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d0bfbb7ac8
For embedded applications that can call the 'main()' function multiple times, they need to have any statically (globally) defined variables reset to their default values.
153 lines
4.2 KiB
C
153 lines
4.2 KiB
C
/*
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* Demo for libcoap on lwIP
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*
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* partially copied from lwip-contrib/ports/unix/proj/minimal/main.c
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*
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*
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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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* Author: Adam Dunkels <adam@sics.se>
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* RT timer modifications by Christiaan Simons
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* lwip adaptions: chrysn <chrysn@fsfe.org>
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* also, https://savannah.nongnu.org/bugs/?40245 was applied */
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#include "client-coap.h"
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#include <lwip/init.h>
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#include <lwip/timeouts.h>
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#include <netif/etharp.h>
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#include <netif/tapif.h>
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#include <signal.h>
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#if LWIP_IPV4
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static ip4_addr_t ipaddr, netmask, gw;
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#endif /* LWIP_IPV4 */
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static int quit = 0;
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static void
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handle_sigint(int signum) {
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(void)signum;
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quit = 1;
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}
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/*
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* This function is called internally by coap_io_process() to check
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* for input.
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*/
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static int
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wait_for_input(void *arg, uint32_t milli_secs) {
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int ret;
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(void)milli_secs;
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/*
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* Poll netif, pass any read packet to lwIP
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* Has internal timeout of 1000 msec (sometimes less) based on
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* sys_timeouts_sleeptime().
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*/
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#if NO_SYS
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struct netif *netif = (struct netif *)arg;
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ret = tapif_select(netif);
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sys_check_timeouts();
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#else /* ! NO_SYS */
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(void)arg;
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ret = 0;
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#endif /* ! NO_SYS */
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return ret;
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}
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int
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main(int argc, char **argv) {
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struct netif netif;
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#ifndef _WIN32
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struct sigaction sa;
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#endif
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int no_more = 0;
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/* startup defaults (may be overridden by one or more opts). this is
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* hard-coded v4 even in presence of v6, which does auto-discovery and
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* should thus wind up with an address of fe80::12:34ff:fe56:78ab%tap0
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* */
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#if LWIP_IPV4
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IP4_ADDR(&gw, 192,168,114,1);
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IP4_ADDR(&ipaddr, 192,168,114,2);
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IP4_ADDR(&netmask, 255,255,255,0);
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#endif /* LWIP_IPV4 */
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#if NO_SYS
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lwip_init();
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#else /* ! NO_SYS */
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#include <lwip/tcpip.h>
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(void)lock_tcpip_core;
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tcpip_init(NULL, NULL);
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#endif /* ! NO_SYS */
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printf("TCP/IP initialized.\n");
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#if LWIP_IPV4
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netif_add(&netif, &ipaddr, &netmask, &gw, NULL, tapif_init, ethernet_input);
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#endif /* LWIP_IPV4 */
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netif.flags |= NETIF_FLAG_ETHARP;
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netif_set_default(&netif);
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netif_set_up(&netif);
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#if LWIP_IPV6
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netif_create_ip6_linklocal_address(&netif, 1);
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netif_ip6_addr_set_state(&netif, 0, IP6_ADDR_PREFERRED);
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#endif
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/* start applications here */
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#ifdef _WIN32
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signal(SIGINT, handle_sigint);
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#else
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memset(&sa, 0, sizeof(sa));
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sigemptyset(&sa.sa_mask);
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sa.sa_handler = handle_sigint;
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sa.sa_flags = 0;
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sigaction(SIGINT, &sa, NULL);
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sigaction(SIGTERM, &sa, NULL);
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/* So we do not exit on a SIGPIPE */
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sa.sa_handler = SIG_IGN;
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sigaction(SIGPIPE, &sa, NULL);
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#endif
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client_coap_init(wait_for_input, &netif, argc, argv);
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printf("Client Application started.\n");
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while (!quit && !no_more) {
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no_more = client_coap_poll();
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}
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client_coap_finished();
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printf("Client Application finished.\n");
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quit = 0;
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return 0;
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}
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