fix: open/close client sockets

src/myftp/client.py

@@ -52,11 +52,10 @@ class UDPClient:
         if not self.pong_received:
             return
 
-        while True:
-            try:
         client_socket = socket(AF_INET, SOCK_DGRAM)
-                client_socket.connect((self.server_name, self.server_port))
 
+        try:
+            while True:
                 # get command from user
                 command = input(f"myftp> - {self.mode} - : ").strip().lower()
 
@@ -112,10 +111,11 @@ class UDPClient:
                     )
                     continue
 
-                client_socket.send(request_payload.encode("utf-8"))
+                client_socket.sendto(request_payload.encode("utf-8"), (self.server_name, self.server_port))
+
                 modified_message = client_socket.recv(2048)[1:]
+
                 print(modified_message.decode())
-                client_socket.close() # type: ignore
 
         except ConnectionRefusedError:
             print(
@@ -125,6 +125,8 @@ class UDPClient:
             print(
                 f"myftp> - {self.mode} - {error} happened."
             )
+        finally:
+            client_socket.close()
 
     # ping pong UDP
     def check_udp_server(self):