyncio.Future[_T]", exc: BaseException) -> None:
+    if not fut.done():
+        fut.set_exception(exc)
+
+
+class ChainMapProxy(Mapping[str, Any]):
+    __slots__ = ("_maps",)
+
+    def __init__(self, maps: Iterable[Mapping[str, Any]]) -> None:
+        self._maps = tuple(maps)
+
+    def __init_subclass__(cls) -> None:
+        raise TypeError(
+            "Inheritance class {} from ChainMapProxy "
+            "is forbidden".format(cls.__name__)
+        )
+
+    def __getitem__(self, key: str) -> Any:
+        for mapping in self._maps:
+            try:
+                return mapping[key]
+            except KeyError:
+                pass
+        raise KeyError(key)
+
+    def get(self, key: str, default: Any = None) -> Any:
+        return self[key] if key in self else default
+
+    def __len__(self) -> int:
+        # reuses stored hash values if possible
+        return len(set().union(*self._maps))  # type: ignore
+
+    def __iter__(self) -> Iterator[str]:
+        d = {}  # type: Dict[str, Any]
+        for mapping in reversed(self._maps):
+            # reuses stored hash values if possible
+            d.update(mapping)
+        return iter(d)
+
+    def __contains__(self, key: object) -> bool:
+        return any(key in m for m in self._maps)
+
+    def __bool__(self) -> bool:
+        return any(self._maps)
+
+    def __repr__(self) -> str:
+        content = ", ".join(map(repr, self._maps))
+        return f"ChainMapProxy({content})"

.venv/lib/python3.9/site-packages/aiohttp/http.py

@@ -0,0 +1,72 @@
+import http.server
+import sys
+from typing import Mapping, Tuple
+
+from . import __version__
+from .http_exceptions import HttpProcessingError as HttpProcessingError
+from .http_parser import (
+    HeadersParser as HeadersParser,
+    HttpParser as HttpParser,
+    HttpRequestParser as HttpRequestParser,
+    HttpResponseParser as HttpResponseParser,
+    RawRequestMessage as RawRequestMessage,
+    RawResponseMessage as RawResponseMessage,
+)
+from .http_websocket import (
+    WS_CLOSED_MESSAGE as WS_CLOSED_MESSAGE,
+    WS_CLOSING_MESSAGE as WS_CLOSING_MESSAGE,
+    WS_KEY as WS_KEY,
+    WebSocketError as WebSocketError,
+    WebSocketReader as WebSocketReader,
+    WebSocketWriter as WebSocketWriter,
+    WSCloseCode as WSCloseCode,
+    WSMessage as WSMessage,
+    WSMsgType as WSMsgType,
+    ws_ext_gen as ws_ext_gen,
+    ws_ext_parse as ws_ext_parse,
+)
+from .http_writer import (
+    HttpVersion as HttpVersion,
+    HttpVersion10 as HttpVersion10,
+    HttpVersion11 as HttpVersion11,
+    StreamWriter as StreamWriter,
+)
+
+__all__ = (
+    "HttpProcessingError",
+    "RESPONSES",
+    "SERVER_SOFTWARE",
+    # .http_writer
+    "StreamWriter",
+    "HttpVersion",
+    "HttpVersion10",
+    "HttpVersion11",
+    # .http_parser
+    "HeadersParser",
+    "HttpParser",
+    "HttpRequestParser",
+    "HttpResponseParser",
+    "RawRequestMessage",
+    "RawResponseMessage",
+    # .http_websocket
+    "WS_CLOSED_MESSAGE",
+    "WS_CLOSING_MESSAGE",
+    "WS_KEY",
+    "WebSocketReader",
+    "WebSocketWriter",
+    "ws_ext_gen",
+    "ws_ext_parse",
+    "WSMessage",
+    "WebSocketError",
+    "WSMsgType",
+    "WSCloseCode",
+)
+
+
+SERVER_SOFTWARE = "Python/{0[0]}.{0[1]} aiohttp/{1}".format(
+    sys.version_info, __version__
+)  # type: str
+
+RESPONSES = (
+    http.server.BaseHTTPRequestHandler.responses
+)  # type: Mapping[int, Tuple[str, str]]

.venv/lib/python3.9/site-packages/aiohttp/http_exceptions.py

@@ -0,0 +1,105 @@
+"""Low-level http related exceptions."""
+
+
+from typing import Optional, Union
+
+from .typedefs import _CIMultiDict
+
+__all__ = ("HttpProcessingError",)
+
+
+class HttpProcessingError(Exception):
+    """HTTP error.
+
+    Shortcut for raising HTTP errors with custom code, message and headers.
+
+    code: HTTP Error code.
+    message: (optional) Error message.
+    headers: (optional) Headers to be sent in response, a list of pairs
+    """
+
+    code = 0
+    message = ""
+    headers = None
+
+    def __init__(
+        self,
+        *,
+        code: Optional[int] = None,
+        message: str = "",
+        headers: Optional[_CIMultiDict] = None,
+    ) -> None:
+        if code is not None:
+            self.code = code
+        self.headers = headers
+        self.message = message
+
+    def __str__(self) -> str:
+        return f"{self.code}, message={self.message!r}"
+
+    def __repr__(self) -> str:
+        return f"<{self.__class__.__name__}: {self}>"
+
+
+class BadHttpMessage(HttpProcessingError):
+
+    code = 400
+    message = "Bad Request"
+
+    def __init__(self, message: str, *, headers: Optional[_CIMultiDict] = None) -> None:
+        super().__init__(message=message, headers=headers)
+        self.args = (message,)
+
+
+class HttpBadRequest(BadHttpMessage):
+
+    code = 400
+    message = "Bad Request"
+
+
+class PayloadEncodingError(BadHttpMessage):
+    """Base class for payload errors"""
+
+
+class ContentEncodingError(PayloadEncodingError):
+    """Content encoding error."""
+
+
+class TransferEncodingError(PayloadEncodingError):
+    """transfer encoding error."""
+
+
+class ContentLengthError(PayloadEncodingError):
+    """Not enough data for satisfy content length header."""
+
+
+class LineTooLong(BadHttpMessage):
+    def __init__(
+        self, line: str, limit: str = "Unknown", actual_size: str = "Unknown"
+    ) -> None:
+        super().__init__(
+            f"Got more than {limit} bytes ({actual_size}) when reading {line}."
