ginuerzh c45d27113e fix(dialer): evict dead SSHD sessions before reuse to prevent channel-open failure (#382) ...

When an SSH session behind an SSHD dialer dies silently (NAT timeout,
server disconnect, idle TCP drop), IsClosed() may still return false
because the health-check goroutine hasn't detected the failure yet.
Returning this dead cached session to the connector causes:

  ssh: unexpected packet in response to channel open:

Add a Ping(req)-based liveness check before returning a cached session.
If the ping fails, evict the session so the next Dial rebuilds a fresh
connection. This matches the dead-session eviction pattern already used
by the SSH, KCP, QUIC, and ICMP dialers.

Also export the ping-as-health-check as Session.Ping(timeout) so it can
be used by external health probes. Retain the existing ping() helper
unmodified.

2026-06-21 13:02:10 +08:00

..

dialer.go

fix(dialer): evict dead SSHD sessions before reuse to prevent channel-open failure (#382)

2026-06-21 13:02:10 +08:00

metadata.go

feat: extend TCP keepalive support to all TCP-based listeners and dialers

2026-05-08 14:32:53 +01:00