2019-02-18 10:16:35,884 - ERROR - run:604 - Exception while handling connection <socket.socket fd=1024, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('172.17.0.2', 8899), raddr=('172.17.0.1', 50078)> with reason ValueError('filedescriptor out of range in select()')
Traceback (most recent call last):
  File "./proxy.py", line 600, in run
    self._process()
  File "./proxy.py", line 575, in _process
    r, w, x = select.select(rlist, wlist, xlist, 1)
ValueError: filedescriptor out of range in select()