The following sample code worked until Twisted began to prefer memory BIOs over
socket BIOs. Now it produces this error...
exceptions.AttributeError: 'NoneType' object has no attribute 'getpeername'
...on line 9 where getpeername() is called by the verify() callback.
Is there any way to obtain the peer name, given the OpenSSL.SSL.Connection
object passed into verify()? Anything that surfaces the underlying socket?
(Perhaps something similar to what is done in connectionMade(), which does
work.) Or alternatively, is there a way to tell the reactor to employ socket
BIOs?
Thanks,
Nathan
----------------------------------------------
from OpenSSL import SSL
from twisted.internet import reactor, ssl
from twisted.internet.protocol import ClientFactory
from twisted.protocols.basic import LineReceiver
class VerifyContextFactory(ssl.ClientContextFactory):
def verify(self, connection, x509, errnum, errdepth, ok):
print connection.getpeername()[0]
return ok
def getContext(self):
ctx = ssl.ClientContextFactory.getContext(self)
ctx.set_verify(SSL.VERIFY_PEER|SSL.VERIFY_FAIL_IF_NO_PEER_CERT,
self.verify)
return ctx
class MyClient(LineReceiver):
def connectionMade(self):
print "connected to", self.transport.socket.getpeername()[0]
return
def connectionFailed(self, reason):
reactor.stop()
def connectionLost(self, reason):
reactor.stop()
class MyClientFactory(ClientFactory):
protocol = MyClient
if __name__ == "__main__":
reactor.connectSSL('www.example.com', 443, MyClientFactory(),
VerifyContextFactory())
reactor.run()
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