Some additional repos to consider:
gtunnel — a stunnel like util write by golang
levigross/go-tunnel — A STunnel Replacement written in Go
opencoff/go-tunnel — TLS/SSL Tunnel - A modern STunnel replacement written in golang
stunnel — A Secure TCP tunnel (TLS tunnel) written in Go.
Once a week...... I send out a list of most interesting Go libraries and apps.
Want to get it?