645 lines
19 KiB
Go
645 lines
19 KiB
Go
package h2mux
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import (
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"bytes"
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"fmt"
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"io"
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"io/ioutil"
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"math/rand"
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"net"
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"os"
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"strconv"
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"sync"
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"testing"
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"time"
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log "github.com/sirupsen/logrus"
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"github.com/stretchr/testify/assert"
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)
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func TestMain(m *testing.M) {
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if os.Getenv("VERBOSE") == "1" {
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log.SetLevel(log.DebugLevel)
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}
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os.Exit(m.Run())
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}
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type DefaultMuxerPair struct {
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OriginMuxConfig MuxerConfig
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OriginMux *Muxer
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OriginConn net.Conn
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EdgeMuxConfig MuxerConfig
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EdgeMux *Muxer
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EdgeConn net.Conn
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doneC chan struct{}
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}
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func NewDefaultMuxerPair() *DefaultMuxerPair {
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origin, edge := net.Pipe()
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return &DefaultMuxerPair{
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OriginMuxConfig: MuxerConfig{Timeout: time.Second, IsClient: true, Name: "origin"},
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OriginConn: origin,
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EdgeMuxConfig: MuxerConfig{Timeout: time.Second, IsClient: false, Name: "edge"},
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EdgeConn: edge,
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doneC: make(chan struct{}),
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}
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}
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func (p *DefaultMuxerPair) Handshake(t *testing.T) {
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edgeErrC := make(chan error)
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originErrC := make(chan error)
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go func() {
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var err error
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p.EdgeMux, err = Handshake(p.EdgeConn, p.EdgeConn, p.EdgeMuxConfig)
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edgeErrC <- err
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}()
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go func() {
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var err error
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p.OriginMux, err = Handshake(p.OriginConn, p.OriginConn, p.OriginMuxConfig)
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originErrC <- err
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}()
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select {
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case err := <-edgeErrC:
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if err != nil {
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t.Fatalf("edge handshake failure: %s", err)
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}
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case <-time.After(time.Second * 5):
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t.Fatalf("edge handshake timeout")
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}
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select {
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case err := <-originErrC:
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if err != nil {
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t.Fatalf("origin handshake failure: %s", err)
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}
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case <-time.After(time.Second * 5):
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t.Fatalf("origin handshake timeout")
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}
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}
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func (p *DefaultMuxerPair) HandshakeAndServe(t *testing.T) {
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p.Handshake(t)
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var wg sync.WaitGroup
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wg.Add(2)
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go func() {
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err := p.EdgeMux.Serve()
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if err != nil && err != io.EOF && err != io.ErrClosedPipe {
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t.Errorf("error in edge muxer Serve(): %s", err)
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}
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p.OriginMux.Shutdown()
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wg.Done()
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}()
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go func() {
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err := p.OriginMux.Serve()
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if err != nil && err != io.EOF && err != io.ErrClosedPipe {
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t.Errorf("error in origin muxer Serve(): %s", err)
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}
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p.EdgeMux.Shutdown()
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wg.Done()
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}()
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go func() {
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// notify when both muxes have stopped serving
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wg.Wait()
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close(p.doneC)
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}()
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}
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func (p *DefaultMuxerPair) Wait(t *testing.T) {
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select {
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case <-p.doneC:
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return
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case <-time.After(5 * time.Second):
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t.Fatal("timeout waiting for shutdown")
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}
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}
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func TestHandshake(t *testing.T) {
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muxPair := NewDefaultMuxerPair()
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muxPair.Handshake(t)
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AssertIfPipeReadable(t, muxPair.OriginConn)
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AssertIfPipeReadable(t, muxPair.EdgeConn)
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}
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func TestSingleStream(t *testing.T) {
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closeC := make(chan struct{})
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muxPair := NewDefaultMuxerPair()
