import socket


def check_port(host='127.0.0.1', port=8765):
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.settimeout(2)
    try:
        result = sock.connect_ex((host, port))
        if result == 0:
            print(f"✅ 端口 {port} 在 {host} 已开放")
            return True
        else:
            print(f"❌ 端口 {port} 在 {host} 未开放 (错误码: {result})")
            return False
    except Exception as e:
        print(f"❌ 检查端口失败: {e}")
        return False
    finally:
        sock.close()


if __name__ == "__main__":
    # 测试不同地址
    print("测试本地连接:")
    check_port('127.0.0.1', 8765)

    print("\n测试回环地址:")
    check_port('localhost', 8765)

    print("\n测试所有网络接口:")
    check_port('0.0.0.0', 8765)