OneM2M / MQTTSN_20

..

Dependencies:   FP

MQTTSNClient.h@6:1957f23ac496, 2019-03-27 (annotated)

Committer:
ImranBilalButt
Date:
Wed Mar 27 11:05:25 2019 +0000
Revision:
6:1957f23ac496
Parent:
5:7fb937012f6c 
.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
icraggs 0:ae83cacd60d2 1 /*******************************************************************************
icraggs 0:ae83cacd60d2 2 * Copyright (c) 2014, 2015 IBM Corp.
icraggs 0:ae83cacd60d2 3 *
icraggs 0:ae83cacd60d2 4 * All rights reserved. This program and the accompanying materials
icraggs 0:ae83cacd60d2 5 * are made available under the terms of the Eclipse Public License v1.0
icraggs 0:ae83cacd60d2 6 * and Eclipse Distribution License v1.0 which accompany this distribution.
icraggs 0:ae83cacd60d2 7 *
icraggs 0:ae83cacd60d2 8 * The Eclipse Public License is available at
icraggs 0:ae83cacd60d2 9 * http://www.eclipse.org/legal/epl-v10.html
icraggs 0:ae83cacd60d2 10 * and the Eclipse Distribution License is available at
icraggs 0:ae83cacd60d2 11 * http://www.eclipse.org/org/documents/edl-v10.php.
icraggs 0:ae83cacd60d2 12 *
icraggs 0:ae83cacd60d2 13 * Contributors:
icraggs 0:ae83cacd60d2 14 * Ian Craggs - initial API and implementation and/or initial documentation
icraggs 0:ae83cacd60d2 15 *******************************************************************************/
icraggs 0:ae83cacd60d2 16
icraggs 0:ae83cacd60d2 17 #if !defined(MQTTSNCLIENT_H)
icraggs 0:ae83cacd60d2 18 #define MQTTSNCLIENT_H
icraggs 0:ae83cacd60d2 19
icraggs 0:ae83cacd60d2 20 #include "FP.h"
icraggs 0:ae83cacd60d2 21 #include "MQTTSNPacket.h"
icraggs 0:ae83cacd60d2 22 #include "MQTTLogging.h"
icraggs 0:ae83cacd60d2 23
icraggs 0:ae83cacd60d2 24 // Data limits
icraggs 0:ae83cacd60d2 25 #if !defined(MAX_REGISTRATIONS)
icraggs 0:ae83cacd60d2 26 #define MAX_REGISTRATIONS 5
icraggs 0:ae83cacd60d2 27 #endif
icraggs 0:ae83cacd60d2 28 #if !defined(MAX_REGISTRATION_TOPIC_NAME_LENGTH)
icraggs 0:ae83cacd60d2 29 #define MAX_REGISTRATION_TOPIC_NAME_LENGTH 20
icraggs 0:ae83cacd60d2 30 #endif
icraggs 0:ae83cacd60d2 31 #if !defined(MAX_INCOMING_QOS2_MESSAGES)
icraggs 0:ae83cacd60d2 32 #define MAX_INCOMING_QOS2_MESSAGES 10
icraggs 0:ae83cacd60d2 33 #endif
icraggs 0:ae83cacd60d2 34
icraggs 0:ae83cacd60d2 35 #if !defined(MQTTSNCLIENT_QOS1)
icraggs 0:ae83cacd60d2 36 #define MQTTSNCLIENT_QOS1 1
icraggs 0:ae83cacd60d2 37 #endif
icraggs 0:ae83cacd60d2 38 #if !defined(MQTTSNCLIENT_QOS2)
m_ahsan 3:d85693ff9ec8 39 #define MQTTSNCLIENT_QOS2 1
icraggs 0:ae83cacd60d2 40 #endif
icraggs 0:ae83cacd60d2 41
icraggs 0:ae83cacd60d2 42 namespace MQTTSN
icraggs 0:ae83cacd60d2 43 {
icraggs 0:ae83cacd60d2 44
icraggs 0:ae83cacd60d2 45
icraggs 0:ae83cacd60d2 46 enum QoS { QOS0, QOS1, QOS2 };
icraggs 0:ae83cacd60d2 47
icraggs 0:ae83cacd60d2 48 // all failure return codes must be negative
icraggs 0:ae83cacd60d2 49 enum returnCode { MAX_SUBSCRIPTIONS_EXCEEDED = -3, BUFFER_OVERFLOW = -2, FAILURE = -1, SUCCESS = 0 };
icraggs 0:ae83cacd60d2 50
icraggs 0:ae83cacd60d2 51
icraggs 0:ae83cacd60d2 52 struct Message
icraggs 0:ae83cacd60d2 53 {
icraggs 0:ae83cacd60d2 54 enum QoS qos;
icraggs 0:ae83cacd60d2 55 bool retained;
icraggs 0:ae83cacd60d2 56 bool dup;
icraggs 0:ae83cacd60d2 57 unsigned short id;
icraggs 0:ae83cacd60d2 58 void *payload;
icraggs 0:ae83cacd60d2 59 size_t payloadlen;
icraggs 0:ae83cacd60d2 60 };
icraggs 0:ae83cacd60d2 61
icraggs 0:ae83cacd60d2 62
icraggs 0:ae83cacd60d2 63 struct MessageData
icraggs 0:ae83cacd60d2 64 {
icraggs 0:ae83cacd60d2 65 MessageData(MQTTSN_topicid &aTopic, struct Message &aMessage) : message(aMessage), topic(aTopic)
icraggs 0:ae83cacd60d2 66 { }
icraggs 0:ae83cacd60d2 67
icraggs 0:ae83cacd60d2 68 struct Message &message;
icraggs 0:ae83cacd60d2 69 MQTTSN_topicid &topic;
icraggs 0:ae83cacd60d2 70 };
icraggs 0:ae83cacd60d2 71
icraggs 0:ae83cacd60d2 72
icraggs 0:ae83cacd60d2 73 class PacketId
icraggs 0:ae83cacd60d2 74 {
icraggs 0:ae83cacd60d2 75 public:
icraggs 0:ae83cacd60d2 76 PacketId()
icraggs 0:ae83cacd60d2 77 {
icraggs 0:ae83cacd60d2 78 next = 0;
icraggs 0:ae83cacd60d2 79 }
icraggs 0:ae83cacd60d2 80
icraggs 0:ae83cacd60d2 81 int getNext()
icraggs 0:ae83cacd60d2 82 {
icraggs 0:ae83cacd60d2 83 return next = (next == MAX_PACKET_ID) ? 1 : ++next;
icraggs 0:ae83cacd60d2 84 }
icraggs 0:ae83cacd60d2 85
icraggs 0:ae83cacd60d2 86 private:
icraggs 0:ae83cacd60d2 87 static const int MAX_PACKET_ID = 65535;
icraggs 0:ae83cacd60d2 88 int next;
icraggs 0:ae83cacd60d2 89 };
icraggs 0:ae83cacd60d2 90
icraggs 0:ae83cacd60d2 91
icraggs 0:ae83cacd60d2 92 /**
icraggs 0:ae83cacd60d2 93 * @class MQTTSNClient
icraggs 0:ae83cacd60d2 94 * @brief blocking, non-threaded MQTTSN client API
icraggs 0:ae83cacd60d2 95 *
icraggs 0:ae83cacd60d2 96 * This version of the API blocks on all method calls, until they are complete. This means that only one
icraggs 0:ae83cacd60d2 97 * MQTT request can be in process at any one time.
