mirror of
https://github.com/cesanta/mongoose.git
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87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/*
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* Copyright (c) 2014 Cesanta Software Limited
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* All rights reserved
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* This software is dual-licensed: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. For the terms of this
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* license, see <http://www.gnu.org/licenses/>.
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*
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* You are free to use this software under the terms of the GNU General
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* Public License, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* Alternatively, you can license this software under a commercial
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* license, as set out in <https://www.cesanta.com/license>.
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*/
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#include "mongoose.h"
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struct mg_mqtt_topic_expression topic_expressions[] = {
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{"/stuff", 0}
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};
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static void ev_handler(struct mg_connection *nc, int ev, void *p) {
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struct mg_mqtt_message *msg = (struct mg_mqtt_message *)p;
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(void) nc;
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#if 0
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if (ev != NS_POLL)
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printf("USER HANDLER GOT %d\n", ev);
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#endif
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switch (ev) {
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case NS_CONNECT:
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mg_set_protocol_mqtt(nc);
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mg_send_mqtt_handshake(nc, "dummy");
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break;
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case NS_MQTT_CONNACK:
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if (msg->connack_ret_code != NS_MQTT_CONNACK_ACCEPTED) {
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printf("Got mqtt connection error: %d\n", msg->connack_ret_code);
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exit(1);
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}
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printf("Subscribing to '/stuff'\n");
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mg_mqtt_subscribe(nc, topic_expressions, sizeof(topic_expressions)/sizeof(*topic_expressions), 42);
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break;
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case NS_MQTT_PUBACK:
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printf("Message publishing acknowledged (msg_id: %d)\n", msg->message_id);
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break;
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case NS_MQTT_SUBACK:
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printf("Subscription acknowledged, forwarding to '/test'\n");
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break;
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case NS_MQTT_PUBLISH:
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{
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#if 0
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char hex[1024] = {0};
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mg_hexdump(nc->recv_mbuf.buf, msg->payload.len, hex, sizeof(hex));
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printf("Got incoming message %s:\n%s", msg->topic, hex);
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#else
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printf("Got incoming message %s: %.*s\n", msg->topic, (int)msg->payload.len, msg->payload.p);
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#endif
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printf("Forwarding to /test\n");
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mg_mqtt_publish(nc, "/test", 65, NS_MQTT_QOS(0), msg->payload.p, msg->payload.len);
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}
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break;
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case NS_CLOSE:
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printf("Connection closed\n");
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exit(1);
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}
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}
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int main(void) {
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struct mg_mgr mgr;
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const char *address = "localhost:1883";
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mg_mgr_init(&mgr, NULL);
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if (mg_connect(&mgr, address, ev_handler) == NULL) {
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fprintf(stderr, "mg_connect(%s) failed\n", address);
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exit(EXIT_FAILURE);
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}
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for(;;) {
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mg_mgr_poll(&mgr, 1000);
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}
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}
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