Cloak/internal/multiplex/stream_test.go

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package multiplex
import (
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"bytes"
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"github.com/cbeuw/Cloak/internal/common"
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"io"
"io/ioutil"
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"math/rand"
"testing"
"time"
"github.com/cbeuw/connutil"
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)
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const payloadLen = 1000
var emptyKey [32]byte
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func setupSesh(unordered bool, key [32]byte, encryptionMethod byte) *Session {
obfuscator, _ := MakeObfuscator(encryptionMethod, key)
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seshConfig := SessionConfig{
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Obfuscator: obfuscator,
Valve: nil,
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Unordered: unordered,
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}
return MakeSession(0, seshConfig)
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}
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func BenchmarkStream_Write_Ordered(b *testing.B) {
hole := connutil.Discard()
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var sessionKey [32]byte
rand.Read(sessionKey[:])
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const testDataLen = 65536
testData := make([]byte, testDataLen)
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rand.Read(testData)
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eMethods := map[string]byte{
"plain": E_METHOD_PLAIN,
"chacha20-poly1305": E_METHOD_CHACHA20_POLY1305,
"aes-gcm": E_METHOD_AES_GCM,
}
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for name, method := range eMethods {
b.Run(name, func(b *testing.B) {
sesh := setupSesh(false, sessionKey, method)
sesh.AddConnection(hole)
stream, _ := sesh.OpenStream()
b.SetBytes(testDataLen)
b.ResetTimer()
for i := 0; i < b.N; i++ {
stream.Write(testData)
}
})
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}
}
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/*
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func BenchmarkStream_Read_Ordered(b *testing.B) {
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var sessionKey [32]byte
rand.Read(sessionKey[:])
sesh := setupSesh(false, sessionKey)
testPayload := make([]byte, payloadLen)
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rand.Read(testPayload)
f := &Frame{
1,
0,
0,
testPayload,
}
obfsBuf := make([]byte, 17000)
l, _ := net.Listen("tcp", "127.0.0.1:0")
go func() {
// potentially bottlenecked here rather than the actual stream read throughput
conn, _ := net.Dial("tcp", l.Addr().String())
for {
i, _ := sesh.Obfs(f, obfsBuf)
f.Seq += 1
_, err := conn.Write(obfsBuf[:i])
if err != nil {
b.Error("cannot write to connection", err)
}
}
}()
conn, _ := l.Accept()
sesh.AddConnection(conn)
stream, err := sesh.Accept()
if err != nil {
b.Error("failed to accept stream", err)
}
//time.Sleep(5*time.Second) // wait for buffer to fill up
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readBuf := make([]byte, payloadLen)
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b.SetBytes(payloadLen)
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b.ResetTimer()
for j := 0; j < b.N; j++ {
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stream.Read(readBuf)
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}
}
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*/
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func TestStream_Write(t *testing.T) {
hole := connutil.Discard()
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var sessionKey [32]byte
rand.Read(sessionKey[:])
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sesh := setupSesh(false, sessionKey, E_METHOD_PLAIN)
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sesh.AddConnection(hole)
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testData := make([]byte, payloadLen)
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rand.Read(testData)
stream, _ := sesh.OpenStream()
_, err := stream.Write(testData)
if err != nil {
t.Error(
"For", "stream write",
"got", err,
)
}
}
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func TestStream_WriteSync(t *testing.T) {
// Close calls made after write MUST have a higher seq
var sessionKey [32]byte
rand.Read(sessionKey[:])
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clientSesh := setupSesh(false, sessionKey, E_METHOD_PLAIN)
serverSesh := setupSesh(false, sessionKey, E_METHOD_PLAIN)
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w, r := connutil.AsyncPipe()
clientSesh.AddConnection(&common.TLSConn{Conn: w})
serverSesh.AddConnection(&common.TLSConn{Conn: r})
testData := make([]byte, payloadLen)
rand.Read(testData)
t.Run("test single", func(t *testing.T) {
go func() {
stream, _ := clientSesh.OpenStream()
stream.Write(testData)
stream.Close()
}()
recvBuf := make([]byte, payloadLen)
serverStream, _ := serverSesh.Accept()
_, err := io.ReadFull(serverStream, recvBuf)
if err != nil {
t.Error(err)
}
})
t.Run("test multiple", func(t *testing.T) {
const numStreams = 100
for i := 0; i < numStreams; i++ {
go func() {
stream, _ := clientSesh.OpenStream()
stream.Write(testData)
stream.Close()
}()
}
for i := 0; i < numStreams; i++ {
recvBuf := make([]byte, payloadLen)
serverStream, _ := serverSesh.Accept()
_, err := io.ReadFull(serverStream, recvBuf)
if err != nil {
t.Error(err)
}
}
})
}
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func TestStream_Close(t *testing.T) {