icraggs 0:ae83cacd60d2 98 * @param Network a network class which supports send, receive
icraggs 0:ae83cacd60d2 99 * @param Timer a timer class with the methods:
icraggs 0:ae83cacd60d2 100 */
m_ahsan 3:d85693ff9ec8 101 template<class Network, class Timer, int MAX_PACKET_SIZE = 1024, int MAX_MESSAGE_HANDLERS = 5>
icraggs 0:ae83cacd60d2 102 class Client
icraggs 0:ae83cacd60d2 103 {
icraggs 0:ae83cacd60d2 104
icraggs 0:ae83cacd60d2 105 public:
icraggs 0:ae83cacd60d2 106
icraggs 0:ae83cacd60d2 107 typedef void (*messageHandler)(MessageData&);
icraggs 0:ae83cacd60d2 108
icraggs 0:ae83cacd60d2 109 /** Construct the client
icraggs 0:ae83cacd60d2 110 * @param network - pointer to an instance of the Network class - must be connected to the endpoint
icraggs 0:ae83cacd60d2 111 * before calling MQTT connect
icraggs 0:ae83cacd60d2 112 * @param limits an instance of the Limit class - to alter limits as required
icraggs 0:ae83cacd60d2 113 */
icraggs 0:ae83cacd60d2 114 Client(Network& network, unsigned int command_timeout_ms = 30000);
icraggs 0:ae83cacd60d2 115
icraggs 0:ae83cacd60d2 116 /** Set the default message handling callback - used for any message which does not match a subscription message handler
icraggs 0:ae83cacd60d2 117 * @param mh - pointer to the callback function
icraggs 0:ae83cacd60d2 118 */
icraggs 0:ae83cacd60d2 119 void setDefaultMessageHandler(messageHandler mh)
icraggs 0:ae83cacd60d2 120 {
icraggs 0:ae83cacd60d2 121 defaultMessageHandler.attach(mh);
icraggs 0:ae83cacd60d2 122 }
icraggs 0:ae83cacd60d2 123
icraggs 0:ae83cacd60d2 124 /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack
icraggs 0:ae83cacd60d2 125 * The nework object must be connected to the network endpoint before calling this
icraggs 0:ae83cacd60d2 126 * Default connect options are used
icraggs 0:ae83cacd60d2 127 * @return success code -
icraggs 0:ae83cacd60d2 128 */
icraggs 0:ae83cacd60d2 129 int connect();
icraggs 0:ae83cacd60d2 130
icraggs 0:ae83cacd60d2 131 /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack
icraggs 0:ae83cacd60d2 132 * The nework object must be connected to the network endpoint before calling this
icraggs 0:ae83cacd60d2 133 * @param options - connect options
icraggs 0:ae83cacd60d2 134 * @return success code -
icraggs 0:ae83cacd60d2 135 */
icraggs 0:ae83cacd60d2 136 int connect(MQTTSNPacket_connectData& options);
icraggs 0:ae83cacd60d2 137
icraggs 0:ae83cacd60d2 138 /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs
icraggs 0:ae83cacd60d2 139 * @param topic - the topic to publish to
icraggs 0:ae83cacd60d2 140 * @param message - the message to send
icraggs 0:ae83cacd60d2 141 * @return success code -
icraggs 0:ae83cacd60d2 142 */
icraggs 0:ae83cacd60d2 143 int publish(MQTTSN_topicid& topic, Message& message);
icraggs 0:ae83cacd60d2 144
icraggs 0:ae83cacd60d2 145 /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs
icraggs 0:ae83cacd60d2 146 * @param topic - the topic to publish to
icraggs 0:ae83cacd60d2 147 * @param payload - the data to send
icraggs 0:ae83cacd60d2 148 * @param payloadlen - the length of the data
icraggs 0:ae83cacd60d2 149 * @param qos - the QoS to send the publish at
icraggs 0:ae83cacd60d2 150 * @param retained - whether the message should be retained
icraggs 0:ae83cacd60d2 151 * @return success code -
icraggs 0:ae83cacd60d2 152 */
icraggs 0:ae83cacd60d2 153 int publish(MQTTSN_topicid &topic, void* payload, size_t payloadlen, enum QoS qos = QOS0, bool retained = false);
icraggs 0:ae83cacd60d2 154
icraggs 0:ae83cacd60d2 155 /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs
icraggs 0:ae83cacd60d2 156 * @param topic - the topic to publish to
icraggs 0:ae83cacd60d2 157 * @param payload - the data to send
icraggs 0:ae83cacd60d2 158 * @param payloadlen - the length of the data
icraggs 0:ae83cacd60d2 159 * @param id - the packet id used - returned
icraggs 0:ae83cacd60d2 160 * @param qos - the QoS to send the publish at
icraggs 0:ae83cacd60d2 161 * @param retained - whether the message should be retained
icraggs 0:ae83cacd60d2 162 * @return success code -
icraggs 0:ae83cacd60d2 163 */
icraggs 0:ae83cacd60d2 164 int publish(MQTTSN_topicid& topic, void* payload, size_t payloadlen, unsigned short& id, enum QoS qos = QOS1, bool retained = false);
icraggs 0:ae83cacd60d2 165
icraggs 0:ae83cacd60d2 166 /** MQTT Subscribe - send an MQTT subscribe packet and wait for the suback
icraggs 0:ae83cacd60d2 167 * @param topicFilter - a topic pattern which can include wildcards
icraggs 0:ae83cacd60d2 168 * @param qos - the MQTT QoS to subscribe at
icraggs 0:ae83cacd60d2 169 * @param mh - the callback function to be invoked when a message is received for this subscription
icraggs 0:ae83cacd60d2 170 * @return success code -
icraggs 0:ae83cacd60d2 171 */
icraggs 0:ae83cacd60d2 172 int subscribe(MQTTSN_topicid& topicFilter, enum QoS qos, enum QoS &grantedQoS, messageHandler mh);
icraggs 0:ae83cacd60d2 173
icraggs 0:ae83cacd60d2 174 /** MQTT Unsubscribe - send an MQTT unsubscribe packet and wait for the unsuback
icraggs 0:ae83cacd60d2 175 * @param topicFilter - a topic pattern which can include wildcards
icraggs 0:ae83cacd60d2 176 * @return success code -
icraggs 0:ae83cacd60d2 177 */
icraggs 0:ae83cacd60d2 178 int unsubscribe(MQTTSN_topicid& topicFilter);
icraggs 0:ae83cacd60d2 179
icraggs 0:ae83cacd60d2 180 /** MQTT Disconnect - send an MQTT disconnect packet, and clean up any state
icraggs 0:ae83cacd60d2 181 * @param duration - used for sleeping clients, 0 means no duration
icraggs 0:ae83cacd60d2 182 * @return success code -
icraggs 0:ae83cacd60d2 183 */
icraggs 0:ae83cacd60d2 184 int disconnect(unsigned short duration = 0);
icraggs 0:ae83cacd60d2 185
icraggs 0:ae83cacd60d2 186 /** A call to this API must be made within the keepAlive interval to keep the MQTT connection alive
icraggs 0:ae83cacd60d2 187 * yield can be called if no other MQTT operation is needed. This will also allow messages to be
icraggs 0:ae83cacd60d2 188 * received.
icraggs 0:ae83cacd60d2 189 * @param timeout_ms the time to wait, in milliseconds
icraggs 0:ae83cacd60d2 190 * @return success code - on failure, this means the client has disconnected
icraggs 0:ae83cacd60d2 191 */
icraggs 0:ae83cacd60d2 192 int yield(unsigned long timeout_ms = 1000L);
icraggs 0:ae83cacd60d2 193
icraggs 0:ae83cacd60d2 194 /** Is the client connected?
icraggs 0:ae83cacd60d2 195 * @return flag - is the client connected or not?
