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