refactor: consolidate port connection checks into a single method

Author: SakuraPuare

app/lib/static/util.py

@@ -67,21 +67,25 @@ def get_system_proxy(sys_plc=None):
         return ""
 
     @staticmethod
-    def is_local_connect(add, prt):
-        # 检测本地是否可通
+    def check_port_connection(port, host="localhost", timeout=1):
         try:
-            telnetlib.Telnet(add, port=prt, timeout=1)
-            return True
+            port = int(port)
+            if port < 0 or port > 65535:
+                return False
+                
+            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+                s.settimeout(timeout)
+                return s.connect_ex((host, port)) == 0
         except:
             return False
+            
+    @staticmethod
+    def is_local_connect(add, prt):
+        return StaticUtil.check_port_connection(prt, add)
 
     @staticmethod
     def is_prot_in_use(port):
-        port = int(port)
-        if port >= 0 and port <= 65535:
-            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
-                return s.connect_ex(("localhost", port)) == 0
-        return False
+        return StaticUtil.check_port_connection(port)
 
     @staticmethod
     def format_time(date_string, style, to="%Y-%m-%d %H:%M:%S"):