Internal change.

PiperOrigin-RevId: 311011004
This commit is contained in:
gVisor bot
2020-05-11 15:54:08 -07:00
parent e838e7ab34
commit 633e1b89bb
20 changed files with 167 additions and 53 deletions
+1
View File
@@ -13,6 +13,7 @@ go_library(
"dut_client.go",
"layers.go",
"rawsockets.go",
"testbench.go",
],
deps = [
"//pkg/tcpip",
+8 -16
View File
@@ -17,7 +17,6 @@
package testbench
import (
"flag"
"fmt"
"math/rand"
"net"
@@ -32,13 +31,6 @@ import (
"gvisor.dev/gvisor/pkg/tcpip/seqnum"
)
var localIPv4 = flag.String("local_ipv4", "", "local IPv4 address for test packets")
var remoteIPv4 = flag.String("remote_ipv4", "", "remote IPv4 address for test packets")
var localIPv6 = flag.String("local_ipv6", "", "local IPv6 address for test packets")
var remoteIPv6 = flag.String("remote_ipv6", "", "remote IPv6 address for test packets")
var localMAC = flag.String("local_mac", "", "local mac address for test packets")
var remoteMAC = flag.String("remote_mac", "", "remote mac address for test packets")
func portFromSockaddr(sa unix.Sockaddr) (uint16, error) {
switch sa := sa.(type) {
case *unix.SockaddrInet4:
@@ -64,11 +56,11 @@ func pickPort(domain, typ int) (fd int, sa unix.Sockaddr, err error) {
switch domain {
case unix.AF_INET:
var sa4 unix.SockaddrInet4
copy(sa4.Addr[:], net.ParseIP(*localIPv4).To4())
copy(sa4.Addr[:], net.ParseIP(LocalIPv4).To4())
sa = &sa4
case unix.AF_INET6:
var sa6 unix.SockaddrInet6
copy(sa6.Addr[:], net.ParseIP(*localIPv6).To16())
copy(sa6.Addr[:], net.ParseIP(LocalIPv6).To16())
sa = &sa6
default:
return -1, nil, fmt.Errorf("invalid domain %d, it should be one of unix.AF_INET or unix.AF_INET6", domain)
@@ -120,12 +112,12 @@ var _ layerState = (*etherState)(nil)
// newEtherState creates a new etherState.
func newEtherState(out, in Ether) (*etherState, error) {
lMAC, err := tcpip.ParseMACAddress(*localMAC)
lMAC, err := tcpip.ParseMACAddress(LocalMAC)
if err != nil {
return nil, err
}
rMAC, err := tcpip.ParseMACAddress(*remoteMAC)
rMAC, err := tcpip.ParseMACAddress(RemoteMAC)
if err != nil {
return nil, err
}
@@ -172,8 +164,8 @@ var _ layerState = (*ipv4State)(nil)
// newIPv4State creates a new ipv4State.
func newIPv4State(out, in IPv4) (*ipv4State, error) {
lIP := tcpip.Address(net.ParseIP(*localIPv4).To4())
rIP := tcpip.Address(net.ParseIP(*remoteIPv4).To4())
lIP := tcpip.Address(net.ParseIP(LocalIPv4).To4())
rIP := tcpip.Address(net.ParseIP(RemoteIPv4).To4())
s := ipv4State{
out: IPv4{SrcAddr: &lIP, DstAddr: &rIP},
in: IPv4{SrcAddr: &rIP, DstAddr: &lIP},
@@ -217,8 +209,8 @@ var _ layerState = (*ipv6State)(nil)
// newIPv6State creates a new ipv6State.
