93 lines
2.3 KiB
Go
93 lines
2.3 KiB
Go
package vpnruntime
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import (
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"context"
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"sync"
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"testing"
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"time"
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)
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type recordingGatewayTransport struct {
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mu sync.Mutex
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batches [][][]byte
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}
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func (t *recordingGatewayTransport) SendGatewayPacketBatch(ctx context.Context, packets [][]byte) error {
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copied := make([][]byte, len(packets))
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for i, packet := range packets {
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copied[i] = append([]byte(nil), packet...)
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}
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t.mu.Lock()
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t.batches = append(t.batches, copied)
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t.mu.Unlock()
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return nil
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}
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func (t *recordingGatewayTransport) ReceiveGatewayPacketBatch(ctx context.Context, timeout time.Duration) ([][]byte, error) {
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return nil, ctx.Err()
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}
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func (t *recordingGatewayTransport) firstBatch() [][]byte {
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t.mu.Lock()
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defer t.mu.Unlock()
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if len(t.batches) == 0 {
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return nil
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}
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return t.batches[0]
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}
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func TestGatewayUploadPrioritizesTCPControlPackets(t *testing.T) {
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transport := &recordingGatewayTransport{}
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gateway := &Gateway{Transport: transport, VPNConnectionID: "vpn-1"}
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priorityPackets := make(chan []byte, 1)
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packets := make(chan []byte, 1)
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normal := testIPv4TCPPacket([4]byte{101, 32, 118, 25}, [4]byte{10, 77, 0, 2}, 443, 37566)
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priority := testIPv4TCPPacket([4]byte{192, 168, 200, 95}, [4]byte{10, 77, 0, 2}, 3389, 51000)
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priority[33] = 0x12
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packets <- normal
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priorityPackets <- priority
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ctx, cancel := context.WithCancel(context.Background())
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done := make(chan error, 1)
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go func() {
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done <- gateway.uploadGatewayPackets(ctx, priorityPackets, packets)
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}()
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defer func() {
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cancel()
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<-done
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}()
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deadline := time.After(time.Second)
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for {
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if batch := transport.firstBatch(); len(batch) == 1 {
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if string(batch[0]) != string(priority) {
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t.Fatalf("first uploaded packet = %#v, want priority packet", batch[0])
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}
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return
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}
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select {
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case <-deadline:
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t.Fatal("timed out waiting for first gateway upload batch")
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default:
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time.Sleep(time.Millisecond)
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}
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}
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}
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func TestIsTCPControlPacket(t *testing.T) {
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packet := testIPv4TCPPacket([4]byte{192, 168, 200, 95}, [4]byte{10, 77, 0, 2}, 3389, 51000)
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if isTCPControlPacket(packet) {
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t.Fatal("packet without control flags was classified as control")
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}
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packet[33] = 0x12
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if !isTCPControlPacket(packet) {
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t.Fatal("tcp syn-ack was not classified as control")
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}
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packet[9] = 17
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if isTCPControlPacket(packet) {
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t.Fatal("udp packet was classified as tcp control")
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}
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}
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