Program to send NTP data to MQTT broker
Fork of MQTT by
MQTTAsync.h@22:aadb79d29330, 2014-04-30 (annotated)
- Committer:
- icraggs
- Date:
- Wed Apr 30 13:03:45 2014 +0000
- Revision:
- 22:aadb79d29330
- Parent:
- 21:e918525e529d
- Child:
- 23:05fc7de97d4a
Documentation updates
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
icraggs | 20:cad3d54d7ecf | 1 | /******************************************************************************* |
icraggs | 20:cad3d54d7ecf | 2 | * Copyright (c) 2014 IBM Corp. |
icraggs | 20:cad3d54d7ecf | 3 | * |
icraggs | 20:cad3d54d7ecf | 4 | * All rights reserved. This program and the accompanying materials |
icraggs | 20:cad3d54d7ecf | 5 | * are made available under the terms of the Eclipse Public License v1.0 |
icraggs | 20:cad3d54d7ecf | 6 | * and Eclipse Distribution License v1.0 which accompany this distribution. |
icraggs | 20:cad3d54d7ecf | 7 | * |
icraggs | 20:cad3d54d7ecf | 8 | * The Eclipse Public License is available at |
icraggs | 20:cad3d54d7ecf | 9 | * http://www.eclipse.org/legal/epl-v10.html |
icraggs | 20:cad3d54d7ecf | 10 | * and the Eclipse Distribution License is available at |
icraggs | 20:cad3d54d7ecf | 11 | * http://www.eclipse.org/org/documents/edl-v10.php. |
icraggs | 20:cad3d54d7ecf | 12 | * |
icraggs | 20:cad3d54d7ecf | 13 | * Contributors: |
icraggs | 20:cad3d54d7ecf | 14 | * Ian Craggs - initial API and implementation and/or initial documentation |
icraggs | 20:cad3d54d7ecf | 15 | *******************************************************************************/ |
icraggs | 20:cad3d54d7ecf | 16 | |
icraggs | 21:e918525e529d | 17 | #if !defined(MQTTASYNC_H) |
icraggs | 21:e918525e529d | 18 | #define MQTTASYNC_H |
icraggs | 20:cad3d54d7ecf | 19 | |
icraggs | 20:cad3d54d7ecf | 20 | #include "FP.h" |
icraggs | 20:cad3d54d7ecf | 21 | #include "MQTTPacket.h" |
icraggs | 20:cad3d54d7ecf | 22 | #include "stdio.h" |
icraggs | 20:cad3d54d7ecf | 23 | |
icraggs | 20:cad3d54d7ecf | 24 | namespace MQTT |
icraggs | 20:cad3d54d7ecf | 25 | { |
icraggs | 20:cad3d54d7ecf | 26 | |
icraggs | 20:cad3d54d7ecf | 27 | |
icraggs | 20:cad3d54d7ecf | 28 | enum QoS { QOS0, QOS1, QOS2 }; |
icraggs | 20:cad3d54d7ecf | 29 | |
icraggs | 20:cad3d54d7ecf | 30 | |
icraggs | 20:cad3d54d7ecf | 31 | struct Message |
icraggs | 20:cad3d54d7ecf | 32 | { |
icraggs | 20:cad3d54d7ecf | 33 | enum QoS qos; |
icraggs | 20:cad3d54d7ecf | 34 | bool retained; |
icraggs | 20:cad3d54d7ecf | 35 | bool dup; |
icraggs | 20:cad3d54d7ecf | 36 | unsigned short id; |
icraggs | 20:cad3d54d7ecf | 37 | void *payload; |
icraggs | 20:cad3d54d7ecf | 38 | size_t payloadlen; |
icraggs | 20:cad3d54d7ecf | 39 | }; |
icraggs | 20:cad3d54d7ecf | 40 | |
icraggs | 20:cad3d54d7ecf | 41 | |
icraggs | 20:cad3d54d7ecf | 42 | class PacketId |
icraggs | 20:cad3d54d7ecf | 43 | { |
icraggs | 20:cad3d54d7ecf | 44 | public: |
icraggs | 20:cad3d54d7ecf | 45 | PacketId(); |
icraggs | 20:cad3d54d7ecf | 46 | |
icraggs | 20:cad3d54d7ecf | 47 | int getNext(); |
icraggs | 20:cad3d54d7ecf | 48 | |
icraggs | 20:cad3d54d7ecf | 49 | private: |
icraggs | 20:cad3d54d7ecf | 50 | static const int MAX_PACKET_ID = 65535; |
icraggs | 20:cad3d54d7ecf | 51 | int next; |
icraggs | 20:cad3d54d7ecf | 52 | }; |
icraggs | 20:cad3d54d7ecf | 53 | |
icraggs | 20:cad3d54d7ecf | 54 | typedef void (*messageHandler)(Message*); |
icraggs | 20:cad3d54d7ecf | 55 | |
icraggs | 20:cad3d54d7ecf | 56 | typedef struct limits |
icraggs | 20:cad3d54d7ecf | 57 | { |
icraggs | 20:cad3d54d7ecf | 58 | int MAX_MQTT_PACKET_SIZE; // |
icraggs | 20:cad3d54d7ecf | 59 | int MAX_MESSAGE_HANDLERS; // each subscription requires a message handler |
icraggs | 20:cad3d54d7ecf | 60 | int MAX_CONCURRENT_OPERATIONS; // each command which runs concurrently can have a result handler, when we are in multi-threaded mode |
icraggs | 21:e918525e529d | 61 | int command_timeout_ms; |
icraggs | 20:cad3d54d7ecf | 62 | |
icraggs | 20:cad3d54d7ecf | 63 | limits() |
icraggs | 20:cad3d54d7ecf | 64 | { |
icraggs | 20:cad3d54d7ecf | 65 | MAX_MQTT_PACKET_SIZE = 100; |
icraggs | 20:cad3d54d7ecf | 66 | MAX_MESSAGE_HANDLERS = 5; |
icraggs | 20:cad3d54d7ecf | 67 | MAX_CONCURRENT_OPERATIONS = 1; // 1 indicates single-threaded mode - set to >1 for multithreaded mode |
icraggs | 21:e918525e529d | 68 | command_timeout_ms = 30000; |
icraggs | 20:cad3d54d7ecf | 69 | } |
icraggs | 20:cad3d54d7ecf | 70 | } Limits; |
icraggs | 20:cad3d54d7ecf | 71 | |
icraggs | 22:aadb79d29330 | 72 | |
icraggs | 22:aadb79d29330 | 73 | /** |
icraggs | 22:aadb79d29330 | 74 | * @class Async |
icraggs | 22:aadb79d29330 | 75 | * @brief non-blocking, threaded MQTT client API |
