/* * Udp.cpp: Library to send/receive UDP packets with the Arduino ethernet shield. * This version only offers minimal wrapping of socket.cpp * Drop Udp.h/.cpp into the Ethernet library directory at hardware/libraries/Ethernet/ * * NOTE: UDP is fast, but has some important limitations (thanks to Warren Gray for mentioning these) * 1) UDP does not guarantee the order in which assembled UDP packets are received. This * might not happen often in practice, but in larger network topologies, a UDP * packet can be received out of sequence. * 2) UDP does not guard against lost packets - so packets *can* disappear without the sender being * aware of it. Again, this may not be a concern in practice on small local networks. * For more information, see http://www.cafeaulait.org/course/week12/35.html * * MIT License: * Copyright (c) 2008 Bjoern Hartmann * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * bjoern@cs.stanford.edu 12/30/2008 */ #include "Ethernet.h"