mirror of
https://github.com/golang/go
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11b5f98bf0
This change fixes inconsistent error values on Write,
WriteTo{,UDP,IP,Unix} and WriteMsg{UDP,IP,Unix}.
Updates #4856.
Change-Id: I4208ab6a0650455ad7d70a80a2d6169351d6055f
Reviewed-on: https://go-review.googlesource.com/8993
Reviewed-by: Ian Lance Taylor <iant@golang.org>
83 lines
3.1 KiB
Go
83 lines
3.1 KiB
Go
// Copyright 2010 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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"syscall"
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"time"
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)
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// IPConn is the implementation of the Conn and PacketConn interfaces
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// for IP network connections.
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type IPConn struct {
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conn
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}
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// ReadFromIP reads an IP packet from c, copying the payload into b.
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// It returns the number of bytes copied into b and the return address
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// that was on the packet.
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//
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// ReadFromIP can be made to time out and return an error with
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// Timeout() == true after a fixed time limit; see SetDeadline and
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// SetReadDeadline.
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func (c *IPConn) ReadFromIP(b []byte) (int, *IPAddr, error) {
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return 0, nil, &OpError{Op: "read", Net: c.fd.net, Addr: c.fd.laddr, Err: syscall.EPLAN9}
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}
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// ReadFrom implements the PacketConn ReadFrom method.
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func (c *IPConn) ReadFrom(b []byte) (int, Addr, error) {
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return 0, nil, &OpError{Op: "read", Net: c.fd.net, Addr: c.fd.laddr, Err: syscall.EPLAN9}
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}
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// ReadMsgIP reads a packet from c, copying the payload into b and the
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// associated out-of-band data into oob. It returns the number of
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// bytes copied into b, the number of bytes copied into oob, the flags
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// that were set on the packet and the source address of the packet.
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func (c *IPConn) ReadMsgIP(b, oob []byte) (n, oobn, flags int, addr *IPAddr, err error) {
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return 0, 0, 0, nil, &OpError{Op: "read", Net: c.fd.net, Addr: c.fd.laddr, Err: syscall.EPLAN9}
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}
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// WriteToIP writes an IP packet to addr via c, copying the payload
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// from b.
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//
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// WriteToIP can be made to time out and return an error with
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// Timeout() == true after a fixed time limit; see SetDeadline and
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// SetWriteDeadline. On packet-oriented connections, write timeouts
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// are rare.
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func (c *IPConn) WriteToIP(b []byte, addr *IPAddr) (int, error) {
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return 0, &OpError{Op: "write", Net: c.fd.net, Addr: addr, Err: syscall.EPLAN9}
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}
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// WriteTo implements the PacketConn WriteTo method.
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func (c *IPConn) WriteTo(b []byte, addr Addr) (int, error) {
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return 0, &OpError{Op: "write", Net: c.fd.net, Addr: addr, Err: syscall.EPLAN9}
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}
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// WriteMsgIP writes a packet to addr via c, copying the payload from
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// b and the associated out-of-band data from oob. It returns the
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// number of payload and out-of-band bytes written.
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func (c *IPConn) WriteMsgIP(b, oob []byte, addr *IPAddr) (n, oobn int, err error) {
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return 0, 0, &OpError{Op: "write", Net: c.fd.net, Addr: addr, Err: syscall.EPLAN9}
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}
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// DialIP connects to the remote address raddr on the network protocol
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// netProto, which must be "ip", "ip4", or "ip6" followed by a colon
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// and a protocol number or name.
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func DialIP(netProto string, laddr, raddr *IPAddr) (*IPConn, error) {
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return dialIP(netProto, laddr, raddr, noDeadline)
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}
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func dialIP(netProto string, laddr, raddr *IPAddr, deadline time.Time) (*IPConn, error) {
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return nil, syscall.EPLAN9
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}
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// ListenIP listens for incoming IP packets addressed to the local
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// address laddr. The returned connection's ReadFrom and WriteTo
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// methods can be used to receive and send IP packets with per-packet
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// addressing.
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func ListenIP(netProto string, laddr *IPAddr) (*IPConn, error) {
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return nil, syscall.EPLAN9
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}
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