[Twisted-Python] Want something fixed?

Hi all, I'd like someone to do a review on #4395 - a ticket about some conch key exchange bugs. The branch isn't very large, a little under 500 lines of diff (with nearly a hundred of those deletions). In exchange for a thorough review (and perhaps a re-review if issues are found which need to be fixed), I'd be happy to spend as much as a full day working on some other issue of the reviewer's choice. Thanks, Jean-Paul