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| /************************************************************************* | |
| * (C) 2022 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com> | |
| * by Michael Pounov <misho@elwix.org> | |
| * | |
| * $Author$ | |
| * $Id$ | |
| * | |
| ************************************************************************** | |
| The ELWIX and AITNET software is distributed under the following | |
| terms: | |
| All of the documentation and software included in the ELWIX and AITNET | |
| Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> | |
| Copyright 2004 - 2022 | |
| by Michael Pounov <misho@elwix.org>. 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. All advertising materials mentioning features or use of this software | |
| must display the following acknowledgement: | |
| This product includes software developed by Michael Pounov <misho@elwix.org> | |
| ELWIX - Embedded LightWeight unIX and its contributors. | |
| 4. Neither the name of AITNET nor the names of its contributors | |
| may be used to endorse or promote products derived from this software | |
| without specific prior written permission. | |
| THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. | |
| */ | |
| #ifndef __MQTTCLI_H | |
| #define __MQTTCLI_H | |
| #ifdef API_CLIENT_SIDE | |
| /* MQTT client structure */ | |
| typedef struct { | |
| int sock; | |
| unsigned short timeout; | |
| mqtt_msg_t *buf; | |
| } mqtt_cli_t; | |
| /* | |
| * mqtt_cli_Open() - Open client connection to MQTT broker | |
| * | |
| * @addr = brokers address | |
| * @timeout = timeout | |
| * return: NULL error or !=NULL connected to broker | |
| */ | |
| mqtt_cli_t *mqtt_cli_Open(struct sockaddr *addr, unsigned short timeout); | |
| /* | |
| * mqtt_cli_Close() - Close client connection | |
| * | |
| * @cli = connected client | |
| * return: -1 error or 0 disconnected client and freed all resources | |
| */ | |
| int mqtt_cli_Close(mqtt_cli_t ** __restrict cli); | |
| /* | |
| * mqtt_cli_Subscribe() - Subscribe to broker | |
| * | |
| * @cli = connected client | |
| * @Topics = Topics for subscribes | |
| * @msgID = Message ID | |
| * return: NULL error or !=NULL allocated array with subscribed QoS responses, | |
| * must be e_free() result! | |
| */ | |
| unsigned char *mqtt_cli_Subscribe(mqtt_cli_t * __restrict cli, | |
| mqtt_subscr_t ** __restrict Topics, unsigned short msgID); | |
| /* | |
| * mqtt_cli_Unsubscribe() - Unsubscribe from broker | |
| * | |
| * @cli = connected client | |
| * @Topics = Topics for unsubscribes | |
| * @msgID = Message ID | |
| * @Dup = Duplicated request | |
| * @QoS = Message QoS | |
| * return: -1 error or 0 ok | |
| */ | |
| int mqtt_cli_Unsubscribe(mqtt_cli_t * __restrict cli, | |
| mqtt_subscr_t ** __restrict Topics, unsigned short msgID, | |
| unsigned char Dup, unsigned char QoS); | |
| /* | |
| * mqtt_cli_Publish() - Publish message to broker | |
| * | |
| * @cli = connected client | |
| * @msgID = Message ID | |
| * @Dup = Duplicated request | |
| * @QoS = Message QoS | |
| * @Retain = Retain message | |
| * @csTopic = Topic | |
| * @pData = Data | |
| * @datLen = Data length | |
| * return: -1 error or > -1 sended bytes | |
| */ | |
| int mqtt_cli_Publish(mqtt_cli_t * __restrict cli, unsigned short msgID, | |
| unsigned char Dup, unsigned char QoS, unsigned char Retain, | |
| const char *csTopic, const void *pData, int datLen); | |
| #endif | |
| #endif |