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package quic
import (
"bytes"
"fmt"
"net"
"os"
"runtime/pprof"
"strconv"
"strings"
"testing"
"time"
"github.com/quic-go/quic-go/internal/protocol"
"github.com/quic-go/quic-go/internal/wire"
"github.com/stretchr/testify/require"
)
// in the tests for the stream deadlines we set a deadline
// and wait to make an assertion when Read / Write was unblocked
// on the CIs, the timing is a lot less precise, so scale every duration by this factor
func scaleDuration(t time.Duration) time.Duration {
scaleFactor := 1
if f, err := strconv.Atoi(os.Getenv("TIMESCALE_FACTOR")); err == nil { // parsing "" errors, so this works fine if the env is not set
scaleFactor = f
}
if scaleFactor == 0 {
panic("TIMESCALE_FACTOR is 0")
}
return time.Duration(scaleFactor) * t
}
func newUDPConnLocalhost(t testing.TB) *net.UDPConn {
t.Helper()
conn, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: 0})
require.NoError(t, err)
t.Cleanup(func() { conn.Close() })
return conn
}
func getPacket(t *testing.T, connID protocol.ConnectionID) []byte {
return getPacketWithPacketType(t, connID, protocol.PacketTypeHandshake, 2)
}
func getPacketWithPacketType(t *testing.T, connID protocol.ConnectionID, typ protocol.PacketType, length protocol.ByteCount) []byte {
t.Helper()
b, err := (&wire.ExtendedHeader{
Header: wire.Header{
Type: typ,
DestConnectionID: connID,
Length: length,
Version: protocol.Version1,
},
PacketNumberLen: protocol.PacketNumberLen2,
}).Append(nil, protocol.Version1)
require.NoError(t, err)
return append(b, bytes.Repeat([]byte{42}, int(length)-2)...)
}
func areConnsRunning() bool {
var b bytes.Buffer
pprof.Lookup("goroutine").WriteTo(&b, 1)
return strings.Contains(b.String(), "quic-go.(*connection).run")
}
func areTransportsRunning() bool {
var b bytes.Buffer
pprof.Lookup("goroutine").WriteTo(&b, 1)
return strings.Contains(b.String(), "quic-go.(*Transport).listen")
}
func TestMain(m *testing.M) {
status := m.Run()
if status != 0 {
os.Exit(status)
}
if areConnsRunning() {
fmt.Println("stray connection goroutines found")
os.Exit(1)
}
if areTransportsRunning() {
fmt.Println("stray transport goroutines found")
os.Exit(1)
}
os.Exit(status)
}
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