/usr/share/gocode/src/github.com/bradfitz/http2/server_test.go is in golang-github-bradfitz-http2-dev 0.0~git20150509-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 | // Copyright 2014 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.
// See https://code.google.com/p/go/source/browse/CONTRIBUTORS
// Licensed under the same terms as Go itself:
// https://code.google.com/p/go/source/browse/LICENSE
package http2
import (
"bytes"
"crypto/tls"
"errors"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"net"
"net/http"
"net/http/httptest"
"os"
"reflect"
"runtime"
"strconv"
"strings"
"sync"
"sync/atomic"
"testing"
"time"
"github.com/bradfitz/http2/hpack"
)
var stderrVerbose = flag.Bool("stderr_verbose", false, "Mirror verbosity to stderr, unbuffered")
type serverTester struct {
cc net.Conn // client conn
t testing.TB
ts *httptest.Server
fr *Framer
logBuf *bytes.Buffer
logFilter []string // substrings to filter out
scMu sync.Mutex // guards sc
sc *serverConn
// writing headers:
headerBuf bytes.Buffer
hpackEnc *hpack.Encoder
// reading frames:
frc chan Frame
frErrc chan error
readTimer *time.Timer
}
func init() {
testHookOnPanicMu = new(sync.Mutex)
}
func resetHooks() {
testHookOnPanicMu.Lock()
testHookOnPanic = nil
testHookOnPanicMu.Unlock()
}
type serverTesterOpt string
var optOnlyServer = serverTesterOpt("only_server")
func newServerTester(t testing.TB, handler http.HandlerFunc, opts ...interface{}) *serverTester {
resetHooks()
logBuf := new(bytes.Buffer)
ts := httptest.NewUnstartedServer(handler)
tlsConfig := &tls.Config{
InsecureSkipVerify: true,
// The h2-14 is temporary, until curl is updated. (as used by unit tests
// in Docker)
NextProtos: []string{NextProtoTLS, "h2-14"},
}
onlyServer := false
for _, opt := range opts {
switch v := opt.(type) {
case func(*tls.Config):
v(tlsConfig)
case func(*httptest.Server):
v(ts)
case serverTesterOpt:
onlyServer = (v == optOnlyServer)
default:
t.Fatalf("unknown newServerTester option type %T", v)
}
}
ConfigureServer(ts.Config, &Server{})
st := &serverTester{
t: t,
ts: ts,
logBuf: logBuf,
frc: make(chan Frame, 1),
frErrc: make(chan error, 1),
}
st.hpackEnc = hpack.NewEncoder(&st.headerBuf)
var stderrv io.Writer = ioutil.Discard
if *stderrVerbose {
stderrv = os.Stderr
}
ts.TLS = ts.Config.TLSConfig // the httptest.Server has its own copy of this TLS config
ts.Config.ErrorLog = log.New(io.MultiWriter(stderrv, twriter{t: t, st: st}, logBuf), "", log.LstdFlags)
ts.StartTLS()
if VerboseLogs {
t.Logf("Running test server at: %s", ts.URL)
}
testHookGetServerConn = func(v *serverConn) {
st.scMu.Lock()
defer st.scMu.Unlock()
st.sc = v
st.sc.testHookCh = make(chan func())
}
log.SetOutput(io.MultiWriter(stderrv, twriter{t: t, st: st}))
if !onlyServer {
cc, err := tls.Dial("tcp", ts.Listener.Addr().String(), tlsConfig)
if err != nil {
t.Fatal(err)
}
st.cc = cc
st.fr = NewFramer(cc, cc)
}
return st
}
func (st *serverTester) closeConn() {
st.scMu.Lock()
defer st.scMu.Unlock()
st.sc.conn.Close()
}
func (st *serverTester) addLogFilter(phrase string) {
st.logFilter = append(st.logFilter, phrase)
}
func (st *serverTester) stream(id uint32) *stream {
ch := make(chan *stream, 1)
st.sc.testHookCh <- func() {
ch <- st.sc.streams[id]
}
return <-ch
}
func (st *serverTester) streamState(id uint32) streamState {
ch := make(chan streamState, 1)
st.sc.testHookCh <- func() {
state, _ := st.sc.state(id)
ch <- state
}
return <-ch
}
func (st *serverTester) Close() {
st.ts.Close()
if st.cc != nil {
st.cc.Close()
}
log.SetOutput(os.Stderr)
}
// greet initiates the client's HTTP/2 connection into a state where
// frames may be sent.
func (st *serverTester) greet() {
st.writePreface()
st.writeInitialSettings()
st.wantSettings()
st.writeSettingsAck()
st.wantSettingsAck()
}
func (st *serverTester) writePreface() {
n, err := st.cc.Write(clientPreface)
if err != nil {
st.t.Fatalf("Error writing client preface: %v", err)
}
if n != len(clientPreface) {
st.t.Fatalf("Writing client preface, wrote %d bytes; want %d", n, len(clientPreface))
}
}
func (st *serverTester) writeInitialSettings() {
if err := st.fr.WriteSettings(); err != nil {
st.t.Fatalf("Error writing initial SETTINGS frame from client to server: %v", err)
}
}
func (st *serverTester) writeSettingsAck() {
if err := st.fr.WriteSettingsAck(); err != nil {
st.t.Fatalf("Error writing ACK of server's SETTINGS: %v", err)
}
}
func (st *serverTester) writeHeaders(p HeadersFrameParam) {
if err := st.fr.WriteHeaders(p); err != nil {
st.t.Fatalf("Error writing HEADERS: %v", err)
}
}
func (st *serverTester) encodeHeaderField(k, v string) {
err := st.hpackEnc.WriteField(hpack.HeaderField{Name: k, Value: v})
if err != nil {
st.t.Fatalf("HPACK encoding error for %q/%q: %v", k, v, err)
}
}
// encodeHeader encodes headers and returns their HPACK bytes. headers
// must contain an even number of key/value pairs. There may be
// multiple pairs for keys (e.g. "cookie"). The :method, :path, and
// :scheme headers default to GET, / and https.
func (st *serverTester) encodeHeader(headers ...string) []byte {
if len(headers)%2 == 1 {
panic("odd number of kv args")
}
st.headerBuf.Reset()
if len(headers) == 0 {
// Fast path, mostly for benchmarks, so test code doesn't pollute
// profiles when we're looking to improve server allocations.
st.encodeHeaderField(":method", "GET")
st.encodeHeaderField(":path", "/")
st.encodeHeaderField(":scheme", "https")
return st.headerBuf.Bytes()
}
if len(headers) == 2 && headers[0] == ":method" {
// Another fast path for benchmarks.
st.encodeHeaderField(":method", headers[1])
st.encodeHeaderField(":path", "/")
st.encodeHeaderField(":scheme", "https")
return st.headerBuf.Bytes()
}
pseudoCount := map[string]int{}
keys := []string{":method", ":path", ":scheme"}
vals := map[string][]string{
":method": {"GET"},
":path": {"/"},
":scheme": {"https"},
}
for len(headers) > 0 {
k, v := headers[0], headers[1]
headers = headers[2:]
if _, ok := vals[k]; !ok {
keys = append(keys, k)
}
if strings.HasPrefix(k, ":") {
pseudoCount[k]++
if pseudoCount[k] == 1 {
vals[k] = []string{v}
} else {
// Allows testing of invalid headers w/ dup pseudo fields.
vals[k] = append(vals[k], v)
}
} else {
vals[k] = append(vals[k], v)
}
}
st.headerBuf.Reset()
for _, k := range keys {
for _, v := range vals[k] {
st.encodeHeaderField(k, v)
}
}
return st.headerBuf.Bytes()
}
// bodylessReq1 writes a HEADERS frames with StreamID 1 and EndStream and EndHeaders set.
