64 lines
1.9 KiB
Go
64 lines
1.9 KiB
Go
// Copyright 2020 The gVisor Authors.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package udp_recv_mcast_bcast_test
|
|
|
|
import (
|
|
"flag"
|
|
"net"
|
|
"testing"
|
|
|
|
"golang.org/x/sys/unix"
|
|
"gvisor.dev/gvisor/pkg/tcpip"
|
|
"gvisor.dev/gvisor/test/packetimpact/testbench"
|
|
)
|
|
|
|
func init() {
|
|
testbench.RegisterFlags(flag.CommandLine)
|
|
}
|
|
|
|
func TestUDPRecvMulticastBroadcast(t *testing.T) {
|
|
dut := testbench.NewDUT(t)
|
|
defer dut.TearDown()
|
|
boundFD, remotePort := dut.CreateBoundSocket(unix.SOCK_DGRAM, unix.IPPROTO_UDP, net.IPv4(0, 0, 0, 0))
|
|
defer dut.Close(boundFD)
|
|
conn := testbench.NewUDPIPv4(t, testbench.UDP{DstPort: &remotePort}, testbench.UDP{SrcPort: &remotePort})
|
|
defer conn.Close()
|
|
|
|
for _, bcastAddr := range []net.IP{
|
|
broadcastAddr(net.ParseIP(testbench.RemoteIPv4), net.CIDRMask(testbench.IPv4PrefixLength, 32)),
|
|
net.IPv4(255, 255, 255, 255),
|
|
net.IPv4(224, 0, 0, 1),
|
|
} {
|
|
payload := testbench.GenerateRandomPayload(t, 1<<10)
|
|
conn.SendIP(
|
|
testbench.IPv4{DstAddr: testbench.Address(tcpip.Address(bcastAddr.To4()))},
|
|
testbench.UDP{},
|
|
&testbench.Payload{Bytes: payload},
|
|
)
|
|
t.Logf("Receiving packet sent to address: %s", bcastAddr)
|
|
if got, want := string(dut.Recv(boundFD, int32(len(payload)), 0)), string(payload); got != want {
|
|
t.Errorf("received payload does not match sent payload got: %s, want: %s", got, want)
|
|
}
|
|
}
|
|
}
|
|
|
|
func broadcastAddr(ip net.IP, mask net.IPMask) net.IP {
|
|
ip4 := ip.To4()
|
|
for i := range ip4 {
|
|
ip4[i] |= ^mask[i]
|
|
}
|
|
return ip4
|
|
}
|