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muxPair.OriginMuxConfig.Handler = MuxedStreamFunc(func(stream *MuxedStream) error {
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defer close(closeC)
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if len(stream.Headers) != 1 {
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t.Fatalf("expected %d headers, got %d", 1, len(stream.Headers))
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}
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if stream.Headers[0].Name != "test-header" {
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t.Fatalf("expected header name %s, got %s", "test-header", stream.Headers[0].Name)
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}
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if stream.Headers[0].Value != "headerValue" {
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t.Fatalf("expected header value %s, got %s", "headerValue", stream.Headers[0].Value)
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}
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headers := []Header{
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Header{Name: "response-header", Value: "responseValue"},
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}
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stream.WriteHeaders(headers)
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assert.Equal(t, headers, stream.writeHeaders)
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assert.False(t, stream.headersSent)
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buf := []byte("Hello world")
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stream.Write(buf)
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// after this receive, the edge closed the stream
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<-closeC
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n, err := io.ReadFull(stream, buf)
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if n > 0 {
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t.Fatalf("read %d bytes after EOF", n)
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}
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if err != io.EOF {
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t.Fatalf("expected EOF, got %s", err)
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}
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return nil
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})
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muxPair.HandshakeAndServe(t)
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stream, err := muxPair.EdgeMux.OpenStream(
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[]Header{Header{Name: "test-header", Value: "headerValue"}},
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nil,
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)
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if err != nil {
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t.Fatalf("error in OpenStream: %s", err)
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}
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if len(stream.Headers) != 1 {
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t.Fatalf("expected %d headers, got %d", 1, len(stream.Headers))
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}
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if stream.Headers[0].Name != "response-header" {
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t.Fatalf("expected header name %s, got %s", "response-header", stream.Headers[0].Name)
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}
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if stream.Headers[0].Value != "responseValue" {
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t.Fatalf("expected header value %s, got %s", "responseValue", stream.Headers[0].Value)
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}
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responseBody := make([]byte, 11)
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n, err := io.ReadFull(stream, responseBody)
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if err != nil {
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t.Fatalf("error from (*MuxedStream).Read: %s", err)
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}
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if n != len(responseBody) {
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t.Fatalf("expected response body to have %d bytes, got %d", len(responseBody), n)
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}
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if string(responseBody) != "Hello world" {
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t.Fatalf("expected response body %s, got %s", "Hello world", responseBody)
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}
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stream.Close()
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closeC <- struct{}{}
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n, err = stream.Write([]byte("aaaaa"))
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if n > 0 {
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t.Fatalf("wrote %d bytes after EOF", n)
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}
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if err != io.EOF {
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t.Fatalf("expected EOF, got %s", err)
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}
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<-closeC
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}
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func TestSingleStreamLargeResponseBody(t *testing.T) {
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muxPair := NewDefaultMuxerPair()
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bodySize := 1 << 24
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muxPair.OriginMuxConfig.Handler = MuxedStreamFunc(func(stream *MuxedStream) error {
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if len(stream.Headers) != 1 {
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t.Fatalf("expected %d headers, got %d", 1, len(stream.Headers))
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}
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if stream.Headers[0].Name != "test-header" {
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t.Fatalf("expected header name %s, got %s", "test-header", stream.Headers[0].Name)
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}
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if stream.Headers[0].Value != "headerValue" {
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t.Fatalf("expected header value %s, got %s", "headerValue", stream.Headers[0].Value)
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}
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stream.WriteHeaders([]Header{
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Header{Name: "response-header", Value: "responseValue"},
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})
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payload := make([]byte, bodySize)
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for i := range payload {
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payload[i] = byte(i % 256)
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}
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n, err := stream.Write(payload)
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if err != nil {
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t.Fatalf("origin write error: %s", err)
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}
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if n != len(payload) {
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t.Fatalf("origin short write: %d/%d bytes", n, len(payload))
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}
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return nil
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})
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muxPair.HandshakeAndServe(t)
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stream, err := muxPair.EdgeMux.OpenStream(
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[]Header{Header{Name: "test-header", Value: "headerValue"}},
