Weird, it works here. I put a copy on my webpage at http://csail.mit.edu/~julian/papers/login_nail.pdf http://csail.mit.edu/~julian/papers/login_nail.pdf As ha

Weird, it works here. I put a copy on my webpage at http://csail.mit.edu/~julian/papers/login_nail.pdf http://csail.mit.edu/~julian/papers/login_nail.pdf As has been pointed out below, there are many C bindings for Protobuf (and my argument was that using something like protobuf allows reimplementing the protocol).