Failing to migrate from a standard http server to Echo

[mgingios]

Hello,

I am not sure that this discussion area is for posting questions that could help others when they migrate to Echo Server. If this posting in inappropriate, please delete it, otherwise, here is my question...

I have code that works with the standard HTTP server in Go, but I cannot figure out how to make it work with Labstack's Echo Server. The following shows the conversion that I cannot get to work properly.

I'd really appreciate your help to figure this out.

Thanks for your interest and time!

STANDARD HTTP SERVER CODE

        /// grpc-gateway HTTP proxy mux.
        mux := runtime.NewServeMux()
        .
        .
        .       		
        server := http.Server{ Handler: mux }
		if l, err := net.Listen("tcp", ":8090"); err == nil {
			if err = server.Serve(l); err != nil {
				log.Fatal(err)
			}
		} else {
			log.Fatal(err)
		}

LABSTACK'S ECHO SERVER

        /// grpc-gateway HTTP proxy mux.
        mux := runtime.NewServeMux()
        .
        .
        .          
	e := echo.New()

	// How to assign the mux, which is a handler?

	if l, err := net.Listen("tcp", ":8090"); err == nil {
		e.Listener = l
		e.Logger.Fatal(e.Start(":8090"))
	} else {
		log.Fatal(err)
	}

[aldas]

From runtime.NewServeMux() I assume you are using https://github.com/grpc-ecosystem/grpc-gateway From that library description it seems that it would be maybe possible to distinguish REST calls that will be proxied to GRPC server and other HTTP calls that Echo handles.

func main() {
	e := echo.New()
	e.Use(middleware.Logger())
	e.Use(middleware.Recover())

	mux := runtime.NewServeMux()
//...
	
	e.Any("/prefix", echo.WrapHandler(mux)) // all HTTP requests starting with `/prefix` are handled by `grpc-gateway`
	
	e.Logger.Fatal(e.Start(":8080"))
}

[mgingios]

Yeah... I was looking at the cmux package for that purpose... I was hoping to not introduce any special packages, if possible.

[baldr9]

this may help

• https://blog.logrocket.com/guide-to-grpc-gateway/
  • this mentions how to do it using cmux
• [Question] possible without tls philips/grpc-gateway-example#22
• https://github.com/soheilhy/cmux/blob/master/README.md