Add support for IPv6

Two new configuration options are added:
     - "enable_ipv6" to enable/disable the overall use of IPv6
     - "ipv6_server" to enable/disable the use of IPv6 sockets when running
       a server (when "enable_ipv6" is enabled)
This commit is contained in:
proller 2013-06-23 11:31:22 +04:00
parent 309c5f3641
commit f960c3be31
16 changed files with 475 additions and 209 deletions

@ -367,3 +367,9 @@
# Float islands starts from height, 0 to disable
#mgindev_float_islands = 500
# Enable/disable IPv6
#enable_ipv6 = true
# Enable/disable running an IPv6 server. An IPv6 server may be restricted
# to IPv6 clients, depending on system configuration.
#ipv6_server = false

@ -271,7 +271,8 @@ Client::Client(
IWritableItemDefManager *itemdef,
IWritableNodeDefManager *nodedef,
ISoundManager *sound,
MtEventManager *event
MtEventManager *event,
bool ipv6
):
m_tsrc(tsrc),
m_shsrc(shsrc),
@ -287,7 +288,7 @@ Client::Client(
device->getSceneManager(),
tsrc, this, device
),
m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, ipv6, this),
m_device(device),
m_server_ser_ver(SER_FMT_VER_INVALID),
m_playeritem(0),

@ -263,7 +263,8 @@ public:
IWritableItemDefManager *itemdef,
IWritableNodeDefManager *nodedef,
ISoundManager *sound,
MtEventManager *event
MtEventManager *event,
bool ipv6
);
~Client();

@ -520,10 +520,12 @@ void Peer::reportRTT(float rtt)
Connection
*/
Connection::Connection(u32 protocol_id, u32 max_packet_size, float timeout):
Connection::Connection(u32 protocol_id, u32 max_packet_size, float timeout,
bool ipv6):
m_protocol_id(protocol_id),
m_max_packet_size(max_packet_size),
m_timeout(timeout),
m_socket(ipv6),
m_peer_id(0),
m_bc_peerhandler(NULL),
m_bc_receive_timeout(0),
@ -535,10 +537,11 @@ Connection::Connection(u32 protocol_id, u32 max_packet_size, float timeout):
}
Connection::Connection(u32 protocol_id, u32 max_packet_size, float timeout,
PeerHandler *peerhandler):
bool ipv6, PeerHandler *peerhandler):
m_protocol_id(protocol_id),
m_max_packet_size(max_packet_size),
m_timeout(timeout),
m_socket(ipv6),
m_peer_id(0),
m_bc_peerhandler(peerhandler),
m_bc_receive_timeout(0),

@ -548,8 +548,8 @@ struct ConnectionCommand
class Connection: public SimpleThread
{
public:
Connection(u32 protocol_id, u32 max_packet_size, float timeout);
Connection(u32 protocol_id, u32 max_packet_size, float timeout,
Connection(u32 protocol_id, u32 max_packet_size, float timeout, bool ipv6);
Connection(u32 protocol_id, u32 max_packet_size, float timeout, bool ipv6,
PeerHandler *peerhandler);
~Connection();
void * Thread();

@ -36,6 +36,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
// Causes the socket class to deliberately drop random packets.
// This disables unit testing of socket and connection.
#define INTERNET_SIMULATOR 0
#define INTERNET_SIMULATOR_PACKET_LOSS 10 // 10 = easy, 4 = hard
#define CONNECTION_TIMEOUT 30

@ -34,7 +34,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0500
#define _WIN32_WINNT 0x0501
#endif
#include <windows.h>
#ifdef _MSC_VER

@ -251,6 +251,10 @@ void set_default_settings(Settings *settings)
settings->setDefault("mgindev_np_float_islands3", "0, 1, (256, 256, 256), 6412, 2, 0.5, 1, 0.5");
settings->setDefault("mgindev_np_biome", "0, 1, (250, 250, 250), 9130, 3, 0.50, 1, 10");
settings->setDefault("mgindev_float_islands", "500");
// IPv6
settings->setDefault("enable_ipv6", "true");
settings->setDefault("ipv6_server", "false");
}
void override_default_settings(Settings *settings, Settings *from)