icraggs 0:ae83cacd60d2 196 */
icraggs 0:ae83cacd60d2 197 bool isConnected()
icraggs 0:ae83cacd60d2 198 {
icraggs 0:ae83cacd60d2 199 return isconnected;
icraggs 0:ae83cacd60d2 200 }
icraggs 0:ae83cacd60d2 201
icraggs 0:ae83cacd60d2 202 protected:
icraggs 0:ae83cacd60d2 203
icraggs 0:ae83cacd60d2 204 int cycle(Timer& timer);
icraggs 0:ae83cacd60d2 205 int waitfor(int packet_type, Timer& timer);
icraggs 0:ae83cacd60d2 206
icraggs 0:ae83cacd60d2 207 private:
icraggs 0:ae83cacd60d2 208
icraggs 0:ae83cacd60d2 209 int keepalive();
icraggs 0:ae83cacd60d2 210 int publish(int len, Timer& timer, enum QoS qos);
icraggs 0:ae83cacd60d2 211
icraggs 0:ae83cacd60d2 212 int readPacket(Timer& timer);
icraggs 0:ae83cacd60d2 213 int sendPacket(int length, Timer& timer);
icraggs 0:ae83cacd60d2 214 int deliverMessage(MQTTSN_topicid& topic, Message& message);
icraggs 0:ae83cacd60d2 215 bool isTopicMatched(char* topicFilter, MQTTSNString& topicName);
icraggs 0:ae83cacd60d2 216
icraggs 0:ae83cacd60d2 217 Network& ipstack;
icraggs 0:ae83cacd60d2 218 unsigned long command_timeout_ms;
icraggs 0:ae83cacd60d2 219
icraggs 0:ae83cacd60d2 220 unsigned char sendbuf[MAX_PACKET_SIZE];
icraggs 0:ae83cacd60d2 221 unsigned char readbuf[MAX_PACKET_SIZE];
icraggs 0:ae83cacd60d2 222
icraggs 0:ae83cacd60d2 223 Timer last_sent, last_received;
icraggs 0:ae83cacd60d2 224 unsigned short duration;
icraggs 0:ae83cacd60d2 225 bool ping_outstanding;
icraggs 0:ae83cacd60d2 226 bool cleansession;
icraggs 0:ae83cacd60d2 227
icraggs 0:ae83cacd60d2 228 PacketId packetid;
icraggs 0:ae83cacd60d2 229
icraggs 0:ae83cacd60d2 230 struct MessageHandlers
icraggs 0:ae83cacd60d2 231 {
icraggs 0:ae83cacd60d2 232 MQTTSN_topicid* topicFilter;
icraggs 0:ae83cacd60d2 233 FP<void, MessageData&> fp;
icraggs 0:ae83cacd60d2 234 } messageHandlers[MAX_MESSAGE_HANDLERS]; // Message handlers are indexed by subscription topic
icraggs 0:ae83cacd60d2 235
icraggs 0:ae83cacd60d2 236 FP<void, MessageData&> defaultMessageHandler;
icraggs 0:ae83cacd60d2 237
icraggs 0:ae83cacd60d2 238 bool isconnected;
icraggs 0:ae83cacd60d2 239
icraggs 0:ae83cacd60d2 240 struct Registrations
icraggs 0:ae83cacd60d2 241 {
icraggs 0:ae83cacd60d2 242 unsigned short id;
icraggs 0:ae83cacd60d2 243 char name[MAX_REGISTRATION_TOPIC_NAME_LENGTH];
icraggs 0:ae83cacd60d2 244 } registrations[MAX_REGISTRATIONS];
icraggs 0:ae83cacd60d2 245
icraggs 0:ae83cacd60d2 246 #if MQTTSNCLIENT_QOS1 || MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 247 unsigned char pubbuf[MAX_PACKET_SIZE]; // store the last publish for sending on reconnect
icraggs 0:ae83cacd60d2 248 int inflightLen;
icraggs 0:ae83cacd60d2 249 unsigned short inflightMsgid;
icraggs 0:ae83cacd60d2 250 enum QoS inflightQoS;
icraggs 0:ae83cacd60d2 251 #endif
icraggs 0:ae83cacd60d2 252
icraggs 0:ae83cacd60d2 253 #if MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 254 bool pubrel;
icraggs 0:ae83cacd60d2 255 unsigned short incomingQoS2messages[MAX_INCOMING_QOS2_MESSAGES];
icraggs 0:ae83cacd60d2 256 bool isQoS2msgidFree(unsigned short id);
icraggs 0:ae83cacd60d2 257 bool useQoS2msgid(unsigned short id);
icraggs 0:ae83cacd60d2 258 #endif
icraggs 0:ae83cacd60d2 259
icraggs 0:ae83cacd60d2 260 };
icraggs 0:ae83cacd60d2 261
icraggs 0:ae83cacd60d2 262 }
icraggs 0:ae83cacd60d2 263
icraggs 0:ae83cacd60d2 264
icraggs 0:ae83cacd60d2 265 template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS>
icraggs 0:ae83cacd60d2 266 MQTTSN::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::Client(Network& network, unsigned int command_timeout_ms) : ipstack(network), packetid()
icraggs 0:ae83cacd60d2 267 {
icraggs 0:ae83cacd60d2 268 last_sent = Timer();
icraggs 0:ae83cacd60d2 269 last_received = Timer();
icraggs 0:ae83cacd60d2 270 ping_outstanding = false;
icraggs 0:ae83cacd60d2 271 for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 0:ae83cacd60d2 272 messageHandlers[i].topicFilter = 0;
icraggs 0:ae83cacd60d2 273 this->command_timeout_ms = command_timeout_ms;
icraggs 0:ae83cacd60d2 274 isconnected = false;
icraggs 0:ae83cacd60d2 275
icraggs 0:ae83cacd60d2 276 #if MQTTSNCLIENT_QOS1 || MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 277 inflightMsgid = 0;
icraggs 0:ae83cacd60d2 278 inflightQoS = QOS0;
icraggs 0:ae83cacd60d2 279 #endif
icraggs 0:ae83cacd60d2 280
icraggs 0:ae83cacd60d2 281
icraggs 0:ae83cacd60d2 282 #if MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 283 pubrel = false;
icraggs 0:ae83cacd60d2 284 for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i)
icraggs 0:ae83cacd60d2 285 incomingQoS2messages[i] = 0;
icraggs 0:ae83cacd60d2 286 #endif
icraggs 0:ae83cacd60d2 287 }
icraggs 0:ae83cacd60d2 288
icraggs 0:ae83cacd60d2 289 #if MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 290 template<class Network, class Timer, int a, int b>
icraggs 0:ae83cacd60d2 291 bool MQTTSN::Client<Network, Timer, a, b>::isQoS2msgidFree(unsigned short id)
icraggs 0:ae83cacd60d2 292 {
icraggs 0:ae83cacd60d2 293 for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i)
icraggs 0:ae83cacd60d2 294 {
icraggs 0:ae83cacd60d2 295 if (incomingQoS2messages[i] == id)
icraggs 0:ae83cacd60d2 296 return false;
icraggs 0:ae83cacd60d2 297 }
icraggs 0:ae83cacd60d2 298 return true;
icraggs 0:ae83cacd60d2 299 }
icraggs 0:ae83cacd60d2 300
icraggs 0:ae83cacd60d2 301
icraggs 0:ae83cacd60d2 302 template<class Network, class Timer, int a, int b>
icraggs 0:ae83cacd60d2 303 bool MQTTSN::Client<Network, Timer, a, b>::useQoS2msgid(unsigned short id)
icraggs 0:ae83cacd60d2 304 {
icraggs 0:ae83cacd60d2 305 for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i)
icraggs 0:ae83cacd60d2 306 {
icraggs 0:ae83cacd60d2 307 if (incomingQoS2messages[i] == 0)
icraggs 0:ae83cacd60d2 308 {
icraggs 0:ae83cacd60d2 309 incomingQoS2messages[i] = id;
icraggs 0:ae83cacd60d2 310 return true;
icraggs 0:ae83cacd60d2 311 }
icraggs 0:ae83cacd60d2 312 }
icraggs 0:ae83cacd60d2 313 return false;
icraggs 0:ae83cacd60d2 314 }
icraggs 0:ae83cacd60d2 315 #endif
icraggs 0:ae83cacd60d2 316
icraggs 0:ae83cacd60d2 317
icraggs 0:ae83cacd60d2 318 template<class Network, class Timer, int a, int b>
icraggs 0:ae83cacd60d2 319 int MQTTSN::Client<Network, Timer, a, b>::sendPacket(int length, Timer& timer)
icraggs 0:ae83cacd60d2 320 {
icraggs 0:ae83cacd60d2 321 int rc = FAILURE,
icraggs 0:ae83cacd60d2 322 sent = 0;
icraggs 0:ae83cacd60d2 323
icraggs 0:ae83cacd60d2 324 do
icraggs 0:ae83cacd60d2 325 {
icraggs 0:ae83cacd60d2 326 sent = ipstack.write(sendbuf, length, timer.left_ms());
icraggs 0:ae83cacd60d2 327 printf("sendPacket, rc %d from write of %d bytes\n", sent, length);
icraggs 0:ae83cacd60d2 328 if (sent < 0) // there was an error writing the data
icraggs 0:ae83cacd60d2 329 break;
icraggs 0:ae83cacd60d2 330 }
icraggs 0:ae83cacd60d2 331 while (sent != length && !timer.expired());
icraggs 0:ae83cacd60d2 332
icraggs 0:ae83cacd60d2 333 if (sent == length)
icraggs 0:ae83cacd60d2 334 {
icraggs 0:ae83cacd60d2 335 if (this->duration > 0)
icraggs 0:ae83cacd60d2 336 last_sent.countdown(this->duration); // record the fact that we have successfully sent the packet
icraggs 0:ae83cacd60d2 337 rc = SUCCESS;
icraggs 0:ae83cacd60d2 338 }
icraggs 0:ae83cacd60d2 339 else
icraggs 0:ae83cacd60d2 340 rc = FAILURE;
icraggs 0:ae83cacd60d2 341
icraggs 0:ae83cacd60d2 342 #if defined(MQTT_DEBUG)
icraggs 0:ae83cacd60d2 343 char printbuf[50];
icraggs 0:ae83cacd60d2 344 DEBUG("Rc %d from sending packet %s\n", rc, MQTTPacket_toString(printbuf, sizeof(printbuf), sendbuf, length));
icraggs 0:ae83cacd60d2 345 #endif
icraggs 0:ae83cacd60d2 346 return rc;
icraggs 0:ae83cacd60d2 347 }
icraggs 0:ae83cacd60d2 348
icraggs 0:ae83cacd60d2 349
icraggs 0:ae83cacd60d2 350 /**
icraggs 0:ae83cacd60d2 351 * If any read fails in this method, then we should disconnect from the network, as on reconnect
icraggs 0:ae83cacd60d2 352 * the packets can be retried.
