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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package net
import (
"flag"
"fmt"
"net/internal/socktest"
"os"
"runtime"
"sort"
"strings"
"sync"
"testing"
"time"
)
var (
sw socktest.Switch
// uninstallTestHooks runs just before a run of benchmarks.
testHookUninstaller sync.Once
)
var (
testTCPBig = flag.Bool("tcpbig", false, "whether to test massive size of data per read or write call on TCP connection")
testDNSFlood = flag.Bool("dnsflood", false, "whether to test DNS query flooding")
// If external IPv4 connectivity exists, we can try dialing
// non-node/interface local scope IPv4 addresses.
// On Windows, Lookup APIs may not return IPv4-related
// resource records when a node has no external IPv4
// connectivity.
testIPv4 = flag.Bool("ipv4", true, "assume external IPv4 connectivity exists")
// If external IPv6 connectivity exists, we can try dialing
// non-node/interface local scope IPv6 addresses.
// On Windows, Lookup APIs may not return IPv6-related
// resource records when a node has no external IPv6
// connectivity.
testIPv6 = flag.Bool("ipv6", false, "assume external IPv6 connectivity exists")
)
func TestMain(m *testing.M) {
setupTestData()
installTestHooks()
st := m.Run()
testHookUninstaller.Do(uninstallTestHooks)
if testing.Verbose() {
printRunningGoroutines()
printInflightSockets()
printSocketStats()
}
forceCloseSockets()
os.Exit(st)
}
// mustSetDeadline calls the bound method m to set a deadline on a Conn.
// If the call fails, mustSetDeadline skips t if the current GOOS is believed
// not to support deadlines, or fails the test otherwise.
func mustSetDeadline(t testing.TB, m func(time.Time) error, d time.Duration) {
err := m(time.Now().Add(d))
if err != nil {
t.Helper()
if runtime.GOOS == "plan9" {
t.Skipf("skipping: %s does not support deadlines", runtime.GOOS)
}
t.Fatal(err)
}
}
type ipv6LinkLocalUnicastTest struct {
network, address string
nameLookup bool
}
var (
ipv6LinkLocalUnicastTCPTests []ipv6LinkLocalUnicastTest
ipv6LinkLocalUnicastUDPTests []ipv6LinkLocalUnicastTest
)
func setupTestData() {
if supportsIPv4() {
resolveTCPAddrTests = append(resolveTCPAddrTests, []resolveTCPAddrTest{
{"tcp", "localhost:1", &TCPAddr{IP: IPv4(127, 0, 0, 1), Port: 1}, nil},
{"tcp4", "localhost:2", &TCPAddr{IP: IPv4(127, 0, 0, 1), Port: 2}, nil},
}...)
resolveUDPAddrTests = append(resolveUDPAddrTests, []resolveUDPAddrTest{
{"udp", "localhost:1", &UDPAddr{IP: IPv4(127, 0, 0, 1), Port: 1}, nil},
{"udp4", "localhost:2", &UDPAddr{IP: IPv4(127, 0, 0, 1), Port: 2}, nil},
}...)
resolveIPAddrTests = append(resolveIPAddrTests, []resolveIPAddrTest{
{"ip", "localhost", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
{"ip4", "localhost", &IPAddr{IP: IPv4(127, 0, 0, 1)}, nil},
}...)
}
if supportsIPv6() {
resolveTCPAddrTests = append(resolveTCPAddrTests, resolveTCPAddrTest{"tcp6", "localhost:3", &TCPAddr{IP: IPv6loopback, Port: 3}, nil})
resolveUDPAddrTests = append(resolveUDPAddrTests, resolveUDPAddrTest{"udp6", "localhost:3", &UDPAddr{IP: IPv6loopback, Port: 3}, nil})
resolveIPAddrTests = append(resolveIPAddrTests, resolveIPAddrTest{"ip6", "localhost", &IPAddr{IP: IPv6loopback}, nil})
// Issue 20911: don't return IPv4 addresses for
// Resolve*Addr calls of the IPv6 unspecified address.
resolveTCPAddrTests = append(resolveTCPAddrTests, resolveTCPAddrTest{"tcp", "[::]:4", &TCPAddr{IP: IPv6unspecified, Port: 4}, nil})
resolveUDPAddrTests = append(resolveUDPAddrTests, resolveUDPAddrTest{"udp", "[::]:4", &UDPAddr{IP: IPv6unspecified, Port: 4}, nil})
resolveIPAddrTests = append(resolveIPAddrTests, resolveIPAddrTest{"ip", "::", &IPAddr{IP: IPv6unspecified}, nil})
}
ifi := loopbackInterface()
if ifi != nil {
index := fmt.Sprintf("%v", ifi.Index)
resolveTCPAddrTests = append(resolveTCPAddrTests, []resolveTCPAddrTest{
{"tcp6", "[fe80::1%" + ifi.Name + "]:1", &TCPAddr{IP: ParseIP("fe80::1"), Port: 1, Zone: zoneCache.name(ifi.Index)}, nil},
{"tcp6", "[fe80::1%" + index + "]:2", &TCPAddr{IP: ParseIP("fe80::1"), Port: 2, Zone: index}, nil},
}...)
