Created
May 14, 2023 00:09
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proxy.go
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| package main | |
| import ( | |
| "crypto/tls" | |
| "fmt" | |
| "io" | |
| "log" | |
| "net" | |
| "net/http" | |
| "time" | |
| ) | |
| func handleTunneling(w http.ResponseWriter, r *http.Request) { | |
| destConn, err := net.DialTimeout("tcp", r.Host, 10*time.Second) | |
| if err != nil { | |
| http.Error(w, err.Error(), http.StatusServiceUnavailable) | |
| return | |
| } | |
| w.WriteHeader(http.StatusOK) | |
| hijacker, ok := w.(http.Hijacker) | |
| if !ok { | |
| http.Error(w, "Hijacking not supported", http.StatusInternalServerError) | |
| return | |
| } | |
| clientConn, _, err := hijacker.Hijack() | |
| if err != nil { | |
| http.Error(w, err.Error(), http.StatusServiceUnavailable) | |
| } | |
| go transfer(destConn, clientConn) | |
| go transfer(clientConn, destConn) | |
| } | |
| func transfer(destination io.WriteCloser, source io.ReadCloser) { | |
| defer destination.Close() | |
| defer source.Close() | |
| io.Copy(destination, source) | |
| } | |
| func handleHTTP(w http.ResponseWriter, req *http.Request) { | |
| resp, err := http.DefaultTransport.RoundTrip(req) | |
| if err != nil { | |
| http.Error(w, err.Error(), http.StatusServiceUnavailable) | |
| return | |
| } | |
| defer resp.Body.Close() | |
| copyHeader(w.Header(), resp.Header) | |
| w.WriteHeader(resp.StatusCode) | |
| io.Copy(w, resp.Body) | |
| } | |
| func copyHeader(dst, src http.Header) { | |
| for k, vv := range src { | |
| for _, v := range vv { | |
| dst.Add(k, v) | |
| } | |
| } | |
| } | |
| func main() { | |
| server := &http.Server{ | |
| Addr: ":8888", | |
| Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | |
| fmt.Printf("Req: %+v %s\n", r.URL, r.URL.Path) | |
| fmt.Println("GET params were:", r.URL.Query()) | |
| if r.Method == http.MethodConnect { | |
| handleTunneling(w, r) | |
| } else { | |
| handleHTTP(w, r) | |
| } | |
| }), | |
| // Disable HTTP/2. | |
| TLSNextProto: make(map[string]func(*http.Server, *tls.Conn, http.Handler)), | |
| } | |
| log.Fatal(server.ListenAndServe()) | |
| } |
@iamwavecut Thank you for suggestion. fmt.Printf("%s://%s%s", r.URL.Scheme, r.Host, r.RequestURI)
This is what it outputs
://www.youtube.com:443www.youtube.com:443
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fmt.Sprintf("%s://%s%s", r.URL.Scheme, r.Host, r.RequestURI())