func newIPv6State(out, in IPv6) (*ipv6State, error) {
lIP := tcpip.Address(net.ParseIP(*localIPv6).To16())
rIP := tcpip.Address(net.ParseIP(*remoteIPv6).To16())
lIP := tcpip.Address(net.ParseIP(LocalIPv6).To16())
rIP := tcpip.Address(net.ParseIP(RemoteIPv6).To16())
s := ipv6State{
out: IPv6{SrcAddr: &lIP, DstAddr: &rIP},
in: IPv6{SrcAddr: &rIP, DstAddr: &lIP},
+21 -31
View File
@@ -16,12 +16,10 @@ package testbench
import (
"context"
"flag"
"net"
"strconv"
"syscall"
"testing"
"time"
pb "gvisor.dev/gvisor/test/packetimpact/proto/posix_server_go_proto"
@@ -30,29 +28,21 @@ import (
"google.golang.org/grpc/keepalive"
)
var (
posixServerIP = flag.String("posix_server_ip", "", "ip address to listen to for UDP commands")
posixServerPort = flag.Int("posix_server_port", 40000, "port to listen to for UDP commands")
rpcTimeout = flag.Duration("rpc_timeout", 100*time.Millisecond, "gRPC timeout")
rpcKeepalive = flag.Duration("rpc_keepalive", 10*time.Second, "gRPC keepalive")
)
// DUT communicates with the DUT to force it to make POSIX calls.
type DUT struct {
t *testing.T
conn *grpc.ClientConn
posixServer PosixClient
posixServer POSIXClient
}
// NewDUT creates a new connection with the DUT over gRPC.
func NewDUT(t *testing.T) DUT {
flag.Parse()
posixServerAddress := *posixServerIP + ":" + strconv.Itoa(*posixServerPort)
conn, err := grpc.Dial(posixServerAddress, grpc.WithInsecure(), grpc.WithKeepaliveParams(keepalive.ClientParameters{Timeout: *rpcKeepalive}))
posixServerAddress := POSIXServerIP + ":" + strconv.Itoa(POSIXServerPort)
conn, err := grpc.Dial(posixServerAddress, grpc.WithInsecure(), grpc.WithKeepaliveParams(keepalive.ClientParameters{Timeout: RPCKeepalive}))
if err != nil {
t.Fatalf("failed to grpc.Dial(%s): %s", posixServerAddress, err)
}
posixServer := NewPosixClient(conn)
posixServer := NewPOSIXClient(conn)
return DUT{
t: t,
conn: conn,
@@ -149,12 +139,12 @@ func (dut *DUT) CreateBoundSocket(typ, proto int32, addr net.IP) (int32, uint16)
// CreateListener makes a new TCP connection. If it fails, the test ends.
func (dut *DUT) CreateListener(typ, proto, backlog int32) (int32, uint16) {
fd, remotePort := dut.CreateBoundSocket(typ, proto, net.ParseIP(*remoteIPv4))
fd, remotePort := dut.CreateBoundSocket(typ, proto, net.ParseIP(RemoteIPv4))
dut.Listen(fd, backlog)
return fd, remotePort
}
// All the functions that make gRPC calls to the Posix service are below, sorted
// All the functions that make gRPC calls to the POSIX service are below, sorted
// alphabetically.
// Accept calls accept on the DUT and causes a fatal test failure if it doesn't
@@ -162,7 +152,7 @@ func (dut *DUT) CreateListener(typ, proto, backlog int32) (int32, uint16) {
// AcceptWithErrno.
func (dut *DUT) Accept(sockfd int32) (int32, unix.Sockaddr) {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
fd, sa, err := dut.AcceptWithErrno(ctx, sockfd)
if fd < 0 {
@@ -189,7 +179,7 @@ func (dut *DUT) AcceptWithErrno(ctx context.Context, sockfd int32) (int32, unix.
// needed, use BindWithErrno.
func (dut *DUT) Bind(fd int32, sa unix.Sockaddr) {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, err := dut.BindWithErrno(ctx, fd, sa)
if ret != 0 {
@@ -216,7 +206,7 @@ func (dut *DUT) BindWithErrno(ctx context.Context, fd int32, sa unix.Sockaddr) (
// CloseWithErrno.
func (dut *DUT) Close(fd int32) {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, err := dut.CloseWithErrno(ctx, fd)
if ret != 0 {
@@ -242,7 +232,7 @@ func (dut *DUT) CloseWithErrno(ctx context.Context, fd int32) (int32, error) {
// needed, use ConnectWithErrno.
