v1.0.0

transport/internet/udp/dispatcher_test.go

@@ -0,0 +1,86 @@
+package udp_test
+
+import (
+	"context"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/xtls/xray-core/v1/common"
+	"github.com/xtls/xray-core/v1/common/buf"
+	"github.com/xtls/xray-core/v1/common/net"
+	"github.com/xtls/xray-core/v1/common/protocol/udp"
+	"github.com/xtls/xray-core/v1/features/routing"
+	"github.com/xtls/xray-core/v1/transport"
+	. "github.com/xtls/xray-core/v1/transport/internet/udp"
+	"github.com/xtls/xray-core/v1/transport/pipe"
+)
+
+type TestDispatcher struct {
+	OnDispatch func(ctx context.Context, dest net.Destination) (*transport.Link, error)
+}
+
+func (d *TestDispatcher) Dispatch(ctx context.Context, dest net.Destination) (*transport.Link, error) {
+	return d.OnDispatch(ctx, dest)
+}
+
+func (d *TestDispatcher) Start() error {
+	return nil
+}
+
+func (d *TestDispatcher) Close() error {
+	return nil
+}
+
+func (*TestDispatcher) Type() interface{} {
+	return routing.DispatcherType()
+}
+
+func TestSameDestinationDispatching(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	uplinkReader, uplinkWriter := pipe.New(pipe.WithSizeLimit(1024))
+	downlinkReader, downlinkWriter := pipe.New(pipe.WithSizeLimit(1024))
+
+	go func() {
+		for {
+			data, err := uplinkReader.ReadMultiBuffer()
+			if err != nil {
+				break
+			}
+			err = downlinkWriter.WriteMultiBuffer(data)
+			common.Must(err)
+		}
+	}()
+
+	var count uint32
+	td := &TestDispatcher{
+		OnDispatch: func(ctx context.Context, dest net.Destination) (*transport.Link, error) {
+			atomic.AddUint32(&count, 1)
+			return &transport.Link{Reader: downlinkReader, Writer: uplinkWriter}, nil
+		},
+	}
+	dest := net.UDPDestination(net.LocalHostIP, 53)
+
+	b := buf.New()
+	b.WriteString("abcd")
+
+	var msgCount uint32
+	dispatcher := NewDispatcher(td, func(ctx context.Context, packet *udp.Packet) {
+		atomic.AddUint32(&msgCount, 1)
+	})
+
+	dispatcher.Dispatch(ctx, dest, b)
+	for i := 0; i < 5; i++ {
+		dispatcher.Dispatch(ctx, dest, b)
+	}
+
+	time.Sleep(time.Second)
+	cancel()
+
+	if count != 1 {
+		t.Error("count: ", count)
+	}
+	if v := atomic.LoadUint32(&msgCount); v != 6 {
+		t.Error("msgCount: ", v)
+	}
+}