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https://github.com/lwip-tcpip/lwip.git
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89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/*
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* Copyright (c) 2001-2003 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 modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#include "udpecho.h"
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#include "lwip/opt.h"
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#if LWIP_NETCONN
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#include "lwip/api.h"
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#include "lwip/sys.h"
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/*-----------------------------------------------------------------------------------*/
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static void
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udpecho_thread(void *arg)
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{
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struct netconn *conn;
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struct netbuf *buf;
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char buffer[4096];
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err_t err;
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LWIP_UNUSED_ARG(arg);
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#if LWIP_IPV6
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conn = netconn_new(NETCONN_UDP_IPV6);
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LWIP_ERROR("udpecho: invalid conn", (conn != NULL), return;);
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netconn_bind(conn, IP6_ADDR_ANY, 7);
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#else /* LWIP_IPV6 */
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conn = netconn_new(NETCONN_UDP);
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LWIP_ERROR("udpecho: invalid conn", (conn != NULL), return;);
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netconn_bind(conn, IP_ADDR_ANY, 7);
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#endif /* LWIP_IPV6 */
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while (1) {
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err = netconn_recv(conn, &buf);
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if (err == ERR_OK) {
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/* no need netconn_connect here, since the netbuf contains the address */
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if(netbuf_copy(buf, buffer, sizeof(buffer)) != buf->p->tot_len) {
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LWIP_DEBUGF(LWIP_DBG_ON, ("netbuf_copy failed\n"));
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} else {
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buffer[buf->p->tot_len] = '\0';
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err = netconn_send(conn, buf);
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if(err != ERR_OK) {
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LWIP_DEBUGF(LWIP_DBG_ON, ("netconn_send failed: %d\n", (int)err));
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} else {
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LWIP_DEBUGF(LWIP_DBG_ON, ("got %s\n", buffer));
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}
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}
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netbuf_delete(buf);
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}
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}
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}
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/*-----------------------------------------------------------------------------------*/
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void
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udpecho_init(void)
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{
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sys_thread_new("udpecho_thread", udpecho_thread, NULL, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO);
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}
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#endif /* LWIP_NETCONN */
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