How to get the client IP address after got connection lost in twisted

问题

I know we can get the client (host) IP after connection has been established because at that time we will have transport attribute:

self.transport.getPeer()

but how do I get the IP address of the client in twisted TCP server when it lost connection to the server, as in after it got disconnected.

回答1:

Its a little late for that. I suggest you save this information when you have it. For example:

class YourProtocol(protocol.Protocol):

    def connectionMade(self):
        self._peer = self.transport.getPeer()

    def connectionLost(self):
        print 'Lost connection from', self._peer

回答2:

While this has already been answered, i thought i would quickly add mine so i do not forget this in the future... As we know, the docs for Twisted are .. well twisted...

def connectionLost(self):
    ip, port = self.transport.client
    print ip
    print port

By using the above, you can then simply match the ip/port against what ever database or means you have of keeping track of clients.

I ended up finding by using print vars(self.transport) and seeing the client object in the output/console... using classic php debugging here

来源：https://stackoverflow.com/questions/14278555/how-to-get-the-client-ip-address-after-got-connection-lost-in-twisted