Jython CGIHTTPServer错误“套接字必须处于非阻塞模式”

Question

通过'jython -m CGIHTTPServer‘使用jython作为CGI服务器会导致C-Python中没有的错误：error: (20000, 'socket must be in non-blocking mode').

如果有人(像我一样)想要使用jython作为jython模型、脚本等的简单CGI-Server，这是不可接受的。我找到了一个解决方案，希望这也能对其他人有所帮助：

编辑文件jython/Lib/select.py并转到标记的行，然后添加带有箭头的两行(见下文)。然后，正如C-Python中已知的那样，一切都工作得很好。

jython/Lib/select.py：

... 

class poll:

... 

  def register(self, socket_object, mask = POLLIN|POLLOUT|POLLPRI):
      try:            

          try:    socket_object.setblocking(0)  # <-- line to add
          except: pass                          # <-- line to add

          channel = _getselectable(socket_object)
          if channel is None:
              # The socket is not yet connected, and thus has no channel
              # Add it to a pending list, and return
              self.unconnected_sockets.append( (socket_object, mask) )
              return
          self._register_channel(socket_object, channel, mask)
      except java.lang.Exception, jlx:
          raise _map_exception(jlx)

  ...

Answer 1

对于某些应用程序，我在响应过程中遇到了setblocking(0)的问题。所以我还修改了jython/Lib/socket.py，如下所示：

jython/Lib/socket.py：

class _tcpsocket(_nonblocking_api_mixin): 

  ...

  def send(self, s):
      try:
          if not self.sock_impl: raise error(errno.ENOTCONN, 'Socket is not connected')
          if self.sock_impl.jchannel.isConnectionPending():
            self.sock_impl.jchannel.finishConnect()
          numwritten = self.sock_impl.write(s)            

          # try again in blocking mode
          if numwritten == 0 and self.mode == MODE_NONBLOCKING: # <-- line to add
            try:    self.setblocking(1)                         # <-- line to add
            except: pass                                        # <-- line to add
            numwritten = self.sock_impl.write(s)                # <-- line to add


          if numwritten == 0 and self.mode == MODE_NONBLOCKING:
              raise would_block_error()
          return numwritten
      except java.lang.Exception, jlx:
          raise _map_exception(jlx)

  ...   

我知道这两个更改都不是很“干净”，但这是让Jython作为CGIHTTPServer像Python一样工作的唯一方法。