+        )
+        self.args = (line, limit, actual_size)
+
+
+class InvalidHeader(BadHttpMessage):
+    def __init__(self, hdr: Union[bytes, str]) -> None:
+        if isinstance(hdr, bytes):
+            hdr = hdr.decode("utf-8", "surrogateescape")
+        super().__init__(f"Invalid HTTP Header: {hdr}")
+        self.hdr = hdr
+        self.args = (hdr,)
+
+
+class BadStatusLine(BadHttpMessage):
+    def __init__(self, line: str = "") -> None:
+        if not isinstance(line, str):
+            line = repr(line)
+        super().__init__(f"Bad status line {line!r}")
+        self.args = (line,)
+        self.line = line
+
+
+class InvalidURLError(BadHttpMessage):
+    pass

.venv/lib/python3.9/site-packages/aiohttp/http_parser.py

@@ -0,0 +1,901 @@
+import abc
+import asyncio
+import collections
+import re
+import string
+import zlib
+from enum import IntEnum
+from typing import Any, List, Optional, Tuple, Type, Union
+
+from multidict import CIMultiDict, CIMultiDictProxy, istr
+from yarl import URL
+
+from . import hdrs
+from .base_protocol import BaseProtocol
+from .helpers import NO_EXTENSIONS, BaseTimerContext
+from .http_exceptions import (
+    BadStatusLine,
+    ContentEncodingError,
+    ContentLengthError,
+    InvalidHeader,
+    LineTooLong,
+    TransferEncodingError,
+)
+from .http_writer import HttpVersion, HttpVersion10
+from .log import internal_logger
+from .streams import EMPTY_PAYLOAD, StreamReader
+from .typedefs import RawHeaders
+
+try:
+    import brotli
+
+    HAS_BROTLI = True
+except ImportError:  # pragma: no cover
+    HAS_BROTLI = False
+
+
+__all__ = (
+    "HeadersParser",
+    "HttpParser",
+    "HttpRequestParser",
+    "HttpResponseParser",
+    "RawRequestMessage",
+    "RawResponseMessage",
+)
+
+ASCIISET = set(string.printable)
+
+# See https://tools.ietf.org/html/rfc7230#section-3.1.1
+# and https://tools.ietf.org/html/rfc7230#appendix-B
+#
+#     method = token
+#     tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "." /
+#             "^" / "_" / "`" / "|" / "~" / DIGIT / ALPHA
+#     token = 1*tchar
+METHRE = re.compile(r"[!#$%&'*+\-.^_`|~0-9A-Za-z]+")
+VERSRE = re.compile(r"HTTP/(\d+).(\d+)")
+HDRRE = re.compile(rb"[\x00-\x1F\x7F()<>@,;:\[\]={} \t\\\\\"]")
+
+RawRequestMessage = collections.namedtuple(
+    "RawRequestMessage",
+    [
+        "method",
+        "path",
+        "version",
+        "headers",
+        "raw_headers",
+        "should_close",
+        "compression",
+        "upgrade",
+        "chunked",
+        "url",
+    ],
+)
+
+RawResponseMessage = collections.namedtuple(
+    "RawResponseMessage",
+    [
+        "version",
+        "code",
+        "reason",
+        "headers",
+        "raw_headers",
+        "should_close",
+        "compression",
+        "upgrade",
+        "chunked",
+    ],
+)
+
+
+class ParseState(IntEnum):
+
+    PARSE_NONE = 0
+    PARSE_LENGTH = 1
+    PARSE_CHUNKED = 2
+    PARSE_UNTIL_EOF = 3
+
+
+class ChunkState(IntEnum):
+    PARSE_CHUNKED_SIZE = 0
+    PARSE_CHUNKED_CHUNK = 1
+    PARSE_CHUNKED_CHUNK_EOF = 2
+    PARSE_MAYBE_TRAILERS = 3
+    PARSE_TRAILERS = 4
+
+
+class HeadersParser:
+    def __init__(
+        self,
+        max_line_size: int = 8190,
+        max_headers: int = 32768,
+        max_field_size: int = 8190,
+    ) -> None:
+        self.max_line_size = max_line_size
+        self.max_headers = max_headers
+        self.max_field_size = max_field_size
+
+    def parse_headers(
+        self, lines: List[bytes]
+    ) -> Tuple["CIMultiDictProxy[str]", RawHeaders]:
+        headers = CIMultiDict()  # type: CIMultiDict[str]
+        raw_headers = []
+
+        lines_idx = 1
+        line = lines[1]
+        line_count = len(lines)
+
+        while line:
+            # Parse initial header name : value pair.
+            try:
+                bname, bvalue = line.split(b":", 1)
+            except ValueError:
+                raise InvalidHeader(line) from None
+
+            bname = bname.strip(b" \t")
+            bvalue = bvalue.lstrip()
+            if HDRRE.search(bname):
+                raise InvalidHeader(bname)
+            if len(bname) > self.max_field_size:
+                raise LineTooLong(
+                    "request header name {}".format(
+                        bname.decode("utf8", "xmlcharrefreplace")
+                    ),
+                    str(self.max_field_size),
+                    str(len(bname)),
+                )
+
+            header_length = len(bvalue)
+
+            # next line
+            lines_idx += 1
+            line = lines[lines_idx]
+
+            # consume continuation lines
+            continuation = line and line[0] in (32, 9)  # (' ', '\t')
+
+            if continuation:
+                bvalue_lst = [bvalue]
+                while continuation:
+                    header_length += len(line)
+                    if header_length > self.max_field_size:
+                        raise LineTooLong(
+                            "request header field {}".format(
+                                bname.decode("utf8", "xmlcharrefreplace")
+                            ),
+                            str(self.max_field_size),
+                            str(header_length),
+                        )
+                    bvalue_lst.append(line)
+
+                    # next line
+                    lines_idx += 1
+                    if lines_idx < line_count:
+                        line = lines[lines_idx]
+                        if line:
+                            continuation = line[0] in (32, 9)  # (' ', '\t')
+                    else:
+                        line = b""
+                        break
+                bvalue = b"".join(bvalue_lst)
+            else:
+                if header_length > self.max_field_size:
+                    raise LineTooLong(
+                        "request header field {}".format(
+                            bname.decode("utf8", "xmlcharrefreplace")
+                        ),
+                        str(self.max_field_size),
+                        str(header_length),
+                    )
+
+            bvalue = bvalue.strip()
+            name = bname.decode("utf-8", "surrogateescape")
+            value = bvalue.decode("utf-8", "surrogateescape")
+
+            headers.add(name, value)
+            raw_headers.append((bname, bvalue))
+
+        return (CIMultiDictProxy(headers), tuple(raw_headers))
+
+
+class HttpParser(abc.ABC):
+    def __init__(
+        self,
+        protocol: Optional[BaseProtocol] = None,
+        loop: Optional[asyncio.AbstractEventLoop] = None,
+        limit: int = 2 ** 16,
+        max_line_size: int = 8190,
+        max_headers: int = 32768,
+        max_field_size: int = 8190,
+        timer: Optional[BaseTimerContext] = None,
+        code: Optional[int] = None,
+        method: Optional[str] = None,
+        readall: bool = False,
+        payload_exception: Optional[Type[BaseException]] = None,
+        response_with_body: bool = True,
+        read_until_eof: bool = False,
+        auto_decompress: bool = True,
+    ) -> None:
+        self.protocol = protocol
+        self.loop = loop
+        self.max_line_size = max_line_size
+        self.max_headers = max_headers
+        self.max_field_size = max_field_size
+        self.timer = timer
+        self.code = code
+        self.method = method
+        self.readall = readall
+        self.payload_exception = payload_exception
+        self.response_with_body = response_with_body
+        self.read_until_eof = read_until_eof
+
+        self._lines = []  # type: List[bytes]
+        self._tail = b""
+        self._upgraded = False
+        self._payload = None
+        self._payload_parser = None  # type: Optional[HttpPayloadParser]
+        self._auto_decompress = auto_decompress
+        self._limit = limit
+        self._headers_parser = HeadersParser(max_line_size, max_headers, max_field_size)
+
+    @abc.abstractmethod
+    def parse_message(self, lines: List[bytes]) -> Any:
+        pass
+
+    def feed_eof(self) -> Any:
+        if self._payload_parser is not None:
+            self._payload_parser.feed_eof()
+            self._payload_parser = None
+        else:
+            # try to extract partial message
+            if self._tail:
+                self._lines.append(self._tail)
+
+            if self._lines:
+                if self._lines[-1] != "\r\n":
+                    self._lines.append(b"")
+                try:
+                    return self.parse_message(self._lines)
+                except Exception:
+                    return None
+
+    def feed_data(
+        self,
+        data: bytes,
+        SEP: bytes = b"\r\n",
+        EMPTY: bytes = b"",
+        CONTENT_LENGTH: istr = hdrs.CONTENT_LENGTH,
+        METH_CONNECT: str = hdrs.METH_CONNECT,
+        SEC_WEBSOCKET_KEY1: istr = hdrs.SEC_WEBSOCKET_KEY1,
+    ) -> Tuple[List[Any], bool, bytes]:
+
+        messages = []
+
+        if self._tail:
+            data, self._tail = self._tail + data, b""
+
+        data_len = len(data)
+        start_pos = 0
+        loop = self.loop
+
+        while start_pos < data_len:
+
+            # read HTTP message (request/response line + headers), \r\n\r\n
+            # and split by lines
+            if self._payload_parser is None and not self._upgraded:
+                pos = data.find(SEP, start_pos)
+                # consume \r\n
+                if pos == start_pos and not self._lines:
+                    start_pos = pos + 2
+                    continue
+
+                if pos >= start_pos:
+                    # line found
+                    self._lines.append(data[start_pos:pos])
+                    start_pos = pos + 2
+
+                    # \r\n\r\n found
+                    if self._lines[-1] == EMPTY:
+                        try:
+                            msg = self.parse_message(self._lines)
+                        finally:
