Use the same port

src/client.py

@@ -58,9 +58,17 @@ class Client:
                 if not output_data:
                     break
                 writer.write(output_data)
+                try:
+                    await writer.drain()
+                except ConnectionResetError:
+                    logging.info('Server closed the connection.')
+                    self.stop()
+                    break
+            else:
+                # If transmission has succeeded, write end of file
+                writer.write_eof()
                 await writer.drain()
-        writer.write_eof()
-        await writer.drain()
+        return
 
     async def run_receiving_client(self, file_path='~/input.txt'):
         self._file_path = file_path
@@ -117,8 +125,8 @@ if __name__ == '__main__':
     loop = asyncio.get_event_loop()
     client = Client(
         # host='127.0.0.1',  # localhost
-        host='5.249.159.33',  # Aruba
-        port=(5000 if action == 'send' else 5001),
+        host='davte.it',  # Aruba
+        port=5000,
     )
     # loop.add_signal_handler(signal.SIGINT, client.stop, loop)
     logging.info("Starting client...")
@@ -127,4 +135,4 @@ if __name__ == '__main__':
     else:
         loop.run_until_complete(client.run_receiving_client(file_path=_file_path))
     loop.close()
-    logging.info("Stopped server")
+    logging.info("Stopped client")

src/server.py

@@ -4,29 +4,25 @@ import logging
 
 
 class Server:
-    def __init__(self, host='localhost', input_port=5000, output_port=5001,
+    def __init__(self, host='localhost', port=5000,
                  buffer_chunk_size=10**4, buffer_length_limit=10**4):
         self._host = host
-        self._input_port = input_port
-        self._output_port = output_port
+        self._port = port
         self._stopping = False
         self.buffer = collections.deque()  # Shared queue of bytes
         self._buffer_chunk_size = buffer_chunk_size   # How many bytes per chunk
         self._buffer_length_limit = buffer_length_limit  # How many chunks in buffer
         self._working = False
         self.at_eof = False
+        self._server = None
 
     @property
     def host(self) -> str:
         return self._host
 
     @property
-    def input_port(self) -> int:
-        return self._input_port
-
-    @property
-    def output_port(self) -> int:
-        return self._output_port
+    def port(self) -> int:
+        return self._port
 
     @property
     def stopping(self) -> bool:
@@ -44,6 +40,10 @@ class Server:
     def working(self) -> bool:
         return self._working
 
+    @property
+    def server(self) -> asyncio.base_events.Server:
+        return self._server
+
     async def run_reader(self, reader):
         while not self.stopping:
             try:
@@ -79,23 +79,33 @@ class Server:
             except Exception as e:
                 logging.error(e)
 
-    # noinspection PyUnusedLocal
-    async def handle_incoming_data(self, reader: asyncio.StreamReader, writer: asyncio.StreamWriter):
-        self._working = True
-        asyncio.ensure_future(self.run_reader(reader=reader))
+    async def connect(self,
+                      reader: asyncio.StreamReader,
+                      writer: asyncio.StreamWriter):
+        """Connect with client.
 
-    # noinspection PyUnusedLocal
-    async def handle_outgoing_data(self, reader: asyncio.StreamReader, writer: asyncio.StreamWriter):
-        self._working = True
-        asyncio.ensure_future(self.run_writer(writer=writer))
+        Decide whether client is sender or receiver and start transmission.
+        """
+        if not self.working:
+            self._working = True
+            logging.info("Sender is connecting...")
+            await self.run_reader(reader=reader)
+            logging.info("Incoming transmission ended")
+        else:
+            logging.info("Receiver is connecting...")
+            await self.run_writer(writer=writer)
+            logging.info("Outgoing transmission ended")
+            self.stop()
+        return
 
     async def run_server(self):
-        reader_server = await asyncio.start_server(client_connected_cb=self.handle_incoming_data,
-                                                   host=self.host, port=self.input_port)
-        await asyncio.start_server(client_connected_cb=self.handle_outgoing_data,
-                                   host=self.host, port=self.output_port)
-        async with reader_server:
-            await reader_server.serve_forever()
+        self._server = await asyncio.start_server(
+            client_connected_cb=self.connect,
+            host=self.host,
+            port=self.port
+        )
+        async with self.server:
+            await self.server.serve_forever()
         return
 
     def stop(self, *_):
@@ -107,6 +117,7 @@ class Server:
 
 
 if __name__ == '__main__':
+    # noinspection SpellCheckingInspection
     log_formatter = logging.Formatter(
         "%(asctime)s [%(module)-15s %(levelname)-8s]     %(message)s",
         style='%'
@@ -123,8 +134,7 @@ if __name__ == '__main__':
     server = Server(
         # host='127.0.0.1',  # localhost
         host='5.249.159.33',  # Aruba
-        input_port=5000,
-        output_port=5001
+        port=5000,
     )
     logging.info("Starting file bridging server...")
     try: