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92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/*
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* Copyright (c) 2005, Swedish Institute of Computer Science
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* @(#)$Id: udprecv.c,v 1.3 2006/12/11 15:19:34 fros4943 Exp $
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*/
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#include <stdio.h>
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#include <string.h>
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#include "contiki.h"
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#include "net/uip.h"
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PROCESS(udprecv_process, "UDP recv process");
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PROCESS_THREAD(udprecv_process, ev, data)
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{
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static struct uip_udp_conn *c;
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PROCESS_EXITHANDLER(goto exit);
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PROCESS_BEGIN();
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printf("udprecv_process starting\n");
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{
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uip_ipaddr_t any;
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uip_ipaddr(&any, 0,0,0,0);
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c = udp_new(&any, HTONS(0), NULL);
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uip_udp_bind(c, HTONS(4321));
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}
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while(1) {
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PROCESS_YIELD();
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if(ev == tcpip_event && uip_newdata()) {
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u8_t *src = ((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->srcipaddr.u8;
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printf("%d.%d.%d.%d: %s\n",
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src[0], src[1], src[2], src[3], (char *)uip_appdata);
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}
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}
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exit:
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/* Contiki does automatic garbage collection of uIP state and we
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* need not worry about that. */
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printf("udprecv_process exiting\n");
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PROCESS_END();
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}
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/*
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* Initialize this kernel module.
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*/
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void
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_init(void)
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{
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process_start(&udprecv_process, NULL);
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}
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/*
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* When this module is unloaded we must clean up!
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*/
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void
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_fini(void)
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{
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process_exit(&udprecv_process);
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}
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