98 lines
2.4 KiB
Go
98 lines
2.4 KiB
Go
// Copyright 2009 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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// TCP for Plan 9
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package net
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import (
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"syscall"
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"time"
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)
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// TCPConn is an implementation of the Conn interface
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// for TCP network connections.
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type TCPConn struct {
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plan9Conn
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}
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// SetDeadline implements the Conn SetDeadline method.
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func (c *TCPConn) SetDeadline(t time.Time) error {
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return syscall.EPLAN9
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}
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// SetReadDeadline implements the Conn SetReadDeadline method.
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func (c *TCPConn) SetReadDeadline(t time.Time) error {
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return syscall.EPLAN9
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}
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// SetWriteDeadline implements the Conn SetWriteDeadline method.
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func (c *TCPConn) SetWriteDeadline(t time.Time) error {
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return syscall.EPLAN9
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}
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// CloseRead shuts down the reading side of the TCP connection.
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// Most callers should just use Close.
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func (c *TCPConn) CloseRead() error {
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if !c.ok() {
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return syscall.EINVAL
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}
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return syscall.EPLAN9
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}
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// CloseWrite shuts down the writing side of the TCP connection.
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// Most callers should just use Close.
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func (c *TCPConn) CloseWrite() error {
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if !c.ok() {
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return syscall.EINVAL
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}
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return syscall.EPLAN9
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}
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// DialTCP connects to the remote address raddr on the network net,
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// which must be "tcp", "tcp4", or "tcp6". If laddr is not nil, it is used
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// as the local address for the connection.
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func DialTCP(net string, laddr, raddr *TCPAddr) (c *TCPConn, err error) {
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switch net {
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case "tcp", "tcp4", "tcp6":
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default:
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return nil, UnknownNetworkError(net)
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}
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if raddr == nil {
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return nil, &OpError{"dial", net, nil, errMissingAddress}
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}
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c1, err := dialPlan9(net, laddr, raddr)
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if err != nil {
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return
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}
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return &TCPConn{*c1}, nil
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}
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// TCPListener is a TCP network listener.
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// Clients should typically use variables of type Listener
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// instead of assuming TCP.
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type TCPListener struct {
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plan9Listener
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}
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// ListenTCP announces on the TCP address laddr and returns a TCP listener.
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// Net must be "tcp", "tcp4", or "tcp6".
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// If laddr has a port of 0, it means to listen on some available port.
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// The caller can use l.Addr() to retrieve the chosen address.
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func ListenTCP(net string, laddr *TCPAddr) (l *TCPListener, err error) {
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switch net {
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case "tcp", "tcp4", "tcp6":
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default:
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return nil, UnknownNetworkError(net)
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}
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if laddr == nil {
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return nil, &OpError{"listen", net, nil, errMissingAddress}
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}
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l1, err := listenPlan9(net, laddr)
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if err != nil {
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return
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}
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return &TCPListener{*l1}, nil
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}
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