1// Copyright 2013 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build !aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !zos
6// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!zos
7
8package ipv6
9
10import "net"
11
12// ReadFrom reads a payload of the received IPv6 datagram, from the
13// endpoint c, copying the payload into b. It returns the number of
14// bytes copied into b, the control message cm and the source address
15// src of the received datagram.
16func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
17	if !c.ok() {
18		return 0, nil, nil, errInvalidConn
19	}
20	if n, src, err = c.PacketConn.ReadFrom(b); err != nil {
21		return 0, nil, nil, err
22	}
23	return
24}
25
26// WriteTo writes a payload of the IPv6 datagram, to the destination
27// address dst through the endpoint c, copying the payload from b. It
28// returns the number of bytes written. The control message cm allows
29// the IPv6 header fields and the datagram path to be specified. The
30// cm may be nil if control of the outgoing datagram is not required.
31func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
32	if !c.ok() {
33		return 0, errInvalidConn
34	}
35	if dst == nil {
36		return 0, errMissingAddress
37	}
38	return c.PacketConn.WriteTo(b, dst)
39}
40