Source file src/pkg/net/http/doc.go

     1	// Copyright 2011 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	/*
     6	Package http provides HTTP client and server implementations.
     7	
     8	Get, Head, Post, and PostForm make HTTP requests:
     9	
    10		resp, err := http.Get("http://example.com/")
    11		...
    12		resp, err := http.Post("http://example.com/upload", "image/jpeg", &buf)
    13		...
    14		resp, err := http.PostForm("http://example.com/form",
    15			url.Values{"key": {"Value"}, "id": {"123"}})
    16	
    17	The client must close the response body when finished with it:
    18	
    19		resp, err := http.Get("http://example.com/")
    20		if err != nil {
    21			// handle error
    22		}
    23		defer resp.Body.Close()
    24		body, err := ioutil.ReadAll(resp.Body)
    25		// ...
    26	
    27	For control over HTTP client headers, redirect policy, and other
    28	settings, create a Client:
    29	
    30		client := &http.Client{
    31			CheckRedirect: redirectPolicyFunc,
    32		}
    33	
    34		resp, err := client.Get("http://example.com")
    35		// ...
    36	
    37		req, err := http.NewRequest("GET", "http://example.com", nil)
    38		// ...
    39		req.Header.Add("If-None-Match", `W/"wyzzy"`)
    40		resp, err := client.Do(req)
    41		// ...
    42	
    43	For control over proxies, TLS configuration, keep-alives,
    44	compression, and other settings, create a Transport:
    45	
    46		tr := &http.Transport{
    47			TLSClientConfig:    &tls.Config{RootCAs: pool},
    48			DisableCompression: true,
    49		}
    50		client := &http.Client{Transport: tr}
    51		resp, err := client.Get("https://example.com")
    52	
    53	Clients and Transports are safe for concurrent use by multiple
    54	goroutines and for efficiency should only be created once and re-used.
    55	
    56	ListenAndServe starts an HTTP server with a given address and handler.
    57	The handler is usually nil, which means to use DefaultServeMux.
    58	Handle and HandleFunc add handlers to DefaultServeMux:
    59	
    60		http.Handle("/foo", fooHandler)
    61	
    62		http.HandleFunc("/bar", func(w http.ResponseWriter, r *http.Request) {
    63			fmt.Fprintf(w, "Hello, %q", html.EscapeString(r.URL.Path))
    64		})
    65	
    66		log.Fatal(http.ListenAndServe(":8080", nil))
    67	
    68	More control over the server's behavior is available by creating a
    69	custom Server:
    70	
    71		s := &http.Server{
    72			Addr:           ":8080",
    73			Handler:        myHandler,
    74			ReadTimeout:    10 * time.Second,
    75			WriteTimeout:   10 * time.Second,
    76			MaxHeaderBytes: 1 << 20,
    77		}
    78		log.Fatal(s.ListenAndServe())
    79	*/
    80	package http