@ -1039,12 +1039,6 @@ void the_game(
infostream<<"Creating client"<<std::endl;
MapDrawControl draw_control;
Client client(device, playername.c_str(), password, draw_control,
tsrc, shsrc, itemdef, nodedef, sound, &eventmgr);
// Client acts as our GameDef
IGameDef *gamedef = &client;
{
wchar_t* text = wgettext("Resolving address...");
@ -1054,18 +1048,39 @@ void the_game(
Address connect_address(0,0,0,0, port);
try{
if(address == "")
{
//connect_address.Resolve("localhost");
connect_address.setAddress(127,0,0,1);
if(g_settings->getBool("enable_ipv6") && g_settings->getBool("ipv6_server"))
{
IPv6AddressBytes addr_bytes;
addr_bytes.bytes[15] = 1;
connect_address.setAddress(&addr_bytes);
}
else
{
connect_address.setAddress(127,0,0,1);
}
}
else
connect_address.Resolve(address.c_str());
}
catch(ResolveError &e)
{
error_message = L"Couldn't resolve address";
error_message = L"Couldn't resolve address: " + narrow_to_wide(e.what());
errorstream<<wide_to_narrow(error_message)<<std::endl;
// Break out of client scope
break;
}
/*
Create client
*/
Client client(device, playername.c_str(), password, draw_control,
tsrc, shsrc, itemdef, nodedef, sound, &eventmgr,
connect_address.isIPv6());
// Client acts as our GameDef
IGameDef *gamedef = &client;
/*
Attempt to connect to the server

@ -14,6 +14,9 @@
#if defined(_WIN32)
#define WIN32_LEAN_AND_MEAN
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0501
#endif
#include <windows.h>
#endif

@ -31,7 +31,7 @@
#if (defined(WIN32) || defined(_WIN32_WCE))
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0500
#define _WIN32_WINNT 0x0501
#endif
#ifndef _WIN32_WCE
#include <process.h>

@ -42,7 +42,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#ifdef _WIN32
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0500
#define _WIN32_WINNT 0x0501
#endif
#include <windows.h>
@ -153,6 +153,9 @@ bool threadSetPriority(threadid_t tid, int prio);
Overflow can occur at any value higher than 10000000.
*/
#ifdef _WIN32 // Windows
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0501
#endif
#include <windows.h>
inline u32 getTimeS()

@ -639,7 +639,8 @@ Server::Server(
m_simple_singleplayer_mode(simple_singleplayer_mode),
m_async_fatal_error(""),
m_env(NULL),
m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT,
g_settings->getBool("enable_ipv6") && g_settings->getBool("ipv6_server"), this),
m_banmanager(path_world+DIR_DELIM+"ipban.txt"),
m_rollback(NULL),
m_rollback_sink_enabled(true),

