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package quic
import (
"crypto/rand"
"errors"
"net"
"testing"
"time"
"github.com/quic-go/quic-go/internal/protocol"
"github.com/quic-go/quic-go/internal/utils"
"github.com/stretchr/testify/require"
)
func TestPacketHandlerMapAddAndRemove(t *testing.T) {
m := newPacketHandlerMap(nil, utils.DefaultLogger)
connID := protocol.ParseConnectionID([]byte{1, 2, 3, 4})
h := &mockPacketHandler{}
require.True(t, m.Add(connID, h))
got, ok := m.Get(connID)
require.True(t, ok)
require.Equal(t, h, got)
// cannot add the same handler twice
require.False(t, m.Add(connID, h))
got, ok = m.Get(connID)
require.True(t, ok)
require.Equal(t, h, got)
// remove the handler
m.Remove(connID)
got, ok = m.Get(connID)
require.False(t, ok)
require.Nil(t, got)
}
func TestPacketHandlerMapAddWithClientChosenConnID(t *testing.T) {
m := newPacketHandlerMap(nil, utils.DefaultLogger)
h := &mockPacketHandler{}
connID1 := protocol.ParseConnectionID([]byte{1, 2, 3, 4})
connID2 := protocol.ParseConnectionID([]byte{4, 3, 2, 1})
require.True(t, m.AddWithConnID(connID1, connID2, h))
// collision of the connection ID, this handler should not be added
require.False(t, m.AddWithConnID(connID1, protocol.ParseConnectionID([]byte{1, 2, 3}), nil))
got, ok := m.Get(connID1)
require.True(t, ok)
require.Equal(t, h, got)
got, ok = m.Get(connID2)
require.True(t, ok)
require.Equal(t, h, got)
}
func TestPacketHandlerMapRetire(t *testing.T) {
m := newPacketHandlerMap(nil, utils.DefaultLogger)
dur := scaleDuration(10 * time.Millisecond)
m.deleteRetiredConnsAfter = dur
connID := protocol.ParseConnectionID([]byte{1, 2, 3, 4})
h := &mockPacketHandler{}
require.True(t, m.Add(connID, h))
m.Retire(connID)
// immediately after retiring, the handler should still be there
got, ok := m.Get(connID)
require.True(t, ok)
require.Equal(t, h, got)
// after the timeout, the handler should be removed
time.Sleep(dur)
require.Eventually(t, func() bool {
_, ok := m.Get(connID)
return !ok
}, dur, dur/10)
}
func TestPacketHandlerMapAddGetRemoveResetTokens(t *testing.T) {
m := newPacketHandlerMap(nil, utils.DefaultLogger)
token := protocol.StatelessResetToken{1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf}
handler := &mockPacketHandler{}
m.AddResetToken(token, handler)
h, ok := m.GetByResetToken(token)
require.True(t, ok)
require.Equal(t, handler, h)
m.RemoveResetToken(token)
_, ok = m.GetByResetToken(token)
require.False(t, ok)
}
func TestPacketHandlerMapReplaceWithLocalClosed(t *testing.T) {
var closePackets []closePacket
m := newPacketHandlerMap(
func(p closePacket) { closePackets = append(closePackets, p) },
utils.DefaultLogger,
)
dur := scaleDuration(10 * time.Millisecond)
m.deleteRetiredConnsAfter = dur
handler := &mockPacketHandler{}
connID := protocol.ParseConnectionID([]byte{4, 3, 2, 1})
require.True(t, m.Add(connID, handler))
m.ReplaceWithClosed([]protocol.ConnectionID{connID}, []byte("foobar"))
h, ok := m.Get(connID)
require.True(t, ok)
require.NotEqual(t, handler, h)
addr := &net.UDPAddr{IP: net.IPv4(1, 2, 3, 4), Port: 1234}
h.handlePacket(receivedPacket{remoteAddr: addr})
require.Len(t, closePackets, 1)
require.Equal(t, addr, closePackets[0].addr)
require.Equal(t, []byte("foobar"), closePackets[0].payload)
time.Sleep(dur)
require.Eventually(t, func() bool {
_, ok := m.Get(connID)
return !ok
}, time.Second, 10*time.Millisecond)
}
func TestPacketHandlerMapReplaceWithRemoteClosed(t *testing.T) {
var closePackets []closePacket
m := newPacketHandlerMap(
func(p closePacket) { closePackets = append(closePackets, p) },
utils.DefaultLogger,
)
dur := scaleDuration(50 * time.Millisecond)
m.deleteRetiredConnsAfter = dur
handler := &mockPacketHandler{}
connID := protocol.ParseConnectionID([]byte{4, 3, 2, 1})
require.True(t, m.Add(connID, handler))
m.ReplaceWithClosed([]protocol.ConnectionID{connID}, nil)
h, ok := m.Get(connID)
require.True(t, ok)
require.NotEqual(t, handler, h)
addr := &net.UDPAddr{IP: net.IPv4(1, 2, 3, 4), Port: 1234}
h.handlePacket(receivedPacket{remoteAddr: addr})
require.Empty(t, closePackets)
time.Sleep(dur)
require.Eventually(t, func() bool {
_, ok := m.Get(connID)
return !ok
}, time.Second, 10*time.Millisecond)
}
func TestPacketHandlerMapClose(t *testing.T) {
m := newPacketHandlerMap(nil, utils.DefaultLogger)
testErr := errors.New("shutdown")
const numConns = 10
destroyChan := make(chan error, 2*numConns)
for i := 0; i < numConns; i++ {
conn := &mockPacketHandler{destruction: destroyChan}
b := make([]byte, 12)
rand.Read(b)
m.Add(protocol.ParseConnectionID(b), conn)
}
m.Close(testErr)
// check that Close can be called multiple times
m.Close(errors.New("close"))
for i := 0; i < numConns; i++ {
select {
case err := <-destroyChan:
require.Equal(t, testErr, err)
default:
t.Fatalf("connection not destroyed")
}
}
select {
case err := <-destroyChan:
t.Fatalf("connection destroyed more than once: %s", err)
default:
}
}
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