func TestReadBuffer(t *testing.T) {
switch runtime.GOOS {
case "darwin", "dragonfly", "freebsd", "linux", "netbsd", "openbsd":
default:
t.Skipf("%s/%s", runtime.GOOS, runtime.GOARCH)
}
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
m := []byte("HELLO-R-U-THERE")
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
if err := ln.(*net.TCPListener).SetDeadline(time.Now().Add(200 * time.Millisecond)); err != nil {
t.Error(err)
return
}
c, err := ln.Accept()
if err != nil {
t.Error(err)
return
}
defer c.Close()
if err := c.(*net.TCPConn).SetReadBuffer(65535); err != nil {
t.Error(err)
return
}
tc, err := tcp.NewConn(c)
if err != nil {
t.Error(err)
return
}
time.Sleep(100 * time.Millisecond)
n := tc.ReadBufferLen()
if n != len(m) {
t.Errorf("got %v; want %v", n, len(m))
return
}
t.Logf("%v bytes buffered to be read", n)
}()
c, err := net.Dial(ln.Addr().Network(), ln.Addr().String())
if err != nil {
t.Fatal(err)
}
defer c.Close()
if _, err := c.Write(m); err != nil {
t.Fatal(err)
}
wg.Wait()
}
func TestWriteBuffer(t *testing.T) {
switch runtime.GOOS {
case "freebsd", "linux", "netbsd":
default:
t.Skipf("%s/%s", runtime.GOOS, runtime.GOARCH)
}
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
m := []byte("HELLO-R-U-THERE")
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
d := net.Dialer{Timeout: 200 * time.Millisecond}
c, err := d.Dial(ln.Addr().Network(), ln.Addr().String())
if err != nil {
t.Error(err)
return
}
defer c.Close()
if err := c.(*net.TCPConn).SetWriteBuffer(65535); err != nil {
t.Error(err)
return
}
tc, err := tcp.NewConn(c)
if err != nil {
t.Error(err)
return
}
defer tc.Close()
if _, err := c.Write(m); err != nil {
t.Error(err)
return
}
n := tc.WriteBufferSpace()
if n <= 0 {
t.Errorf("got %v; want >0", n)
return
}
t.Logf("%v bytes write available", n)
}()
c, err := ln.Accept()
if err != nil {
t.Fatal(err)
}
defer c.Close()
wg.Wait()
}
func dialWithTCPConnMonitor(network, address string) (net.Conn, error) {
d := net.Dialer{DualStack: true}
c, err := d.Dial(network, address)
if err != nil {
return nil, err
}
tc, err := tcp.NewConn(c)
if err != nil {
c.Close()
return nil, err
}
go tcpConnMonitor(tc)
return &tc.TCPConn, nil
}
func TestKeepAlive(t *testing.T) {
switch runtime.GOOS {
case "darwin", "dragonfly", "freebsd", "linux", "netbsd", "solaris", "windows":
default:
t.Skipf("%s/%s", runtime.GOOS, runtime.GOARCH)
}
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
go func() {
for {
c, err := ln.Accept()
if err != nil {
break
}
defer c.Close()
}
}()
c, err := net.Dial(ln.Addr().Network(), ln.Addr().String())
if err != nil {
t.Fatal(err)
}
defer c.Close()
tc, err := tcp.NewConn(c)
if err != nil {
t.Fatal(err)
}
defer tc.Close()
if err := tc.SetKeepAlive(true); err != nil {
t.Error(err)
}
if err := tc.SetKeepAliveIdleInterval(10 * time.Second); err != nil { // solaris requires 10 seconds as the lowest value
t.Error(err)
}
if err := tc.SetKeepAliveProbeInterval(time.Second); err != nil {
t.Error(err)
}
if err := tc.SetKeepAliveProbes(1); err != nil {
t.Error(err)
}
}
func TestCorkAndUncork(t *testing.T) {
switch runtime.GOOS {
case "freebsd", "linux":
default:
t.Skipf("not supported on %s/%s", runtime.GOOS, runtime.GOARCH)
}
const N = 1280
const M = N / 10
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
defer ln.Close()
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
if err := ln.(*net.TCPListener).SetDeadline(time.Now().Add(200 * time.Millisecond)); err != nil {
t.Error(err)
return
}
c, err := ln.Accept()
if err != nil {
t.Error(err)
return
}
defer c.Close()
b := make([]byte, N)
n, err := c.Read(b)
if err != nil {
t.Error(err)
return
}
if n != N {
t.Errorf("got %v; want %v", n, N)
return
}
}()
c, err := net.Dial(ln.Addr().Network(), ln.Addr().String())
if err != nil {
t.Fatal(err)
}
defer c.Close()
tc, err := tcp.NewConn(c)
if err != nil {
t.Fatal(err)
}
defer tc.Close()
if err := tc.Cork(); err != nil {
t.Fatal(err)
}
b := make([]byte, N)
for i := 0; i+M <= N; i += M {
if _, err := tc.Write(b[i : i+M]); err != nil {
t.Fatal(err)
}
time.Sleep(5 * time.Millisecond)
}
if err := tc.Uncork(); err != nil {
t.Fatal(err)
}
wg.Wait()
}