+                            self._lines.clear()
+
+                        # payload length
+                        length = msg.headers.get(CONTENT_LENGTH)
+                        if length is not None:
+                            try:
+                                length = int(length)
+                            except ValueError:
+                                raise InvalidHeader(CONTENT_LENGTH)
+                            if length < 0:
+                                raise InvalidHeader(CONTENT_LENGTH)
+
+                        # do not support old websocket spec
+                        if SEC_WEBSOCKET_KEY1 in msg.headers:
+                            raise InvalidHeader(SEC_WEBSOCKET_KEY1)
+
+                        self._upgraded = msg.upgrade
+
+                        method = getattr(msg, "method", self.method)
+
+                        assert self.protocol is not None
+                        # calculate payload
+                        if (
+                            (length is not None and length > 0)
+                            or msg.chunked
+                            and not msg.upgrade
+                        ):
+                            payload = StreamReader(
+                                self.protocol,
+                                timer=self.timer,
+                                loop=loop,
+                                limit=self._limit,
+                            )
+                            payload_parser = HttpPayloadParser(
+                                payload,
+                                length=length,
+                                chunked=msg.chunked,
+                                method=method,
+                                compression=msg.compression,
+                                code=self.code,
+                                readall=self.readall,
+                                response_with_body=self.response_with_body,
+                                auto_decompress=self._auto_decompress,
+                            )
+                            if not payload_parser.done:
+                                self._payload_parser = payload_parser
+                        elif method == METH_CONNECT:
+                            payload = StreamReader(
+                                self.protocol,
+                                timer=self.timer,
+                                loop=loop,
+                                limit=self._limit,
+                            )
+                            self._upgraded = True
+                            self._payload_parser = HttpPayloadParser(
+                                payload,
+                                method=msg.method,
+                                compression=msg.compression,
+                                readall=True,
+                                auto_decompress=self._auto_decompress,
+                            )
+                        else:
+                            if (
+                                getattr(msg, "code", 100) >= 199
+                                and length is None
+                                and self.read_until_eof
+                            ):
+                                payload = StreamReader(
+                                    self.protocol,
+                                    timer=self.timer,
+                                    loop=loop,
+                                    limit=self._limit,
+                                )
+                                payload_parser = HttpPayloadParser(
+                                    payload,
+                                    length=length,
+                                    chunked=msg.chunked,
+                                    method=method,
+                                    compression=msg.compression,
+                                    code=self.code,
+                                    readall=True,
+                                    response_with_body=self.response_with_body,
+                                    auto_decompress=self._auto_decompress,
+                                )
+                                if not payload_parser.done:
+                                    self._payload_parser = payload_parser
+                            else:
+                                payload = EMPTY_PAYLOAD  # type: ignore
+
+                        messages.append((msg, payload))
+                else:
+                    self._tail = data[start_pos:]
+                    data = EMPTY
+                    break
+
+            # no parser, just store
+            elif self._payload_parser is None and self._upgraded:
+                assert not self._lines
+                break
+
+            # feed payload
+            elif data and start_pos < data_len:
+                assert not self._lines
+                assert self._payload_parser is not None
+                try:
+                    eof, data = self._payload_parser.feed_data(data[start_pos:])
+                except BaseException as exc:
+                    if self.payload_exception is not None:
+                        self._payload_parser.payload.set_exception(
+                            self.payload_exception(str(exc))
+                        )
+                    else:
+                        self._payload_parser.payload.set_exception(exc)
+
+                    eof = True
+                    data = b""
+
+                if eof:
+                    start_pos = 0
+                    data_len = len(data)
+                    self._payload_parser = None
+                    continue
+            else:
+                break
+
+        if data and start_pos < data_len:
+            data = data[start_pos:]
+        else:
+            data = EMPTY
+
+        return messages, self._upgraded, data
+
+    def parse_headers(
+        self, lines: List[bytes]
+    ) -> Tuple[
+        "CIMultiDictProxy[str]", RawHeaders, Optional[bool], Optional[str], bool, bool
+    ]:
+        """Parses RFC 5322 headers from a stream.
+
+        Line continuations are supported. Returns list of header name
+        and value pairs. Header name is in upper case.
+        """
+        headers, raw_headers = self._headers_parser.parse_headers(lines)
+        close_conn = None
+        encoding = None
+        upgrade = False
+        chunked = False
+
+        # keep-alive
+        conn = headers.get(hdrs.CONNECTION)
+        if conn:
+            v = conn.lower()
+            if v == "close":
+                close_conn = True
+            elif v == "keep-alive":
+                close_conn = False
+            elif v == "upgrade":
+                upgrade = True
+
+        # encoding
+        enc = headers.get(hdrs.CONTENT_ENCODING)
+        if enc:
+            enc = enc.lower()
+            if enc in ("gzip", "deflate", "br"):
+                encoding = enc
+
+        # chunking
+        te = headers.get(hdrs.TRANSFER_ENCODING)
+        if te and "chunked" in te.lower():
+            chunked = True
+
+        return (headers, raw_headers, close_conn, encoding, upgrade, chunked)
+
+    def set_upgraded(self, val: bool) -> None:
+        """Set connection upgraded (to websocket) mode.
+        :param bool val: new state.
+        """
+        self._upgraded = val
+
+
+class HttpRequestParser(HttpParser):
+    """Read request status line. Exception .http_exceptions.BadStatusLine
+    could be raised in case of any errors in status line.
+    Returns RawRequestMessage.
+    """
+
+    def parse_message(self, lines: List[bytes]) -> Any:
+        # request line
+        line = lines[0].decode("utf-8", "surrogateescape")
+        try:
+            method, path, version = line.split(None, 2)
+        except ValueError:
+            raise BadStatusLine(line) from None
+
+        if len(path) > self.max_line_size:
+            raise LineTooLong(
+                "Status line is too long", str(self.max_line_size), str(len(path))
+            )
+
+        path_part, _hash_separator, url_fragment = path.partition("#")
+        path_part, _question_mark_separator, qs_part = path_part.partition("?")
+
+        # method
+        if not METHRE.match(method):
+            raise BadStatusLine(method)
+
+        # version
+        try:
+            if version.startswith("HTTP/"):
+                n1, n2 = version[5:].split(".", 1)
+                version_o = HttpVersion(int(n1), int(n2))
+            else:
+                raise BadStatusLine(version)
+        except Exception:
+            raise BadStatusLine(version)
+
+        # read headers
+        (
+            headers,
+            raw_headers,
+            close,
+            compression,
+            upgrade,
+            chunked,
+        ) = self.parse_headers(lines)
+
+        if close is None:  # then the headers weren't set in the request
+            if version_o <= HttpVersion10:  # HTTP 1.0 must asks to not close
+                close = True
+            else:  # HTTP 1.1 must ask to close.
+                close = False
+
+        return RawRequestMessage(
+            method,
+            path,
+            version_o,
+            headers,
+            raw_headers,
+            close,
+            compression,
+            upgrade,
+            chunked,
+            # NOTE: `yarl.URL.build()` is used to mimic what the Cython-based
+            # NOTE: parser does, otherwise it results into the same
+            # NOTE: HTTP Request-Line input producing different
+            # NOTE: `yarl.URL()` objects
+            URL.build(
+                path=path_part,
+                query_string=qs_part,
+                fragment=url_fragment,
+                encoded=True,
+            ),
+        )
+
+
+class HttpResponseParser(HttpParser):
+    """Read response status line and headers.
+
+    BadStatusLine could be raised in case of any errors in status line.