@ -20,7 +20,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "socket.h"
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
// Without this some of the network functions are not found on mingw
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0501
@ -46,27 +48,30 @@ typedef int socket_t;
#include "constants.h"
#include "debug.h"
#include "settings.h"
#include "main.h" // for g_settings
#include <stdio.h>
#include <iostream>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sstream>
#include "util/string.h"
#include "util/numeric.h"
// Set to true to enable verbose debug output
bool socket_enable_debug_output = false;
#define DP socket_enable_debug_output
// This is prepended to everything printed here
#define DPS ""
bool g_sockets_initialized = false;
// Initialize sockets
void sockets_init()
{
#ifdef _WIN32
// Windows needs sockets to be initialized before use
WSADATA WsaData;
if(WSAStartup( MAKEWORD(2,2), &WsaData ) != NO_ERROR)
throw SocketException("WSAStartup failed");
#else
#endif
g_sockets_initialized = true;
}
@ -74,34 +79,57 @@ void sockets_init()
void sockets_cleanup()
{
#ifdef _WIN32
// On Windows, cleanup sockets after use
WSACleanup();
#endif
}
/*
Address
*/
Address::Address()
{
m_address = 0;
m_addr_family = 0;
memset(&m_address, 0, sizeof m_address);
m_port = 0;
}
Address::Address(unsigned int address, unsigned short port)
Address::Address(u32 address, u16 port)
{
m_address = address;
m_port = port;
setAddress(address);
setPort(port);
}
Address::Address(unsigned int a, unsigned int b,
unsigned int c, unsigned int d,
unsigned short port)
Address::Address(u8 a, u8 b, u8 c, u8 d, u16 port)
{
m_address = (a<<24) | (b<<16) | ( c<<8) | d;
m_port = port;
setAddress(a, b, c, d);
setPort(port);
}
Address::Address(const IPv6AddressBytes * ipv6_bytes, u16 port)
{
setAddress(ipv6_bytes);
setPort(port);
}
// Equality (address family, address and port must be equal)
bool Address::operator==(Address &address)
{
return (m_address == address.m_address
&& m_port == address.m_port);
if(address.m_addr_family != m_addr_family || address.m_port != m_port)
return false;
else if(m_addr_family == AF_INET)
{
return m_address.ipv4.sin_addr.s_addr ==
address.m_address.ipv4.sin_addr.s_addr;
}
else if(m_addr_family == AF_INET6)
{
return memcmp(m_address.ipv6.sin6_addr.s6_addr,
address.m_address.ipv6.sin6_addr.s6_addr, 16) == 0;
}
else
return false;
}
bool Address::operator!=(Address &address)
@ -111,105 +139,183 @@ bool Address::operator!=(Address &address)
void Address::Resolve(const char *name)
{
struct addrinfo *resolved;
int e = getaddrinfo(name, NULL, NULL, &resolved);
struct addrinfo *resolved, hints;
memset(&hints, 0, sizeof(hints));
// Setup hints
hints.ai_socktype = 0;
hints.ai_protocol = 0;
hints.ai_flags = 0;
if(g_settings->getBool("enable_ipv6"))
{
// AF_UNSPEC allows both IPv6 and IPv4 addresses to be returned
hints.ai_family = AF_UNSPEC;
}
else
{
hints.ai_family = AF_INET;
}
// Do getaddrinfo()
int e = getaddrinfo(name, NULL, &hints, &resolved);
if(e != 0)
throw ResolveError(gai_strerror(e));
// Copy data
if(resolved->ai_family == AF_INET)
{
struct sockaddr_in *t = (struct sockaddr_in *) resolved->ai_addr;
m_addr_family = AF_INET;
m_address.ipv4 = *t;
}
else if(resolved->ai_family == AF_INET6)
{
struct sockaddr_in6 *t = (struct sockaddr_in6 *) resolved->ai_addr;
m_addr_family = AF_INET6;
m_address.ipv6 = *t;
}
else
{
freeaddrinfo(resolved);
throw ResolveError("");
/*
FIXME: This is an ugly hack; change the whole class
to store the address as sockaddr
*/
struct sockaddr_in *t = (struct sockaddr_in*)resolved->ai_addr;
m_address = ntohl(t->sin_addr.s_addr);
}
freeaddrinfo(resolved);
}
// IP address -> textual representation
std::string Address::serializeString() const
{
unsigned int a, b, c, d;
a = (m_address & 0xFF000000)>>24;
b = (m_address & 0x00FF0000)>>16;
c = (m_address & 0x0000FF00)>>8;
d = (m_address & 0x000000FF);
return itos(a)+"."+itos(b)+"."+itos(c)+"."+itos(d);
if(m_addr_family == AF_INET)
{
u8 a, b, c, d, addr;
addr = ntohl(m_address.ipv4.sin_addr.s_addr);
a = (addr & 0xFF000000) >> 24;
b = (addr & 0x00FF0000) >> 16;
c = (addr & 0x0000FF00) >> 8;
d = (addr & 0x000000FF);
return itos(a) + "." + itos(b) + "." + itos(c) + "." + itos(d);
}
else if(m_addr_family == AF_INET6)
{
std::ostringstream os;
for(int i = 0; i < 16; i += 2)
{
u16 section =
(m_address.ipv6.sin6_addr.s6_addr[i] << 8) |
(m_address.ipv6.sin6_addr.s6_addr[i + 1]);
os << std::hex << section;
if(i < 14)
os << ":";
}
return os.str();
}
else
return std::string("");
}
unsigned int Address::getAddress() const
struct sockaddr_in Address::getAddress() const
{
return m_address;
return m_address.ipv4; // NOTE: NO PORT INCLUDED, use getPort()
}
unsigned short Address::getPort() const
struct sockaddr_in6 Address::getAddress6() const
{
return m_address.ipv6; // NOTE: NO PORT INCLUDED, use getPort()
}
u16 Address::getPort() const
{
return m_port;
}
void Address::setAddress(unsigned int address)
