fix(infra): pin ensurePortAvailable to 127.0.0.1 in startSshPortForward

xzh-icenter · xzh-icenter · commit 5e7d8fff11e5 · 2026-06-18T14:27:38.000Z
Every other probe in ssh-tunnel.ts is pinned to IPv4 loopback (pickEphemeralPort, canConnectLocal, the -L forward itself), but ensurePortAvailable was called host-less. On a dual-stack host the host-less probe binds the IPv6 wildcard :: and misses an IPv4-only occupant, reporting a busy port as free. Pass "127.0.0.1" to match the interface this caller actually owns, consistent with the fix in #94394. Fixes #94596
diff --git a/src/infra/ssh-tunnel.ts b/src/infra/ssh-tunnel.ts
@@ -119,7 +119,7 @@ export async function startSshPortForward(opts: {
 
   let localPort = opts.localPortPreferred;
   try {
-    await ensurePortAvailable(localPort);
+    await ensurePortAvailable(localPort, "127.0.0.1");
   } catch (err) {
     if (isErrno(err) && err.code === "EADDRINUSE") {
       localPort = await pickEphemeralPort();