func (st *serverTester) bodylessReq1(headers ...string) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(headers...),
EndStream: true,
EndHeaders: true,
})
}
func (st *serverTester) writeData(streamID uint32, endStream bool, data []byte) {
if err := st.fr.WriteData(streamID, endStream, data); err != nil {
st.t.Fatalf("Error writing DATA: %v", err)
}
}
func (st *serverTester) readFrame() (Frame, error) {
go func() {
fr, err := st.fr.ReadFrame()
if err != nil {
st.frErrc <- err
} else {
st.frc <- fr
}
}()
t := st.readTimer
if t == nil {
t = time.NewTimer(2 * time.Second)
st.readTimer = t
}
t.Reset(2 * time.Second)
defer t.Stop()
select {
case f := <-st.frc:
return f, nil
case err := <-st.frErrc:
return nil, err
case <-t.C:
return nil, errors.New("timeout waiting for frame")
}
}
func (st *serverTester) wantHeaders() *HeadersFrame {
f, err := st.readFrame()
if err != nil {
st.t.Fatalf("Error while expecting a HEADERS frame: %v", err)
}
hf, ok := f.(*HeadersFrame)
if !ok {
st.t.Fatalf("got a %T; want *HeadersFrame", f)
}
return hf
}
func (st *serverTester) wantContinuation() *ContinuationFrame {
f, err := st.readFrame()
if err != nil {
st.t.Fatalf("Error while expecting a CONTINUATION frame: %v", err)
}
cf, ok := f.(*ContinuationFrame)
if !ok {
st.t.Fatalf("got a %T; want *ContinuationFrame", f)
}
return cf
}
func (st *serverTester) wantData() *DataFrame {
f, err := st.readFrame()
if err != nil {
st.t.Fatalf("Error while expecting a DATA frame: %v", err)
}
df, ok := f.(*DataFrame)
if !ok {
st.t.Fatalf("got a %T; want *DataFrame", f)
}
return df
}
func (st *serverTester) wantSettings() *SettingsFrame {
f, err := st.readFrame()
if err != nil {
st.t.Fatalf("Error while expecting a SETTINGS frame: %v", err)
}
sf, ok := f.(*SettingsFrame)
if !ok {
st.t.Fatalf("got a %T; want *SettingsFrame", f)
}
return sf
}
func (st *serverTester) wantPing() *PingFrame {
f, err := st.readFrame()
if err != nil {
st.t.Fatalf("Error while expecting a PING frame: %v", err)
}
pf, ok := f.(*PingFrame)
if !ok {
st.t.Fatalf("got a %T; want *PingFrame", f)
}
return pf
}
func (st *serverTester) wantGoAway() *GoAwayFrame {
f, err := st.readFrame()
if err != nil {
st.t.Fatalf("Error while expecting a GOAWAY frame: %v", err)
}
gf, ok := f.(*GoAwayFrame)
if !ok {
st.t.Fatalf("got a %T; want *GoAwayFrame", f)
}
return gf
}
func (st *serverTester) wantRSTStream(streamID uint32, errCode ErrCode) {
f, err := st.readFrame()
if err != nil {
st.t.Fatalf("Error while expecting an RSTStream frame: %v", err)
}
rs, ok := f.(*RSTStreamFrame)
if !ok {
st.t.Fatalf("got a %T; want *RSTStreamFrame", f)
}
if rs.FrameHeader.StreamID != streamID {
st.t.Fatalf("RSTStream StreamID = %d; want %d", rs.FrameHeader.StreamID, streamID)
}
if rs.ErrCode != errCode {
st.t.Fatalf("RSTStream ErrCode = %d (%s); want %d (%s)", rs.ErrCode, rs.ErrCode, errCode, errCode)
}
}
func (st *serverTester) wantWindowUpdate(streamID, incr uint32) {
f, err := st.readFrame()
if err != nil {
st.t.Fatalf("Error while expecting a WINDOW_UPDATE frame: %v", err)
}
wu, ok := f.(*WindowUpdateFrame)
if !ok {
st.t.Fatalf("got a %T; want *WindowUpdateFrame", f)
}
if wu.FrameHeader.StreamID != streamID {
st.t.Fatalf("WindowUpdate StreamID = %d; want %d", wu.FrameHeader.StreamID, streamID)
}
if wu.Increment != incr {
st.t.Fatalf("WindowUpdate increment = %d; want %d", wu.Increment, incr)
}
}
func (st *serverTester) wantSettingsAck() {
f, err := st.readFrame()
if err != nil {
st.t.Fatal(err)
}
sf, ok := f.(*SettingsFrame)
if !ok {
st.t.Fatalf("Wanting a settings ACK, received a %T", f)
}
if !sf.Header().Flags.Has(FlagSettingsAck) {
st.t.Fatal("Settings Frame didn't have ACK set")
}
}
func TestServer(t *testing.T) {
gotReq := make(chan bool, 1)
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Foo", "Bar")
gotReq <- true
})
defer st.Close()
covers("3.5", `
The server connection preface consists of a potentially empty
SETTINGS frame ([SETTINGS]) that MUST be the first frame the
server sends in the HTTP/2 connection.
`)
st.writePreface()
st.writeInitialSettings()
st.wantSettings()
st.writeSettingsAck()
st.wantSettingsAck()
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(),
EndStream: true, // no DATA frames
EndHeaders: true,
})
select {
case <-gotReq:
case <-time.After(2 * time.Second):
t.Error("timeout waiting for request")
}
}
func TestServer_Request_Get(t *testing.T) {
testServerRequest(t, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader("foo-bar", "some-value"),
EndStream: true, // no DATA frames
EndHeaders: true,
})
}, func(r *http.Request) {
if r.Method != "GET" {
t.Errorf("Method = %q; want GET", r.Method)
}
if r.URL.Path != "/" {
t.Errorf("URL.Path = %q; want /", r.URL.Path)
}
if r.ContentLength != 0 {
t.Errorf("ContentLength = %v; want 0", r.ContentLength)
}
if r.Close {
t.Error("Close = true; want false")
}
if !strings.Contains(r.RemoteAddr, ":") {
t.Errorf("RemoteAddr = %q; want something with a colon", r.RemoteAddr)
}
if r.Proto != "HTTP/2.0" || r.ProtoMajor != 2 || r.ProtoMinor != 0 {
t.Errorf("Proto = %q Major=%v,Minor=%v; want HTTP/2.0", r.Proto, r.ProtoMajor, r.ProtoMinor)
}
wantHeader := http.Header{
"Foo-Bar": []string{"some-value"},
}
if !reflect.DeepEqual(r.Header, wantHeader) {
t.Errorf("Header = %#v; want %#v", r.Header, wantHeader)
}
if n, err := r.Body.Read([]byte(" ")); err != io.EOF || n != 0 {
t.Errorf("Read = %d, %v; want 0, EOF", n, err)
}
})
}
func TestServer_Request_Get_PathSlashes(t *testing.T) {
testServerRequest(t, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(":path", "/%2f/"),
EndStream: true, // no DATA frames
EndHeaders: true,
})
}, func(r *http.Request) {
if r.RequestURI != "/%2f/" {
t.Errorf("RequestURI = %q; want /%%2f/", r.RequestURI)
}
if r.URL.Path != "///" {
t.Errorf("URL.Path = %q; want ///", r.URL.Path)
}
})
}
// TODO: add a test with EndStream=true on the HEADERS but setting a
// Content-Length anyway. Should we just omit it and force it to
// zero?
func TestServer_Request_Post_NoContentLength_EndStream(t *testing.T) {
testServerRequest(t, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(":method", "POST"),
EndStream: true,
EndHeaders: true,
})
}, func(r *http.Request) {
if r.Method != "POST" {
t.Errorf("Method = %q; want POST", r.Method)
}
if r.ContentLength != 0 {
t.Errorf("ContentLength = %v; want 0", r.ContentLength)
}
if n, err := r.Body.Read([]byte(" ")); err != io.EOF || n != 0 {
t.Errorf("Read = %d, %v; want 0, EOF", n, err)
}
})
}
func TestServer_Request_Post_Body_ImmediateEOF(t *testing.T) {
testBodyContents(t, -1, "", func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(":method", "POST"),
EndStream: false, // to say DATA frames are coming
EndHeaders: true,
})
st.writeData(1, true, nil) // just kidding. empty body.
