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package smux
import (
crand "crypto/rand"
"encoding/binary"
"fmt"
"io"
"log"
"math/rand"
"net"
"net/http"
_ "net/http/pprof"
"strings"
"sync"
"testing"
"time"
)
func init() {
go func() {
log.Println(http.ListenAndServe("localhost:6060", nil))
}()
log.SetFlags(log.LstdFlags | log.Lshortfile)
ln, err := net.Listen("tcp", "127.0.0.1:19999")
if err != nil {
// handle error
panic(err)
}
go func() {
for {
conn, err := ln.Accept()
if err != nil {
// handle error
}
go handleConnection(conn)
}
}()
}
func handleConnection(conn net.Conn) {
session, _ := Server(conn, nil)
for {
if stream, err := session.AcceptStream(); err == nil {
go func(s io.ReadWriteCloser) {
buf := make([]byte, 65536)
for {
n, err := s.Read(buf)
if err != nil {
return
}
s.Write(buf[:n])
}
}(stream)
} else {
return
}
}
}
func TestEcho(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
stream, _ := session.OpenStream()
const N = 100
buf := make([]byte, 10)
var sent string
var received string
for i := 0; i < N; i++ {
msg := fmt.Sprintf("hello%v", i)
stream.Write([]byte(msg))
sent += msg
if n, err := stream.Read(buf); err != nil {
t.Fatal(err)
} else {
received += string(buf[:n])
}
}
if sent != received {
t.Fatal("data mimatch")
}
session.Close()
}
func TestSpeed(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
stream, _ := session.OpenStream()
start := time.Now()
var wg sync.WaitGroup
wg.Add(1)
go func() {
buf := make([]byte, 1024*1024)
nrecv := 0
for {
n, err := stream.Read(buf)
if err != nil {
t.Fatal(err)
break
} else {
nrecv += n
if nrecv == 4096*4096 {
break
}
}
}
stream.Close()
t.Log("time for 16MB rtt", time.Since(start))
wg.Done()
}()
msg := make([]byte, 8192)
for i := 0; i < 2048; i++ {
stream.Write(msg)
}
wg.Wait()
session.Close()
}
func TestParallel(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
par := 1000
messages := 100
var wg sync.WaitGroup
wg.Add(par)
for i := 0; i < par; i++ {
stream, _ := session.OpenStream()
go func(s *Stream) {
buf := make([]byte, 20)
for j := 0; j < messages; j++ {
msg := fmt.Sprintf("hello%v", j)
s.Write([]byte(msg))
if _, err := s.Read(buf); err != nil {
break
}
}
s.Close()
wg.Done()
}(stream)
}
t.Log("created", session.NumStreams(), "streams")
wg.Wait()
session.Close()
}
func TestCloseThenOpen(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
session.Close()
if _, err := session.OpenStream(); err == nil {
t.Fatal("opened after close")
}
}
func TestStreamDoubleClose(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
stream, _ := session.OpenStream()
stream.Close()
if err := stream.Close(); err == nil {
t.Log("double close doesn't return error")
}
session.Close()
}
func TestTinyReadBuffer(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
stream, _ := session.OpenStream()
const N = 100
tinybuf := make([]byte, 6)
var sent string
var received string
for i := 0; i < N; i++ {
msg := fmt.Sprintf("hello%v", i)
sent += msg
nsent, err := stream.Write([]byte(msg))
if err != nil {
t.Fatal("cannot write")
}
nrecv := 0
for nrecv < nsent {
if n, err := stream.Read(tinybuf); err == nil {
nrecv += n
received += string(tinybuf[:n])
} else {
t.Fatal("cannot read with tiny buffer")
}
}
}
if sent != received {
t.Fatal("data mimatch")
}
session.Close()
}
func TestIsClose(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
session.Close()
if session.IsClosed() != true {
t.Fatal("still open after close")
}
}
func TestKeepAliveTimeout(t *testing.T) {
ln, err := net.Listen("tcp", "127.0.0.1:29999")
