// license that can be found in the LICENSE file.

// Test use of raw connections.
//
//go:build !plan9 && !js && !wasip1

package os_test

import (
	"os"
	"syscall"
	"testing"
)

func TestRawConnReadWrite(t *testing.T) {
	t.Parallel()

	r, w, err := os.Pipe()
	if err != nil {
		t.Fatal(err)
	}
	defer r.Close()
	defer w.Close()

	rconn, err := r.SyscallConn()
	if err != nil {
		t.Fatal(err)

// 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) {

	"io"
	. "os"
	"path/filepath"
	"runtime"
	"strings"
	"syscall"
	"testing"
	"time"
)

func init() {
	isReadonlyError = func(err error) bool { return err == syscall.EROFS }
}

// For TestRawConnReadWrite.
type syscallDescriptor = int

func checkUidGid(t *testing.T, path string, uid, gid int) {
	dir, err := Lstat(path)
	if err != nil {
		t.Fatalf("Lstat %q (looking for uid/gid %d/%d): %s", path, uid, gid, err)

	"runtime"
	"slices"
	"strings"
	"syscall"
	"testing"
	"unicode/utf16"
	"unsafe"
)

var winsymlink = godebug.New("winsymlink")
var winreadlinkvolume = godebug.New("winreadlinkvolume")

// For TestRawConnReadWrite.
type syscallDescriptor = syscall.Handle

// chdir changes the current working directory to the named directory,
// and then restore the original working directory at the end of the test.