+    Returns RawResponseMessage"""
+
+    def parse_message(self, lines: List[bytes]) -> Any:
+        line = lines[0].decode("utf-8", "surrogateescape")
+        try:
+            version, status = line.split(None, 1)
+        except ValueError:
+            raise BadStatusLine(line) from None
+
+        try:
+            status, reason = status.split(None, 1)
+        except ValueError:
+            reason = ""
+
+        if len(reason) > self.max_line_size:
+            raise LineTooLong(
+                "Status line is too long", str(self.max_line_size), str(len(reason))
+            )
+
+        # version
+        match = VERSRE.match(version)
+        if match is None:
+            raise BadStatusLine(line)
+        version_o = HttpVersion(int(match.group(1)), int(match.group(2)))
+
+        # The status code is a three-digit number
+        try:
+            status_i = int(status)
+        except ValueError:
+            raise BadStatusLine(line) from None
+
+        if status_i > 999:
+            raise BadStatusLine(line)
+
+        # read headers
+        (
+            headers,
+            raw_headers,
+            close,
+            compression,
+            upgrade,
+            chunked,
+        ) = self.parse_headers(lines)
+
+        if close is None:
+            close = version_o <= HttpVersion10
+
+        return RawResponseMessage(
+            version_o,
+            status_i,
+            reason.strip(),
+            headers,
+            raw_headers,
+            close,
+            compression,
+            upgrade,
+            chunked,
+        )
+
+
+class HttpPayloadParser:
+    def __init__(
+        self,
+        payload: StreamReader,
+        length: Optional[int] = None,
+        chunked: bool = False,
+        compression: Optional[str] = None,
+        code: Optional[int] = None,
+        method: Optional[str] = None,
+        readall: bool = False,
+        response_with_body: bool = True,
+        auto_decompress: bool = True,
+    ) -> None:
+        self._length = 0
+        self._type = ParseState.PARSE_NONE
+        self._chunk = ChunkState.PARSE_CHUNKED_SIZE
+        self._chunk_size = 0
+        self._chunk_tail = b""
+        self._auto_decompress = auto_decompress
+        self.done = False
+
+        # payload decompression wrapper
+        if response_with_body and compression and self._auto_decompress:
+            real_payload = DeflateBuffer(
+                payload, compression
+            )  # type: Union[StreamReader, DeflateBuffer]
+        else:
+            real_payload = payload
+
+        # payload parser
+        if not response_with_body:
+            # don't parse payload if it's not expected to be received
+            self._type = ParseState.PARSE_NONE
+            real_payload.feed_eof()
+            self.done = True
+
+        elif chunked:
+            self._type = ParseState.PARSE_CHUNKED
+        elif length is not None:
+            self._type = ParseState.PARSE_LENGTH
+            self._length = length
+            if self._length == 0:
+                real_payload.feed_eof()
+                self.done = True
+        else:
+            if readall and code != 204:
+                self._type = ParseState.PARSE_UNTIL_EOF
+            elif method in ("PUT", "POST"):
+                internal_logger.warning(  # pragma: no cover
+                    "Content-Length or Transfer-Encoding header is required"
+                )
+                self._type = ParseState.PARSE_NONE
+                real_payload.feed_eof()
+                self.done = True
+
+        self.payload = real_payload
+
+    def feed_eof(self) -> None:
+        if self._type == ParseState.PARSE_UNTIL_EOF:
+            self.payload.feed_eof()
+        elif self._type == ParseState.PARSE_LENGTH:
+            raise ContentLengthError(
+                "Not enough data for satisfy content length header."
+            )
+        elif self._type == ParseState.PARSE_CHUNKED:
+            raise TransferEncodingError(
+                "Not enough data for satisfy transfer length header."
+            )
+
+    def feed_data(
+        self, chunk: bytes, SEP: bytes = b"\r\n", CHUNK_EXT: bytes = b";"
+    ) -> Tuple[bool, bytes]:
+        # Read specified amount of bytes
+        if self._type == ParseState.PARSE_LENGTH:
+            required = self._length
+            chunk_len = len(chunk)
+
+            if required >= chunk_len:
+                self._length = required - chunk_len
+                self.payload.feed_data(chunk, chunk_len)
+                if self._length == 0:
+                    self.payload.feed_eof()
+                    return True, b""
+            else:
+                self._length = 0
+                self.payload.feed_data(chunk[:required], required)
+                self.payload.feed_eof()
+                return True, chunk[required:]
+
+        # Chunked transfer encoding parser
+        elif self._type == ParseState.PARSE_CHUNKED:
+            if self._chunk_tail:
+                chunk = self._chunk_tail + chunk
+                self._chunk_tail = b""
+
+            while chunk:
+
+                # read next chunk size
+                if self._chunk == ChunkState.PARSE_CHUNKED_SIZE:
+                    pos = chunk.find(SEP)
+                    if pos >= 0:
+                        i = chunk.find(CHUNK_EXT, 0, pos)
+                        if i >= 0:
+                            size_b = chunk[:i]  # strip chunk-extensions
+                        else:
+                            size_b = chunk[:pos]
+
+                        try:
+                            size = int(bytes(size_b), 16)
+                        except ValueError:
+                            exc = TransferEncodingError(
+                                chunk[:pos].decode("ascii", "surrogateescape")
+                            )
+                            self.payload.set_exception(exc)
+                            raise exc from None
+
+                        chunk = chunk[pos + 2 :]
+                        if size == 0:  # eof marker
+                            self._chunk = ChunkState.PARSE_MAYBE_TRAILERS
+                        else:
+                            self._chunk = ChunkState.PARSE_CHUNKED_CHUNK
+                            self._chunk_size = size
+                            self.payload.begin_http_chunk_receiving()
+                    else:
+                        self._chunk_tail = chunk
+                        return False, b""
+
+                # read chunk and feed buffer
+                if self._chunk == ChunkState.PARSE_CHUNKED_CHUNK:
+                    required = self._chunk_size
+                    chunk_len = len(chunk)
+
+                    if required > chunk_len:
+                        self._chunk_size = required - chunk_len
+                        self.payload.feed_data(chunk, chunk_len)
+                        return False, b""
+                    else:
+                        self._chunk_size = 0
+                        self.payload.feed_data(chunk[:required], required)
+                        chunk = chunk[required:]
+                        self._chunk = ChunkState.PARSE_CHUNKED_CHUNK_EOF
+                        self.payload.end_http_chunk_receiving()
+
+                # toss the CRLF at the end of the chunk
+                if self._chunk == ChunkState.PARSE_CHUNKED_CHUNK_EOF:
+                    if chunk[:2] == SEP:
+                        chunk = chunk[2:]
+                        self._chunk = ChunkState.PARSE_CHUNKED_SIZE
+                    else:
+                        self._chunk_tail = chunk
+                        return False, b""
+
+                # if stream does not contain trailer, after 0\r\n
+                # we should get another \r\n otherwise
+                # trailers needs to be skiped until \r\n\r\n
+                if self._chunk == ChunkState.PARSE_MAYBE_TRAILERS:
+                    head = chunk[:2]
+                    if head == SEP:
+                        # end of stream
+                        self.payload.feed_eof()
+                        return True, chunk[2:]
+                    # Both CR and LF, or only LF may not be received yet. It is
+                    # expected that CRLF or LF will be shown at the very first
+                    # byte next time, otherwise trailers should come. The last
+                    # CRLF which marks the end of response might not be
+                    # contained in the same TCP segment which delivered the
+                    # size indicator.
+                    if not head:
+                        return False, b""
+                    if head == SEP[:1]:
+                        self._chunk_tail = head
+                        return False, b""
+                    self._chunk = ChunkState.PARSE_TRAILERS
+
+                # read and discard trailer up to the CRLF terminator
+                if self._chunk == ChunkState.PARSE_TRAILERS:
+                    pos = chunk.find(SEP)
+                    if pos >= 0:
+                        chunk = chunk[pos + 2 :]
+                        self._chunk = ChunkState.PARSE_MAYBE_TRAILERS
+                    else:
+                        self._chunk_tail = chunk
+                        return False, b""
+
+        # Read all bytes until eof
+        elif self._type == ParseState.PARSE_UNTIL_EOF:
+            self.payload.feed_data(chunk, len(chunk))
+
+        return False, b""
+
+
+class DeflateBuffer:
+    """DeflateStream decompress stream and feed data into specified stream."""
+
+    def __init__(self, out: StreamReader, encoding: Optional[str]) -> None:
+        self.out = out
+        self.size = 0
+        self.encoding = encoding
+        self._started_decoding = False
+
+        if encoding == "br":
+            if not HAS_BROTLI:  # pragma: no cover
+                raise ContentEncodingError(
+                    "Can not decode content-encoding: brotli (br). "
+                    "Please install `brotlipy`"
+                )
+            self.decompressor = brotli.Decompressor()
+        else:
+            zlib_mode = 16 + zlib.MAX_WBITS if encoding == "gzip" else zlib.MAX_WBITS
+            self.decompressor = zlib.decompressobj(wbits=zlib_mode)
+
+    def set_exception(self, exc: BaseException) -> None:
+        self.out.set_exception(exc)
+
+    def feed_data(self, chunk: bytes, size: int) -> None:
+        if not size:
+            return
+
+        self.size += size
+
+        # RFC1950
+        # bits 0..3 = CM = 0b1000 = 8 = "deflate"
+        # bits 4..7 = CINFO = 1..7 = windows size.
