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advanced-go-programming-book/examples/golang.org/x/net/http2/transport_test.go
chai2010 3b792286a6 rename vendor examples
2018-12-15 00:26:58 +08:00

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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 http2
import (
"bufio"
"bytes"
"crypto/tls"
"errors"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"math/rand"
"net"
"net/http"
"net/http/httptest"
"net/textproto"
"net/url"
"os"
"reflect"
"runtime"
"sort"
"strconv"
"strings"
"sync"
"sync/atomic"
"testing"
"time"
"golang.org/x/net/context"
"golang.org/x/net/http2/hpack"
)
var (
extNet = flag.Bool("extnet", false, "do external network tests")
transportHost = flag.String("transporthost", "http2.golang.org", "hostname to use for TestTransport")
insecure = flag.Bool("insecure", false, "insecure TLS dials") // TODO: dead code. remove?
)
var tlsConfigInsecure = &tls.Config{InsecureSkipVerify: true}
var canceledCtx context.Context
func init() {
ctx, cancel := context.WithCancel(context.Background())
cancel()
canceledCtx = ctx
}
func TestTransportExternal(t *testing.T) {
if !*extNet {
t.Skip("skipping external network test")
}
req, _ := http.NewRequest("GET", "https://"+*transportHost+"/", nil)
rt := &Transport{TLSClientConfig: tlsConfigInsecure}
res, err := rt.RoundTrip(req)
if err != nil {
t.Fatalf("%v", err)
}
res.Write(os.Stdout)
}
type fakeTLSConn struct {
net.Conn
}
func (c *fakeTLSConn) ConnectionState() tls.ConnectionState {
return tls.ConnectionState{
Version: tls.VersionTLS12,
CipherSuite: cipher_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
}
}
func startH2cServer(t *testing.T) net.Listener {
h2Server := &Server{}
l := newLocalListener(t)
go func() {
conn, err := l.Accept()
if err != nil {
t.Error(err)
return
}
h2Server.ServeConn(&fakeTLSConn{conn}, &ServeConnOpts{Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hello, %v, http: %v", r.URL.Path, r.TLS == nil)
})})
}()
return l
}
func TestTransportH2c(t *testing.T) {
l := startH2cServer(t)
defer l.Close()
req, err := http.NewRequest("GET", "http://"+l.Addr().String()+"/foobar", nil)
if err != nil {
t.Fatal(err)
}
tr := &Transport{
AllowHTTP: true,
DialTLS: func(network, addr string, cfg *tls.Config) (net.Conn, error) {
return net.Dial(network, addr)
},
}
res, err := tr.RoundTrip(req)
if err != nil {
t.Fatal(err)
}
if res.ProtoMajor != 2 {
t.Fatal("proto not h2c")
}
body, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Fatal(err)
}
if got, want := string(body), "Hello, /foobar, http: true"; got != want {
t.Fatalf("response got %v, want %v", got, want)
}
}
func TestTransport(t *testing.T) {
const body = "sup"
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, body)
}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
req, err := http.NewRequest("GET", st.ts.URL, nil)
if err != nil {
t.Fatal(err)
}
res, err := tr.RoundTrip(req)
if err != nil {
t.Fatal(err)
}
defer res.Body.Close()
t.Logf("Got res: %+v", res)
if g, w := res.StatusCode, 200; g != w {
t.Errorf("StatusCode = %v; want %v", g, w)
}
if g, w := res.Status, "200 OK"; g != w {
t.Errorf("Status = %q; want %q", g, w)
}
wantHeader := http.Header{
"Content-Length": []string{"3"},
"Content-Type": []string{"text/plain; charset=utf-8"},
"Date": []string{"XXX"}, // see cleanDate
}
cleanDate(res)
if !reflect.DeepEqual(res.Header, wantHeader) {
t.Errorf("res Header = %v; want %v", res.Header, wantHeader)
}
if res.Request != req {
t.Errorf("Response.Request = %p; want %p", res.Request, req)
}
if res.TLS == nil {
t.Error("Response.TLS = nil; want non-nil")
}
slurp, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Errorf("Body read: %v", err)
} else if string(slurp) != body {
t.Errorf("Body = %q; want %q", slurp, body)
}
}
func onSameConn(t *testing.T, modReq func(*http.Request)) bool {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, r.RemoteAddr)
}, optOnlyServer, func(c net.Conn, st http.ConnState) {
t.Logf("conn %v is now state %v", c.RemoteAddr(), st)
})
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
get := func() string {
req, err := http.NewRequest("GET", st.ts.URL, nil)
if err != nil {
t.Fatal(err)
}
modReq(req)
res, err := tr.RoundTrip(req)
if err != nil {
t.Fatal(err)
}
defer res.Body.Close()
slurp, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Fatalf("Body read: %v", err)
}
addr := strings.TrimSpace(string(slurp))
if addr == "" {
t.Fatalf("didn't get an addr in response")
}
return addr
}
first := get()
second := get()
return first == second
}
func TestTransportReusesConns(t *testing.T) {
if !onSameConn(t, func(*http.Request) {}) {
t.Errorf("first and second responses were on different connections")
}
}
func TestTransportReusesConn_RequestClose(t *testing.T) {
if onSameConn(t, func(r *http.Request) { r.Close = true }) {
t.Errorf("first and second responses were not on different connections")
}
}
func TestTransportReusesConn_ConnClose(t *testing.T) {
if onSameConn(t, func(r *http.Request) { r.Header.Set("Connection", "close") }) {
t.Errorf("first and second responses were not on different connections")
}
}
// Tests that the Transport only keeps one pending dial open per destination address.
// https://golang.org/issue/13397
func TestTransportGroupsPendingDials(t *testing.T) {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, r.RemoteAddr)
}, optOnlyServer)
defer st.Close()
tr := &Transport{
TLSClientConfig: tlsConfigInsecure,
}
defer tr.CloseIdleConnections()
var (
mu sync.Mutex
dials = map[string]int{}
)
var wg sync.WaitGroup
for i := 0; i < 10; i++ {
wg.Add(1)
go func() {
defer wg.Done()
req, err := http.NewRequest("GET", st.ts.URL, nil)
if err != nil {
t.Error(err)
return
}
res, err := tr.RoundTrip(req)
if err != nil {
t.Error(err)
return
}
defer res.Body.Close()
slurp, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Errorf("Body read: %v", err)
}
addr := strings.TrimSpace(string(slurp))
if addr == "" {
t.Errorf("didn't get an addr in response")
}
mu.Lock()
dials[addr]++
mu.Unlock()
}()
}
wg.Wait()
if len(dials) != 1 {
t.Errorf("saw %d dials; want 1: %v", len(dials), dials)
}
tr.CloseIdleConnections()
if err := retry(50, 10*time.Millisecond, func() error {
cp, ok := tr.connPool().(*clientConnPool)
if !ok {
return fmt.Errorf("Conn pool is %T; want *clientConnPool", tr.connPool())
}
cp.mu.Lock()
defer cp.mu.Unlock()
if len(cp.dialing) != 0 {
return fmt.Errorf("dialing map = %v; want empty", cp.dialing)
}
if len(cp.conns) != 0 {
return fmt.Errorf("conns = %v; want empty", cp.conns)
}
if len(cp.keys) != 0 {
return fmt.Errorf("keys = %v; want empty", cp.keys)
}
return nil
}); err != nil {
t.Errorf("State of pool after CloseIdleConnections: %v", err)
}
}
func retry(tries int, delay time.Duration, fn func() error) error {
var err error
for i := 0; i < tries; i++ {
err = fn()
if err == nil {
return nil
}
time.Sleep(delay)
}
return err
}
func TestTransportAbortClosesPipes(t *testing.T) {
shutdown := make(chan struct{})
st := newServerTester(t,
func(w http.ResponseWriter, r *http.Request) {
w.(http.Flusher).Flush()
<-shutdown
},
optOnlyServer,
)
defer st.Close()
defer close(shutdown) // we must shutdown before st.Close() to avoid hanging
done := make(chan struct{})
requestMade := make(chan struct{})
go func() {
defer close(done)
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
req, err := http.NewRequest("GET", st.ts.URL, nil)
if err != nil {
t.Fatal(err)
}
res, err := tr.RoundTrip(req)
if err != nil {
t.Fatal(err)
}
defer res.Body.Close()
close(requestMade)
_, err = ioutil.ReadAll(res.Body)
if err == nil {
t.Error("expected error from res.Body.Read")
}
}()
<-requestMade
// Now force the serve loop to end, via closing the connection.
st.closeConn()
// deadlock? that's a bug.
select {
case <-done:
case <-time.After(3 * time.Second):
t.Fatal("timeout")
}
}
// TODO: merge this with TestTransportBody to make TestTransportRequest? This
// could be a table-driven test with extra goodies.
func TestTransportPath(t *testing.T) {
gotc := make(chan *url.URL, 1)
st := newServerTester(t,
func(w http.ResponseWriter, r *http.Request) {
gotc <- r.URL
},
optOnlyServer,
)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
const (
path = "/testpath"
query = "q=1"
)
surl := st.ts.URL + path + "?" + query
req, err := http.NewRequest("POST", surl, nil)
if err != nil {
t.Fatal(err)
}
c := &http.Client{Transport: tr}
res, err := c.Do(req)
if err != nil {
t.Fatal(err)
}
defer res.Body.Close()
got := <-gotc
if got.Path != path {
t.Errorf("Read Path = %q; want %q", got.Path, path)
}
if got.RawQuery != query {
t.Errorf("Read RawQuery = %q; want %q", got.RawQuery, query)
}
}
func randString(n int) string {
rnd := rand.New(rand.NewSource(int64(n)))
b := make([]byte, n)
for i := range b {
b[i] = byte(rnd.Intn(256))
}
return string(b)
}
type panicReader struct{}
func (panicReader) Read([]byte) (int, error) { panic("unexpected Read") }
func (panicReader) Close() error { panic("unexpected Close") }
func TestActualContentLength(t *testing.T) {
tests := []struct {
req *http.Request
want int64
}{
// Verify we don't read from Body:
0: {
req: &http.Request{Body: panicReader{}},
want: -1,
},
// nil Body means 0, regardless of ContentLength:
1: {
req: &http.Request{Body: nil, ContentLength: 5},
want: 0,
},
// ContentLength is used if set.
2: {
req: &http.Request{Body: panicReader{}, ContentLength: 5},
want: 5,
},
// http.NoBody means 0, not -1.
3: {
req: &http.Request{Body: go18httpNoBody()},
want: 0,
},
}
for i, tt := range tests {
got := actualContentLength(tt.req)
if got != tt.want {
t.Errorf("test[%d]: got %d; want %d", i, got, tt.want)
}
}
}
func TestTransportBody(t *testing.T) {
bodyTests := []struct {
body string
noContentLen bool
}{
{body: "some message"},
{body: "some message", noContentLen: true},
{body: strings.Repeat("a", 1<<20), noContentLen: true},
{body: strings.Repeat("a", 1<<20)},
{body: randString(16<<10 - 1)},
{body: randString(16 << 10)},
{body: randString(16<<10 + 1)},
{body: randString(512<<10 - 1)},
{body: randString(512 << 10)},
{body: randString(512<<10 + 1)},
{body: randString(1<<20 - 1)},
{body: randString(1 << 20)},
{body: randString(1<<20 + 2)},
}
type reqInfo struct {
req *http.Request
slurp []byte
err error
}
gotc := make(chan reqInfo, 1)
st := newServerTester(t,
func(w http.ResponseWriter, r *http.Request) {
slurp, err := ioutil.ReadAll(r.Body)
if err != nil {
gotc <- reqInfo{err: err}
} else {
gotc <- reqInfo{req: r, slurp: slurp}
}
},
optOnlyServer,
)
defer st.Close()
for i, tt := range bodyTests {
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
var body io.Reader = strings.NewReader(tt.body)
if tt.noContentLen {
body = struct{ io.Reader }{body} // just a Reader, hiding concrete type and other methods
}
req, err := http.NewRequest("POST", st.ts.URL, body)
if err != nil {
t.Fatalf("#%d: %v", i, err)
}
c := &http.Client{Transport: tr}
res, err := c.Do(req)
if err != nil {
t.Fatalf("#%d: %v", i, err)
}
defer res.Body.Close()
ri := <-gotc
if ri.err != nil {
t.Errorf("#%d: read error: %v", i, ri.err)
continue
}
if got := string(ri.slurp); got != tt.body {
t.Errorf("#%d: Read body mismatch.\n got: %q (len %d)\nwant: %q (len %d)", i, shortString(got), len(got), shortString(tt.body), len(tt.body))
}
wantLen := int64(len(tt.body))
if tt.noContentLen && tt.body != "" {
wantLen = -1
}
if ri.req.ContentLength != wantLen {
t.Errorf("#%d. handler got ContentLength = %v; want %v", i, ri.req.ContentLength, wantLen)
}
}
}
func shortString(v string) string {
const maxLen = 100
if len(v) <= maxLen {
return v
}
return fmt.Sprintf("%v[...%d bytes omitted...]%v", v[:maxLen/2], len(v)-maxLen, v[len(v)-maxLen/2:])
}
func TestTransportDialTLS(t *testing.T) {
var mu sync.Mutex // guards following
var gotReq, didDial bool
ts := newServerTester(t,
func(w http.ResponseWriter, r *http.Request) {
mu.Lock()
gotReq = true
mu.Unlock()
},
optOnlyServer,
)
defer ts.Close()
tr := &Transport{
DialTLS: func(netw, addr string, cfg *tls.Config) (net.Conn, error) {
mu.Lock()
didDial = true
mu.Unlock()
cfg.InsecureSkipVerify = true
c, err := tls.Dial(netw, addr, cfg)
if err != nil {
return nil, err
}
return c, c.Handshake()
},
}
defer tr.CloseIdleConnections()
client := &http.Client{Transport: tr}
res, err := client.Get(ts.ts.URL)
if err != nil {
t.Fatal(err)
}
res.Body.Close()
mu.Lock()
if !gotReq {
t.Error("didn't get request")
}
if !didDial {
t.Error("didn't use dial hook")
}
}
func TestConfigureTransport(t *testing.T) {
t1 := &http.Transport{}
err := ConfigureTransport(t1)
if err == errTransportVersion {
t.Skip(err)
}
if err != nil {
t.Fatal(err)
}
if got := fmt.Sprintf("%#v", t1); !strings.Contains(got, `"h2"`) {
// Laziness, to avoid buildtags.
t.Errorf("stringification of HTTP/1 transport didn't contain \"h2\": %v", got)
}
wantNextProtos := []string{"h2", "http/1.1"}
if t1.TLSClientConfig == nil {
t.Errorf("nil t1.TLSClientConfig")
} else if !reflect.DeepEqual(t1.TLSClientConfig.NextProtos, wantNextProtos) {
t.Errorf("TLSClientConfig.NextProtos = %q; want %q", t1.TLSClientConfig.NextProtos, wantNextProtos)
}
if err := ConfigureTransport(t1); err == nil {
t.Error("unexpected success on second call to ConfigureTransport")
}
// And does it work?
