82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package net
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import (
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"runtime"
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"syscall"
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)
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// BUG(tmm1): On Windows, the Write method of syscall.RawConn
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// does not integrate with the runtime's network poller. It cannot
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// wait for the connection to become writeable, and does not respect
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// deadlines. If the user-provided callback returns false, the Write
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// method will fail immediately.
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// BUG(mikio): On JS and Plan 9, the Control, Read and Write
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// methods of syscall.RawConn are not implemented.
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type rawConn struct {
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fd *netFD
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}
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func (c *rawConn) ok() bool { return c != nil && c.fd != nil }
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func (c *rawConn) Control(f func(uintptr)) error {
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if !c.ok() {
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return syscall.EINVAL
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}
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err := c.fd.pfd.RawControl(f)
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runtime.KeepAlive(c.fd)
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if err != nil {
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err = &OpError{Op: "raw-control", Net: c.fd.net, Source: nil, Addr: c.fd.laddr, Err: err}
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}
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return err
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}
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func (c *rawConn) Read(f func(uintptr) bool) error {
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if !c.ok() {
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return syscall.EINVAL
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}
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err := c.fd.pfd.RawRead(f)
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runtime.KeepAlive(c.fd)
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if err != nil {
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err = &OpError{Op: "raw-read", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err}
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}
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return err
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}
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func (c *rawConn) Write(f func(uintptr) bool) error {
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if !c.ok() {
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return syscall.EINVAL
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}
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err := c.fd.pfd.RawWrite(f)
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runtime.KeepAlive(c.fd)
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if err != nil {
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err = &OpError{Op: "raw-write", Net: c.fd.net, Source: c.fd.laddr, Addr: c.fd.raddr, Err: err}
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}
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return err
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}
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func newRawConn(fd *netFD) (*rawConn, error) {
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return &rawConn{fd: fd}, nil
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}
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type rawListener struct {
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rawConn
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}
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func (l *rawListener) Read(func(uintptr) bool) error {
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return syscall.EINVAL
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}
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func (l *rawListener) Write(func(uintptr) bool) error {
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return syscall.EINVAL
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}
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func newRawListener(fd *netFD) (*rawListener, error) {
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return &rawListener{rawConn{fd: fd}}, nil
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}
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