Rym Badri / MQTT

cc

Dependencies:   MQTTPacket FP

MQTTClient.h@31:a51dd239b78e, 2014-05-22 (annotated)

Committer:
icraggs
Date:
Thu May 22 23:58:08 2014 +0000
Revision:
31:a51dd239b78e
Parent:
30:a4e3a97dabe3
Child:
33:8bbc3a992326
Child:
34:e18a166198df
Create MQTTSocket.h to not use EthernetInterface

Who changed what in which revision?

UserRevisionLine numberNew contents of line
icraggs 6:4d312a49200b 1 /*******************************************************************************
icraggs 6:4d312a49200b 2 * Copyright (c) 2014 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 6:4d312a49200b 15 *******************************************************************************/
icraggs 21:e918525e529d 16
icraggs 21:e918525e529d 17 /*
icraggs 21:e918525e529d 18
icraggs 21:e918525e529d 19 TODO:
icraggs 21:e918525e529d 20
icraggs 26:2658bb87c53d 21 ensure publish packets are retried on reconnect
icraggs 23:05fc7de97d4a 22
sam_grove 25:d13a6c558164 23 updating usage of FP. Try to remove inclusion of FP.cpp in main. sg-
sam_grove 25:d13a6c558164 24
icraggs 21:e918525e529d 25 */
sam_grove 0:fe461e4d7afe 26
icraggs 2:dcfdd2abfe71 27 #if !defined(MQTTCLIENT_H)
icraggs 2:dcfdd2abfe71 28 #define MQTTCLIENT_H
icraggs 2:dcfdd2abfe71 29
icraggs 29:833386b16f3e 30 #include "FP.cpp"
icraggs 3:dbff6b768d28 31 #include "MQTTPacket.h"
icraggs 6:4d312a49200b 32 #include "stdio.h"
icraggs 2:dcfdd2abfe71 33
icraggs 3:dbff6b768d28 34 namespace MQTT
icraggs 3:dbff6b768d28 35 {
icraggs 3:dbff6b768d28 36
icraggs 2:dcfdd2abfe71 37
icraggs 2:dcfdd2abfe71 38 enum QoS { QOS0, QOS1, QOS2 };
sam_grove 0:fe461e4d7afe 39
icraggs 31:a51dd239b78e 40 // all failure return codes must be negative
icraggs 23:05fc7de97d4a 41 enum returnCode { BUFFER_OVERFLOW = -2, FAILURE = -1, SUCCESS = 0 };
icraggs 23:05fc7de97d4a 42
icraggs 2:dcfdd2abfe71 43
icraggs 3:dbff6b768d28 44 struct Message
icraggs 2:dcfdd2abfe71 45 {
icraggs 2:dcfdd2abfe71 46 enum QoS qos;
icraggs 2:dcfdd2abfe71 47 bool retained;
icraggs 2:dcfdd2abfe71 48 bool dup;
Ian Craggs 12:cc7f2d62a393 49 unsigned short id;
icraggs 2:dcfdd2abfe71 50 void *payload;
icraggs 2:dcfdd2abfe71 51 size_t payloadlen;
sam_grove 0:fe461e4d7afe 52 };
sam_grove 0:fe461e4d7afe 53
icraggs 4:4ef00243708e 54
icraggs 20:cad3d54d7ecf 55 struct MessageData
icraggs 20:cad3d54d7ecf 56 {
icraggs 31:a51dd239b78e 57 MessageData(MQTTString &aTopicName, struct Message &aMessage) : message(aMessage), topicName(aTopicName)
icraggs 31:a51dd239b78e 58 {
icraggs 31:a51dd239b78e 59
icraggs 31:a51dd239b78e 60 }
icraggs 31:a51dd239b78e 61
icraggs 31:a51dd239b78e 62 struct Message &message;
icraggs 31:a51dd239b78e 63 MQTTString &topicName;
icraggs 20:cad3d54d7ecf 64 };
icraggs 20:cad3d54d7ecf 65
icraggs 20:cad3d54d7ecf 66
icraggs 9:01b8cc7d94cc 67 class PacketId
icraggs 9:01b8cc7d94cc 68 {
icraggs 9:01b8cc7d94cc 69 public:
icraggs 23:05fc7de97d4a 70 PacketId()
icraggs 23:05fc7de97d4a 71 {
icraggs 23:05fc7de97d4a 72 next = 0;
icraggs 23:05fc7de97d4a 73 }
icraggs 9:01b8cc7d94cc 74
icraggs 23:05fc7de97d4a 75 int getNext()
icraggs 23:05fc7de97d4a 76 {
icraggs 23:05fc7de97d4a 77 return next = (next == MAX_PACKET_ID) ? 1 : ++next;
icraggs 23:05fc7de97d4a 78 }
Ian Craggs 12:cc7f2d62a393 79