icraggs | 22:aadb79d29330 | 76 | * @param Network a network class which supports send, receive |
icraggs | 22:aadb79d29330 | 77 | * @param Timer a timer class with the methods: |
icraggs | 22:aadb79d29330 | 78 | */ |
icraggs | 21:e918525e529d | 79 | template<class Network, class Timer, class Thread, class Mutex> class Async |
icraggs | 20:cad3d54d7ecf | 80 | { |
icraggs | 20:cad3d54d7ecf | 81 | |
icraggs | 20:cad3d54d7ecf | 82 | public: |
icraggs | 20:cad3d54d7ecf | 83 | |
icraggs | 20:cad3d54d7ecf | 84 | struct Result |
icraggs | 20:cad3d54d7ecf | 85 | { |
icraggs | 20:cad3d54d7ecf | 86 | /* success or failure result data */ |
icraggs | 21:e918525e529d | 87 | Async<Network, Timer, Thread, Mutex>* client; |
icraggs | 21:e918525e529d | 88 | int rc; |
icraggs | 20:cad3d54d7ecf | 89 | }; |
icraggs | 20:cad3d54d7ecf | 90 | |
icraggs | 20:cad3d54d7ecf | 91 | typedef void (*resultHandler)(Result*); |
icraggs | 20:cad3d54d7ecf | 92 | |
icraggs | 21:e918525e529d | 93 | Async(Network* network, const Limits limits = Limits()); |
icraggs | 21:e918525e529d | 94 | |
icraggs | 21:e918525e529d | 95 | typedef struct |
icraggs | 21:e918525e529d | 96 | { |
icraggs | 21:e918525e529d | 97 | Async* client; |
icraggs | 21:e918525e529d | 98 | Network* network; |
icraggs | 21:e918525e529d | 99 | } connectionLostInfo; |
icraggs | 21:e918525e529d | 100 | |
icraggs | 21:e918525e529d | 101 | typedef int (*connectionLostHandlers)(connectionLostInfo*); |
icraggs | 21:e918525e529d | 102 | |
icraggs | 21:e918525e529d | 103 | /** Set the connection lost callback - called whenever the connection is lost and we should be connected |
icraggs | 21:e918525e529d | 104 | * @param clh - pointer to the callback function |
icraggs | 21:e918525e529d | 105 | */ |
icraggs | 21:e918525e529d | 106 | void setConnectionLostHandler(connectionLostHandlers clh) |
icraggs | 21:e918525e529d | 107 | { |
icraggs | 21:e918525e529d | 108 | connectionLostHandler.attach(clh); |
icraggs | 21:e918525e529d | 109 | } |
icraggs | 21:e918525e529d | 110 | |
icraggs | 21:e918525e529d | 111 | /** Set the default message handling callback - used for any message which does not match a subscription message handler |
icraggs | 21:e918525e529d | 112 | * @param mh - pointer to the callback function |
icraggs | 21:e918525e529d | 113 | */ |
icraggs | 21:e918525e529d | 114 | void setDefaultMessageHandler(messageHandler mh) |
icraggs | 21:e918525e529d | 115 | { |
icraggs | 21:e918525e529d | 116 | defaultMessageHandler.attach(mh); |
icraggs | 21:e918525e529d | 117 | } |
icraggs | 20:cad3d54d7ecf | 118 | |
icraggs | 21:e918525e529d | 119 | int connect(resultHandler fn, MQTTPacket_connectData* options = 0); |
icraggs | 20:cad3d54d7ecf | 120 | |
icraggs | 20:cad3d54d7ecf | 121 | template<class T> |
icraggs | 21:e918525e529d | 122 | int connect(void(T::*method)(Result *), MQTTPacket_connectData* options = 0, T *item = 0); // alternative to pass in pointer to member function |
icraggs | 20:cad3d54d7ecf | 123 | |
icraggs | 21:e918525e529d | 124 | int publish(resultHandler rh, const char* topic, Message* message); |
icraggs | 20:cad3d54d7ecf | 125 | |
icraggs | 21:e918525e529d | 126 | int subscribe(resultHandler rh, const char* topicFilter, enum QoS qos, messageHandler mh); |
icraggs | 20:cad3d54d7ecf | 127 | |
icraggs | 21:e918525e529d | 128 | int unsubscribe(resultHandler rh, const char* topicFilter); |
icraggs | 20:cad3d54d7ecf | 129 | |
icraggs | 21:e918525e529d | 130 | int disconnect(resultHandler rh); |
icraggs | 20:cad3d54d7ecf | 131 | |
icraggs | 20:cad3d54d7ecf | 132 | private: |
icraggs | 20:cad3d54d7ecf | 133 | |
icraggs | 20:cad3d54d7ecf | 134 | void run(void const *argument); |
icraggs | 20:cad3d54d7ecf | 135 | int cycle(int timeout); |
icraggs | 20:cad3d54d7ecf | 136 | int waitfor(int packet_type, Timer& atimer); |
icraggs | 20:cad3d54d7ecf | 137 | int keepalive(); |
icraggs | 20:cad3d54d7ecf | 138 | int findFreeOperation(); |
icraggs | 20:cad3d54d7ecf | 139 | |
icraggs | 20:cad3d54d7ecf | 140 | int decodePacket(int* value, int timeout); |
icraggs | 20:cad3d54d7ecf | 141 | int readPacket(int timeout); |
icraggs | 20:cad3d54d7ecf | 142 | int sendPacket(int length, int timeout); |
icraggs | 20:cad3d54d7ecf | 143 | int deliverMessage(MQTTString* topic, Message* message); |
icraggs | 20:cad3d54d7ecf | 144 | |
icraggs | 20:cad3d54d7ecf | 145 | Thread* thread; |
icraggs | 20:cad3d54d7ecf | 146 | Network* ipstack; |
icraggs | 20:cad3d54d7ecf | 147 | |
icraggs | 20:cad3d54d7ecf | 148 | Limits limits; |
icraggs | 20:cad3d54d7ecf | 149 | |
icraggs | 20:cad3d54d7ecf | 150 | char* buf; |
