From d5c59c5174a173c9b4f79e3bff0b1894db9493c2 Mon Sep 17 00:00:00 2001
From: Episkey <run.gu@ucloud.cn>
Date: Mon, 26 Jan 2026 15:11:43 +0800
Subject: [PATCH] fix(gateway): close server in canBindToHost error handler

Ensure testServer.close() is called in both success and error paths
to prevent file descriptor leaks when bind fails.
---
 CHANGELOG.md       | 1 +
 src/gateway/net.ts | 1 +
 2 files changed, 2 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9742150a3..1f6993076 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,7 @@ Status: unreleased.
 
 ### Fixes
 - Web UI: improve WebChat image paste previews and allow image-only sends. (#1925) Thanks @smartprogrammer93.
+- Gateway: fix server resource leak in canBindToHost error handler.
 
 ## 2026.1.24-3
 
diff --git a/src/gateway/net.ts b/src/gateway/net.ts
index 608ec872f..a743140c9 100644
--- a/src/gateway/net.ts
+++ b/src/gateway/net.ts
@@ -140,6 +140,7 @@ export async function canBindToHost(host: string): Promise<boolean> {
   return new Promise((resolve) => {
     const testServer = net.createServer();
     testServer.once("error", () => {
+      testServer.close();
       resolve(false);
     });
     testServer.once("listening", () => {