mirror of
https://github.com/lwip-tcpip/lwip.git
synced 2024-11-16 14:11:02 +00:00
ac46e42aa2
... from http://git.savannah.gnu.org/cgit/lwip/lwip-contrib.git/ into contrib/ subdir, STABLE-2_1_0_RELEASE tag lwIP contrib is now officially frozen TODO: Fix build
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2016 Stephan Linz <linz@li-pro.net>, Li-Pro.Net
|
|
* All rights reserved.
|
|
*
|
|
* Based on examples provided by
|
|
* Iwan Budi Kusnanto <ibk@labhijau.net> (https://gist.github.com/iwanbk/1399729)
|
|
* Juri Haberland <juri@sapienti-sat.org> (https://lists.gnu.org/archive/html/lwip-users/2007-06/msg00078.html)
|
|
*
|
|
* 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 and a contribution to the lwIP TCP/IP stack.
|
|
*
|
|
* Credits go to Adam Dunkels (and the current maintainers) of this software.
|
|
*
|
|
* Stephan Linz rewrote this file to get a basic echo example.
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* UDP echo server example using raw API.
|
|
*
|
|
* Echos all bytes sent by connecting client,
|
|
* and passively closes when client is done.
|
|
*
|
|
*/
|
|
|
|
#include "lwip/opt.h"
|
|
#include "lwip/debug.h"
|
|
#include "lwip/stats.h"
|
|
#include "lwip/udp.h"
|
|
#include "udpecho_raw.h"
|
|
|
|
#if LWIP_UDP
|
|
|
|
static struct udp_pcb *udpecho_raw_pcb;
|
|
|
|
static void
|
|
udpecho_raw_recv(void *arg, struct udp_pcb *upcb, struct pbuf *p,
|
|
const ip_addr_t *addr, u16_t port)
|
|
{
|
|
LWIP_UNUSED_ARG(arg);
|
|
if (p != NULL) {
|
|
/* send received packet back to sender */
|
|
udp_sendto(upcb, p, addr, port);
|
|
/* free the pbuf */
|
|
pbuf_free(p);
|
|
}
|
|
}
|
|
|
|
void
|
|
udpecho_raw_init(void)
|
|
{
|
|
udpecho_raw_pcb = udp_new_ip_type(IPADDR_TYPE_ANY);
|
|
if (udpecho_raw_pcb != NULL) {
|
|
err_t err;
|
|
|
|
err = udp_bind(udpecho_raw_pcb, IP_ANY_TYPE, 7);
|
|
if (err == ERR_OK) {
|
|
udp_recv(udpecho_raw_pcb, udpecho_raw_recv, NULL);
|
|
} else {
|
|
/* abort? output diagnostic? */
|
|
}
|
|
} else {
|
|
/* abort? output diagnostic? */
|
|
}
|
|
}
|
|
|
|
#endif /* LWIP_UDP */
|