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, r.Proto)
}, optOnlyServer)
defer st.Close()
t1.TLSClientConfig.InsecureSkipVerify = true
c := &http.Client{Transport: t1}
res, err := c.Get(st.ts.URL)
if err != nil {
t.Fatal(err)
}
slurp, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Fatal(err)
}
if got, want := string(slurp), "HTTP/2.0"; got != want {
t.Errorf("body = %q; want %q", got, want)
}
}
type capitalizeReader struct {
r io.Reader
}
func (cr capitalizeReader) Read(p []byte) (n int, err error) {
n, err = cr.r.Read(p)
for i, b := range p[:n] {
if b >= 'a' && b <= 'z' {
p[i] = b - ('a' - 'A')
}
}
return
}
type flushWriter struct {
w io.Writer
}
func (fw flushWriter) Write(p []byte) (n int, err error) {
n, err = fw.w.Write(p)
if f, ok := fw.w.(http.Flusher); ok {
f.Flush()
}
return
}
type clientTester struct {
t *testing.T
tr *Transport
sc, cc net.Conn // server and client conn
fr *Framer // server's framer
client func() error
server func() error
}
func newClientTester(t *testing.T) *clientTester {
var dialOnce struct {
sync.Mutex
dialed bool
}
ct := &clientTester{
t: t,
}
ct.tr = &Transport{
TLSClientConfig: tlsConfigInsecure,
DialTLS: func(network, addr string, cfg *tls.Config) (net.Conn, error) {
dialOnce.Lock()
defer dialOnce.Unlock()
if dialOnce.dialed {
return nil, errors.New("only one dial allowed in test mode")
}
dialOnce.dialed = true
return ct.cc, nil
},
}
ln := newLocalListener(t)
cc, err := net.Dial("tcp", ln.Addr().String())
if err != nil {
t.Fatal(err)
}
sc, err := ln.Accept()
if err != nil {
t.Fatal(err)
}
ln.Close()
ct.cc = cc
ct.sc = sc
ct.fr = NewFramer(sc, sc)
return ct
}
func newLocalListener(t *testing.T) net.Listener {
ln, err := net.Listen("tcp4", "127.0.0.1:0")
if err == nil {
return ln
}
ln, err = net.Listen("tcp6", "[::1]:0")
if err != nil {
t.Fatal(err)
}
return ln
}
func (ct *clientTester) greet(settings ...Setting) {
buf := make([]byte, len(ClientPreface))
_, err := io.ReadFull(ct.sc, buf)
if err != nil {
ct.t.Fatalf("reading client preface: %v", err)
}
f, err := ct.fr.ReadFrame()
if err != nil {
ct.t.Fatalf("Reading client settings frame: %v", err)
}
if sf, ok := f.(*SettingsFrame); !ok {
ct.t.Fatalf("Wanted client settings frame; got %v", f)
_ = sf // stash it away?
}
if err := ct.fr.WriteSettings(settings...); err != nil {
ct.t.Fatal(err)
}
if err := ct.fr.WriteSettingsAck(); err != nil {
ct.t.Fatal(err)
}
}
func (ct *clientTester) readNonSettingsFrame() (Frame, error) {
for {
f, err := ct.fr.ReadFrame()
if err != nil {
return nil, err
}
if _, ok := f.(*SettingsFrame); ok {
continue
}
return f, nil
}
}
func (ct *clientTester) cleanup() {
ct.tr.CloseIdleConnections()
}
func (ct *clientTester) run() {
errc := make(chan error, 2)
ct.start("client", errc, ct.client)
ct.start("server", errc, ct.server)
defer ct.cleanup()
for i := 0; i < 2; i++ {
if err := <-errc; err != nil {
ct.t.Error(err)
return
}
}
}
func (ct *clientTester) start(which string, errc chan<- error, fn func() error) {
go func() {
finished := false
var err error
defer func() {
if !finished {
err = fmt.Errorf("%s goroutine didn't finish.", which)
} else if err != nil {
err = fmt.Errorf("%s: %v", which, err)
}
errc <- err
}()
err = fn()
finished = true
}()
}
func (ct *clientTester) readFrame() (Frame, error) {
return readFrameTimeout(ct.fr, 2*time.Second)
}
func (ct *clientTester) firstHeaders() (*HeadersFrame, error) {
for {
f, err := ct.readFrame()
if err != nil {
return nil, fmt.Errorf("ReadFrame while waiting for Headers: %v", err)
}
switch f.(type) {
case *WindowUpdateFrame, *SettingsFrame:
continue
}
hf, ok := f.(*HeadersFrame)
if !ok {
return nil, fmt.Errorf("Got %T; want HeadersFrame", f)
}
return hf, nil
}
}
type countingReader struct {
n *int64
}
func (r countingReader) Read(p []byte) (n int, err error) {
for i := range p {
p[i] = byte(i)
}
atomic.AddInt64(r.n, int64(len(p)))
return len(p), err
}
func TestTransportReqBodyAfterResponse_200(t *testing.T) { testTransportReqBodyAfterResponse(t, 200) }
func TestTransportReqBodyAfterResponse_403(t *testing.T) { testTransportReqBodyAfterResponse(t, 403) }
func testTransportReqBodyAfterResponse(t *testing.T, status int) {
const bodySize = 10 << 20
clientDone := make(chan struct{})
ct := newClientTester(t)
ct.client = func() error {
defer ct.cc.(*net.TCPConn).CloseWrite()
defer close(clientDone)
var n int64 // atomic
req, err := http.NewRequest("PUT", "https://dummy.tld/", io.LimitReader(countingReader{&n}, bodySize))
if err != nil {
return err
}
res, err := ct.tr.RoundTrip(req)
if err != nil {
return fmt.Errorf("RoundTrip: %v", err)
}
defer res.Body.Close()
if res.StatusCode != status {
return fmt.Errorf("status code = %v; want %v", res.StatusCode, status)
}
slurp, err := ioutil.ReadAll(res.Body)
if err != nil {
return fmt.Errorf("Slurp: %v", err)
}
if len(slurp) > 0 {
return fmt.Errorf("unexpected body: %q", slurp)
}
if status == 200 {
if got := atomic.LoadInt64(&n); got != bodySize {
return fmt.Errorf("For 200 response, Transport wrote %d bytes; want %d", got, bodySize)
}
} else {
if got := atomic.LoadInt64(&n); got == 0 || got >= bodySize {
return fmt.Errorf("For %d response, Transport wrote %d bytes; want (0,%d) exclusive", status, got, bodySize)
}
}
return nil
}
ct.server = func() error {
ct.greet()
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
var dataRecv int64
var closed bool
for {
f, err := ct.fr.ReadFrame()
if err != nil {
select {
case <-clientDone:
// If the client's done, it
// will have reported any
// errors on its side.
return nil
default:
return err
}
}
//println(fmt.Sprintf("server got frame: %v", f))
switch f := f.(type) {
case *WindowUpdateFrame, *SettingsFrame:
case *HeadersFrame:
if !f.HeadersEnded() {
return fmt.Errorf("headers should have END_HEADERS be ended: %v", f)
}
if f.StreamEnded() {
return fmt.Errorf("headers contains END_STREAM unexpectedly: %v", f)
}
case *DataFrame:
dataLen := len(f.Data())
if dataLen > 0 {
if dataRecv == 0 {
enc.WriteField(hpack.HeaderField{Name: ":status", Value: strconv.Itoa(status)})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.StreamID,
EndHeaders: true,
EndStream: false,
BlockFragment: buf.Bytes(),
})
}
if err := ct.fr.WriteWindowUpdate(0, uint32(dataLen)); err != nil {
return err
}
if err := ct.fr.WriteWindowUpdate(f.StreamID, uint32(dataLen)); err != nil {
return err
}
}
dataRecv += int64(dataLen)
if !closed && ((status != 200 && dataRecv > 0) ||
(status == 200 && dataRecv == bodySize)) {
closed = true
if err := ct.fr.WriteData(f.StreamID, true, nil); err != nil {
return err
}
}
default:
return fmt.Errorf("Unexpected client frame %v", f)
}
}
}
ct.run()
}
// See golang.org/issue/13444
func TestTransportFullDuplex(t *testing.T) {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(200) // redundant but for clarity
w.(http.Flusher).Flush()
io.Copy(flushWriter{w}, capitalizeReader{r.Body})
fmt.Fprintf(w, "bye.\n")
}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
c := &http.Client{Transport: tr}
pr, pw := io.Pipe()
req, err := http.NewRequest("PUT", st.ts.URL, ioutil.NopCloser(pr))
if err != nil {
t.Fatal(err)
}
req.ContentLength = -1
res, err := c.Do(req)
if err != nil {
t.Fatal(err)
}
defer res.Body.Close()
if res.StatusCode != 200 {
t.Fatalf("StatusCode = %v; want %v", res.StatusCode, 200)
}
bs := bufio.NewScanner(res.Body)
want := func(v string) {
if !bs.Scan() {
t.Fatalf("wanted to read %q but Scan() = false, err = %v", v, bs.Err())
}
}
write := func(v string) {
_, err := io.WriteString(pw, v)
if err != nil {
t.Fatalf("pipe write: %v", err)
}
}
write("foo\n")
want("FOO")
write("bar\n")
want("BAR")
pw.Close()
want("bye.")
if err := bs.Err(); err != nil {
t.Fatal(err)
}
}
func TestTransportConnectRequest(t *testing.T) {
gotc := make(chan *http.Request, 1)
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
gotc <- r
}, optOnlyServer)
defer st.Close()
u, err := url.Parse(st.ts.URL)
if err != nil {
t.Fatal(err)
}
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
c := &http.Client{Transport: tr}
tests := []struct {
req *http.Request
want string
}{
{
req: &http.Request{
Method: "CONNECT",
Header: http.Header{},
URL: u,
},
want: u.Host,
},
{
req: &http.Request{
Method: "CONNECT",
Header: http.Header{},
URL: u,
Host: "example.com:123",
},
want: "example.com:123",
},
}
for i, tt := range tests {
res, err := c.Do(tt.req)
if err != nil {
t.Errorf("%d. RoundTrip = %v", i, err)
continue
}
res.Body.Close()
req := <-gotc
if req.Method != "CONNECT" {
t.Errorf("method = %q; want CONNECT", req.Method)
}
if req.Host != tt.want {
t.Errorf("Host = %q; want %q", req.Host, tt.want)
}
if req.URL.Host != tt.want {
t.Errorf("URL.Host = %q; want %q", req.URL.Host, tt.want)
}
}
}
type headerType int
const (
noHeader headerType = iota // omitted
oneHeader
splitHeader // broken into continuation on purpose
)
const (
f0 = noHeader
f1 = oneHeader
f2 = splitHeader
d0 = false
d1 = true
)
// Test all 36 combinations of response frame orders:
// (3 ways of 100-continue) * (2 ways of headers) * (2 ways of data) * (3 ways of trailers):func TestTransportResponsePattern_00f0(t *testing.T) { testTransportResponsePattern(h0, h1, false, h0) }
// Generated by http://play.golang.org/p/SScqYKJYXd
func TestTransportResPattern_c0h1d0t0(t *testing.T) { testTransportResPattern(t, f0, f1, d0, f0) }
func TestTransportResPattern_c0h1d0t1(t *testing.T) { testTransportResPattern(t, f0, f1, d0, f1) }
func TestTransportResPattern_c0h1d0t2(t *testing.T) { testTransportResPattern(t, f0, f1, d0, f2) }
func TestTransportResPattern_c0h1d1t0(t *testing.T) { testTransportResPattern(t, f0, f1, d1, f0) }
func TestTransportResPattern_c0h1d1t1(t *testing.T) { testTransportResPattern(t, f0, f1, d1, f1) }
func TestTransportResPattern_c0h1d1t2(t *testing.T) { testTransportResPattern(t, f0, f1, d1, f2) }
func TestTransportResPattern_c0h2d0t0(t *testing.T) { testTransportResPattern(t, f0, f2, d0, f0) }
func TestTransportResPattern_c0h2d0t1(t *testing.T) { testTransportResPattern(t, f0, f2, d0, f1) }
func TestTransportResPattern_c0h2d0t2(t *testing.T) { testTransportResPattern(t, f0, f2, d0, f2) }
func TestTransportResPattern_c0h2d1t0(t *testing.T) { testTransportResPattern(t, f0, f2, d1, f0) }
func TestTransportResPattern_c0h2d1t1(t *testing.T) { testTransportResPattern(t, f0, f2, d1, f1) }
func TestTransportResPattern_c0h2d1t2(t *testing.T) { testTransportResPattern(t, f0, f2, d1, f2) }
func TestTransportResPattern_c1h1d0t0(t *testing.T) { testTransportResPattern(t, f1, f1, d0, f0) }
func TestTransportResPattern_c1h1d0t1(t *testing.T) { testTransportResPattern(t, f1, f1, d0, f1) }
func TestTransportResPattern_c1h1d0t2(t *testing.T) { testTransportResPattern(t, f1, f1, d0, f2) }
func TestTransportResPattern_c1h1d1t0(t *testing.T) { testTransportResPattern(t, f1, f1, d1, f0) }
func TestTransportResPattern_c1h1d1t1(t *testing.T) { testTransportResPattern(t, f1, f1, d1, f1) }
func TestTransportResPattern_c1h1d1t2(t *testing.T) { testTransportResPattern(t, f1, f1, d1, f2) }
func TestTransportResPattern_c1h2d0t0(t *testing.T) { testTransportResPattern(t, f1, f2, d0, f0) }
func TestTransportResPattern_c1h2d0t1(t *testing.T) { testTransportResPattern(t, f1, f2, d0, f1) }
func TestTransportResPattern_c1h2d0t2(t *testing.T) { testTransportResPattern(t, f1, f2, d0, f2) }
func TestTransportResPattern_c1h2d1t0(t *testing.T) { testTransportResPattern(t, f1, f2, d1, f0) }
func TestTransportResPattern_c1h2d1t1(t *testing.T) { testTransportResPattern(t, f1, f2, d1, f1) }
func TestTransportResPattern_c1h2d1t2(t *testing.T) { testTransportResPattern(t, f1, f2, d1, f2) }
func TestTransportResPattern_c2h1d0t0(t *testing.T) { testTransportResPattern(t, f2, f1, d0, f0) }
func TestTransportResPattern_c2h1d0t1(t *testing.T) { testTransportResPattern(t, f2, f1, d0, f1) }
func TestTransportResPattern_c2h1d0t2(t *testing.T) { testTransportResPattern(t, f2, f1, d0, f2) }
func TestTransportResPattern_c2h1d1t0(t *testing.T) { testTransportResPattern(t, f2, f1, d1, f0) }
func TestTransportResPattern_c2h1d1t1(t *testing.T) { testTransportResPattern(t, f2, f1, d1, f1) }
func TestTransportResPattern_c2h1d1t2(t *testing.T) { testTransportResPattern(t, f2, f1, d1, f2) }
func TestTransportResPattern_c2h2d0t0(t *testing.T) { testTransportResPattern(t, f2, f2, d0, f0) }
func TestTransportResPattern_c2h2d0t1(t *testing.T) { testTransportResPattern(t, f2, f2, d0, f1) }
func TestTransportResPattern_c2h2d0t2(t *testing.T) { testTransportResPattern(t, f2, f2, d0, f2) }
func TestTransportResPattern_c2h2d1t0(t *testing.T) { testTransportResPattern(t, f2, f2, d1, f0) }
func TestTransportResPattern_c2h2d1t1(t *testing.T) { testTransportResPattern(t, f2, f2, d1, f1) }
func TestTransportResPattern_c2h2d1t2(t *testing.T) { testTransportResPattern(t, f2, f2, d1, f2) }
func testTransportResPattern(t *testing.T, expect100Continue, resHeader headerType, withData bool, trailers headerType) {
const reqBody = "some request body"
const resBody = "some response body"
if resHeader == noHeader {
// TODO: test 100-continue followed by immediate
// server stream reset, without headers in the middle?
