// Copyright 2012 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" // BUG(mikio): On Windows, the ControlMessage for ReadFrom and WriteTo // methods of PacketConn is not implemented. // A payloadHandler represents the IPv4 datagram payload handler. type payloadHandler struct { net.PacketConn rawOpt } func (c *payloadHandler) ok() bool { return c != nil && c.PacketConn != nil }