/
stress_test.go
196 lines (165 loc) · 3.96 KB
/
stress_test.go
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package vnet
import (
"fmt"
"net"
"sync"
"testing"
"time"
"github.com/pion/logging"
"github.com/pion/transport/test"
"github.com/stretchr/testify/assert"
)
func TestStressTestUDP(t *testing.T) {
loggerFactory := logging.NewDefaultLoggerFactory()
log := loggerFactory.NewLogger("test")
t.Run("lan to wan", func(t *testing.T) {
tt := test.TimeOut(30 * time.Second)
defer tt.Stop()
// WAN with a nic (net0)
wan, err := NewRouter(&RouterConfig{
CIDR: "1.2.3.0/24",
QueueSize: 1000,
LoggerFactory: loggerFactory,
})
assert.NoError(t, err, "should succeed")
net0, err := NewNet(&NetConfig{
StaticIPs: []string{demoIP},
})
if !assert.NoError(t, err, "should succeed") {
return
}
err = wan.AddNet(net0)
assert.NoError(t, err, "should succeed")
// LAN with a nic (net1)
lan, err := NewRouter(&RouterConfig{
CIDR: "192.168.0.0/24",
QueueSize: 1000,
LoggerFactory: loggerFactory,
})
assert.NoError(t, err, "should succeed")
net1, err := NewNet(&NetConfig{})
if !assert.NoError(t, err, "should succeed") {
return
}
err = lan.AddNet(net1)
assert.NoError(t, err, "should succeed")
err = wan.AddRouter(lan)
assert.NoError(t, err, "should succeed")
err = wan.Start()
assert.NoError(t, err, "should succeed")
defer func() {
err = wan.Stop()
assert.NoError(t, err, "should succeed")
}()
// Find IP address for net0
ifs, err := net0.Interfaces()
if !assert.NoError(t, err, "should succeed") {
return
}
log.Debugf("num ifs: %d", len(ifs))
var echoServerIP net.IP
loop:
for _, ifc := range ifs {
log.Debugf("flags: %v", ifc.Flags)
if ifc.Flags&net.FlagUp == 0 {
continue
}
if ifc.Flags&net.FlagLoopback != 0 {
continue
}
addrs, err2 := ifc.Addresses()
if !assert.NoError(t, err2, "should succeed") {
return
}
log.Debugf("num addrs: %d", len(addrs))
for _, addr := range addrs {
log.Debugf("addr: %s", addr.String())
switch addr := addr.(type) {
case *net.IPNet:
echoServerIP = addr.IP
break loop
case *net.IPAddr:
echoServerIP = addr.IP
break loop
}
}
}
if !assert.NotNil(t, echoServerIP, "should have IP address") {
return
}
log.Debugf("echo server IP: %s", echoServerIP.String())
// Set up an echo server on WAN
conn0, err := net0.ListenPacket(
"udp4", fmt.Sprintf("%s:0", echoServerIP))
if !assert.NoError(t, err, "should succeed") {
return
}
doneCh0 := make(chan struct{})
go func() {
buf := make([]byte, 1500)
for {
n, from, err2 := conn0.ReadFrom(buf)
if err2 != nil {
break
}
// echo back
_, err2 = conn0.WriteTo(buf[:n], from)
if err2 != nil {
break
}
}
close(doneCh0)
}()
var wg sync.WaitGroup
runEchoTest := func() {
// Set up a client
var numRecvd int
const numToSend int = 400
const pktSize int = 1200
conn1, err2 := net0.ListenPacket("udp4", "0.0.0.0:0")
if !assert.NoError(t, err2, "should succeed") {
return
}
doneCh1 := make(chan struct{})
go func() {
buf := make([]byte, 1500)
for {
n, _, err3 := conn1.ReadFrom(buf)
if err3 != nil {
break
}
if n != pktSize {
break
}
numRecvd++
}
close(doneCh1)
}()
buf := make([]byte, pktSize)
to := conn0.LocalAddr()
for i := 0; i < numToSend; i++ {
_, err3 := conn1.WriteTo(buf, to)
assert.NoError(t, err3, "should succeed")
time.Sleep(10 * time.Millisecond)
}
time.Sleep(time.Second)
err2 = conn1.Close()
assert.NoError(t, err2, "should succeed")
<-doneCh1
// allow some packet loss
assert.True(t, numRecvd >= numToSend*8/10, "majority should received")
if numRecvd < numToSend {
log.Infof("lost %d packets", numToSend-numRecvd)
}
wg.Done()
}
// Run echo tests concurrently
for i := 0; i < 20; i++ {
wg.Add(1)
go runEchoTest()
}
wg.Wait()
err = conn0.Close()
assert.NoError(t, err, "should succeed")
})
}