func (dut *DUT) Connect(fd int32, sa unix.Sockaddr) {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, err := dut.ConnectWithErrno(ctx, fd, sa)
if ret != 0 {
@@ -269,7 +259,7 @@ func (dut *DUT) ConnectWithErrno(ctx context.Context, fd int32, sa unix.Sockaddr
// needed, use GetSockNameWithErrno.
func (dut *DUT) GetSockName(sockfd int32) unix.Sockaddr {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, sa, err := dut.GetSockNameWithErrno(ctx, sockfd)
if ret != 0 {
@@ -318,7 +308,7 @@ func (dut *DUT) getSockOpt(ctx context.Context, sockfd, level, optname, optlen i
// more specific GetSockOptXxx function.
func (dut *DUT) GetSockOpt(sockfd, level, optname, optlen int32) []byte {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, optval, err := dut.GetSockOptWithErrno(ctx, sockfd, level, optname, optlen)
if ret != 0 {
@@ -345,7 +335,7 @@ func (dut *DUT) GetSockOptWithErrno(ctx context.Context, sockfd, level, optname,
// is needed, use GetSockOptIntWithErrno.
func (dut *DUT) GetSockOptInt(sockfd, level, optname int32) int32 {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, intval, err := dut.GetSockOptIntWithErrno(ctx, sockfd, level, optname)
if ret != 0 {
@@ -370,7 +360,7 @@ func (dut *DUT) GetSockOptIntWithErrno(ctx context.Context, sockfd, level, optna
// needed, use GetSockOptTimevalWithErrno.
func (dut *DUT) GetSockOptTimeval(sockfd, level, optname int32) unix.Timeval {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, timeval, err := dut.GetSockOptTimevalWithErrno(ctx, sockfd, level, optname)
if ret != 0 {
@@ -399,7 +389,7 @@ func (dut *DUT) GetSockOptTimevalWithErrno(ctx context.Context, sockfd, level, o
// ListenWithErrno.
func (dut *DUT) Listen(sockfd, backlog int32) {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, err := dut.ListenWithErrno(ctx, sockfd, backlog)
if ret != 0 {
@@ -426,7 +416,7 @@ func (dut *DUT) ListenWithErrno(ctx context.Context, sockfd, backlog int32) (int
// SendWithErrno.
func (dut *DUT) Send(sockfd int32, buf []byte, flags int32) int32 {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, err := dut.SendWithErrno(ctx, sockfd, buf, flags)
if ret == -1 {
@@ -455,7 +445,7 @@ func (dut *DUT) SendWithErrno(ctx context.Context, sockfd int32, buf []byte, fla
// SendToWithErrno.
func (dut *DUT) SendTo(sockfd int32, buf []byte, flags int32, destAddr unix.Sockaddr) int32 {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, err := dut.SendToWithErrno(ctx, sockfd, buf, flags, destAddr)
if ret == -1 {
@@ -502,7 +492,7 @@ func (dut *DUT) setSockOpt(ctx context.Context, sockfd, level, optname int32, op
// more specific SetSockOptXxx function.
func (dut *DUT) SetSockOpt(sockfd, level, optname int32, optval []byte) {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, err := dut.SetSockOptWithErrno(ctx, sockfd, level, optname, optval)
if ret != 0 {
@@ -523,7 +513,7 @@ func (dut *DUT) SetSockOptWithErrno(ctx context.Context, sockfd, level, optname
// is needed, use SetSockOptIntWithErrno.
func (dut *DUT) SetSockOptInt(sockfd, level, optname, optval int32) {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, err := dut.SetSockOptIntWithErrno(ctx, sockfd, level, optname, optval)
if ret != 0 {
@@ -542,7 +532,7 @@ func (dut *DUT) SetSockOptIntWithErrno(ctx context.Context, sockfd, level, optna
// needed, use SetSockOptTimevalWithErrno.
func (dut *DUT) SetSockOptTimeval(sockfd, level, optname int32, tv *unix.Timeval) {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, err := dut.SetSockOptTimevalWithErrno(ctx, sockfd, level, optname, tv)
if ret != 0 {
@@ -593,7 +583,7 @@ func (dut *DUT) SocketWithErrno(domain, typ, proto int32) (int32, error) {
// RecvWithErrno.
