| /* |
| * 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/api.h" |
| #include "lwip/sys.h" |
| |
| /*-----------------------------------------------------------------------------------*/ |
| void |
| udpecho_thread(void *arg) |
| { |
| static struct netconn *conn; |
| static struct netbuf *buf; |
| static struct ip_addr *addr; |
| static unsigned short port; |
| char buffer[4096]; |
| |
| conn = netconn_new(NETCONN_UDP); |
| netconn_bind(conn, NULL, 7); |
| |
| while(1) { |
| buf = netconn_recv(conn); |
| addr = netbuf_fromaddr(buf); |
| port = netbuf_fromport(buf); |
| netconn_connect(conn, addr, port); |
| netbuf_copy(buf, buffer, buf->p->tot_len); |
| buffer[buf->p->tot_len] = '\0'; |
| netconn_send(conn, buf); |
| printf("got %s\n", buffer); |
| netbuf_delete(buf); |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| void |
| udpecho_init(void) |
| { |
| sys_thread_new(udpecho_thread, NULL); |
| } |