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nil,
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)
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if err != nil {
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t.Fatalf("error in OpenStream: %s", err)
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}
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if len(stream.Headers) != 1 {
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t.Fatalf("expected %d headers, got %d", 1, len(stream.Headers))
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}
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if stream.Headers[0].Name != "response-header" {
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t.Fatalf("expected header name %s, got %s", "response-header", stream.Headers[0].Name)
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}
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if stream.Headers[0].Value != "responseValue" {
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t.Fatalf("expected header value %s, got %s", "responseValue", stream.Headers[0].Value)
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}
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responseBody := make([]byte, bodySize)
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n, err := io.ReadFull(stream, responseBody)
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if err != nil {
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t.Fatalf("error from (*MuxedStream).Read: %s", err)
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}
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if n != len(responseBody) {
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t.Fatalf("expected response body to have %d bytes, got %d", len(responseBody), n)
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}
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}
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func TestMultipleStreams(t *testing.T) {
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muxPair := NewDefaultMuxerPair()
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maxStreams := 64
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errorsC := make(chan error, maxStreams)
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muxPair.OriginMuxConfig.Handler = MuxedStreamFunc(func(stream *MuxedStream) error {
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if len(stream.Headers) != 1 {
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t.Fatalf("expected %d headers, got %d", 1, len(stream.Headers))
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}
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if stream.Headers[0].Name != "client-token" {
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t.Fatalf("expected header name %s, got %s", "client-token", stream.Headers[0].Name)
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}
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log.Debugf("Got request for stream %s", stream.Headers[0].Value)
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stream.WriteHeaders([]Header{
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Header{Name: "response-token", Value: stream.Headers[0].Value},
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})
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log.Debugf("Wrote headers for stream %s", stream.Headers[0].Value)
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stream.Write([]byte("OK"))
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log.Debugf("Wrote body for stream %s", stream.Headers[0].Value)
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return nil
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})
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muxPair.HandshakeAndServe(t)
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var wg sync.WaitGroup
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wg.Add(maxStreams)
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for i := 0; i < maxStreams; i++ {
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go func(tokenId int) {
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defer wg.Done()
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tokenString := fmt.Sprintf("%d", tokenId)
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stream, err := muxPair.EdgeMux.OpenStream(
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[]Header{Header{Name: "client-token", Value: tokenString}},
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nil,
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)
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log.Debugf("Got headers for stream %d", tokenId)
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if err != nil {
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errorsC <- err
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return
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}
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if len(stream.Headers) != 1 {
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errorsC <- fmt.Errorf("stream %d has error: expected %d headers, got %d", stream.streamID, 1, len(stream.Headers))
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return
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}
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if stream.Headers[0].Name != "response-token" {
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errorsC <- fmt.Errorf("stream %d has error: expected header name %s, got %s", stream.streamID, "response-token", stream.Headers[0].Name)
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return
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}
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if stream.Headers[0].Value != tokenString {
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errorsC <- fmt.Errorf("stream %d has error: expected header value %s, got %s", stream.streamID, tokenString, stream.Headers[0].Value)
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return
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}
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responseBody := make([]byte, 2)
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n, err := io.ReadFull(stream, responseBody)
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if err != nil {
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errorsC <- fmt.Errorf("stream %d has error: error from (*MuxedStream).Read: %s", stream.streamID, err)
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return
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}
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if n != len(responseBody) {
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errorsC <- fmt.Errorf("stream %d has error: expected response body to have %d bytes, got %d", stream.streamID, len(responseBody), n)
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return
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}
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if string(responseBody) != "OK" {
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errorsC <- fmt.Errorf("stream %d has error: expected response body %s, got %s", stream.streamID, "OK", responseBody)
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return
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}
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}(i)
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}
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wg.Wait()
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close(errorsC)
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testFail := false
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for err := range errorsC {
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testFail = true
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log.Error(err)
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}
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if testFail {
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t.Fatalf("TestMultipleStreamsFlowControl failed")
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}
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}
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func TestMultipleStreamsFlowControl(t *testing.T) {
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maxStreams := 32
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errorsC := make(chan error, maxStreams)