icraggs | 20:cad3d54d7ecf | 151 | char* readbuf; |
icraggs | 20:cad3d54d7ecf | 152 | |
icraggs | 20:cad3d54d7ecf | 153 | Timer ping_timer, connect_timer; |
icraggs | 20:cad3d54d7ecf | 154 | unsigned int keepAliveInterval; |
icraggs | 20:cad3d54d7ecf | 155 | bool ping_outstanding; |
icraggs | 20:cad3d54d7ecf | 156 | |
icraggs | 20:cad3d54d7ecf | 157 | PacketId packetid; |
icraggs | 20:cad3d54d7ecf | 158 | |
icraggs | 20:cad3d54d7ecf | 159 | typedef FP<void, Result*> resultHandlerFP; |
icraggs | 20:cad3d54d7ecf | 160 | resultHandlerFP connectHandler; |
icraggs | 20:cad3d54d7ecf | 161 | |
icraggs | 20:cad3d54d7ecf | 162 | typedef FP<void, Message*> messageHandlerFP; |
icraggs | 20:cad3d54d7ecf | 163 | struct MessageHandlers |
icraggs | 20:cad3d54d7ecf | 164 | { |
icraggs | 20:cad3d54d7ecf | 165 | const char* topic; |
icraggs | 20:cad3d54d7ecf | 166 | messageHandlerFP fp; |
icraggs | 20:cad3d54d7ecf | 167 | } *messageHandlers; // Message handlers are indexed by subscription topic |
icraggs | 20:cad3d54d7ecf | 168 | |
icraggs | 20:cad3d54d7ecf | 169 | // how many concurrent operations should we allow? Each one will require a function pointer |
icraggs | 20:cad3d54d7ecf | 170 | struct Operations |
icraggs | 20:cad3d54d7ecf | 171 | { |
icraggs | 20:cad3d54d7ecf | 172 | unsigned short id; |
icraggs | 20:cad3d54d7ecf | 173 | resultHandlerFP fp; |
icraggs | 20:cad3d54d7ecf | 174 | const char* topic; // if this is a publish, store topic name in case republishing is required |
icraggs | 20:cad3d54d7ecf | 175 | Message* message; // for publish, |
icraggs | 20:cad3d54d7ecf | 176 | Timer timer; // to check if the command has timed out |
icraggs | 20:cad3d54d7ecf | 177 | } *operations; // result handlers are indexed by packet ids |
icraggs | 20:cad3d54d7ecf | 178 | |
icraggs | 20:cad3d54d7ecf | 179 | static void threadfn(void* arg); |
icraggs | 21:e918525e529d | 180 | |
icraggs | 21:e918525e529d | 181 | messageHandlerFP defaultMessageHandler; |
icraggs | 21:e918525e529d | 182 | |
icraggs | 21:e918525e529d | 183 | typedef FP<int, connectionLostInfo*> connectionLostFP; |
icraggs | 21:e918525e529d | 184 | |
icraggs | 21:e918525e529d | 185 | connectionLostFP connectionLostHandler; |
icraggs | 20:cad3d54d7ecf | 186 | |
icraggs | 20:cad3d54d7ecf | 187 | }; |
icraggs | 20:cad3d54d7ecf | 188 | |
icraggs | 20:cad3d54d7ecf | 189 | } |
icraggs | 20:cad3d54d7ecf | 190 | |
icraggs | 20:cad3d54d7ecf | 191 | |
icraggs | 21:e918525e529d | 192 | template<class Network, class Timer, class Thread, class Mutex> void MQTT::Async<Network, Timer, Thread, Mutex>::threadfn(void* arg) |
icraggs | 20:cad3d54d7ecf | 193 | { |
icraggs | 21:e918525e529d | 194 | ((Async<Network, Timer, Thread, Mutex>*) arg)->run(NULL); |
icraggs | 20:cad3d54d7ecf | 195 | } |
icraggs | 20:cad3d54d7ecf | 196 | |
icraggs | 20:cad3d54d7ecf | 197 | |
icraggs | 21:e918525e529d | 198 | template<class Network, class Timer, class Thread, class Mutex> MQTT::Async<Network, Timer, Thread, Mutex>::Async(Network* network, Limits limits) : limits(limits), packetid() |
icraggs | 20:cad3d54d7ecf | 199 | { |
icraggs | 20:cad3d54d7ecf | 200 | this->thread = 0; |
icraggs | 20:cad3d54d7ecf | 201 | this->ipstack = network; |
icraggs | 20:cad3d54d7ecf | 202 | this->ping_timer = Timer(); |
icraggs | 20:cad3d54d7ecf | 203 | this->ping_outstanding = 0; |
icraggs | 20:cad3d54d7ecf | 204 | |
icraggs | 20:cad3d54d7ecf | 205 | // How to make these memory allocations portable? I was hoping to avoid the heap |
icraggs | 20:cad3d54d7ecf | 206 | buf = new char[limits.MAX_MQTT_PACKET_SIZE]; |
icraggs | 20:cad3d54d7ecf | 207 | readbuf = new char[limits.MAX_MQTT_PACKET_SIZE]; |
icraggs | 20:cad3d54d7ecf | 208 | this->operations = new struct Operations[limits.MAX_CONCURRENT_OPERATIONS]; |
icraggs | 20:cad3d54d7ecf | 209 | for (int i = 0; i < limits.MAX_CONCURRENT_OPERATIONS; ++i) |
icraggs | 20:cad3d54d7ecf | 210 | operations[i].id = 0; |
icraggs | 20:cad3d54d7ecf | 211 | this->messageHandlers = new struct MessageHandlers[limits.MAX_MESSAGE_HANDLERS]; |
icraggs | 20:cad3d54d7ecf | 212 | for (int i = 0; i < limits.MAX_MESSAGE_HANDLERS; ++i) |
icraggs | 20:cad3d54d7ecf | 213 | messageHandlers[i].topic = 0; |
icraggs | 20:cad3d54d7ecf | 214 | } |
icraggs | 20:cad3d54d7ecf | 215 | |
icraggs | 20:cad3d54d7ecf | 216 | |
icraggs | 21:e918525e529d | 217 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::sendPacket(int length, int timeout) |
icraggs | 20:cad3d54d7ecf | 218 | { |
icraggs | 20:cad3d54d7ecf | 219 | int sent = 0; |
icraggs | 20:cad3d54d7ecf | 220 | |
icraggs | 20:cad3d54d7ecf | 221 | while (sent < length) |
