vendor/golang.org/x/net/ipv4/batch.go

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// Copyright 2017 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.

package ipv4

import (
	"net"
	"runtime"

	"golang.org/x/net/internal/socket"
)

// BUG(mikio): On Windows, the ReadBatch and WriteBatch methods of
// PacketConn are not implemented.

// BUG(mikio): On Windows, the ReadBatch and WriteBatch methods of
// RawConn are not implemented.

// A Message represents an IO message.
//
//	type Message struct {
//		Buffers [][]byte
//		OOB     []byte
//		Addr    net.Addr
//		N       int
//		NN      int
//		Flags   int
//	}
//
// The Buffers fields represents a list of contiguous buffers, which
// can be used for vectored IO, for example, putting a header and a
// payload in each slice.
// When writing, the Buffers field must contain at least one byte to
// write.
// When reading, the Buffers field will always contain a byte to read.
//
// The OOB field contains protocol-specific control or miscellaneous
// ancillary data known as out-of-band data.
// It can be nil when not required.
//
// The Addr field specifies a destination address when writing.
// It can be nil when the underlying protocol of the endpoint uses
// connection-oriented communication.
// After a successful read, it may contain the source address on the
// received packet.
//
// The N field indicates the number of bytes read or written from/to
// Buffers.
//
// The NN field indicates the number of bytes read or written from/to
// OOB.
//
// The Flags field contains protocol-specific information on the
// received message.
type Message = socket.Message

// ReadBatch reads a batch of messages.
//
// The provided flags is a set of platform-dependent flags, such as