})
}
func TestServer_Request_Post_Body_OneData(t *testing.T) {
const content = "Some content"
testBodyContents(t, -1, content, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(":method", "POST"),
EndStream: false, // to say DATA frames are coming
EndHeaders: true,
})
st.writeData(1, true, []byte(content))
})
}
func TestServer_Request_Post_Body_TwoData(t *testing.T) {
const content = "Some content"
testBodyContents(t, -1, content, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(":method", "POST"),
EndStream: false, // to say DATA frames are coming
EndHeaders: true,
})
st.writeData(1, false, []byte(content[:5]))
st.writeData(1, true, []byte(content[5:]))
})
}
func TestServer_Request_Post_Body_ContentLength_Correct(t *testing.T) {
const content = "Some content"
testBodyContents(t, int64(len(content)), content, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(
":method", "POST",
"content-length", strconv.Itoa(len(content)),
),
EndStream: false, // to say DATA frames are coming
EndHeaders: true,
})
st.writeData(1, true, []byte(content))
})
}
func TestServer_Request_Post_Body_ContentLength_TooLarge(t *testing.T) {
testBodyContentsFail(t, 3, "request declared a Content-Length of 3 but only wrote 2 bytes",
func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(
":method", "POST",
"content-length", "3",
),
EndStream: false, // to say DATA frames are coming
EndHeaders: true,
})
st.writeData(1, true, []byte("12"))
})
}
func TestServer_Request_Post_Body_ContentLength_TooSmall(t *testing.T) {
testBodyContentsFail(t, 4, "sender tried to send more than declared Content-Length of 4 bytes",
func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(
":method", "POST",
"content-length", "4",
),
EndStream: false, // to say DATA frames are coming
EndHeaders: true,
})
st.writeData(1, true, []byte("12345"))
})
}
func testBodyContents(t *testing.T, wantContentLength int64, wantBody string, write func(st *serverTester)) {
testServerRequest(t, write, func(r *http.Request) {
if r.Method != "POST" {
t.Errorf("Method = %q; want POST", r.Method)
}
if r.ContentLength != wantContentLength {
t.Errorf("ContentLength = %v; want %d", r.ContentLength, wantContentLength)
}
all, err := ioutil.ReadAll(r.Body)
if err != nil {
t.Fatal(err)
}
if string(all) != wantBody {
t.Errorf("Read = %q; want %q", all, wantBody)
}
if err := r.Body.Close(); err != nil {
t.Fatalf("Close: %v", err)
}
})
}
func testBodyContentsFail(t *testing.T, wantContentLength int64, wantReadError string, write func(st *serverTester)) {
testServerRequest(t, write, func(r *http.Request) {
if r.Method != "POST" {
t.Errorf("Method = %q; want POST", r.Method)
}
if r.ContentLength != wantContentLength {
t.Errorf("ContentLength = %v; want %d", r.ContentLength, wantContentLength)
}
all, err := ioutil.ReadAll(r.Body)
if err == nil {
t.Fatalf("expected an error (%q) reading from the body. Successfully read %q instead.",
wantReadError, all)
}
if !strings.Contains(err.Error(), wantReadError) {
t.Fatalf("Body.Read = %v; want substring %q", err, wantReadError)
}
if err := r.Body.Close(); err != nil {
t.Fatalf("Close: %v", err)
}
})
}
// Using a Host header, instead of :authority
func TestServer_Request_Get_Host(t *testing.T) {
const host = "example.com"
testServerRequest(t, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader("host", host),
EndStream: true,
EndHeaders: true,
})
}, func(r *http.Request) {
if r.Host != host {
t.Errorf("Host = %q; want %q", r.Host, host)
}
})
}
// Using an :authority pseudo-header, instead of Host
func TestServer_Request_Get_Authority(t *testing.T) {
const host = "example.com"
testServerRequest(t, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(":authority", host),
EndStream: true,
EndHeaders: true,
})
}, func(r *http.Request) {
if r.Host != host {
t.Errorf("Host = %q; want %q", r.Host, host)
}
})
}
func TestServer_Request_WithContinuation(t *testing.T) {
wantHeader := http.Header{
"Foo-One": []string{"value-one"},
"Foo-Two": []string{"value-two"},
"Foo-Three": []string{"value-three"},
}
testServerRequest(t, func(st *serverTester) {
fullHeaders := st.encodeHeader(
"foo-one", "value-one",
"foo-two", "value-two",
"foo-three", "value-three",
)
remain := fullHeaders
chunks := 0
for len(remain) > 0 {
const maxChunkSize = 5
chunk := remain
if len(chunk) > maxChunkSize {
chunk = chunk[:maxChunkSize]
}
remain = remain[len(chunk):]
if chunks == 0 {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: chunk,
EndStream: true, // no DATA frames
EndHeaders: false, // we'll have continuation frames
})
} else {
err := st.fr.WriteContinuation(1, len(remain) == 0, chunk)
if err != nil {
t.Fatal(err)
}
}
chunks++
}
if chunks < 2 {
t.Fatal("too few chunks")
}
}, func(r *http.Request) {
if !reflect.DeepEqual(r.Header, wantHeader) {
t.Errorf("Header = %#v; want %#v", r.Header, wantHeader)
}
})
}
// Concatenated cookie headers. ("8.1.2.5 Compressing the Cookie Header Field")
func TestServer_Request_CookieConcat(t *testing.T) {
const host = "example.com"
testServerRequest(t, func(st *serverTester) {
st.bodylessReq1(
":authority", host,
"cookie", "a=b",
"cookie", "c=d",
"cookie", "e=f",
)
}, func(r *http.Request) {
const want = "a=b; c=d; e=f"
if got := r.Header.Get("Cookie"); got != want {
t.Errorf("Cookie = %q; want %q", got, want)
}
})
}
func TestServer_Request_Reject_CapitalHeader(t *testing.T) {
testRejectRequest(t, func(st *serverTester) { st.bodylessReq1("UPPER", "v") })
}
func TestServer_Request_Reject_Pseudo_Missing_method(t *testing.T) {
testRejectRequest(t, func(st *serverTester) { st.bodylessReq1(":method", "") })
}
func TestServer_Request_Reject_Pseudo_ExactlyOne(t *testing.T) {
// 8.1.2.3 Request Pseudo-Header Fields
// "All HTTP/2 requests MUST include exactly one valid value" ...
testRejectRequest(t, func(st *serverTester) {
st.addLogFilter("duplicate pseudo-header")
st.bodylessReq1(":method", "GET", ":method", "POST")
})
}
func TestServer_Request_Reject_Pseudo_AfterRegular(t *testing.T) {
// 8.1.2.3 Request Pseudo-Header Fields
// "All pseudo-header fields MUST appear in the header block
// before regular header fields. Any request or response that
// contains a pseudo-header field that appears in a header
// block after a regular header field MUST be treated as
// malformed (Section 8.1.2.6)."
testRejectRequest(t, func(st *serverTester) {
st.addLogFilter("pseudo-header after regular header")
var buf bytes.Buffer
enc := hpack.NewEncoder(&buf)
enc.WriteField(hpack.HeaderField{Name: ":method", Value: "GET"})
enc.WriteField(hpack.HeaderField{Name: "regular", Value: "foobar"})
enc.WriteField(hpack.HeaderField{Name: ":path", Value: "/"})
enc.WriteField(hpack.HeaderField{Name: ":scheme", Value: "https"})
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: buf.Bytes(),
EndStream: true,
EndHeaders: true,
})
})
}
func TestServer_Request_Reject_Pseudo_Missing_path(t *testing.T) {
testRejectRequest(t, func(st *serverTester) { st.bodylessReq1(":path", "") })
}
func TestServer_Request_Reject_Pseudo_Missing_scheme(t *testing.T) {
testRejectRequest(t, func(st *serverTester) { st.bodylessReq1(":scheme", "") })
}
func TestServer_Request_Reject_Pseudo_scheme_invalid(t *testing.T) {
testRejectRequest(t, func(st *serverTester) { st.bodylessReq1(":scheme", "bogus") })
}
func TestServer_Request_Reject_Pseudo_Unknown(t *testing.T) {
testRejectRequest(t, func(st *serverTester) {
st.addLogFilter(`invalid pseudo-header ":unknown_thing"`)
st.bodylessReq1(":unknown_thing", "")
})
}
func testRejectRequest(t *testing.T, send func(*serverTester)) {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
t.Fatal("server request made it to handler; should've been rejected")
})
defer st.Close()
st.greet()
send(st)
st.wantRSTStream(1, ErrCodeProtocol)
}
func TestServer_Ping(t *testing.T) {
st := newServerTester(t, nil)
defer st.Close()
st.greet()
// Server should ignore this one, since it has ACK set.