icraggs 0:ae83cacd60d2 353 * @param timeout the max time to wait for the packet read to complete, in milliseconds
icraggs 0:ae83cacd60d2 354 * @return the MQTT packet type, or -1 if none
icraggs 0:ae83cacd60d2 355 */
icraggs 0:ae83cacd60d2 356 template<class Network, class Timer, int MAX_PACKET_SIZE, int b>
icraggs 0:ae83cacd60d2 357 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, b>::readPacket(Timer& timer)
icraggs 0:ae83cacd60d2 358 {
icraggs 0:ae83cacd60d2 359 int rc = FAILURE;
icraggs 0:ae83cacd60d2 360 int len = 0; // the length of the whole packet including length field
icraggs 0:ae83cacd60d2 361 int lenlen = 0;
icraggs 0:ae83cacd60d2 362 int datalen = 0;
icraggs 0:ae83cacd60d2 363
icraggs 0:ae83cacd60d2 364 #define MQTTSN_MIN_PACKET_LENGTH 3
icraggs 0:ae83cacd60d2 365 // 1. read the packet, datagram style
icraggs 0:ae83cacd60d2 366 if ((len = ipstack.read(readbuf, MAX_PACKET_SIZE, timer.left_ms())) < MQTTSN_MIN_PACKET_LENGTH)
icraggs 0:ae83cacd60d2 367 goto exit;
icraggs 0:ae83cacd60d2 368
icraggs 0:ae83cacd60d2 369 // 2. read the length. This is variable in itself
icraggs 0:ae83cacd60d2 370 lenlen = MQTTSNPacket_decode(readbuf, len, &datalen);
icraggs 0:ae83cacd60d2 371 if (datalen != len)
icraggs 0:ae83cacd60d2 372 goto exit; // there was an error
icraggs 0:ae83cacd60d2 373
icraggs 0:ae83cacd60d2 374 rc = readbuf[lenlen];
icraggs 0:ae83cacd60d2 375 if (this->duration > 0)
icraggs 0:ae83cacd60d2 376 last_received.countdown(this->duration); // record the fact that we have successfully received a packet
icraggs 0:ae83cacd60d2 377 exit:
icraggs 0:ae83cacd60d2 378
icraggs 0:ae83cacd60d2 379 #if defined(MQTT_DEBUG)
icraggs 0:ae83cacd60d2 380 char printbuf[50];
icraggs 0:ae83cacd60d2 381 DEBUG("Rc %d from receiving packet %s\n", rc, MQTTPacket_toString(printbuf, sizeof(printbuf), readbuf, len));
icraggs 0:ae83cacd60d2 382 #endif
icraggs 0:ae83cacd60d2 383 return rc;
icraggs 0:ae83cacd60d2 384 }
icraggs 0:ae83cacd60d2 385
icraggs 0:ae83cacd60d2 386
icraggs 0:ae83cacd60d2 387 // assume topic filter and name is in correct format
icraggs 0:ae83cacd60d2 388 // # can only be at end
icraggs 0:ae83cacd60d2 389 // + and # can only be next to separator
icraggs 0:ae83cacd60d2 390 template<class Network, class Timer, int a, int b>
icraggs 0:ae83cacd60d2 391 bool MQTTSN::Client<Network, Timer, a, b>::isTopicMatched(char* topicFilter, MQTTSNString& topicName)
icraggs 0:ae83cacd60d2 392 {
icraggs 0:ae83cacd60d2 393 char* curf = topicFilter;
icraggs 0:ae83cacd60d2 394 char* curn = topicName.lenstring.data;
icraggs 0:ae83cacd60d2 395 char* curn_end = curn + topicName.lenstring.len;
icraggs 0:ae83cacd60d2 396
icraggs 0:ae83cacd60d2 397 while (*curf && curn < curn_end)
icraggs 0:ae83cacd60d2 398 {
icraggs 0:ae83cacd60d2 399 if (*curn == '/' && *curf != '/')
icraggs 0:ae83cacd60d2 400 break;
icraggs 0:ae83cacd60d2 401 if (*curf != '+' && *curf != '#' && *curf != *curn)
icraggs 0:ae83cacd60d2 402 break;
icraggs 0:ae83cacd60d2 403 if (*curf == '+')
icraggs 0:ae83cacd60d2 404 { // skip until we meet the next separator, or end of string
icraggs 0:ae83cacd60d2 405 char* nextpos = curn + 1;
icraggs 0:ae83cacd60d2 406 while (nextpos < curn_end && *nextpos != '/')
icraggs 0:ae83cacd60d2 407 nextpos = ++curn + 1;
icraggs 0:ae83cacd60d2 408 }
icraggs 0:ae83cacd60d2 409 else if (*curf == '#')
icraggs 0:ae83cacd60d2 410 curn = curn_end - 1; // skip until end of string
icraggs 0:ae83cacd60d2 411 curf++;
icraggs 0:ae83cacd60d2 412 curn++;
icraggs 0:ae83cacd60d2 413 };
icraggs 0:ae83cacd60d2 414
icraggs 0:ae83cacd60d2 415 return (curn == curn_end) && (*curf == '\0');
icraggs 0:ae83cacd60d2 416 }
icraggs 0:ae83cacd60d2 417
icraggs 0:ae83cacd60d2 418
icraggs 0:ae83cacd60d2 419
icraggs 0:ae83cacd60d2 420 template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS>
icraggs 0:ae83cacd60d2 421 int MQTTSN::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::deliverMessage(MQTTSN_topicid& topic, Message& message)
icraggs 0:ae83cacd60d2 422 {
icraggs 0:ae83cacd60d2 423 int rc = FAILURE;
icraggs 0:ae83cacd60d2 424 printf("deliverMessage topic id is %d\n", topic.data.id);
icraggs 0:ae83cacd60d2 425
icraggs 0:ae83cacd60d2 426 // we have to find the right message handler - indexed by topic
icraggs 0:ae83cacd60d2 427 for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 0:ae83cacd60d2 428 {
icraggs 0:ae83cacd60d2 429 if (messageHandlers[i].topicFilter != 0)
icraggs 0:ae83cacd60d2 430 printf("messageHandler %d topic id is %d\n", i, messageHandlers[i].topicFilter->data.id);
icraggs 0:ae83cacd60d2 431 if (messageHandlers[i].topicFilter != 0 && (topic.data.id == messageHandlers[i].topicFilter->data.id))
icraggs 0:ae83cacd60d2 432 //MQTTSNtopic_equals(&topic, messageHandlers[i].topicFilter) ||
icraggs 0:ae83cacd60d2 433 // isTopicMatched(messageHandlers[i].topicFilter, topic)))
icraggs 0:ae83cacd60d2 434 {
icraggs 0:ae83cacd60d2 435 if (messageHandlers[i].fp.attached())
icraggs 0:ae83cacd60d2 436 {
icraggs 0:ae83cacd60d2 437 MessageData md(topic, message);
icraggs 0:ae83cacd60d2 438 messageHandlers[i].fp(md);
icraggs 0:ae83cacd60d2 439 rc = SUCCESS;
icraggs 0:ae83cacd60d2 440 }
icraggs 0:ae83cacd60d2 441 }
icraggs 0:ae83cacd60d2 442 }
icraggs 0:ae83cacd60d2 443
icraggs 0:ae83cacd60d2 444 if (rc == FAILURE && defaultMessageHandler.attached())
icraggs 0:ae83cacd60d2 445 {
icraggs 0:ae83cacd60d2 446 MessageData md(topic, message);
icraggs 0:ae83cacd60d2 447 defaultMessageHandler(md);
icraggs 0:ae83cacd60d2 448 rc = SUCCESS;
icraggs 0:ae83cacd60d2 449 }
icraggs 0:ae83cacd60d2 450
icraggs 0:ae83cacd60d2 451 return rc;
icraggs 0:ae83cacd60d2 452 }
icraggs 0:ae83cacd60d2 453
icraggs 0:ae83cacd60d2 454
icraggs 0:ae83cacd60d2 455
icraggs 0:ae83cacd60d2 456 template<class Network, class Timer, int a, int b>
