CODEWITHSUNDEEP
httpgoreverse-proxygorillamux
squirreldev
squirreldev

Reputation: 527

Reverse proxy with httputil and gorilla/mux

I've been trying to reverse proxy some of my requests internally with httputil.NewSingleHostReverseProxy(*Url) I noticed that gorilla mux is not happy with this so I found a fix online that solved the issue for GET requests. However, it seems like like GET is the only request that will be reverse proxied correctly.

u = generated URL with url.Parse

api.Path("/feature").Methods("POST").HandlerFunc(handler(httputil.NewSingleHostReverseProxy(u)))

func handler(p *httputil.ReverseProxy) func(http.ResponseWriter, *http.Request) {
    return func(w http.ResponseWriter, r *http.Request) {
        r.URL.Path = mux.Vars(r)["path"]
        p.ServeHTTP(w, r)
    }
}

This works fine for GET requests, but when sending a POST or PATCH the receiving http method is set as GET. I have confirmed that the proxy's r.Method is POST on one end and GET on the other. Has anyone encountered this issue before, or know what could be causing this?

Upvotes: 1

Views: 2810

Answers (1)

squirreldev
squirreldev

Reputation: 527

This error was caused by the route returning a 301 still unclear why. ReverseProxy's fallback behavior on 301, 302, 303 is to support RFC 2616

https://github.com/golang/go/issues/18570 This rewrites the Method to GET

Upvotes: 1

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