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- // Copyright 2015 The Go Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style
- // license that can be found in the LICENSE file.
- package httputil_test
- import (
- "fmt"
- "io"
- "log"
- "net/http"
- "net/http/httptest"
- "net/http/httputil"
- "net/url"
- "strings"
- )
- func ExampleDumpRequest() {
- ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
- dump, err := httputil.DumpRequest(r, true)
- if err != nil {
- http.Error(w, fmt.Sprint(err), http.StatusInternalServerError)
- return
- }
- fmt.Fprintf(w, "%q", dump)
- }))
- defer ts.Close()
- const body = "Go is a general-purpose language designed with systems programming in mind."
- req, err := http.NewRequest("POST", ts.URL, strings.NewReader(body))
- if err != nil {
- log.Fatal(err)
- }
- req.Host = "www.example.org"
- resp, err := http.DefaultClient.Do(req)
- if err != nil {
- log.Fatal(err)
- }
- defer resp.Body.Close()
- b, err := io.ReadAll(resp.Body)
- if err != nil {
- log.Fatal(err)
- }
- fmt.Printf("%s", b)
- // Output:
- // "POST / HTTP/1.1\r\nHost: www.example.org\r\nAccept-Encoding: gzip\r\nContent-Length: 75\r\nUser-Agent: Go-http-client/1.1\r\n\r\nGo is a general-purpose language designed with systems programming in mind."
- }
- func ExampleDumpRequestOut() {
- const body = "Go is a general-purpose language designed with systems programming in mind."
- req, err := http.NewRequest("PUT", "http://www.example.org", strings.NewReader(body))
- if err != nil {
- log.Fatal(err)
- }
- dump, err := httputil.DumpRequestOut(req, true)
- if err != nil {
- log.Fatal(err)
- }
- fmt.Printf("%q", dump)
- // Output:
- // "PUT / HTTP/1.1\r\nHost: www.example.org\r\nUser-Agent: Go-http-client/1.1\r\nContent-Length: 75\r\nAccept-Encoding: gzip\r\n\r\nGo is a general-purpose language designed with systems programming in mind."
- }
- func ExampleDumpResponse() {
- const body = "Go is a general-purpose language designed with systems programming in mind."
- ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
- w.Header().Set("Date", "Wed, 19 Jul 1972 19:00:00 GMT")
- fmt.Fprintln(w, body)
- }))
- defer ts.Close()
- resp, err := http.Get(ts.URL)
- if err != nil {
- log.Fatal(err)
- }
- defer resp.Body.Close()
- dump, err := httputil.DumpResponse(resp, true)
- if err != nil {
- log.Fatal(err)
- }
- fmt.Printf("%q", dump)
- // Output:
- // "HTTP/1.1 200 OK\r\nContent-Length: 76\r\nContent-Type: text/plain; charset=utf-8\r\nDate: Wed, 19 Jul 1972 19:00:00 GMT\r\n\r\nGo is a general-purpose language designed with systems programming in mind.\n"
- }
- func ExampleReverseProxy() {
- backendServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
- fmt.Fprintln(w, "this call was relayed by the reverse proxy")
- }))
- defer backendServer.Close()
- rpURL, err := url.Parse(backendServer.URL)
- if err != nil {
- log.Fatal(err)
- }
- frontendProxy := httptest.NewServer(httputil.NewSingleHostReverseProxy(rpURL))
- defer frontendProxy.Close()
- resp, err := http.Get(frontendProxy.URL)
- if err != nil {
- log.Fatal(err)
- }
- b, err := io.ReadAll(resp.Body)
- if err != nil {
- log.Fatal(err)
- }
- fmt.Printf("%s", b)
- // Output:
- // this call was relayed by the reverse proxy
- }
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