+        if (
+            not self._started_decoding
+            and self.encoding == "deflate"
+            and chunk[0] & 0xF != 8
+        ):
+            # Change the decoder to decompress incorrectly compressed data
+            # Actually we should issue a warning about non-RFC-compliant data.
+            self.decompressor = zlib.decompressobj(wbits=-zlib.MAX_WBITS)
+
+        try:
+            chunk = self.decompressor.decompress(chunk)
+        except Exception:
+            raise ContentEncodingError(
+                "Can not decode content-encoding: %s" % self.encoding
+            )
+
+        self._started_decoding = True
+
+        if chunk:
+            self.out.feed_data(chunk, len(chunk))
+
+    def feed_eof(self) -> None:
+        chunk = self.decompressor.flush()
+
+        if chunk or self.size > 0:
+            self.out.feed_data(chunk, len(chunk))
+            if self.encoding == "deflate" and not self.decompressor.eof:
+                raise ContentEncodingError("deflate")
+
+        self.out.feed_eof()
+
+    def begin_http_chunk_receiving(self) -> None:
+        self.out.begin_http_chunk_receiving()
+
+    def end_http_chunk_receiving(self) -> None:
+        self.out.end_http_chunk_receiving()
+
+
+HttpRequestParserPy = HttpRequestParser
+HttpResponseParserPy = HttpResponseParser
+RawRequestMessagePy = RawRequestMessage
+RawResponseMessagePy = RawResponseMessage
+
+try:
+    if not NO_EXTENSIONS:
+        from ._http_parser import (  # type: ignore
+            HttpRequestParser,
+            HttpResponseParser,
+            RawRequestMessage,
+            RawResponseMessage,
+        )
+
+        HttpRequestParserC = HttpRequestParser
+        HttpResponseParserC = HttpResponseParser
+        RawRequestMessageC = RawRequestMessage
+        RawResponseMessageC = RawResponseMessage
+except ImportError:  # pragma: no cover
+    pass

.venv/lib/python3.9/site-packages/aiohttp/http_websocket.py

@@ -0,0 +1,698 @@
+"""WebSocket protocol versions 13 and 8."""
+
+import asyncio
+import collections
+import json
+import random
+import re
+import sys
+import zlib
+from enum import IntEnum
+from struct import Struct
+from typing import Any, Callable, List, Optional, Tuple, Union
+
+from .base_protocol import BaseProtocol
+from .helpers import NO_EXTENSIONS
+from .streams import DataQueue
+
+__all__ = (
+    "WS_CLOSED_MESSAGE",
+    "WS_CLOSING_MESSAGE",
+    "WS_KEY",
+    "WebSocketReader",
+    "WebSocketWriter",
+    "WSMessage",
+    "WebSocketError",
+    "WSMsgType",
+    "WSCloseCode",
+)
+
+
+class WSCloseCode(IntEnum):
+    OK = 1000
+    GOING_AWAY = 1001
+    PROTOCOL_ERROR = 1002
+    UNSUPPORTED_DATA = 1003
+    INVALID_TEXT = 1007
+    POLICY_VIOLATION = 1008
+    MESSAGE_TOO_BIG = 1009
+    MANDATORY_EXTENSION = 1010
+    INTERNAL_ERROR = 1011
+    SERVICE_RESTART = 1012
+    TRY_AGAIN_LATER = 1013
+
+
+ALLOWED_CLOSE_CODES = {int(i) for i in WSCloseCode}
+
+
+class WSMsgType(IntEnum):
+    # websocket spec types
+    CONTINUATION = 0x0
+    TEXT = 0x1
+    BINARY = 0x2
+    PING = 0x9
+    PONG = 0xA
+    CLOSE = 0x8
+
+    # aiohttp specific types
+    CLOSING = 0x100
+    CLOSED = 0x101
+    ERROR = 0x102
+
+    text = TEXT
+    binary = BINARY
+    ping = PING
+    pong = PONG
+    close = CLOSE
+    closing = CLOSING
+    closed = CLOSED
+    error = ERROR
+
+
+WS_KEY = b"258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
+
+
+UNPACK_LEN2 = Struct("!H").unpack_from
+UNPACK_LEN3 = Struct("!Q").unpack_from
+UNPACK_CLOSE_CODE = Struct("!H").unpack
+PACK_LEN1 = Struct("!BB").pack
+PACK_LEN2 = Struct("!BBH").pack
+PACK_LEN3 = Struct("!BBQ").pack
+PACK_CLOSE_CODE = Struct("!H").pack
+MSG_SIZE = 2 ** 14
+DEFAULT_LIMIT = 2 ** 16
+
+
+_WSMessageBase = collections.namedtuple("_WSMessageBase", ["type", "data", "extra"])
+
+
+class WSMessage(_WSMessageBase):
+    def json(self, *, loads: Callable[[Any], Any] = json.loads) -> Any:
+        """Return parsed JSON data.
+
+        .. versionadded:: 0.22
+        """
+        return loads(self.data)
+
+
+WS_CLOSED_MESSAGE = WSMessage(WSMsgType.CLOSED, None, None)
+WS_CLOSING_MESSAGE = WSMessage(WSMsgType.CLOSING, None, None)
+
+
+class WebSocketError(Exception):
+    """WebSocket protocol parser error."""
+
+    def __init__(self, code: int, message: str) -> None:
+        self.code = code
+        super().__init__(code, message)
+
+    def __str__(self) -> str:
+        return self.args[1]
+
+
+class WSHandshakeError(Exception):
+    """WebSocket protocol handshake error."""
+
+
+native_byteorder = sys.byteorder
+
+
+# Used by _websocket_mask_python
+_XOR_TABLE = [bytes(a ^ b for a in range(256)) for b in range(256)]
+
+
+def _websocket_mask_python(mask: bytes, data: bytearray) -> None:
+    """Websocket masking function.
+
+    `mask` is a `bytes` object of length 4; `data` is a `bytearray`
+    object of any length. The contents of `data` are masked with `mask`,
+    as specified in section 5.3 of RFC 6455.
+
+    Note that this function mutates the `data` argument.
+
+    This pure-python implementation may be replaced by an optimized
+    version when available.
+
+    """
+    assert isinstance(data, bytearray), data
+    assert len(mask) == 4, mask
+
+    if data:
+        a, b, c, d = (_XOR_TABLE[n] for n in mask)
+        data[::4] = data[::4].translate(a)
+        data[1::4] = data[1::4].translate(b)
+        data[2::4] = data[2::4].translate(c)
+        data[3::4] = data[3::4].translate(d)
+
+
+if NO_EXTENSIONS:  # pragma: no cover
+    _websocket_mask = _websocket_mask_python
+else:
+    try:
+        from ._websocket import _websocket_mask_cython  # type: ignore
+
+        _websocket_mask = _websocket_mask_cython
+    except ImportError:  # pragma: no cover
+        _websocket_mask = _websocket_mask_python
+
+_WS_DEFLATE_TRAILING = bytes([0x00, 0x00, 0xFF, 0xFF])
+
+
+_WS_EXT_RE = re.compile(
+    r"^(?:;\s*(?:"
+    r"(server_no_context_takeover)|"
+    r"(client_no_context_takeover)|"
+    r"(server_max_window_bits(?:=(\d+))?)|"
+    r"(client_max_window_bits(?:=(\d+))?)))*$"
+)
+
+_WS_EXT_RE_SPLIT = re.compile(r"permessage-deflate([^,]+)?")
+
+
+def ws_ext_parse(extstr: Optional[str], isserver: bool = False) -> Tuple[int, bool]:
+    if not extstr:
+        return 0, False
+
+    compress = 0
+    notakeover = False
+    for ext in _WS_EXT_RE_SPLIT.finditer(extstr):
+        defext = ext.group(1)
+        # Return compress = 15 when get `permessage-deflate`
+        if not defext:
+            compress = 15
+            break
+        match = _WS_EXT_RE.match(defext)
+        if match:
+            compress = 15
+            if isserver:
+                # Server never fail to detect compress handshake.
