base.py 文件源码

def getHostByName(self, name, timeout = (1, 3, 11, 45)):
        if timeout:
            timeoutDelay = reduce(operator.add, timeout)
        else:
            timeoutDelay = 60
        userDeferred = defer.Deferred()
        lookupDeferred = threads.deferToThread(socket.gethostbyname, name)
        cancelCall = self.reactor.callLater(
            timeoutDelay, self._cleanup, name, lookupDeferred)
        self._runningQueries[lookupDeferred] = (userDeferred, cancelCall)
        lookupDeferred.addBoth(self._checkTimeout, name, lookupDeferred)
        return userDeferred