Python Twisted：如何为本地主机连接使用不同的资源层次结构？

Question

我想对本地主机连接使用一个资源层次结构，对所有其他连接使用另一种资源层次结构。我该怎么办呢？

publicSite = Site(File("/var/www/"))
localhostSite = Site(File("/var/localhost/"))

publicServer = TCPServer(80, publicSite, interface="0.0.0.0")
localhostServer = TCPServer(80, localhostSite, interface="127.0.0.1")

好像不能同时听两个不同的接口。

我收到以下错误：

Traceback (most recent call last):
File "/usr/bin/twistd", line 21, in <module>
  run()
File "/usr/lib/python2.5/site-packages/twisted/scripts/twistd.py", line 27, in run
  app.run(runApp, ServerOptions)
File "/usr/lib/python2.5/site-packages/twisted/application/app.py", line 379, in run
  runApp(config)
File "/usr/lib/python2.5/site-packages/twisted/scripts/twistd.py", line 23, in runApp
  _SomeApplicationRunner(config).run()
File "/usr/lib/python2.5/site-packages/twisted/application/app.py", line 158, in run
  self.postApplication()
File "/usr/lib/python2.5/site-packages/twisted/scripts/_twistd_unix.py", line 213, in postApplication
  startApplication(self.config, self.application)
File "/usr/lib/python2.5/site-packages/twisted/scripts/_twistd_unix.py", line 174, in startApplication
  service.IService(application).privilegedStartService()
File "/usr/lib/python2.5/site-packages/twisted/application/service.py", line 228, in privilegedStartService
  service.privilegedStartService()
File "/usr/lib/python2.5/site-packages/twisted/application/internet.py", line 68, in privilegedStartService
  self._port = self._getPort()
File "/usr/lib/python2.5/site-packages/twisted/application/internet.py", line 86, in _getPort
  return getattr(reactor, 'listen'+self.method)(*self.args, **self.kwargs)
File "/usr/lib/python2.5/site-packages/twisted/internet/posixbase.py", line 467, in listenTCP
  p.startListening()
File "/usr/lib/python2.5/site-packages/twisted/internet/tcp.py", line 733, in startListening
  raise CannotListenError, (self.interface, self.port, le)
twisted.internet.error.CannotListenError: Couldn't listen on 127.0.0.1:80: (98, 'Address already in use').

1

Answer 1

不要绑定到第二个服务器的 0.0.0.0，而是绑定到服务器上的一个或多个公共地址。 Twisted 不提供任何 API 来枚举主机上的地址，也不提供区分公共地址和私有地址的 API（因为也许您的“公共”地址是 10.xxx，并且防火墙正在转发来自“实际上”的流量） '公共地址）。

如果您需要发现您的地址而不是让它们通过配置提供，那么在 POSIX 上，这个 ioctl 示例可能会有所帮助。