Mark Lambe / MQTT

Asavie IoT Connect MQTT cloud service connectors

Dependencies:   MQTTPacket FP

Dependents:   AsavieIoTConnectCloudConnector

MQTTClient.h@61:150b06e72bf8, 2019-05-17 (annotated)

Committer:
Markl
Date:
Fri May 17 16:32:08 2019 +0000
Revision:
61:150b06e72bf8
Parent:
60:fccb353e53aa 
REV1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
icraggs 6:4d312a49200b 1 /*******************************************************************************
icraggs 53:15b5a280d22d 2 * Copyright (c) 2014, 2017 IBM Corp.
sam_grove 0:fe461e4d7afe 3 *
icraggs 6:4d312a49200b 4 * All rights reserved. This program and the accompanying materials
icraggs 6:4d312a49200b 5 * are made available under the terms of the Eclipse Public License v1.0
icraggs 6:4d312a49200b 6 * and Eclipse Distribution License v1.0 which accompany this distribution.
sam_grove 0:fe461e4d7afe 7 *
icraggs 6:4d312a49200b 8 * The Eclipse Public License is available at
icraggs 6:4d312a49200b 9 * http://www.eclipse.org/legal/epl-v10.html
icraggs 6:4d312a49200b 10 * and the Eclipse Distribution License is available at
icraggs 6:4d312a49200b 11 * http://www.eclipse.org/org/documents/edl-v10.php.
sam_grove 0:fe461e4d7afe 12 *
icraggs 6:4d312a49200b 13 * Contributors:
icraggs 6:4d312a49200b 14 * Ian Craggs - initial API and implementation and/or initial documentation
icraggs 46:e335fcc1a663 15 * Ian Craggs - fix for bug 458512 - QoS 2 messages
icraggs 46:e335fcc1a663 16 * Ian Craggs - fix for bug 460389 - send loop uses wrong length
icraggs 46:e335fcc1a663 17 * Ian Craggs - fix for bug 464169 - clearing subscriptions
icraggs 46:e335fcc1a663 18 * Ian Craggs - fix for bug 464551 - enums and ints can be different size
icraggs 53:15b5a280d22d 19 * Mark Sonnentag - fix for bug 475204 - inefficient instantiation of Timer
icraggs 53:15b5a280d22d 20 * Ian Craggs - fix for bug 475749 - packetid modified twice
icraggs 53:15b5a280d22d 21 * Ian Craggs - add ability to set message handler separately #6
icraggs 6:4d312a49200b 22 *******************************************************************************/
sam_grove 0:fe461e4d7afe 23
icraggs 2:dcfdd2abfe71 24 #if !defined(MQTTCLIENT_H)
icraggs 2:dcfdd2abfe71 25 #define MQTTCLIENT_H
icraggs 2:dcfdd2abfe71 26
lamell 60:fccb353e53aa 27 #include <string.h>
icraggs 34:e18a166198df 28 #include "FP.h"
icraggs 3:dbff6b768d28 29 #include "MQTTPacket.h"
icraggs 53:15b5a280d22d 30 #include <stdio.h>
icraggs 43:21da1f744243 31 #include "MQTTLogging.h"
icraggs 43:21da1f744243 32
icraggs 43:21da1f744243 33 #if !defined(MQTTCLIENT_QOS1)
icraggs 43:21da1f744243 34 #define MQTTCLIENT_QOS1 1
icraggs 43:21da1f744243 35 #endif
icraggs 43:21da1f744243 36 #if !defined(MQTTCLIENT_QOS2)
icraggs 43:21da1f744243 37 #define MQTTCLIENT_QOS2 0
icraggs 43:21da1f744243 38 #endif
icraggs 2:dcfdd2abfe71 39
icraggs 3:dbff6b768d28 40 namespace MQTT
icraggs 3:dbff6b768d28 41 {
icraggs 3:dbff6b768d28 42
icraggs 2:dcfdd2abfe71 43
icraggs 2:dcfdd2abfe71 44 enum QoS { QOS0, QOS1, QOS2 };
sam_grove 0:fe461e4d7afe 45
icraggs 31:a51dd239b78e 46 // all failure return codes must be negative
icraggs 23:05fc7de97d4a 47 enum returnCode { BUFFER_OVERFLOW = -2, FAILURE = -1, SUCCESS = 0 };
icraggs 23:05fc7de97d4a 48
icraggs 2:dcfdd2abfe71 49
icraggs 3:dbff6b768d28 50 struct Message
icraggs 2:dcfdd2abfe71 51 {
icraggs 2:dcfdd2abfe71 52 enum QoS qos;
icraggs 2:dcfdd2abfe71 53 bool retained;
icraggs 2:dcfdd2abfe71 54 bool dup;
Ian Craggs 12:cc7f2d62a393 55 unsigned short id;
icraggs 2:dcfdd2abfe71 56 void *payload;
icraggs 2:dcfdd2abfe71 57 size_t payloadlen;
sam_grove 0:fe461e4d7afe 58 };
sam_grove 0:fe461e4d7afe 59
icraggs 4:4ef00243708e 60
icraggs 20:cad3d54d7ecf 61 struct MessageData
icraggs 20:cad3d54d7ecf 62 {
icraggs 31:a51dd239b78e 63 MessageData(MQTTString &aTopicName, struct Message &aMessage) : message(aMessage), topicName(aTopicName)
icraggs 37:e3d64f9b986c 64 { }
icraggs 43:21da1f744243 65
icraggs 31:a51dd239b78e 66 struct Message &message;
icraggs 31:a51dd239b78e 67 MQTTString &topicName;
icraggs 20:cad3d54d7ecf 68 };
icraggs 20:cad3d54d7ecf 69
icraggs 20:cad3d54d7ecf 70
icraggs 53:15b5a280d22d 71 struct connackData
icraggs 53:15b5a280d22d 72 {
icraggs 53:15b5a280d22d 73 int rc;
icraggs 53:15b5a280d22d 74 bool sessionPresent;
icraggs 53:15b5a280d22d 75 };
icraggs 53:15b5a280d22d 76
icraggs 53:15b5a280d22d 77
icraggs 53:15b5a280d22d 78 struct subackData
icraggs 53:15b5a280d22d 79 {
icraggs 53:15b5a280d22d 80 int grantedQoS;
icraggs 53:15b5a280d22d 81 };
icraggs 53:15b5a280d22d 82
icraggs 53:15b5a280d22d 83
icraggs 9:01b8cc7d94cc 84 class PacketId
icraggs 9:01b8cc7d94cc 85 {
icraggs 9:01b8cc7d94cc 86 public:
icraggs 23:05fc7de97d4a 87 PacketId()
icraggs 23:05fc7de97d4a 88 {
icraggs 23:05fc7de97d4a 89 next = 0;
icraggs 23:05fc7de97d4a 90 }
icraggs 43:21da1f744243 91
icraggs 23:05fc7de97d4a 92 int getNext()
icraggs 23:05fc7de97d4a 93 {
icraggs 53:15b5a280d22d 94 return next = (next == MAX_PACKET_ID) ? 1 : next + 1;
icraggs 23:05fc7de97d4a 95 }
icraggs 43:21da1f744243 96
icraggs 9:01b8cc7d94cc 97 private:
icraggs 9:01b8cc7d94cc 98 static const int MAX_PACKET_ID = 65535;
icraggs 9:01b8cc7d94cc 99 int next;
icraggs 9:01b8cc7d94cc 100 };
icraggs 31:a51dd239b78e 101
icraggs 31:a51dd239b78e 102
icraggs 21:e918525e529d 103 /**
icraggs 21:e918525e529d 104 * @class Client
icraggs 22:aadb79d29330 105 * @brief blocking, non-threaded MQTT client API
icraggs 43:21da1f744243 106 *
icraggs 23:05fc7de97d4a 107 * This version of the API blocks on all method calls, until they are complete. This means that only one
icraggs 43:21da1f744243 108 * MQTT request can be in process at any one time.
icraggs 21:e918525e529d 109 * @param Network a network class which supports send, receive
icraggs 43:21da1f744243 110 * @param Timer a timer class with the methods:
icraggs 43:21da1f744243 111 */
icraggs 31:a51dd239b78e 112 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE = 100, int MAX_MESSAGE_HANDLERS = 5>
icraggs 31:a51dd239b78e 113 class Client
icraggs 2:dcfdd2abfe71 114 {
icraggs 43:21da1f744243 115
icraggs 22:aadb79d29330 116 public:
icraggs 43:21da1f744243 117
icraggs 31:a51dd239b78e 118 typedef void (*messageHandler)(MessageData&);
icraggs 23:05fc7de97d4a 119
icraggs 23:05fc7de97d4a 120 /** Construct the client
icraggs 23:05fc7de97d4a 121 * @param network - pointer to an instance of the Network class - must be connected to the endpoint
icraggs 23:05fc7de97d4a 122 * before calling MQTT connect
icraggs 23:05fc7de97d4a 123 * @param limits an instance of the Limit class - to alter limits as required
icraggs 23:05fc7de97d4a 124 */
icraggs 43:21da1f744243 125 Client(Network& network, unsigned int command_timeout_ms = 30000);
icraggs 43:21da1f744243 126
icraggs 20:cad3d54d7ecf 127 /** Set the default message handling callback - used for any message which does not match a subscription message handler
icraggs 53:15b5a280d22d 128 * @param mh - pointer to the callback function. Set to 0 to remove.
