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hjc4869 Q: Why not open source everything?
All code will be released eventually. We started with the most useful parts — a well-documented API that allows developers to build new Telegram apps, and open source clients that can be verified by security specialists.
Q: Can I run Telegram using my own server?
Our architecture does not support federation yet. Telegram is a unified cloud service, so creating forks where two users might end up on two different Telegram clouds is unacceptable. To enable you to run your own Telegram server while retaining both speed and security is a task in itself. At the moment we are undecided on whether or not Telegram should go in this direction.
他们的服务器暂时没有开源，所以不大可能自建服务。