panic("invalid combination")
}
ct := newClientTester(t)
ct.client = func() error {
req, _ := http.NewRequest("POST", "https://dummy.tld/", strings.NewReader(reqBody))
if expect100Continue != noHeader {
req.Header.Set("Expect", "100-continue")
}
res, err := ct.tr.RoundTrip(req)
if err != nil {
return fmt.Errorf("RoundTrip: %v", err)
}
defer res.Body.Close()
if res.StatusCode != 200 {
return fmt.Errorf("status code = %v; want 200", res.StatusCode)
}
slurp, err := ioutil.ReadAll(res.Body)
if err != nil {
return fmt.Errorf("Slurp: %v", err)
}
wantBody := resBody
if !withData {
wantBody = ""
}
if string(slurp) != wantBody {
return fmt.Errorf("body = %q; want %q", slurp, wantBody)
}
if trailers == noHeader {
if len(res.Trailer) > 0 {
t.Errorf("Trailer = %v; want none", res.Trailer)
}
} else {
want := http.Header{"Some-Trailer": {"some-value"}}
if !reflect.DeepEqual(res.Trailer, want) {
t.Errorf("Trailer = %v; want %v", res.Trailer, want)
}
}
return nil
}
ct.server = func() error {
ct.greet()
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
for {
f, err := ct.fr.ReadFrame()
if err != nil {
return err
}
endStream := false
send := func(mode headerType) {
hbf := buf.Bytes()
switch mode {
case oneHeader:
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.Header().StreamID,
EndHeaders: true,
EndStream: endStream,
BlockFragment: hbf,
})
case splitHeader:
if len(hbf) < 2 {
panic("too small")
}
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.Header().StreamID,
EndHeaders: false,
EndStream: endStream,
BlockFragment: hbf[:1],
})
ct.fr.WriteContinuation(f.Header().StreamID, true, hbf[1:])
default:
panic("bogus mode")
}
}
switch f := f.(type) {
case *WindowUpdateFrame, *SettingsFrame:
case *DataFrame:
if !f.StreamEnded() {
// No need to send flow control tokens. The test request body is tiny.
continue
}
// Response headers (1+ frames; 1 or 2 in this test, but never 0)
{
buf.Reset()
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
enc.WriteField(hpack.HeaderField{Name: "x-foo", Value: "blah"})
enc.WriteField(hpack.HeaderField{Name: "x-bar", Value: "more"})
if trailers != noHeader {
enc.WriteField(hpack.HeaderField{Name: "trailer", Value: "some-trailer"})
}
endStream = withData == false && trailers == noHeader
send(resHeader)
}
if withData {
endStream = trailers == noHeader
ct.fr.WriteData(f.StreamID, endStream, []byte(resBody))
}
if trailers != noHeader {
endStream = true
buf.Reset()
enc.WriteField(hpack.HeaderField{Name: "some-trailer", Value: "some-value"})
send(trailers)
}
if endStream {
return nil
}
case *HeadersFrame:
if expect100Continue != noHeader {
buf.Reset()
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "100"})
send(expect100Continue)
}
}
}
}
ct.run()
}
// Issue 26189, Issue 17739: ignore unknown 1xx responses
func TestTransportUnknown1xx(t *testing.T) {
var buf bytes.Buffer
defer func() { got1xxFuncForTests = nil }()
got1xxFuncForTests = func(code int, header textproto.MIMEHeader) error {
fmt.Fprintf(&buf, "code=%d header=%v\n", code, header)
return nil
}
ct := newClientTester(t)
ct.client = func() error {
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
res, err := ct.tr.RoundTrip(req)
if err != nil {
return fmt.Errorf("RoundTrip: %v", err)
}
defer res.Body.Close()
if res.StatusCode != 204 {
return fmt.Errorf("status code = %v; want 204", res.StatusCode)
}
want := `code=110 header=map[Foo-Bar:[110]]
code=111 header=map[Foo-Bar:[111]]
code=112 header=map[Foo-Bar:[112]]
code=113 header=map[Foo-Bar:[113]]
code=114 header=map[Foo-Bar:[114]]
`
if got := buf.String(); got != want {
t.Errorf("Got trace:\n%s\nWant:\n%s", got, want)
}
return nil
}
ct.server = func() error {
ct.greet()
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
for {
f, err := ct.fr.ReadFrame()
if err != nil {
return err
}
switch f := f.(type) {
case *WindowUpdateFrame, *SettingsFrame:
case *HeadersFrame:
for i := 110; i <= 114; i++ {
buf.Reset()
enc.WriteField(hpack.HeaderField{Name: ":status", Value: fmt.Sprint(i)})
enc.WriteField(hpack.HeaderField{Name: "foo-bar", Value: fmt.Sprint(i)})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.StreamID,
EndHeaders: true,
EndStream: false,
BlockFragment: buf.Bytes(),
})
}
buf.Reset()
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "204"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.StreamID,
EndHeaders: true,
EndStream: false,
BlockFragment: buf.Bytes(),
})
return nil
}
}
}
ct.run()
}
func TestTransportReceiveUndeclaredTrailer(t *testing.T) {
ct := newClientTester(t)
ct.client = func() error {
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
res, err := ct.tr.RoundTrip(req)
if err != nil {
return fmt.Errorf("RoundTrip: %v", err)
}
defer res.Body.Close()
if res.StatusCode != 200 {
return fmt.Errorf("status code = %v; want 200", res.StatusCode)
}
slurp, err := ioutil.ReadAll(res.Body)
if err != nil {
return fmt.Errorf("res.Body ReadAll error = %q, %v; want %v", slurp, err, nil)
}
if len(slurp) > 0 {
return fmt.Errorf("body = %q; want nothing", slurp)
}
if _, ok := res.Trailer["Some-Trailer"]; !ok {
return fmt.Errorf("expected Some-Trailer")
}
return nil
}
ct.server = func() error {
ct.greet()
var n int
var hf *HeadersFrame
for hf == nil && n < 10 {
f, err := ct.fr.ReadFrame()
if err != nil {
return err
}
hf, _ = f.(*HeadersFrame)
n++
}
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
// send headers without Trailer header
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: hf.StreamID,
EndHeaders: true,
EndStream: false,
BlockFragment: buf.Bytes(),
})
// send trailers
buf.Reset()
enc.WriteField(hpack.HeaderField{Name: "some-trailer", Value: "I'm an undeclared Trailer!"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: hf.StreamID,
EndHeaders: true,
EndStream: true,
BlockFragment: buf.Bytes(),
})
return nil
}
ct.run()
}
func TestTransportInvalidTrailer_Pseudo1(t *testing.T) {
testTransportInvalidTrailer_Pseudo(t, oneHeader)
}
func TestTransportInvalidTrailer_Pseudo2(t *testing.T) {
testTransportInvalidTrailer_Pseudo(t, splitHeader)
}
func testTransportInvalidTrailer_Pseudo(t *testing.T, trailers headerType) {
testInvalidTrailer(t, trailers, pseudoHeaderError(":colon"), func(enc *hpack.Encoder) {
enc.WriteField(hpack.HeaderField{Name: ":colon", Value: "foo"})
enc.WriteField(hpack.HeaderField{Name: "foo", Value: "bar"})
})
}
func TestTransportInvalidTrailer_Capital1(t *testing.T) {
testTransportInvalidTrailer_Capital(t, oneHeader)
}
func TestTransportInvalidTrailer_Capital2(t *testing.T) {
testTransportInvalidTrailer_Capital(t, splitHeader)
}
func testTransportInvalidTrailer_Capital(t *testing.T, trailers headerType) {
testInvalidTrailer(t, trailers, headerFieldNameError("Capital"), func(enc *hpack.Encoder) {
enc.WriteField(hpack.HeaderField{Name: "foo", Value: "bar"})
enc.WriteField(hpack.HeaderField{Name: "Capital", Value: "bad"})
})
}
func TestTransportInvalidTrailer_EmptyFieldName(t *testing.T) {
testInvalidTrailer(t, oneHeader, headerFieldNameError(""), func(enc *hpack.Encoder) {
enc.WriteField(hpack.HeaderField{Name: "", Value: "bad"})
})
}
func TestTransportInvalidTrailer_BinaryFieldValue(t *testing.T) {
testInvalidTrailer(t, oneHeader, headerFieldValueError("has\nnewline"), func(enc *hpack.Encoder) {
enc.WriteField(hpack.HeaderField{Name: "x", Value: "has\nnewline"})
})
}
func testInvalidTrailer(t *testing.T, trailers headerType, wantErr error, writeTrailer func(*hpack.Encoder)) {
ct := newClientTester(t)
ct.client = func() error {
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
res, err := ct.tr.RoundTrip(req)
if err != nil {
return fmt.Errorf("RoundTrip: %v", err)
}
defer res.Body.Close()
if res.StatusCode != 200 {
return fmt.Errorf("status code = %v; want 200", res.StatusCode)
}
slurp, err := ioutil.ReadAll(res.Body)
se, ok := err.(StreamError)
if !ok || se.Cause != wantErr {
return fmt.Errorf("res.Body ReadAll error = %q, %#v; want StreamError with cause %T, %#v", slurp, err, wantErr, wantErr)
}
if len(slurp) > 0 {
return fmt.Errorf("body = %q; want nothing", slurp)
}
return nil
}
ct.server = func() error {
ct.greet()
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
for {
f, err := ct.fr.ReadFrame()
if err != nil {
return err
}
switch f := f.(type) {
case *HeadersFrame:
var endStream bool
send := func(mode headerType) {
hbf := buf.Bytes()
switch mode {
case oneHeader:
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.StreamID,
EndHeaders: true,
EndStream: endStream,
BlockFragment: hbf,
})
case splitHeader:
if len(hbf) < 2 {
panic("too small")
}
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.StreamID,
EndHeaders: false,
EndStream: endStream,
BlockFragment: hbf[:1],
})
ct.fr.WriteContinuation(f.StreamID, true, hbf[1:])
default:
panic("bogus mode")
}
}
// Response headers (1+ frames; 1 or 2 in this test, but never 0)
{
buf.Reset()
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
enc.WriteField(hpack.HeaderField{Name: "trailer", Value: "declared"})
endStream = false
send(oneHeader)
}
// Trailers:
{
endStream = true
buf.Reset()
writeTrailer(enc)
send(trailers)
}
return nil
}
}
}
ct.run()
}
// headerListSize returns the HTTP2 header list size of h.