icraggs 20:cad3d54d7ecf 129 */
icraggs 20:cad3d54d7ecf 130 void setDefaultMessageHandler(messageHandler mh)
icraggs 20:cad3d54d7ecf 131 {
icraggs 53:15b5a280d22d 132 if (mh != 0)
icraggs 53:15b5a280d22d 133 defaultMessageHandler.attach(mh);
icraggs 53:15b5a280d22d 134 else
icraggs 53:15b5a280d22d 135 defaultMessageHandler.detach();
icraggs 20:cad3d54d7ecf 136 }
icraggs 42:f5beda831651 137
icraggs 53:15b5a280d22d 138 /** Set a message handling callback. This can be used outside of the the subscribe method.
icraggs 53:15b5a280d22d 139 * @param topicFilter - a topic pattern which can include wildcards
icraggs 53:15b5a280d22d 140 * @param mh - pointer to the callback function. If 0, removes the callback if any
icraggs 53:15b5a280d22d 141 */
icraggs 53:15b5a280d22d 142 int setMessageHandler(const char* topicFilter, messageHandler mh);
icraggs 53:15b5a280d22d 143
icraggs 43:21da1f744243 144 /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack
icraggs 43:21da1f744243 145 * The nework object must be connected to the network endpoint before calling this
icraggs 43:21da1f744243 146 * Default connect options are used
icraggs 43:21da1f744243 147 * @return success code -
icraggs 43:21da1f744243 148 */
icraggs 43:21da1f744243 149 int connect();
icraggs 53:15b5a280d22d 150
icraggs 53:15b5a280d22d 151 /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack
icraggs 43:21da1f744243 152 * The nework object must be connected to the network endpoint before calling this
icraggs 20:cad3d54d7ecf 153 * @param options - connect options
icraggs 43:21da1f744243 154 * @return success code -
icraggs 43:21da1f744243 155 */
icraggs 43:21da1f744243 156 int connect(MQTTPacket_connectData& options);
icraggs 43:21da1f744243 157
icraggs 53:15b5a280d22d 158 /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack
icraggs 53:15b5a280d22d 159 * The nework object must be connected to the network endpoint before calling this
icraggs 53:15b5a280d22d 160 * @param options - connect options
icraggs 53:15b5a280d22d 161 * @param connackData - connack data to be returned
icraggs 53:15b5a280d22d 162 * @return success code -
icraggs 53:15b5a280d22d 163 */
icraggs 53:15b5a280d22d 164 int connect(MQTTPacket_connectData& options, connackData& data);
icraggs 53:15b5a280d22d 165
icraggs 20:cad3d54d7ecf 166 /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs
icraggs 20:cad3d54d7ecf 167 * @param topic - the topic to publish to
icraggs 20:cad3d54d7ecf 168 * @param message - the message to send
icraggs 43:21da1f744243 169 * @return success code -
icraggs 43:21da1f744243 170 */
icraggs 43:21da1f744243 171 int publish(const char* topicName, Message& message);
icraggs 53:15b5a280d22d 172
icraggs 43:21da1f744243 173 /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs
icraggs 43:21da1f744243 174 * @param topic - the topic to publish to
icraggs 43:21da1f744243 175 * @param payload - the data to send
icraggs 43:21da1f744243 176 * @param payloadlen - the length of the data
icraggs 43:21da1f744243 177 * @param qos - the QoS to send the publish at
icraggs 43:21da1f744243 178 * @param retained - whether the message should be retained
icraggs 43:21da1f744243 179 * @return success code -
icraggs 43:21da1f744243 180 */
icraggs 43:21da1f744243 181 int publish(const char* topicName, void* payload, size_t payloadlen, enum QoS qos = QOS0, bool retained = false);
icraggs 53:15b5a280d22d 182
icraggs 43:21da1f744243 183 /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs
icraggs 43:21da1f744243 184 * @param topic - the topic to publish to
icraggs 43:21da1f744243 185 * @param payload - the data to send
icraggs 43:21da1f744243 186 * @param payloadlen - the length of the data
icraggs 53:15b5a280d22d 187 * @param id - the packet id used - returned
icraggs 43:21da1f744243 188 * @param qos - the QoS to send the publish at
icraggs 43:21da1f744243 189 * @param retained - whether the message should be retained
icraggs 43:21da1f744243 190 * @return success code -
icraggs 43:21da1f744243 191 */
icraggs 43:21da1f744243 192 int publish(const char* topicName, void* payload, size_t payloadlen, unsigned short& id, enum QoS qos = QOS1, bool retained = false);
icraggs 43:21da1f744243 193
icraggs 20:cad3d54d7ecf 194 /** MQTT Subscribe - send an MQTT subscribe packet and wait for the suback
icraggs 20:cad3d54d7ecf 195 * @param topicFilter - a topic pattern which can include wildcards
icraggs 20:cad3d54d7ecf 196 * @param qos - the MQTT QoS to subscribe at
icraggs 20:cad3d54d7ecf 197 * @param mh - the callback function to be invoked when a message is received for this subscription
icraggs 43:21da1f744243 198 * @return success code -
icraggs 43:21da1f744243 199 */
icraggs 20:cad3d54d7ecf 200 int subscribe(const char* topicFilter, enum QoS qos, messageHandler mh);
icraggs 43:21da1f744243 201
icraggs 53:15b5a280d22d 202 /** MQTT Subscribe - send an MQTT subscribe packet and wait for the suback
icraggs 53:15b5a280d22d 203 * @param topicFilter - a topic pattern which can include wildcards
icraggs 53:15b5a280d22d 204 * @param qos - the MQTT QoS to subscribe at©
icraggs 53:15b5a280d22d 205 * @param mh - the callback function to be invoked when a message is received for this subscription
icraggs 53:15b5a280d22d 206 * @param
icraggs 53:15b5a280d22d 207 * @return success code -
icraggs 53:15b5a280d22d 208 */
icraggs 53:15b5a280d22d 209 int subscribe(const char* topicFilter, enum QoS qos, messageHandler mh, subackData &data);
icraggs 53:15b5a280d22d 210
icraggs 20:cad3d54d7ecf 211 /** MQTT Unsubscribe - send an MQTT unsubscribe packet and wait for the unsuback
icraggs 20:cad3d54d7ecf 212 * @param topicFilter - a topic pattern which can include wildcards
icraggs 43:21da1f744243 213 * @return success code -
icraggs 43:21da1f744243 214 */
icraggs 20:cad3d54d7ecf 215 int unsubscribe(const char* topicFilter);
icraggs 43:21da1f744243 216
icraggs 31:a51dd239b78e 217 /** MQTT Disconnect - send an MQTT disconnect packet, and clean up any state
icraggs 43:21da1f744243 218 * @return success code -
icraggs 20:cad3d54d7ecf 219 */
icraggs 20:cad3d54d7ecf 220 int disconnect();
icraggs 43:21da1f744243 221
icraggs 20:cad3d54d7ecf 222 /** A call to this API must be made within the keepAlive interval to keep the MQTT connection alive
icraggs 43:21da1f744243 223 * yield can be called if no other MQTT operation is needed. This will also allow messages to be
icraggs 20:cad3d54d7ecf 224 * received.
icraggs 23:05fc7de97d4a 225 * @param timeout_ms the time to wait, in milliseconds
icraggs 26:2658bb87c53d 226 * @return success code - on failure, this means the client has disconnected
icraggs 20:cad3d54d7ecf 227 */
icraggs 43:21da1f744243 228 int yield(unsigned long timeout_ms = 1000L);
icraggs 43:21da1f744243 229
icraggs 43:21da1f744243 230 /** Is the client connected?
icraggs 43:21da1f744243 231 * @return flag - is the client connected or not?
