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package self_test
import (
"context"
"crypto/rand"
"net"
"sync/atomic"
"testing"
"time"
"github.com/quic-go/quic-go"
quicproxy "github.com/quic-go/quic-go/integrationtests/tools/proxy"
"github.com/stretchr/testify/require"
)
func TestStatelessResets(t *testing.T) {
t.Run("zero-length connection IDs", func(t *testing.T) {
testStatelessReset(t, 0)
})
t.Run("10 byte connection IDs", func(t *testing.T) {
testStatelessReset(t, 10)
})
}
func testStatelessReset(t *testing.T, connIDLen int) {
var statelessResetKey quic.StatelessResetKey
rand.Read(statelessResetKey[:])
c := newUDPConnLocalhost(t)
tr := &quic.Transport{
Conn: c,
StatelessResetKey: &statelessResetKey,
}
defer tr.Close()
ln, err := tr.Listen(getTLSConfig(), getQuicConfig(nil))
require.NoError(t, err)
serverErr := make(chan error, 1)
go func() {
conn, err := ln.Accept(context.Background())
if err != nil {
serverErr <- err
return
}
str, err := conn.OpenStream()
if err != nil {
serverErr <- err
return
}
_, err = str.Write([]byte("foobar"))
if err != nil {
serverErr <- err
return
}
close(serverErr)
}()
var drop atomic.Bool
proxy := quicproxy.Proxy{
Conn: newUDPConnLocalhost(t),
ServerAddr: ln.Addr().(*net.UDPAddr),
DropPacket: func(quicproxy.Direction, net.Addr, net.Addr, []byte) bool { return drop.Load() },
}
require.NoError(t, proxy.Start())
defer proxy.Close()
var conn *quic.Conn
if connIDLen > 0 {
cl := &quic.Transport{
Conn: newUDPConnLocalhost(t),
ConnectionIDLength: connIDLen,
}
defer cl.Close()
var err error
conn, err = cl.Dial(
context.Background(),
proxy.LocalAddr(),
getTLSClientConfig(),
getQuicConfig(&quic.Config{MaxIdleTimeout: 2 * time.Second}),
)
require.NoError(t, err)
} else {
conn, err = quic.Dial(
context.Background(),
newUDPConnLocalhost(t),
proxy.LocalAddr(),
getTLSClientConfig(),
getQuicConfig(&quic.Config{MaxIdleTimeout: 2 * time.Second}),
)
require.NoError(t, err)
}
str, err := conn.AcceptStream(context.Background())
require.NoError(t, err)
data := make([]byte, 6)
_, err = str.Read(data)
require.NoError(t, err)
require.Equal(t, []byte("foobar"), data)
// make sure that the CONNECTION_CLOSE is dropped
drop.Store(true)
require.NoError(t, ln.Close())
require.NoError(t, tr.Close())
require.NoError(t, <-serverErr)
time.Sleep(100 * time.Millisecond)
// We need to create a new Transport here, since the old one is still sending out
// CONNECTION_CLOSE packets for (recently) closed connections).
tr2 := &quic.Transport{
Conn: c,
StatelessResetKey: &statelessResetKey,
}
defer tr2.Close()
ln2, err := tr2.Listen(getTLSConfig(), getQuicConfig(nil))
require.NoError(t, err)
drop.Store(false)
// Trigger something (not too small) to be sent, so that we receive the stateless reset.
// If the client already sent another packet, it might already have received a packet.
_, serr := str.Write([]byte("Lorem ipsum dolor sit amet."))
if serr == nil {
_, serr = str.Read([]byte{0})
}
require.Error(t, serr)
require.IsType(t, &quic.StatelessResetError{}, serr)
require.NoError(t, ln2.Close())
}
|