icraggs | 20:cad3d54d7ecf | 222 | sent += ipstack->write(&buf[sent], length, timeout); |
icraggs | 20:cad3d54d7ecf | 223 | if (sent == length) |
icraggs | 20:cad3d54d7ecf | 224 | ping_timer.countdown(this->keepAliveInterval); // record the fact that we have successfully sent the packet |
icraggs | 20:cad3d54d7ecf | 225 | return sent; |
icraggs | 20:cad3d54d7ecf | 226 | } |
icraggs | 20:cad3d54d7ecf | 227 | |
icraggs | 20:cad3d54d7ecf | 228 | |
icraggs | 21:e918525e529d | 229 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::decodePacket(int* value, int timeout) |
icraggs | 20:cad3d54d7ecf | 230 | { |
icraggs | 20:cad3d54d7ecf | 231 | char c; |
icraggs | 20:cad3d54d7ecf | 232 | int multiplier = 1; |
icraggs | 20:cad3d54d7ecf | 233 | int len = 0; |
icraggs | 20:cad3d54d7ecf | 234 | const int MAX_NO_OF_REMAINING_LENGTH_BYTES = 4; |
icraggs | 20:cad3d54d7ecf | 235 | |
icraggs | 20:cad3d54d7ecf | 236 | *value = 0; |
icraggs | 20:cad3d54d7ecf | 237 | do |
icraggs | 20:cad3d54d7ecf | 238 | { |
icraggs | 20:cad3d54d7ecf | 239 | int rc = MQTTPACKET_READ_ERROR; |
icraggs | 20:cad3d54d7ecf | 240 | |
icraggs | 20:cad3d54d7ecf | 241 | if (++len > MAX_NO_OF_REMAINING_LENGTH_BYTES) |
icraggs | 20:cad3d54d7ecf | 242 | { |
icraggs | 20:cad3d54d7ecf | 243 | rc = MQTTPACKET_READ_ERROR; /* bad data */ |
icraggs | 20:cad3d54d7ecf | 244 | goto exit; |
icraggs | 20:cad3d54d7ecf | 245 | } |
icraggs | 20:cad3d54d7ecf | 246 | rc = ipstack->read(&c, 1, timeout); |
icraggs | 20:cad3d54d7ecf | 247 | if (rc != 1) |
icraggs | 20:cad3d54d7ecf | 248 | goto exit; |
icraggs | 20:cad3d54d7ecf | 249 | *value += (c & 127) * multiplier; |
icraggs | 20:cad3d54d7ecf | 250 | multiplier *= 128; |
icraggs | 20:cad3d54d7ecf | 251 | } while ((c & 128) != 0); |
icraggs | 20:cad3d54d7ecf | 252 | exit: |
icraggs | 20:cad3d54d7ecf | 253 | return len; |
icraggs | 20:cad3d54d7ecf | 254 | } |
icraggs | 20:cad3d54d7ecf | 255 | |
icraggs | 20:cad3d54d7ecf | 256 | |
icraggs | 20:cad3d54d7ecf | 257 | /** |
icraggs | 20:cad3d54d7ecf | 258 | * If any read fails in this method, then we should disconnect from the network, as on reconnect |
icraggs | 20:cad3d54d7ecf | 259 | * the packets can be retried. |
icraggs | 20:cad3d54d7ecf | 260 | * @param timeout the max time to wait for the packet read to complete, in milliseconds |
icraggs | 20:cad3d54d7ecf | 261 | * @return the MQTT packet type, or -1 if none |
icraggs | 20:cad3d54d7ecf | 262 | */ |
icraggs | 21:e918525e529d | 263 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::readPacket(int timeout) |
icraggs | 20:cad3d54d7ecf | 264 | { |
icraggs | 20:cad3d54d7ecf | 265 | int rc = -1; |
icraggs | 20:cad3d54d7ecf | 266 | MQTTHeader header = {0}; |
icraggs | 20:cad3d54d7ecf | 267 | int len = 0; |
icraggs | 20:cad3d54d7ecf | 268 | int rem_len = 0; |
icraggs | 20:cad3d54d7ecf | 269 | |
icraggs | 20:cad3d54d7ecf | 270 | /* 1. read the header byte. This has the packet type in it */ |
icraggs | 20:cad3d54d7ecf | 271 | if (ipstack->read(readbuf, 1, timeout) != 1) |
icraggs | 20:cad3d54d7ecf | 272 | goto exit; |
icraggs | 20:cad3d54d7ecf | 273 | |
icraggs | 20:cad3d54d7ecf | 274 | len = 1; |
icraggs | 20:cad3d54d7ecf | 275 | /* 2. read the remaining length. This is variable in itself */ |
icraggs | 20:cad3d54d7ecf | 276 | decodePacket(&rem_len, timeout); |
icraggs | 20:cad3d54d7ecf | 277 | len += MQTTPacket_encode(readbuf + 1, rem_len); /* put the original remaining length back into the buffer */ |
icraggs | 20:cad3d54d7ecf | 278 | |
icraggs | 20:cad3d54d7ecf | 279 | /* 3. read the rest of the buffer using a callback to supply the rest of the data */ |
icraggs | 20:cad3d54d7ecf | 280 | if (ipstack->read(readbuf + len, rem_len, timeout) != rem_len) |
icraggs | 20:cad3d54d7ecf | 281 | goto exit; |
icraggs | 20:cad3d54d7ecf | 282 | |
icraggs | 20:cad3d54d7ecf | 283 | header.byte = readbuf[0]; |
icraggs | 20:cad3d54d7ecf | 284 | rc = header.bits.type; |
icraggs | 20:cad3d54d7ecf | 285 | exit: |
icraggs | 20:cad3d54d7ecf | 286 | return rc; |
icraggs | 20:cad3d54d7ecf | 287 | } |
icraggs | 20:cad3d54d7ecf | 288 | |
icraggs | 20:cad3d54d7ecf | 289 | |
icraggs | 21:e918525e529d | 290 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::deliverMessage(MQTTString* topic, Message* message) |
icraggs | 20:cad3d54d7ecf | 291 | { |
icraggs | 20:cad3d54d7ecf | 292 | int rc = -1; |
icraggs | 20:cad3d54d7ecf | 293 | |
icraggs | 20:cad3d54d7ecf | 294 | // we have to find the right message handler - indexed by topic |
icraggs | 20:cad3d54d7ecf | 295 | for (int i = 0; i < limits.MAX_MESSAGE_HANDLERS; ++i) |
icraggs | 20:cad3d54d7ecf | 296 | { |
