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// Copyright 2013 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 http_test
import (
"bufio"
"bytes"
"crypto/tls"
"crypto/x509"
"fmt"
"io"
. "net/http"
"net/http/httptest"
"strings"
"testing"
)
func TestNextProtoUpgrade(t *testing.T) {
setParallel(t)
defer afterTest(t)
ts := httptest.NewUnstartedServer(HandlerFunc(func(w ResponseWriter, r *Request) {
fmt.Fprintf(w, "path=%s,proto=", r.URL.Path)
if r.TLS != nil {
w.Write([]byte(r.TLS.NegotiatedProtocol))
}
if r.RemoteAddr == "" {
t.Error("request with no RemoteAddr")
}
if r.Body == nil {
t.Errorf("request with nil Body")
}
}))
ts.TLS = &tls.Config{
NextProtos: []string{"unhandled-proto", "tls-0.9"},
}
ts.Config.TLSNextProto = map[string]func(*Server, *tls.Conn, Handler){
"tls-0.9": handleTLSProtocol09,
}
ts.StartTLS()
defer ts.Close()
// Normal request, without NPN.
{
c := ts.Client()
res, err := c.Get(ts.URL)
if err != nil {
t.Fatal(err)
}
body, err := io.ReadAll(res.Body)
if err != nil {
t.Fatal(err)
}
if want := "path=/,proto="; string(body) != want {
t.Errorf("plain request = %q; want %q", body, want)
}
}
// Request to an advertised but unhandled NPN protocol.
// Server will hang up.
{
certPool := x509.NewCertPool()
certPool.AddCert(ts.Certificate())
tr := &Transport{
TLSClientConfig: &tls.Config{
RootCAs: certPool,
NextProtos: []string{"unhandled-proto"},
},
}
defer tr.CloseIdleConnections()
c := &Client{
Transport: tr,
}
res, err := c.Get(ts.URL)
if err == nil {
defer res.Body.Close()
var buf bytes.Buffer
res.Write(&buf)
t.Errorf("expected error on unhandled-proto request; got: %s", buf.Bytes())
}
}
// Request using the "tls-0.9" protocol, which we register here.
// It is HTTP/0.9 over TLS.
{
c := ts.Client()
tlsConfig := c.Transport.(*Transport).TLSClientConfig
tlsConfig.NextProtos = []string{"tls-0.9"}
conn, err := tls.Dial("tcp", ts.Listener.Addr().String(), tlsConfig)
if err != nil {
t.Fatal(err)
}
conn.Write([]byte("GET /foo\n"))
body, err := io.ReadAll(conn)
if err != nil {
t.Fatal(err)
}
if want := "path=/foo,proto=tls-0.9"; string(body) != want {
t.Errorf("plain request = %q; want %q", body, want)
}
}
}
// handleTLSProtocol09 implements the HTTP/0.9 protocol over TLS, for the
// TestNextProtoUpgrade test.
func handleTLSProtocol09(srv *Server, conn *tls.Conn, h Handler) {
br := bufio.NewReader(conn)
line, err := br.ReadString('\n')
if err != nil {
return
}
line = strings.TrimSpace(line)
path := strings.TrimPrefix(line, "GET ")
if path == line {
return
}
req, _ := NewRequest("GET", path, nil)
req.Proto = "HTTP/0.9"
req.ProtoMajor = 0
req.ProtoMinor = 9
rw := &http09Writer{conn, make(Header)}
h.ServeHTTP(rw, req)
}
type http09Writer struct {
io.Writer
h Header
}
func (w http09Writer) Header() Header { return w.h }
func (w http09Writer) WriteHeader(int) {} // no headers