int Address::getFamily() const
{
m_address = address;
return m_addr_family;
}
void Address::setAddress(unsigned int a, unsigned int b,
unsigned int c, unsigned int d)
bool Address::isIPv6() const
{
m_address = (a<<24) | (b<<16) | ( c<<8) | d;
return m_addr_family == AF_INET6;
}
void Address::setPort(unsigned short port)
void Address::setAddress(u32 address)
{
m_addr_family = AF_INET;
m_address.ipv4.sin_family = AF_INET;
m_address.ipv4.sin_addr.s_addr = htonl(address);
}
void Address::setAddress(u8 a, u8 b, u8 c, u8 d)
{
m_addr_family = AF_INET;
m_address.ipv4.sin_family = AF_INET;
u32 addr = htonl((a << 24) | (b << 16) | (c << 8) | d);
m_address.ipv4.sin_addr.s_addr = addr;
}
void Address::setAddress(const IPv6AddressBytes * ipv6_bytes)
{
m_addr_family = AF_INET6;
m_address.ipv6.sin6_family = AF_INET6;
if(ipv6_bytes)
memcpy(m_address.ipv6.sin6_addr.s6_addr, ipv6_bytes->bytes, 16);
else
memset(m_address.ipv6.sin6_addr.s6_addr, 0, 16);
}
void Address::setPort(u16 port)
{
m_port = port;
}
void Address::print(std::ostream *s) const
{
(*s)<<((m_address>>24)&0xff)<<"."
<<((m_address>>16)&0xff)<<"."
<<((m_address>>8)&0xff)<<"."
<<((m_address>>0)&0xff)<<":"
<<m_port;
if(m_addr_family == AF_INET6)
{
(*s) << "[" << serializeString() << "]:" << m_port;
}
else
{
(*s) << serializeString() << ":" << m_port;
}
}
void Address::print() const
{
print(&dstream);
}
/*
UDPSocket
*/
UDPSocket::UDPSocket()
UDPSocket::UDPSocket(bool ipv6)
{
if(g_sockets_initialized == false)
throw SocketException("Sockets not initialized");
m_handle = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(DP)
dstream<<DPS<<"UDPSocket("<<(int)m_handle<<")::UDPSocket()"<<std::endl;
if(m_handle <= 0)
{
throw SocketException("Failed to create socket");
}
/*#ifdef _WIN32
DWORD nonblocking = 0;
if(ioctlsocket(m_handle, FIONBIO, &nonblocking) != 0)
// Use IPv6 if specified
m_addr_family = ipv6 ? AF_INET6 : AF_INET;
m_handle = socket(m_addr_family, SOCK_DGRAM, IPPROTO_UDP);
if(socket_enable_debug_output)
{
throw SocketException("Failed set non-blocking mode");
dstream << "UDPSocket(" << (int) m_handle
<< ")::UDPSocket(): ipv6 = "
<< (ipv6 ? "true" : "false")
<< std::endl;
}
#else
int nonblocking = 0;
if(fcntl(m_handle, F_SETFL, O_NONBLOCK, nonblocking) == -1)
if(m_handle <= 0)
{
throw SocketException("Failed set non-blocking mode");
throw SocketException("Failed to create socket");
}
#endif*/
setTimeoutMs(0);
}
UDPSocket::~UDPSocket()
{
if(DP)
dstream<<DPS<<"UDPSocket("<<(int)m_handle<<")::~UDPSocket()"<<std::endl;
if(socket_enable_debug_output)
{
dstream << "UDPSocket( " << (int) m_handle << ")::~UDPSocket()"
<< std::endl;
}
#ifdef _WIN32
closesocket(m_handle);
@ -218,111 +324,175 @@ UDPSocket::~UDPSocket()
#endif
}
void UDPSocket::Bind(unsigned short port)
void UDPSocket::Bind(u16 port)
{
if(DP)
dstream<<DPS<<"UDPSocket("<<(int)m_handle
<<")::Bind(): port="<<port<<std::endl;
if(socket_enable_debug_output)
{
dstream << "UDPSocket(" << (int) m_handle << ")::Bind(): "
<< "port=" << port << std::endl;
}
sockaddr_in address;
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons(port);
if(m_addr_family == AF_INET6)
{
struct sockaddr_in6 address;
address.sin6_family = AF_INET6;
address.sin6_addr = in6addr_any;
address.sin6_port = htons(port);
if(bind(m_handle, (const sockaddr*)&address, sizeof(sockaddr_in)) < 0)
{
#ifndef DISABLE_ERRNO
dstream<<(int)m_handle<<": Bind failed: "<<strerror(errno)<<std::endl;
#endif
throw SocketException("Failed to bind socket");
}
if(bind(m_handle, (const struct sockaddr *) &address,
sizeof(struct sockaddr_in6)) < 0)
{
dstream << (int) m_handle << ": Bind failed: "
<< strerror(errno) << std::endl;
throw SocketException("Failed to bind socket");
}
}
else
{
struct sockaddr_in address;
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons(port);
if(bind(m_handle, (const struct sockaddr *) &address,
sizeof(struct sockaddr_in)) < 0)
{
dstream << (int) m_handle << ": Bind failed: "
<< strerror(errno) << std::endl;
throw SocketException("Failed to bind socket");
}
}
}
void UDPSocket::Send(const Address & destination, const void * data, int size)
{
bool dumping_packet = false;
if(INTERNET_SIMULATOR)
dumping_packet = (myrand()%10==0); //easy
//dumping_packet = (myrand()%4==0); // hard
bool dumping_packet = false; // for INTERNET_SIMULATOR
if(DP){
/*dstream<<DPS<<"UDPSocket("<<(int)m_handle
<<")::Send(): destination=";*/
dstream<<DPS;
dstream<<(int)m_handle<<" -> ";
destination.print();
dstream<<", size="<<size<<", data=";
for(int i=0; i<size && i<20; i++){
if(i%2==0) DEBUGPRINT(" ");
unsigned int a = ((const unsigned char*)data)[i];
if(INTERNET_SIMULATOR)
dumping_packet = (myrand() % INTERNET_SIMULATOR_PACKET_LOSS == 0);
if(socket_enable_debug_output)
{
// Print packet destination and size
dstream << (int) m_handle << " -> ";
destination.print(&dstream);
dstream << ", size=" << size;
// Print packet contents
dstream << ", data=";
for(int i = 0; i < size && i < 20; i++)
