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server_test.go
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// Copyright (c) 2013, Daniel Morsing
// For more information, see the LICENSE file
// high level tests.
package spdy
import (
"bytes"
"crypto/tls"
"fmt"
"github.com/DanielMorsing/spdy/framing"
"io/ioutil"
"net"
"net/http"
"testing"
"time"
)
func init() {
var response = `
<html>
<head></head>
<body>
<form action="hej" method="post">
First name: <input type="text" name="firstname"><br>
Last name: <input type="text" name="lastname">
<input type="submit" value="Submit"/>
</form>
</body>
</html>
`
ds := http.DefaultServeMux
ds.HandleFunc("/", func(rw http.ResponseWriter, rq *http.Request) {
rw.WriteHeader(200)
<-corkch
rw.Write([]byte(response))
})
ds.HandleFunc("/hej", func(rw http.ResponseWriter, rq *http.Request) {
rq.ParseForm()
rw.WriteHeader(200)
fmt.Fprintf(rw, "your name is %s %s\n", rq.Form["firstname"][0], rq.Form["lastname"][0])
})
testsrv = &Server{
Server: http.Server{
Addr: "localhost:4444",
Handler: ds,
},
}
}
var testsrv *Server
var corkch = func() chan struct{} {
c := make(chan struct{})
close(c)
return c
}()
func cork() {
corkch = make(chan struct{})
}
func uncork() {
corkch <- struct{}{}
close(corkch)
}
var clientConfig = tls.Config{
InsecureSkipVerify: true,
NextProtos: []string{"spdy/3"},
}
func newClientSession() (*framing.Framer, net.Conn) {
srv, clnt := net.Pipe()
sess, err := newSession(&testsrv.Server, srv, testsrv.Server.Handler)
if err != nil {
panic(err)
}
go func() {
sess.serve()
srv.Close()
}()
framer, err := framing.NewFramer(clnt, clnt)
if err != nil {
panic(err)
}
return framer, clnt
}
func goldenHeader() http.Header {
m := make(http.Header)
m[":host"] = []string{"localhost:4444"}
m[":path"] = []string{"/"}
m[":scheme"] = []string{"https"}
m[":version"] = []string{"HTTP/1.1"}
m["User-Agent"] = []string{"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.95 Safari/537.36"}
m["Accept"] = []string{"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"}
m[":method"] = []string{"GET"}
m["Accept-Encoding"] = []string{"gzip,deflate,sdch"}
m["Accept-Language"] = []string{"en-US,en;q=0.8,da;q=0.6"}
return m
}
func makeRequest() *framing.SynStreamFrame {
return &framing.SynStreamFrame{
framing.ControlFrameHeader{
Flags: framing.ControlFlagFin,
},
1,
0,
0,
0,
goldenHeader(),
}
}
func goldenSettings() *framing.SettingsFrame {
return &framing.SettingsFrame{
FlagIdValues: []framing.SettingsFlagIdValue{
framing.SettingsFlagIdValue{0, 4, 1000},
framing.SettingsFlagIdValue{0, 7, 10485760},
},
}
}
func frameRead(t *testing.T, f *framing.Framer) framing.Frame {
for {
frame, err := f.ReadFrame()
if err != nil {
t.Fatal(err)
}
if _, ok := frame.(*framing.WindowUpdateFrame); !ok {
return frame
}
}
}
func frameWrite(t *testing.T, f *framing.Framer, frame framing.Frame) {
err := f.WriteFrame(frame)
if err != nil {
t.Fatal(err)
}
}
func TestPing(t *testing.T) {
f, n := newClientSession()
defer n.Close()
p := framing.PingFrame{Id: 1}
frameWrite(t, f, &p)
retf := frameRead(t, f)
if retp, ok := retf.(*framing.PingFrame); ok {
if retp.Id != 1 {
t.Error("ping id returned is not the one sent")
}
} else {
t.Error("Received non ping frame")
}
}
func TestSettings(t *testing.T) {
f, n := newClientSession()
defer n.Close()
set := goldenSettings()
frameWrite(t, f, set)
}
func TestBasicRequest(t *testing.T) {
f, n := newClientSession()
defer n.Close()
set := goldenSettings()
frameWrite(t, f, set)
syn := makeRequest()
frameWrite(t, f, syn)
r := frameRead(t, f)
rp, ok := r.(*framing.SynReplyFrame)
if !ok {
t.Fatal("did not get reply frame")
}
if rp.StreamId != 1 {
t.Fatal("Wrong StreamId")
}
for {
frame := frameRead(t, f)
d, ok := frame.(*framing.InDataFrame)
if !ok {
t.Fatalf("non data frame received: %T", frame)
}
d.Close()
// got fin
if d.Flags != 0 {
break
}
}
}
func TestReset(t *testing.T) {
f, n := newClientSession()
defer n.Close()
set := goldenSettings()
frameWrite(t, f, set)
syn := makeRequest()
cork()
frameWrite(t, f, syn)
r := frameRead(t, f)
_, ok := r.(*framing.SynReplyFrame)
if !ok {
t.Fatal("did not get reply frame")
}
rst := framing.RstStreamFrame{
StreamId: 1,
Status: framing.Cancel,
}
frameWrite(t, f, &rst)
// there is a acknowledged race condition here.
