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MQTT client api and example

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This code based on ESP8266 port of the embedded C client in Eclipse Paho project
(http://www.eclipse.org/paho/) and it port for espressif
ESP8266_RTOS_SDK by baoshi (https://github.com/baoshi/ESP-RTOS-Paho.git)
This commit is contained in:
Yudi Ludkevich 2016-01-02 10:41:28 +03:00 • committed by Angus Gratton
parent 83c5f91bc0
commit 7e9d5bd2e2
21 changed files with 2793 additions and 0 deletions
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91
extras/paho_mqtt_c/MQTTClient.h Normal file
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/*******************************************************************************
* Copyright (c) 2014 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v1.0 which accompany this distribution.
*
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Allan Stockdill-Mander/Ian Craggs - initial API and implementation and/or initial documentation
*******************************************************************************/
#ifndef __MQTT_CLIENT_C_
#define __MQTT_CLIENT_C_
#include "MQTTPacket.h"
#include "MQTTESP8266.h"
#define MAX_PACKET_ID 65535
#define MAX_MESSAGE_HANDLERS 5
#define MAX_FAIL_ALLOWED 2
enum QoS { QOS0, QOS1, QOS2 };
// all failure return codes must be negative
enum returnCode {DISCONNECTED = -3, BUFFER_OVERFLOW = -2, FAILURE = -1, SUCCESS = 0 };
void NewTimer(Timer*);
typedef struct _MQTTMessage
{
enum QoS qos;
char retained;
char dup;
unsigned short id;
void *payload;
size_t payloadlen;
} MQTTMessage;
typedef struct _MessageData
{
MQTTString* topic;
MQTTMessage* message;
} MessageData;
typedef void (*messageHandler)(MessageData*);
struct _MQTTClient
{
unsigned int next_packetid;
unsigned int command_timeout_ms;
size_t buf_size, readbuf_size;
unsigned char *buf;
unsigned char *readbuf;
unsigned int keepAliveInterval;
char ping_outstanding;
int fail_count;
int isconnected;
struct MessageHandlers
{
const char* topicFilter;
void (*fp) (MessageData*);
} messageHandlers[MAX_MESSAGE_HANDLERS]; // Message handlers are indexed by subscription topic
void (*defaultMessageHandler) (MessageData*);
Network* ipstack;
Timer ping_timer;
};
typedef struct _MQTTClient MQTTClient;
int MQTTConnect(MQTTClient* c, MQTTPacket_connectData* options);
int MQTTPublish(MQTTClient* c, const char* topic, MQTTMessage* message);
int MQTTSubscribe(MQTTClient* c, const char* topic, enum QoS qos, messageHandler handler);
int MQTTUnsubscribe(MQTTClient* c, const char* topic);
int MQTTDisconnect(MQTTClient* c);
int MQTTYield(MQTTClient* c, int timeout_ms);
void NewMQTTClient(MQTTClient*, Network*, unsigned int, unsigned char*, size_t, unsigned char*, size_t);
#define DefaultClient {0, 0, 0, 0, NULL, NULL, 0, 0, 0}
#endif