{
if(i % 2 == 0)
DEBUGPRINT(" ");
unsigned int a = ((const unsigned char *) data)[i];
DEBUGPRINT("%.2X", a);
}
if(size>20)
dstream<<"...";
if(size > 20)
dstream << "...";
if(dumping_packet)
dstream<<" (DUMPED BY INTERNET_SIMULATOR)";
dstream<<std::endl;
}
else if(dumping_packet)
{
// Lol let's forget it
dstream<<"UDPSocket::Send(): "
"INTERNET_SIMULATOR: dumping packet."
<<std::endl;
dstream << " (DUMPED BY INTERNET_SIMULATOR)";
dstream << std::endl;
}
if(dumping_packet)
{
// Lol let's forget it
dstream << "UDPSocket::Send(): "
"INTERNET_SIMULATOR: dumping packet."
<< std::endl;
return;
}
sockaddr_in address;
address.sin_family = AF_INET;
address.sin_addr.s_addr = htonl(destination.getAddress());
address.sin_port = htons(destination.getPort());
if(destination.getFamily() != m_addr_family)
throw SendFailedException("Address family mismatch");
int sent = sendto(m_handle, (const char*)data, size,
0, (sockaddr*)&address, sizeof(sockaddr_in));
int sent;
if(m_addr_family == AF_INET6)
{
struct sockaddr_in6 address = destination.getAddress6();
address.sin6_port = htons(destination.getPort());
sent = sendto(m_handle, (const char *) data, size,
0, (struct sockaddr *) &address, sizeof(struct sockaddr_in6));
}
else
{
struct sockaddr_in address = destination.getAddress();
address.sin_port = htons(destination.getPort());
sent = sendto(m_handle, (const char *) data, size,
0, (struct sockaddr *) &address, sizeof(struct sockaddr_in));
}
if(sent != size)
{
if(sent != size)
{
throw SendFailedException("Failed to send packet");
}
}
}
int UDPSocket::Receive(Address & sender, void * data, int size)
{
// Return on timeout
if(WaitData(m_timeout_ms) == false)
{
return -1;
}
sockaddr_in address;
socklen_t address_len = sizeof(address);
int received;
if(m_addr_family == AF_INET6)
{
struct sockaddr_in6 address;
socklen_t address_len = sizeof(address);
int received = recvfrom(m_handle, (char*)data,
size, 0, (sockaddr*)&address, &address_len);
received = recvfrom(m_handle, (char *) data,
size, 0, (struct sockaddr *) &address, &address_len);
if(received < 0)
return -1;
if(received < 0)
return -1;
unsigned int address_ip = ntohl(address.sin_addr.s_addr);
unsigned int address_port = ntohs(address.sin_port);
u16 address_port = ntohs(address.sin6_port);
IPv6AddressBytes bytes;
memcpy(bytes.bytes, address.sin6_addr.s6_addr, 16);
sender = Address(&bytes, address_port);
}
else
{
struct sockaddr_in address;
socklen_t address_len = sizeof(address);
sender = Address(address_ip, address_port);
received = recvfrom(m_handle, (char *) data,
size, 0, (struct sockaddr *) &address, &address_len);
if(DP){
//dstream<<DPS<<"UDPSocket("<<(int)m_handle<<")::Receive(): sender=";
dstream<<DPS<<(int)m_handle<<" <- ";
sender.print();
//dstream<<", received="<<received<<std::endl;
dstream<<", size="<<received<<", data=";
for(int i=0; i<received && i<20; i++){
if(i%2==0) DEBUGPRINT(" ");
unsigned int a = ((const unsigned char*)data)[i];
if(received < 0)
return -1;
u32 address_ip = ntohl(address.sin_addr.s_addr);
u16 address_port = ntohs(address.sin_port);
sender = Address(address_ip, address_port);
}
if(socket_enable_debug_output)
{
// Print packet sender and size
dstream << (int) m_handle << " <- ";
sender.print(&dstream);
dstream << ", size=" << received;
// Print packet contents
dstream << ", data=";
for(int i = 0; i < received && i < 20; i++)
{
if(i % 2 == 0)
DEBUGPRINT(" ");
unsigned int a = ((const unsigned char *) data)[i];
DEBUGPRINT("%.2X", a);
}
if(received>20)
dstream<<"...";
dstream<<std::endl;
if(received > 20)
dstream << "...";
dstream << std::endl;
}
return received;
@ -351,42 +521,39 @@ bool UDPSocket::WaitData(int timeout_ms)
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = timeout_ms * 1000;
// select()
result = select(m_handle+1, &readset, NULL, NULL, &tv);
if(result == 0){
// Timeout
/*dstream<<"Select timed out (timeout_ms="
<<timeout_ms<<")"<<std::endl;*/
if(result == 0)
return false;
}
else if(result < 0 && errno == EINTR){
else if(result < 0 && errno == EINTR)
return false;
}
else if(result < 0){
// Error
#ifndef DISABLE_ERRNO
dstream<<(int)m_handle<<": Select failed: "<<strerror(errno)<<std::endl;
#endif
else if(result < 0)
{
dstream << (int) m_handle << ": Select failed: "
<< strerror(errno) << std::endl;
#ifdef _WIN32
int e = WSAGetLastError();
dstream<<(int)m_handle<<": WSAGetLastError()="<<e<<std::endl;
if(e == 10004 /*=WSAEINTR*/)
dstream << (int) m_handle << ": WSAGetLastError()="
<< e << std::endl;
if(e == 10004 /* = WSAEINTR */)
{
dstream<<"WARNING: Ignoring WSAEINTR."<<std::endl;
dstream << "WARNING: Ignoring WSAEINTR." << std::endl;
return false;
}
#endif
throw SocketException("Select failed");
}
else if(FD_ISSET(m_handle, &readset) == false){
else if(FD_ISSET(m_handle, &readset) == false)
{
// No data
//dstream<<"Select reported no data in m_handle"<<std::endl;
return false;
}
// There is data
//dstream<<"Select reported data in m_handle"<<std::endl;
return true;
}