icraggs 43:21da1f744243 232 */
icraggs 43:21da1f744243 233 bool isConnected()
icraggs 43:21da1f744243 234 {
icraggs 43:21da1f744243 235 return isconnected;
icraggs 43:21da1f744243 236 }
icraggs 43:21da1f744243 237
icraggs 20:cad3d54d7ecf 238 private:
icraggs 20:cad3d54d7ecf 239
icraggs 53:15b5a280d22d 240 void closeSession();
icraggs 46:e335fcc1a663 241 void cleanSession();
icraggs 20:cad3d54d7ecf 242 int cycle(Timer& timer);
icraggs 20:cad3d54d7ecf 243 int waitfor(int packet_type, Timer& timer);
icraggs 20:cad3d54d7ecf 244 int keepalive();
icraggs 43:21da1f744243 245 int publish(int len, Timer& timer, enum QoS qos);
icraggs 2:dcfdd2abfe71 246
icraggs 3:dbff6b768d28 247 int decodePacket(int* value, int timeout);
icraggs 20:cad3d54d7ecf 248 int readPacket(Timer& timer);
icraggs 20:cad3d54d7ecf 249 int sendPacket(int length, Timer& timer);
icraggs 26:2658bb87c53d 250 int deliverMessage(MQTTString& topicName, Message& message);
icraggs 26:2658bb87c53d 251 bool isTopicMatched(char* topicFilter, MQTTString& topicName);
icraggs 43:21da1f744243 252
icraggs 23:05fc7de97d4a 253 Network& ipstack;
icraggs 43:21da1f744243 254 unsigned long command_timeout_ms;
icraggs 15:64a57183aa03 255
icraggs 43:21da1f744243 256 unsigned char sendbuf[MAX_MQTT_PACKET_SIZE];
icraggs 43:21da1f744243 257 unsigned char readbuf[MAX_MQTT_PACKET_SIZE];
icraggs 43:21da1f744243 258
icraggs 43:21da1f744243 259 Timer last_sent, last_received;
icraggs 15:64a57183aa03 260 unsigned int keepAliveInterval;
icraggs 20:cad3d54d7ecf 261 bool ping_outstanding;
icraggs 43:21da1f744243 262 bool cleansession;
icraggs 43:21da1f744243 263
icraggs 9:01b8cc7d94cc 264 PacketId packetid;
icraggs 43:21da1f744243 265
icraggs 16:91c2f9a144d4 266 struct MessageHandlers
icraggs 15:64a57183aa03 267 {
icraggs 26:2658bb87c53d 268 const char* topicFilter;
icraggs 31:a51dd239b78e 269 FP<void, MessageData&> fp;
icraggs 23:05fc7de97d4a 270 } messageHandlers[MAX_MESSAGE_HANDLERS]; // Message handlers are indexed by subscription topic
icraggs 43:21da1f744243 271
icraggs 31:a51dd239b78e 272 FP<void, MessageData&> defaultMessageHandler;
icraggs 43:21da1f744243 273
icraggs 26:2658bb87c53d 274 bool isconnected;
icraggs 43:21da1f744243 275
icraggs 43:21da1f744243 276 #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2
icraggs 43:21da1f744243 277 unsigned char pubbuf[MAX_MQTT_PACKET_SIZE]; // store the last publish for sending on reconnect
icraggs 43:21da1f744243 278 int inflightLen;
icraggs 43:21da1f744243 279 unsigned short inflightMsgid;
icraggs 43:21da1f744243 280 enum QoS inflightQoS;
icraggs 43:21da1f744243 281 #endif
icraggs 43:21da1f744243 282
icraggs 43:21da1f744243 283 #if MQTTCLIENT_QOS2
icraggs 43:21da1f744243 284 bool pubrel;
icraggs 43:21da1f744243 285 #if !defined(MAX_INCOMING_QOS2_MESSAGES)
icraggs 43:21da1f744243 286 #define MAX_INCOMING_QOS2_MESSAGES 10
icraggs 43:21da1f744243 287 #endif
icraggs 43:21da1f744243 288 unsigned short incomingQoS2messages[MAX_INCOMING_QOS2_MESSAGES];
icraggs 43:21da1f744243 289 bool isQoS2msgidFree(unsigned short id);
icraggs 43:21da1f744243 290 bool useQoS2msgid(unsigned short id);
icraggs 46:e335fcc1a663 291 void freeQoS2msgid(unsigned short id);
icraggs 31:a51dd239b78e 292 #endif
icraggs 28:8b2abe9bd814 293
sam_grove 0:fe461e4d7afe 294 };
sam_grove 0:fe461e4d7afe 295
icraggs 15:64a57183aa03 296 }
icraggs 15:64a57183aa03 297
icraggs 15:64a57183aa03 298
icraggs 43:21da1f744243 299 template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS>
icraggs 53:15b5a280d22d 300 void MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::cleanSession()
icraggs 46:e335fcc1a663 301 {
icraggs 46:e335fcc1a663 302 for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 46:e335fcc1a663 303 messageHandlers[i].topicFilter = 0;
icraggs 46:e335fcc1a663 304
icraggs 46:e335fcc1a663 305 #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2
icraggs 46:e335fcc1a663 306 inflightMsgid = 0;
icraggs 46:e335fcc1a663 307 inflightQoS = QOS0;
icraggs 46:e335fcc1a663 308 #endif
icraggs 46:e335fcc1a663 309
icraggs 46:e335fcc1a663 310 #if MQTTCLIENT_QOS2
icraggs 46:e335fcc1a663 311 pubrel = false;
icraggs 46:e335fcc1a663 312 for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i)
icraggs 46:e335fcc1a663 313 incomingQoS2messages[i] = 0;
icraggs 46:e335fcc1a663 314 #endif
icraggs 46:e335fcc1a663 315 }
icraggs 46:e335fcc1a663 316
icraggs 46:e335fcc1a663 317
icraggs 46:e335fcc1a663 318 template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS>
icraggs 53:15b5a280d22d 319 void MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::closeSession()
icraggs 53:15b5a280d22d 320 {
icraggs 53:15b5a280d22d 321 ping_outstanding = false;
icraggs 53:15b5a280d22d 322 isconnected = false;
icraggs 53:15b5a280d22d 323 if (cleansession)
icraggs 53:15b5a280d22d 324 cleanSession();
icraggs 53:15b5a280d22d 325 }
icraggs 53:15b5a280d22d 326
icraggs 53:15b5a280d22d 327
icraggs 53:15b5a280d22d 328 template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS>
icraggs 23:05fc7de97d4a 329 MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::Client(Network& network, unsigned int command_timeout_ms) : ipstack(network), packetid()
icraggs 15:64a57183aa03 330 {
icraggs 43:21da1f744243 331 this->command_timeout_ms = command_timeout_ms;
icraggs 53:15b5a280d22d 332 cleansession = true;
icraggs 53:15b5a280d22d 333 closeSession();
icraggs 46:e335fcc1a663 334 }
icraggs 43:21da1f744243 335
icraggs 43:21da1f744243 336
icraggs 43:21da1f744243 337 #if MQTTCLIENT_QOS2
icraggs 43:21da1f744243 338 template<class Network, class Timer, int a, int b>
icraggs 43:21da1f744243 339 bool MQTT::Client<Network, Timer, a, b>::isQoS2msgidFree(unsigned short id)
icraggs 43:21da1f744243 340 {
icraggs 43:21da1f744243 341 for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i)
icraggs 43:21da1f744243 342 {
icraggs 43:21da1f744243 343 if (incomingQoS2messages[i] == id)
icraggs 43:21da1f744243 344 return false;
icraggs 43:21da1f744243 345 }
icraggs 43:21da1f744243 346 return true;
icraggs 11:db15da110a37 347 }
icraggs 11:db15da110a37 348
icraggs 11:db15da110a37 349
icraggs 43:21da1f744243 350 template<class Network, class Timer, int a, int b>
icraggs 43:21da1f744243 351 bool MQTT::Client<Network, Timer, a, b>::useQoS2msgid(unsigned short id)
icraggs 43:21da1f744243 352 {
icraggs 43:21da1f744243 353 for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i)
icraggs 43:21da1f744243 354 {
icraggs 43:21da1f744243 355 if (incomingQoS2messages[i] == 0)
icraggs 43:21da1f744243 356 {
icraggs 43:21da1f744243 357 incomingQoS2messages[i] = id;
icraggs 43:21da1f744243 358 return true;
icraggs 43:21da1f744243 359 }
icraggs 43:21da1f744243 360 }
icraggs 43:21da1f744243 361 return false;
icraggs 43:21da1f744243 362 }
icraggs 46:e335fcc1a663 363
icraggs 46:e335fcc1a663 364
icraggs 46:e335fcc1a663 365 template<class Network, class Timer, int a, int b>
icraggs 46:e335fcc1a663 366 void MQTT::Client<Network, Timer, a, b>::freeQoS2msgid(unsigned short id)
icraggs 46:e335fcc1a663 367 {
icraggs 46:e335fcc1a663 368 for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i)