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responseSizes := make([]int32, maxStreams)
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for i := 0; i < maxStreams; i++ {
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responseSizes[i] = rand.Int31n(int32(defaultWindowSize << 4))
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}
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muxPair := NewDefaultMuxerPair()
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muxPair.OriginMuxConfig.Handler = MuxedStreamFunc(func(stream *MuxedStream) error {
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if len(stream.Headers) != 1 {
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t.Fatalf("expected %d headers, got %d", 1, len(stream.Headers))
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}
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if stream.Headers[0].Name != "test-header" {
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t.Fatalf("expected header name %s, got %s", "test-header", stream.Headers[0].Name)
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}
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if stream.Headers[0].Value != "headerValue" {
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t.Fatalf("expected header value %s, got %s", "headerValue", stream.Headers[0].Value)
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}
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stream.WriteHeaders([]Header{
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Header{Name: "response-header", Value: "responseValue"},
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})
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payload := make([]byte, responseSizes[(stream.streamID-2)/2])
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for i := range payload {
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payload[i] = byte(i % 256)
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}
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n, err := stream.Write(payload)
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if err != nil {
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t.Fatalf("origin write error: %s", err)
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}
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if n != len(payload) {
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t.Fatalf("origin short write: %d/%d bytes", n, len(payload))
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}
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return nil
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})
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muxPair.HandshakeAndServe(t)
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var wg sync.WaitGroup
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wg.Add(maxStreams)
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for i := 0; i < maxStreams; i++ {
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go func(tokenId int) {
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defer wg.Done()
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stream, err := muxPair.EdgeMux.OpenStream(
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[]Header{Header{Name: "test-header", Value: "headerValue"}},
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nil,
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)
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if err != nil {
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errorsC <- fmt.Errorf("stream %d error in OpenStream: %s", stream.streamID, err)
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return
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}
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if len(stream.Headers) != 1 {
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errorsC <- fmt.Errorf("stream %d expected %d headers, got %d", stream.streamID, 1, len(stream.Headers))
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return
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}
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if stream.Headers[0].Name != "response-header" {
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errorsC <- fmt.Errorf("stream %d expected header name %s, got %s", stream.streamID, "response-header", stream.Headers[0].Name)
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return
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}
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if stream.Headers[0].Value != "responseValue" {
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errorsC <- fmt.Errorf("stream %d expected header value %s, got %s", stream.streamID, "responseValue", stream.Headers[0].Value)
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return
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}
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responseBody := make([]byte, responseSizes[(stream.streamID-2)/2])
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n, err := io.ReadFull(stream, responseBody)
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if err != nil {
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errorsC <- fmt.Errorf("stream %d error from (*MuxedStream).Read: %s", stream.streamID, err)
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return
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}
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if n != len(responseBody) {
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errorsC <- fmt.Errorf("stream %d expected response body to have %d bytes, got %d", stream.streamID, len(responseBody), n)
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return
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}
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}(i)
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}
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wg.Wait()
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close(errorsC)
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testFail := false
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for err := range errorsC {
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testFail = true
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log.Error(err)
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}
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if testFail {
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t.Fatalf("TestMultipleStreamsFlowControl failed")
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}
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}
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func TestGracefulShutdown(t *testing.T) {
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sendC := make(chan struct{})
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responseBuf := bytes.Repeat([]byte("Hello world"), 65536)
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muxPair := NewDefaultMuxerPair()
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muxPair.OriginMuxConfig.Handler = MuxedStreamFunc(func(stream *MuxedStream) error {
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stream.WriteHeaders([]Header{
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Header{Name: "response-header", Value: "responseValue"},
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})
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<-sendC
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log.Debugf("Writing %d bytes", len(responseBuf))
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stream.Write(responseBuf)
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stream.CloseWrite()
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log.Debugf("Wrote %d bytes", len(responseBuf))
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// Reading from the stream will block until the edge closes its end of the stream.
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// Otherwise, we'll close the whole connection before receiving the 'stream closed'
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// message from the edge.
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// Graceful shutdown works if you omit this, it just gives spurious errors for now -
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// TODO ignore errors when writing 'stream closed' and we're shutting down.
