From 0dc79cc0119043374da3ae8ac3844b1a4e0a9627 Mon Sep 17 00:00:00 2001
From: snowgitea <haoyuexc100@outlook.com>
Date: Wed, 1 Jul 2026 17:55:37 +0800
Subject: [PATCH] chore: src/comm/port.ts

---
 src/comm/port.ts | 51 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 src/comm/port.ts

diff --git a/src/comm/port.ts b/src/comm/port.ts
new file mode 100644
index 0000000..a1679de
--- /dev/null
+++ b/src/comm/port.ts
@@ -0,0 +1,51 @@
+import { execSync } from 'child_process';
+
+/**
+ * 同步检查端口是否可用（通过系统命令）
+ * @param {number} port - 要检查的端口
+ * @returns {boolean} - 是否可用
+ */
+function isPortAvailableSync(port: number): boolean {
+  try {
+    if (process.platform === 'win32') {
+      // Windows 使用 netstat 检查端口，排除 TIME_WAIT 状态
+      const result = execSync(`netstat -ano | findstr :${port}`, {
+        encoding: 'utf-8',
+      });
+      // 如果端口只处于 TIME_WAIT 状态，则认为端口可用
+      return !result || result.toLowerCase().includes('time_wait');
+    } else {
+      // Linux/Mac 使用 lsof 检查端口，只检查 LISTEN 状态
+      const result = execSync(`lsof -i :${port} -sTCP:LISTEN`, {
+        encoding: 'utf-8',
+      });
+      return !result;
+    }
+  } catch (error) {
+    // 命令执行失败，端口可用
+    return true;
+  }
+}
+
+/**
+ * 查找可用端口（同步）
+ * @param {number} startPort - 起始端口
+ * @returns {number} - 可用的端口
+ */
+export function availablePort(startPort: number): number {
+  if (!process['pkg']) return startPort;
+  let port = startPort;
+  while (port <= 8010) {
+    if (isPortAvailableSync(port)) {
+      if (port !== startPort) {
+        console.warn(
+          '\x1b[33m%s\x1b[0m',
+          `Port ${startPort} is occupied, using port ${port}`
+        );
+      }
+      return port;
+    }
+    port++;
+  }
+  return 8001;
+}