1/* 2 * Copyright (c) 2001-2003 Swedish Institute of Computer Science. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 25 * OF SUCH DAMAGE. 26 * 27 * This file is part of the lwIP TCP/IP stack. 28 * 29 * Author: Adam Dunkels <adam@sics.se> 30 * 31 */ 32 33#include "udpecho.h" 34 35#include "lwip/opt.h" 36 37#if LWIP_NETCONN 38 39#include "lwip/api.h" 40#include "lwip/sys.h" 41 42/*-----------------------------------------------------------------------------------*/ 43static void 44udpecho_thread(void *arg) 45{ 46 struct netconn *conn; 47 struct netbuf *buf; 48 char buffer[4096]; 49 err_t err; 50 LWIP_UNUSED_ARG(arg); 51 52#if LWIP_IPV6 53 conn = netconn_new(NETCONN_UDP_IPV6); 54 netconn_bind(conn, IP6_ADDR_ANY, 7); 55#else /* LWIP_IPV6 */ 56 conn = netconn_new(NETCONN_UDP); 57 netconn_bind(conn, IP_ADDR_ANY, 7); 58#endif /* LWIP_IPV6 */ 59 LWIP_ERROR("udpecho: invalid conn", (conn != NULL), return;); 60 61 while (1) { 62 err = netconn_recv(conn, &buf); 63 if (err == ERR_OK) { 64 /* no need netconn_connect here, since the netbuf contains the address */ 65 if(netbuf_copy(buf, buffer, sizeof(buffer)) != buf->p->tot_len) { 66 LWIP_DEBUGF(LWIP_DBG_ON, ("netbuf_copy failed\n")); 67 } else { 68 buffer[buf->p->tot_len] = '\0'; 69 err = netconn_send(conn, buf); 70 if(err != ERR_OK) { 71 LWIP_DEBUGF(LWIP_DBG_ON, ("netconn_send failed: %d\n", (int)err)); 72 } else { 73 LWIP_DEBUGF(LWIP_DBG_ON, ("got %s\n", buffer)); 74 } 75 } 76 netbuf_delete(buf); 77 } 78 } 79} 80/*-----------------------------------------------------------------------------------*/ 81void 82udpecho_init(void) 83{ 84 sys_thread_new("udpecho_thread", udpecho_thread, NULL, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO); 85} 86 87#endif /* LWIP_NETCONN */ 88