ackPingData := [8]byte{1, 2, 4, 8, 16, 32, 64, 128}
if err := st.fr.WritePing(true, ackPingData); err != nil {
t.Fatal(err)
}
// But the server should reply to this one, since ACK is false.
pingData := [8]byte{1, 2, 3, 4, 5, 6, 7, 8}
if err := st.fr.WritePing(false, pingData); err != nil {
t.Fatal(err)
}
pf := st.wantPing()
if !pf.Flags.Has(FlagPingAck) {
t.Error("response ping doesn't have ACK set")
}
if pf.Data != pingData {
t.Errorf("response ping has data %q; want %q", pf.Data, pingData)
}
}
func TestServer_RejectsLargeFrames(t *testing.T) {
st := newServerTester(t, nil)
defer st.Close()
st.greet()
// Write too large of a frame (too large by one byte)
// We ignore the return value because it's expected that the server
// will only read the first 9 bytes (the headre) and then disconnect.
st.fr.WriteRawFrame(0xff, 0, 0, make([]byte, defaultMaxReadFrameSize+1))
gf := st.wantGoAway()
if gf.ErrCode != ErrCodeFrameSize {
t.Errorf("GOAWAY err = %v; want %v", gf.ErrCode, ErrCodeFrameSize)
}
}
func TestServer_Handler_Sends_WindowUpdate(t *testing.T) {
puppet := newHandlerPuppet()
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
puppet.act(w, r)
})
defer st.Close()
defer puppet.done()
st.greet()
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(":method", "POST"),
EndStream: false, // data coming
EndHeaders: true,
})
st.writeData(1, false, []byte("abcdef"))
puppet.do(readBodyHandler(t, "abc"))
st.wantWindowUpdate(0, 3)
st.wantWindowUpdate(1, 3)
puppet.do(readBodyHandler(t, "def"))
st.wantWindowUpdate(0, 3)
st.wantWindowUpdate(1, 3)
st.writeData(1, true, []byte("ghijkl")) // END_STREAM here
puppet.do(readBodyHandler(t, "ghi"))
puppet.do(readBodyHandler(t, "jkl"))
st.wantWindowUpdate(0, 3)
st.wantWindowUpdate(0, 3) // no more stream-level, since END_STREAM
}
func TestServer_Send_GoAway_After_Bogus_WindowUpdate(t *testing.T) {
st := newServerTester(t, nil)
defer st.Close()
st.greet()
if err := st.fr.WriteWindowUpdate(0, 1<<31-1); err != nil {
t.Fatal(err)
}
gf := st.wantGoAway()
if gf.ErrCode != ErrCodeFlowControl {
t.Errorf("GOAWAY err = %v; want %v", gf.ErrCode, ErrCodeFlowControl)
}
if gf.LastStreamID != 0 {
t.Errorf("GOAWAY last stream ID = %v; want %v", gf.LastStreamID, 0)
}
}
func TestServer_Send_RstStream_After_Bogus_WindowUpdate(t *testing.T) {
inHandler := make(chan bool)
blockHandler := make(chan bool)
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
inHandler <- true
<-blockHandler
})
defer st.Close()
defer close(blockHandler)
st.greet()
st.writeHeaders(HeadersFrameParam{
StreamID: 1,
BlockFragment: st.encodeHeader(":method", "POST"),
EndStream: false, // keep it open
EndHeaders: true,
})
<-inHandler
// Send a bogus window update:
if err := st.fr.WriteWindowUpdate(1, 1<<31-1); err != nil {
t.Fatal(err)
}
st.wantRSTStream(1, ErrCodeFlowControl)
}
// testServerPostUnblock sends a hanging POST with unsent data to handler,
// then runs fn once in the handler, and verifies that the error returned from
// handler is acceptable. It fails if takes over 5 seconds for handler to exit.
func testServerPostUnblock(t *testing.T,
handler func(http.ResponseWriter, *http.Request) error,
fn func(*serverTester),
checkErr func(error),
otherHeaders ...string) {
inHandler := make(chan bool)
errc := make(chan error, 1)
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
inHandler <- true
errc <- handler(w, r)
})
st.greet()
st.writeHeaders(HeadersFrameParam{
StreamID: 1,
BlockFragment: st.encodeHeader(append([]string{":method", "POST"}, otherHeaders...)...),
EndStream: false, // keep it open
EndHeaders: true,
})
<-inHandler
fn(st)
select {
case err := <-errc:
if checkErr != nil {
checkErr(err)
}
case <-time.After(5 * time.Second):
t.Fatal("timeout waiting for Handler to return")
}
st.Close()
}
func TestServer_RSTStream_Unblocks_Read(t *testing.T) {
testServerPostUnblock(t,
func(w http.ResponseWriter, r *http.Request) (err error) {
_, err = r.Body.Read(make([]byte, 1))
return
},
func(st *serverTester) {
if err := st.fr.WriteRSTStream(1, ErrCodeCancel); err != nil {
t.Fatal(err)
}
},
func(err error) {
if err == nil {
t.Error("unexpected nil error from Request.Body.Read")
}
},
)
}
func TestServer_DeadConn_Unblocks_Read(t *testing.T) {
testServerPostUnblock(t,
func(w http.ResponseWriter, r *http.Request) (err error) {
_, err = r.Body.Read(make([]byte, 1))
return
},
func(st *serverTester) { st.cc.Close() },
func(err error) {
if err == nil {
t.Error("unexpected nil error from Request.Body.Read")
}
},
)
}
var blockUntilClosed = func(w http.ResponseWriter, r *http.Request) error {
<-w.(http.CloseNotifier).CloseNotify()
return nil
}
func TestServer_CloseNotify_After_RSTStream(t *testing.T) {
testServerPostUnblock(t, blockUntilClosed, func(st *serverTester) {
if err := st.fr.WriteRSTStream(1, ErrCodeCancel); err != nil {
t.Fatal(err)
}
}, nil)
}
func TestServer_CloseNotify_After_ConnClose(t *testing.T) {
testServerPostUnblock(t, blockUntilClosed, func(st *serverTester) { st.cc.Close() }, nil)
}
// that CloseNotify unblocks after a stream error due to the client's
// problem that's unrelated to them explicitly canceling it (which is
// TestServer_CloseNotify_After_RSTStream above)
func TestServer_CloseNotify_After_StreamError(t *testing.T) {
testServerPostUnblock(t, blockUntilClosed, func(st *serverTester) {
// data longer than declared Content-Length => stream error
st.writeData(1, true, []byte("1234"))
}, nil, "content-length", "3")
}
func TestServer_StateTransitions(t *testing.T) {
var st *serverTester
inHandler := make(chan bool)
writeData := make(chan bool)
leaveHandler := make(chan bool)
st = newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
inHandler <- true
if st.stream(1) == nil {
t.Errorf("nil stream 1 in handler")
}
if got, want := st.streamState(1), stateOpen; got != want {
t.Errorf("in handler, state is %v; want %v", got, want)
}
writeData <- true
if n, err := r.Body.Read(make([]byte, 1)); n != 0 || err != io.EOF {
t.Errorf("body read = %d, %v; want 0, EOF", n, err)
}
if got, want := st.streamState(1), stateHalfClosedRemote; got != want {
t.Errorf("in handler, state is %v; want %v", got, want)
}
<-leaveHandler
})
st.greet()
if st.stream(1) != nil {
t.Fatal("stream 1 should be empty")
}
if got := st.streamState(1); got != stateIdle {
t.Fatalf("stream 1 should be idle; got %v", got)
}
st.writeHeaders(HeadersFrameParam{
StreamID: 1,
BlockFragment: st.encodeHeader(":method", "POST"),
EndStream: false, // keep it open
EndHeaders: true,
})
<-inHandler
<-writeData
st.writeData(1, true, nil)
leaveHandler <- true
hf := st.wantHeaders()
if !hf.StreamEnded() {
t.Fatal("expected END_STREAM flag")
}
if got, want := st.streamState(1), stateClosed; got != want {
t.Errorf("at end, state is %v; want %v", got, want)
}
if st.stream(1) != nil {
t.Fatal("at end, stream 1 should be gone")
}
}
// test HEADERS w/o EndHeaders + another HEADERS (should get rejected)
func TestServer_Rejects_HeadersNoEnd_Then_Headers(t *testing.T) {
testServerRejects(t, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1,
BlockFragment: st.encodeHeader(),
EndStream: true,
EndHeaders: false,
})
st.writeHeaders(HeadersFrameParam{ // Not a continuation.
