forked from quic-go/quic-go
121 lines
3.5 KiB
Go
121 lines
3.5 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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"git.geeks-team.ru/gr1ffon/quic-go"
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"git.geeks-team.ru/gr1ffon/quic-go/internal/protocol"
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"git.geeks-team.ru/gr1ffon/quic-go/internal/synctest"
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"git.geeks-team.ru/gr1ffon/quic-go/internal/wire"
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"git.geeks-team.ru/gr1ffon/quic-go/testutils/simnet"
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"github.com/stretchr/testify/require"
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)
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func TestPacketDrops(t *testing.T) {
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for _, direction := range []protocol.Perspective{protocol.PerspectiveClient, protocol.PerspectiveServer} {
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t.Run(fmt.Sprintf("from %s", direction), func(t *testing.T) {
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testPacketDrops(t, direction)
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})
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}
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}
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func testPacketDrops(t *testing.T, direction protocol.Perspective) {
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synctest.Test(t, func(t *testing.T) {
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const numMessages = 50
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const rtt = 10 * time.Millisecond
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addrClient := &net.UDPAddr{IP: net.ParseIP("1.0.0.1"), Port: 9001}
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addrServer := &net.UDPAddr{IP: net.ParseIP("1.0.0.2"), Port: 9002}
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var numDroppedPackets atomic.Int32
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messageInterval := randomDuration(10*time.Millisecond, 100*time.Millisecond)
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dropDuration := randomDuration(messageInterval*3, 2*time.Second)
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dropDelay := randomDuration(25*time.Millisecond, numMessages*messageInterval/2)
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startTime := time.Now()
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n := &simnet.Simnet{
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Router: &droppingRouter{
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Drop: func(p simnet.Packet) bool {
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switch p.To {
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case addrClient:
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if direction == protocol.PerspectiveClient {
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return false
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}
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case addrServer:
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if direction == protocol.PerspectiveServer {
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return false
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}
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}
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if wire.IsLongHeaderPacket(p.Data[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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}
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settings := simnet.NodeBiDiLinkSettings{
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Downlink: simnet.LinkSettings{BitsPerSecond: 1e8, Latency: rtt / 4},
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Uplink: simnet.LinkSettings{BitsPerSecond: 1e8, Latency: rtt / 4},
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}
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clientPacketConn := n.NewEndpoint(addrClient, settings)
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defer clientPacketConn.Close()
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serverPacketConn := n.NewEndpoint(addrServer, settings)
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defer serverPacketConn.Close()
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require.NoError(t, n.Start())
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defer n.Close()
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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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ln, err := quic.Listen(serverPacketConn, getTLSConfig(), getQuicConfig(nil))
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require.NoError(t, err)
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defer ln.Close()
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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conn, err := quic.Dial(ctx, clientPacketConn, ln.Addr().(*net.UDPAddr), 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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defer serverConn.CloseWithError(0, "")
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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 := range numMessages {
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time.Sleep(messageInterval)
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if _, err := serverStr.Write([]byte{uint8(i + 1)}); err != nil {
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errChan <- err
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return
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}
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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 := range numMessages {
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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, byte(i+1), 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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