我有一个使用twisted 的高速公路WebSocket 框架实现的WebSocket 服务器。当程序使用 python 运行时，WebSocket 服务器运行良好。但是，如果我通过将 tac 文件创建为扭曲服务来使用扭曲服务器运行程序运行它，当任何客户端尝试建立连接并且握手失败时，我会在服务器中收到以下错误。
2015-12-08 07:17:56,022 - CRITICAL - twisted.publishToNewObserver() 154 Unhandled Error
Traceback (most recent call last):
File "/opt/nrgi-ws/nrgi-ws-virtual-env/local/lib/python2.7/site-packages/twisted/python/log.py", line 84, in callWithContext
return context.call({ILogContext: newCtx}, func, *args, **kw)
File "/opt/nrgi-ws/nrgi-ws-virtual-env/local/lib/python2.7/site-packages/twisted/python/context.py", line 118, in callWithContext
return self.currentContext().callWithContext(ctx, func, *args, **kw)
File "/opt/nrgi-ws/nrgi-ws-virtual-env/local/lib/python2.7/site-packages/twisted/python/context.py", line 81, in callWithContext
return func(*args,**kw)
File "/opt/nrgi-ws/nrgi-ws-virtual-env/local/lib/python2.7/site-packages/twisted/internet/posixbase.py", line 597, in _doReadOrWrite
why = selectable.doRead()
--- <exception caught here> ---
File "/opt/nrgi-ws/nrgi-ws-virtual-env/local/lib/python2.7/site-packages/twisted/internet/tcp.py", line 1067, in doRead
protocol = self.factory.buildProtocol(self._buildAddr(addr))
File "/opt/nrgi-ws/nrgi-ws-virtual-env/local/lib/python2.7/site-packages/twisted/internet/protocol.py", line 135, in buildProtocol
p = self.protocol()
File "/opt/nrgi-ws/nrgi-ws-virtual-env/local/lib/python2.7/site-packages/autobahn/websocket/protocol.py", line 665, in __init__
self.is_closed = txaio.create_future()
File "/opt/nrgi-ws/nrgi-ws-virtual-env/local/lib/python2.7/site-packages/txaio/_unframework.py", line 43, in _throw_usage_error
"To use txaio, you must first select a framework "
exceptions.RuntimeError: To use txaio, you must first select a framework with .use_twisted() or .use_txaio()