icraggs | 20:cad3d54d7ecf | 297 | if (messageHandlers[i].topic != 0 && MQTTPacket_equals(topic, (char*)messageHandlers[i].topic)) |
icraggs | 20:cad3d54d7ecf | 298 | { |
icraggs | 20:cad3d54d7ecf | 299 | messageHandlers[i].fp(message); |
icraggs | 20:cad3d54d7ecf | 300 | rc = 0; |
icraggs | 20:cad3d54d7ecf | 301 | break; |
icraggs | 20:cad3d54d7ecf | 302 | } |
icraggs | 20:cad3d54d7ecf | 303 | } |
icraggs | 20:cad3d54d7ecf | 304 | |
icraggs | 20:cad3d54d7ecf | 305 | return rc; |
icraggs | 20:cad3d54d7ecf | 306 | } |
icraggs | 20:cad3d54d7ecf | 307 | |
icraggs | 20:cad3d54d7ecf | 308 | |
icraggs | 20:cad3d54d7ecf | 309 | |
icraggs | 21:e918525e529d | 310 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::cycle(int timeout) |
icraggs | 20:cad3d54d7ecf | 311 | { |
icraggs | 20:cad3d54d7ecf | 312 | /* get one piece of work off the wire and one pass through */ |
icraggs | 20:cad3d54d7ecf | 313 | |
icraggs | 20:cad3d54d7ecf | 314 | // read the socket, see what work is due |
icraggs | 20:cad3d54d7ecf | 315 | int packet_type = readPacket(timeout); |
icraggs | 20:cad3d54d7ecf | 316 | |
icraggs | 20:cad3d54d7ecf | 317 | int len, rc; |
icraggs | 20:cad3d54d7ecf | 318 | switch (packet_type) |
icraggs | 20:cad3d54d7ecf | 319 | { |
icraggs | 20:cad3d54d7ecf | 320 | case CONNACK: |
icraggs | 20:cad3d54d7ecf | 321 | if (this->thread) |
icraggs | 20:cad3d54d7ecf | 322 | { |
icraggs | 20:cad3d54d7ecf | 323 | Result res = {this, 0}; |
icraggs | 21:e918525e529d | 324 | if (MQTTDeserialize_connack(&res.rc, readbuf, limits.MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 325 | ; |
icraggs | 20:cad3d54d7ecf | 326 | connectHandler(&res); |
icraggs | 20:cad3d54d7ecf | 327 | connectHandler.detach(); // only invoke the callback once |
icraggs | 20:cad3d54d7ecf | 328 | } |
icraggs | 20:cad3d54d7ecf | 329 | break; |
icraggs | 20:cad3d54d7ecf | 330 | case PUBACK: |
icraggs | 20:cad3d54d7ecf | 331 | if (this->thread) |
icraggs | 20:cad3d54d7ecf | 332 | ; //call resultHandler |
icraggs | 20:cad3d54d7ecf | 333 | case SUBACK: |
icraggs | 20:cad3d54d7ecf | 334 | break; |
icraggs | 20:cad3d54d7ecf | 335 | case PUBLISH: |
icraggs | 20:cad3d54d7ecf | 336 | MQTTString topicName; |
icraggs | 20:cad3d54d7ecf | 337 | Message msg; |
icraggs | 20:cad3d54d7ecf | 338 | rc = MQTTDeserialize_publish((int*)&msg.dup, (int*)&msg.qos, (int*)&msg.retained, (int*)&msg.id, &topicName, |
icraggs | 20:cad3d54d7ecf | 339 | (char**)&msg.payload, (int*)&msg.payloadlen, readbuf, limits.MAX_MQTT_PACKET_SIZE);; |
icraggs | 20:cad3d54d7ecf | 340 | if (msg.qos == QOS0) |
icraggs | 20:cad3d54d7ecf | 341 | deliverMessage(&topicName, &msg); |
icraggs | 20:cad3d54d7ecf | 342 | break; |
icraggs | 20:cad3d54d7ecf | 343 | case PUBREC: |
icraggs | 20:cad3d54d7ecf | 344 | int type, dup, mypacketid; |
icraggs | 20:cad3d54d7ecf | 345 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, limits.MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 346 | ; |
icraggs | 20:cad3d54d7ecf | 347 | // must lock this access against the application thread, if we are multi-threaded |
icraggs | 20:cad3d54d7ecf | 348 | len = MQTTSerialize_ack(buf, limits.MAX_MQTT_PACKET_SIZE, PUBREL, 0, mypacketid); |
icraggs | 20:cad3d54d7ecf | 349 | rc = sendPacket(len, timeout); // send the PUBREL packet |
icraggs | 20:cad3d54d7ecf | 350 | if (rc != len) |
icraggs | 20:cad3d54d7ecf | 351 | goto exit; // there was a problem |
icraggs | 20:cad3d54d7ecf | 352 | |
icraggs | 20:cad3d54d7ecf | 353 | break; |
icraggs | 20:cad3d54d7ecf | 354 | case PUBCOMP: |
icraggs | 20:cad3d54d7ecf | 355 | break; |
icraggs | 20:cad3d54d7ecf | 356 | case PINGRESP: |
icraggs | 20:cad3d54d7ecf | 357 | ping_outstanding = false; |
icraggs | 20:cad3d54d7ecf | 358 | break; |
icraggs | 20:cad3d54d7ecf | 359 | } |
icraggs | 20:cad3d54d7ecf | 360 | keepalive(); |
icraggs | 20:cad3d54d7ecf | 361 | exit: |
icraggs | 20:cad3d54d7ecf | 362 | return packet_type; |
icraggs | 20:cad3d54d7ecf | 363 | } |
icraggs | 20:cad3d54d7ecf | 364 | |
icraggs | 20:cad3d54d7ecf | 365 | |
icraggs | 21:e918525e529d | 366 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::keepalive() |
icraggs | 20:cad3d54d7ecf | 367 | { |
icraggs | 20:cad3d54d7ecf | 368 | int rc = 0; |
icraggs | 20:cad3d54d7ecf | 369 | |
icraggs | 20:cad3d54d7ecf | 370 | if (keepAliveInterval == 0) |
icraggs | 20:cad3d54d7ecf | 371 | goto exit; |
icraggs | 20:cad3d54d7ecf | 372 | |
icraggs | 20:cad3d54d7ecf | 373 | if (ping_timer.expired()) |
icraggs | 20:cad3d54d7ecf | 374 | { |
icraggs | 20:cad3d54d7ecf | 375 | if (ping_outstanding) |
icraggs | 20:cad3d54d7ecf | 376 | rc = -1; |
icraggs | 20:cad3d54d7ecf | 377 | else |
icraggs | 20:cad3d54d7ecf | 378 | { |