icraggs 46:e335fcc1a663 369 {
icraggs 46:e335fcc1a663 370 if (incomingQoS2messages[i] == id)
icraggs 46:e335fcc1a663 371 {
icraggs 46:e335fcc1a663 372 incomingQoS2messages[i] = 0;
icraggs 46:e335fcc1a663 373 return;
icraggs 46:e335fcc1a663 374 }
icraggs 46:e335fcc1a663 375 }
icraggs 46:e335fcc1a663 376 }
icraggs 43:21da1f744243 377 #endif
icraggs 43:21da1f744243 378
icraggs 43:21da1f744243 379
icraggs 43:21da1f744243 380 template<class Network, class Timer, int a, int b>
icraggs 23:05fc7de97d4a 381 int MQTT::Client<Network, Timer, a, b>::sendPacket(int length, Timer& timer)
icraggs 8:c46930bd6c82 382 {
icraggs 43:21da1f744243 383 int rc = FAILURE,
icraggs 23:05fc7de97d4a 384 sent = 0;
icraggs 43:21da1f744243 385
Ian Craggs 57:3513ee54ebb4 386 while (sent < length)
icraggs 23:05fc7de97d4a 387 {
icraggs 46:e335fcc1a663 388 rc = ipstack.write(&sendbuf[sent], length - sent, timer.left_ms());
icraggs 26:2658bb87c53d 389 if (rc < 0) // there was an error writing the data
icraggs 26:2658bb87c53d 390 break;
icraggs 26:2658bb87c53d 391 sent += rc;
Ian Craggs 57:3513ee54ebb4 392 if (timer.expired()) // only check expiry after at least one attempt to write
Ian Craggs 57:3513ee54ebb4 393 break;
Ian Craggs 57:3513ee54ebb4 394 }
icraggs 20:cad3d54d7ecf 395 if (sent == length)
icraggs 23:05fc7de97d4a 396 {
icraggs 43:21da1f744243 397 if (this->keepAliveInterval > 0)
icraggs 43:21da1f744243 398 last_sent.countdown(this->keepAliveInterval); // record the fact that we have successfully sent the packet
icraggs 23:05fc7de97d4a 399 rc = SUCCESS;
icraggs 23:05fc7de97d4a 400 }
icraggs 23:05fc7de97d4a 401 else
icraggs 23:05fc7de97d4a 402 rc = FAILURE;
icraggs 53:15b5a280d22d 403
icraggs 43:21da1f744243 404 #if defined(MQTT_DEBUG)
icraggs 46:e335fcc1a663 405 char printbuf[150];
icraggs 56:71ae1a773b64 406 DEBUG("Rc %d from sending packet %s\r\n", rc,
icraggs 54:ff9e5c4b52d0 407 MQTTFormat_toServerString(printbuf, sizeof(printbuf), sendbuf, length));
icraggs 43:21da1f744243 408 #endif
icraggs 23:05fc7de97d4a 409 return rc;
icraggs 8:c46930bd6c82 410 }
icraggs 8:c46930bd6c82 411
icraggs 8:c46930bd6c82 412
icraggs 43:21da1f744243 413 template<class Network, class Timer, int a, int b>
icraggs 26:2658bb87c53d 414 int MQTT::Client<Network, Timer, a, b>::decodePacket(int* value, int timeout)
icraggs 8:c46930bd6c82 415 {
icraggs 36:2f1ada427e56 416 unsigned char c;
icraggs 8:c46930bd6c82 417 int multiplier = 1;
icraggs 8:c46930bd6c82 418 int len = 0;
icraggs 20:cad3d54d7ecf 419 const int MAX_NO_OF_REMAINING_LENGTH_BYTES = 4;
icraggs 8:c46930bd6c82 420
icraggs 8:c46930bd6c82 421 *value = 0;
icraggs 8:c46930bd6c82 422 do
icraggs 8:c46930bd6c82 423 {
icraggs 8:c46930bd6c82 424 int rc = MQTTPACKET_READ_ERROR;
icraggs 8:c46930bd6c82 425
icraggs 8:c46930bd6c82 426 if (++len > MAX_NO_OF_REMAINING_LENGTH_BYTES)
icraggs 8:c46930bd6c82 427 {
icraggs 8:c46930bd6c82 428 rc = MQTTPACKET_READ_ERROR; /* bad data */
icraggs 8:c46930bd6c82 429 goto exit;
icraggs 8:c46930bd6c82 430 }
icraggs 23:05fc7de97d4a 431 rc = ipstack.read(&c, 1, timeout);
icraggs 8:c46930bd6c82 432 if (rc != 1)
icraggs 8:c46930bd6c82 433 goto exit;
icraggs 8:c46930bd6c82 434 *value += (c & 127) * multiplier;
icraggs 8:c46930bd6c82 435 multiplier *= 128;
icraggs 8:c46930bd6c82 436 } while ((c & 128) != 0);
icraggs 8:c46930bd6c82 437 exit:
icraggs 8:c46930bd6c82 438 return len;
icraggs 8:c46930bd6c82 439 }
icraggs 8:c46930bd6c82 440
icraggs 8:c46930bd6c82 441
icraggs 8:c46930bd6c82 442 /**
icraggs 8:c46930bd6c82 443 * If any read fails in this method, then we should disconnect from the network, as on reconnect
icraggs 43:21da1f744243 444 * the packets can be retried.
icraggs 8:c46930bd6c82 445 * @param timeout the max time to wait for the packet read to complete, in milliseconds
icraggs 53:15b5a280d22d 446 * @return the MQTT packet type, 0 if none, -1 if error
icraggs 8:c46930bd6c82 447 */
icraggs 46:e335fcc1a663 448 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 46:e335fcc1a663 449 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::readPacket(Timer& timer)
icraggs 8:c46930bd6c82 450 {
icraggs 26:2658bb87c53d 451 int rc = FAILURE;
icraggs 8:c46930bd6c82 452 MQTTHeader header = {0};
icraggs 8:c46930bd6c82 453 int len = 0;
icraggs 8:c46930bd6c82 454 int rem_len = 0;
icraggs 8:c46930bd6c82 455
icraggs 8:c46930bd6c82 456 /* 1. read the header byte. This has the packet type in it */
icraggs 53:15b5a280d22d 457 rc = ipstack.read(readbuf, 1, timer.left_ms());
icraggs 53:15b5a280d22d 458 if (rc != 1)
icraggs 8:c46930bd6c82 459 goto exit;
icraggs 8:c46930bd6c82 460
icraggs 8:c46930bd6c82 461 len = 1;
icraggs 8:c46930bd6c82 462 /* 2. read the remaining length. This is variable in itself */
icraggs 20:cad3d54d7ecf 463 decodePacket(&rem_len, timer.left_ms());
icraggs 43:21da1f744243 464 len += MQTTPacket_encode(readbuf + 1, rem_len); /* put the original remaining length into the buffer */
icraggs 8:c46930bd6c82 465
icraggs 46:e335fcc1a663 466 if (rem_len > (MAX_MQTT_PACKET_SIZE - len))
icraggs 46:e335fcc1a663 467 {
icraggs 46:e335fcc1a663 468 rc = BUFFER_OVERFLOW;
icraggs 46:e335fcc1a663 469 goto exit;
icraggs 46:e335fcc1a663 470 }
icraggs 46:e335fcc1a663 471
icraggs 8:c46930bd6c82 472 /* 3. read the rest of the buffer using a callback to supply the rest of the data */
icraggs 43:21da1f744243 473 if (rem_len > 0 && (ipstack.read(readbuf + len, rem_len, timer.left_ms()) != rem_len))
icraggs 8:c46930bd6c82 474 goto exit;
icraggs 8:c46930bd6c82 475
icraggs 8:c46930bd6c82 476 header.byte = readbuf[0];
icraggs 8:c46930bd6c82 477 rc = header.bits.type;
icraggs 43:21da1f744243 478 if (this->keepAliveInterval > 0)
icraggs 43:21da1f744243 479 last_received.countdown(this->keepAliveInterval); // record the fact that we have successfully received a packet
icraggs 8:c46930bd6c82 480 exit:
icraggs 53:15b5a280d22d 481
icraggs 43:21da1f744243 482 #if defined(MQTT_DEBUG)
icraggs 46:e335fcc1a663 483 if (rc >= 0)
icraggs 46:e335fcc1a663 484 {
icraggs 46:e335fcc1a663 485 char printbuf[50];
icraggs 56:71ae1a773b64 486 DEBUG("Rc %d receiving packet %s\r\n", rc,
icraggs 53:15b5a280d22d 487 MQTTFormat_toClientString(printbuf, sizeof(printbuf), readbuf, len));
icraggs 46:e335fcc1a663 488 }
icraggs 43:21da1f744243 489 #endif
icraggs 8:c46930bd6c82 490 return rc;
icraggs 3:dbff6b768d28 491 }
icraggs 3:dbff6b768d28 492
icraggs 8:c46930bd6c82 493
icraggs 26:2658bb87c53d 494 // assume topic filter and name is in correct format
icraggs 26:2658bb87c53d 495 // # can only be at end
icraggs 26:2658bb87c53d 496 // + and # can only be next to separator
icraggs 43:21da1f744243 497 template<class Network, class Timer, int a, int b>
icraggs 26:2658bb87c53d 498 bool MQTT::Client<Network, Timer, a, b>::isTopicMatched(char* topicFilter, MQTTString& topicName)
icraggs 26:2658bb87c53d 499 {
icraggs 26:2658bb87c53d 500 char* curf = topicFilter;
icraggs 26:2658bb87c53d 501 char* curn = topicName.lenstring.data;
icraggs 26:2658bb87c53d 502 char* curn_end = curn + topicName.lenstring.len;
icraggs 43:21da1f744243 503
icraggs 26:2658bb87c53d 504 while (*curf && curn < curn_end)
