Some quick code to use UDP-only (no TCP) with mBed. Echos received packets and sends packets when a button is pressed
inet_chksum.h
00001 /* 00002 * Copyright (c) 2001-2004 Swedish Institute of Computer Science. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without modification, 00006 * are permitted provided that the following conditions are met: 00007 * 00008 * 1. Redistributions of source code must retain the above copyright notice, 00009 * this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright notice, 00011 * this list of conditions and the following disclaimer in the documentation 00012 * and/or other materials provided with the distribution. 00013 * 3. The name of the author may not be used to endorse or promote products 00014 * derived from this software without specific prior written permission. 00015 * 00016 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 00017 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00018 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 00019 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00020 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 00021 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00022 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00023 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 00024 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 00025 * OF SUCH DAMAGE. 00026 * 00027 * This file is part of the lwIP TCP/IP stack. 00028 * 00029 * Author: Adam Dunkels <adam@sics.se> 00030 * 00031 */ 00032 #ifndef __LWIP_INET_CHKSUM_H__ 00033 #define __LWIP_INET_CHKSUM_H__ 00034 00035 #include "lwip/opt.h" 00036 00037 #include "lwip/pbuf.h" 00038 #include "lwip/ip_addr.h" 00039 00040 #ifdef __cplusplus 00041 extern "C" { 00042 #endif 00043 00044 u16_t inet_chksum(void *dataptr, u16_t len); 00045 u16_t inet_chksum_pbuf(struct pbuf *p); 00046 u16_t inet_chksum_pseudo(struct pbuf *p, 00047 struct ip_addr *src, struct ip_addr *dest, 00048 u8_t proto, u16_t proto_len); 00049 #if LWIP_UDPLITE 00050 u16_t inet_chksum_pseudo_partial(struct pbuf *p, 00051 struct ip_addr *src, struct ip_addr *dest, 00052 u8_t proto, u16_t proto_len, u16_t chksum_len); 00053 #endif 00054 00055 #ifdef __cplusplus 00056 } 00057 #endif 00058 00059 #endif /* __LWIP_INET_H__ */ 00060
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