StreamID: 3, // different stream.
BlockFragment: st.encodeHeader(),
EndStream: true,
EndHeaders: true,
})
})
}
// test HEADERS w/o EndHeaders + PING (should get rejected)
func TestServer_Rejects_HeadersNoEnd_Then_Ping(t *testing.T) {
testServerRejects(t, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1,
BlockFragment: st.encodeHeader(),
EndStream: true,
EndHeaders: false,
})
if err := st.fr.WritePing(false, [8]byte{}); err != nil {
t.Fatal(err)
}
})
}
// test HEADERS w/ EndHeaders + a continuation HEADERS (should get rejected)
func TestServer_Rejects_HeadersEnd_Then_Continuation(t *testing.T) {
testServerRejects(t, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1,
BlockFragment: st.encodeHeader(),
EndStream: true,
EndHeaders: true,
})
st.wantHeaders()
if err := st.fr.WriteContinuation(1, true, encodeHeaderNoImplicit(t, "foo", "bar")); err != nil {
t.Fatal(err)
}
})
}
// test HEADERS w/o EndHeaders + a continuation HEADERS on wrong stream ID
func TestServer_Rejects_HeadersNoEnd_Then_ContinuationWrongStream(t *testing.T) {
testServerRejects(t, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1,
BlockFragment: st.encodeHeader(),
EndStream: true,
EndHeaders: false,
})
if err := st.fr.WriteContinuation(3, true, encodeHeaderNoImplicit(t, "foo", "bar")); err != nil {
t.Fatal(err)
}
})
}
// No HEADERS on stream 0.
func TestServer_Rejects_Headers0(t *testing.T) {
testServerRejects(t, func(st *serverTester) {
st.fr.AllowIllegalWrites = true
st.writeHeaders(HeadersFrameParam{
StreamID: 0,
BlockFragment: st.encodeHeader(),
EndStream: true,
EndHeaders: true,
})
})
}
// No CONTINUATION on stream 0.
func TestServer_Rejects_Continuation0(t *testing.T) {
testServerRejects(t, func(st *serverTester) {
st.fr.AllowIllegalWrites = true
if err := st.fr.WriteContinuation(0, true, st.encodeHeader()); err != nil {
t.Fatal(err)
}
})
}
func TestServer_Rejects_PushPromise(t *testing.T) {
testServerRejects(t, func(st *serverTester) {
pp := PushPromiseParam{
StreamID: 1,
PromiseID: 3,
}
if err := st.fr.WritePushPromise(pp); err != nil {
t.Fatal(err)
}
})
}
// testServerRejects tests that the server hangs up with a GOAWAY
// frame and a server close after the client does something
// deserving a CONNECTION_ERROR.
func testServerRejects(t *testing.T, writeReq func(*serverTester)) {
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {})
st.addLogFilter("connection error: PROTOCOL_ERROR")
defer st.Close()
st.greet()
writeReq(st)
st.wantGoAway()
errc := make(chan error, 1)
go func() {
fr, err := st.fr.ReadFrame()
if err == nil {
err = fmt.Errorf("got frame of type %T", fr)
}
errc <- err
}()
select {
case err := <-errc:
if err != io.EOF {
t.Errorf("ReadFrame = %v; want io.EOF", err)
}
case <-time.After(2 * time.Second):
t.Error("timeout waiting for disconnect")
}
}
// testServerRequest sets up an idle HTTP/2 connection and lets you
// write a single request with writeReq, and then verify that the
// *http.Request is built correctly in checkReq.
func testServerRequest(t *testing.T, writeReq func(*serverTester), checkReq func(*http.Request)) {
gotReq := make(chan bool, 1)
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
if r.Body == nil {
t.Fatal("nil Body")
}
checkReq(r)
gotReq <- true
})
defer st.Close()
st.greet()
writeReq(st)
select {
case <-gotReq:
case <-time.After(2 * time.Second):
t.Error("timeout waiting for request")
}
}
func getSlash(st *serverTester) { st.bodylessReq1() }
func TestServer_Response_NoData(t *testing.T) {
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
// Nothing.
return nil
}, func(st *serverTester) {
getSlash(st)
hf := st.wantHeaders()
if !hf.StreamEnded() {
t.Fatal("want END_STREAM flag")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
})
}
func TestServer_Response_NoData_Header_FooBar(t *testing.T) {
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
w.Header().Set("Foo-Bar", "some-value")
return nil
}, func(st *serverTester) {
getSlash(st)
hf := st.wantHeaders()
if !hf.StreamEnded() {
t.Fatal("want END_STREAM flag")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
goth := decodeHeader(t, hf.HeaderBlockFragment())
wanth := [][2]string{
{":status", "200"},
{"foo-bar", "some-value"},
{"content-type", "text/plain; charset=utf-8"},
{"content-length", "0"},
}
if !reflect.DeepEqual(goth, wanth) {
t.Errorf("Got headers %v; want %v", goth, wanth)
}
})
}
func TestServer_Response_Data_Sniff_DoesntOverride(t *testing.T) {
const msg = "<html>this is HTML."
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
w.Header().Set("Content-Type", "foo/bar")
io.WriteString(w, msg)
return nil
}, func(st *serverTester) {
getSlash(st)
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("don't want END_STREAM, expecting data")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
goth := decodeHeader(t, hf.HeaderBlockFragment())
wanth := [][2]string{
{":status", "200"},
{"content-type", "foo/bar"},
{"content-length", strconv.Itoa(len(msg))},
}
if !reflect.DeepEqual(goth, wanth) {
t.Errorf("Got headers %v; want %v", goth, wanth)
}
df := st.wantData()
if !df.StreamEnded() {
t.Error("expected DATA to have END_STREAM flag")
}
if got := string(df.Data()); got != msg {
t.Errorf("got DATA %q; want %q", got, msg)
}
})
}
func TestServer_Response_TransferEncoding_chunked(t *testing.T) {
const msg = "hi"
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
w.Header().Set("Transfer-Encoding", "chunked") // should be stripped
io.WriteString(w, msg)
return nil
}, func(st *serverTester) {
getSlash(st)
hf := st.wantHeaders()
goth := decodeHeader(t, hf.HeaderBlockFragment())
wanth := [][2]string{
{":status", "200"},
{"content-type", "text/plain; charset=utf-8"},
{"content-length", strconv.Itoa(len(msg))},
}
if !reflect.DeepEqual(goth, wanth) {
t.Errorf("Got headers %v; want %v", goth, wanth)
}
})
}
// Header accessed only after the initial write.
func TestServer_Response_Data_IgnoreHeaderAfterWrite_After(t *testing.T) {
const msg = "<html>this is HTML."