func (dut *DUT) Recv(sockfd, len, flags int32) []byte {
dut.t.Helper()
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
ctx, cancel := context.WithTimeout(context.Background(), RPCTimeout)
defer cancel()
ret, buf, err := dut.RecvWithErrno(ctx, sockfd, len, flags)
if ret == -1 {
+3 -3
View File
@@ -20,9 +20,9 @@ import (
)
// PosixClient is a gRPC client for the Posix service.
type PosixClient pb.PosixClient
type POSIXClient pb.PosixClient
// NewPosixClient makes a new gRPC client for the Posix service.
func NewPosixClient(c grpc.ClientConnInterface) PosixClient {
// NewPOSIXClient makes a new gRPC client for the POSIX service.
func NewPOSIXClient(c grpc.ClientConnInterface) POSIXClient {
return pb.NewPosixClient(c)
}
+1 -3
View File
@@ -27,8 +27,6 @@ import (
"gvisor.dev/gvisor/pkg/usermem"
)
var device = flag.String("device", "", "local device for test packets")
// Sniffer can sniff raw packets on the wire.
type Sniffer struct {
t *testing.T
@@ -139,7 +137,7 @@ type Injector struct {
// NewInjector creates a new injector on *device.
func NewInjector(t *testing.T) (Injector, error) {
flag.Parse()
ifInfo, err := net.InterfaceByName(*device)
ifInfo, err := net.InterfaceByName(Device)
if err != nil {
return Injector{}, err
}
+63
View File
@@ -0,0 +1,63 @@
// 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 testbench
import (
"flag"
"time"
)
var (
// Device is the local device on the test network.
Device = ""
// LocalIPv4 is the local IPv4 address on the test network.
LocalIPv4 = ""
// LocalIPv6 is the local IPv6 address on the test network.
LocalIPv6 = ""
// LocalMAC is the local MAC address on the test network.
LocalMAC = ""
// POSIXServerIP is the POSIX server's IP address on the control network.
POSIXServerIP = ""
// POSIXServerPort is the UDP port the POSIX server is bound to on the
// control network.
POSIXServerPort = 40000
// RemoteIPv4 is the DUT's IPv4 address on the test network.
RemoteIPv4 = ""
// RemoteIPv6 is the DUT's IPv6 address on the test network.
RemoteIPv6 = ""
// RemoteMAC is the DUT's MAC address on the test network.
RemoteMAC = ""
// RPCKeepalive is the gRPC keepalive.
RPCKeepalive = 10 * time.Second
// RPCTimeout is the gRPC timeout.
RPCTimeout = 100 * time.Millisecond
)
// RegisterFlags defines flags and associates them with the package-level
// exported variables above. It should be called by tests in their init
// functions.
func RegisterFlags(fs *flag.FlagSet) {
fs.StringVar(&POSIXServerIP, "posix_server_ip", POSIXServerIP, "ip address to listen to for UDP commands")
fs.IntVar(&POSIXServerPort, "posix_server_port", POSIXServerPort, "port to listen to for UDP commands")
fs.DurationVar(&RPCTimeout, "rpc_timeout", RPCTimeout, "gRPC timeout")
fs.DurationVar(&RPCKeepalive, "rpc_keepalive", RPCKeepalive, "gRPC keepalive")
fs.StringVar(&LocalIPv4, "local_ipv4", LocalIPv4, "local IPv4 address for test packets")
fs.StringVar(&RemoteIPv4, "remote_ipv4", RemoteIPv4, "remote IPv4 address for test packets")
fs.StringVar(&LocalIPv6, "local_ipv6", LocalIPv6, "local IPv6 address for test packets")
fs.StringVar(&RemoteIPv6, "remote_ipv6", RemoteIPv6, "remote IPv6 address for test packets")
fs.StringVar(&LocalMAC, "local_mac", LocalMAC, "local mac address for test packets")
fs.StringVar(&RemoteMAC, "remote_mac", RemoteMAC, "remote mac address for test packets")
fs.StringVar(&Device, "device", Device, "local device for test packets")
}
@@ -15,6 +15,7 @@
package fin_wait2_timeout_test
import (
"flag"
"testing"
"time"
@@ -23,6 +24,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
func TestFinWait2Timeout(t *testing.T) {
for _, tt := range []struct {
description string
@@ -16,6 +16,7 @@ package icmpv6_param_problem_test
import (
"encoding/binary"
"flag"
"testing"
"time"
@@ -23,6 +24,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
// TestICMPv6ParamProblemTest sends a packet with a bad next header. The DUT
// should respond with an ICMPv6 Parameter Problem message.