// http://httpwg.org/specs/rfc7540.html#SETTINGS_MAX_HEADER_LIST_SIZE
// http://httpwg.org/specs/rfc7540.html#MaxHeaderBlock
func headerListSize(h http.Header) (size uint32) {
for k, vv := range h {
for _, v := range vv {
hf := hpack.HeaderField{Name: k, Value: v}
size += hf.Size()
}
}
return size
}
// padHeaders adds data to an http.Header until headerListSize(h) ==
// limit. Due to the way header list sizes are calculated, padHeaders
// cannot add fewer than len("Pad-Headers") + 32 bytes to h, and will
// call t.Fatal if asked to do so. PadHeaders first reserves enough
// space for an empty "Pad-Headers" key, then adds as many copies of
// filler as possible. Any remaining bytes necessary to push the
// header list size up to limit are added to h["Pad-Headers"].
func padHeaders(t *testing.T, h http.Header, limit uint64, filler string) {
if limit > 0xffffffff {
t.Fatalf("padHeaders: refusing to pad to more than 2^32-1 bytes. limit = %v", limit)
}
hf := hpack.HeaderField{Name: "Pad-Headers", Value: ""}
minPadding := uint64(hf.Size())
size := uint64(headerListSize(h))
minlimit := size + minPadding
if limit < minlimit {
t.Fatalf("padHeaders: limit %v < %v", limit, minlimit)
}
// Use a fixed-width format for name so that fieldSize
// remains constant.
nameFmt := "Pad-Headers-%06d"
hf = hpack.HeaderField{Name: fmt.Sprintf(nameFmt, 1), Value: filler}
fieldSize := uint64(hf.Size())
// Add as many complete filler values as possible, leaving
// room for at least one empty "Pad-Headers" key.
limit = limit - minPadding
for i := 0; size+fieldSize < limit; i++ {
name := fmt.Sprintf(nameFmt, i)
h.Add(name, filler)
size += fieldSize
}
// Add enough bytes to reach limit.
remain := limit - size
lastValue := strings.Repeat("*", int(remain))
h.Add("Pad-Headers", lastValue)
}
func TestPadHeaders(t *testing.T) {
check := func(h http.Header, limit uint32, fillerLen int) {
if h == nil {
h = make(http.Header)
}
filler := strings.Repeat("f", fillerLen)
padHeaders(t, h, uint64(limit), filler)
gotSize := headerListSize(h)
if gotSize != limit {
t.Errorf("Got size = %v; want %v", gotSize, limit)
}
}
// Try all possible combinations for small fillerLen and limit.
hf := hpack.HeaderField{Name: "Pad-Headers", Value: ""}
minLimit := hf.Size()
for limit := minLimit; limit <= 128; limit++ {
for fillerLen := 0; uint32(fillerLen) <= limit; fillerLen++ {
check(nil, limit, fillerLen)
}
}
// Try a few tests with larger limits, plus cumulative
// tests. Since these tests are cumulative, tests[i+1].limit
// must be >= tests[i].limit + minLimit. See the comment on
// padHeaders for more info on why the limit arg has this
// restriction.
tests := []struct {
fillerLen int
limit uint32
}{
{
fillerLen: 64,
limit: 1024,
},
{
fillerLen: 1024,
limit: 1286,
},
{
fillerLen: 256,
limit: 2048,
},
{
fillerLen: 1024,
limit: 10 * 1024,
},
{
fillerLen: 1023,
limit: 11 * 1024,
},
}
h := make(http.Header)
for _, tc := range tests {
check(nil, tc.limit, tc.fillerLen)
check(h, tc.limit, tc.fillerLen)
}
}
func TestTransportChecksRequestHeaderListSize(t *testing.T) {
st := newServerTester(t,
func(w http.ResponseWriter, r *http.Request) {
// Consume body & force client to send
// trailers before writing response.
// ioutil.ReadAll returns non-nil err for
// requests that attempt to send greater than
// maxHeaderListSize bytes of trailers, since
// those requests generate a stream reset.
ioutil.ReadAll(r.Body)
r.Body.Close()
},
func(ts *httptest.Server) {
ts.Config.MaxHeaderBytes = 16 << 10
},
optOnlyServer,
optQuiet,
)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
checkRoundTrip := func(req *http.Request, wantErr error, desc string) {
res, err := tr.RoundTrip(req)
if err != wantErr {
if res != nil {
res.Body.Close()
}
t.Errorf("%v: RoundTrip err = %v; want %v", desc, err, wantErr)
return
}
if err == nil {
if res == nil {
t.Errorf("%v: response nil; want non-nil.", desc)
return
}
defer res.Body.Close()
if res.StatusCode != http.StatusOK {
t.Errorf("%v: response status = %v; want %v", desc, res.StatusCode, http.StatusOK)
}
return
}
if res != nil {
t.Errorf("%v: RoundTrip err = %v but response non-nil", desc, err)
}
}
headerListSizeForRequest := func(req *http.Request) (size uint64) {
contentLen := actualContentLength(req)
trailers, err := commaSeparatedTrailers(req)
if err != nil {
t.Fatalf("headerListSizeForRequest: %v", err)
}
cc := &ClientConn{peerMaxHeaderListSize: 0xffffffffffffffff}
cc.henc = hpack.NewEncoder(&cc.hbuf)
cc.mu.Lock()
hdrs, err := cc.encodeHeaders(req, true, trailers, contentLen)
cc.mu.Unlock()
if err != nil {
t.Fatalf("headerListSizeForRequest: %v", err)
}
hpackDec := hpack.NewDecoder(initialHeaderTableSize, func(hf hpack.HeaderField) {
size += uint64(hf.Size())
})
if len(hdrs) > 0 {
if _, err := hpackDec.Write(hdrs); err != nil {
t.Fatalf("headerListSizeForRequest: %v", err)
}
}
return size
}
// Create a new Request for each test, rather than reusing the
// same Request, to avoid a race when modifying req.Headers.
// See https://github.com/golang/go/issues/21316
newRequest := func() *http.Request {
// Body must be non-nil to enable writing trailers.
body := strings.NewReader("hello")
req, err := http.NewRequest("POST", st.ts.URL, body)
if err != nil {
t.Fatalf("newRequest: NewRequest: %v", err)
}
return req
}
// Make an arbitrary request to ensure we get the server's
// settings frame and initialize peerMaxHeaderListSize.
req := newRequest()
checkRoundTrip(req, nil, "Initial request")
// Get the ClientConn associated with the request and validate
// peerMaxHeaderListSize.
addr := authorityAddr(req.URL.Scheme, req.URL.Host)
cc, err := tr.connPool().GetClientConn(req, addr)
if err != nil {
t.Fatalf("GetClientConn: %v", err)
}
cc.mu.Lock()
peerSize := cc.peerMaxHeaderListSize
cc.mu.Unlock()
st.scMu.Lock()
wantSize := uint64(st.sc.maxHeaderListSize())
st.scMu.Unlock()
if peerSize != wantSize {
t.Errorf("peerMaxHeaderListSize = %v; want %v", peerSize, wantSize)
}
// Sanity check peerSize. (*serverConn) maxHeaderListSize adds
// 320 bytes of padding.
wantHeaderBytes := uint64(st.ts.Config.MaxHeaderBytes) + 320
if peerSize != wantHeaderBytes {
t.Errorf("peerMaxHeaderListSize = %v; want %v.", peerSize, wantHeaderBytes)
}
// Pad headers & trailers, but stay under peerSize.
req = newRequest()
req.Header = make(http.Header)
req.Trailer = make(http.Header)
filler := strings.Repeat("*", 1024)
padHeaders(t, req.Trailer, peerSize, filler)
// cc.encodeHeaders adds some default headers to the request,
// so we need to leave room for those.
defaultBytes := headerListSizeForRequest(req)
padHeaders(t, req.Header, peerSize-defaultBytes, filler)
checkRoundTrip(req, nil, "Headers & Trailers under limit")
// Add enough header bytes to push us over peerSize.
req = newRequest()
req.Header = make(http.Header)
padHeaders(t, req.Header, peerSize, filler)
checkRoundTrip(req, errRequestHeaderListSize, "Headers over limit")
// Push trailers over the limit.
req = newRequest()
req.Trailer = make(http.Header)
padHeaders(t, req.Trailer, peerSize+1, filler)
checkRoundTrip(req, errRequestHeaderListSize, "Trailers over limit")
// Send headers with a single large value.
req = newRequest()
filler = strings.Repeat("*", int(peerSize))
req.Header = make(http.Header)
req.Header.Set("Big", filler)
checkRoundTrip(req, errRequestHeaderListSize, "Single large header")
// Send trailers with a single large value.
req = newRequest()
req.Trailer = make(http.Header)
req.Trailer.Set("Big", filler)
checkRoundTrip(req, errRequestHeaderListSize, "Single large trailer")
}
func TestTransportChecksResponseHeaderListSize(t *testing.T) {
ct := newClientTester(t)
ct.client = func() error {
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
res, err := ct.tr.RoundTrip(req)
if err != errResponseHeaderListSize {
if res != nil {
res.Body.Close()
}
size := int64(0)
for k, vv := range res.Header {
for _, v := range vv {
size += int64(len(k)) + int64(len(v)) + 32
}
}
return fmt.Errorf("RoundTrip Error = %v (and %d bytes of response headers); want errResponseHeaderListSize", err, size)
}
return nil
}
ct.server = func() error {
ct.greet()
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
for {
f, err := ct.fr.ReadFrame()
if err != nil {
return err
}
switch f := f.(type) {
case *HeadersFrame:
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
large := strings.Repeat("a", 1<<10)
for i := 0; i < 5042; i++ {
enc.WriteField(hpack.HeaderField{Name: large, Value: large})
}
if size, want := buf.Len(), 6329; size != want {
// Note: this number might change if
// our hpack implementation
// changes. That's fine. This is
// just a sanity check that our
// response can fit in a single
// header block fragment frame.
return fmt.Errorf("encoding over 10MB of duplicate keypairs took %d bytes; expected %d", size, want)
}
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.StreamID,
EndHeaders: true,
EndStream: true,
BlockFragment: buf.Bytes(),
})
return nil
}
}
}
ct.run()
}
// Test that the Transport returns a typed error from Response.Body.Read calls
// when the server sends an error. (here we use a panic, since that should generate
// a stream error, but others like cancel should be similar)
func TestTransportBodyReadErrorType(t *testing.T) {
doPanic := make(chan bool, 1)
st := newServerTester(t,
func(w http.ResponseWriter, r *http.Request) {
w.(http.Flusher).Flush() // force headers out
<-doPanic
panic("boom")
},
optOnlyServer,
optQuiet,
)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
c := &http.Client{Transport: tr}
res, err := c.Get(st.ts.URL)
if err != nil {
t.Fatal(err)
}
defer res.Body.Close()
doPanic <- true
buf := make([]byte, 100)
n, err := res.Body.Read(buf)
want := StreamError{StreamID: 0x1, Code: 0x2}
if !reflect.DeepEqual(want, err) {
t.Errorf("Read = %v, %#v; want error %#v", n, err, want)
}
}
// golang.org/issue/13924
// This used to fail after many iterations, especially with -race:
// go test -v -run=TestTransportDoubleCloseOnWriteError -count=500 -race
func TestTransportDoubleCloseOnWriteError(t *testing.T) {
var (
mu sync.Mutex
conn net.Conn // to close if set
)
st := newServerTester(t,
func(w http.ResponseWriter, r *http.Request) {
mu.Lock()
defer mu.Unlock()
if conn != nil {
conn.Close()
}
},
optOnlyServer,
)
defer st.Close()
tr := &Transport{
TLSClientConfig: tlsConfigInsecure,
DialTLS: func(network, addr string, cfg *tls.Config) (net.Conn, error) {
tc, err := tls.Dial(network, addr, cfg)
if err != nil {
return nil, err
}
mu.Lock()
defer mu.Unlock()
conn = tc
return tc, nil
},
}
defer tr.CloseIdleConnections()
c := &http.Client{Transport: tr}
c.Get(st.ts.URL)
}
// Test that the http1 Transport.DisableKeepAlives option is respected
// and connections are closed as soon as idle.
// See golang.org/issue/14008
func TestTransportDisableKeepAlives(t *testing.T) {
st := newServerTester(t,
func(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, "hi")
},
optOnlyServer,
)
defer st.Close()
connClosed := make(chan struct{}) // closed on tls.Conn.Close
tr := &Transport{
t1: &http.Transport{
DisableKeepAlives: true,
},
TLSClientConfig: tlsConfigInsecure,
DialTLS: func(network, addr string, cfg *tls.Config) (net.Conn, error) {
tc, err := tls.Dial(network, addr, cfg)
if err != nil {
return nil, err
}
return &noteCloseConn{Conn: tc, closefn: func() { close(connClosed) }}, nil
},
}
c := &http.Client{Transport: tr}
res, err := c.Get(st.ts.URL)
if err != nil {
t.Fatal(err)
}
if _, err := ioutil.ReadAll(res.Body); err != nil {
t.Fatal(err)
}
defer res.Body.Close()
select {
case <-connClosed:
case <-time.After(1 * time.Second):
t.Errorf("timeout")
}
}
// Test concurrent requests with Transport.DisableKeepAlives. We can share connections,
// but when things are totally idle, it still needs to close.
func TestTransportDisableKeepAlives_Concurrency(t *testing.T) {
const D = 25 * time.Millisecond
st := newServerTester(t,
func(w http.ResponseWriter, r *http.Request) {
time.Sleep(D)
io.WriteString(w, "hi")
},
optOnlyServer,
)
defer st.Close()
var dials int32
var conns sync.WaitGroup
tr := &Transport{
t1: &http.Transport{
DisableKeepAlives: true,
},
TLSClientConfig: tlsConfigInsecure,
DialTLS: func(network, addr string, cfg *tls.Config) (net.Conn, error) {
tc, err := tls.Dial(network, addr, cfg)
if err != nil {
return nil, err
}
atomic.AddInt32(&dials, 1)
conns.Add(1)
return &noteCloseConn{Conn: tc, closefn: func() { conns.Done() }}, nil
},
}
c := &http.Client{Transport: tr}
var reqs sync.WaitGroup
const N = 20
for i := 0; i < N; i++ {
reqs.Add(1)
if i == N-1 {
// For the final request, try to make all the
// others close. This isn't verified in the
// count, other than the Log statement, since
// it's so timing dependent. This test is
// really to make sure we don't interrupt a
// valid request.
time.Sleep(D * 2)
}
go func() {
defer reqs.Done()
res, err := c.Get(st.ts.URL)
if err != nil {
t.Error(err)
return
}
if _, err := ioutil.ReadAll(res.Body); err != nil {
t.Error(err)
return
}
res.Body.Close()
}()
}
reqs.Wait()
conns.Wait()
t.Logf("did %d dials, %d requests", atomic.LoadInt32(&dials), N)
}
type noteCloseConn struct {
net.Conn
onceClose sync.Once
closefn func()
}
func (c *noteCloseConn) Close() error {
c.onceClose.Do(c.closefn)
return c.Conn.Close()
}
func isTimeout(err error) bool {
switch err := err.(type) {
case nil:
return false
case *url.Error:
return isTimeout(err.Err)
case net.Error:
return err.Timeout()
}
return false
}
// Test that the http1 Transport.ResponseHeaderTimeout option and cancel is sent.