@ -20,7 +20,24 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#ifndef SOCKET_HEADER
#define SOCKET_HEADER
#ifdef _WIN32
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0501
#endif
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#include <ostream>
#include <string.h>
#include "irrlichttypes.h"
#include "exceptions.h"
extern bool socket_enable_debug_output;
@ -55,35 +72,48 @@ public:
void sockets_init();
void sockets_cleanup();
class IPv6AddressBytes
{
public:
u8 bytes[16];
IPv6AddressBytes() { memset(bytes, 0, 16); }
};
class Address
{
public:
Address();
Address(unsigned int address, unsigned short port);
Address(unsigned int a, unsigned int b,
unsigned int c, unsigned int d,
unsigned short port);
Address(u32 address, u16 port);
Address(u8 a, u8 b, u8 c, u8 d, u16 port);
Address(const IPv6AddressBytes * ipv6_bytes, u16 port);
bool operator==(Address &address);
bool operator!=(Address &address);
void Resolve(const char *name);
unsigned int getAddress() const;
struct sockaddr_in getAddress() const;
unsigned short getPort() const;
void setAddress(unsigned int address);
void setAddress(unsigned int a, unsigned int b,
unsigned int c, unsigned int d);
void setAddress(u32 address);
void setAddress(u8 a, u8 b, u8 c, u8 d);
void setAddress(const IPv6AddressBytes * ipv6_bytes);
struct sockaddr_in6 getAddress6() const;
int getFamily() const;
bool isIPv6() const;
void setPort(unsigned short port);
void print(std::ostream *s) const;
void print() const;
std::string serializeString() const;
private:
unsigned int m_address;
unsigned short m_port;
unsigned int m_addr_family;
union
{
struct sockaddr_in ipv4;
struct sockaddr_in6 ipv6;
} m_address;
u16 m_port; // Port is separate from sockaddr structures
};
class UDPSocket
{
public:
UDPSocket();
UDPSocket(bool ipv6);
~UDPSocket();
void Bind(unsigned short port);
//void Close();
@ -98,6 +128,7 @@ public:
private:
int m_handle;
int m_timeout_ms;
int m_addr_family;
};
#endif