icraggs | 20:cad3d54d7ecf | 379 | int len = MQTTSerialize_pingreq(buf, limits.MAX_MQTT_PACKET_SIZE); |
icraggs | 20:cad3d54d7ecf | 380 | rc = sendPacket(len, 1000); // send the ping packet |
icraggs | 20:cad3d54d7ecf | 381 | if (rc != len) |
icraggs | 20:cad3d54d7ecf | 382 | rc = -1; // indicate there's a problem |
icraggs | 20:cad3d54d7ecf | 383 | else |
icraggs | 20:cad3d54d7ecf | 384 | ping_outstanding = true; |
icraggs | 20:cad3d54d7ecf | 385 | } |
icraggs | 20:cad3d54d7ecf | 386 | } |
icraggs | 20:cad3d54d7ecf | 387 | |
icraggs | 20:cad3d54d7ecf | 388 | exit: |
icraggs | 20:cad3d54d7ecf | 389 | return rc; |
icraggs | 20:cad3d54d7ecf | 390 | } |
icraggs | 20:cad3d54d7ecf | 391 | |
icraggs | 20:cad3d54d7ecf | 392 | |
icraggs | 21:e918525e529d | 393 | template<class Network, class Timer, class Thread, class Mutex> void MQTT::Async<Network, Timer, Thread, Mutex>::run(void const *argument) |
icraggs | 20:cad3d54d7ecf | 394 | { |
icraggs | 20:cad3d54d7ecf | 395 | while (true) |
icraggs | 20:cad3d54d7ecf | 396 | cycle(ping_timer.left_ms()); |
icraggs | 20:cad3d54d7ecf | 397 | } |
icraggs | 20:cad3d54d7ecf | 398 | |
icraggs | 20:cad3d54d7ecf | 399 | |
icraggs | 20:cad3d54d7ecf | 400 | // only used in single-threaded mode where one command at a time is in process |
icraggs | 21:e918525e529d | 401 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::waitfor(int packet_type, Timer& atimer) |
icraggs | 20:cad3d54d7ecf | 402 | { |
icraggs | 20:cad3d54d7ecf | 403 | int rc = -1; |
icraggs | 20:cad3d54d7ecf | 404 | |
icraggs | 20:cad3d54d7ecf | 405 | do |
icraggs | 20:cad3d54d7ecf | 406 | { |
icraggs | 20:cad3d54d7ecf | 407 | if (atimer.expired()) |
icraggs | 20:cad3d54d7ecf | 408 | break; // we timed out |
icraggs | 20:cad3d54d7ecf | 409 | } |
icraggs | 20:cad3d54d7ecf | 410 | while ((rc = cycle(atimer.left_ms())) != packet_type); |
icraggs | 20:cad3d54d7ecf | 411 | |
icraggs | 20:cad3d54d7ecf | 412 | return rc; |
icraggs | 20:cad3d54d7ecf | 413 | } |
icraggs | 20:cad3d54d7ecf | 414 | |
icraggs | 20:cad3d54d7ecf | 415 | |
icraggs | 21:e918525e529d | 416 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::connect(resultHandler resultHandler, MQTTPacket_connectData* options) |
icraggs | 20:cad3d54d7ecf | 417 | { |
icraggs | 21:e918525e529d | 418 | connect_timer.countdown(limits.command_timeout_ms); |
icraggs | 20:cad3d54d7ecf | 419 | |
icraggs | 20:cad3d54d7ecf | 420 | MQTTPacket_connectData default_options = MQTTPacket_connectData_initializer; |
icraggs | 20:cad3d54d7ecf | 421 | if (options == 0) |
icraggs | 20:cad3d54d7ecf | 422 | options = &default_options; // set default options if none were supplied |
icraggs | 20:cad3d54d7ecf | 423 | |
icraggs | 20:cad3d54d7ecf | 424 | this->keepAliveInterval = options->keepAliveInterval; |
icraggs | 20:cad3d54d7ecf | 425 | ping_timer.countdown(this->keepAliveInterval); |
icraggs | 20:cad3d54d7ecf | 426 | int len = MQTTSerialize_connect(buf, limits.MAX_MQTT_PACKET_SIZE, options); |
icraggs | 20:cad3d54d7ecf | 427 | int rc = sendPacket(len, connect_timer.left_ms()); // send the connect packet |
icraggs | 20:cad3d54d7ecf | 428 | if (rc != len) |
icraggs | 20:cad3d54d7ecf | 429 | goto exit; // there was a problem |
icraggs | 20:cad3d54d7ecf | 430 | |
icraggs | 20:cad3d54d7ecf | 431 | if (resultHandler == 0) // wait until the connack is received |
icraggs | 20:cad3d54d7ecf | 432 | { |
icraggs | 20:cad3d54d7ecf | 433 | // this will be a blocking call, wait for the connack |
icraggs | 20:cad3d54d7ecf | 434 | if (waitfor(CONNACK, connect_timer) == CONNACK) |
icraggs | 20:cad3d54d7ecf | 435 | { |
icraggs | 20:cad3d54d7ecf | 436 | int connack_rc = -1; |
icraggs | 20:cad3d54d7ecf | 437 | if (MQTTDeserialize_connack(&connack_rc, readbuf, limits.MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 438 | rc = connack_rc; |
icraggs | 20:cad3d54d7ecf | 439 | } |
icraggs | 20:cad3d54d7ecf | 440 | } |
icraggs | 20:cad3d54d7ecf | 441 | else |
icraggs | 20:cad3d54d7ecf | 442 | { |
icraggs | 20:cad3d54d7ecf | 443 | // set connect response callback function |
icraggs | 20:cad3d54d7ecf | 444 | connectHandler.attach(resultHandler); |
icraggs | 20:cad3d54d7ecf | 445 | |
icraggs | 20:cad3d54d7ecf | 446 | // start background thread |
icraggs | 21:e918525e529d | 447 | this->thread = new Thread((void (*)(void const *argument))&MQTT::Async<Network, Timer, Thread, Mutex>::threadfn, (void*)this); |
icraggs | 20:cad3d54d7ecf | 448 | } |
icraggs | 20:cad3d54d7ecf | 449 | |
icraggs | 20:cad3d54d7ecf | 450 | exit: |
icraggs | 20:cad3d54d7ecf | 451 | return rc; |
icraggs | 20:cad3d54d7ecf | 452 | } |
icraggs | 20:cad3d54d7ecf | 453 | |
