cloudflared/ingress/icmp_posix_test.go
cthuang 495f9fb8bd TUN-6856: Refactor to lay foundation for tracing ICMP
Remove send and return methods from Funnel interface. Users of Funnel can provide their own send and return methods without wrapper to comply with the interface.
Move packet router to ingress package to avoid circular dependency
2022-10-17 19:48:35 +01:00

79 lines
1.6 KiB
Go

//go:build darwin || linux
package ingress
import (
"context"
"os"
"testing"
"time"
"github.com/google/gopacket/layers"
"github.com/rs/zerolog"
"github.com/stretchr/testify/require"
"golang.org/x/net/icmp"
"golang.org/x/net/ipv4"
"github.com/cloudflare/cloudflared/packet"
)
func TestFunnelIdleTimeout(t *testing.T) {
const (
idleTimeout = time.Second
echoID = 42573
startSeq = 8129
)
logger := zerolog.New(os.Stderr)
proxy, err := newICMPProxy(localhostIP, "", &logger, idleTimeout)
require.NoError(t, err)
ctx, cancel := context.WithCancel(context.Background())
proxyDone := make(chan struct{})
go func() {
proxy.Serve(ctx)
close(proxyDone)
}()
// Send a packet to register the flow
pk := packet.ICMP{
IP: &packet.IP{
Src: localhostIP,
Dst: localhostIP,
Protocol: layers.IPProtocolICMPv4,
},
Message: &icmp.Message{
Type: ipv4.ICMPTypeEcho,
Code: 0,
Body: &icmp.Echo{
ID: echoID,
Seq: startSeq,
Data: []byte(t.Name()),
},
},
}
muxer := newMockMuxer(0)
responder := packetResponder{
datagramMuxer: muxer,
}
require.NoError(t, proxy.Request(ctx, &pk, &responder))
validateEchoFlow(t, muxer, &pk)
// Send second request, should reuse the funnel
require.NoError(t, proxy.Request(ctx, &pk, &packetResponder{
datagramMuxer: nil,
}))
validateEchoFlow(t, muxer, &pk)
time.Sleep(idleTimeout * 2)
newMuxer := newMockMuxer(0)
newResponder := packetResponder{
datagramMuxer: newMuxer,
}
require.NoError(t, proxy.Request(ctx, &pk, &newResponder))
validateEchoFlow(t, newMuxer, &pk)
cancel()
<-proxyDone
}