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// Copyright 2018 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 (
"bytes"
"runtime"
"testing"
"time"
)
func TestRawConnReadWrite(t *testing.T) {
switch runtime.GOOS {
case "plan9", "js", "wasip1":
t.Skipf("not supported on %s", runtime.GOOS)
}
t.Run("TCP", func(t *testing.T) {
handler := func(ls *localServer, ln Listener) {
c, err := ln.Accept()
if err != nil {
t.Error(err)
return
}
defer c.Close()
cc, err := ln.(*TCPListener).SyscallConn()
if err != nil {
t.Fatal(err)
}
called := false
op := func(uintptr) bool {
called = true
return true
}
err = cc.Write(op)
if err == nil {
t.Error("Write should return an error")
}
if called {
t.Error("Write shouldn't call op")
}
called = false
err = cc.Read(op)
if err == nil {
t.Error("Read should return an error")
}
if called {
t.Error("Read shouldn't call op")
}
var b [32]byte
n, err := c.Read(b[:])
if err != nil {
t.Error(err)
return
}
if _, err := c.Write(b[:n]); err != nil {
t.Error(err)
return
}
}
ls := newLocalServer(t, "tcp")
defer ls.teardown()
if err := ls.buildup(handler); err != nil {
t.Fatal(err)
}
c, err := Dial(ls.Listener.Addr().Network(), ls.Listener.Addr().String())
if err != nil {
t.Fatal(err)
}
defer c.Close()
cc, err := c.(*TCPConn).SyscallConn()
if err != nil {
t.Fatal(err)
}
data := []byte("HELLO-R-U-THERE")
if err := writeRawConn(cc, data); err != nil {
t.Fatal(err)
}
var b [32]byte
n, err := readRawConn(cc, b[:])
if err != nil {
t.Fatal(err)
}
if bytes.Compare(b[:n], data) != 0 {
t.Fatalf("got %q; want %q", b[:n], data)
}
})
t.Run("Deadline", func(t *testing.T) {
switch runtime.GOOS {
case "windows":
t.Skipf("not supported on %s", runtime.GOOS)
}
ln := newLocalListener(t, "tcp")
defer ln.Close()
c, err := Dial(ln.Addr().Network(), ln.Addr().String())
if err != nil {
t.Fatal(err)
}
defer c.Close()
cc, err := c.(*TCPConn).SyscallConn()
if err != nil {
t.Fatal(err)
}
var b [1]byte
c.SetDeadline(noDeadline)
if err := c.SetDeadline(time.Now().Add(-1)); err != nil {
t.Fatal(err)
}
if err = writeRawConn(cc, b[:]); err == nil {
t.Fatal("Write should fail")
}
if perr := parseWriteError(err); perr != nil {
t.Error(perr)
}
if !isDeadlineExceeded(err) {
t.Errorf("got %v; want timeout", err)
}
if _, err = readRawConn(cc, b[:]); err == nil {
t.Fatal("Read should fail")
}
if perr := parseReadError(err); perr != nil {
t.Error(perr)
}
if !isDeadlineExceeded(err) {
t.Errorf("got %v; want timeout", err)
}
c.SetReadDeadline(noDeadline)
if err := c.SetReadDeadline(time.Now().Add(-1)); err != nil {
t.Fatal(err)
}
if _, err = readRawConn(cc, b[:]); err == nil {
t.Fatal("Read should fail")
}
if perr := parseReadError(err); perr != nil {
t.Error(perr)
}
if !isDeadlineExceeded(err) {
t.Errorf("got %v; want timeout", err)
}
c.SetWriteDeadline(noDeadline)
if err := c.SetWriteDeadline(time.Now().Add(-1)); err != nil {
t.Fatal(err)
}
if err = writeRawConn(cc, b[:]); err == nil {
t.Fatal("Write should fail")
}
if perr := parseWriteError(err); perr != nil {
t.Error(perr)
}
if !isDeadlineExceeded(err) {
t.Errorf("got %v; want timeout", err)
}
})
}
func TestRawConnControl(t *testing.T) {
switch runtime.GOOS {
case "plan9", "js", "wasip1":
t.Skipf("not supported on %s", runtime.GOOS)
}
t.Run("TCP", func(t *testing.T) {
ln := newLocalListener(t, "tcp")
defer ln.Close()
cc1, err := ln.(*TCPListener).SyscallConn()
if err != nil {
t.Fatal(err)
}
if err := controlRawConn(cc1, ln.Addr()); err != nil {
t.Fatal(err)
}
c, err := Dial(ln.Addr().Network(), ln.Addr().String())
if err != nil {
t.Fatal(err)
}
defer c.Close()
cc2, err := c.(*TCPConn).SyscallConn()
if err != nil {
t.Fatal(err)
}
if err := controlRawConn(cc2, c.LocalAddr()); err != nil {
t.Fatal(err)
}
ln.Close()
if err := controlRawConn(cc1, ln.Addr()); err == nil {
t.Fatal("Control after Close should fail")
}
c.Close()
if err := controlRawConn(cc2, c.LocalAddr()); err == nil {
t.Fatal("Control after Close should fail")
}
})
}
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