socket.io的 Python客户端中文encode问题

socketIO-client是python实现的SocketIO客户端。

问题

当接收到中文消息时出现下方错误，简单说就是编码问题。

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)

解决方法

1. 找到socketIO_client的安装路径，例中跟six.py在同一目录下，路径是/usr/local/lib/python3.5/site-packages/socketIO_client/.

2. 找到socketIO_client文件夹下的transports.py文件

3. 用编辑器打开transports.py，在144行左右的位置找到recv_packet函数

   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. 修改倒数第二行six.b(packet_text))为six.u(packet_text))，修改后保存.

5. 再次运行代码接收中文消息，代码正常运行.