resolveUDPAddrTests = append(resolveUDPAddrTests, []resolveUDPAddrTest{
{"udp6", "[fe80::1%" + ifi.Name + "]:1", &UDPAddr{IP: ParseIP("fe80::1"), Port: 1, Zone: zoneCache.name(ifi.Index)}, nil},
{"udp6", "[fe80::1%" + index + "]:2", &UDPAddr{IP: ParseIP("fe80::1"), Port: 2, Zone: index}, nil},
}...)
resolveIPAddrTests = append(resolveIPAddrTests, []resolveIPAddrTest{
{"ip6", "fe80::1%" + ifi.Name, &IPAddr{IP: ParseIP("fe80::1"), Zone: zoneCache.name(ifi.Index)}, nil},
{"ip6", "fe80::1%" + index, &IPAddr{IP: ParseIP("fe80::1"), Zone: index}, nil},
}...)
}
addr := ipv6LinkLocalUnicastAddr(ifi)
if addr != "" {
if runtime.GOOS != "dragonfly" {
ipv6LinkLocalUnicastTCPTests = append(ipv6LinkLocalUnicastTCPTests, []ipv6LinkLocalUnicastTest{
{"tcp", "[" + addr + "%" + ifi.Name + "]:0", false},
}...)
ipv6LinkLocalUnicastUDPTests = append(ipv6LinkLocalUnicastUDPTests, []ipv6LinkLocalUnicastTest{
{"udp", "[" + addr + "%" + ifi.Name + "]:0", false},
}...)
}
ipv6LinkLocalUnicastTCPTests = append(ipv6LinkLocalUnicastTCPTests, []ipv6LinkLocalUnicastTest{
{"tcp6", "[" + addr + "%" + ifi.Name + "]:0", false},
}...)
ipv6LinkLocalUnicastUDPTests = append(ipv6LinkLocalUnicastUDPTests, []ipv6LinkLocalUnicastTest{
{"udp6", "[" + addr + "%" + ifi.Name + "]:0", false},
}...)
switch runtime.GOOS {
case "darwin", "ios", "dragonfly", "freebsd", "openbsd", "netbsd":
ipv6LinkLocalUnicastTCPTests = append(ipv6LinkLocalUnicastTCPTests, []ipv6LinkLocalUnicastTest{
{"tcp", "[localhost%" + ifi.Name + "]:0", true},
{"tcp6", "[localhost%" + ifi.Name + "]:0", true},
}...)
ipv6LinkLocalUnicastUDPTests = append(ipv6LinkLocalUnicastUDPTests, []ipv6LinkLocalUnicastTest{
{"udp", "[localhost%" + ifi.Name + "]:0", true},
{"udp6", "[localhost%" + ifi.Name + "]:0", true},
}...)
case "linux":
ipv6LinkLocalUnicastTCPTests = append(ipv6LinkLocalUnicastTCPTests, []ipv6LinkLocalUnicastTest{
{"tcp", "[ip6-localhost%" + ifi.Name + "]:0", true},
{"tcp6", "[ip6-localhost%" + ifi.Name + "]:0", true},
}...)
ipv6LinkLocalUnicastUDPTests = append(ipv6LinkLocalUnicastUDPTests, []ipv6LinkLocalUnicastTest{
{"udp", "[ip6-localhost%" + ifi.Name + "]:0", true},
{"udp6", "[ip6-localhost%" + ifi.Name + "]:0", true},
}...)
}
}
}
func printRunningGoroutines() {
gss := runningGoroutines()
if len(gss) == 0 {
return
}
fmt.Fprintf(os.Stderr, "Running goroutines:\n")
for _, gs := range gss {
fmt.Fprintf(os.Stderr, "%v\n", gs)
}
fmt.Fprintf(os.Stderr, "\n")
}
// runningGoroutines returns a list of remaining goroutines.
func runningGoroutines() []string {
var gss []string
b := make([]byte, 2<<20)
b = b[:runtime.Stack(b, true)]
for _, s := range strings.Split(string(b), "\n\n") {
_, stack, _ := strings.Cut(s, "\n")
stack = strings.TrimSpace(stack)
if !strings.Contains(stack, "created by net") {
continue
}
gss = append(gss, stack)
}
sort.Strings(gss)
return gss
}
func printInflightSockets() {
sos := sw.Sockets()
if len(sos) == 0 {
return
}
fmt.Fprintf(os.Stderr, "Inflight sockets:\n")
for s, so := range sos {
fmt.Fprintf(os.Stderr, "%v: %v\n", s, so)
}
fmt.Fprintf(os.Stderr, "\n")
}
func printSocketStats() {
sts := sw.Stats()
if len(sts) == 0 {
return
}
fmt.Fprintf(os.Stderr, "Socket statistical information:\n")
for _, st := range sts {
fmt.Fprintf(os.Stderr, "%v\n", st)
}
fmt.Fprintf(os.Stderr, "\n")
}
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