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