@andstatus Maybe Twitter - a single server environment - has implemented this hack too. But we can't all do it. And we're not all going to switch to nginx.
So I guess you haven't tried sending the Content-Length yet. I'll ignore this thread until I know it has been tested and failed. You're welcome to send me the .apk of a test build which sends that header if you still experience problems (which likely won't be "411" errors).