Hi, I’m Matthew Shao from China. This year, I got the honor to be selected as a Google Summer of Code student for the mitmproxy project. With the help of my kindly mentors Maximilian Hils and Clemens Brunner, I managed to improve the source code of mitmweb, which is a web interface for mitmproxy, and added some exciting new features for it. Here I’m going to present you the work I’ve done during this fulfilling summer.

With Google Summer of Code (GSoC) 2017 being around the corner, we’d like to do a short flashback to 2016, our most successful GSoC year for mitmproxy so far! GSoC 2016 was mitmproxy’s fourth time participating in the program under the umbrella of the Honeynet Project. For the first time, we were able to mentor three students over the summer to work on both our Python core and the brand new web interface. As a major milestone, mitmproxy is now a Python 3 project and has a fantastic user interface that even works on Windows. With these improvements in, we finally decided to pull the trigger and called it the mitmproxy 1.0 release!

We are happy to announce the immediate availability of mitmproxy 0.16! As a major new feature, Thomas Kriechbaumer – who joined us as a Google Summer of Code (GSoC) Student last year – contributed a brand new HTTP/2 implementation built on top of hyper-h2. HTTP/2 requests now blend into the mitmproxy UI just like regular HTTP 1 requests, making mitmproxy the first interactive HTTPS proxy with HTTP/2 support! All HTTP/2 features from RFC7540 are supported - including PUSH_PROMISE, RST_STREAM, and as many concurrent streams as you want. We are super excited about the improvements Thomas is bringing us here and we encourage you to try them out. To make a transition as seamless as possible, HTTP/2 needs to be enabled manually for now by passing --http2 to mitmproxy. We plan to remove this requirement with one of the next releases. For a full list of changes, take a look at the changelog posted below!