+                # Server does not need to send max wbit to client
+                if match.group(4):
+                    compress = int(match.group(4))
+                    # Group3 must match if group4 matches
+                    # Compress wbit 8 does not support in zlib
+                    # If compress level not support,
+                    # CONTINUE to next extension
+                    if compress > 15 or compress < 9:
+                        compress = 0
+                        continue
+                if match.group(1):
+                    notakeover = True
+                # Ignore regex group 5 & 6 for client_max_window_bits
+                break
+            else:
+                if match.group(6):
+                    compress = int(match.group(6))
+                    # Group5 must match if group6 matches
+                    # Compress wbit 8 does not support in zlib
+                    # If compress level not support,
+                    # FAIL the parse progress
+                    if compress > 15 or compress < 9:
+                        raise WSHandshakeError("Invalid window size")
+                if match.group(2):
+                    notakeover = True
+                # Ignore regex group 5 & 6 for client_max_window_bits
+                break
+        # Return Fail if client side and not match
+        elif not isserver:
+            raise WSHandshakeError("Extension for deflate not supported" + ext.group(1))
+
+    return compress, notakeover
+
+
+def ws_ext_gen(
+    compress: int = 15, isserver: bool = False, server_notakeover: bool = False
+) -> str:
+    # client_notakeover=False not used for server
+    # compress wbit 8 does not support in zlib
+    if compress < 9 or compress > 15:
+        raise ValueError(
+            "Compress wbits must between 9 and 15, " "zlib does not support wbits=8"
+        )
+    enabledext = ["permessage-deflate"]
+    if not isserver:
+        enabledext.append("client_max_window_bits")
+
+    if compress < 15:
+        enabledext.append("server_max_window_bits=" + str(compress))
+    if server_notakeover:
+        enabledext.append("server_no_context_takeover")
+    # if client_notakeover:
+    #     enabledext.append('client_no_context_takeover')
+    return "; ".join(enabledext)
+
+
+class WSParserState(IntEnum):
+    READ_HEADER = 1
+    READ_PAYLOAD_LENGTH = 2
+    READ_PAYLOAD_MASK = 3
+    READ_PAYLOAD = 4
+
+
+class WebSocketReader:
+    def __init__(
+        self, queue: DataQueue[WSMessage], max_msg_size: int, compress: bool = True
+    ) -> None:
+        self.queue = queue
+        self._max_msg_size = max_msg_size
+
+        self._exc = None  # type: Optional[BaseException]
+        self._partial = bytearray()
+        self._state = WSParserState.READ_HEADER
+
+        self._opcode = None  # type: Optional[int]
+        self._frame_fin = False
+        self._frame_opcode = None  # type: Optional[int]
+        self._frame_payload = bytearray()
+
+        self._tail = b""
+        self._has_mask = False
+        self._frame_mask = None  # type: Optional[bytes]
+        self._payload_length = 0
+        self._payload_length_flag = 0
+        self._compressed = None  # type: Optional[bool]
+        self._decompressobj = None  # type: Any  # zlib.decompressobj actually
+        self._compress = compress
+
+    def feed_eof(self) -> None:
+        self.queue.feed_eof()
+
+    def feed_data(self, data: bytes) -> Tuple[bool, bytes]:
+        if self._exc:
+            return True, data
+
+        try:
+            return self._feed_data(data)
+        except Exception as exc:
+            self._exc = exc
+            self.queue.set_exception(exc)
+            return True, b""
+
+    def _feed_data(self, data: bytes) -> Tuple[bool, bytes]:
+        for fin, opcode, payload, compressed in self.parse_frame(data):
+            if compressed and not self._decompressobj:
+                self._decompressobj = zlib.decompressobj(wbits=-zlib.MAX_WBITS)
+            if opcode == WSMsgType.CLOSE:
+                if len(payload) >= 2:
+                    close_code = UNPACK_CLOSE_CODE(payload[:2])[0]
+                    if close_code < 3000 and close_code not in ALLOWED_CLOSE_CODES:
+                        raise WebSocketError(
+                            WSCloseCode.PROTOCOL_ERROR,
+                            f"Invalid close code: {close_code}",
+                        )
+                    try:
+                        close_message = payload[2:].decode("utf-8")
+                    except UnicodeDecodeError as exc:
+                        raise WebSocketError(
+                            WSCloseCode.INVALID_TEXT, "Invalid UTF-8 text message"
+                        ) from exc
+                    msg = WSMessage(WSMsgType.CLOSE, close_code, close_message)
+                elif payload:
+                    raise WebSocketError(
+                        WSCloseCode.PROTOCOL_ERROR,
+                        f"Invalid close frame: {fin} {opcode} {payload!r}",
+                    )
+                else:
+                    msg = WSMessage(WSMsgType.CLOSE, 0, "")
+
+                self.queue.feed_data(msg, 0)
+
+            elif opcode == WSMsgType.PING:
+                self.queue.feed_data(
+                    WSMessage(WSMsgType.PING, payload, ""), len(payload)
+                )
+
+            elif opcode == WSMsgType.PONG:
+                self.queue.feed_data(
+                    WSMessage(WSMsgType.PONG, payload, ""), len(payload)
+                )
+
+            elif (
+                opcode not in (WSMsgType.TEXT, WSMsgType.BINARY)
+                and self._opcode is None
+            ):
+                raise WebSocketError(
+                    WSCloseCode.PROTOCOL_ERROR, f"Unexpected opcode={opcode!r}"
+                )
+            else:
+                # load text/binary
+                if not fin:
+                    # got partial frame payload
+                    if opcode != WSMsgType.CONTINUATION:
+                        self._opcode = opcode
+                    self._partial.extend(payload)
+                    if self._max_msg_size and len(self._partial) >= self._max_msg_size:
+                        raise WebSocketError(
+                            WSCloseCode.MESSAGE_TOO_BIG,
+                            "Message size {} exceeds limit {}".format(
+                                len(self._partial), self._max_msg_size
+                            ),
+                        )
+                else:
+                    # previous frame was non finished
+                    # we should get continuation opcode
+                    if self._partial:
+                        if opcode != WSMsgType.CONTINUATION:
+                            raise WebSocketError(
+                                WSCloseCode.PROTOCOL_ERROR,
+                                "The opcode in non-fin frame is expected "
+                                "to be zero, got {!r}".format(opcode),
+                            )
+
+                    if opcode == WSMsgType.CONTINUATION:
+                        assert self._opcode is not None
+                        opcode = self._opcode
+                        self._opcode = None
+
+                    self._partial.extend(payload)
+                    if self._max_msg_size and len(self._partial) >= self._max_msg_size:
+                        raise WebSocketError(
+                            WSCloseCode.MESSAGE_TOO_BIG,
+                            "Message size {} exceeds limit {}".format(
+                                len(self._partial), self._max_msg_size
+                            ),
+                        )
+
+                    # Decompress process must to be done after all packets
+                    # received.
+                    if compressed:
+                        self._partial.extend(_WS_DEFLATE_TRAILING)
+                        payload_merged = self._decompressobj.decompress(
+                            self._partial, self._max_msg_size
+                        )
+                        if self._decompressobj.unconsumed_tail:
+                            left = len(self._decompressobj.unconsumed_tail)
+                            raise WebSocketError(
+                                WSCloseCode.MESSAGE_TOO_BIG,
+                                "Decompressed message size {} exceeds limit {}".format(
+                                    self._max_msg_size + left, self._max_msg_size
+                                ),
+                            )
+                    else:
+                        payload_merged = bytes(self._partial)
+
+                    self._partial.clear()
+
+                    if opcode == WSMsgType.TEXT:
+                        try:
+                            text = payload_merged.decode("utf-8")
+                            self.queue.feed_data(
+                                WSMessage(WSMsgType.TEXT, text, ""), len(text)
+                            )
+                        except UnicodeDecodeError as exc:
+                            raise WebSocketError(
+                                WSCloseCode.INVALID_TEXT, "Invalid UTF-8 text message"
+                            ) from exc
+                    else:
+                        self.queue.feed_data(
+                            WSMessage(WSMsgType.BINARY, payload_merged, ""),
+                            len(payload_merged),
+                        )
+
+        return False, b""
+
+    def parse_frame(
+        self, buf: bytes
+    ) -> List[Tuple[bool, Optional[int], bytearray, Optional[bool]]]:
+        """Return the next frame from the socket."""
