WebsocketProxy is an http.Handler interface build on top of gorilla/websocket that you can plug into your existing Go webserver to provide WebSocket reverse proxy.
go get github.com/koding/websocketproxy
Below is a simple server that proxies to the given backend URL
package main import ( "flag" "net/http" "net/url" "github.com/koding/websocketproxy" ) var ( flagBackend = flag.String("backend", "", "Backend URL for proxying") ) func main() { u, err := url.Parse(*flagBackend) if err != nil { log.Fatalln(err) } err = http.ListenAndServe(":80", websocketproxy.NewProxy(u)) if err != nil { log.Fatalln(err) } }
Save it as proxy.go and run as:
go run proxy.go -backend ws://example.com:3000
Now all incoming WebSocket requests coming to this server will be proxied to
ws://example.com:3000