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 /*-----------------------------------------------------------------------------------*/
43 static void
udpecho_thread(void * arg)44 udpecho_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 LWIP_ERROR("udpecho: invalid conn", (conn != NULL), return;);
55 netconn_bind(conn, IP6_ADDR_ANY, 7);
56 #else /* LWIP_IPV6 */
57 conn = netconn_new(NETCONN_UDP);
58 LWIP_ERROR("udpecho: invalid conn", (conn != NULL), return;);
59 netconn_bind(conn, IP_ADDR_ANY, 7);
60 #endif /* LWIP_IPV6 */
61
62 while (1) {
63 err = netconn_recv(conn, &buf);
64 if (err == ERR_OK) {
65 /* no need netconn_connect here, since the netbuf contains the address */
66 if(netbuf_copy(buf, buffer, sizeof(buffer)) != buf->p->tot_len) {
67 LWIP_DEBUGF(LWIP_DBG_ON, ("netbuf_copy failed\n"));
68 } else {
69 buffer[buf->p->tot_len] = '\0';
70 err = netconn_send(conn, buf);
71 if(err != ERR_OK) {
72 LWIP_DEBUGF(LWIP_DBG_ON, ("netconn_send failed: %d\n", (int)err));
73 } else {
74 LWIP_DEBUGF(LWIP_DBG_ON, ("got %s\n", buffer));
75 }
76 }
77 netbuf_delete(buf);
78 }
79 }
80 }
81 /*-----------------------------------------------------------------------------------*/
82 void
udpecho_init(void)83 udpecho_init(void)
84 {
85 sys_thread_new("udpecho_thread", udpecho_thread, NULL, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO);
86 }
87
88 #endif /* LWIP_NETCONN */
89