sdk-ameba-v4.0b_without_nda.../component/common/utilities/udpecho.c

93 lines
2.8 KiB
C
Raw Normal View History

2017-10-15 06:36:37 +00:00
/*
* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#include "lwip/opt.h"
#if LWIP_NETCONN
#include "lwip/api.h"
#include "lwip/sys.h"
#define UDPECHO_THREAD_PRIO ( tskIDLE_PRIORITY + 3 )
static struct netconn *conn;
static struct netbuf *buf;
static struct ip_addr *addr;
static unsigned short port;
/*-----------------------------------------------------------------------------------*/
static void udpecho_thread(void *arg)
{
err_t err;
LWIP_UNUSED_ARG(arg);
conn = netconn_new(NETCONN_UDP);
if (conn!= NULL)
{
err = netconn_bind(conn, IP_ADDR_ANY, 7);
if (err == ERR_OK)
{
while (1)
{
buf = netconn_recv(conn);
if (buf!= NULL)
{
addr = netbuf_fromaddr(buf);
port = netbuf_fromport(buf);
netconn_connect(conn, addr, port);
buf->addr = NULL;
netconn_send(conn,buf);
netbuf_delete(buf);
}
}
}
else
{
printf("can not bind netconn");
}
}
else
{
printf("can create new UDP netconn");
}
}
/*-----------------------------------------------------------------------------------*/
void udpecho_init(void)
{
sys_thread_new("udpecho_thread", udpecho_thread, NULL, DEFAULT_THREAD_STACKSIZE,UDPECHO_THREAD_PRIO );
}
#endif /* LWIP_NETCONN */