Question

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.

Answer 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