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Assign peer IDs randomly

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sfan5 2024-01-05 00:43:47 +01:00
parent db88d24ff8
commit 2587302987
3 changed files with 11 additions and 22 deletions
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25
src/network/connection.cpp
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@ -1551,29 +1551,22 @@ u16 Connection::createPeer(Address& sender, MTProtocols protocol, int fd)
{ {
// Somebody wants to make a new connection // Somebody wants to make a new connection
// Get a unique peer id (2 or higher) // Get a unique peer id
session_t peer_id_new = m_next_remote_peer_id; const session_t minimum = 2;
u16 overflow = MAX_UDP_PEERS; const session_t overflow = MAX_UDP_PEERS;
/* /*
Find an unused peer id Find an unused peer id
*/ */
MutexAutoLock lock(m_peers_mutex); MutexAutoLock lock(m_peers_mutex);
bool out_of_ids = false; session_t peer_id_new;
for(;;) { for (int tries = 0; tries < 100; tries++) {
// Check if exists peer_id_new = myrand_range(minimum, overflow - 1);
if (m_peers.find(peer_id_new) == m_peers.end()) if (m_peers.find(peer_id_new) == m_peers.end())
break;
// Check for overflow
if (peer_id_new == overflow) {
out_of_ids = true;
break; break;
} }
peer_id_new++; if (m_peers.find(peer_id_new) != m_peers.end()) {
}
if (out_of_ids) {
errorstream << getDesc() << " ran out of peer ids" << std::endl; errorstream << getDesc() << " ran out of peer ids" << std::endl;
return PEER_ID_INEXISTENT; return PEER_ID_INEXISTENT;
} }
@ -1585,8 +1578,6 @@ u16 Connection::createPeer(Address& sender, MTProtocols protocol, int fd)
m_peers[peer->id] = peer; m_peers[peer->id] = peer;
m_peer_ids.push_back(peer->id); m_peer_ids.push_back(peer->id);
m_next_remote_peer_id = (peer_id_new +1 ) % MAX_UDP_PEERS;
LOG(dout_con << getDesc() LOG(dout_con << getDesc()
<< "createPeer(): giving peer_id=" << peer_id_new << std::endl); << "createPeer(): giving peer_id=" << peer_id_new << std::endl);

2
src/network/connection.h
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@ -793,8 +793,6 @@ private:
u32 m_bc_receive_timeout = 0; u32 m_bc_receive_timeout = 0;
bool m_shutting_down = false; bool m_shutting_down = false;
session_t m_next_remote_peer_id = 2;
}; };
} // namespace } // namespace

6
src/unittest/test_connection.cpp
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@ -245,7 +245,7 @@ void TestConnection::testConnectSendReceive()
UASSERT(hand_client.last_id == 1); UASSERT(hand_client.last_id == 1);
// Server should have the client // Server should have the client
UASSERT(hand_server.count == 1); UASSERT(hand_server.count == 1);
UASSERT(hand_server.last_id == 2); UASSERT(hand_server.last_id >= 2);
//sleep_ms(50); //sleep_ms(50);
@ -300,7 +300,7 @@ void TestConnection::testConnectSendReceive()
UASSERT(memcmp(*sentdata, *recvdata, recvdata.getSize()) == 0); UASSERT(memcmp(*sentdata, *recvdata, recvdata.getSize()) == 0);
} }
session_t peer_id_client = 2; const session_t peer_id_client = hand_server.last_id;
/* /*
Send a large packet Send a large packet
*/ */
@ -374,5 +374,5 @@ void TestConnection::testConnectSendReceive()
UASSERT(hand_client.count == 1); UASSERT(hand_client.count == 1);
UASSERT(hand_client.last_id == 1); UASSERT(hand_client.last_id == 1);
UASSERT(hand_server.count == 1); UASSERT(hand_server.count == 1);
UASSERT(hand_server.last_id == 2); UASSERT(hand_server.last_id >= 2);
} }