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https://github.com/lwip-tcpip/lwip.git
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89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
/*
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* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#include "lwip/sys.h"
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#include "lwip/api.h"
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/*-----------------------------------------------------------------------------------*/
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static void
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tcpecho_thread(void *arg)
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{
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struct netconn *conn, *newconn;
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err_t err;
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/* Create a new connection identifier. */
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conn = netconn_new(NETCONN_TCP);
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/* Bind connection to well known port number 7. */
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netconn_bind(conn, NULL, 7);
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/* Tell connection to go into listening mode. */
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netconn_listen(conn);
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while(1) {
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/* Grab new connection. */
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newconn = netconn_accept(conn);
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/*printf("accepted new connection %p\n", newconn);*/
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/* Process the new connection. */
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if(newconn != NULL) {
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struct netbuf *buf;
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void *data;
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u16_t len;
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while((buf = netconn_recv(newconn)) != NULL) {
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/*printf("Recved\n");*/
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do {
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netbuf_data(buf, &data, &len);
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err = netconn_write(newconn, data, len, NETCONN_COPY);
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if(err != ERR_OK) {
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/* printf("tcpecho: netconn_write: error \"%s\"\n", lwip_strerr(err));*/
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}
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} while(netbuf_next(buf) >= 0);
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netbuf_delete(buf);
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}
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/*printf("Got EOF, looping\n");*/
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/* Close connection and discard connection identifier. */
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netconn_delete(newconn);
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}
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}
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}
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/*-----------------------------------------------------------------------------------*/
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void
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tcpecho_init(void)
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{
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sys_thread_new(tcpecho_thread, NULL);
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}
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/*-----------------------------------------------------------------------------------*/
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