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
io.WriteString(w, msg)
w.Header().Set("foo", "should be ignored")
return nil
}, func(st *serverTester) {
getSlash(st)
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("unexpected END_STREAM")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
goth := decodeHeader(t, hf.HeaderBlockFragment())
wanth := [][2]string{
{":status", "200"},
{"content-type", "text/html; charset=utf-8"},
{"content-length", strconv.Itoa(len(msg))},
}
if !reflect.DeepEqual(goth, wanth) {
t.Errorf("Got headers %v; want %v", goth, wanth)
}
})
}
// Header accessed before the initial write and later mutated.
func TestServer_Response_Data_IgnoreHeaderAfterWrite_Overwrite(t *testing.T) {
const msg = "<html>this is HTML."
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
w.Header().Set("foo", "proper value")
io.WriteString(w, msg)
w.Header().Set("foo", "should be ignored")
return nil
}, func(st *serverTester) {
getSlash(st)
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("unexpected END_STREAM")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
goth := decodeHeader(t, hf.HeaderBlockFragment())
wanth := [][2]string{
{":status", "200"},
{"foo", "proper value"},
{"content-type", "text/html; charset=utf-8"},
{"content-length", strconv.Itoa(len(msg))},
}
if !reflect.DeepEqual(goth, wanth) {
t.Errorf("Got headers %v; want %v", goth, wanth)
}
})
}
func TestServer_Response_Data_SniffLenType(t *testing.T) {
const msg = "<html>this is HTML."
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
io.WriteString(w, msg)
return nil
}, func(st *serverTester) {
getSlash(st)
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("don't want END_STREAM, expecting data")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
goth := decodeHeader(t, hf.HeaderBlockFragment())
wanth := [][2]string{
{":status", "200"},
{"content-type", "text/html; charset=utf-8"},
{"content-length", strconv.Itoa(len(msg))},
}
if !reflect.DeepEqual(goth, wanth) {
t.Errorf("Got headers %v; want %v", goth, wanth)
}
df := st.wantData()
if !df.StreamEnded() {
t.Error("expected DATA to have END_STREAM flag")
}
if got := string(df.Data()); got != msg {
t.Errorf("got DATA %q; want %q", got, msg)
}
})
}
func TestServer_Response_Header_Flush_MidWrite(t *testing.T) {
const msg = "<html>this is HTML"
const msg2 = ", and this is the next chunk"
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
io.WriteString(w, msg)
w.(http.Flusher).Flush()
io.WriteString(w, msg2)
return nil
}, func(st *serverTester) {
getSlash(st)
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("unexpected END_STREAM flag")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
goth := decodeHeader(t, hf.HeaderBlockFragment())
wanth := [][2]string{
{":status", "200"},
{"content-type", "text/html; charset=utf-8"}, // sniffed
// and no content-length
}
if !reflect.DeepEqual(goth, wanth) {
t.Errorf("Got headers %v; want %v", goth, wanth)
}
{
df := st.wantData()
if df.StreamEnded() {
t.Error("unexpected END_STREAM flag")
}
if got := string(df.Data()); got != msg {
t.Errorf("got DATA %q; want %q", got, msg)
}
}
{
df := st.wantData()
if !df.StreamEnded() {
t.Error("wanted END_STREAM flag on last data chunk")
}
if got := string(df.Data()); got != msg2 {
t.Errorf("got DATA %q; want %q", got, msg2)
}
}
})
}
func TestServer_Response_LargeWrite(t *testing.T) {
const size = 1 << 20
const maxFrameSize = 16 << 10
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
n, err := w.Write(bytes.Repeat([]byte("a"), size))
if err != nil {
return fmt.Errorf("Write error: %v", err)
}
if n != size {
return fmt.Errorf("wrong size %d from Write", n)
}
return nil
}, func(st *serverTester) {
if err := st.fr.WriteSettings(
Setting{SettingInitialWindowSize, 0},
Setting{SettingMaxFrameSize, maxFrameSize},
); err != nil {
t.Fatal(err)
}
st.wantSettingsAck()
getSlash(st) // make the single request
// Give the handler quota to write:
if err := st.fr.WriteWindowUpdate(1, size); err != nil {
t.Fatal(err)
}
// Give the handler quota to write to connection-level
// window as well
if err := st.fr.WriteWindowUpdate(0, size); err != nil {
t.Fatal(err)
}
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("unexpected END_STREAM flag")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
goth := decodeHeader(t, hf.HeaderBlockFragment())
wanth := [][2]string{
{":status", "200"},
{"content-type", "text/plain; charset=utf-8"}, // sniffed
// and no content-length
}
if !reflect.DeepEqual(goth, wanth) {
t.Errorf("Got headers %v; want %v", goth, wanth)
}
var bytes, frames int
for {
df := st.wantData()
bytes += len(df.Data())
frames++
for _, b := range df.Data() {
if b != 'a' {
t.Fatal("non-'a' byte seen in DATA")
}
}
if df.StreamEnded() {
break
}
}
if bytes != size {
t.Errorf("Got %d bytes; want %d", bytes, size)
}
if want := int(size / maxFrameSize); frames < want || frames > want*2 {
t.Errorf("Got %d frames; want %d", frames, size)
}
})
}
// Test that the handler can't write more than the client allows
func TestServer_Response_LargeWrite_FlowControlled(t *testing.T) {
const size = 1 << 20
const maxFrameSize = 16 << 10
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
w.(http.Flusher).Flush()
n, err := w.Write(bytes.Repeat([]byte("a"), size))
if err != nil {
return fmt.Errorf("Write error: %v", err)
}
if n != size {
return fmt.Errorf("wrong size %d from Write", n)
}
return nil
}, func(st *serverTester) {
// Set the window size to something explicit for this test.
// It's also how much initial data we expect.
const initWindowSize = 123
if err := st.fr.WriteSettings(
Setting{SettingInitialWindowSize, initWindowSize},
Setting{SettingMaxFrameSize, maxFrameSize},
); err != nil {
t.Fatal(err)
}
st.wantSettingsAck()
getSlash(st) // make the single request
defer func() { st.fr.WriteRSTStream(1, ErrCodeCancel) }()
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("unexpected END_STREAM flag")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
df := st.wantData()
if got := len(df.Data()); got != initWindowSize {
t.Fatalf("Initial window size = %d but got DATA with %d bytes", initWindowSize, got)
}
for _, quota := range []int{1, 13, 127} {
if err := st.fr.WriteWindowUpdate(1, uint32(quota)); err != nil {
t.Fatal(err)
}
df := st.wantData()
if int(quota) != len(df.Data()) {
t.Fatalf("read %d bytes after giving %d quota", len(df.Data()), quota)
}
}
if err := st.fr.WriteRSTStream(1, ErrCodeCancel); err != nil {
t.Fatal(err)
}
})
}
// Test that the handler blocked in a Write is unblocked if the server sends a RST_STREAM.
func TestServer_Response_RST_Unblocks_LargeWrite(t *testing.T) {
const size = 1 << 20
const maxFrameSize = 16 << 10
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
w.(http.Flusher).Flush()
errc := make(chan error, 1)
go func() {
_, err := w.Write(bytes.Repeat([]byte("a"), size))
errc <- err
}()
select {
case err := <-errc:
if err == nil {
return errors.New("unexpected nil error from Write in handler")
}
return nil
case <-time.After(2 * time.Second):
return errors.New("timeout waiting for Write in handler")
}
}, func(st *serverTester) {
if err := st.fr.WriteSettings(
Setting{SettingInitialWindowSize, 0},
Setting{SettingMaxFrameSize, maxFrameSize},
); err != nil {
t.Fatal(err)
}
st.wantSettingsAck()
getSlash(st) // make the single request
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("unexpected END_STREAM flag")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
if err := st.fr.WriteRSTStream(1, ErrCodeCancel); err != nil {
t.Fatal(err)
}
})
}
func TestServer_Response_Empty_Data_Not_FlowControlled(t *testing.T) {
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
w.(http.Flusher).Flush()
// Nothing; send empty DATA
return nil
}, func(st *serverTester) {
// Handler gets no data quota:
if err := st.fr.WriteSettings(Setting{SettingInitialWindowSize, 0}); err != nil {
t.Fatal(err)
}
st.wantSettingsAck()
getSlash(st) // make the single request
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("unexpected END_STREAM flag")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
df := st.wantData()
if got := len(df.Data()); got != 0 {
t.Fatalf("unexpected %d DATA bytes; want 0", got)
}
if !df.StreamEnded() {
t.Fatal("DATA didn't have END_STREAM")
}
})
}
func TestServer_Response_Automatic100Continue(t *testing.T) {
const msg = "foo"
const reply = "bar"
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
if v := r.Header.Get("Expect"); v != "" {
t.Errorf("Expect header = %q; want empty", v)
}
buf := make([]byte, len(msg))
// This read should trigger the 100-continue being sent.