+        frames = []
+        if self._tail:
+            buf, self._tail = self._tail + buf, b""
+
+        start_pos = 0
+        buf_length = len(buf)
+
+        while True:
+            # read header
+            if self._state == WSParserState.READ_HEADER:
+                if buf_length - start_pos >= 2:
+                    data = buf[start_pos : start_pos + 2]
+                    start_pos += 2
+                    first_byte, second_byte = data
+
+                    fin = (first_byte >> 7) & 1
+                    rsv1 = (first_byte >> 6) & 1
+                    rsv2 = (first_byte >> 5) & 1
+                    rsv3 = (first_byte >> 4) & 1
+                    opcode = first_byte & 0xF
+
+                    # frame-fin = %x0 ; more frames of this message follow
+                    #           / %x1 ; final frame of this message
+                    # frame-rsv1 = %x0 ;
+                    #    1 bit, MUST be 0 unless negotiated otherwise
+                    # frame-rsv2 = %x0 ;
+                    #    1 bit, MUST be 0 unless negotiated otherwise
+                    # frame-rsv3 = %x0 ;
+                    #    1 bit, MUST be 0 unless negotiated otherwise
+                    #
+                    # Remove rsv1 from this test for deflate development
+                    if rsv2 or rsv3 or (rsv1 and not self._compress):
+                        raise WebSocketError(
+                            WSCloseCode.PROTOCOL_ERROR,
+                            "Received frame with non-zero reserved bits",
+                        )
+
+                    if opcode > 0x7 and fin == 0:
+                        raise WebSocketError(
+                            WSCloseCode.PROTOCOL_ERROR,
+                            "Received fragmented control frame",
+                        )
+
+                    has_mask = (second_byte >> 7) & 1
+                    length = second_byte & 0x7F
+
+                    # Control frames MUST have a payload
+                    # length of 125 bytes or less
+                    if opcode > 0x7 and length > 125:
+                        raise WebSocketError(
+                            WSCloseCode.PROTOCOL_ERROR,
+                            "Control frame payload cannot be " "larger than 125 bytes",
+                        )
+
+                    # Set compress status if last package is FIN
+                    # OR set compress status if this is first fragment
+                    # Raise error if not first fragment with rsv1 = 0x1
+                    if self._frame_fin or self._compressed is None:
+                        self._compressed = True if rsv1 else False
+                    elif rsv1:
+                        raise WebSocketError(
+                            WSCloseCode.PROTOCOL_ERROR,
+                            "Received frame with non-zero reserved bits",
+                        )
+
+                    self._frame_fin = bool(fin)
+                    self._frame_opcode = opcode
+                    self._has_mask = bool(has_mask)
+                    self._payload_length_flag = length
+                    self._state = WSParserState.READ_PAYLOAD_LENGTH
+                else:
+                    break
+
+            # read payload length
+            if self._state == WSParserState.READ_PAYLOAD_LENGTH:
+                length = self._payload_length_flag
+                if length == 126:
+                    if buf_length - start_pos >= 2:
+                        data = buf[start_pos : start_pos + 2]
+                        start_pos += 2
+                        length = UNPACK_LEN2(data)[0]
+                        self._payload_length = length
+                        self._state = (
+                            WSParserState.READ_PAYLOAD_MASK
+                            if self._has_mask
+                            else WSParserState.READ_PAYLOAD
+                        )
+                    else:
+                        break
+                elif length > 126:
+                    if buf_length - start_pos >= 8:
+                        data = buf[start_pos : start_pos + 8]
+                        start_pos += 8
+                        length = UNPACK_LEN3(data)[0]
+                        self._payload_length = length
+                        self._state = (
+                            WSParserState.READ_PAYLOAD_MASK
+                            if self._has_mask
+                            else WSParserState.READ_PAYLOAD
+                        )
+                    else:
+                        break
+                else:
+                    self._payload_length = length
+                    self._state = (
+                        WSParserState.READ_PAYLOAD_MASK
+                        if self._has_mask
+                        else WSParserState.READ_PAYLOAD
+                    )
+
+            # read payload mask
+            if self._state == WSParserState.READ_PAYLOAD_MASK:
+                if buf_length - start_pos >= 4:
+                    self._frame_mask = buf[start_pos : start_pos + 4]
+                    start_pos += 4
+                    self._state = WSParserState.READ_PAYLOAD
+                else:
+                    break
+
+            if self._state == WSParserState.READ_PAYLOAD:
+                length = self._payload_length
+                payload = self._frame_payload
+
+                chunk_len = buf_length - start_pos
+                if length >= chunk_len:
+                    self._payload_length = length - chunk_len
+                    payload.extend(buf[start_pos:])
+                    start_pos = buf_length
+                else:
+                    self._payload_length = 0
+                    payload.extend(buf[start_pos : start_pos + length])
+                    start_pos = start_pos + length
+
+                if self._payload_length == 0:
+                    if self._has_mask:
+                        assert self._frame_mask is not None
+                        _websocket_mask(self._frame_mask, payload)
+
+                    frames.append(
+                        (self._frame_fin, self._frame_opcode, payload, self._compressed)
+                    )
+
+                    self._frame_payload = bytearray()
+                    self._state = WSParserState.READ_HEADER
+                else:
+                    break
+
+        self._tail = buf[start_pos:]
+
+        return frames
+
+
+class WebSocketWriter:
+    def __init__(
+        self,
+        protocol: BaseProtocol,
+        transport: asyncio.Transport,
+        *,
+        use_mask: bool = False,
+        limit: int = DEFAULT_LIMIT,
+        random: Any = random.Random(),
+        compress: int = 0,
+        notakeover: bool = False,
+    ) -> None:
+        self.protocol = protocol
+        self.transport = transport
+        self.use_mask = use_mask
+        self.randrange = random.randrange
+        self.compress = compress
+        self.notakeover = notakeover
+        self._closing = False
+        self._limit = limit
+        self._output_size = 0
+        self._compressobj = None  # type: Any  # actually compressobj
+
+    async def _send_frame(
+        self, message: bytes, opcode: int, compress: Optional[int] = None
+    ) -> None:
+        """Send a frame over the websocket with message as its payload."""
+        if self._closing and not (opcode & WSMsgType.CLOSE):
+            raise ConnectionResetError("Cannot write to closing transport")
+
+        rsv = 0
+
+        # Only compress larger packets (disabled)
+        # Does small packet needs to be compressed?
+        # if self.compress and opcode < 8 and len(message) > 124:
+        if (compress or self.compress) and opcode < 8:
+            if compress:
+                # Do not set self._compress if compressing is for this frame
+                compressobj = zlib.compressobj(level=zlib.Z_BEST_SPEED, wbits=-compress)
+            else:  # self.compress
+                if not self._compressobj:
+                    self._compressobj = zlib.compressobj(
+                        level=zlib.Z_BEST_SPEED, wbits=-self.compress
+                    )
+                compressobj = self._compressobj
+
+            message = compressobj.compress(message)
+            message = message + compressobj.flush(
+                zlib.Z_FULL_FLUSH if self.notakeover else zlib.Z_SYNC_FLUSH
+            )
+            if message.endswith(_WS_DEFLATE_TRAILING):
+                message = message[:-4]
+            rsv = rsv | 0x40
+
+        msg_length = len(message)
+
+        use_mask = self.use_mask
+        if use_mask:
+            mask_bit = 0x80
+        else:
+            mask_bit = 0
+
+        if msg_length < 126:
+            header = PACK_LEN1(0x80 | rsv | opcode, msg_length | mask_bit)
+        elif msg_length < (1 << 16):
+            header = PACK_LEN2(0x80 | rsv | opcode, 126 | mask_bit, msg_length)
+        else:
+            header = PACK_LEN3(0x80 | rsv | opcode, 127 | mask_bit, msg_length)
+        if use_mask:
+            mask = self.randrange(0, 0xFFFFFFFF)
+            mask = mask.to_bytes(4, "big")
+            message = bytearray(message)
+            _websocket_mask(mask, message)
+            self._write(header + mask + message)
+            self._output_size += len(header) + len(mask) + len(message)
+        else:
+            if len(message) > MSG_SIZE:
+                self._write(header)
+                self._write(message)
+            else:
+                self._write(header + message)
+
+            self._output_size += len(header) + len(message)
+
+        if self._output_size > self._limit:
+            self._output_size = 0
+            await self.protocol._drain_helper()
+
+    def _write(self, data: bytes) -> None:
+        if self.transport is None or self.transport.is_closing():
+            raise ConnectionResetError("Cannot write to closing transport")
+        self.transport.write(data)
+
+    async def pong(self, message: bytes = b"") -> None:
+        """Send pong message."""
