MtProtoPlainSender was not connecting (closes #62)

telethon/network/mtproto_plain_sender.py

@@ -12,6 +12,7 @@ class MtProtoPlainSender:
         self._time_offset = 0
         self._last_msg_id = 0
         self._transport = transport
+        self._transport.connect()
 
     def send(self, data):
         """Sends a plain packet (auth_key_id = 0) containing the given message body (data)"""

telethon/network/tcp_client.py

@@ -31,11 +31,13 @@ class TcpClient:
 
     def connect(self, ip, port):
         """Connects to the specified IP and port number"""
+        if not self.connected:
             self.socket.connect((ip, port))
             self.connected = True
 
     def close(self):
         """Closes the connection"""
+        if self.connected:
             self.socket.close()
             self.connected = False