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Assign peer IDs randomly

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This commit is contained in:
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
// Get a unique peer id (2 or higher)
session_t peer_id_new = m_next_remote_peer_id;
u16 overflow = MAX_UDP_PEERS;
// Get a unique peer id
const session_t minimum = 2;
const session_t overflow = MAX_UDP_PEERS;
/*
Find an unused peer id
*/
MutexAutoLock lock(m_peers_mutex);
bool out_of_ids = false;
for(;;) {
// Check if exists
session_t peer_id_new;
for (int tries = 0; tries < 100; tries++) {
peer_id_new = myrand_range(minimum, overflow - 1);
if (m_peers.find(peer_id_new) == m_peers.end())
break;
// Check for overflow
if (peer_id_new == overflow) {
out_of_ids = true;
break;
}
peer_id_new++;
}
if (out_of_ids) {
if (m_peers.find(peer_id_new) != m_peers.end()) {
errorstream << getDesc() << " ran out of peer ids" << std::endl;
return PEER_ID_INEXISTENT;
}
@ -1585,8 +1578,6 @@ u16 Connection::createPeer(Address& sender, MTProtocols protocol, int fd)
m_peers[peer->id] = peer;
m_peer_ids.push_back(peer->id);
m_next_remote_peer_id = (peer_id_new +1 ) % MAX_UDP_PEERS;
LOG(dout_con << getDesc()
<< "createPeer(): giving peer_id=" << peer_id_new << std::endl);