npn_test.go

Documentation: net/http

     1  // Copyright 2013 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 http_test
     6  
     7  import (
     8  	"bufio"
     9  	"bytes"
    10  	"crypto/tls"
    11  	"crypto/x509"
    12  	"fmt"
    13  	"io"
    14  	"io/ioutil"
    15  	. "net/http"
    16  	"net/http/httptest"
    17  	"strings"
    18  	"testing"
    19  )
    20  
    21  func TestNextProtoUpgrade(t *testing.T) {
    22  	setParallel(t)
    23  	defer afterTest(t)
    24  	ts := httptest.NewUnstartedServer(HandlerFunc(func(w ResponseWriter, r *Request) {
    25  		fmt.Fprintf(w, "path=%s,proto=", r.URL.Path)
    26  		if r.TLS != nil {
    27  			w.Write([]byte(r.TLS.NegotiatedProtocol))
    28  		}
    29  		if r.RemoteAddr == "" {
    30  			t.Error("request with no RemoteAddr")
    31  		}
    32  		if r.Body == nil {
    33  			t.Errorf("request with nil Body")
    34  		}
    35  	}))
    36  	ts.TLS = &tls.Config{
    37  		NextProtos: []string{"unhandled-proto", "tls-0.9"},
    38  	}
    39  	ts.Config.TLSNextProto = map[string]func(*Server, *tls.Conn, Handler){
    40  		"tls-0.9": handleTLSProtocol09,
    41  	}
    42  	ts.StartTLS()
    43  	defer ts.Close()
    44  
    45  	// Normal request, without NPN.
    46  	{
    47  		c := ts.Client()
    48  		res, err := c.Get(ts.URL)
    49  		if err != nil {
    50  			t.Fatal(err)
    51  		}
    52  		body, err := ioutil.ReadAll(res.Body)
    53  		if err != nil {
    54  			t.Fatal(err)
    55  		}
    56  		if want := "path=/,proto="; string(body) != want {
    57  			t.Errorf("plain request = %q; want %q", body, want)
    58  		}
    59  	}
    60  
    61  	// Request to an advertised but unhandled NPN protocol.
    62  	// Server will hang up.
    63  	{
    64  		certPool := x509.NewCertPool()
    65  		certPool.AddCert(ts.Certificate())
    66  		tr := &Transport{
    67  			TLSClientConfig: &tls.Config{
    68  				RootCAs:    certPool,
    69  				NextProtos: []string{"unhandled-proto"},
    70  			},
    71  		}
    72  		defer tr.CloseIdleConnections()
    73  		c := &Client{
    74  			Transport: tr,
    75  		}
    76  		res, err := c.Get(ts.URL)
    77  		if err == nil {
    78  			defer res.Body.Close()
    79  			var buf bytes.Buffer
    80  			res.Write(&buf)
    81  			t.Errorf("expected error on unhandled-proto request; got: %s", buf.Bytes())
    82  		}
    83  	}
    84  
    85  	// Request using the "tls-0.9" protocol, which we register here.
    86  	// It is HTTP/0.9 over TLS.
    87  	{
    88  		c := ts.Client()
    89  		tlsConfig := c.Transport.(*Transport).TLSClientConfig
    90  		tlsConfig.NextProtos = []string{"tls-0.9"}
    91  		conn, err := tls.Dial("tcp", ts.Listener.Addr().String(), tlsConfig)
    92  		if err != nil {
    93  			t.Fatal(err)
    94  		}
    95  		conn.Write([]byte("GET /foo\n"))
    96  		body, err := ioutil.ReadAll(conn)
    97  		if err != nil {
    98  			t.Fatal(err)
    99  		}
   100  		if want := "path=/foo,proto=tls-0.9"; string(body) != want {
   101  			t.Errorf("plain request = %q; want %q", body, want)
   102  		}
   103  	}
   104  }
   105  
   106  // handleTLSProtocol09 implements the HTTP/0.9 protocol over TLS, for the
   107  // TestNextProtoUpgrade test.
   108  func handleTLSProtocol09(srv *Server, conn *tls.Conn, h Handler) {
   109  	br := bufio.NewReader(conn)
   110  	line, err := br.ReadString('\n')
   111  	if err != nil {
   112  		return
   113  	}
   114  	line = strings.TrimSpace(line)
   115  	path := strings.TrimPrefix(line, "GET ")
   116  	if path == line {
   117  		return
   118  	}
   119  	req, _ := NewRequest("GET", path, nil)
   120  	req.Proto = "HTTP/0.9"
   121  	req.ProtoMajor = 0
   122  	req.ProtoMinor = 9
   123  	rw := &http09Writer{conn, make(Header)}
   124  	h.ServeHTTP(rw, req)
   125  }
   126  
   127  type http09Writer struct {
   128  	io.Writer
   129  	h Header
   130  }
   131  
   132  func (w http09Writer) Header() Header  { return w.h }
   133  func (w http09Writer) WriteHeader(int) {} // no headers
   134
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