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Last active January 17, 2021 15:37
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Golang reverse proxy
package main
import (
"log"
"net/http"
"net/http/httputil"
)
func main() {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
director := func(req *http.Request) {
req = r
req.URL.Scheme = "http"
req.URL.Host = r.Host
}
proxy := &httputil.ReverseProxy{Director: director}
proxy.ServeHTTP(w, r)
})
log.Fatal(http.ListenAndServe(":8181", nil))
}
@elico
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elico commented Aug 10, 2015

This was helpful!!

@dthtvwls
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dthtvwls commented Oct 8, 2015

No, there's not. All this plumbing is already part of ReverseProxy. It could be rewritten as:

func main() {
    log.Fatal(http.ListenAndServe(":8181", &httputil.ReverseProxy{
        Director: func(r *http.Request) { ... }
    }))
}

@arun0009
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Can we reverse proxy a https connection?

@sylnsr
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sylnsr commented Mar 3, 2016

👍 "Can we reverse proxy a https connection?" .. I would also like to know.

@mrcrilly
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@arun0009 - yes. You would setup a custom listener with all the relevant TLS configuration. When you configure the httputil.ReverseProxy, you use an HTTP scheme and thus you're essentially doing TLS off-loading.

@dotqi
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dotqi commented Sep 9, 2018

How can I catch 502 errors and rewrite errors? Thank you

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