icraggs 26:2658bb87c53d 505 {
icraggs 26:2658bb87c53d 506 if (*curn == '/' && *curf != '/')
icraggs 26:2658bb87c53d 507 break;
icraggs 26:2658bb87c53d 508 if (*curf != '+' && *curf != '#' && *curf != *curn)
icraggs 26:2658bb87c53d 509 break;
icraggs 26:2658bb87c53d 510 if (*curf == '+')
icraggs 26:2658bb87c53d 511 { // skip until we meet the next separator, or end of string
icraggs 26:2658bb87c53d 512 char* nextpos = curn + 1;
icraggs 26:2658bb87c53d 513 while (nextpos < curn_end && *nextpos != '/')
icraggs 26:2658bb87c53d 514 nextpos = ++curn + 1;
icraggs 26:2658bb87c53d 515 }
icraggs 26:2658bb87c53d 516 else if (*curf == '#')
icraggs 26:2658bb87c53d 517 curn = curn_end - 1; // skip until end of string
icraggs 26:2658bb87c53d 518 curf++;
icraggs 26:2658bb87c53d 519 curn++;
icraggs 26:2658bb87c53d 520 };
icraggs 43:21da1f744243 521
icraggs 26:2658bb87c53d 522 return (curn == curn_end) && (*curf == '\0');
icraggs 26:2658bb87c53d 523 }
icraggs 26:2658bb87c53d 524
icraggs 26:2658bb87c53d 525
icraggs 26:2658bb87c53d 526
icraggs 43:21da1f744243 527 template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS>
icraggs 26:2658bb87c53d 528 int MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::deliverMessage(MQTTString& topicName, Message& message)
icraggs 15:64a57183aa03 529 {
icraggs 26:2658bb87c53d 530 int rc = FAILURE;
icraggs 20:cad3d54d7ecf 531
icraggs 20:cad3d54d7ecf 532 // we have to find the right message handler - indexed by topic
icraggs 23:05fc7de97d4a 533 for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 20:cad3d54d7ecf 534 {
icraggs 26:2658bb87c53d 535 if (messageHandlers[i].topicFilter != 0 && (MQTTPacket_equals(&topicName, (char*)messageHandlers[i].topicFilter) ||
icraggs 26:2658bb87c53d 536 isTopicMatched((char*)messageHandlers[i].topicFilter, topicName)))
icraggs 20:cad3d54d7ecf 537 {
icraggs 26:2658bb87c53d 538 if (messageHandlers[i].fp.attached())
icraggs 26:2658bb87c53d 539 {
icraggs 31:a51dd239b78e 540 MessageData md(topicName, message);
icraggs 31:a51dd239b78e 541 messageHandlers[i].fp(md);
icraggs 26:2658bb87c53d 542 rc = SUCCESS;
icraggs 26:2658bb87c53d 543 }
icraggs 20:cad3d54d7ecf 544 }
icraggs 20:cad3d54d7ecf 545 }
icraggs 43:21da1f744243 546
icraggs 43:21da1f744243 547 if (rc == FAILURE && defaultMessageHandler.attached())
icraggs 26:2658bb87c53d 548 {
icraggs 31:a51dd239b78e 549 MessageData md(topicName, message);
icraggs 31:a51dd239b78e 550 defaultMessageHandler(md);
icraggs 26:2658bb87c53d 551 rc = SUCCESS;
icraggs 43:21da1f744243 552 }
icraggs 43:21da1f744243 553
icraggs 20:cad3d54d7ecf 554 return rc;
icraggs 15:64a57183aa03 555 }
icraggs 15:64a57183aa03 556
icraggs 15:64a57183aa03 557
icraggs 20:cad3d54d7ecf 558
icraggs 43:21da1f744243 559 template<class Network, class Timer, int a, int b>
icraggs 43:21da1f744243 560 int MQTT::Client<Network, Timer, a, b>::yield(unsigned long timeout_ms)
icraggs 20:cad3d54d7ecf 561 {
icraggs 26:2658bb87c53d 562 int rc = SUCCESS;
icraggs 53:15b5a280d22d 563 Timer timer;
icraggs 43:21da1f744243 564
icraggs 23:05fc7de97d4a 565 timer.countdown_ms(timeout_ms);
icraggs 20:cad3d54d7ecf 566 while (!timer.expired())
icraggs 26:2658bb87c53d 567 {
icraggs 46:e335fcc1a663 568 if (cycle(timer) < 0)
icraggs 26:2658bb87c53d 569 {
icraggs 26:2658bb87c53d 570 rc = FAILURE;
icraggs 26:2658bb87c53d 571 break;
icraggs 26:2658bb87c53d 572 }
icraggs 26:2658bb87c53d 573 }
icraggs 43:21da1f744243 574
icraggs 26:2658bb87c53d 575 return rc;
icraggs 20:cad3d54d7ecf 576 }
icraggs 20:cad3d54d7ecf 577
icraggs 20:cad3d54d7ecf 578
icraggs 43:21da1f744243 579 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 23:05fc7de97d4a 580 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::cycle(Timer& timer)
icraggs 8:c46930bd6c82 581 {
icraggs 53:15b5a280d22d 582 // get one piece of work off the wire and one pass through
icraggs 26:2658bb87c53d 583 int len = 0,
icraggs 26:2658bb87c53d 584 rc = SUCCESS;
icraggs 28:8b2abe9bd814 585
icraggs 53:15b5a280d22d 586 int packet_type = readPacket(timer); // read the socket, see what work is due
icraggs 53:15b5a280d22d 587
icraggs 8:c46930bd6c82 588 switch (packet_type)
icraggs 8:c46930bd6c82 589 {
icraggs 53:15b5a280d22d 590 default:
icraggs 53:15b5a280d22d 591 // no more data to read, unrecoverable. Or read packet fails due to unexpected network error
icraggs 46:e335fcc1a663 592 rc = packet_type;
icraggs 53:15b5a280d22d 593 goto exit;
icraggs 53:15b5a280d22d 594 case 0: // timed out reading packet
icraggs 46:e335fcc1a663 595 break;
icraggs 15:64a57183aa03 596 case CONNACK:
icraggs 8:c46930bd6c82 597 case PUBACK:
icraggs 8:c46930bd6c82 598 case SUBACK:
icraggs 8:c46930bd6c82 599 break;
icraggs 15:64a57183aa03 600 case PUBLISH:
icraggs 46:e335fcc1a663 601 {
icraggs 46:e335fcc1a663 602 MQTTString topicName = MQTTString_initializer;
icraggs 20:cad3d54d7ecf 603 Message msg;
icraggs 46:e335fcc1a663 604 int intQoS;
icraggs 53:15b5a280d22d 605 msg.payloadlen = 0; /* this is a size_t, but deserialize publish sets this as int */
icraggs 46:e335fcc1a663 606 if (MQTTDeserialize_publish((unsigned char*)&msg.dup, &intQoS, (unsigned char*)&msg.retained, (unsigned short*)&msg.id, &topicName,
icraggs 36:2f1ada427e56 607 (unsigned char**)&msg.payload, (int*)&msg.payloadlen, readbuf, MAX_MQTT_PACKET_SIZE) != 1)
icraggs 26:2658bb87c53d 608 goto exit;
icraggs 46:e335fcc1a663 609 msg.qos = (enum QoS)intQoS;
icraggs 43:21da1f744243 610 #if MQTTCLIENT_QOS2
icraggs 43:21da1f744243 611 if (msg.qos != QOS2)
icraggs 43:21da1f744243 612 #endif
icraggs 31:a51dd239b78e 613 deliverMessage(topicName, msg);
icraggs 43:21da1f744243 614 #if MQTTCLIENT_QOS2
icraggs 31:a51dd239b78e 615 else if (isQoS2msgidFree(msg.id))
icraggs 31:a51dd239b78e 616 {
icraggs 43:21da1f744243 617 if (useQoS2msgid(msg.id))
icraggs 43:21da1f744243 618 deliverMessage(topicName, msg);
icraggs 43:21da1f744243 619 else
icraggs 43:21da1f744243 620 WARN("Maximum number of incoming QoS2 messages exceeded");
icraggs 46:e335fcc1a663 621 }
icraggs 31:a51dd239b78e 622 #endif
icraggs 43:21da1f744243 623 #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2
icraggs 20:cad3d54d7ecf 624 if (msg.qos != QOS0)
icraggs 20:cad3d54d7ecf 625 {
icraggs 20:cad3d54d7ecf 626 if (msg.qos == QOS1)
icraggs 43:21da1f744243 627 len = MQTTSerialize_ack(sendbuf, MAX_MQTT_PACKET_SIZE, PUBACK, 0, msg.id);
icraggs 20:cad3d54d7ecf 628 else if (msg.qos == QOS2)
icraggs 43:21da1f744243 629 len = MQTTSerialize_ack(sendbuf, MAX_MQTT_PACKET_SIZE, PUBREC, 0, msg.id);
icraggs 26:2658bb87c53d 630 if (len <= 0)
icraggs 26:2658bb87c53d 631 rc = FAILURE;
icraggs 26:2658bb87c53d 632 else
icraggs 26:2658bb87c53d 633 rc = sendPacket(len, timer);
icraggs 26:2658bb87c53d 634 if (rc == FAILURE)
icraggs 20:cad3d54d7ecf 635 goto exit; // there was a problem
icraggs 20:cad3d54d7ecf 636 }
Ian Craggs 12:cc7f2d62a393 637 break;
icraggs 43:21da1f744243 638 #endif
icraggs 46:e335fcc1a663 639 }
icraggs 43:21da1f744243 640 #if MQTTCLIENT_QOS2
icraggs 15:64a57183aa03 641 case PUBREC:
icraggs 46:e335fcc1a663 642 case PUBREL:
icraggs 36:2f1ada427e56 643 unsigned short mypacketid;
icraggs 36:2f1ada427e56 644 unsigned char dup, type;