if err != nil {
// handle error
panic(err)
}
go func() {
ln.Accept()
}()
cli, err := net.Dial("tcp", "127.0.0.1:29999")
if err != nil {
t.Fatal(err)
}
config := DefaultConfig()
config.KeepAliveInterval = time.Second
config.KeepAliveTimeout = 2 * time.Second
session, _ := Client(cli, config)
<-time.After(3 * time.Second)
if session.IsClosed() != true {
t.Fatal("keepalive-timeout failed")
}
}
func TestServerEcho(t *testing.T) {
ln, err := net.Listen("tcp", "127.0.0.1:39999")
if err != nil {
// handle error
panic(err)
}
go func() {
if conn, err := ln.Accept(); err == nil {
session, _ := Server(conn, nil)
if stream, err := session.OpenStream(); err == nil {
const N = 100
buf := make([]byte, 10)
for i := 0; i < N; i++ {
msg := fmt.Sprintf("hello%v", i)
stream.Write([]byte(msg))
if n, err := stream.Read(buf); err != nil {
t.Fatal(err)
} else if string(buf[:n]) != msg {
t.Fatal(err)
}
}
stream.Close()
} else {
t.Fatal(err)
}
} else {
t.Fatal(err)
}
}()
cli, err := net.Dial("tcp", "127.0.0.1:39999")
if err != nil {
t.Fatal(err)
}
if session, err := Client(cli, nil); err == nil {
if stream, err := session.AcceptStream(); err == nil {
buf := make([]byte, 65536)
for {
n, err := stream.Read(buf)
if err != nil {
break
}
stream.Write(buf[:n])
}
} else {
t.Fatal(err)
}
} else {
t.Fatal(err)
}
}
func TestSendWithoutRecv(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
stream, _ := session.OpenStream()
const N = 100
for i := 0; i < N; i++ {
msg := fmt.Sprintf("hello%v", i)
stream.Write([]byte(msg))
}
buf := make([]byte, 1)
if _, err := stream.Read(buf); err != nil {
t.Fatal(err)
}
stream.Close()
}
func TestWriteAfterClose(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
stream, _ := session.OpenStream()
stream.Close()
if _, err := stream.Write([]byte("write after close")); err == nil {
t.Fatal("write after close failed")
}
}
func TestReadStreamAfterSessionClose(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
stream, _ := session.OpenStream()
session.Close()
buf := make([]byte, 10)
if _, err := stream.Read(buf); err != nil {
t.Log(err)
} else {
t.Fatal("read stream after session close succeeded")
}
}
func TestWriteStreamAfterConnectionClose(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
stream, _ := session.OpenStream()
session.conn.Close()
if _, err := stream.Write([]byte("write after connection close")); err == nil {
t.Fatal("write after connection close failed")
}
}
func TestNumStreamAfterClose(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
if _, err := session.OpenStream(); err == nil {
if session.NumStreams() != 1 {
t.Fatal("wrong number of streams after opened")
}
session.Close()
if session.NumStreams() != 0 {
t.Fatal("wrong number of streams after session closed")
}
} else {
t.Fatal(err)
}
cli.Close()
}
func TestRandomFrame(t *testing.T) {
// pure random
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
for i := 0; i < 100; i++ {
rnd := make([]byte, rand.Uint32()%1024)
io.ReadFull(crand.Reader, rnd)
session.conn.Write(rnd)
}
cli.Close()
// double syn
cli, err = net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ = Client(cli, nil)
for i := 0; i < 100; i++ {
f := newFrame(cmdSYN, 1000)
session.writeFrame(f)
}
cli.Close()
// random cmds
cli, err = net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
allcmds := []byte{cmdSYN, cmdRST, cmdPSH, cmdNOP}
session, _ = Client(cli, nil)
for i := 0; i < 100; i++ {
f := newFrame(allcmds[rand.Int()%len(allcmds)], rand.Uint32())
session.writeFrame(f)
}
cli.Close()
