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#include "tcpecho.h"
33
34#include "lwip/opt.h"
35
36#if LWIP_NETCONN
37
38#include "lwip/sys.h"
39#include "lwip/api.h"
40/*-----------------------------------------------------------------------------------*/
41static void
42tcpecho_thread(void *arg)
43{
44  struct netconn *conn, *newconn;
45  err_t err;
46  LWIP_UNUSED_ARG(arg);
47
48  /* Create a new connection identifier. */
49  /* Bind connection to well known port number 7. */
50#if LWIP_IPV6
51  conn = netconn_new(NETCONN_TCP_IPV6);
52  netconn_bind(conn, IP6_ADDR_ANY, 7);
53#else /* LWIP_IPV6 */
54  conn = netconn_new(NETCONN_TCP);
55  netconn_bind(conn, IP_ADDR_ANY, 7);
56#endif /* LWIP_IPV6 */
57  LWIP_ERROR("tcpecho: invalid conn", (conn != NULL), return;);
58
59  /* Tell connection to go into listening mode. */
60  netconn_listen(conn);
61
62  while (1) {
63
64    /* Grab new connection. */
65    err = netconn_accept(conn, &newconn);
66    /*printf("accepted new connection %p\n", newconn);*/
67    /* Process the new connection. */
68    if (err == ERR_OK) {
69      struct netbuf *buf;
70      void *data;
71      u16_t len;
72
73      while ((err = netconn_recv(newconn, &buf)) == ERR_OK) {
74        /*printf("Recved\n");*/
75        do {
76             netbuf_data(buf, &data, &len);
77             err = netconn_write(newconn, data, len, NETCONN_COPY);
78#if 0
79            if (err != ERR_OK) {
80              printf("tcpecho: netconn_write: error \"%s\"\n", lwip_strerr(err));
81            }
82#endif
83        } while (netbuf_next(buf) >= 0);
84        netbuf_delete(buf);
85      }
86      /*printf("Got EOF, looping\n");*/
87      /* Close connection and discard connection identifier. */
88      netconn_close(newconn);
89      netconn_delete(newconn);
90    }
91  }
92}
93/*-----------------------------------------------------------------------------------*/
94void
95tcpecho_init(void)
96{
97  sys_thread_new("tcpecho_thread", tcpecho_thread, NULL, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO);
98}
99/*-----------------------------------------------------------------------------------*/
100
101#endif /* LWIP_NETCONN */
102