icraggs 0:ae83cacd60d2 457 int MQTTSN::Client<Network, Timer, a, b>::yield(unsigned long timeout_ms)
icraggs 0:ae83cacd60d2 458 {
icraggs 0:ae83cacd60d2 459 int rc = SUCCESS;
icraggs 0:ae83cacd60d2 460 Timer timer = Timer();
icraggs 0:ae83cacd60d2 461
icraggs 0:ae83cacd60d2 462 timer.countdown_ms(timeout_ms);
icraggs 0:ae83cacd60d2 463 while (!timer.expired())
icraggs 0:ae83cacd60d2 464 {
icraggs 0:ae83cacd60d2 465 if (cycle(timer) == FAILURE)
icraggs 0:ae83cacd60d2 466 {
icraggs 0:ae83cacd60d2 467 rc = FAILURE;
icraggs 0:ae83cacd60d2 468 break;
icraggs 0:ae83cacd60d2 469 }
icraggs 0:ae83cacd60d2 470 }
icraggs 0:ae83cacd60d2 471
icraggs 0:ae83cacd60d2 472 return rc;
icraggs 0:ae83cacd60d2 473 }
icraggs 0:ae83cacd60d2 474
icraggs 0:ae83cacd60d2 475
icraggs 0:ae83cacd60d2 476 template<class Network, class Timer, int MAX_PACKET_SIZE, int b>
icraggs 0:ae83cacd60d2 477 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, b>::cycle(Timer& timer)
icraggs 0:ae83cacd60d2 478 {
icraggs 0:ae83cacd60d2 479 /* get one piece of work off the wire and one pass through */
icraggs 0:ae83cacd60d2 480
icraggs 0:ae83cacd60d2 481 // read the socket, see what work is due
icraggs 0:ae83cacd60d2 482 unsigned short packet_type = readPacket(timer);
icraggs 0:ae83cacd60d2 483
icraggs 0:ae83cacd60d2 484 int len = 0;
icraggs 0:ae83cacd60d2 485 int rc = SUCCESS;
icraggs 0:ae83cacd60d2 486
icraggs 0:ae83cacd60d2 487 switch (packet_type)
icraggs 0:ae83cacd60d2 488 {
icraggs 0:ae83cacd60d2 489 case MQTTSN_CONNACK:
icraggs 0:ae83cacd60d2 490 case MQTTSN_PUBACK:
icraggs 0:ae83cacd60d2 491 case MQTTSN_SUBACK:
icraggs 0:ae83cacd60d2 492 case MQTTSN_REGACK:
icraggs 0:ae83cacd60d2 493 break;
icraggs 0:ae83cacd60d2 494 case MQTTSN_REGISTER:
icraggs 0:ae83cacd60d2 495 {
icraggs 0:ae83cacd60d2 496 unsigned short topicid, packetid;
icraggs 0:ae83cacd60d2 497 MQTTSNString topicName;
icraggs 0:ae83cacd60d2 498 unsigned char reg_rc = MQTTSN_RC_ACCEPTED;
icraggs 0:ae83cacd60d2 499 if (MQTTSNDeserialize_register(&topicid, &packetid, &topicName, readbuf, MAX_PACKET_SIZE) != 1)
icraggs 0:ae83cacd60d2 500 goto exit;
icraggs 0:ae83cacd60d2 501 len = MQTTSNSerialize_regack(sendbuf, MAX_PACKET_SIZE, topicid, packetid, reg_rc);
icraggs 0:ae83cacd60d2 502 if (len <= 0)
icraggs 0:ae83cacd60d2 503 rc = FAILURE;
icraggs 0:ae83cacd60d2 504 else
icraggs 0:ae83cacd60d2 505 rc = sendPacket(len, timer);
icraggs 0:ae83cacd60d2 506 break;
icraggs 0:ae83cacd60d2 507 }
icraggs 0:ae83cacd60d2 508 case MQTTSN_PUBLISH:
icraggs 0:ae83cacd60d2 509 MQTTSN_topicid topicid;
icraggs 0:ae83cacd60d2 510 Message msg;
icraggs 0:ae83cacd60d2 511 if (MQTTSNDeserialize_publish((unsigned char*)&msg.dup, (int*)&msg.qos, (unsigned char*)&msg.retained, &msg.id, &topicid,
icraggs 0:ae83cacd60d2 512 (unsigned char**)&msg.payload, (int*)&msg.payloadlen, readbuf, MAX_PACKET_SIZE) != 1)
icraggs 0:ae83cacd60d2 513 goto exit;
icraggs 0:ae83cacd60d2 514 #if MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 515 if (msg.qos != QOS2)
icraggs 0:ae83cacd60d2 516 #endif
icraggs 0:ae83cacd60d2 517 deliverMessage(topicid, msg);
icraggs 0:ae83cacd60d2 518 #if MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 519 else if (isQoS2msgidFree(msg.id))
icraggs 0:ae83cacd60d2 520 {
icraggs 0:ae83cacd60d2 521 if (useQoS2msgid(msg.id))
icraggs 0:ae83cacd60d2 522 deliverMessage(topicid, msg);
icraggs 0:ae83cacd60d2 523 else
icraggs 0:ae83cacd60d2 524 WARN("Maximum number of incoming QoS2 messages exceeded");
icraggs 0:ae83cacd60d2 525 }
icraggs 0:ae83cacd60d2 526 #endif
icraggs 0:ae83cacd60d2 527 #if MQTTSNCLIENT_QOS1 || MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 528 if (msg.qos != QOS0)
icraggs 0:ae83cacd60d2 529 {
icraggs 0:ae83cacd60d2 530 if (msg.qos == QOS1)
icraggs 0:ae83cacd60d2 531 len = MQTTSNSerialize_puback(sendbuf, MAX_PACKET_SIZE, topicid.data.id, msg.id, 0);
icraggs 0:ae83cacd60d2 532 else if (msg.qos == QOS2)
icraggs 0:ae83cacd60d2 533 len = MQTTSNSerialize_pubrec(sendbuf, MAX_PACKET_SIZE, msg.id);
icraggs 0:ae83cacd60d2 534 if (len <= 0)
icraggs 0:ae83cacd60d2 535 rc = FAILURE;
icraggs 0:ae83cacd60d2 536 else
icraggs 0:ae83cacd60d2 537 {
icraggs 0:ae83cacd60d2 538 printf("sending puback len %d\n", len);
icraggs 0:ae83cacd60d2 539 rc = sendPacket(len, timer);
icraggs 0:ae83cacd60d2 540 printf("rc %d from sending puback\n", rc);
icraggs 0:ae83cacd60d2 541 }
icraggs 0:ae83cacd60d2 542 if (rc == FAILURE)
icraggs 0:ae83cacd60d2 543 goto exit; // there was a problem
icraggs 0:ae83cacd60d2 544 }
icraggs 0:ae83cacd60d2 545 break;
icraggs 0:ae83cacd60d2 546 #endif
icraggs 0:ae83cacd60d2 547 #if MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 548 case MQTTSN_PUBREC:
icraggs 0:ae83cacd60d2 549 unsigned short mypacketid;
icraggs 0:ae83cacd60d2 550 unsigned char type;
icraggs 0:ae83cacd60d2 551 if (MQTTSNDeserialize_ack(&type, &mypacketid, readbuf, MAX_PACKET_SIZE) != 1)
icraggs 0:ae83cacd60d2 552 rc = FAILURE;
icraggs 0:ae83cacd60d2 553 else if ((len = MQTTSNSerialize_pubrel(sendbuf, MAX_PACKET_SIZE, mypacketid)) <= 0)
icraggs 0:ae83cacd60d2 554 rc = FAILURE;
icraggs 0:ae83cacd60d2 555 else if ((rc = sendPacket(len, timer)) != SUCCESS) // send the PUBREL packet
icraggs 0:ae83cacd60d2 556 rc = FAILURE; // there was a problem
icraggs 0:ae83cacd60d2 557 if (rc == FAILURE)
icraggs 0:ae83cacd60d2 558 goto exit; // there was a problem
icraggs 0:ae83cacd60d2 559 break;
icraggs 0:ae83cacd60d2 560 case MQTTSN_PUBCOMP:
icraggs 0:ae83cacd60d2 561 break;
icraggs 0:ae83cacd60d2 562 #endif
icraggs 0:ae83cacd60d2 563 case MQTTSN_PINGRESP:
icraggs 0:ae83cacd60d2 564 ping_outstanding = false;
icraggs 0:ae83cacd60d2 565 break;
icraggs 0:ae83cacd60d2 566 }
icraggs 0:ae83cacd60d2 567 keepalive();
icraggs 0:ae83cacd60d2 568 exit:
icraggs 0:ae83cacd60d2 569 if (rc == SUCCESS)
icraggs 0:ae83cacd60d2 570 rc = packet_type;
icraggs 0:ae83cacd60d2 571 return rc;