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stream.Read([]byte{0})
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log.Debugf("Handler ends")
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return nil
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})
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muxPair.HandshakeAndServe(t)
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stream, err := muxPair.EdgeMux.OpenStream(
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[]Header{Header{Name: "test-header", Value: "headerValue"}},
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nil,
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)
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// Start graceful shutdown of the edge mux - this should also close the origin mux when done
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muxPair.EdgeMux.Shutdown()
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close(sendC)
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if err != nil {
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t.Fatalf("error in OpenStream: %s", err)
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}
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responseBody := make([]byte, len(responseBuf))
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log.Debugf("Waiting for %d bytes", len(responseBuf))
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n, err := io.ReadFull(stream, responseBody)
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if err != nil {
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t.Fatalf("error from (*MuxedStream).Read with %d bytes read: %s", n, err)
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}
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if n != len(responseBody) {
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t.Fatalf("expected response body to have %d bytes, got %d", len(responseBody), n)
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}
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if !bytes.Equal(responseBuf, responseBody) {
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t.Fatalf("response body mismatch")
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}
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stream.Close()
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muxPair.Wait(t)
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}
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func TestUnexpectedShutdown(t *testing.T) {
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sendC := make(chan struct{})
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handlerFinishC := make(chan struct{})
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responseBuf := bytes.Repeat([]byte("Hello world"), 65536)
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muxPair := NewDefaultMuxerPair()
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muxPair.OriginMuxConfig.Handler = MuxedStreamFunc(func(stream *MuxedStream) error {
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defer close(handlerFinishC)
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stream.WriteHeaders([]Header{
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Header{Name: "response-header", Value: "responseValue"},
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})
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<-sendC
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n, err := stream.Read([]byte{0})
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if err != io.EOF {
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t.Fatalf("unexpected error from (*MuxedStream).Read: %s", err)
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}
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if n != 0 {
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t.Fatalf("expected empty read, got %d bytes", n)
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}
|
|
// Write comes after read, because write buffers data before it is flushed. It wouldn't know about EOF
|
|
// until some time later. Calling read first forces it to know about EOF now.
|
|
_, err = stream.Write(responseBuf)
|
|
if err != io.EOF {
|
|
t.Fatalf("unexpected error from (*MuxedStream).Write: %s", err)
|
|
}
|
|
return nil
|
|
})
|
|
muxPair.HandshakeAndServe(t)
|
|
|
|
stream, err := muxPair.EdgeMux.OpenStream(
|
|
[]Header{Header{Name: "test-header", Value: "headerValue"}},
|
|
nil,
|
|
)
|
|
// Close the underlying connection before telling the origin to write.
|
|
muxPair.EdgeConn.Close()
|
|
close(sendC)
|
|
if err != nil {
|
|
t.Fatalf("error in OpenStream: %s", err)
|
|
}
|
|
responseBody := make([]byte, len(responseBuf))
|
|
n, err := io.ReadFull(stream, responseBody)
|
|
if err != io.EOF {
|
|
t.Fatalf("unexpected error from (*MuxedStream).Read: %s", err)
|
|
}
|
|
if n != 0 {
|
|
t.Fatalf("expected response body to have %d bytes, got %d", 0, n)
|
|
}
|
|
// The write ordering requirement explained in the origin handler applies here too.
|
|
_, err = stream.Write(responseBuf)
|
|
if err != io.EOF {
|
|
t.Fatalf("unexpected error from (*MuxedStream).Write: %s", err)
|
|
}
|
|
<-handlerFinishC
|
|
}
|
|
|
|
func EchoHandler(stream *MuxedStream) error {
|
|
var buf bytes.Buffer
|
|
fmt.Fprintf(&buf, "Hello, world!\n\n# REQUEST HEADERS:\n\n")
|
|
for _, header := range stream.Headers {
|
|
fmt.Fprintf(&buf, "[%s] = %s\n", header.Name, header.Value)
|
|
}
|
|
stream.WriteHeaders([]Header{
|
|
{Name: ":status", Value: "200"},
|
|
{Name: "server", Value: "Echo-server/1.0"},
|
|
{Name: "date", Value: time.Now().Format(time.RFC850)},
|
|
{Name: "content-type", Value: "text/html; charset=utf-8"},
|
|
{Name: "content-length", Value: strconv.Itoa(buf.Len())},
|
|
})
|
|
buf.WriteTo(stream)
|
|
return nil
|
|
}
|
|
|
|
func TestOpenAfterDisconnect(t *testing.T) {
|
|
for i := 0; i < 3; i++ {
|
|
muxPair := NewDefaultMuxerPair()
|
|
muxPair.OriginMuxConfig.Handler = MuxedStreamFunc(EchoHandler)
|
|
muxPair.HandshakeAndServe(t)
|
|
|
|
switch i {
|
|
case 0:
|
|
// Close both directions of the connection to cause EOF on both peers.
|
|
muxPair.OriginConn.Close()
|
|
muxPair.EdgeConn.Close()
|
|
case 1:
|
|
// Close origin conn to cause EOF on origin first.