// random cmds & sids
cli, err = net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ = Client(cli, nil)
for i := 0; i < 100; i++ {
f := newFrame(byte(rand.Uint32()), rand.Uint32())
session.writeFrame(f)
}
cli.Close()
// random version
cli, err = net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ = Client(cli, nil)
for i := 0; i < 100; i++ {
f := newFrame(byte(rand.Uint32()), rand.Uint32())
f.ver = byte(rand.Uint32())
session.writeFrame(f)
}
cli.Close()
// incorrect size
cli, err = net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ = Client(cli, nil)
f := newFrame(byte(rand.Uint32()), rand.Uint32())
rnd := make([]byte, rand.Uint32()%1024)
io.ReadFull(crand.Reader, rnd)
f.data = rnd
buf := make([]byte, headerSize+len(f.data))
buf[0] = f.ver
buf[1] = f.cmd
binary.LittleEndian.PutUint16(buf[2:], uint16(len(rnd)+1)) /// incorrect size
binary.LittleEndian.PutUint32(buf[4:], f.sid)
copy(buf[headerSize:], f.data)
session.conn.Write(buf)
t.Log(rawHeader(buf))
cli.Close()
}
func TestReadDeadline(t *testing.T) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
t.Fatal(err)
}
session, _ := Client(cli, nil)
stream, _ := session.OpenStream()
const N = 100
buf := make([]byte, 10)
var readErr error
for i := 0; i < N; i++ {
msg := fmt.Sprintf("hello%v", i)
stream.Write([]byte(msg))
stream.SetReadDeadline(time.Now().Add(-1 * time.Minute))
if _, readErr = stream.Read(buf); readErr != nil {
break
}
}
if readErr != nil {
if !strings.Contains(readErr.Error(), "i/o timeout") {
t.Fatalf("Wrong error: %v", readErr)
}
} else {
t.Fatal("No error when reading with past deadline")
}
session.Close()
}
func BenchmarkAcceptClose(b *testing.B) {
cli, err := net.Dial("tcp", "127.0.0.1:19999")
if err != nil {
b.Fatal(err)
}
session, _ := Client(cli, nil)
for i := 0; i < b.N; i++ {
if stream, err := session.OpenStream(); err == nil {
stream.Close()
} else {
b.Fatal(err)
}
}
}
func BenchmarkConnSmux(b *testing.B) {
cs, ss, err := getSmuxStreamPair()
if err != nil {
b.Fatal(err)
}
defer cs.Close()
defer ss.Close()
bench(b, cs, ss)
}
func BenchmarkConnTCP(b *testing.B) {
cs, ss, err := getTCPConnectionPair()
if err != nil {
b.Fatal(err)
}
defer cs.Close()
defer ss.Close()
bench(b, cs, ss)
}
func getSmuxStreamPair() (*Stream, *Stream, error) {
c1, c2, err := getTCPConnectionPair()
if err != nil {
return nil, nil, err
}
s, err := Server(c2, nil)
if err != nil {
return nil, nil, err
}
c, err := Client(c1, nil)
if err != nil {
return nil, nil, err
}
var ss *Stream
done := make(chan error)
go func() {
var rerr error
ss, rerr = s.AcceptStream()
done <- rerr
close(done)
}()
cs, err := c.OpenStream()
if err != nil {
return nil, nil, err
}
err = <-done
if err != nil {
return nil, nil, err
}
return cs, ss, nil
}
func getTCPConnectionPair() (net.Conn, net.Conn, error) {
lst, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
return nil, nil, err
}
var conn0 net.Conn
var err0 error
done := make(chan struct{})
go func() {
conn0, err0 = lst.Accept()
close(done)
}()
conn1, err := net.Dial("tcp", lst.Addr().String())
if err != nil {
return nil, nil, err
}
<-done
if err0 != nil {
return nil, nil, err0
}
return conn0, conn1, nil
}
func bench(b *testing.B, rd io.Reader, wr io.Writer) {
buf := make([]byte, 128*1024)
buf2 := make([]byte, 128*1024)
b.SetBytes(128 * 1024)
b.ResetTimer()
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
count := 0
for {
n, _ := rd.Read(buf2)
count += n
if count == 128*1024*b.N {
return
}
}
}()
for i := 0; i < b.N; i++ {
wr.Write(buf)
}
wg.Wait()
}