func TestTransportResponseHeaderTimeout_NoBody(t *testing.T) {
testTransportResponseHeaderTimeout(t, false)
}
func TestTransportResponseHeaderTimeout_Body(t *testing.T) {
testTransportResponseHeaderTimeout(t, true)
}
func testTransportResponseHeaderTimeout(t *testing.T, body bool) {
ct := newClientTester(t)
ct.tr.t1 = &http.Transport{
ResponseHeaderTimeout: 5 * time.Millisecond,
}
ct.client = func() error {
c := &http.Client{Transport: ct.tr}
var err error
var n int64
const bodySize = 4 << 20
if body {
_, err = c.Post("https://dummy.tld/", "text/foo", io.LimitReader(countingReader{&n}, bodySize))
} else {
_, err = c.Get("https://dummy.tld/")
}
if !isTimeout(err) {
t.Errorf("client expected timeout error; got %#v", err)
}
if body && n != bodySize {
t.Errorf("only read %d bytes of body; want %d", n, bodySize)
}
return nil
}
ct.server = func() error {
ct.greet()
for {
f, err := ct.fr.ReadFrame()
if err != nil {
t.Logf("ReadFrame: %v", err)
return nil
}
switch f := f.(type) {
case *DataFrame:
dataLen := len(f.Data())
if dataLen > 0 {
if err := ct.fr.WriteWindowUpdate(0, uint32(dataLen)); err != nil {
return err
}
if err := ct.fr.WriteWindowUpdate(f.StreamID, uint32(dataLen)); err != nil {
return err
}
}
case *RSTStreamFrame:
if f.StreamID == 1 && f.ErrCode == ErrCodeCancel {
return nil
}
}
}
}
ct.run()
}
func TestTransportDisableCompression(t *testing.T) {
const body = "sup"
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
want := http.Header{
"User-Agent": []string{"Go-http-client/2.0"},
}
if !reflect.DeepEqual(r.Header, want) {
t.Errorf("request headers = %v; want %v", r.Header, want)
}
}, optOnlyServer)
defer st.Close()
tr := &Transport{
TLSClientConfig: tlsConfigInsecure,
t1: &http.Transport{
DisableCompression: true,
},
}
defer tr.CloseIdleConnections()
req, err := http.NewRequest("GET", st.ts.URL, nil)
if err != nil {
t.Fatal(err)
}
res, err := tr.RoundTrip(req)
if err != nil {
t.Fatal(err)
}
defer res.Body.Close()
}
// RFC 7540 section 8.1.2.2
func TestTransportRejectsConnHeaders(t *testing.T) {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
var got []string
for k := range r.Header {
got = append(got, k)
}
sort.Strings(got)
w.Header().Set("Got-Header", strings.Join(got, ","))
}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
tests := []struct {
key string
value []string
want string
}{
{
key: "Upgrade",
value: []string{"anything"},
want: "ERROR: http2: invalid Upgrade request header: [\"anything\"]",
},
{
key: "Connection",
value: []string{"foo"},
want: "ERROR: http2: invalid Connection request header: [\"foo\"]",
},
{
key: "Connection",
value: []string{"close"},
want: "Accept-Encoding,User-Agent",
},
{
key: "Connection",
value: []string{"CLoSe"},
want: "Accept-Encoding,User-Agent",
},
{
key: "Connection",
value: []string{"close", "something-else"},
want: "ERROR: http2: invalid Connection request header: [\"close\" \"something-else\"]",
},
{
key: "Connection",
value: []string{"keep-alive"},
want: "Accept-Encoding,User-Agent",
},
{
key: "Connection",
value: []string{"Keep-ALIVE"},
want: "Accept-Encoding,User-Agent",
},
{
key: "Proxy-Connection", // just deleted and ignored
value: []string{"keep-alive"},
want: "Accept-Encoding,User-Agent",
},
{
key: "Transfer-Encoding",
value: []string{""},
want: "Accept-Encoding,User-Agent",
},
{
key: "Transfer-Encoding",
value: []string{"foo"},
want: "ERROR: http2: invalid Transfer-Encoding request header: [\"foo\"]",
},
{
key: "Transfer-Encoding",
value: []string{"chunked"},
want: "Accept-Encoding,User-Agent",
},
{
key: "Transfer-Encoding",
value: []string{"chunked", "other"},
want: "ERROR: http2: invalid Transfer-Encoding request header: [\"chunked\" \"other\"]",
},
{
key: "Content-Length",
value: []string{"123"},
want: "Accept-Encoding,User-Agent",
},
{
key: "Keep-Alive",
value: []string{"doop"},
want: "Accept-Encoding,User-Agent",
},
}
for _, tt := range tests {
req, _ := http.NewRequest("GET", st.ts.URL, nil)
req.Header[tt.key] = tt.value
res, err := tr.RoundTrip(req)
var got string
if err != nil {
got = fmt.Sprintf("ERROR: %v", err)
} else {
got = res.Header.Get("Got-Header")
res.Body.Close()
}
if got != tt.want {
t.Errorf("For key %q, value %q, got = %q; want %q", tt.key, tt.value, got, tt.want)
}
}
}
// golang.org/issue/14048
func TestTransportFailsOnInvalidHeaders(t *testing.T) {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
var got []string
for k := range r.Header {
got = append(got, k)
}
sort.Strings(got)
w.Header().Set("Got-Header", strings.Join(got, ","))
}, optOnlyServer)
defer st.Close()
tests := [...]struct {
h http.Header
wantErr string
}{
0: {
h: http.Header{"with space": {"foo"}},
wantErr: `invalid HTTP header name "with space"`,
},
1: {
h: http.Header{"name": {"Брэд"}},
wantErr: "", // okay
},
2: {
h: http.Header{"имя": {"Brad"}},
wantErr: `invalid HTTP header name "имя"`,
},
3: {
h: http.Header{"foo": {"foo\x01bar"}},
wantErr: `invalid HTTP header value "foo\x01bar" for header "foo"`,
},
}
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
for i, tt := range tests {
req, _ := http.NewRequest("GET", st.ts.URL, nil)
req.Header = tt.h
res, err := tr.RoundTrip(req)
var bad bool
if tt.wantErr == "" {
if err != nil {
bad = true
t.Errorf("case %d: error = %v; want no error", i, err)
}
} else {
if !strings.Contains(fmt.Sprint(err), tt.wantErr) {
bad = true
t.Errorf("case %d: error = %v; want error %q", i, err, tt.wantErr)
}
}
if err == nil {
if bad {
t.Logf("case %d: server got headers %q", i, res.Header.Get("Got-Header"))
}
res.Body.Close()
}
}
}
// Tests that gzipReader doesn't crash on a second Read call following
// the first Read call's gzip.NewReader returning an error.
func TestGzipReader_DoubleReadCrash(t *testing.T) {
gz := &gzipReader{
body: ioutil.NopCloser(strings.NewReader("0123456789")),
}
var buf [1]byte
n, err1 := gz.Read(buf[:])
if n != 0 || !strings.Contains(fmt.Sprint(err1), "invalid header") {
t.Fatalf("Read = %v, %v; want 0, invalid header", n, err1)
}
n, err2 := gz.Read(buf[:])
if n != 0 || err2 != err1 {
t.Fatalf("second Read = %v, %v; want 0, %v", n, err2, err1)
}
}
func TestTransportNewTLSConfig(t *testing.T) {
tests := [...]struct {
conf *tls.Config
host string
want *tls.Config
}{
// Normal case.
0: {
conf: nil,
host: "foo.com",
want: &tls.Config{
ServerName: "foo.com",
NextProtos: []string{NextProtoTLS},
},
},
// User-provided name (bar.com) takes precedence:
1: {
conf: &tls.Config{
ServerName: "bar.com",
},
host: "foo.com",
want: &tls.Config{
ServerName: "bar.com",
NextProtos: []string{NextProtoTLS},
},
},
// NextProto is prepended:
2: {
conf: &tls.Config{
NextProtos: []string{"foo", "bar"},
},
host: "example.com",
want: &tls.Config{
ServerName: "example.com",
NextProtos: []string{NextProtoTLS, "foo", "bar"},
},
},
// NextProto is not duplicated:
3: {
conf: &tls.Config{
NextProtos: []string{"foo", "bar", NextProtoTLS},
},
host: "example.com",
want: &tls.Config{
ServerName: "example.com",
NextProtos: []string{"foo", "bar", NextProtoTLS},
},
},
}
for i, tt := range tests {
// Ignore the session ticket keys part, which ends up populating
// unexported fields in the Config:
if tt.conf != nil {
tt.conf.SessionTicketsDisabled = true
}
tr := &Transport{TLSClientConfig: tt.conf}
got := tr.newTLSConfig(tt.host)
got.SessionTicketsDisabled = false
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("%d. got %#v; want %#v", i, got, tt.want)
}
}
}
// The Google GFE responds to HEAD requests with a HEADERS frame
// without END_STREAM, followed by a 0-length DATA frame with
// END_STREAM. Make sure we don't get confused by that. (We did.)
func TestTransportReadHeadResponse(t *testing.T) {
ct := newClientTester(t)
clientDone := make(chan struct{})
ct.client = func() error {
defer close(clientDone)
req, _ := http.NewRequest("HEAD", "https://dummy.tld/", nil)
res, err := ct.tr.RoundTrip(req)
if err != nil {
return err
}
if res.ContentLength != 123 {
return fmt.Errorf("Content-Length = %d; want 123", res.ContentLength)
}
slurp, err := ioutil.ReadAll(res.Body)
if err != nil {
return fmt.Errorf("ReadAll: %v", err)
}
if len(slurp) > 0 {
return fmt.Errorf("Unexpected non-empty ReadAll body: %q", slurp)
}
return nil
}
ct.server = func() error {
ct.greet()
for {
f, err := ct.fr.ReadFrame()
if err != nil {
t.Logf("ReadFrame: %v", err)
return nil
}
hf, ok := f.(*HeadersFrame)
if !ok {
continue
}
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
enc.WriteField(hpack.HeaderField{Name: "content-length", Value: "123"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: hf.StreamID,
EndHeaders: true,
EndStream: false, // as the GFE does
BlockFragment: buf.Bytes(),
})
ct.fr.WriteData(hf.StreamID, true, nil)
<-clientDone
return nil
}
}
ct.run()
}
func TestTransportReadHeadResponseWithBody(t *testing.T) {
// This test use not valid response format.
// Discarding logger output to not spam tests output.
log.SetOutput(ioutil.Discard)
defer log.SetOutput(os.Stderr)
response := "redirecting to /elsewhere"
ct := newClientTester(t)
clientDone := make(chan struct{})
ct.client = func() error {
defer close(clientDone)
req, _ := http.NewRequest("HEAD", "https://dummy.tld/", nil)
res, err := ct.tr.RoundTrip(req)
if err != nil {
return err
}
if res.ContentLength != int64(len(response)) {
return fmt.Errorf("Content-Length = %d; want %d", res.ContentLength, len(response))
}
slurp, err := ioutil.ReadAll(res.Body)
if err != nil {
return fmt.Errorf("ReadAll: %v", err)
}
if len(slurp) > 0 {
return fmt.Errorf("Unexpected non-empty ReadAll body: %q", slurp)
}
return nil
}
ct.server = func() error {
ct.greet()
for {
f, err := ct.fr.ReadFrame()
if err != nil {
t.Logf("ReadFrame: %v", err)
return nil
}
hf, ok := f.(*HeadersFrame)
if !ok {
continue
}
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
enc.WriteField(hpack.HeaderField{Name: "content-length", Value: strconv.Itoa(len(response))})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: hf.StreamID,
EndHeaders: true,
EndStream: false,
BlockFragment: buf.Bytes(),
})
ct.fr.WriteData(hf.StreamID, true, []byte(response))
<-clientDone
return nil
}
}
ct.run()
}
type neverEnding byte
func (b neverEnding) Read(p []byte) (int, error) {
for i := range p {
p[i] = byte(b)
}
return len(p), nil
}
// golang.org/issue/15425: test that a handler closing the request
// body doesn't terminate the stream to the peer. (It just stops
// readability from the handler's side, and eventually the client
// runs out of flow control tokens)
func TestTransportHandlerBodyClose(t *testing.T) {
const bodySize = 10 << 20
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
r.Body.Close()
io.Copy(w, io.LimitReader(neverEnding('A'), bodySize))
}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
g0 := runtime.NumGoroutine()
const numReq = 10
for i := 0; i < numReq; i++ {
req, err := http.NewRequest("POST", st.ts.URL, struct{ io.Reader }{io.LimitReader(neverEnding('A'), bodySize)})
if err != nil {
t.Fatal(err)
}
res, err := tr.RoundTrip(req)
if err != nil {
t.Fatal(err)
}
n, err := io.Copy(ioutil.Discard, res.Body)
res.Body.Close()
if n != bodySize || err != nil {
t.Fatalf("req#%d: Copy = %d, %v; want %d, nil", i, n, err, bodySize)
}
}
tr.CloseIdleConnections()
if !waitCondition(5*time.Second, 100*time.Millisecond, func() bool {
gd := runtime.NumGoroutine() - g0
return gd < numReq/2
}) {
t.Errorf("appeared to leak goroutines")
}
}
// https://golang.org/issue/15930
func TestTransportFlowControl(t *testing.T) {
const bufLen = 64 << 10
var total int64 = 100 << 20 // 100MB
if testing.Short() {
total = 10 << 20
}
var wrote int64 // updated atomically
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
b := make([]byte, bufLen)
for wrote < total {
n, err := w.Write(b)
atomic.AddInt64(&wrote, int64(n))
if err != nil {
t.Errorf("ResponseWriter.Write error: %v", err)
break
}
w.(http.Flusher).Flush()
}
}, optOnlyServer)
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
req, err := http.NewRequest("GET", st.ts.URL, nil)
if err != nil {
t.Fatal("NewRequest error:", err)
}
resp, err := tr.RoundTrip(req)
if err != nil {
t.Fatal("RoundTrip error:", err)
}
defer resp.Body.Close()
var read int64
b := make([]byte, bufLen)
for {
n, err := resp.Body.Read(b)
if err == io.EOF {
break
}
if err != nil {
t.Fatal("Read error:", err)
}
read += int64(n)
const max = transportDefaultStreamFlow
if w := atomic.LoadInt64(&wrote); -max > read-w || read-w > max {
t.Fatalf("Too much data inflight: server wrote %v bytes but client only received %v", w, read)
}
// Let the server get ahead of the client.