|
|
muxPair.OriginConn.Close()
|
|
case 2:
|
|
// Close edge conn to cause EOF on edge first.
|
|
muxPair.EdgeConn.Close()
|
|
}
|
|
|
|
_, err := muxPair.EdgeMux.OpenStream(
|
|
[]Header{Header{Name: "test-header", Value: "headerValue"}},
|
|
nil,
|
|
)
|
|
if err != ErrConnectionClosed {
|
|
t.Fatalf("unexpected error in OpenStream: %s", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestHPACK(t *testing.T) {
|
|
muxPair := NewDefaultMuxerPair()
|
|
muxPair.OriginMuxConfig.Handler = MuxedStreamFunc(EchoHandler)
|
|
muxPair.HandshakeAndServe(t)
|
|
|
|
stream, err := muxPair.EdgeMux.OpenStream(
|
|
[]Header{
|
|
{Name: ":method", Value: "RPC"},
|
|
{Name: ":scheme", Value: "capnp"},
|
|
{Name: ":path", Value: "*"},
|
|
},
|
|
nil,
|
|
)
|
|
if err != nil {
|
|
t.Fatalf("error in OpenStream: %s", err)
|
|
}
|
|
stream.Close()
|
|
|
|
for i := 0; i < 3; i++ {
|
|
stream, err := muxPair.EdgeMux.OpenStream(
|
|
[]Header{
|
|
{Name: ":method", Value: "GET"},
|
|
{Name: ":scheme", Value: "https"},
|
|
{Name: ":authority", Value: "tunnel.otterlyadorable.co.uk"},
|
|
{Name: ":path", Value: "/get"},
|
|
{Name: "accept-encoding", Value: "gzip"},
|
|
{Name: "cf-ray", Value: "378948953f044408-SFO-DOG"},
|
|
{Name: "cf-visitor", Value: "{\"scheme\":\"https\"}"},
|
|
{Name: "cf-connecting-ip", Value: "2400:cb00:0025:010d:0000:0000:0000:0001"},
|
|
{Name: "x-forwarded-for", Value: "2400:cb00:0025:010d:0000:0000:0000:0001"},
|
|
{Name: "x-forwarded-proto", Value: "https"},
|
|
{Name: "accept-language", Value: "en-gb"},
|
|
{Name: "referer", Value: "https://tunnel.otterlyadorable.co.uk/"},
|
|
{Name: "cookie", Value: "__cfduid=d4555095065f92daedc059490771967d81493032162"},
|
|
{Name: "connection", Value: "Keep-Alive"},
|
|
{Name: "cf-ipcountry", Value: "US"},
|
|
{Name: "accept", Value: "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"},
|
|
{Name: "user-agent", Value: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/603.2.4 (KHTML, like Gecko) Version/10.1.1 Safari/603.2.4"},
|
|
},
|
|
nil,
|
|
)
|
|
if err != nil {
|
|
t.Fatalf("error in OpenStream: %s", err)
|
|
}
|
|
if len(stream.Headers) == 0 {
|
|
t.Fatal("response has no headers")
|
|
}
|
|
if stream.Headers[0].Name != ":status" {
|
|
t.Fatalf("first header should be status, found %s instead", stream.Headers[0].Name)
|
|
}
|
|
if stream.Headers[0].Value != "200" {
|
|
t.Fatalf("expected status 200, got %s", stream.Headers[0].Value)
|
|
}
|
|
ioutil.ReadAll(stream)
|
|
stream.Close()
|
|
}
|
|
}
|
|
|
|
func AssertIfPipeReadable(t *testing.T, pipe io.ReadCloser) {
|
|
errC := make(chan error)
|
|
go func() {
|
|
b := []byte{0}
|
|
n, err := pipe.Read(b)
|
|
if n > 0 {
|
|
t.Fatalf("read pipe was not empty")
|
|
}
|
|
errC <- err
|
|
}()
|
|
select {
|
|
case err := <-errC:
|
|
if err != nil {
|
|
t.Fatalf("read error: %s", err)
|
|
}
|
|
case <-time.After(100 * time.Millisecond):
|
|
// nothing to read
|
|
}
|
|
}
|