icraggs 26:2658bb87c53d 645 if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1)
icraggs 26:2658bb87c53d 646 rc = FAILURE;
icraggs 53:15b5a280d22d 647 else if ((len = MQTTSerialize_ack(sendbuf, MAX_MQTT_PACKET_SIZE,
icraggs 53:15b5a280d22d 648 (packet_type == PUBREC) ? PUBREL : PUBCOMP, 0, mypacketid)) <= 0)
icraggs 26:2658bb87c53d 649 rc = FAILURE;
icraggs 26:2658bb87c53d 650 else if ((rc = sendPacket(len, timer)) != SUCCESS) // send the PUBREL packet
icraggs 26:2658bb87c53d 651 rc = FAILURE; // there was a problem
icraggs 26:2658bb87c53d 652 if (rc == FAILURE)
icraggs 20:cad3d54d7ecf 653 goto exit; // there was a problem
icraggs 46:e335fcc1a663 654 if (packet_type == PUBREL)
icraggs 46:e335fcc1a663 655 freeQoS2msgid(mypacketid);
icraggs 8:c46930bd6c82 656 break;
icraggs 53:15b5a280d22d 657
icraggs 8:c46930bd6c82 658 case PUBCOMP:
icraggs 8:c46930bd6c82 659 break;
icraggs 43:21da1f744243 660 #endif
icraggs 15:64a57183aa03 661 case PINGRESP:
icraggs 20:cad3d54d7ecf 662 ping_outstanding = false;
icraggs 8:c46930bd6c82 663 break;
icraggs 15:64a57183aa03 664 }
icraggs 53:15b5a280d22d 665
icraggs 53:15b5a280d22d 666 if (keepalive() != SUCCESS)
icraggs 53:15b5a280d22d 667 //check only keepalive FAILURE status so that previous FAILURE status can be considered as FAULT
icraggs 53:15b5a280d22d 668 rc = FAILURE;
icraggs 53:15b5a280d22d 669
Ian Craggs 12:cc7f2d62a393 670 exit:
icraggs 26:2658bb87c53d 671 if (rc == SUCCESS)
icraggs 26:2658bb87c53d 672 rc = packet_type;
icraggs 53:15b5a280d22d 673 else if (isconnected)
icraggs 53:15b5a280d22d 674 closeSession();
icraggs 26:2658bb87c53d 675 return rc;
icraggs 15:64a57183aa03 676 }
icraggs 15:64a57183aa03 677
icraggs 15:64a57183aa03 678
icraggs 23:05fc7de97d4a 679 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 23:05fc7de97d4a 680 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::keepalive()
icraggs 15:64a57183aa03 681 {
icraggs 53:15b5a280d22d 682 int rc = SUCCESS;
icraggs 54:ff9e5c4b52d0 683 static Timer ping_sent;
icraggs 15:64a57183aa03 684
icraggs 20:cad3d54d7ecf 685 if (keepAliveInterval == 0)
icraggs 20:cad3d54d7ecf 686 goto exit;
icraggs 54:ff9e5c4b52d0 687
icraggs 54:ff9e5c4b52d0 688 if (ping_outstanding)
icraggs 20:cad3d54d7ecf 689 {
icraggs 54:ff9e5c4b52d0 690 if (ping_sent.expired())
icraggs 53:15b5a280d22d 691 {
icraggs 53:15b5a280d22d 692 rc = FAILURE; // session failure
icraggs 53:15b5a280d22d 693 #if defined(MQTT_DEBUG)
icraggs 56:71ae1a773b64 694 DEBUG("PINGRESP not received in keepalive interval\r\n");
icraggs 53:15b5a280d22d 695 #endif
icraggs 53:15b5a280d22d 696 }
icraggs 54:ff9e5c4b52d0 697 }
icraggs 54:ff9e5c4b52d0 698 else if (last_sent.expired() || last_received.expired())
icraggs 54:ff9e5c4b52d0 699 {
icraggs 54:ff9e5c4b52d0 700 Timer timer(1000);
icraggs 54:ff9e5c4b52d0 701 int len = MQTTSerialize_pingreq(sendbuf, MAX_MQTT_PACKET_SIZE);
icraggs 54:ff9e5c4b52d0 702 if (len > 0 && (rc = sendPacket(len, timer)) == SUCCESS) // send the ping packet
icraggs 20:cad3d54d7ecf 703 {
icraggs 54:ff9e5c4b52d0 704 ping_outstanding = true;
icraggs 54:ff9e5c4b52d0 705 ping_sent.countdown(this->keepAliveInterval);
icraggs 20:cad3d54d7ecf 706 }
icraggs 20:cad3d54d7ecf 707 }
icraggs 15:64a57183aa03 708 exit:
icraggs 20:cad3d54d7ecf 709 return rc;
icraggs 8:c46930bd6c82 710 }
icraggs 8:c46930bd6c82 711
icraggs 8:c46930bd6c82 712
icraggs 16:91c2f9a144d4 713 // only used in single-threaded mode where one command at a time is in process
icraggs 43:21da1f744243 714 template<class Network, class Timer, int a, int b>
icraggs 23:05fc7de97d4a 715 int MQTT::Client<Network, Timer, a, b>::waitfor(int packet_type, Timer& timer)
icraggs 15:64a57183aa03 716 {
icraggs 26:2658bb87c53d 717 int rc = FAILURE;
icraggs 43:21da1f744243 718
icraggs 20:cad3d54d7ecf 719 do
icraggs 16:91c2f9a144d4 720 {
icraggs 43:21da1f744243 721 if (timer.expired())
icraggs 20:cad3d54d7ecf 722 break; // we timed out
icraggs 53:15b5a280d22d 723 rc = cycle(timer);
icraggs 20:cad3d54d7ecf 724 }
icraggs 53:15b5a280d22d 725 while (rc != packet_type && rc >= 0);
icraggs 43:21da1f744243 726
icraggs 20:cad3d54d7ecf 727 return rc;
icraggs 16:91c2f9a144d4 728 }
icraggs 16:91c2f9a144d4 729
icraggs 16:91c2f9a144d4 730
icraggs 43:21da1f744243 731 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 53:15b5a280d22d 732 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::connect(MQTTPacket_connectData& options, connackData& data)
icraggs 16:91c2f9a144d4 733 {
icraggs 46:e335fcc1a663 734 Timer connect_timer(command_timeout_ms);
icraggs 26:2658bb87c53d 735 int rc = FAILURE;
icraggs 31:a51dd239b78e 736 int len = 0;
icraggs 43:21da1f744243 737
icraggs 31:a51dd239b78e 738 if (isconnected) // don't send connect packet again if we are already connected
icraggs 31:a51dd239b78e 739 goto exit;
icraggs 8:c46930bd6c82 740
icraggs 43:21da1f744243 741 this->keepAliveInterval = options.keepAliveInterval;
icraggs 43:21da1f744243 742 this->cleansession = options.cleansession;
icraggs 43:21da1f744243 743 if ((len = MQTTSerialize_connect(sendbuf, MAX_MQTT_PACKET_SIZE, &options)) <= 0)
icraggs 26:2658bb87c53d 744 goto exit;
icraggs 26:2658bb87c53d 745 if ((rc = sendPacket(len, connect_timer)) != SUCCESS) // send the connect packet
icraggs 20:cad3d54d7ecf 746 goto exit; // there was a problem
icraggs 43:21da1f744243 747
icraggs 43:21da1f744243 748 if (this->keepAliveInterval > 0)
icraggs 43:21da1f744243 749 last_received.countdown(this->keepAliveInterval);
icraggs 20:cad3d54d7ecf 750 // this will be a blocking call, wait for the connack
icraggs 20:cad3d54d7ecf 751 if (waitfor(CONNACK, connect_timer) == CONNACK)
icraggs 15:64a57183aa03 752 {
icraggs 53:15b5a280d22d 753 data.rc = 0;
icraggs 53:15b5a280d22d 754 data.sessionPresent = false;
icraggs 53:15b5a280d22d 755 if (MQTTDeserialize_connack((unsigned char*)&data.sessionPresent,
icraggs 53:15b5a280d22d 756 (unsigned char*)&data.rc, readbuf, MAX_MQTT_PACKET_SIZE) == 1)
icraggs 53:15b5a280d22d 757 rc = data.rc;
icraggs 26:2658bb87c53d 758 else
icraggs 26:2658bb87c53d 759 rc = FAILURE;
icraggs 8:c46930bd6c82 760 }
icraggs 26:2658bb87c53d 761 else
icraggs 26:2658bb87c53d 762 rc = FAILURE;
icraggs 46:e335fcc1a663 763
icraggs 43:21da1f744243 764 #if MQTTCLIENT_QOS2
icraggs 46:e335fcc1a663 765 // resend any inflight publish
icraggs 46:e335fcc1a663 766 if (inflightMsgid > 0 && inflightQoS == QOS2 && pubrel)
icraggs 43:21da1f744243 767 {
icraggs 43:21da1f744243 768 if ((len = MQTTSerialize_ack(sendbuf, MAX_MQTT_PACKET_SIZE, PUBREL, 0, inflightMsgid)) <= 0)
icraggs 43:21da1f744243 769 rc = FAILURE;
icraggs 43:21da1f744243 770 else
icraggs 43:21da1f744243 771 rc = publish(len, connect_timer, inflightQoS);
icraggs 43:21da1f744243 772 }
icraggs 43:21da1f744243 773 else
icraggs 43:21da1f744243 774 #endif
icraggs 43:21da1f744243 775 #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2
icraggs 43:21da1f744243 776 if (inflightMsgid > 0)
icraggs 43:21da1f744243 777 {
icraggs 43:21da1f744243 778 memcpy(sendbuf, pubbuf, MAX_MQTT_PACKET_SIZE);
icraggs 43:21da1f744243 779 rc = publish(inflightLen, connect_timer, inflightQoS);