time.Sleep(1 * time.Millisecond)
}
}
// golang.org/issue/14627 -- if the server sends a GOAWAY frame, make
// the Transport remember it and return it back to users (via
// RoundTrip or request body reads) if needed (e.g. if the server
// proceeds to close the TCP connection before the client gets its
// response)
func TestTransportUsesGoAwayDebugError_RoundTrip(t *testing.T) {
testTransportUsesGoAwayDebugError(t, false)
}
func TestTransportUsesGoAwayDebugError_Body(t *testing.T) {
testTransportUsesGoAwayDebugError(t, true)
}
func testTransportUsesGoAwayDebugError(t *testing.T, failMidBody bool) {
ct := newClientTester(t)
clientDone := make(chan struct{})
const goAwayErrCode = ErrCodeHTTP11Required // arbitrary
const goAwayDebugData = "some debug data"
ct.client = func() error {
defer close(clientDone)
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
res, err := ct.tr.RoundTrip(req)
if failMidBody {
if err != nil {
return fmt.Errorf("unexpected client RoundTrip error: %v", err)
}
_, err = io.Copy(ioutil.Discard, res.Body)
res.Body.Close()
}
want := GoAwayError{
LastStreamID: 5,
ErrCode: goAwayErrCode,
DebugData: goAwayDebugData,
}
if !reflect.DeepEqual(err, want) {
t.Errorf("RoundTrip error = %T: %#v, want %T (%#v)", err, err, want, want)
}
return nil
}
ct.server = func() error {
ct.greet()
for {
f, err := ct.fr.ReadFrame()
if err != nil {
t.Logf("ReadFrame: %v", err)
return nil
}
hf, ok := f.(*HeadersFrame)
if !ok {
continue
}
if failMidBody {
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
enc.WriteField(hpack.HeaderField{Name: "content-length", Value: "123"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: hf.StreamID,
EndHeaders: true,
EndStream: false,
BlockFragment: buf.Bytes(),
})
}
// Write two GOAWAY frames, to test that the Transport takes
// the interesting parts of both.
ct.fr.WriteGoAway(5, ErrCodeNo, []byte(goAwayDebugData))
ct.fr.WriteGoAway(5, goAwayErrCode, nil)
ct.sc.(*net.TCPConn).CloseWrite()
<-clientDone
return nil
}
}
ct.run()
}
func testTransportReturnsUnusedFlowControl(t *testing.T, oneDataFrame bool) {
ct := newClientTester(t)
clientClosed := make(chan struct{})
serverWroteFirstByte := make(chan struct{})
ct.client = func() error {
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
res, err := ct.tr.RoundTrip(req)
if err != nil {
return err
}
<-serverWroteFirstByte
if n, err := res.Body.Read(make([]byte, 1)); err != nil || n != 1 {
return fmt.Errorf("body read = %v, %v; want 1, nil", n, err)
}
res.Body.Close() // leaving 4999 bytes unread
close(clientClosed)
return nil
}
ct.server = func() error {
ct.greet()
var hf *HeadersFrame
for {
f, err := ct.fr.ReadFrame()
if err != nil {
return fmt.Errorf("ReadFrame while waiting for Headers: %v", err)
}
switch f.(type) {
case *WindowUpdateFrame, *SettingsFrame:
continue
}
var ok bool
hf, ok = f.(*HeadersFrame)
if !ok {
return fmt.Errorf("Got %T; want HeadersFrame", f)
}
break
}
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
enc.WriteField(hpack.HeaderField{Name: "content-length", Value: "5000"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: hf.StreamID,
EndHeaders: true,
EndStream: false,
BlockFragment: buf.Bytes(),
})
// Two cases:
// - Send one DATA frame with 5000 bytes.
// - Send two DATA frames with 1 and 4999 bytes each.
//
// In both cases, the client should consume one byte of data,
// refund that byte, then refund the following 4999 bytes.
//
// In the second case, the server waits for the client connection to
// close before seconding the second DATA frame. This tests the case
// where the client receives a DATA frame after it has reset the stream.
if oneDataFrame {
ct.fr.WriteData(hf.StreamID, false /* don't end stream */, make([]byte, 5000))
close(serverWroteFirstByte)
<-clientClosed
} else {
ct.fr.WriteData(hf.StreamID, false /* don't end stream */, make([]byte, 1))
close(serverWroteFirstByte)
<-clientClosed
ct.fr.WriteData(hf.StreamID, false /* don't end stream */, make([]byte, 4999))
}
waitingFor := "RSTStreamFrame"
for {
f, err := ct.fr.ReadFrame()
if err != nil {
return fmt.Errorf("ReadFrame while waiting for %s: %v", waitingFor, err)
}
if _, ok := f.(*SettingsFrame); ok {
continue
}
switch waitingFor {
case "RSTStreamFrame":
if rf, ok := f.(*RSTStreamFrame); !ok || rf.ErrCode != ErrCodeCancel {
return fmt.Errorf("Expected a RSTStreamFrame with code cancel; got %v", summarizeFrame(f))
}
waitingFor = "WindowUpdateFrame"
case "WindowUpdateFrame":
if wuf, ok := f.(*WindowUpdateFrame); !ok || wuf.Increment != 4999 {
return fmt.Errorf("Expected WindowUpdateFrame for 4999 bytes; got %v", summarizeFrame(f))
}
return nil
}
}
}
ct.run()
}
// See golang.org/issue/16481
func TestTransportReturnsUnusedFlowControlSingleWrite(t *testing.T) {
testTransportReturnsUnusedFlowControl(t, true)
}
// See golang.org/issue/20469
func TestTransportReturnsUnusedFlowControlMultipleWrites(t *testing.T) {
testTransportReturnsUnusedFlowControl(t, false)
}
// Issue 16612: adjust flow control on open streams when transport
// receives SETTINGS with INITIAL_WINDOW_SIZE from server.
func TestTransportAdjustsFlowControl(t *testing.T) {
ct := newClientTester(t)
clientDone := make(chan struct{})
const bodySize = 1 << 20
ct.client = func() error {
defer ct.cc.(*net.TCPConn).CloseWrite()
defer close(clientDone)
req, _ := http.NewRequest("POST", "https://dummy.tld/", struct{ io.Reader }{io.LimitReader(neverEnding('A'), bodySize)})
res, err := ct.tr.RoundTrip(req)
if err != nil {
return err
}
res.Body.Close()
return nil
}
ct.server = func() error {
_, err := io.ReadFull(ct.sc, make([]byte, len(ClientPreface)))
if err != nil {
return fmt.Errorf("reading client preface: %v", err)
}
var gotBytes int64
var sentSettings bool
for {
f, err := ct.fr.ReadFrame()
if err != nil {
select {
case <-clientDone:
return nil
default:
return fmt.Errorf("ReadFrame while waiting for Headers: %v", err)
}
}
switch f := f.(type) {
case *DataFrame:
gotBytes += int64(len(f.Data()))
// After we've got half the client's
// initial flow control window's worth
// of request body data, give it just
// enough flow control to finish.
if gotBytes >= initialWindowSize/2 && !sentSettings {
sentSettings = true
ct.fr.WriteSettings(Setting{ID: SettingInitialWindowSize, Val: bodySize})
ct.fr.WriteWindowUpdate(0, bodySize)
ct.fr.WriteSettingsAck()
}
if f.StreamEnded() {
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.StreamID,
EndHeaders: true,
EndStream: true,
BlockFragment: buf.Bytes(),
})
}
}
}
}
ct.run()
}
// See golang.org/issue/16556
func TestTransportReturnsDataPaddingFlowControl(t *testing.T) {
ct := newClientTester(t)
unblockClient := make(chan bool, 1)
ct.client = func() error {
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
res, err := ct.tr.RoundTrip(req)
if err != nil {
return err
}
defer res.Body.Close()
<-unblockClient
return nil
}
ct.server = func() error {
ct.greet()
var hf *HeadersFrame
for {
f, err := ct.fr.ReadFrame()
if err != nil {
return fmt.Errorf("ReadFrame while waiting for Headers: %v", err)
}
switch f.(type) {
case *WindowUpdateFrame, *SettingsFrame:
continue
}
var ok bool
hf, ok = f.(*HeadersFrame)
if !ok {
return fmt.Errorf("Got %T; want HeadersFrame", f)
}
break
}
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
enc.WriteField(hpack.HeaderField{Name: "content-length", Value: "5000"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: hf.StreamID,
EndHeaders: true,
EndStream: false,
BlockFragment: buf.Bytes(),
})
pad := make([]byte, 5)
ct.fr.WriteDataPadded(hf.StreamID, false, make([]byte, 5000), pad) // without ending stream
f, err := ct.readNonSettingsFrame()
if err != nil {
return fmt.Errorf("ReadFrame while waiting for first WindowUpdateFrame: %v", err)
}
wantBack := uint32(len(pad)) + 1 // one byte for the length of the padding
if wuf, ok := f.(*WindowUpdateFrame); !ok || wuf.Increment != wantBack || wuf.StreamID != 0 {
return fmt.Errorf("Expected conn WindowUpdateFrame for %d bytes; got %v", wantBack, summarizeFrame(f))
}
f, err = ct.readNonSettingsFrame()
if err != nil {
return fmt.Errorf("ReadFrame while waiting for second WindowUpdateFrame: %v", err)
}
if wuf, ok := f.(*WindowUpdateFrame); !ok || wuf.Increment != wantBack || wuf.StreamID == 0 {
return fmt.Errorf("Expected stream WindowUpdateFrame for %d bytes; got %v", wantBack, summarizeFrame(f))
}
unblockClient <- true
return nil
}
ct.run()
}
// golang.org/issue/16572 -- RoundTrip shouldn't hang when it gets a
// StreamError as a result of the response HEADERS
func TestTransportReturnsErrorOnBadResponseHeaders(t *testing.T) {
ct := newClientTester(t)
ct.client = func() error {
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
res, err := ct.tr.RoundTrip(req)
if err == nil {
res.Body.Close()
return errors.New("unexpected successful GET")
}
want := StreamError{1, ErrCodeProtocol, headerFieldNameError(" content-type")}
if !reflect.DeepEqual(want, err) {
t.Errorf("RoundTrip error = %#v; want %#v", err, want)
}
return nil
}
ct.server = func() error {
ct.greet()
hf, err := ct.firstHeaders()
if err != nil {
return err
}
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
enc.WriteField(hpack.HeaderField{Name: " content-type", Value: "bogus"}) // bogus spaces
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: hf.StreamID,
EndHeaders: true,
EndStream: false,
BlockFragment: buf.Bytes(),
})
for {
fr, err := ct.readFrame()
if err != nil {
return fmt.Errorf("error waiting for RST_STREAM from client: %v", err)
}
if _, ok := fr.(*SettingsFrame); ok {
continue
}
if rst, ok := fr.(*RSTStreamFrame); !ok || rst.StreamID != 1 || rst.ErrCode != ErrCodeProtocol {
t.Errorf("Frame = %v; want RST_STREAM for stream 1 with ErrCodeProtocol", summarizeFrame(fr))
}
break
}
return nil
}
ct.run()
}
// byteAndEOFReader returns is in an io.Reader which reads one byte
// (the underlying byte) and io.EOF at once in its Read call.
type byteAndEOFReader byte
func (b byteAndEOFReader) Read(p []byte) (n int, err error) {
if len(p) == 0 {
panic("unexpected useless call")
}
p[0] = byte(b)
return 1, io.EOF
}
// Issue 16788: the Transport had a regression where it started
// sending a spurious DATA frame with a duplicate END_STREAM bit after
// the request body writer goroutine had already read an EOF from the
// Request.Body and included the END_STREAM on a data-carrying DATA
// frame.
//
// Notably, to trigger this, the requests need to use a Request.Body
// which returns (non-0, io.EOF) and also needs to set the ContentLength
// explicitly.
func TestTransportBodyDoubleEndStream(t *testing.T) {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
// Nothing.
}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
for i := 0; i < 2; i++ {
req, _ := http.NewRequest("POST", st.ts.URL, byteAndEOFReader('a'))
req.ContentLength = 1
res, err := tr.RoundTrip(req)
if err != nil {
t.Fatalf("failure on req %d: %v", i+1, err)
}
defer res.Body.Close()
}
}
// golang.org/issue/16847, golang.org/issue/19103
func TestTransportRequestPathPseudo(t *testing.T) {
type result struct {
path string
err string
}
tests := []struct {
req *http.Request
want result
}{
0: {
req: &http.Request{
Method: "GET",
URL: &url.URL{
Host: "foo.com",
Path: "/foo",
},
},
want: result{path: "/foo"},
},
// In Go 1.7, we accepted paths of "//foo".
// In Go 1.8, we rejected it (issue 16847).
// In Go 1.9, we accepted it again (issue 19103).
1: {
req: &http.Request{
Method: "GET",
URL: &url.URL{
Host: "foo.com",
Path: "//foo",
},
},
want: result{path: "//foo"},
},
// Opaque with //$Matching_Hostname/path
2: {
req: &http.Request{
Method: "GET",
URL: &url.URL{
Scheme: "https",
Opaque: "//foo.com/path",
Host: "foo.com",
Path: "/ignored",
},
},
want: result{path: "/path"},
},
// Opaque with some other Request.Host instead:
3: {
req: &http.Request{
Method: "GET",
Host: "bar.com",
URL: &url.URL{
Scheme: "https",
Opaque: "//bar.com/path",
Host: "foo.com",
Path: "/ignored",
},
},
want: result{path: "/path"},
},
// Opaque without the leading "//":
4: {
req: &http.Request{
Method: "GET",
URL: &url.URL{
Opaque: "/path",
Host: "foo.com",
Path: "/ignored",
},
},
want: result{path: "/path"},
},
// Opaque we can't handle:
5: {
req: &http.Request{
Method: "GET",
URL: &url.URL{
Scheme: "https",
Opaque: "//unknown_host/path",
Host: "foo.com",
Path: "/ignored",
},
},
want: result{err: `invalid request :path "https://unknown_host/path" from URL.Opaque = "//unknown_host/path"`},
},
// A CONNECT request:
6: {
req: &http.Request{
Method: "CONNECT",
URL: &url.URL{
Host: "foo.com",
},
},
want: result{},
},
}
for i, tt := range tests {
cc := &ClientConn{peerMaxHeaderListSize: 0xffffffffffffffff}
cc.henc = hpack.NewEncoder(&cc.hbuf)
cc.mu.Lock()
hdrs, err := cc.encodeHeaders(tt.req, false, "", -1)
cc.mu.Unlock()
var got result
hpackDec := hpack.NewDecoder(initialHeaderTableSize, func(f hpack.HeaderField) {
if f.Name == ":path" {
got.path = f.Value
}
})
if err != nil {
got.err = err.Error()
} else if len(hdrs) > 0 {
if _, err := hpackDec.Write(hdrs); err != nil {
t.Errorf("%d. bogus hpack: %v", i, err)
continue
}
}
if got != tt.want {
t.Errorf("%d. got %+v; want %+v", i, got, tt.want)
}
}
}
// golang.org/issue/17071 -- don't sniff the first byte of the request body
// before we've determined that the ClientConn is usable.
func TestRoundTripDoesntConsumeRequestBodyEarly(t *testing.T) {
const body = "foo"
req, _ := http.NewRequest("POST", "http://foo.com/", ioutil.NopCloser(strings.NewReader(body)))
cc := &ClientConn{
closed: true,
}
_, err := cc.RoundTrip(req)
if err != errClientConnUnusable {
t.Fatalf("RoundTrip = %v; want errClientConnUnusable", err)
}
slurp, err := ioutil.ReadAll(req.Body)
if err != nil {
t.Errorf("ReadAll = %v", err)
}
if string(slurp) != body {
t.Errorf("Body = %q; want %q", slurp, body)
}
}
func TestClientConnPing(t *testing.T) {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
cc, err := tr.dialClientConn(st.ts.Listener.Addr().String(), false)
if err != nil {
t.Fatal(err)
}
if err = cc.Ping(context.Background()); err != nil {
t.Fatal(err)
}
}
// Issue 16974: if the server sent a DATA frame after the user
// canceled the Transport's Request, the Transport previously wrote to a
// closed pipe, got an error, and ended up closing the whole TCP
// connection.
func TestTransportCancelDataResponseRace(t *testing.T) {
cancel := make(chan struct{})
clientGotError := make(chan bool, 1)
const msg = "Hello."