+        if isinstance(message, str):
+            message = message.encode("utf-8")
+        await self._send_frame(message, WSMsgType.PONG)
+
+    async def ping(self, message: bytes = b"") -> None:
+        """Send ping message."""
+        if isinstance(message, str):
+            message = message.encode("utf-8")
+        await self._send_frame(message, WSMsgType.PING)
+
+    async def send(
+        self,
+        message: Union[str, bytes],
+        binary: bool = False,
+        compress: Optional[int] = None,
+    ) -> None:
+        """Send a frame over the websocket with message as its payload."""
+        if isinstance(message, str):
+            message = message.encode("utf-8")
+        if binary:
+            await self._send_frame(message, WSMsgType.BINARY, compress)
+        else:
+            await self._send_frame(message, WSMsgType.TEXT, compress)
+
+    async def close(self, code: int = 1000, message: bytes = b"") -> None:
+        """Close the websocket, sending the specified code and message."""
+        if isinstance(message, str):
+            message = message.encode("utf-8")
+        try:
+            await self._send_frame(
+                PACK_CLOSE_CODE(code) + message, opcode=WSMsgType.CLOSE
+            )
+        finally:
+            self._closing = True

.venv/lib/python3.9/site-packages/aiohttp/http_writer.py

@@ -0,0 +1,182 @@
+"""Http related parsers and protocol."""
+
+import asyncio
+import collections
+import zlib
+from typing import Any, Awaitable, Callable, Optional, Union  # noqa
+
+from multidict import CIMultiDict
+
+from .abc import AbstractStreamWriter
+from .base_protocol import BaseProtocol
+from .helpers import NO_EXTENSIONS
+
+__all__ = ("StreamWriter", "HttpVersion", "HttpVersion10", "HttpVersion11")
+
+HttpVersion = collections.namedtuple("HttpVersion", ["major", "minor"])
+HttpVersion10 = HttpVersion(1, 0)
+HttpVersion11 = HttpVersion(1, 1)
+
+
+_T_OnChunkSent = Optional[Callable[[bytes], Awaitable[None]]]
+
+
+class StreamWriter(AbstractStreamWriter):
+    def __init__(
+        self,
+        protocol: BaseProtocol,
+        loop: asyncio.AbstractEventLoop,
+        on_chunk_sent: _T_OnChunkSent = None,
+    ) -> None:
+        self._protocol = protocol
+        self._transport = protocol.transport
+
+        self.loop = loop
+        self.length = None
+        self.chunked = False
+        self.buffer_size = 0
+        self.output_size = 0
+
+        self._eof = False
+        self._compress = None  # type: Any
+        self._drain_waiter = None
+
+        self._on_chunk_sent = on_chunk_sent  # type: _T_OnChunkSent
+
+    @property
+    def transport(self) -> Optional[asyncio.Transport]:
+        return self._transport
+
+    @property
+    def protocol(self) -> BaseProtocol:
+        return self._protocol
+
+    def enable_chunking(self) -> None:
+        self.chunked = True
+
+    def enable_compression(self, encoding: str = "deflate") -> None:
+        zlib_mode = 16 + zlib.MAX_WBITS if encoding == "gzip" else zlib.MAX_WBITS
+        self._compress = zlib.compressobj(wbits=zlib_mode)
+
+    def _write(self, chunk: bytes) -> None:
+        size = len(chunk)
+        self.buffer_size += size
+        self.output_size += size
+
+        if self._transport is None or self._transport.is_closing():
+            raise ConnectionResetError("Cannot write to closing transport")
+        self._transport.write(chunk)
+
+    async def write(
+        self, chunk: bytes, *, drain: bool = True, LIMIT: int = 0x10000
+    ) -> None:
+        """Writes chunk of data to a stream.
+
+        write_eof() indicates end of stream.
+        writer can't be used after write_eof() method being called.
+        write() return drain future.
+        """
+        if self._on_chunk_sent is not None:
+            await self._on_chunk_sent(chunk)
+
+        if isinstance(chunk, memoryview):
+            if chunk.nbytes != len(chunk):
+                # just reshape it
+                chunk = chunk.cast("c")
+
+        if self._compress is not None:
+            chunk = self._compress.compress(chunk)
+            if not chunk:
+                return
+
+        if self.length is not None:
+            chunk_len = len(chunk)
+            if self.length >= chunk_len:
+                self.length = self.length - chunk_len
+            else:
+                chunk = chunk[: self.length]
+                self.length = 0
+                if not chunk:
+                    return
+
+        if chunk:
+            if self.chunked:
+                chunk_len_pre = ("%x\r\n" % len(chunk)).encode("ascii")
+                chunk = chunk_len_pre + chunk + b"\r\n"
+
+            self._write(chunk)
+
+            if self.buffer_size > LIMIT and drain:
+                self.buffer_size = 0
+                await self.drain()
+
+    async def write_headers(
+        self, status_line: str, headers: "CIMultiDict[str]"
+    ) -> None:
+        """Write request/response status and headers."""
+        # status + headers
+        buf = _serialize_headers(status_line, headers)
+        self._write(buf)
+
+    async def write_eof(self, chunk: bytes = b"") -> None:
+        if self._eof:
+            return
+
+        if chunk and self._on_chunk_sent is not None:
+            await self._on_chunk_sent(chunk)
+
+        if self._compress:
+            if chunk:
+                chunk = self._compress.compress(chunk)
+
+            chunk = chunk + self._compress.flush()
+            if chunk and self.chunked:
+                chunk_len = ("%x\r\n" % len(chunk)).encode("ascii")
+                chunk = chunk_len + chunk + b"\r\n0\r\n\r\n"
+        else:
+            if self.chunked:
+                if chunk:
+                    chunk_len = ("%x\r\n" % len(chunk)).encode("ascii")
+                    chunk = chunk_len + chunk + b"\r\n0\r\n\r\n"
+                else:
+                    chunk = b"0\r\n\r\n"
+
+        if chunk:
+            self._write(chunk)
+
+        await self.drain()
+
+        self._eof = True
+        self._transport = None
+
+    async def drain(self) -> None:
+        """Flush the write buffer.
+
+        The intended use is to write
+
+          await w.write(data)
+          await w.drain()
+        """
+        if self._protocol.transport is not None:
+            await self._protocol._drain_helper()
+
+
+def _py_serialize_headers(status_line: str, headers: "CIMultiDict[str]") -> bytes:
+    line = (
+        status_line
+        + "\r\n"
+        + "".join([k + ": " + v + "\r\n" for k, v in headers.items()])
+    )
+    return line.encode("utf-8") + b"\r\n"
+
+
+_serialize_headers = _py_serialize_headers
+
+try:
+    import aiohttp._http_writer as _http_writer  # type: ignore
+
+    _c_serialize_headers = _http_writer._serialize_headers
+    if not NO_EXTENSIONS:
+        _serialize_headers = _c_serialize_headers
+except ImportError:
+    pass

.venv/lib/python3.9/site-packages/aiohttp/locks.py

@@ -0,0 +1,45 @@
+import asyncio
+import collections
+from typing import Any, Optional
+
+try:
+    from typing import Deque
+except ImportError:
+    from typing_extensions import Deque
+
+
+class EventResultOrError:
+    """
+    This class wrappers the Event asyncio lock allowing either awake the
+    locked Tasks without any error or raising an exception.
+
+    thanks to @vorpalsmith for the simple design.
+    """
+
+    def __init__(self, loop: asyncio.AbstractEventLoop) -> None:
+        self._loop = loop
+        self._exc = None  # type: Optional[BaseException]
+        self._event = asyncio.Event()
+        self._waiters = collections.deque()  # type: Deque[asyncio.Future[Any]]
+
+    def set(self, exc: Optional[BaseException] = None) -> None:
+        self._exc = exc
+        self._event.set()
+
+    async def wait(self) -> Any:
+        waiter = self._loop.create_task(self._event.wait())
+        self._waiters.append(waiter)
+        try:
+            val = await waiter
+        finally:
+            self._waiters.remove(waiter)
+
+        if self._exc is not None:
+            raise self._exc
+
+        return val
+
+    def cancel(self) -> None:
+        """ Cancel all waiters """
+        for waiter in self._waiters:
+            waiter.cancel()