icraggs 9:01b8cc7d94cc 80 private:
icraggs 9:01b8cc7d94cc 81 static const int MAX_PACKET_ID = 65535;
icraggs 9:01b8cc7d94cc 82 int next;
icraggs 9:01b8cc7d94cc 83 };
icraggs 31:a51dd239b78e 84
icraggs 31:a51dd239b78e 85
icraggs 31:a51dd239b78e 86 class QoS2
icraggs 31:a51dd239b78e 87 {
icraggs 31:a51dd239b78e 88 public:
icraggs 31:a51dd239b78e 89
icraggs 31:a51dd239b78e 90
icraggs 31:a51dd239b78e 91 private:
icraggs 31:a51dd239b78e 92
icraggs 31:a51dd239b78e 93
icraggs 31:a51dd239b78e 94 };
icraggs 2:dcfdd2abfe71 95
icraggs 16:91c2f9a144d4 96
icraggs 21:e918525e529d 97 /**
icraggs 21:e918525e529d 98 * @class Client
icraggs 22:aadb79d29330 99 * @brief blocking, non-threaded MQTT client API
icraggs 23:05fc7de97d4a 100 *
icraggs 23:05fc7de97d4a 101 * This version of the API blocks on all method calls, until they are complete. This means that only one
icraggs 23:05fc7de97d4a 102 * MQTT request can be in process at any one time.
icraggs 21:e918525e529d 103 * @param Network a network class which supports send, receive
icraggs 21:e918525e529d 104 * @param Timer a timer class with the methods:
icraggs 21:e918525e529d 105 */
icraggs 31:a51dd239b78e 106 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE = 100, int MAX_MESSAGE_HANDLERS = 5>
icraggs 31:a51dd239b78e 107 class Client
icraggs 2:dcfdd2abfe71 108 {
icraggs 2:dcfdd2abfe71 109
icraggs 22:aadb79d29330 110 public:
icraggs 26:2658bb87c53d 111
icraggs 31:a51dd239b78e 112 typedef void (*messageHandler)(MessageData&);
icraggs 23:05fc7de97d4a 113
icraggs 23:05fc7de97d4a 114 /** Construct the client
icraggs 23:05fc7de97d4a 115 * @param network - pointer to an instance of the Network class - must be connected to the endpoint
icraggs 23:05fc7de97d4a 116 * before calling MQTT connect
icraggs 23:05fc7de97d4a 117 * @param limits an instance of the Limit class - to alter limits as required
icraggs 23:05fc7de97d4a 118 */
icraggs 23:05fc7de97d4a 119 Client(Network& network, unsigned int command_timeout_ms = 30000);
icraggs 20:cad3d54d7ecf 120
icraggs 20:cad3d54d7ecf 121 /** Set the default message handling callback - used for any message which does not match a subscription message handler
icraggs 20:cad3d54d7ecf 122 * @param mh - pointer to the callback function
icraggs 20:cad3d54d7ecf 123 */
icraggs 20:cad3d54d7ecf 124 void setDefaultMessageHandler(messageHandler mh)
icraggs 20:cad3d54d7ecf 125 {
icraggs 20:cad3d54d7ecf 126 defaultMessageHandler.attach(mh);
icraggs 20:cad3d54d7ecf 127 }
icraggs 2:dcfdd2abfe71 128
icraggs 20:cad3d54d7ecf 129 /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack
icraggs 20:cad3d54d7ecf 130 * The nework object must be connected to the network endpoint before calling this
icraggs 20:cad3d54d7ecf 131 * @param options - connect options
icraggs 20:cad3d54d7ecf 132 * @return success code -
icraggs 20:cad3d54d7ecf 133 */
icraggs 20:cad3d54d7ecf 134 int connect(MQTTPacket_connectData* options = 0);
icraggs 20:cad3d54d7ecf 135
icraggs 20:cad3d54d7ecf 136 /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs
icraggs 20:cad3d54d7ecf 137 * @param topic - the topic to publish to
icraggs 20:cad3d54d7ecf 138 * @param message - the message to send
icraggs 20:cad3d54d7ecf 139 * @return success code -
icraggs 20:cad3d54d7ecf 140 */