icraggs 43:21da1f744243 780 }
icraggs 43:21da1f744243 781 #endif
icraggs 43:21da1f744243 782
icraggs 15:64a57183aa03 783 exit:
icraggs 26:2658bb87c53d 784 if (rc == SUCCESS)
icraggs 53:15b5a280d22d 785 {
icraggs 26:2658bb87c53d 786 isconnected = true;
icraggs 53:15b5a280d22d 787 ping_outstanding = false;
icraggs 53:15b5a280d22d 788 }
icraggs 8:c46930bd6c82 789 return rc;
icraggs 8:c46930bd6c82 790 }
icraggs 8:c46930bd6c82 791
icraggs 8:c46930bd6c82 792
icraggs 43:21da1f744243 793 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 53:15b5a280d22d 794 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::connect(MQTTPacket_connectData& options)
icraggs 53:15b5a280d22d 795 {
icraggs 53:15b5a280d22d 796 connackData data;
icraggs 53:15b5a280d22d 797 return connect(options, data);
icraggs 53:15b5a280d22d 798 }
icraggs 53:15b5a280d22d 799
icraggs 53:15b5a280d22d 800
icraggs 53:15b5a280d22d 801 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 43:21da1f744243 802 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::connect()
icraggs 43:21da1f744243 803 {
icraggs 43:21da1f744243 804 MQTTPacket_connectData default_options = MQTTPacket_connectData_initializer;
icraggs 43:21da1f744243 805 return connect(default_options);
icraggs 43:21da1f744243 806 }
icraggs 43:21da1f744243 807
icraggs 43:21da1f744243 808
icraggs 43:21da1f744243 809 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS>
icraggs 53:15b5a280d22d 810 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::setMessageHandler(const char* topicFilter, messageHandler messageHandler)
icraggs 53:15b5a280d22d 811 {
icraggs 53:15b5a280d22d 812 int rc = FAILURE;
icraggs 53:15b5a280d22d 813 int i = -1;
icraggs 53:15b5a280d22d 814
icraggs 53:15b5a280d22d 815 // first check for an existing matching slot
icraggs 53:15b5a280d22d 816 for (i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 53:15b5a280d22d 817 {
icraggs 53:15b5a280d22d 818 if (messageHandlers[i].topicFilter != 0 && strcmp(messageHandlers[i].topicFilter, topicFilter) == 0)
icraggs 53:15b5a280d22d 819 {
icraggs 53:15b5a280d22d 820 if (messageHandler == 0) // remove existing
icraggs 53:15b5a280d22d 821 {
icraggs 53:15b5a280d22d 822 messageHandlers[i].topicFilter = 0;
icraggs 53:15b5a280d22d 823 messageHandlers[i].fp.detach();
icraggs 53:15b5a280d22d 824 }
icraggs 53:15b5a280d22d 825 rc = SUCCESS; // return i when adding new subscription
icraggs 53:15b5a280d22d 826 break;
icraggs 53:15b5a280d22d 827 }
icraggs 53:15b5a280d22d 828 }
icraggs 53:15b5a280d22d 829 // if no existing, look for empty slot (unless we are removing)
icraggs 53:15b5a280d22d 830 if (messageHandler != 0) {
icraggs 53:15b5a280d22d 831 if (rc == FAILURE)
icraggs 53:15b5a280d22d 832 {
icraggs 53:15b5a280d22d 833 for (i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 53:15b5a280d22d 834 {
icraggs 53:15b5a280d22d 835 if (messageHandlers[i].topicFilter == 0)
icraggs 53:15b5a280d22d 836 {
icraggs 53:15b5a280d22d 837 rc = SUCCESS;
icraggs 53:15b5a280d22d 838 break;
icraggs 53:15b5a280d22d 839 }
icraggs 53:15b5a280d22d 840 }
icraggs 53:15b5a280d22d 841 }
icraggs 53:15b5a280d22d 842 if (i < MAX_MESSAGE_HANDLERS)
icraggs 53:15b5a280d22d 843 {
icraggs 53:15b5a280d22d 844 messageHandlers[i].topicFilter = topicFilter;
icraggs 53:15b5a280d22d 845 messageHandlers[i].fp.attach(messageHandler);
icraggs 53:15b5a280d22d 846 }
icraggs 53:15b5a280d22d 847 }
icraggs 53:15b5a280d22d 848 return rc;
icraggs 53:15b5a280d22d 849 }
icraggs 53:15b5a280d22d 850
icraggs 53:15b5a280d22d 851
icraggs 53:15b5a280d22d 852 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS>
icraggs 53:15b5a280d22d 853 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::subscribe(const char* topicFilter,
icraggs 53:15b5a280d22d 854 enum QoS qos, messageHandler messageHandler, subackData& data)
icraggs 43:21da1f744243 855 {
icraggs 43:21da1f744243 856 int rc = FAILURE;
icraggs 46:e335fcc1a663 857 Timer timer(command_timeout_ms);
icraggs 26:2658bb87c53d 858 int len = 0;
icraggs 46:e335fcc1a663 859 MQTTString topic = {(char*)topicFilter, {0, 0}};
icraggs 43:21da1f744243 860
icraggs 26:2658bb87c53d 861 if (!isconnected)
icraggs 20:cad3d54d7ecf 862 goto exit;
icraggs 43:21da1f744243 863
icraggs 43:21da1f744243 864 len = MQTTSerialize_subscribe(sendbuf, MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic, (int*)&qos);
icraggs 26:2658bb87c53d 865 if (len <= 0)
icraggs 26:2658bb87c53d 866 goto exit;
icraggs 23:05fc7de97d4a 867 if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet
icraggs 26:2658bb87c53d 868 goto exit; // there was a problem
icraggs 43:21da1f744243 869
icraggs 43:21da1f744243 870 if (waitfor(SUBACK, timer) == SUBACK) // wait for suback
icraggs 8:c46930bd6c82 871 {
icraggs 53:15b5a280d22d 872 int count = 0;
icraggs 36:2f1ada427e56 873 unsigned short mypacketid;
icraggs 53:15b5a280d22d 874 data.grantedQoS = 0;
icraggs 53:15b5a280d22d 875 if (MQTTDeserialize_suback(&mypacketid, 1, &count, &data.grantedQoS, readbuf, MAX_MQTT_PACKET_SIZE) == 1)
icraggs 8:c46930bd6c82 876 {
icraggs 53:15b5a280d22d 877 if (data.grantedQoS != 0x80)
icraggs 53:15b5a280d22d 878 rc = setMessageHandler(topicFilter, messageHandler);
icraggs 8:c46930bd6c82 879 }
icraggs 8:c46930bd6c82 880 }
icraggs 43:21da1f744243 881 else
icraggs 26:2658bb87c53d 882 rc = FAILURE;
icraggs 43:21da1f744243 883
icraggs 15:64a57183aa03 884 exit:
icraggs 53:15b5a280d22d 885 if (rc == FAILURE)
icraggs 53:15b5a280d22d 886 closeSession();
Ian Craggs 12:cc7f2d62a393 887 return rc;
icraggs 15:64a57183aa03 888 }
icraggs 15:64a57183aa03 889
icraggs 15:64a57183aa03 890
icraggs 43:21da1f744243 891 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS>
icraggs 53:15b5a280d22d 892 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::subscribe(const char* topicFilter, enum QoS qos, messageHandler messageHandler)
icraggs 53:15b5a280d22d 893 {
icraggs 53:15b5a280d22d 894 subackData data;
icraggs 53:15b5a280d22d 895 return subscribe(topicFilter, qos, messageHandler, data);
icraggs 53:15b5a280d22d 896 }
icraggs 53:15b5a280d22d 897
icraggs 53:15b5a280d22d 898
icraggs 53:15b5a280d22d 899 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS>
icraggs 23:05fc7de97d4a 900 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::unsubscribe(const char* topicFilter)
icraggs 43:21da1f744243 901 {
icraggs 26:2658bb87c53d 902 int rc = FAILURE;
icraggs 46:e335fcc1a663 903 Timer timer(command_timeout_ms);
icraggs 46:e335fcc1a663 904 MQTTString topic = {(char*)topicFilter, {0, 0}};
icraggs 31:a51dd239b78e 905 int len = 0;
icraggs 43:21da1f744243 906
icraggs 31:a51dd239b78e 907 if (!isconnected)
icraggs 31:a51dd239b78e 908 goto exit;
icraggs 43:21da1f744243 909
icraggs 43:21da1f744243 910 if ((len = MQTTSerialize_unsubscribe(sendbuf, MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic)) <= 0)
icraggs 20:cad3d54d7ecf 911 goto exit;
icraggs 43:21da1f744243 912 if ((rc = sendPacket(len, timer)) != SUCCESS) // send the unsubscribe packet
icraggs 20:cad3d54d7ecf 913 goto exit; // there was a problem
icraggs 43:21da1f744243 914
icraggs 20:cad3d54d7ecf 915 if (waitfor(UNSUBACK, timer) == UNSUBACK)
