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[WS] Fix set_no_delay on Windows

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Windows socket implementation is, as usual, broken in many ways.

This includes `setsockopt` failing to set `TCP_NODELAY` if the socket is
still in a connecting state.

This also means we need to keep polling the IP resolver until the socket
reaches the CONNECTED state (so it can set the TCP_NODELAY after the
connection is successful).
This commit is contained in:
Fabio Alessandrelli 2024-08-07 09:43:34 +02:00
parent eabeafd8c3
commit 7f610a2c6e
1 changed files with 3 additions and 2 deletions
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5
modules/websocket/wsl_peer.cpp
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@ -99,6 +99,8 @@ void WSLPeer::Resolver::try_next_candidate(Ref<StreamPeerTCP> &p_tcp) {
p_tcp->poll();
StreamPeerTCP::Status status = p_tcp->get_status();
if (status == StreamPeerTCP::STATUS_CONNECTED) {
// On Windows, setting TCP_NODELAY may fail if the socket is still connecting.
p_tcp->set_no_delay(true);
ip_candidates.clear();
return;
} else if (status == StreamPeerTCP::STATUS_CONNECTING) {
@ -112,7 +114,6 @@ void WSLPeer::Resolver::try_next_candidate(Ref<StreamPeerTCP> &p_tcp) {
while (ip_candidates.size()) {
Error err = p_tcp->connect_to_host(ip_candidates.pop_front(), port);
if (err == OK) {
p_tcp->set_no_delay(true);
return;
} else {
p_tcp->disconnect_from_host();
@ -311,7 +312,7 @@ void WSLPeer::_do_client_handshake() {
ERR_FAIL_COND(tcp.is_null());
// Try to connect to candidates.
if (resolver.has_more_candidates()) {
if (resolver.has_more_candidates() || tcp->get_status() == StreamPeerTCP::STATUS_CONNECTING) {
resolver.try_next_candidate(tcp);
if (resolver.has_more_candidates()) {
return; // Still pending.