cleanup server socket and client close

networkconfig.py

@@ -199,6 +199,7 @@ def stop():
 
     if server_socket:
         server_socket.close()
+        server_socket = None
 
 
 def start(port=80):
@@ -227,13 +228,12 @@ def start(port=80):
     while True:
 
         if wlan_sta.isconnected():
-            client.close
             return True
 
         client, addr = server_socket.accept()
-        client.settimeout(5.0)
-
         print('client connected from', addr)
+        try:
+            client.settimeout(5.0)
 
             request = b""
             try:
@@ -245,7 +245,6 @@ def start(port=80):
             print("Request is: {}".format(request))
             if "HTTP" not in request:
                 # skip invalid requests
-            client.close()
                 continue
 
             # version 1.9 compatibility
@@ -262,4 +261,5 @@ def start(port=80):
             else:
                 handle_not_found(client, url)
 
+        finally:
             client.close()