Ian Craggs 12:cc7f2d62a393 916 {
icraggs 36:2f1ada427e56 917 unsigned short mypacketid; // should be the same as the packetid above
icraggs 23:05fc7de97d4a 918 if (MQTTDeserialize_unsuback(&mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) == 1)
icraggs 46:e335fcc1a663 919 {
icraggs 46:e335fcc1a663 920 // remove the subscription message handler associated with this topic, if there is one
icraggs 53:15b5a280d22d 921 setMessageHandler(topicFilter, 0);
icraggs 46:e335fcc1a663 922 }
Ian Craggs 12:cc7f2d62a393 923 }
icraggs 26:2658bb87c53d 924 else
icraggs 26:2658bb87c53d 925 rc = FAILURE;
icraggs 43:21da1f744243 926
icraggs 15:64a57183aa03 927 exit:
icraggs 43:21da1f744243 928 if (rc != SUCCESS)
icraggs 53:15b5a280d22d 929 closeSession();
Ian Craggs 12:cc7f2d62a393 930 return rc;
icraggs 15:64a57183aa03 931 }
icraggs 15:64a57183aa03 932
icraggs 15:64a57183aa03 933
icraggs 43:21da1f744243 934 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 43:21da1f744243 935 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(int len, Timer& timer, enum QoS qos)
icraggs 20:cad3d54d7ecf 936 {
icraggs 43:21da1f744243 937 int rc;
icraggs 46:e335fcc1a663 938
icraggs 43:21da1f744243 939 if ((rc = sendPacket(len, timer)) != SUCCESS) // send the publish packet
icraggs 43:21da1f744243 940 goto exit; // there was a problem
icraggs 15:64a57183aa03 941
icraggs 46:e335fcc1a663 942 #if MQTTCLIENT_QOS1
icraggs 43:21da1f744243 943 if (qos == QOS1)
Ian Craggs 12:cc7f2d62a393 944 {
icraggs 20:cad3d54d7ecf 945 if (waitfor(PUBACK, timer) == PUBACK)
icraggs 20:cad3d54d7ecf 946 {
icraggs 36:2f1ada427e56 947 unsigned short mypacketid;
icraggs 36:2f1ada427e56 948 unsigned char dup, type;
icraggs 26:2658bb87c53d 949 if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1)
icraggs 26:2658bb87c53d 950 rc = FAILURE;
icraggs 43:21da1f744243 951 else if (inflightMsgid == mypacketid)
icraggs 43:21da1f744243 952 inflightMsgid = 0;
icraggs 20:cad3d54d7ecf 953 }
icraggs 26:2658bb87c53d 954 else
icraggs 26:2658bb87c53d 955 rc = FAILURE;
Ian Craggs 12:cc7f2d62a393 956 }
icraggs 53:15b5a280d22d 957 #endif
icraggs 53:15b5a280d22d 958 #if MQTTCLIENT_QOS2
icraggs 43:21da1f744243 959 else if (qos == QOS2)
Ian Craggs 12:cc7f2d62a393 960 {
icraggs 20:cad3d54d7ecf 961 if (waitfor(PUBCOMP, timer) == PUBCOMP)
icraggs 20:cad3d54d7ecf 962 {
icraggs 36:2f1ada427e56 963 unsigned short mypacketid;
icraggs 36:2f1ada427e56 964 unsigned char dup, type;
icraggs 26:2658bb87c53d 965 if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1)
icraggs 26:2658bb87c53d 966 rc = FAILURE;
icraggs 43:21da1f744243 967 else if (inflightMsgid == mypacketid)
icraggs 43:21da1f744243 968 inflightMsgid = 0;
icraggs 20:cad3d54d7ecf 969 }
icraggs 26:2658bb87c53d 970 else
icraggs 26:2658bb87c53d 971 rc = FAILURE;
Ian Craggs 12:cc7f2d62a393 972 }
icraggs 43:21da1f744243 973 #endif
icraggs 43:21da1f744243 974
icraggs 43:21da1f744243 975 exit:
icraggs 43:21da1f744243 976 if (rc != SUCCESS)
icraggs 53:15b5a280d22d 977 closeSession();
icraggs 43:21da1f744243 978 return rc;
icraggs 43:21da1f744243 979 }
icraggs 43:21da1f744243 980
icraggs 43:21da1f744243 981
icraggs 43:21da1f744243 982
icraggs 43:21da1f744243 983 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 43:21da1f744243 984 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(const char* topicName, void* payload, size_t payloadlen, unsigned short& id, enum QoS qos, bool retained)
icraggs 43:21da1f744243 985 {
icraggs 43:21da1f744243 986 int rc = FAILURE;
icraggs 46:e335fcc1a663 987 Timer timer(command_timeout_ms);
icraggs 43:21da1f744243 988 MQTTString topicString = MQTTString_initializer;
icraggs 43:21da1f744243 989 int len = 0;
icraggs 43:21da1f744243 990
icraggs 43:21da1f744243 991 if (!isconnected)
icraggs 43:21da1f744243 992 goto exit;
icraggs 46:e335fcc1a663 993
icraggs 43:21da1f744243 994 topicString.cstring = (char*)topicName;
icraggs 43:21da1f744243 995
icraggs 43:21da1f744243 996 #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2
icraggs 43:21da1f744243 997 if (qos == QOS1 || qos == QOS2)
icraggs 43:21da1f744243 998 id = packetid.getNext();
icraggs 43:21da1f744243 999 #endif
icraggs 43:21da1f744243 1000
icraggs 43:21da1f744243 1001 len = MQTTSerialize_publish(sendbuf, MAX_MQTT_PACKET_SIZE, 0, qos, retained, id,
icraggs 43:21da1f744243 1002 topicString, (unsigned char*)payload, payloadlen);
icraggs 43:21da1f744243 1003 if (len <= 0)
icraggs 43:21da1f744243 1004 goto exit;
icraggs 46:e335fcc1a663 1005
icraggs 43:21da1f744243 1006 #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2
icraggs 43:21da1f744243 1007 if (!cleansession)
icraggs 43:21da1f744243 1008 {
icraggs 43:21da1f744243 1009 memcpy(pubbuf, sendbuf, len);
icraggs 43:21da1f744243 1010 inflightMsgid = id;
icraggs 43:21da1f744243 1011 inflightLen = len;
icraggs 43:21da1f744243 1012 inflightQoS = qos;
icraggs 43:21da1f744243 1013 #if MQTTCLIENT_QOS2
icraggs 43:21da1f744243 1014 pubrel = false;
icraggs 43:21da1f744243 1015 #endif
icraggs 43:21da1f744243 1016 }
icraggs 43:21da1f744243 1017 #endif
icraggs 46:e335fcc1a663 1018
icraggs 43:21da1f744243 1019 rc = publish(len, timer, qos);
icraggs 15:64a57183aa03 1020 exit:
icraggs 8:c46930bd6c82 1021 return rc;
icraggs 8:c46930bd6c82 1022 }
icraggs 8:c46930bd6c82 1023
icraggs 8:c46930bd6c82 1024
icraggs 43:21da1f744243 1025 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 43:21da1f744243 1026 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(const char* topicName, void* payload, size_t payloadlen, enum QoS qos, bool retained)
icraggs 43:21da1f744243 1027 {
icraggs 43:21da1f744243 1028 unsigned short id = 0; // dummy - not used for anything
icraggs 43:21da1f744243 1029 return publish(topicName, payload, payloadlen, id, qos, retained);
icraggs 43:21da1f744243 1030 }
icraggs 43:21da1f744243 1031
icraggs 43:21da1f744243 1032
icraggs 43:21da1f744243 1033 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 43:21da1f744243 1034 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(const char* topicName, Message& message)
icraggs 43:21da1f744243 1035 {
icraggs 43:21da1f744243 1036 return publish(topicName, message.payload, message.payloadlen, message.qos, message.retained);
icraggs 43:21da1f744243 1037 }
icraggs 43:21da1f744243 1038
icraggs 43:21da1f744243 1039
icraggs 43:21da1f744243 1040 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 23:05fc7de97d4a 1041 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::disconnect()
icraggs 43:21da1f744243 1042 {
icraggs 26:2658bb87c53d 1043 int rc = FAILURE;
icraggs 53:15b5a280d22d 1044 Timer timer(command_timeout_ms); // we might wait for incomplete incoming publishes to complete
icraggs 44:c299463ae853 1045 int len = MQTTSerialize_disconnect(sendbuf, MAX_MQTT_PACKET_SIZE);
icraggs 26:2658bb87c53d 1046 if (len > 0)
icraggs 26:2658bb87c53d 1047 rc = sendPacket(len, timer); // send the disconnect packet
icraggs 53:15b5a280d22d 1048 closeSession();
icraggs 23:05fc7de97d4a 1049 return rc;
icraggs 20:cad3d54d7ecf 1050 }
icraggs 20:cad3d54d7ecf 1051
icraggs 53:15b5a280d22d 1052 #endif