Speed isn't actually too much of an issue with the ruby client, since all the CPU time is spent in the GnuTLS and Digest::SHA256 code, which is already written

Speed isn't actually too much of an issue with the ruby client, since all the CPU time is spent in the GnuTLS and Digest::SHA256 code, which is already written in C. The problem is portability to android and iOS. We additionally want to make the core easy to embed in other applications.