example_test.go

Documentation: net/http/cookiejar

     1  // Copyright 2016 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  package cookiejar_test
     6  
     7  import (
     8  	"fmt"
     9  	"log"
    10  	"net/http"
    11  	"net/http/cookiejar"
    12  	"net/http/httptest"
    13  	"net/url"
    14  )
    15  
    16  func ExampleNew() {
    17  	// Start a server to give us cookies.
    18  	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    19  		if cookie, err := r.Cookie("Flavor"); err != nil {
    20  			http.SetCookie(w, &http.Cookie{Name: "Flavor", Value: "Chocolate Chip"})
    21  		} else {
    22  			cookie.Value = "Oatmeal Raisin"
    23  			http.SetCookie(w, cookie)
    24  		}
    25  	}))
    26  	defer ts.Close()
    27  
    28  	u, err := url.Parse(ts.URL)
    29  	if err != nil {
    30  		log.Fatal(err)
    31  	}
    32  
    33  	// All users of cookiejar should import "golang.org/x/net/publicsuffix"
    34  	jar, err := cookiejar.New(&cookiejar.Options{PublicSuffixList: publicsuffix.List})
    35  	if err != nil {
    36  		log.Fatal(err)
    37  	}
    38  
    39  	client := &http.Client{
    40  		Jar: jar,
    41  	}
    42  
    43  	if _, err = client.Get(u.String()); err != nil {
    44  		log.Fatal(err)
    45  	}
    46  
    47  	fmt.Println("After 1st request:")
    48  	for _, cookie := range jar.Cookies(u) {
    49  		fmt.Printf("  %s: %s\n", cookie.Name, cookie.Value)
    50  	}
    51  
    52  	if _, err = client.Get(u.String()); err != nil {
    53  		log.Fatal(err)
    54  	}
    55  
    56  	fmt.Println("After 2nd request:")
    57  	for _, cookie := range jar.Cookies(u) {
    58  		fmt.Printf("  %s: %s\n", cookie.Name, cookie.Value)
    59  	}
    60  	// Output:
    61  	// After 1st request:
    62  	//   Flavor: Chocolate Chip
    63  	// After 2nd request:
    64  	//   Flavor: Oatmeal Raisin
    65  }
    66
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