icraggs 0:ae83cacd60d2 572 }
icraggs 0:ae83cacd60d2 573
icraggs 0:ae83cacd60d2 574
icraggs 0:ae83cacd60d2 575 template<class Network, class Timer, int MAX_PACKET_SIZE, int b>
icraggs 0:ae83cacd60d2 576 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, b>::keepalive()
icraggs 0:ae83cacd60d2 577 {
icraggs 0:ae83cacd60d2 578 int rc = FAILURE;
icraggs 0:ae83cacd60d2 579
icraggs 0:ae83cacd60d2 580 if (duration == 0)
icraggs 0:ae83cacd60d2 581 {
icraggs 0:ae83cacd60d2 582 rc = SUCCESS;
icraggs 0:ae83cacd60d2 583 goto exit;
icraggs 0:ae83cacd60d2 584 }
icraggs 0:ae83cacd60d2 585
icraggs 0:ae83cacd60d2 586 if (last_sent.expired() || last_received.expired())
icraggs 0:ae83cacd60d2 587 {
icraggs 0:ae83cacd60d2 588 if (!ping_outstanding)
icraggs 0:ae83cacd60d2 589 {
icraggs 0:ae83cacd60d2 590 MQTTSNString clientid = MQTTSNString_initializer;
icraggs 0:ae83cacd60d2 591 Timer timer = Timer(1000);
icraggs 0:ae83cacd60d2 592 int len = MQTTSNSerialize_pingreq(sendbuf, MAX_PACKET_SIZE, clientid);
icraggs 0:ae83cacd60d2 593 if (len > 0 && (rc = sendPacket(len, timer)) == SUCCESS) // send the ping packet
icraggs 0:ae83cacd60d2 594 ping_outstanding = true;
icraggs 0:ae83cacd60d2 595 }
icraggs 0:ae83cacd60d2 596 }
icraggs 0:ae83cacd60d2 597
icraggs 0:ae83cacd60d2 598 exit:
icraggs 0:ae83cacd60d2 599 return rc;
icraggs 0:ae83cacd60d2 600 }
icraggs 0:ae83cacd60d2 601
icraggs 0:ae83cacd60d2 602
icraggs 0:ae83cacd60d2 603 // only used in single-threaded mode where one command at a time is in process
icraggs 0:ae83cacd60d2 604 template<class Network, class Timer, int a, int b>
icraggs 0:ae83cacd60d2 605 int MQTTSN::Client<Network, Timer, a, b>::waitfor(int packet_type, Timer& timer)
icraggs 0:ae83cacd60d2 606 {
icraggs 0:ae83cacd60d2 607 int rc = FAILURE;
icraggs 0:ae83cacd60d2 608
icraggs 0:ae83cacd60d2 609 do
icraggs 0:ae83cacd60d2 610 {
icraggs 0:ae83cacd60d2 611 if (timer.expired())
icraggs 0:ae83cacd60d2 612 break; // we timed out
icraggs 0:ae83cacd60d2 613 }
icraggs 0:ae83cacd60d2 614 while ((rc = cycle(timer)) != packet_type);
icraggs 0:ae83cacd60d2 615
icraggs 0:ae83cacd60d2 616 return rc;
icraggs 0:ae83cacd60d2 617 }
icraggs 0:ae83cacd60d2 618
icraggs 0:ae83cacd60d2 619
icraggs 0:ae83cacd60d2 620 template<class Network, class Timer, int MAX_PACKET_SIZE, int b>
icraggs 0:ae83cacd60d2 621 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, b>::connect(MQTTSNPacket_connectData& options)
icraggs 0:ae83cacd60d2 622 {
icraggs 0:ae83cacd60d2 623 Timer connect_timer = Timer(command_timeout_ms);
icraggs 0:ae83cacd60d2 624 int rc = FAILURE;
icraggs 0:ae83cacd60d2 625 int len = 0;
icraggs 0:ae83cacd60d2 626
icraggs 0:ae83cacd60d2 627 if (isconnected) // don't send connect packet again if we are already connected
icraggs 0:ae83cacd60d2 628 goto exit;
icraggs 0:ae83cacd60d2 629
icraggs 0:ae83cacd60d2 630 this->duration = options.duration;
icraggs 0:ae83cacd60d2 631 this->cleansession = options.cleansession;
icraggs 0:ae83cacd60d2 632 if ((len = MQTTSNSerialize_connect(sendbuf, MAX_PACKET_SIZE, &options)) <= 0)
icraggs 0:ae83cacd60d2 633 goto exit;
icraggs 0:ae83cacd60d2 634 if ((rc = sendPacket(len, connect_timer)) != SUCCESS) // send the connect packet
icraggs 0:ae83cacd60d2 635 goto exit; // there was a problem
icraggs 0:ae83cacd60d2 636
icraggs 0:ae83cacd60d2 637 if (this->duration > 0)
icraggs 0:ae83cacd60d2 638 last_received.countdown(this->duration);
icraggs 0:ae83cacd60d2 639 // this will be a blocking call, wait for the connack
icraggs 0:ae83cacd60d2 640 if (waitfor(MQTTSN_CONNACK, connect_timer) == MQTTSN_CONNACK)
icraggs 0:ae83cacd60d2 641 {
icraggs 0:ae83cacd60d2 642 //unsigned char connack_rc = 255;
icraggs 0:ae83cacd60d2 643 int connack_rc = 255;
icraggs 0:ae83cacd60d2 644 if (MQTTSNDeserialize_connack(&connack_rc, readbuf, MAX_PACKET_SIZE) == 1)
icraggs 0:ae83cacd60d2 645 rc = connack_rc;
icraggs 0:ae83cacd60d2 646 else
icraggs 0:ae83cacd60d2 647 rc = FAILURE;
icraggs 0:ae83cacd60d2 648 }
icraggs 0:ae83cacd60d2 649 else
icraggs 0:ae83cacd60d2 650 rc = FAILURE;
icraggs 0:ae83cacd60d2 651
icraggs 0:ae83cacd60d2 652 #if MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 653 // resend an inflight publish
icraggs 0:ae83cacd60d2 654 if (inflightMsgid >0 && inflightQoS == QOS2 && pubrel)
icraggs 0:ae83cacd60d2 655 {
icraggs 0:ae83cacd60d2 656 if ((len = MQTTSNSerialize_pubrel(sendbuf, MAX_PACKET_SIZE, inflightMsgid)) <= 0)
icraggs 0:ae83cacd60d2 657 rc = FAILURE;
icraggs 0:ae83cacd60d2 658 else
icraggs 0:ae83cacd60d2 659 rc = publish(len, connect_timer, inflightQoS);
icraggs 0:ae83cacd60d2 660 }
icraggs 0:ae83cacd60d2 661 else
icraggs 0:ae83cacd60d2 662 #endif
icraggs 0:ae83cacd60d2 663 #if MQTTSNCLIENT_QOS1 || MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 664 if (inflightMsgid > 0)
icraggs 0:ae83cacd60d2 665 {
icraggs 0:ae83cacd60d2 666 memcpy(sendbuf, pubbuf, MAX_PACKET_SIZE);
icraggs 0:ae83cacd60d2 667 rc = publish(inflightLen, connect_timer, inflightQoS);
icraggs 0:ae83cacd60d2 668 }
icraggs 0:ae83cacd60d2 669 #endif
icraggs 0:ae83cacd60d2 670
icraggs 0:ae83cacd60d2 671 exit:
icraggs 0:ae83cacd60d2 672 if (rc == SUCCESS)
icraggs 0:ae83cacd60d2 673 isconnected = true;
icraggs 0:ae83cacd60d2 674 return rc;
icraggs 0:ae83cacd60d2 675 }
icraggs 0:ae83cacd60d2 676
icraggs 0:ae83cacd60d2 677
icraggs 0:ae83cacd60d2 678 template<class Network, class Timer, int MAX_PACKET_SIZE, int b>
icraggs 0:ae83cacd60d2 679 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, b>::connect()
icraggs 0:ae83cacd60d2 680 {
icraggs 0:ae83cacd60d2 681 MQTTPacket_connectData default_options = MQTTPacket_connectData_initializer;
icraggs 0:ae83cacd60d2 682 return connect(default_options);
icraggs 0:ae83cacd60d2 683 }
icraggs 0:ae83cacd60d2 684
icraggs 0:ae83cacd60d2 685
icraggs 0:ae83cacd60d2 686 template<class Network, class Timer, int MAX_PACKET_SIZE, int MAX_MESSAGE_HANDLERS>
