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