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package self_test
import (
"context"
"io"
"testing"
"time"
"github.com/quic-go/quic-go"
"github.com/quic-go/quic-go/internal/handshake"
"github.com/quic-go/quic-go/internal/protocol"
"github.com/quic-go/quic-go/logging"
"github.com/stretchr/testify/require"
)
func TestKeyUpdates(t *testing.T) {
reset := handshake.SetKeyUpdateInterval(1) // update keys as frequently as possible
t.Cleanup(reset)
var sentHeaders []*logging.ShortHeader
var receivedHeaders []*logging.ShortHeader
countKeyPhases := func() (sent, received int) {
lastKeyPhase := protocol.KeyPhaseOne
for _, hdr := range sentHeaders {
if hdr.KeyPhase != lastKeyPhase {
sent++
lastKeyPhase = hdr.KeyPhase
}
}
lastKeyPhase = protocol.KeyPhaseOne
for _, hdr := range receivedHeaders {
if hdr.KeyPhase != lastKeyPhase {
received++
lastKeyPhase = hdr.KeyPhase
}
}
return
}
server, err := quic.Listen(newUDPConnLocalhost(t), getTLSConfig(), nil)
require.NoError(t, err)
defer server.Close()
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
conn, err := quic.Dial(
ctx,
newUDPConnLocalhost(t),
server.Addr(),
getTLSClientConfig(),
getQuicConfig(&quic.Config{Tracer: func(context.Context, logging.Perspective, quic.ConnectionID) *logging.ConnectionTracer {
return &logging.ConnectionTracer{
SentShortHeaderPacket: func(hdr *logging.ShortHeader, _ logging.ByteCount, _ logging.ECN, _ *logging.AckFrame, _ []logging.Frame) {
sentHeaders = append(sentHeaders, hdr)
},
ReceivedShortHeaderPacket: func(hdr *logging.ShortHeader, _ logging.ByteCount, _ logging.ECN, _ []logging.Frame) {
receivedHeaders = append(receivedHeaders, hdr)
},
}
}}),
)
require.NoError(t, err)
defer conn.CloseWithError(0, "")
serverConn, err := server.Accept(ctx)
require.NoError(t, err)
defer serverConn.CloseWithError(0, "")
serverErrChan := make(chan error, 1)
go func() {
str, err := serverConn.OpenUniStream()
if err != nil {
serverErrChan <- err
return
}
defer str.Close()
if _, err := str.Write(PRDataLong); err != nil {
serverErrChan <- err
return
}
close(serverErrChan)
}()
str, err := conn.AcceptUniStream(ctx)
require.NoError(t, err)
data, err := io.ReadAll(str)
require.NoError(t, err)
require.Equal(t, PRDataLong, data)
require.NoError(t, conn.CloseWithError(0, ""))
require.NoError(t, <-serverErrChan)
keyPhasesSent, keyPhasesReceived := countKeyPhases()
t.Logf("Used %d key phases on outgoing and %d key phases on incoming packets.", keyPhasesSent, keyPhasesReceived)
require.Greater(t, keyPhasesReceived, 10)
require.InDelta(t, keyPhasesSent, keyPhasesReceived, 2)
}
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