func TestICMPv6ParamProblemTest(t *testing.T) {
@@ -15,6 +15,7 @@
package tcp_close_wait_ack_test
import (
"flag"
"fmt"
"testing"
"time"
@@ -25,6 +26,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
func TestCloseWaitAck(t *testing.T) {
for _, tt := range []struct {
description string
@@ -15,6 +15,7 @@
package tcp_noaccept_close_rst_test
import (
"flag"
"testing"
"time"
@@ -23,6 +24,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
func TestTcpNoAcceptCloseReset(t *testing.T) {
dut := tb.NewDUT(t)
defer dut.TearDown()
@@ -15,6 +15,7 @@
package tcp_outside_the_window_test
import (
"flag"
"fmt"
"testing"
"time"
@@ -25,6 +26,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
// TestTCPOutsideTheWindows tests the behavior of the DUT when packets arrive
// that are inside or outside the TCP window. Packets that are outside the
// window should force an extra ACK, as described in RFC793 page 69:
@@ -15,6 +15,7 @@
package tcp_should_piggyback_test
import (
"flag"
"testing"
"time"
@@ -23,6 +24,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
func TestPiggyback(t *testing.T) {
dut := tb.NewDUT(t)
defer dut.TearDown()
@@ -15,6 +15,7 @@
package tcp_user_timeout_test
import (
"flag"
"fmt"
"testing"
"time"
@@ -24,6 +25,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
func sendPayload(conn *tb.TCPIPv4, dut *tb.DUT, fd int32) error {
sampleData := make([]byte, 100)
for i := range sampleData {
@@ -15,6 +15,7 @@
package tcp_window_shrink_test
import (
"flag"
"testing"
"time"
@@ -23,6 +24,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
func TestWindowShrink(t *testing.T) {
dut := tb.NewDUT(t)
defer dut.TearDown()
@@ -15,6 +15,7 @@
package tcp_zero_window_probe_retransmit_test
import (
"flag"
"testing"
"time"
@@ -23,6 +24,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
// TestZeroWindowProbeRetransmit tests retransmits of zero window probes
// to be sent at exponentially inreasing time intervals.
func TestZeroWindowProbeRetransmit(t *testing.T) {
@@ -15,6 +15,7 @@
package tcp_zero_window_probe_test
import (
"flag"
"testing"
"time"
@@ -23,6 +24,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
// TestZeroWindowProbe tests few cases of zero window probing over the
// same connection.
func TestZeroWindowProbe(t *testing.T) {
@@ -15,6 +15,7 @@
package tcp_zero_window_probe_usertimeout_test
import (
"flag"
"testing"
"time"
@@ -23,6 +24,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
// TestZeroWindowProbeUserTimeout sanity tests user timeout when we are
// retransmitting zero window probes.
func TestZeroWindowProbeUserTimeout(t *testing.T) {
@@ -16,6 +16,7 @@ package udp_icmp_error_propagation_test
import (
"context"
"flag"
"fmt"
"net"
"sync"
@@ -28,6 +29,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
type connectionMode bool
func (c connectionMode) String() string {
@@ -15,6 +15,7 @@
package udp_recv_multicast_test
import (
"flag"
"net"
"testing"
@@ -23,6 +24,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
func TestUDPRecvMulticast(t *testing.T) {
dut := tb.NewDUT(t)
defer dut.TearDown()
@@ -15,6 +15,7 @@
package udp_send_recv_dgram_test
import (
"flag"
"math/rand"
"net"
"testing"
@@ -24,6 +25,10 @@ import (
tb "gvisor.dev/gvisor/test/packetimpact/testbench"
)
func init() {
tb.RegisterFlags(flag.CommandLine)
}
func generateRandomPayload(t *testing.T, n int) string {
t.Helper()
buf := make([]byte, n)