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
if strings.Contains(r.URL.Path, "/hello") {
time.Sleep(50 * time.Millisecond)
io.WriteString(w, msg)
return
}
for i := 0; i < 50; i++ {
io.WriteString(w, "Some data.")
w.(http.Flusher).Flush()
if i == 2 {
close(cancel)
<-clientGotError
}
time.Sleep(10 * time.Millisecond)
}
}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
c := &http.Client{Transport: tr}
req, _ := http.NewRequest("GET", st.ts.URL, nil)
req.Cancel = cancel
res, err := c.Do(req)
if err != nil {
t.Fatal(err)
}
if _, err = io.Copy(ioutil.Discard, res.Body); err == nil {
t.Fatal("unexpected success")
}
clientGotError <- true
res, err = c.Get(st.ts.URL + "/hello")
if err != nil {
t.Fatal(err)
}
slurp, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Fatal(err)
}
if string(slurp) != msg {
t.Errorf("Got = %q; want %q", slurp, msg)
}
}
// Issue 21316: It should be safe to reuse an http.Request after the
// request has completed.
func TestTransportNoRaceOnRequestObjectAfterRequestComplete(t *testing.T) {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(200)
io.WriteString(w, "body")
}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
req, _ := http.NewRequest("GET", st.ts.URL, nil)
resp, err := tr.RoundTrip(req)
if err != nil {
t.Fatal(err)
}
if _, err = io.Copy(ioutil.Discard, resp.Body); err != nil {
t.Fatalf("error reading response body: %v", err)
}
if err := resp.Body.Close(); err != nil {
t.Fatalf("error closing response body: %v", err)
}
// This access of req.Header should not race with code in the transport.
req.Header = http.Header{}
}
func TestTransportRetryAfterGOAWAY(t *testing.T) {
var dialer struct {
sync.Mutex
count int
}
ct1 := make(chan *clientTester)
ct2 := make(chan *clientTester)
ln := newLocalListener(t)
defer ln.Close()
tr := &Transport{
TLSClientConfig: tlsConfigInsecure,
}
tr.DialTLS = func(network, addr string, cfg *tls.Config) (net.Conn, error) {
dialer.Lock()
defer dialer.Unlock()
dialer.count++
if dialer.count == 3 {
return nil, errors.New("unexpected number of dials")
}
cc, err := net.Dial("tcp", ln.Addr().String())
if err != nil {
return nil, fmt.Errorf("dial error: %v", err)
}
sc, err := ln.Accept()
if err != nil {
return nil, fmt.Errorf("accept error: %v", err)
}
ct := &clientTester{
t: t,
tr: tr,
cc: cc,
sc: sc,
fr: NewFramer(sc, sc),
}
switch dialer.count {
case 1:
ct1 <- ct
case 2:
ct2 <- ct
}
return cc, nil
}
errs := make(chan error, 3)
done := make(chan struct{})
defer close(done)
// Client.
go func() {
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
res, err := tr.RoundTrip(req)
if res != nil {
res.Body.Close()
if got := res.Header.Get("Foo"); got != "bar" {
err = fmt.Errorf("foo header = %q; want bar", got)
}
}
if err != nil {
err = fmt.Errorf("RoundTrip: %v", err)
}
errs <- err
}()
connToClose := make(chan io.Closer, 2)
// Server for the first request.
go func() {
var ct *clientTester
select {
case ct = <-ct1:
case <-done:
return
}
connToClose <- ct.cc
ct.greet()
hf, err := ct.firstHeaders()
if err != nil {
errs <- fmt.Errorf("server1 failed reading HEADERS: %v", err)
return
}
t.Logf("server1 got %v", hf)
if err := ct.fr.WriteGoAway(0 /*max id*/, ErrCodeNo, nil); err != nil {
errs <- fmt.Errorf("server1 failed writing GOAWAY: %v", err)
return
}
errs <- nil
}()
// Server for the second request.
go func() {
var ct *clientTester
select {
case ct = <-ct2:
case <-done:
return
}
connToClose <- ct.cc
ct.greet()
hf, err := ct.firstHeaders()
if err != nil {
errs <- fmt.Errorf("server2 failed reading HEADERS: %v", err)
return
}
t.Logf("server2 got %v", hf)
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
enc.WriteField(hpack.HeaderField{Name: "foo", Value: "bar"})
err = ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: hf.StreamID,
EndHeaders: true,
EndStream: false,
BlockFragment: buf.Bytes(),
})
if err != nil {
errs <- fmt.Errorf("server2 failed writing response HEADERS: %v", err)
} else {
errs <- nil
}
}()
for k := 0; k < 3; k++ {
select {
case err := <-errs:
if err != nil {
t.Error(err)
}
case <-time.After(1 * time.Second):
t.Errorf("timed out")
}
}
for {
select {
case c := <-connToClose:
c.Close()
default:
return
}
}
}
func TestTransportRetryAfterRefusedStream(t *testing.T) {
clientDone := make(chan struct{})
ct := newClientTester(t)
ct.client = func() error {
defer ct.cc.(*net.TCPConn).CloseWrite()
defer close(clientDone)
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
resp, err := ct.tr.RoundTrip(req)
if err != nil {
return fmt.Errorf("RoundTrip: %v", err)
}
resp.Body.Close()
if resp.StatusCode != 204 {
return fmt.Errorf("Status = %v; want 204", resp.StatusCode)
}
return nil
}
ct.server = func() error {
ct.greet()
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
nreq := 0
for {
f, err := ct.fr.ReadFrame()
if err != nil {
select {
case <-clientDone:
// If the client's done, it
// will have reported any
// errors on its side.
return nil
default:
return err
}
}
switch f := f.(type) {
case *WindowUpdateFrame, *SettingsFrame:
case *HeadersFrame:
if !f.HeadersEnded() {
return fmt.Errorf("headers should have END_HEADERS be ended: %v", f)
}
nreq++
if nreq == 1 {
ct.fr.WriteRSTStream(f.StreamID, ErrCodeRefusedStream)
} else {
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "204"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.StreamID,
EndHeaders: true,
EndStream: true,
BlockFragment: buf.Bytes(),
})
}
default:
return fmt.Errorf("Unexpected client frame %v", f)
}
}
}
ct.run()
}
func TestTransportRetryHasLimit(t *testing.T) {
// Skip in short mode because the total expected delay is 1s+2s+4s+8s+16s=29s.
if testing.Short() {
t.Skip("skipping long test in short mode")
}
clientDone := make(chan struct{})
ct := newClientTester(t)
ct.client = func() error {
defer ct.cc.(*net.TCPConn).CloseWrite()
defer close(clientDone)
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
resp, err := ct.tr.RoundTrip(req)
if err == nil {
return fmt.Errorf("RoundTrip expected error, got response: %+v", resp)
}
t.Logf("expected error, got: %v", err)
return nil
}
ct.server = func() error {
ct.greet()
for {
f, err := ct.fr.ReadFrame()
if err != nil {
select {
case <-clientDone:
// If the client's done, it
// will have reported any
// errors on its side.
return nil
default:
return err
}
}
switch f := f.(type) {
case *WindowUpdateFrame, *SettingsFrame:
case *HeadersFrame:
if !f.HeadersEnded() {
return fmt.Errorf("headers should have END_HEADERS be ended: %v", f)
}
ct.fr.WriteRSTStream(f.StreamID, ErrCodeRefusedStream)
default:
return fmt.Errorf("Unexpected client frame %v", f)
}
}
}
ct.run()
}
func TestTransportResponseDataBeforeHeaders(t *testing.T) {
// This test use not valid response format.
// Discarding logger output to not spam tests output.
log.SetOutput(ioutil.Discard)
defer log.SetOutput(os.Stderr)
ct := newClientTester(t)
ct.client = func() error {
defer ct.cc.(*net.TCPConn).CloseWrite()
req := httptest.NewRequest("GET", "https://dummy.tld/", nil)
// First request is normal to ensure the check is per stream and not per connection.
_, err := ct.tr.RoundTrip(req)
if err != nil {
return fmt.Errorf("RoundTrip expected no error, got: %v", err)
}
// Second request returns a DATA frame with no HEADERS.
resp, err := ct.tr.RoundTrip(req)
if err == nil {
return fmt.Errorf("RoundTrip expected error, got response: %+v", resp)
}
if err, ok := err.(StreamError); !ok || err.Code != ErrCodeProtocol {
return fmt.Errorf("expected stream PROTOCOL_ERROR, got: %v", err)
}
return nil
}
ct.server = func() error {
ct.greet()
for {
f, err := ct.fr.ReadFrame()
if err == io.EOF {
return nil
} else if err != nil {
return err
}
switch f := f.(type) {
case *WindowUpdateFrame, *SettingsFrame:
case *HeadersFrame:
switch f.StreamID {
case 1:
// Send a valid response to first request.
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "200"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.StreamID,
EndHeaders: true,
EndStream: true,
BlockFragment: buf.Bytes(),
})
case 3:
ct.fr.WriteData(f.StreamID, true, []byte("payload"))
}
default:
return fmt.Errorf("Unexpected client frame %v", f)
}
}
}
ct.run()
}
func TestTransportRequestsStallAtServerLimit(t *testing.T) {
const maxConcurrent = 2
greet := make(chan struct{}) // server sends initial SETTINGS frame
gotRequest := make(chan struct{}) // server received a request
clientDone := make(chan struct{})
// Collect errors from goroutines.
var wg sync.WaitGroup
errs := make(chan error, 100)
defer func() {
wg.Wait()
close(errs)
for err := range errs {
t.Error(err)
}
}()
// We will send maxConcurrent+2 requests. This checker goroutine waits for the
// following stages:
// 1. The first maxConcurrent requests are received by the server.
// 2. The client will cancel the next request
// 3. The server is unblocked so it can service the first maxConcurrent requests
// 4. The client will send the final request
wg.Add(1)
unblockClient := make(chan struct{})
clientRequestCancelled := make(chan struct{})
unblockServer := make(chan struct{})
go func() {
defer wg.Done()
// Stage 1.
for k := 0; k < maxConcurrent; k++ {
<-gotRequest
}
// Stage 2.
close(unblockClient)
<-clientRequestCancelled
// Stage 3: give some time for the final RoundTrip call to be scheduled and
// verify that the final request is not sent.
time.Sleep(50 * time.Millisecond)
select {
case <-gotRequest:
errs <- errors.New("last request did not stall")
close(unblockServer)
return
default:
}
close(unblockServer)
// Stage 4.
<-gotRequest
}()
ct := newClientTester(t)
ct.client = func() error {
var wg sync.WaitGroup
defer func() {
wg.Wait()
close(clientDone)
ct.cc.(*net.TCPConn).CloseWrite()
}()
for k := 0; k < maxConcurrent+2; k++ {
wg.Add(1)
go func(k int) {
defer wg.Done()
// Don't send the second request until after receiving SETTINGS from the server
// to avoid a race where we use the default SettingMaxConcurrentStreams, which
// is much larger than maxConcurrent. We have to send the first request before
// waiting because the first request triggers the dial and greet.
if k > 0 {
<-greet
}
// Block until maxConcurrent requests are sent before sending any more.
if k >= maxConcurrent {
<-unblockClient
}
req, _ := http.NewRequest("GET", fmt.Sprintf("https://dummy.tld/%d", k), nil)
if k == maxConcurrent {
// This request will be canceled.
cancel := make(chan struct{})
req.Cancel = cancel
close(cancel)
_, err := ct.tr.RoundTrip(req)
close(clientRequestCancelled)
if err == nil {
errs <- fmt.Errorf("RoundTrip(%d) should have failed due to cancel", k)
return
}
} else {
resp, err := ct.tr.RoundTrip(req)
if err != nil {
errs <- fmt.Errorf("RoundTrip(%d): %v", k, err)
return
}
ioutil.ReadAll(resp.Body)
resp.Body.Close()
if resp.StatusCode != 204 {
errs <- fmt.Errorf("Status = %v; want 204", resp.StatusCode)
return
}
}
}(k)
}
return nil
}
ct.server = func() error {
var wg sync.WaitGroup
defer wg.Wait()
ct.greet(Setting{SettingMaxConcurrentStreams, maxConcurrent})
// Server write loop.
