socket.io的 Python客戶端中文encode問題

socketIO-client是python實現的SocketIO客戶端。

問題

當接收到中文消息時出現下方錯誤，簡單說就是編碼問題。

Traceback (most recent call last):
  File "sub.py", line 24, in <module>
    socketIO.wait()
  File "/usr/local/lib/python3.5/site-packages/socketIO_client/__init__.py", line 232, in wait
    self._process_packets()
  File "/usr/local/lib/python3.5/site-packages/socketIO_client/__init__.py", line 254, in _process_packets
    for engineIO_packet in self._transport.recv_packet():
  File "/usr/local/lib/python3.5/site-packages/socketIO_client/transports.py", line 155, in recv_packet
    six.b(packet_text))
  File "/usr/local/lib/python3.5/site-packages/six.py", line 620, in b
    return s.encode("latin-1")
UnicodeEncodeError: 'latin-1' codec can't encode characters in position 21-27: ordinal not in range(256)

解決方法

1. 找到socketIO_client的安裝路徑，例中跟six.py在同一目錄下，路徑是/usr/local/lib/python3.5/site-packages/socketIO_client/.

2. 找到socketIO_client文件夾下的transports.py文件

3. 用編輯器打開transports.py，在144行左右的位置找到recv_packet函數

   def recv_packet(self):
       try:
           packet_text = self._connection.recv()
       except websocket.WebSocketTimeoutException as e:
           raise TimeoutError('recv timed out (%s)' % e)
       except websocket.SSLError as e:
           raise ConnectionError('recv disconnected by SSL (%s)' % e)
       except websocket.WebSocketConnectionClosedException as e:
           raise ConnectionError('recv disconnected (%s)' % e)
       except socket.error as e:
           raise ConnectionError('recv disconnected (%s)' % e)
       engineIO_packet_type, engineIO_packet_data = parse_packet_text(
           six.b(packet_text))
       yield engineIO_packet_type, engineIO_packet_data

4. 修改倒數第二行six.b(packet_text))爲six.u(packet_text))，修改後保存.

5. 再次運行代碼接收中文消息，代碼正常運行.