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var sessionKey [32]byte
rand.Read(sessionKey[:])
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sesh := setupSesh(false, sessionKey, E_METHOD_PLAIN)
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testPayload := []byte{42, 42, 42}
f := &Frame{
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1,
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0,
0,
testPayload,
}
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conn, writingEnd := connutil.AsyncPipe()
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sesh.AddConnection(conn)
obfsBuf := make([]byte, 512)
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i, _ := sesh.Obfs(f, obfsBuf, 0)
writingEnd.Write(obfsBuf[:i])
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time.Sleep(100 * time.Microsecond)
stream, err := sesh.Accept()
if err != nil {
t.Error("failed to accept stream", err)
return
}
err = stream.Close()
if err != nil {
t.Error("failed to actively close stream", err)
return
}
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if sI, _ := sesh.streams.Load(stream.(*Stream).id); sI != nil {
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t.Error("stream still exists")
return
}
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readBuf := make([]byte, len(testPayload))
_, err = io.ReadFull(stream, readBuf)
if err != nil {
t.Errorf("can't read residual data %v", err)
}
if !bytes.Equal(readBuf, testPayload) {
t.Errorf("read wrong data")
}
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}
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func TestStream_Read(t *testing.T) {
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seshes := map[string]bool{
"ordered": false,
"unordered": true,
}
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testPayload := []byte{42, 42, 42}
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const smallPayloadLen = 3
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f := &Frame{
1,
0,
0,
testPayload,
}
var streamID uint32
buf := make([]byte, 10)
obfsBuf := make([]byte, 512)
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for name, unordered := range seshes {
sesh := setupSesh(unordered, emptyKey, E_METHOD_PLAIN)
conn, writingEnd := connutil.AsyncPipe()
sesh.AddConnection(conn)
t.Run(name, func(t *testing.T) {
t.Run("Plain read", func(t *testing.T) {
f.StreamID = streamID
i, _ := sesh.Obfs(f, obfsBuf, 0)
streamID++
writingEnd.Write(obfsBuf[:i])
time.Sleep(100 * time.Microsecond)
stream, err := sesh.Accept()
if err != nil {
t.Error("failed to accept stream", err)
return
}
i, err = stream.Read(buf)
if err != nil {
t.Error("failed to read", err)
return
}
if i != smallPayloadLen {
t.Errorf("expected read %v, got %v", smallPayloadLen, i)
return
}
if !bytes.Equal(buf[:i], testPayload) {
t.Error("expected", testPayload,
"got", buf[:i])
return
}
})
t.Run("Nil buf", func(t *testing.T) {
f.StreamID = streamID
i, _ := sesh.Obfs(f, obfsBuf, 0)
streamID++
writingEnd.Write(obfsBuf[:i])
time.Sleep(100 * time.Microsecond)
stream, _ := sesh.Accept()
i, err := stream.Read(nil)
if i != 0 || err != nil {
t.Error("expecting", 0, nil,
"got", i, err)
}
})
t.Run("Read after stream close", func(t *testing.T) {
f.StreamID = streamID
i, _ := sesh.Obfs(f, obfsBuf, 0)
streamID++
writingEnd.Write(obfsBuf[:i])
time.Sleep(100 * time.Microsecond)
stream, _ := sesh.Accept()
stream.Close()
i, err := stream.Read(buf)
if err != nil {
t.Error("failed to read", err)
}
if i != smallPayloadLen {
t.Errorf("expected read %v, got %v", smallPayloadLen, i)
}
if !bytes.Equal(buf[:i], testPayload) {
t.Error("expected", testPayload,
"got", buf[:i])
}
_, err = stream.Read(buf)
if err == nil {
t.Error("expecting error", ErrBrokenStream,
"got nil error")
}
})
t.Run("Read after session close", func(t *testing.T) {
f.StreamID = streamID
i, _ := sesh.Obfs(f, obfsBuf, 0)
streamID++
writingEnd.Write(obfsBuf[:i])
time.Sleep(100 * time.Microsecond)
stream, _ := sesh.Accept()
sesh.Close()
i, err := stream.Read(buf)
if err != nil {
t.Error("failed to read", err)
}
if i != smallPayloadLen {
t.Errorf("expected read %v, got %v", smallPayloadLen, i)
}
if !bytes.Equal(buf[:i], testPayload) {
t.Error("expected", testPayload,
"got", buf[:i])
}
_, err = stream.Read(buf)
if err == nil {
t.Error("expecting error", ErrBrokenStream,
"got nil error")
}
})
})
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}
}
func TestStream_SetWriteToTimeout(t *testing.T) {
seshes := map[string]*Session{
"ordered": setupSesh(false, emptyKey, E_METHOD_PLAIN),
"unordered": setupSesh(true, emptyKey, E_METHOD_PLAIN),
}
for name, sesh := range seshes {
t.Run(name, func(t *testing.T) {
stream, _ := sesh.OpenStream()
stream.SetWriteToTimeout(100 * time.Millisecond)
done := make(chan struct{})
go func() {
stream.WriteTo(ioutil.Discard)
done <- struct{}{}
}()
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select {
case <-done:
return
case <-time.After(500 * time.Millisecond):
t.Error("didn't timeout")
}
})
}
}
func TestStream_SetReadFromTimeout(t *testing.T) {
seshes := map[string]*Session{
"ordered": setupSesh(false, emptyKey, E_METHOD_PLAIN),
"unordered": setupSesh(true, emptyKey, E_METHOD_PLAIN),
}
for name, sesh := range seshes {
t.Run(name, func(t *testing.T) {
stream, _ := sesh.OpenStream()
stream.SetReadFromTimeout(100 * time.Millisecond)
done := make(chan struct{})
go func() {
stream.ReadFrom(connutil.Discard())
done <- struct{}{}
}()
select {
case <-done:
return
case <-time.After(500 * time.Millisecond):
t.Error("didn't timeout")
}
})
}
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}