mirror of
https://github.com/cesanta/mongoose.git
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72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
/*
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* Copyright (c) 2015 Cesanta Software Limited
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* All rights reserved
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*
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* This program sends CoAP CON-message to server (coap.me by default)
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* and waits for answer.
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*/
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#include "mongoose.h"
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static int s_time_to_exit = 0;
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static char *s_default_address = "udp://coap.me:5683";
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static void coap_handler(struct mg_connection *nc, int ev, void *p) {
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switch (ev) {
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case MG_EV_CONNECT: {
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struct mg_coap_message cm;
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uint32_t res;
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memset(&cm, 0, sizeof(cm));
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cm.msg_id = 1;
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cm.msg_type = MG_COAP_MSG_CON;
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printf("Sending CON...\n");
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res = mg_coap_send_message(nc, &cm);
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if (res == 0) {
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printf("Sent CON with msg_id = %d\n", cm.msg_id);
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} else {
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printf("Error: %d\n", res);
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s_time_to_exit = 1;
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}
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break;
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}
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case MG_EV_COAP_ACK:
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case MG_EV_COAP_RST: {
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struct mg_coap_message *cm = (struct mg_coap_message *) p;
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printf("ACK/RST for message with msg_id = %d received\n", cm->msg_id);
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s_time_to_exit = 1;
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break;
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}
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}
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}
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int main(int argc, char *argv[]) {
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struct mg_mgr mgr;
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struct mg_connection *nc;
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char *address = s_default_address;
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if (argc > 1) {
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address = argv[1];
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}
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printf("Using %s as CoAP server\n", address);
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mg_mgr_init(&mgr, 0);
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nc = mg_connect(&mgr, address, coap_handler);
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if (nc == NULL) {
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printf("Unable to connect to %s\n", address);
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return -1;
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}
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mg_set_protocol_coap(nc);
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while (!s_time_to_exit) {
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mg_mgr_poll(&mgr, 1000000);
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}
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mg_mgr_free(&mgr);
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return 0;
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}
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