fanyang 4c7c3d7672 fix: add loopback to connector bind addresses for localhost connections ...

set_bind_addr_for_peer_connector collected all local interface IPs
as bind addresses but omitted 127.0.0.1. When connecting to localhost,
the connector would bind to a non-loopback IP (e.g. 172.17.0.2 in
Docker) and fail with connect timeout because routing from non-loopback
to loopback doesn't work.

Fix: prepend 127.0.0.1:0 to the bind address list. The connector tries
all bind addresses, so loopback will be attempted first and succeed for
localhost connections.

Benchmark results in Docker (4 threads, 1400B, 10s):
  Ring: 508K pps, MpscTunnelSender::send 138ns
  UDP:  440K pps, MpscTunnelSender::send 294ns
  TCP:  440K pps, MpscTunnelSender::send 376ns

All three tunnel types now converge and benefit from noop_waker sync send.

2026-06-28 22:40:52 +08:00

..

setup-bench-netns.sh

fix: add loopback to connector bind addresses for localhost connections

2026-06-28 22:40:52 +08:00