icraggs 0:ae83cacd60d2 687 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::subscribe(MQTTSN_topicid& topicFilter, enum QoS qos, enum QoS &grantedQoS, messageHandler messageHandler)
icraggs 0:ae83cacd60d2 688 {
icraggs 0:ae83cacd60d2 689 int rc = FAILURE;
icraggs 0:ae83cacd60d2 690 Timer timer = Timer(command_timeout_ms);
icraggs 0:ae83cacd60d2 691 int len = 0;
ImranBilalButt 6:1957f23ac496 692 /*
ImranBilalButt 6:1957f23ac496 693 if (!isconnected) {
ImranBilalButt 6:1957f23ac496 694 printf("hello 01");
icraggs 0:ae83cacd60d2 695 goto exit;
ImranBilalButt 6:1957f23ac496 696 }
ImranBilalButt 6:1957f23ac496 697 */
icraggs 0:ae83cacd60d2 698 bool freeHandler = false;
icraggs 0:ae83cacd60d2 699 for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 0:ae83cacd60d2 700 {
icraggs 0:ae83cacd60d2 701 if (messageHandlers[i].topicFilter == 0)
icraggs 0:ae83cacd60d2 702 {
icraggs 0:ae83cacd60d2 703 freeHandler = true;
icraggs 0:ae83cacd60d2 704 break;
icraggs 0:ae83cacd60d2 705 }
icraggs 0:ae83cacd60d2 706 }
icraggs 0:ae83cacd60d2 707 if (!freeHandler)
ImranBilalButt 6:1957f23ac496 708 {
ImranBilalButt 6:1957f23ac496 709 printf("hello 02");
ImranBilalButt 6:1957f23ac496 710 // No message handler free
icraggs 0:ae83cacd60d2 711 rc = MAX_SUBSCRIPTIONS_EXCEEDED;
icraggs 0:ae83cacd60d2 712 goto exit;
icraggs 0:ae83cacd60d2 713 }
icraggs 0:ae83cacd60d2 714
icraggs 0:ae83cacd60d2 715 len = MQTTSNSerialize_subscribe(sendbuf, MAX_PACKET_SIZE, 0, qos, packetid.getNext(), &topicFilter);
ImranBilalButt 6:1957f23ac496 716 if (len <= 0) {
ImranBilalButt 6:1957f23ac496 717 printf("hello 03");
icraggs 0:ae83cacd60d2 718 goto exit;
ImranBilalButt 6:1957f23ac496 719 }
ImranBilalButt 6:1957f23ac496 720
ImranBilalButt 6:1957f23ac496 721 if ((rc = sendPacket(len, timer)) != SUCCESS) { // send the subscribe packet
ImranBilalButt 6:1957f23ac496 722 printf("hello 04");
icraggs 0:ae83cacd60d2 723 goto exit; // there was a problem
ImranBilalButt 6:1957f23ac496 724 }
icraggs 0:ae83cacd60d2 725
icraggs 0:ae83cacd60d2 726 if (waitfor(MQTTSN_SUBACK, timer) == MQTTSN_SUBACK) // wait for suback
icraggs 0:ae83cacd60d2 727 {
icraggs 0:ae83cacd60d2 728 unsigned short mypacketid;
icraggs 0:ae83cacd60d2 729 unsigned char suback_rc;
ImranBilalButt 6:1957f23ac496 730 if (MQTTSNDeserialize_suback((int*)&grantedQoS, &topicFilter.data.id, &mypacketid, &suback_rc, readbuf, MAX_PACKET_SIZE) != 1) {
ImranBilalButt 6:1957f23ac496 731 printf("hello 06");
icraggs 0:ae83cacd60d2 732 rc = FAILURE;
ImranBilalButt 6:1957f23ac496 733 }
icraggs 0:ae83cacd60d2 734 else
icraggs 0:ae83cacd60d2 735 rc = suback_rc;
icraggs 0:ae83cacd60d2 736 if (suback_rc == MQTTSN_RC_ACCEPTED)
icraggs 0:ae83cacd60d2 737 {
icraggs 0:ae83cacd60d2 738 for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 0:ae83cacd60d2 739 {
icraggs 0:ae83cacd60d2 740 if (messageHandlers[i].topicFilter == 0)
icraggs 0:ae83cacd60d2 741 {
icraggs 0:ae83cacd60d2 742 messageHandlers[i].topicFilter = &topicFilter;
icraggs 0:ae83cacd60d2 743 messageHandlers[i].fp.attach(messageHandler);
icraggs 0:ae83cacd60d2 744 rc = 0;
icraggs 0:ae83cacd60d2 745 break;
icraggs 0:ae83cacd60d2 746 }
icraggs 0:ae83cacd60d2 747 }
icraggs 0:ae83cacd60d2 748 }
icraggs 0:ae83cacd60d2 749 }
ImranBilalButt 6:1957f23ac496 750 else {
ImranBilalButt 6:1957f23ac496 751 printf("hello 07");
icraggs 0:ae83cacd60d2 752 rc = FAILURE;
ImranBilalButt 6:1957f23ac496 753 }
icraggs 0:ae83cacd60d2 754
icraggs 0:ae83cacd60d2 755 exit:
icraggs 0:ae83cacd60d2 756 if (rc != SUCCESS)
icraggs 0:ae83cacd60d2 757 isconnected = false;
icraggs 0:ae83cacd60d2 758 return rc;
icraggs 0:ae83cacd60d2 759 }
icraggs 0:ae83cacd60d2 760
icraggs 0:ae83cacd60d2 761
icraggs 0:ae83cacd60d2 762 template<class Network, class Timer, int MAX_PACKET_SIZE, int MAX_MESSAGE_HANDLERS>
icraggs 0:ae83cacd60d2 763 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::unsubscribe(MQTTSN_topicid& topicFilter)
icraggs 0:ae83cacd60d2 764 {
icraggs 0:ae83cacd60d2 765 int rc = FAILURE;
icraggs 0:ae83cacd60d2 766 Timer timer = Timer(command_timeout_ms);
icraggs 0:ae83cacd60d2 767 int len = 0;
icraggs 0:ae83cacd60d2 768
icraggs 0:ae83cacd60d2 769 if (!isconnected)
icraggs 0:ae83cacd60d2 770 goto exit;
icraggs 0:ae83cacd60d2 771
icraggs 0:ae83cacd60d2 772 if ((len = MQTTSNSerialize_unsubscribe(sendbuf, MAX_PACKET_SIZE, packetid.getNext(), &topicFilter)) <= 0)
icraggs 0:ae83cacd60d2 773 goto exit;
icraggs 0:ae83cacd60d2 774 if ((rc = sendPacket(len, timer)) != SUCCESS) // send the unsubscribe packet
icraggs 0:ae83cacd60d2 775 goto exit; // there was a problem
icraggs 0:ae83cacd60d2 776
icraggs 0:ae83cacd60d2 777 if (waitfor(MQTTSN_UNSUBACK, timer) == MQTTSN_UNSUBACK)
icraggs 0:ae83cacd60d2 778 {
icraggs 0:ae83cacd60d2 779 unsigned short mypacketid; // should be the same as the packetid above
icraggs 0:ae83cacd60d2 780 if (MQTTSNDeserialize_unsuback(&mypacketid, readbuf, MAX_PACKET_SIZE) == 1)
icraggs 0:ae83cacd60d2 781 rc = 0;
icraggs 0:ae83cacd60d2 782 }
icraggs 0:ae83cacd60d2 783 else
icraggs 0:ae83cacd60d2 784 rc = FAILURE;
icraggs 0:ae83cacd60d2 785
icraggs 0:ae83cacd60d2 786 exit:
icraggs 0:ae83cacd60d2 787 if (rc != SUCCESS)
icraggs 0:ae83cacd60d2 788 isconnected = false;
icraggs 0:ae83cacd60d2 789 return rc;
icraggs 0:ae83cacd60d2 790 }
icraggs 0:ae83cacd60d2 791
icraggs 0:ae83cacd60d2 792
icraggs 0:ae83cacd60d2 793 template<class Network, class Timer, int MAX_PACKET_SIZE, int b>
icraggs 0:ae83cacd60d2 794 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, b>::publish(int len, Timer& timer, enum QoS qos)
icraggs 0:ae83cacd60d2 795 {
icraggs 0:ae83cacd60d2 796 int rc;
icraggs 0:ae83cacd60d2 797
icraggs 0:ae83cacd60d2 798 if ((rc = sendPacket(len, timer)) != SUCCESS) // send the publish packet
icraggs 0:ae83cacd60d2 799 goto exit; // there was a problem
