@hannes2peer@quitter.se Of course most of problems may be fixed from different sides (client or server). However, solving the problem by configuration/library updates is much easier than redoing client application.
Regarding Mustard application - it is actually an example of a non-maintainable code resulted from numerous patches (probably to fix issues like this one). I will try to solve this issue reusing available library, not by a patch into current apache.httpclient code...

@moshpirit@quitter.es @mmn@social.umeahackerspace.se