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package self_test
import (
"context"
"fmt"
"io"
"net"
"testing"
"time"
"github.com/quic-go/quic-go"
quicproxy "github.com/quic-go/quic-go/integrationtests/tools/proxy"
"github.com/stretchr/testify/require"
)
func runServerForRTTTest(t *testing.T) (net.Addr, <-chan error) {
ln, err := quic.Listen(
newUDPConnLocalhost(t),
getTLSConfig(),
getQuicConfig(nil),
)
require.NoError(t, err)
t.Cleanup(func() { ln.Close() })
errChan := make(chan error, 1)
go func() {
defer close(errChan)
for {
conn, err := ln.Accept(context.Background())
if err != nil {
errChan <- fmt.Errorf("accept error: %w", err)
return
}
str, err := conn.OpenStream()
if err != nil {
errChan <- fmt.Errorf("open stream error: %w", err)
return
}
_, err = str.Write(PRData)
if err != nil {
errChan <- fmt.Errorf("write error: %w", err)
return
}
str.Close()
}
}()
return ln.Addr(), errChan
}
func TestDownloadWithFixedRTT(t *testing.T) {
addr, errChan := runServerForRTTTest(t)
for _, rtt := range []time.Duration{
10 * time.Millisecond,
100 * time.Millisecond,
250 * time.Millisecond,
} {
t.Run(fmt.Sprintf("RTT %s", rtt), func(t *testing.T) {
t.Cleanup(func() {
select {
case err := <-errChan:
t.Errorf("server error: %v", err)
default:
}
})
proxy := quicproxy.Proxy{
Conn: newUDPConnLocalhost(t),
ServerAddr: &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: addr.(*net.UDPAddr).Port},
DelayPacket: func(quicproxy.Direction, net.Addr, net.Addr, []byte) time.Duration { return rtt / 2 },
}
require.NoError(t, proxy.Start())
t.Cleanup(func() { proxy.Close() })
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
conn, err := quic.Dial(
ctx,
newUDPConnLocalhost(t),
proxy.LocalAddr(),
getTLSClientConfig(),
getQuicConfig(nil),
)
require.NoError(t, err)
defer conn.CloseWithError(0, "")
str, err := conn.AcceptStream(ctx)
require.NoError(t, err)
data, err := io.ReadAll(str)
require.NoError(t, err)
require.Equal(t, PRData, data)
})
}
}
func TestDownloadWithReordering(t *testing.T) {
addr, errChan := runServerForRTTTest(t)
for _, rtt := range []time.Duration{
5 * time.Millisecond,
30 * time.Millisecond,
} {
t.Run(fmt.Sprintf("RTT %s", rtt), func(t *testing.T) {
t.Cleanup(func() {
select {
case err := <-errChan:
t.Errorf("server error: %v", err)
default:
}
})
proxy := quicproxy.Proxy{
Conn: newUDPConnLocalhost(t),
ServerAddr: &net.UDPAddr{IP: net.IPv4(127, 0, 0, 1), Port: addr.(*net.UDPAddr).Port},
DelayPacket: func(quicproxy.Direction, net.Addr, net.Addr, []byte) time.Duration {
return randomDuration(rtt/2, rtt*3/2) / 2
},
}
require.NoError(t, proxy.Start())
t.Cleanup(func() { proxy.Close() })
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
conn, err := quic.Dial(
ctx,
newUDPConnLocalhost(t),
proxy.LocalAddr(),
getTLSClientConfig(),
getQuicConfig(nil),
)
require.NoError(t, err)
defer conn.CloseWithError(0, "")
str, err := conn.AcceptStream(ctx)
require.NoError(t, err)
data, err := io.ReadAll(str)
require.NoError(t, err)
require.Equal(t, PRData, data)
})
}
}
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