Here's a Go version in 41 lines of source code I wrote in 2016: https://github.com/gophergala2016/goxy/blob/master/goxy.go https://github.com/gophergala2016/go

Here's a Go version in 41 lines of source code I wrote in 2016: https://github.com/gophergala2016/goxy/blob/master/goxy.go https://github.com/gophergala2016/goxy/blob/master/goxy.go And a forward proxy that supports middleware like adding CORS headers, logging, etc... https://github.com/montanaflynn/roxy https://github.com/montanaflynn/roxy