if n, err := io.ReadFull(r.Body, buf); err != nil || n != len(msg) || string(buf) != msg {
return fmt.Errorf("ReadFull = %q, %v; want %q, nil", buf[:n], err, msg)
}
_, err := io.WriteString(w, reply)
return err
}, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1, // clients send odd numbers
BlockFragment: st.encodeHeader(":method", "POST", "expect", "100-continue"),
EndStream: false,
EndHeaders: true,
})
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("unexpected END_STREAM flag")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
goth := decodeHeader(t, hf.HeaderBlockFragment())
wanth := [][2]string{
{":status", "100"},
}
if !reflect.DeepEqual(goth, wanth) {
t.Fatalf("Got headers %v; want %v", goth, wanth)
}
// Okay, they sent status 100, so we can send our
// gigantic and/or sensitive "foo" payload now.
st.writeData(1, true, []byte(msg))
st.wantWindowUpdate(0, uint32(len(msg)))
hf = st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("expected data to follow")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
goth = decodeHeader(t, hf.HeaderBlockFragment())
wanth = [][2]string{
{":status", "200"},
{"content-type", "text/plain; charset=utf-8"},
{"content-length", strconv.Itoa(len(reply))},
}
if !reflect.DeepEqual(goth, wanth) {
t.Errorf("Got headers %v; want %v", goth, wanth)
}
df := st.wantData()
if string(df.Data()) != reply {
t.Errorf("Client read %q; want %q", df.Data(), reply)
}
if !df.StreamEnded() {
t.Errorf("expect data stream end")
}
})
}
func TestServer_HandlerWriteErrorOnDisconnect(t *testing.T) {
errc := make(chan error, 1)
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
p := []byte("some data.\n")
for {
_, err := w.Write(p)
if err != nil {
errc <- err
return nil
}
}
}, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1,
BlockFragment: st.encodeHeader(),
EndStream: false,
EndHeaders: true,
})
hf := st.wantHeaders()
if hf.StreamEnded() {
t.Fatal("unexpected END_STREAM flag")
}
if !hf.HeadersEnded() {
t.Fatal("want END_HEADERS flag")
}
// Close the connection and wait for the handler to (hopefully) notice.
st.cc.Close()
select {
case <-errc:
case <-time.After(5 * time.Second):
t.Error("timeout")
}
})
}
func TestServer_Rejects_Too_Many_Streams(t *testing.T) {
const testPath = "/some/path"
inHandler := make(chan uint32)
leaveHandler := make(chan bool)
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
id := w.(*responseWriter).rws.stream.id
inHandler <- id
if id == 1+(defaultMaxStreams+1)*2 && r.URL.Path != testPath {
t.Errorf("decoded final path as %q; want %q", r.URL.Path, testPath)
}
<-leaveHandler
})
defer st.Close()
st.greet()
nextStreamID := uint32(1)
streamID := func() uint32 {
defer func() { nextStreamID += 2 }()
return nextStreamID
}
sendReq := func(id uint32, headers ...string) {
st.writeHeaders(HeadersFrameParam{
StreamID: id,
BlockFragment: st.encodeHeader(headers...),
EndStream: true,
EndHeaders: true,
})
}
for i := 0; i < defaultMaxStreams; i++ {
sendReq(streamID())
<-inHandler
}
defer func() {
for i := 0; i < defaultMaxStreams; i++ {
leaveHandler <- true
}
}()
// And this one should cross the limit:
// (It's also sent as a CONTINUATION, to verify we still track the decoder context,
// even if we're rejecting it)
rejectID := streamID()
headerBlock := st.encodeHeader(":path", testPath)
frag1, frag2 := headerBlock[:3], headerBlock[3:]
st.writeHeaders(HeadersFrameParam{
StreamID: rejectID,
BlockFragment: frag1,
EndStream: true,
EndHeaders: false, // CONTINUATION coming
})
if err := st.fr.WriteContinuation(rejectID, true, frag2); err != nil {
t.Fatal(err)
}
st.wantRSTStream(rejectID, ErrCodeProtocol)
// But let a handler finish:
leaveHandler <- true
st.wantHeaders()
// And now another stream should be able to start:
goodID := streamID()
sendReq(goodID, ":path", testPath)
select {
case got := <-inHandler:
if got != goodID {
t.Errorf("Got stream %d; want %d", got, goodID)
}
case <-time.After(3 * time.Second):
t.Error("timeout waiting for handler")
}
}
// So many response headers that the server needs to use CONTINUATION frames:
func TestServer_Response_ManyHeaders_With_Continuation(t *testing.T) {
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
h := w.Header()
for i := 0; i < 5000; i++ {
h.Set(fmt.Sprintf("x-header-%d", i), fmt.Sprintf("x-value-%d", i))
}
return nil
}, func(st *serverTester) {
getSlash(st)
hf := st.wantHeaders()
if hf.HeadersEnded() {
t.Fatal("got unwanted END_HEADERS flag")
}
n := 0
for {
n++
cf := st.wantContinuation()
if cf.HeadersEnded() {
break
}
}
if n < 5 {
t.Errorf("Only got %d CONTINUATION frames; expected 5+ (currently 6)", n)
}
})
}
// This previously crashed (reported by Mathieu Lonjaret as observed
// while using Camlistore) because we got a DATA frame from the client
// after the handler exited and our logic at the time was wrong,
// keeping a stream in the map in stateClosed, which tickled an
// invariant check later when we tried to remove that stream (via
// defer sc.closeAllStreamsOnConnClose) when the serverConn serve loop
// ended.
func TestServer_NoCrash_HandlerClose_Then_ClientClose(t *testing.T) {
testServerResponse(t, func(w http.ResponseWriter, r *http.Request) error {
// nothing
return nil
}, func(st *serverTester) {
st.writeHeaders(HeadersFrameParam{
StreamID: 1,
BlockFragment: st.encodeHeader(),
EndStream: false, // DATA is coming
EndHeaders: true,
})
hf := st.wantHeaders()
if !hf.HeadersEnded() || !hf.StreamEnded() {
t.Fatalf("want END_HEADERS+END_STREAM, got %v", hf)
}
// Sent when the a Handler closes while a client has
// indicated it's still sending DATA:
st.wantRSTStream(1, ErrCodeCancel)
// Now the handler has ended, so it's ended its
// stream, but the client hasn't closed its side
// (stateClosedLocal). So send more data and verify
// it doesn't crash with an internal invariant panic, like
// it did before.
st.writeData(1, true, []byte("foo"))
// Sent after a peer sends data anyway (admittedly the
// previous RST_STREAM might've still been in-flight),
// but they'll get the more friendly 'cancel' code
// first.
st.wantRSTStream(1, ErrCodeStreamClosed)
// Set up a bunch of machinery to record the panic we saw
// previously.
var (
panMu sync.Mutex
panicVal interface{}
)
testHookOnPanicMu.Lock()
testHookOnPanic = func(sc *serverConn, pv interface{}) bool {
panMu.Lock()
panicVal = pv
panMu.Unlock()
return true
}
testHookOnPanicMu.Unlock()
// Now force the serve loop to end, via closing the connection.
st.cc.Close()
select {
case <-st.sc.doneServing:
// Loop has exited.
