I've just released pathod 0.9, my toolset for crafting malicious and interesting HTTP traffic. Apart from the usual range of stability improvements and bugfixes, this release introduces a major new set of features: proxy support. Pathoc, the client, has sprouted support for vanilla proxy connections, and is also able to tunnel through proxies using CONNECT. Pathod, the server, will now respond to proxy requests as well as straight HTTP, and will treat CONNECT requests as SSL with on-the-fly generation of dummy certificates.
The Pathod changes in particular open a whole new range of possibilities for fuzzing and other mischief. Any client with proxy support can be directed at Pathod, which can then impersonate the upstream server and return the creatively malicious response of your choice.
There have also been some organizational changes. This is the first release based on netlib, the gonzo networking library pathod now shares with mitmproxy. Over the next while, pathod and mitmproxy will move closer together. As a sign of this, the major version numbers between these projects are now synchronized.