@ -1293,26 +1293,56 @@ struct TestSocket: public TestBase
void Run()
{
const int port = 30003;
UDPSocket socket;
socket.Bind(port);
const char sendbuffer[] = "hello world!";
socket.Send(Address(127,0,0,1,port), sendbuffer, sizeof(sendbuffer));
sleep_ms(50);
char rcvbuffer[256];
memset(rcvbuffer, 0, sizeof(rcvbuffer));
Address sender;
for(;;)
// IPv6 socket test
{
int bytes_read = socket.Receive(sender, rcvbuffer, sizeof(rcvbuffer));
if(bytes_read < 0)
break;
UDPSocket socket6(true);
socket6.Bind(port);
const char sendbuffer[] = "hello world!";
IPv6AddressBytes bytes;
bytes.bytes[15] = 1;
socket6.Send(Address(&bytes, port), sendbuffer, sizeof(sendbuffer));
sleep_ms(50);
char rcvbuffer[256];
memset(rcvbuffer, 0, sizeof(rcvbuffer));
Address sender;
for(;;)
{
int bytes_read = socket6.Receive(sender, rcvbuffer, sizeof(rcvbuffer));
if(bytes_read < 0)
break;
}
//FIXME: This fails on some systems
UASSERT(strncmp(sendbuffer, rcvbuffer, sizeof(sendbuffer))==0);
UASSERT(memcmp(sender.getAddress6().sin6_addr.s6_addr, Address(&bytes, 0).getAddress6().sin6_addr.s6_addr, 16) == 0);
}
// IPv4 socket test
{
UDPSocket socket(false);
socket.Bind(port);
const char sendbuffer[] = "hello world!";
socket.Send(Address(127,0,0,1,port), sendbuffer, sizeof(sendbuffer));
sleep_ms(50);
char rcvbuffer[256];
memset(rcvbuffer, 0, sizeof(rcvbuffer));
Address sender;
for(;;)
{
int bytes_read = socket.Receive(sender, rcvbuffer, sizeof(rcvbuffer));
if(bytes_read < 0)
break;
}
//FIXME: This fails on some systems
UASSERT(strncmp(sendbuffer, rcvbuffer, sizeof(sendbuffer))==0);
UASSERT(sender.getAddress().sin_addr.s_addr == Address(127,0,0,1, 0).getAddress().sin_addr.s_addr);
}
//FIXME: This fails on some systems
UASSERT(strncmp(sendbuffer, rcvbuffer, sizeof(sendbuffer))==0);
UASSERT(sender.getAddress() == Address(127,0,0,1, 0).getAddress());
}
};
@ -1412,12 +1442,12 @@ struct TestConnection: public TestBase
Handler hand_client("client");
infostream<<"** Creating server Connection"<<std::endl;
con::Connection server(proto_id, 512, 5.0, &hand_server);
con::Connection server(proto_id, 512, 5.0, false, &hand_server);
server.Serve(30001);
infostream<<"** Creating client Connection"<<std::endl;
con::Connection client(proto_id, 512, 5.0, &hand_client);
con::Connection client(proto_id, 512, 5.0, false, &hand_client);
UASSERT(hand_server.count == 0);
UASSERT(hand_client.count == 0);