icraggs 0:ae83cacd60d2 800
icraggs 0:ae83cacd60d2 801 #if MQTTSNCLIENT_QOS1
icraggs 0:ae83cacd60d2 802 if (qos == QOS1)
icraggs 0:ae83cacd60d2 803 {
icraggs 0:ae83cacd60d2 804 if (waitfor(MQTTSN_PUBACK, timer) == MQTTSN_PUBACK)
icraggs 0:ae83cacd60d2 805 {
icraggs 0:ae83cacd60d2 806 unsigned short mypacketid;
icraggs 0:ae83cacd60d2 807 unsigned char type;
icraggs 0:ae83cacd60d2 808 if (MQTTSNDeserialize_ack(&type, &mypacketid, readbuf, MAX_PACKET_SIZE) != 1)
icraggs 0:ae83cacd60d2 809 rc = FAILURE;
icraggs 0:ae83cacd60d2 810 else if (inflightMsgid == mypacketid)
icraggs 0:ae83cacd60d2 811 inflightMsgid = 0;
icraggs 0:ae83cacd60d2 812 }
icraggs 0:ae83cacd60d2 813 else
icraggs 0:ae83cacd60d2 814 rc = FAILURE;
icraggs 0:ae83cacd60d2 815 }
icraggs 0:ae83cacd60d2 816 #elif MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 817 else if (qos == QOS2)
icraggs 0:ae83cacd60d2 818 {
icraggs 0:ae83cacd60d2 819 if (waitfor(PUBCOMP, timer) == PUBCOMP)
icraggs 0:ae83cacd60d2 820 {
icraggs 0:ae83cacd60d2 821 unsigned short mypacketid;
icraggs 0:ae83cacd60d2 822 unsigned char type;
icraggs 0:ae83cacd60d2 823 if (MQTTDeserialize_ack(&type, &mypacketid, readbuf, MAX_PACKET_SIZE) != 1)
icraggs 0:ae83cacd60d2 824 rc = FAILURE;
icraggs 0:ae83cacd60d2 825 else if (inflightMsgid == mypacketid)
icraggs 0:ae83cacd60d2 826 inflightMsgid = 0;
icraggs 0:ae83cacd60d2 827 }
icraggs 0:ae83cacd60d2 828 else
icraggs 0:ae83cacd60d2 829 rc = FAILURE;
icraggs 0:ae83cacd60d2 830 }
icraggs 0:ae83cacd60d2 831 #endif
icraggs 0:ae83cacd60d2 832
icraggs 0:ae83cacd60d2 833 exit:
icraggs 0:ae83cacd60d2 834 if (rc != SUCCESS)
icraggs 0:ae83cacd60d2 835 isconnected = false;
icraggs 0:ae83cacd60d2 836 return rc;
icraggs 0:ae83cacd60d2 837 }
icraggs 0:ae83cacd60d2 838
icraggs 0:ae83cacd60d2 839
icraggs 0:ae83cacd60d2 840
icraggs 0:ae83cacd60d2 841 template<class Network, class Timer, int MAX_PACKET_SIZE, int b>
icraggs 0:ae83cacd60d2 842 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, b>::publish(MQTTSN_topicid& topic, void* payload, size_t payloadlen, unsigned short& id, enum QoS qos, bool retained)
icraggs 0:ae83cacd60d2 843 {
icraggs 0:ae83cacd60d2 844 int rc = FAILURE;
icraggs 0:ae83cacd60d2 845 Timer timer = Timer(command_timeout_ms);
icraggs 0:ae83cacd60d2 846 int len = 0;
icraggs 0:ae83cacd60d2 847
ImranBilalButt 6:1957f23ac496 848 /*
icraggs 0:ae83cacd60d2 849 if (!isconnected)
icraggs 0:ae83cacd60d2 850 goto exit;
ImranBilalButt 6:1957f23ac496 851 */
icraggs 0:ae83cacd60d2 852
icraggs 0:ae83cacd60d2 853 #if MQTTSNCLIENT_QOS1 || MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 854 if (qos == QOS1 || qos == QOS2)
icraggs 0:ae83cacd60d2 855 id = packetid.getNext();
icraggs 0:ae83cacd60d2 856 #endif
icraggs 0:ae83cacd60d2 857
icraggs 0:ae83cacd60d2 858 len = MQTTSNSerialize_publish(sendbuf, MAX_PACKET_SIZE, 0, qos, retained, id,
icraggs 0:ae83cacd60d2 859 topic, (unsigned char*)payload, payloadlen);
icraggs 0:ae83cacd60d2 860 if (len <= 0)
icraggs 0:ae83cacd60d2 861 goto exit;
icraggs 0:ae83cacd60d2 862
icraggs 0:ae83cacd60d2 863 #if MQTTSNCLIENT_QOS1 || MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 864 if (!cleansession)
icraggs 0:ae83cacd60d2 865 {
icraggs 0:ae83cacd60d2 866 memcpy(pubbuf, sendbuf, len);
icraggs 0:ae83cacd60d2 867 inflightMsgid = id;
icraggs 0:ae83cacd60d2 868 inflightLen = len;
icraggs 0:ae83cacd60d2 869 inflightQoS = qos;
icraggs 0:ae83cacd60d2 870 #if MQTTSNCLIENT_QOS2
icraggs 0:ae83cacd60d2 871 pubrel = false;
icraggs 0:ae83cacd60d2 872 #endif
icraggs 0:ae83cacd60d2 873 }
icraggs 0:ae83cacd60d2 874 #endif
icraggs 0:ae83cacd60d2 875
icraggs 0:ae83cacd60d2 876 rc = publish(len, timer, qos);
icraggs 0:ae83cacd60d2 877 exit:
icraggs 0:ae83cacd60d2 878 return rc;
icraggs 0:ae83cacd60d2 879 }
icraggs 0:ae83cacd60d2 880
icraggs 0:ae83cacd60d2 881
icraggs 0:ae83cacd60d2 882 template<class Network, class Timer, int MAX_PACKET_SIZE, int b>
icraggs 0:ae83cacd60d2 883 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, b>::publish(MQTTSN_topicid& topicName, void* payload, size_t payloadlen, enum QoS qos, bool retained)
icraggs 0:ae83cacd60d2 884 {
icraggs 0:ae83cacd60d2 885 unsigned short id = 0; // dummy - not used for anything
icraggs 0:ae83cacd60d2 886 return publish(topicName, payload, payloadlen, id, qos, retained);
icraggs 0:ae83cacd60d2 887 }
icraggs 0:ae83cacd60d2 888
icraggs 0:ae83cacd60d2 889
icraggs 0:ae83cacd60d2 890 template<class Network, class Timer, int MAX_PACKET_SIZE, int b>
icraggs 0:ae83cacd60d2 891 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, b>::publish(MQTTSN_topicid& topicName, Message& message)
icraggs 0:ae83cacd60d2 892 {
icraggs 0:ae83cacd60d2 893 return publish(topicName, message.payload, message.payloadlen, message.qos, message.retained);
icraggs 0:ae83cacd60d2 894 }
icraggs 0:ae83cacd60d2 895
icraggs 0:ae83cacd60d2 896
icraggs 0:ae83cacd60d2 897 template<class Network, class Timer, int MAX_PACKET_SIZE, int b>
icraggs 0:ae83cacd60d2 898 int MQTTSN::Client<Network, Timer, MAX_PACKET_SIZE, b>::disconnect(unsigned short duration)
icraggs 0:ae83cacd60d2 899 {
icraggs 0:ae83cacd60d2 900 int rc = FAILURE;
icraggs 0:ae83cacd60d2 901 Timer timer = Timer(command_timeout_ms); // we might wait for incomplete incoming publishes to complete
icraggs 0:ae83cacd60d2 902 int int_duration = (duration == 0) ? -1 : (int)duration;
icraggs 0:ae83cacd60d2 903 int len = MQTTSNSerialize_disconnect(sendbuf, MAX_PACKET_SIZE, int_duration);
icraggs 0:ae83cacd60d2 904 if (len > 0)
icraggs 0:ae83cacd60d2 905 rc = sendPacket(len, timer); // send the disconnect packet
icraggs 0:ae83cacd60d2 906
icraggs 0:ae83cacd60d2 907 isconnected = false;
icraggs 0:ae83cacd60d2 908 return rc;
icraggs 0:ae83cacd60d2 909 }
icraggs 0:ae83cacd60d2 910
icraggs 0:ae83cacd60d2 911
icraggs 0:ae83cacd60d2 912 #endif