We are working on improving Tor's pluggable transports specification: <https://spec.torproject.org/pt-spec> The goal is to make the spec useful to more people and fix issues that have accumulated over the years. For more context, have a look at the following ticket, which we use to coordinate this effort: <https://bugs.torproject.org/29285> Before changing the spec, we need to understand its shortcomings and what issues implementers have run into. For those of you who have experience with the spec -- either Tor's version 1.0 or version 2.1 maintained by pluggabletransports.info -- please let us know: * What version of the PT specification and what library implementation (if any) are you using? * What has your experience been with the PT specification? * How would you improve the specification? Thanks, Philipp