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
writeResp := make(chan uint32, maxConcurrent+1)
wg.Add(1)
go func() {
defer wg.Done()
<-unblockServer
for id := range writeResp {
buf.Reset()
enc.WriteField(hpack.HeaderField{Name: ":status", Value: "204"})
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: id,
EndHeaders: true,
EndStream: true,
BlockFragment: buf.Bytes(),
})
}
}()
// Server read loop.
var nreq int
for {
f, err := ct.fr.ReadFrame()
if err != nil {
select {
case <-clientDone:
// If the client's done, it will have reported any errors on its side.
return nil
default:
return err
}
}
switch f := f.(type) {
case *WindowUpdateFrame:
case *SettingsFrame:
// Wait for the client SETTINGS ack until ending the greet.
close(greet)
case *HeadersFrame:
if !f.HeadersEnded() {
return fmt.Errorf("headers should have END_HEADERS be ended: %v", f)
}
gotRequest <- struct{}{}
nreq++
writeResp <- f.StreamID
if nreq == maxConcurrent+1 {
close(writeResp)
}
default:
return fmt.Errorf("Unexpected client frame %v", f)
}
}
}
ct.run()
}
func TestAuthorityAddr(t *testing.T) {
tests := []struct {
scheme, authority string
want string
}{
{"http", "foo.com", "foo.com:80"},
{"https", "foo.com", "foo.com:443"},
{"https", "foo.com:1234", "foo.com:1234"},
{"https", "1.2.3.4:1234", "1.2.3.4:1234"},
{"https", "1.2.3.4", "1.2.3.4:443"},
{"https", "[::1]:1234", "[::1]:1234"},
{"https", "[::1]", "[::1]:443"},
}
for _, tt := range tests {
got := authorityAddr(tt.scheme, tt.authority)
if got != tt.want {
t.Errorf("authorityAddr(%q, %q) = %q; want %q", tt.scheme, tt.authority, got, tt.want)
}
}
}
// Issue 20448: stop allocating for DATA frames' payload after
// Response.Body.Close is called.
func TestTransportAllocationsAfterResponseBodyClose(t *testing.T) {
megabyteZero := make([]byte, 1<<20)
writeErr := make(chan error, 1)
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
w.(http.Flusher).Flush()
var sum int64
for i := 0; i < 100; i++ {
n, err := w.Write(megabyteZero)
sum += int64(n)
if err != nil {
writeErr <- err
return
}
}
t.Logf("wrote all %d bytes", sum)
writeErr <- nil
}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
c := &http.Client{Transport: tr}
res, err := c.Get(st.ts.URL)
if err != nil {
t.Fatal(err)
}
var buf [1]byte
if _, err := res.Body.Read(buf[:]); err != nil {
t.Error(err)
}
if err := res.Body.Close(); err != nil {
t.Error(err)
}
trb, ok := res.Body.(transportResponseBody)
if !ok {
t.Fatalf("res.Body = %T; want transportResponseBody", res.Body)
}
if trb.cs.bufPipe.b != nil {
t.Errorf("response body pipe is still open")
}
gotErr := <-writeErr
if gotErr == nil {
t.Errorf("Handler unexpectedly managed to write its entire response without getting an error")
} else if gotErr != errStreamClosed {
t.Errorf("Handler Write err = %v; want errStreamClosed", gotErr)
}
}
// Issue 18891: make sure Request.Body == NoBody means no DATA frame
// is ever sent, even if empty.
func TestTransportNoBodyMeansNoDATA(t *testing.T) {
ct := newClientTester(t)
unblockClient := make(chan bool)
ct.client = func() error {
req, _ := http.NewRequest("GET", "https://dummy.tld/", go18httpNoBody())
ct.tr.RoundTrip(req)
<-unblockClient
return nil
}
ct.server = func() error {
defer close(unblockClient)
defer ct.cc.(*net.TCPConn).Close()
ct.greet()
for {
f, err := ct.fr.ReadFrame()
if err != nil {
return fmt.Errorf("ReadFrame while waiting for Headers: %v", err)
}
switch f := f.(type) {
default:
return fmt.Errorf("Got %T; want HeadersFrame", f)
case *WindowUpdateFrame, *SettingsFrame:
continue
case *HeadersFrame:
if !f.StreamEnded() {
return fmt.Errorf("got headers frame without END_STREAM")
}
return nil
}
}
}
ct.run()
}
func benchSimpleRoundTrip(b *testing.B, nHeaders int) {
defer disableGoroutineTracking()()
b.ReportAllocs()
st := newServerTester(b,
func(w http.ResponseWriter, r *http.Request) {
},
optOnlyServer,
optQuiet,
)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
req, err := http.NewRequest("GET", st.ts.URL, nil)
if err != nil {
b.Fatal(err)
}
for i := 0; i < nHeaders; i++ {
name := fmt.Sprint("A-", i)
req.Header.Set(name, "*")
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
res, err := tr.RoundTrip(req)
if err != nil {
if res != nil {
res.Body.Close()
}
b.Fatalf("RoundTrip err = %v; want nil", err)
}
res.Body.Close()
if res.StatusCode != http.StatusOK {
b.Fatalf("Response code = %v; want %v", res.StatusCode, http.StatusOK)
}
}
}
type infiniteReader struct{}
func (r infiniteReader) Read(b []byte) (int, error) {
return len(b), nil
}
// Issue 20521: it is not an error to receive a response and end stream
// from the server without the body being consumed.
func TestTransportResponseAndResetWithoutConsumingBodyRace(t *testing.T) {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
// The request body needs to be big enough to trigger flow control.
req, _ := http.NewRequest("PUT", st.ts.URL, infiniteReader{})
res, err := tr.RoundTrip(req)
if err != nil {
t.Fatal(err)
}
if res.StatusCode != http.StatusOK {
t.Fatalf("Response code = %v; want %v", res.StatusCode, http.StatusOK)
}
}
// Verify transport doesn't crash when receiving bogus response lacking a :status header.
// Issue 22880.
func TestTransportHandlesInvalidStatuslessResponse(t *testing.T) {
ct := newClientTester(t)
ct.client = func() error {
req, _ := http.NewRequest("GET", "https://dummy.tld/", nil)
_, err := ct.tr.RoundTrip(req)
const substr = "malformed response from server: missing status pseudo header"
if !strings.Contains(fmt.Sprint(err), substr) {
return fmt.Errorf("RoundTrip error = %v; want substring %q", err, substr)
}
return nil
}
ct.server = func() error {
ct.greet()
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
for {
f, err := ct.fr.ReadFrame()
if err != nil {
return err
}
switch f := f.(type) {
case *HeadersFrame:
enc.WriteField(hpack.HeaderField{Name: "content-type", Value: "text/html"}) // no :status header
ct.fr.WriteHeaders(HeadersFrameParam{
StreamID: f.StreamID,
EndHeaders: true,
EndStream: false, // we'll send some DATA to try to crash the transport
BlockFragment: buf.Bytes(),
})
ct.fr.WriteData(f.StreamID, true, []byte("payload"))
return nil
}
}
}
ct.run()
}
func BenchmarkClientRequestHeaders(b *testing.B) {
b.Run(" 0 Headers", func(b *testing.B) { benchSimpleRoundTrip(b, 0) })
b.Run(" 10 Headers", func(b *testing.B) { benchSimpleRoundTrip(b, 10) })
b.Run(" 100 Headers", func(b *testing.B) { benchSimpleRoundTrip(b, 100) })
b.Run("1000 Headers", func(b *testing.B) { benchSimpleRoundTrip(b, 1000) })
}
func activeStreams(cc *ClientConn) int {
cc.mu.Lock()
defer cc.mu.Unlock()
return len(cc.streams)
}
type closeMode int
const (
closeAtHeaders closeMode = iota
closeAtBody
shutdown
shutdownCancel
)
// See golang.org/issue/17292
func testClientConnClose(t *testing.T, closeMode closeMode) {
clientDone := make(chan struct{})
defer close(clientDone)
handlerDone := make(chan struct{})
closeDone := make(chan struct{})
beforeHeader := func() {}
bodyWrite := func(w http.ResponseWriter) {}
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
defer close(handlerDone)
beforeHeader()
w.WriteHeader(http.StatusOK)
w.(http.Flusher).Flush()
bodyWrite(w)
select {
case <-w.(http.CloseNotifier).CloseNotify():
// client closed connection before completion
if closeMode == shutdown || closeMode == shutdownCancel {
t.Error("expected request to complete")
}
case <-clientDone:
if closeMode == closeAtHeaders || closeMode == closeAtBody {
t.Error("expected connection closed by client")
}
}
}, optOnlyServer)
defer st.Close()
tr := &Transport{TLSClientConfig: tlsConfigInsecure}
defer tr.CloseIdleConnections()
cc, err := tr.dialClientConn(st.ts.Listener.Addr().String(), false)
req, err := http.NewRequest("GET", st.ts.URL, nil)
if err != nil {
t.Fatal(err)
}
if closeMode == closeAtHeaders {
beforeHeader = func() {
if err := cc.Close(); err != nil {
t.Error(err)
}
close(closeDone)
}
}
var sendBody chan struct{}
if closeMode == closeAtBody {
sendBody = make(chan struct{})
bodyWrite = func(w http.ResponseWriter) {
<-sendBody
b := make([]byte, 32)
w.Write(b)
w.(http.Flusher).Flush()
if err := cc.Close(); err != nil {
t.Errorf("unexpected ClientConn close error: %v", err)
}
close(closeDone)
w.Write(b)
w.(http.Flusher).Flush()
}
}
res, err := cc.RoundTrip(req)
if res != nil {
defer res.Body.Close()
}
if closeMode == closeAtHeaders {
got := fmt.Sprint(err)
want := "http2: client connection force closed via ClientConn.Close"
if got != want {
t.Fatalf("RoundTrip error = %v, want %v", got, want)
}
} else {
if err != nil {
t.Fatalf("RoundTrip: %v", err)
}
if got, want := activeStreams(cc), 1; got != want {
t.Errorf("got %d active streams, want %d", got, want)
}
}
switch closeMode {
case shutdownCancel:
if err = cc.Shutdown(canceledCtx); err != errCanceled {
t.Errorf("got %v, want %v", err, errCanceled)
}
if cc.closing == false {
t.Error("expected closing to be true")
}
if cc.CanTakeNewRequest() == true {
t.Error("CanTakeNewRequest to return false")
}
if v, want := len(cc.streams), 1; v != want {
t.Errorf("expected %d active streams, got %d", want, v)
}
clientDone <- struct{}{}
<-handlerDone
case shutdown:
wait := make(chan struct{})
shutdownEnterWaitStateHook = func() {
close(wait)
shutdownEnterWaitStateHook = func() {}
}
defer func() { shutdownEnterWaitStateHook = func() {} }()
shutdown := make(chan struct{}, 1)
go func() {
if err = cc.Shutdown(context.Background()); err != nil {
t.Error(err)
}
close(shutdown)
}()
// Let the shutdown to enter wait state
<-wait
cc.mu.Lock()
if cc.closing == false {
t.Error("expected closing to be true")
}
cc.mu.Unlock()
if cc.CanTakeNewRequest() == true {
t.Error("CanTakeNewRequest to return false")
}
if got, want := activeStreams(cc), 1; got != want {
t.Errorf("got %d active streams, want %d", got, want)
}
// Let the active request finish
clientDone <- struct{}{}
// Wait for the shutdown to end
select {
case <-shutdown:
case <-time.After(2 * time.Second):
t.Fatal("expected server connection to close")
}
case closeAtHeaders, closeAtBody:
if closeMode == closeAtBody {
go close(sendBody)
if _, err := io.Copy(ioutil.Discard, res.Body); err == nil {
t.Error("expected a Copy error, got nil")
}
}
<-closeDone
if got, want := activeStreams(cc), 0; got != want {
t.Errorf("got %d active streams, want %d", got, want)
}
// wait for server to get the connection close notice
select {
case <-handlerDone:
case <-time.After(2 * time.Second):
t.Fatal("expected server connection to close")
}
}
}
// The client closes the connection just after the server got the client's HEADERS
// frame, but before the server sends its HEADERS response back. The expected
// result is an error on RoundTrip explaining the client closed the connection.
func TestClientConnCloseAtHeaders(t *testing.T) {
testClientConnClose(t, closeAtHeaders)
}
// The client closes the connection between two server's response DATA frames.
// The expected behavior is a response body io read error on the client.
func TestClientConnCloseAtBody(t *testing.T) {
testClientConnClose(t, closeAtBody)
}
// The client sends a GOAWAY frame before the server finished processing a request.
// We expect the connection not to close until the request is completed.
func TestClientConnShutdown(t *testing.T) {
testClientConnClose(t, shutdown)
}
// The client sends a GOAWAY frame before the server finishes processing a request,
// but cancels the passed context before the request is completed. The expected
// behavior is the client closing the connection after the context is canceled.
func TestClientConnShutdownCancel(t *testing.T) {
testClientConnClose(t, shutdownCancel)
}
// Issue 25009: use Request.GetBody if present, even if it seems like
// we might not need it. Apparently something else can still read from
// the original request body. Data race? In any case, rewinding
// unconditionally on retry is a nicer model anyway and should
// simplify code in the future (after the Go 1.11 freeze)
func TestTransportUsesGetBodyWhenPresent(t *testing.T) {
calls := 0
someBody := func() io.ReadCloser {
return struct{ io.ReadCloser }{ioutil.NopCloser(bytes.NewReader(nil))}
}
req := &http.Request{
Body: someBody(),
GetBody: func() (io.ReadCloser, error) {
calls++
return someBody(), nil
},
}
afterBodyWrite := false // pretend we haven't read+written the body yet
req2, err := shouldRetryRequest(req, errClientConnUnusable, afterBodyWrite)
if err != nil {
t.Fatal(err)
}
if calls != 1 {
t.Errorf("Calls = %d; want 1", calls)
}
if req2 == req {
t.Error("req2 changed")
}
if req2 == nil {
t.Fatal("req2 is nil")
}
if req2.Body == nil {
t.Fatal("req2.Body is nil")
}
if req2.GetBody == nil {
t.Fatal("req2.GetBody is nil")
}
if req2.Body == req.Body {
t.Error("req2.Body unchanged")
}
}
// Issue 22891: verify that the "https" altproto we register with net/http
// is a certain type: a struct with one field with our *http2.Transport in it.
func TestNoDialH2RoundTripperType(t *testing.T) {
t1 := new(http.Transport)
t2 := new(Transport)
rt := noDialH2RoundTripper{t2}
if err := registerHTTPSProtocol(t1, rt); err != nil {
t.Fatal(err)
}
rv := reflect.ValueOf(rt)
if rv.Type().Kind() != reflect.Struct {
t.Fatalf("kind = %v; net/http expects struct", rv.Type().Kind())
}
if n := rv.Type().NumField(); n != 1 {
t.Fatalf("fields = %d; net/http expects 1", n)
}
v := rv.Field(0)
if _, ok := v.Interface().(*Transport); !ok {
t.Fatalf("wrong kind %T; want *Transport", v.Interface())
}
}
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