// where the server may send inflight dataframes
// after a rst has been sent.
//
// make sure that reset has been received by sending a ping
p := framing.PingFrame{Id: 1}
frameWrite(t, f, &p)
retf := frameRead(t, f)
if _, ok := retf.(*framing.PingFrame); !ok {
t.Error("Received non ping frame")
}
var ch = make(chan framing.Frame, 1)
go func() {
for {
f, err := f.ReadFrame()
if err != nil {
return
}
ch <- f
}
}()
uncork()
timech := time.After(500 * time.Millisecond)
select {
case <-ch:
t.Fatal("got frame after reset")
case <-timech:
return
}
}
func TestWindowLimit(t *testing.T) {
f, n := newClientSession()
defer n.Close()
set := goldenSettings()
for i := range set.FlagIdValues {
if set.FlagIdValues[i].Id == framing.SettingsInitialWindowSize {
set.FlagIdValues[i].Value = 1
}
}
frameWrite(t, f, set)
syn := makeRequest()
frameWrite(t, f, syn)
frame := frameRead(t, f)
_, ok := frame.(*framing.SynReplyFrame)
if !ok {
t.Fatal("did not get reply frame")
}
frame = frameRead(t, f)
d, ok := frame.(*framing.InDataFrame)
if !ok {
t.Fatal("did not get data frame")
}
d.Close()
if d.Length != 1 {
t.Fatal("Data frame larger than window")
}
var ch = make(chan framing.Frame, 1)
go func() {
f := frameRead(t, f)
ch <- f
}()
select {
case <-ch:
t.Error("got data even though it's supposed to be blocked on window")
case <-time.After(200 * time.Millisecond):
wnd := framing.WindowUpdateFrame{
StreamId: 1,
DeltaWindowSize: 1 << 20,
}
frameWrite(t, f, &wnd)
}
select {
case <-ch:
case <-time.After(500 * time.Millisecond):
t.Error("didn't get data after window unblocked")
}
}
func TestResetWhileWindowblocked(t *testing.T) {
f, n := newClientSession()
defer n.Close()
set := goldenSettings()
for i := range set.FlagIdValues {
if set.FlagIdValues[i].Id == framing.SettingsInitialWindowSize {
set.FlagIdValues[i].Value = 1
}
}
frameWrite(t, f, set)
syn := makeRequest()
frameWrite(t, f, syn)
frame := frameRead(t, f)
_, ok := frame.(*framing.SynReplyFrame)
if !ok {
t.Fatal("did not get reply frame")
}
frame = frameRead(t, f)
d, ok := frame.(*framing.InDataFrame)
if !ok {
t.Fatal("did not get data frame")
}
d.Close()
if d.Length != 1 {
t.Fatal("Data frame larger than window")
}
var ch = make(chan framing.Frame, 1)
go func() {
f, _ := f.ReadFrame()
ch <- f
}()
select {
case <-ch:
t.Error("got data even though it's supposed to be blocked on window")
case <-time.After(200 * time.Millisecond):
rst := framing.RstStreamFrame{
StreamId: 1,
Status: framing.Cancel,
}
frameWrite(t, f, &rst)
}
}
func TestPostRequest(t *testing.T) {
f, n := newClientSession()
defer n.Close()
set := goldenSettings()
frameWrite(t, f, set)
syn := makeRequest()
syn.Headers[":path"] = []string{"/hej"}
syn.Headers[":method"] = []string{"POST"}
syn.Headers["Content-Type"] = []string{"application/x-www-form-urlencoded"}
syn.CFHeader.Flags = 0
frameWrite(t, f, syn)
d := &framing.DataFrame{}
d.StreamId = 1
d.Flags = framing.DataFlagFin
d.Data = []byte("firstname=daniel&lastname=morsing")
frameWrite(t, f, d)
r := frameRead(t, f)
rp, ok := r.(*framing.SynReplyFrame)
if !ok {
t.Fatalf("did not get reply frame: %T", r)
}
if rp.StreamId != 1 {
t.Fatal("Wrong StreamId")
}
frame := frameRead(t, f)
id, ok := frame.(*framing.InDataFrame)
if !ok {
t.Fatal("non data frame received:", frame)
}
got, err := ioutil.ReadAll(id)
id.Close()
if err != nil {
t.Error(err)
}
exp := []byte("your name is daniel morsing\n")
if !bytes.Equal(got, exp) {
t.Errorf("expected %s; got %s", exp, d.Data)
}
}
func TestInvalidStreamId(t *testing.T) {
f, n := newClientSession()
defer n.Close()
syn := makeRequest()
syn.StreamId = 2
frameWrite(t, f, syn)
goaway := frameRead(t, f)
g, ok := goaway.(*framing.GoAwayFrame)
if !ok {
// didn't get reset
t.Errorf("did not get goaway frame. got %T instead", g)
return
}
if g.Status != framing.GoAwayProtocolError {
t.Error("Wrong error code")
}
_, err := f.ReadFrame()
if err == nil {
t.Error("Session not closed")
}
}