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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/websocketproxyBelow 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:3000Now all incoming WebSocket requests coming to this server will be proxied to ws://example.com:3000