panMu.Lock()
got := panicVal
panMu.Unlock()
if got != nil {
t.Errorf("Got panic: %v", got)
}
case <-time.After(5 * time.Second):
t.Error("timeout")
}
})
}
func TestServer_Rejects_TLS10(t *testing.T) { testRejectTLS(t, tls.VersionTLS10) }
func TestServer_Rejects_TLS11(t *testing.T) { testRejectTLS(t, tls.VersionTLS11) }
func testRejectTLS(t *testing.T, max uint16) {
st := newServerTester(t, nil, func(c *tls.Config) {
c.MaxVersion = max
})
defer st.Close()
gf := st.wantGoAway()
if got, want := gf.ErrCode, ErrCodeInadequateSecurity; got != want {
t.Errorf("Got error code %v; want %v", got, want)
}
}
func TestServer_Rejects_TLSBadCipher(t *testing.T) {
st := newServerTester(t, nil, func(c *tls.Config) {
// Only list bad ones:
c.CipherSuites = []uint16{
tls.TLS_RSA_WITH_RC4_128_SHA,
tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA,
tls.TLS_RSA_WITH_AES_128_CBC_SHA,
tls.TLS_RSA_WITH_AES_256_CBC_SHA,
tls.TLS_ECDHE_ECDSA_WITH_RC4_128_SHA,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
tls.TLS_ECDHE_RSA_WITH_RC4_128_SHA,
tls.TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
}
})
defer st.Close()
gf := st.wantGoAway()
if got, want := gf.ErrCode, ErrCodeInadequateSecurity; got != want {
t.Errorf("Got error code %v; want %v", got, want)
}
}
func TestServer_Advertises_Common_Cipher(t *testing.T) {
const requiredSuite = tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
st := newServerTester(t, nil, func(c *tls.Config) {
// Have the client only support the one required by the spec.
c.CipherSuites = []uint16{requiredSuite}
}, func(ts *httptest.Server) {
var srv *http.Server = ts.Config
// Have the server configured with one specific cipher suite
// which is banned. This tests that ConfigureServer ends up
// adding the good one to this list.
srv.TLSConfig = &tls.Config{
CipherSuites: []uint16{tls.TLS_RSA_WITH_AES_128_CBC_SHA}, // just a banned one
}
})
defer st.Close()
st.greet()
}
// TODO: move this onto *serverTester, and re-use the same hpack
// decoding context throughout. We're just getting lucky here with
// creating a new decoder each time.
func decodeHeader(t *testing.T, headerBlock []byte) (pairs [][2]string) {
d := hpack.NewDecoder(initialHeaderTableSize, func(f hpack.HeaderField) {
pairs = append(pairs, [2]string{f.Name, f.Value})
})
if _, err := d.Write(headerBlock); err != nil {
t.Fatalf("hpack decoding error: %v", err)
}
if err := d.Close(); err != nil {
t.Fatalf("hpack decoding error: %v", err)
}
return
}
// testServerResponse sets up an idle HTTP/2 connection and lets you
// write a single request with writeReq, and then reply to it in some way with the provided handler,
// and then verify the output with the serverTester again (assuming the handler returns nil)
func testServerResponse(t testing.TB,
handler func(http.ResponseWriter, *http.Request) error,
client func(*serverTester),
) {
errc := make(chan error, 1)
st := newServerTester(t, func(w http.ResponseWriter, r *http.Request) {
if r.Body == nil {
t.Fatal("nil Body")
}
errc <- handler(w, r)
})
defer st.Close()
donec := make(chan bool)
go func() {
defer close(donec)
st.greet()
client(st)
}()
select {
case <-donec:
return
case <-time.After(5 * time.Second):
t.Fatal("timeout")
}
select {
case err := <-errc:
if err != nil {
t.Fatalf("Error in handler: %v", err)
}
case <-time.After(2 * time.Second):
t.Error("timeout waiting for handler to finish")
}
}
// readBodyHandler returns an http Handler func that reads len(want)
// bytes from r.Body and fails t if the contents read were not
// the value of want.
func readBodyHandler(t *testing.T, want string) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
buf := make([]byte, len(want))
_, err := io.ReadFull(r.Body, buf)
if err != nil {
t.Error(err)
return
}
if string(buf) != want {
t.Errorf("read %q; want %q", buf, want)
}
}
}
// TestServerWithCurl currently fails, hence the LenientCipherSuites test. See:
// https://github.com/tatsuhiro-t/nghttp2/issues/140 &
// http://sourceforge.net/p/curl/bugs/1472/
func TestServerWithCurl(t *testing.T) { testServerWithCurl(t, false) }
func TestServerWithCurl_LenientCipherSuites(t *testing.T) { testServerWithCurl(t, true) }
func testServerWithCurl(t *testing.T, permitProhibitedCipherSuites bool) {
if runtime.GOOS != "linux" {
t.Skip("skipping Docker test when not on Linux; requires --net which won't work with boot2docker anyway")
}
requireCurl(t)
const msg = "Hello from curl!\n"
ts := httptest.NewUnstartedServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Foo", "Bar")
w.Header().Set("Client-Proto", r.Proto)
io.WriteString(w, msg)
}))
ConfigureServer(ts.Config, &Server{
PermitProhibitedCipherSuites: permitProhibitedCipherSuites,
})
ts.TLS = ts.Config.TLSConfig // the httptest.Server has its own copy of this TLS config
ts.StartTLS()
defer ts.Close()
var gotConn int32
testHookOnConn = func() { atomic.StoreInt32(&gotConn, 1) }
t.Logf("Running test server for curl to hit at: %s", ts.URL)
container := curl(t, "--silent", "--http2", "--insecure", "-v", ts.URL)
defer kill(container)
resc := make(chan interface{}, 1)
go func() {
res, err := dockerLogs(container)
if err != nil {
resc <- err
} else {
resc <- res
}
}()
select {
case res := <-resc:
if err, ok := res.(error); ok {
t.Fatal(err)
}
if !strings.Contains(string(res.([]byte)), "foo: Bar") {
t.Errorf("didn't see foo: Bar header")
t.Logf("Got: %s", res)
}
if !strings.Contains(string(res.([]byte)), "client-proto: HTTP/2") {
t.Errorf("didn't see client-proto: HTTP/2 header")
t.Logf("Got: %s", res)
}
if !strings.Contains(string(res.([]byte)), msg) {
t.Errorf("didn't see %q content", msg)
t.Logf("Got: %s", res)
}
case <-time.After(3 * time.Second):
t.Errorf("timeout waiting for curl")
}
if atomic.LoadInt32(&gotConn) == 0 {
t.Error("never saw an http2 connection")
}
}
func BenchmarkServerGets(b *testing.B) {
b.ReportAllocs()
const msg = "Hello, world"
st := newServerTester(b, func(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, msg)
})
defer st.Close()
st.greet()
// Give the server quota to reply. (plus it has the the 64KB)
if err := st.fr.WriteWindowUpdate(0, uint32(b.N*len(msg))); err != nil {
b.Fatal(err)
}
for i := 0; i < b.N; i++ {
id := 1 + uint32(i)*2
st.writeHeaders(HeadersFrameParam{
StreamID: id,
BlockFragment: st.encodeHeader(),
EndStream: true,
EndHeaders: true,
})
st.wantHeaders()
df := st.wantData()
if !df.StreamEnded() {
b.Fatalf("DATA didn't have END_STREAM; got %v", df)
}
}
}
func BenchmarkServerPosts(b *testing.B) {
b.ReportAllocs()
const msg = "Hello, world"
st := newServerTester(b, func(w http.ResponseWriter, r *http.Request) {
io.WriteString(w, msg)
})
defer st.Close()
st.greet()
// Give the server quota to reply. (plus it has the the 64KB)
if err := st.fr.WriteWindowUpdate(0, uint32(b.N*len(msg))); err != nil {
b.Fatal(err)
}
for i := 0; i < b.N; i++ {
id := 1 + uint32(i)*2
st.writeHeaders(HeadersFrameParam{
StreamID: id,
BlockFragment: st.encodeHeader(":method", "POST"),
EndStream: false,
EndHeaders: true,
})
st.writeData(id, true, nil)
st.wantHeaders()
df := st.wantData()
if !df.StreamEnded() {
b.Fatalf("DATA didn't have END_STREAM; got %v", df)
}
}
}
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