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// Copyright 2009 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 (
"io"
"io/ioutil"
"os"
"runtime"
"testing"
"time"
)
func TestShutdown(t *testing.T) {
if runtime.GOOS == "plan9" {
t.Skipf("skipping test on %q", runtime.GOOS)
}
ln, err := Listen("tcp", "127.0.0.1:0")
if err != nil {
if ln, err = Listen("tcp6", "[::1]:0"); err != nil {
t.Fatalf("ListenTCP on :0: %v", err)
}
}
go func() {
defer ln.Close()
c, err := ln.Accept()
if err != nil {
t.Fatalf("Accept: %v", err)
}
var buf [10]byte
n, err := c.Read(buf[:])
if n != 0 || err != io.EOF {
t.Fatalf("server Read = %d, %v; want 0, io.EOF", n, err)
}
c.Write([]byte("response"))
c.Close()
}()
c, err := Dial("tcp", ln.Addr().String())
if err != nil {
t.Fatalf("Dial: %v", err)
}
defer c.Close()
err = c.(*TCPConn).CloseWrite()
if err != nil {
t.Fatalf("CloseWrite: %v", err)
}
var buf [10]byte
n, err := c.Read(buf[:])
if err != nil {
t.Fatalf("client Read: %d, %v", n, err)
}
got := string(buf[:n])
if got != "response" {
t.Errorf("read = %q, want \"response\"", got)
}
}
func TestShutdownUnix(t *testing.T) {
switch runtime.GOOS {
case "windows", "plan9":
t.Skipf("skipping test on %q", runtime.GOOS)
}
f, err := ioutil.TempFile("", "go_net_unixtest")
if err != nil {
t.Fatalf("TempFile: %s", err)
}
f.Close()
tmpname := f.Name()
os.Remove(tmpname)
ln, err := Listen("unix", tmpname)
if err != nil {
t.Fatalf("ListenUnix on %s: %s", tmpname, err)
}
defer func() {
ln.Close()
os.Remove(tmpname)
}()
go func() {
c, err := ln.Accept()
if err != nil {
t.Fatalf("Accept: %v", err)
}
var buf [10]byte
n, err := c.Read(buf[:])
if n != 0 || err != io.EOF {
t.Fatalf("server Read = %d, %v; want 0, io.EOF", n, err)
}
c.Write([]byte("response"))
c.Close()
}()
c, err := Dial("unix", tmpname)
if err != nil {
t.Fatalf("Dial: %v", err)
}
defer c.Close()
err = c.(*UnixConn).CloseWrite()
if err != nil {
t.Fatalf("CloseWrite: %v", err)
}
var buf [10]byte
n, err := c.Read(buf[:])
if err != nil {
t.Fatalf("client Read: %d, %v", n, err)
}
got := string(buf[:n])
if got != "response" {
t.Errorf("read = %q, want \"response\"", got)
}
}
func TestTCPListenClose(t *testing.T) {
ln, err := Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatalf("Listen failed: %v", err)
}
done := make(chan bool, 1)
go func() {
time.Sleep(100 * time.Millisecond)
ln.Close()
}()
go func() {
c, err := ln.Accept()
if err == nil {
c.Close()
t.Error("Accept succeeded")
} else {
t.Logf("Accept timeout error: %s (any error is fine)", err)
}
done <- true
}()
select {
case <-done:
case <-time.After(2 * time.Second):
t.Fatal("timeout waiting for TCP close")
}
}
func TestUDPListenClose(t *testing.T) {
switch runtime.GOOS {
case "plan9":
t.Skipf("skipping test on %q", runtime.GOOS)
}
ln, err := ListenPacket("udp", "127.0.0.1:0")
if err != nil {
t.Fatalf("Listen failed: %v", err)
}
buf := make([]byte, 1000)
done := make(chan bool, 1)
go func() {
time.Sleep(100 * time.Millisecond)
ln.Close()
}()
go func() {
_, _, err = ln.ReadFrom(buf)
if err == nil {
t.Error("ReadFrom succeeded")
} else {
t.Logf("ReadFrom timeout error: %s (any error is fine)", err)
}
done <- true
}()
select {
case <-done:
case <-time.After(2 * time.Second):
t.Fatal("timeout waiting for UDP close")
}
}
func TestTCPClose(t *testing.T) {
switch runtime.GOOS {
case "plan9":
t.Skipf("skipping test on %q", runtime.GOOS)
}
l, err := Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer l.Close()
read := func(r io.Reader) error {
var m [1]byte
_, err := r.Read(m[:])
return err
}
go func() {
c, err := Dial("tcp", l.Addr().String())
if err != nil {
t.Fatal(err)
}
go read(c)
time.Sleep(10 * time.Millisecond)
c.Close()
}()
c, err := l.Accept()
if err != nil {
t.Fatal(err)
}
defer c.Close()
for err == nil {
err = read(c)
}
if err != nil && err != io.EOF {
t.Fatal(err)
}
}
func TestErrorNil(t *testing.T) {
c, err := Dial("tcp", "127.0.0.1:65535")
if err == nil {
t.Fatal("Dial 127.0.0.1:65535 succeeded")
}
if c != nil {
t.Fatalf("Dial returned non-nil interface %T(%v) with err != nil", c, c)
}
// Make Listen fail by relistening on the same address.
l, err := Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal("Listen 127.0.0.1:0: %v", err)
}
defer l.Close()
l1, err := Listen("tcp", l.Addr().String())
if err == nil {
t.Fatal("second Listen %v: %v", l.Addr(), err)
}
if l1 != nil {
t.Fatalf("Listen returned non-nil interface %T(%v) with err != nil", l1, l1)
}
// Make ListenPacket fail by relistening on the same address.
lp, err := ListenPacket("udp", "127.0.0.1:0")
if err != nil {
t.Fatal("Listen 127.0.0.1:0: %v", err)
}
defer lp.Close()
lp1, err := ListenPacket("udp", lp.LocalAddr().String())
if err == nil {
t.Fatal("second Listen %v: %v", lp.LocalAddr(), err)
}
if lp1 != nil {
t.Fatalf("ListenPacket returned non-nil interface %T(%v) with err != nil", lp1, lp1)
}
}
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