icraggs | 20:cad3d54d7ecf | 454 | |
icraggs | 21:e918525e529d | 455 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::findFreeOperation() |
icraggs | 20:cad3d54d7ecf | 456 | { |
icraggs | 20:cad3d54d7ecf | 457 | int found = -1; |
icraggs | 20:cad3d54d7ecf | 458 | for (int i = 0; i < limits.MAX_CONCURRENT_OPERATIONS; ++i) |
icraggs | 20:cad3d54d7ecf | 459 | { |
icraggs | 20:cad3d54d7ecf | 460 | if (operations[i].id == 0) |
icraggs | 20:cad3d54d7ecf | 461 | { |
icraggs | 20:cad3d54d7ecf | 462 | found = i; |
icraggs | 20:cad3d54d7ecf | 463 | break; |
icraggs | 20:cad3d54d7ecf | 464 | } |
icraggs | 20:cad3d54d7ecf | 465 | } |
icraggs | 20:cad3d54d7ecf | 466 | return found; |
icraggs | 20:cad3d54d7ecf | 467 | } |
icraggs | 20:cad3d54d7ecf | 468 | |
icraggs | 20:cad3d54d7ecf | 469 | |
icraggs | 21:e918525e529d | 470 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::subscribe(resultHandler resultHandler, const char* topicFilter, enum QoS qos, messageHandler messageHandler) |
icraggs | 20:cad3d54d7ecf | 471 | { |
icraggs | 20:cad3d54d7ecf | 472 | int index = 0; |
icraggs | 20:cad3d54d7ecf | 473 | if (this->thread) |
icraggs | 20:cad3d54d7ecf | 474 | index = findFreeOperation(); |
icraggs | 20:cad3d54d7ecf | 475 | Timer& atimer = operations[index].timer; |
icraggs | 20:cad3d54d7ecf | 476 | |
icraggs | 21:e918525e529d | 477 | atimer.countdown(limits.command_timeout_ms); |
icraggs | 20:cad3d54d7ecf | 478 | MQTTString topic = {(char*)topicFilter, 0, 0}; |
icraggs | 20:cad3d54d7ecf | 479 | |
icraggs | 20:cad3d54d7ecf | 480 | int len = MQTTSerialize_subscribe(buf, limits.MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic, (int*)&qos); |
icraggs | 20:cad3d54d7ecf | 481 | int rc = sendPacket(len, atimer.left_ms()); // send the subscribe packet |
icraggs | 20:cad3d54d7ecf | 482 | if (rc != len) |
icraggs | 20:cad3d54d7ecf | 483 | goto exit; // there was a problem |
icraggs | 20:cad3d54d7ecf | 484 | |
icraggs | 20:cad3d54d7ecf | 485 | /* wait for suback */ |
icraggs | 20:cad3d54d7ecf | 486 | if (resultHandler == 0) |
icraggs | 20:cad3d54d7ecf | 487 | { |
icraggs | 20:cad3d54d7ecf | 488 | // this will block |
icraggs | 20:cad3d54d7ecf | 489 | if (waitfor(SUBACK, atimer) == SUBACK) |
icraggs | 20:cad3d54d7ecf | 490 | { |
icraggs | 20:cad3d54d7ecf | 491 | int count = 0, grantedQoS = -1, mypacketid; |
icraggs | 20:cad3d54d7ecf | 492 | if (MQTTDeserialize_suback(&mypacketid, 1, &count, &grantedQoS, readbuf, limits.MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 493 | rc = grantedQoS; // 0, 1, 2 or 0x80 |
icraggs | 20:cad3d54d7ecf | 494 | if (rc != 0x80) |
icraggs | 20:cad3d54d7ecf | 495 | { |
icraggs | 20:cad3d54d7ecf | 496 | for (int i = 0; i < limits.MAX_MESSAGE_HANDLERS; ++i) |
icraggs | 20:cad3d54d7ecf | 497 | { |
icraggs | 20:cad3d54d7ecf | 498 | if (messageHandlers[i].topic == 0) |
icraggs | 20:cad3d54d7ecf | 499 | { |
icraggs | 20:cad3d54d7ecf | 500 | messageHandlers[i].topic = topicFilter; |
icraggs | 20:cad3d54d7ecf | 501 | messageHandlers[i].fp.attach(messageHandler); |
icraggs | 20:cad3d54d7ecf | 502 | rc = 0; |
icraggs | 20:cad3d54d7ecf | 503 | break; |
icraggs | 20:cad3d54d7ecf | 504 | } |
icraggs | 20:cad3d54d7ecf | 505 | } |
icraggs | 20:cad3d54d7ecf | 506 | } |
icraggs | 20:cad3d54d7ecf | 507 | } |
icraggs | 20:cad3d54d7ecf | 508 | } |
icraggs | 20:cad3d54d7ecf | 509 | else |
icraggs | 20:cad3d54d7ecf | 510 | { |
icraggs | 20:cad3d54d7ecf | 511 | // set subscribe response callback function |
icraggs | 20:cad3d54d7ecf | 512 | |
icraggs | 20:cad3d54d7ecf | 513 | } |
icraggs | 20:cad3d54d7ecf | 514 | |
icraggs | 20:cad3d54d7ecf | 515 | exit: |
icraggs | 20:cad3d54d7ecf | 516 | return rc; |
icraggs | 20:cad3d54d7ecf | 517 | } |
icraggs | 20:cad3d54d7ecf | 518 | |
icraggs | 20:cad3d54d7ecf | 519 | |
icraggs | 21:e918525e529d | 520 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::unsubscribe(resultHandler resultHandler, const char* topicFilter) |
icraggs | 20:cad3d54d7ecf | 521 | { |
icraggs | 20:cad3d54d7ecf | 522 | int index = 0; |
icraggs | 20:cad3d54d7ecf | 523 | if (this->thread) |
icraggs | 20:cad3d54d7ecf | 524 | index = findFreeOperation(); |
icraggs | 20:cad3d54d7ecf | 525 | Timer& atimer = operations[index].timer; |
icraggs | 20:cad3d54d7ecf | 526 | |
icraggs | 21:e918525e529d | 527 | atimer.countdown(limits.command_timeout_ms); |
icraggs | 20:cad3d54d7ecf | 528 | MQTTString topic = {(char*)topicFilter, 0, 0}; |
icraggs | 20:cad3d54d7ecf | 529 | |
icraggs | 20:cad3d54d7ecf | 530 | int len = MQTTSerialize_unsubscribe(buf, limits.MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic); |
