We use a supervising process [1] that has bound the sockets and the pass in the file descriptors to Go process. When the new process is ready to take connectio

We use a supervising process [1] that has bound the sockets and the pass in the file descriptors to Go process. When the new process is ready to take connections it sense a signal to the original process to shut down. [1] https://github.com/cloudflare/circus/commits/cloudflare2 https://github.com/cloudflare/circus/commits/cloudflare2