sdk-ameba-v4.0b_without_nda.../component/common/utilities/tcpecho.c
2017-10-15 14:36:37 +08:00

121 lines
3.6 KiB
C

/*
* 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/sys.h"
#include "lwip/api.h"
#define TCPECHO_THREAD_PRIO ( tskIDLE_PRIORITY + 3 )
/*-----------------------------------------------------------------------------------*/
static void tcpecho_thread(void *arg)
{
struct netconn *conn, *newconn;
err_t err;
LWIP_UNUSED_ARG(arg);
/* Create a new connection identifier. */
conn = netconn_new(NETCONN_TCP);
if (conn!=NULL)
{
/* Bind connection to well known port number 7. */
err = netconn_bind(conn, NULL, 7);
if (err == ERR_OK)
{
/* Tell connection to go into listening mode. */
netconn_listen(conn);
while (1)
{
/* Grab new connection. */
newconn = netconn_accept(conn);
/* Process the new connection. */
if (newconn)
{
struct netbuf *buf;
void *data;
u16_t len;
while ((buf = netconn_recv(newconn)) != NULL)
{
do
{
netbuf_data(buf, &data, &len);
netconn_write(newconn, data, len, NETCONN_COPY);
}
while (netbuf_next(buf) >= 0);
netbuf_delete(buf);
}
/* Close connection and discard connection identifier. */
netconn_close(newconn);
netconn_delete(newconn);
}
}
}
else
{
printf(" can not bind TCP netconn");
}
}
else
{
printf("can not create TCP netconn");
}
}
/*-----------------------------------------------------------------------------------*/
void tcpecho_init(void)
{
sys_thread_new("tcpecho_thread", tcpecho_thread, NULL, DEFAULT_THREAD_STACKSIZE, TCPECHO_THREAD_PRIO);
}
/*-----------------------------------------------------------------------------------*/
void cmd_tcpecho(int argc, char **argv)
{
printf("\n\rInit TCP ECHO Server ...");
tcpecho_init();
printf("\n\r\nPlease use echotool to connect to this echo server. ex. echotool 192.168.0.1 /p tcp /r 7 /n 0");
}
#endif /* LWIP_NETCONN */