icraggs | 20:cad3d54d7ecf | 531 | int rc = sendPacket(len, atimer.left_ms()); // send the subscribe packet |
icraggs | 20:cad3d54d7ecf | 532 | if (rc != len) |
icraggs | 20:cad3d54d7ecf | 533 | goto exit; // there was a problem |
icraggs | 20:cad3d54d7ecf | 534 | |
icraggs | 21:e918525e529d | 535 | // set unsubscribe response callback function |
icraggs | 20:cad3d54d7ecf | 536 | |
icraggs | 20:cad3d54d7ecf | 537 | |
icraggs | 20:cad3d54d7ecf | 538 | exit: |
icraggs | 20:cad3d54d7ecf | 539 | return rc; |
icraggs | 20:cad3d54d7ecf | 540 | } |
icraggs | 20:cad3d54d7ecf | 541 | |
icraggs | 20:cad3d54d7ecf | 542 | |
icraggs | 20:cad3d54d7ecf | 543 | |
icraggs | 21:e918525e529d | 544 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::publish(resultHandler resultHandler, const char* topicName, Message* message) |
icraggs | 20:cad3d54d7ecf | 545 | { |
icraggs | 20:cad3d54d7ecf | 546 | int index = 0; |
icraggs | 20:cad3d54d7ecf | 547 | if (this->thread) |
icraggs | 20:cad3d54d7ecf | 548 | index = findFreeOperation(); |
icraggs | 20:cad3d54d7ecf | 549 | Timer& atimer = operations[index].timer; |
icraggs | 20:cad3d54d7ecf | 550 | |
icraggs | 21:e918525e529d | 551 | atimer.countdown(limits.command_timeout_ms); |
icraggs | 20:cad3d54d7ecf | 552 | MQTTString topic = {(char*)topicName, 0, 0}; |
icraggs | 20:cad3d54d7ecf | 553 | |
icraggs | 20:cad3d54d7ecf | 554 | if (message->qos == QOS1 || message->qos == QOS2) |
icraggs | 20:cad3d54d7ecf | 555 | message->id = packetid.getNext(); |
icraggs | 20:cad3d54d7ecf | 556 | |
icraggs | 20:cad3d54d7ecf | 557 | int len = MQTTSerialize_publish(buf, limits.MAX_MQTT_PACKET_SIZE, 0, message->qos, message->retained, message->id, topic, (char*)message->payload, message->payloadlen); |
icraggs | 20:cad3d54d7ecf | 558 | int rc = sendPacket(len, atimer.left_ms()); // send the subscribe packet |
icraggs | 20:cad3d54d7ecf | 559 | if (rc != len) |
icraggs | 20:cad3d54d7ecf | 560 | goto exit; // there was a problem |
icraggs | 20:cad3d54d7ecf | 561 | |
icraggs | 20:cad3d54d7ecf | 562 | /* wait for acks */ |
icraggs | 20:cad3d54d7ecf | 563 | if (resultHandler == 0) |
icraggs | 20:cad3d54d7ecf | 564 | { |
icraggs | 20:cad3d54d7ecf | 565 | if (message->qos == QOS1) |
icraggs | 20:cad3d54d7ecf | 566 | { |
icraggs | 20:cad3d54d7ecf | 567 | if (waitfor(PUBACK, atimer) == PUBACK) |
icraggs | 20:cad3d54d7ecf | 568 | { |
icraggs | 20:cad3d54d7ecf | 569 | int type, dup, mypacketid; |
icraggs | 20:cad3d54d7ecf | 570 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, limits.MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 571 | rc = 0; |
icraggs | 20:cad3d54d7ecf | 572 | } |
icraggs | 20:cad3d54d7ecf | 573 | } |
icraggs | 20:cad3d54d7ecf | 574 | else if (message->qos == QOS2) |
icraggs | 20:cad3d54d7ecf | 575 | { |
icraggs | 20:cad3d54d7ecf | 576 | if (waitfor(PUBCOMP, atimer) == PUBCOMP) |
icraggs | 20:cad3d54d7ecf | 577 | { |
icraggs | 20:cad3d54d7ecf | 578 | int type, dup, mypacketid; |
icraggs | 20:cad3d54d7ecf | 579 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, limits.MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 580 | rc = 0; |
icraggs | 20:cad3d54d7ecf | 581 | } |
icraggs | 20:cad3d54d7ecf | 582 | |
icraggs | 20:cad3d54d7ecf | 583 | } |
icraggs | 20:cad3d54d7ecf | 584 | } |
icraggs | 20:cad3d54d7ecf | 585 | else |
icraggs | 20:cad3d54d7ecf | 586 | { |
icraggs | 20:cad3d54d7ecf | 587 | // set publish response callback function |
icraggs | 20:cad3d54d7ecf | 588 | |
icraggs | 20:cad3d54d7ecf | 589 | } |
icraggs | 20:cad3d54d7ecf | 590 | |
icraggs | 20:cad3d54d7ecf | 591 | exit: |
icraggs | 20:cad3d54d7ecf | 592 | return rc; |
icraggs | 20:cad3d54d7ecf | 593 | } |
icraggs | 20:cad3d54d7ecf | 594 | |
icraggs | 20:cad3d54d7ecf | 595 | |
icraggs | 21:e918525e529d | 596 | template<class Network, class Timer, class Thread, class Mutex> int MQTT::Async<Network, Timer, Thread, Mutex>::disconnect(resultHandler resultHandler) |
icraggs | 21:e918525e529d | 597 | { |
icraggs | 21:e918525e529d | 598 | Timer timer = Timer(limits.command_timeout_ms); // we might wait for incomplete incoming publishes to complete |
icraggs | 21:e918525e529d | 599 | int len = MQTTSerialize_disconnect(buf, limits.MAX_MQTT_PACKET_SIZE); |
icraggs | 21:e918525e529d | 600 | int rc = sendPacket(len, timer.left_ms()); // send the disconnect packet |
icraggs | 21:e918525e529d | 601 | |
icraggs | 21:e918525e529d | 602 | return (rc == len) ? 0 : -1; |
icraggs | 21:e918525e529d | 603 | } |
icraggs | 21:e918525e529d | 604 | |
icraggs | 21:e918525e529d | 605 | |
icraggs | 21:e918525e529d | 606 | |
icraggs | 20:cad3d54d7ecf | 607 | #endif |