mirror of
https://github.com/refraction-networking/uquic.git
synced 2025-04-04 20:57:36 +03:00
92 lines
2.8 KiB
Go
92 lines
2.8 KiB
Go
package self_test
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import (
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"context"
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"fmt"
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"net"
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"sync/atomic"
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"testing"
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"time"
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"github.com/quic-go/quic-go"
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quicproxy "github.com/quic-go/quic-go/integrationtests/tools/proxy"
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"github.com/quic-go/quic-go/internal/wire"
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"github.com/stretchr/testify/require"
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)
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func TestDropTests(t *testing.T) {
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for _, direction := range []quicproxy.Direction{quicproxy.DirectionIncoming, quicproxy.DirectionOutgoing} {
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t.Run(fmt.Sprintf("in %s direction", direction), func(t *testing.T) {
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const numMessages = 15
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const rtt = 10 * time.Millisecond
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messageInterval := randomDuration(10*time.Millisecond, 100*time.Millisecond)
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dropDuration := randomDuration(messageInterval*3/2, 2*time.Second)
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dropDelay := randomDuration(25*time.Millisecond, numMessages*messageInterval/2)
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t.Logf("sending a message every %s, %d times", messageInterval, numMessages)
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t.Logf("dropping packets for %s, after a delay of %s", dropDuration, dropDelay)
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startTime := time.Now()
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ln, err := quic.Listen(newUPDConnLocalhost(t), getTLSConfig(), getQuicConfig(nil))
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require.NoError(t, err)
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defer ln.Close()
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var numDroppedPackets atomic.Int32
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proxy := &quicproxy.Proxy{
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Conn: newUPDConnLocalhost(t),
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ServerAddr: ln.Addr().(*net.UDPAddr),
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DelayPacket: func(quicproxy.Direction, []byte) time.Duration { return rtt / 2 },
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DropPacket: func(d quicproxy.Direction, b []byte) bool {
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if !d.Is(direction) {
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return false
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}
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if wire.IsLongHeaderPacket(b[0]) { // don't interfere with the handshake
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return false
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}
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drop := time.Now().After(startTime.Add(dropDelay)) && time.Now().Before(startTime.Add(dropDelay).Add(dropDuration))
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if drop {
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numDroppedPackets.Add(1)
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}
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return drop
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},
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}
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require.NoError(t, proxy.Start())
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defer proxy.Close()
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ctx, cancel := context.WithTimeout(context.Background(), time.Second)
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defer cancel()
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conn, err := quic.Dial(ctx, newUPDConnLocalhost(t), proxy.LocalAddr(), getTLSClientConfig(), getQuicConfig(nil))
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require.NoError(t, err)
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defer conn.CloseWithError(0, "")
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serverConn, err := ln.Accept(ctx)
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require.NoError(t, err)
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serverStr, err := serverConn.OpenUniStream()
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require.NoError(t, err)
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errChan := make(chan error, 1)
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go func() {
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for i := uint8(1); i <= numMessages; i++ {
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if _, err := serverStr.Write([]byte{i}); err != nil {
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errChan <- err
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return
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}
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time.Sleep(messageInterval)
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}
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}()
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str, err := conn.AcceptUniStream(ctx)
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require.NoError(t, err)
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for i := uint8(1); i <= numMessages; i++ {
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b := []byte{0}
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n, err := str.Read(b)
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require.NoError(t, err)
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require.Equal(t, 1, n)
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require.Equal(t, i, b[0])
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}
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numDropped := numDroppedPackets.Load()
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t.Logf("dropped %d packets", numDropped)
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require.NotZero(t, numDropped)
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})
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}
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}
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