On Dec 27, 2011, at 7:01 AM, Saúl Ibarra Corretgé wrote:

Hi all,

I'm experiencing a TypeError exception in my code since I updated to Twisted 11.1. After hunting it it seems to be caused because the loseConnection function from (_newtls) lacks arguments.

If there is no OpenSSL support present in the system the loseConnection function will be called in abstract.FileDescriptor (please, correct me if I'm wrong), and the signature for loseConnection is the following:

def loseConnection(self, _connDone=failure.Failure(main.CONNECTION_DONE)):

Shouldn't it be the same for _newtls.ConnectionMixin ? Or perhaps it should accept *args and **kw and pass them on? Or am I wrong here?

Thanks and regards,

-- /Saúl http://saghul.net | http://sipdoc.net

Hi Saúl, The _connDone argument there is an internal convenience for that implementation of loseConnection(); it is not part of the API. ITransport specifies that loseConnection takes no arguments. See here: <http://twistedmatrix.com/documents/current/api/twisted.internet.interfaces.ITransport.html#loseConnection>. You should fix your code to never pass an argument to loseConnection, as other transport implementations may also lack this argument. (As a bizarre accident, the IOCP reactor also has this argument in its transport implementation, but there's no reason that it necessarily should.) However, the fact that you thought otherwise is a bug in our documentation :). Please feel free to file tickets (<http://twistedmatrix.com/trac/newticket>) describing how you got to the loseConnection that takes an argument and why you didn't realize that you should be looking at ITransport instead :). Thanks, -glyph