icraggs 20:cad3d54d7ecf 141 int publish(const char* topicName, Message* message);
icraggs 20:cad3d54d7ecf 142
icraggs 20:cad3d54d7ecf 143 /** MQTT Subscribe - send an MQTT subscribe packet and wait for the suback
icraggs 20:cad3d54d7ecf 144 * @param topicFilter - a topic pattern which can include wildcards
icraggs 20:cad3d54d7ecf 145 * @param qos - the MQTT QoS to subscribe at
icraggs 20:cad3d54d7ecf 146 * @param mh - the callback function to be invoked when a message is received for this subscription
icraggs 20:cad3d54d7ecf 147 * @return success code -
icraggs 20:cad3d54d7ecf 148 */
icraggs 20:cad3d54d7ecf 149 int subscribe(const char* topicFilter, enum QoS qos, messageHandler mh);
icraggs 9:01b8cc7d94cc 150
icraggs 20:cad3d54d7ecf 151 /** MQTT Unsubscribe - send an MQTT unsubscribe packet and wait for the unsuback
icraggs 20:cad3d54d7ecf 152 * @param topicFilter - a topic pattern which can include wildcards
icraggs 20:cad3d54d7ecf 153 * @return success code -
icraggs 20:cad3d54d7ecf 154 */
icraggs 20:cad3d54d7ecf 155 int unsubscribe(const char* topicFilter);
icraggs 20:cad3d54d7ecf 156
icraggs 31:a51dd239b78e 157 /** MQTT Disconnect - send an MQTT disconnect packet, and clean up any state
icraggs 20:cad3d54d7ecf 158 * @return success code -
icraggs 20:cad3d54d7ecf 159 */
icraggs 20:cad3d54d7ecf 160 int disconnect();
icraggs 8:c46930bd6c82 161
icraggs 20:cad3d54d7ecf 162 /** A call to this API must be made within the keepAlive interval to keep the MQTT connection alive
icraggs 20:cad3d54d7ecf 163 * yield can be called if no other MQTT operation is needed. This will also allow messages to be
icraggs 20:cad3d54d7ecf 164 * received.
icraggs 23:05fc7de97d4a 165 * @param timeout_ms the time to wait, in milliseconds
icraggs 26:2658bb87c53d 166 * @return success code - on failure, this means the client has disconnected
icraggs 20:cad3d54d7ecf 167 */
icraggs 26:2658bb87c53d 168 int yield(int timeout_ms = 1000);
icraggs 20:cad3d54d7ecf 169
icraggs 20:cad3d54d7ecf 170 private:
icraggs 20:cad3d54d7ecf 171
icraggs 20:cad3d54d7ecf 172 int cycle(Timer& timer);
icraggs 20:cad3d54d7ecf 173 int waitfor(int packet_type, Timer& timer);
icraggs 20:cad3d54d7ecf 174 int keepalive();
icraggs 2:dcfdd2abfe71 175
icraggs 3:dbff6b768d28 176 int decodePacket(int* value, int timeout);
icraggs 20:cad3d54d7ecf 177 int readPacket(Timer& timer);
icraggs 20:cad3d54d7ecf 178 int sendPacket(int length, Timer& timer);
icraggs 26:2658bb87c53d 179 int deliverMessage(MQTTString& topicName, Message& message);
icraggs 26:2658bb87c53d 180 bool isTopicMatched(char* topicFilter, MQTTString& topicName);
icraggs 3:dbff6b768d28 181
icraggs 23:05fc7de97d4a 182 Network& ipstack;
icraggs 23:05fc7de97d4a 183 unsigned int command_timeout_ms;
icraggs 16:91c2f9a144d4 184
icraggs 23:05fc7de97d4a 185 char buf[MAX_MQTT_PACKET_SIZE];
icraggs 23:05fc7de97d4a 186 char readbuf[MAX_MQTT_PACKET_SIZE];
icraggs 15:64a57183aa03 187
icraggs 20:cad3d54d7ecf 188 Timer ping_timer;
icraggs 15:64a57183aa03 189 unsigned int keepAliveInterval;
icraggs 20:cad3d54d7ecf 190 bool ping_outstanding;
icraggs 4:4ef00243708e 191
icraggs 9:01b8cc7d94cc 192 PacketId packetid;
icraggs 9:01b8cc7d94cc 193
icraggs 16:91c2f9a144d4 194 struct MessageHandlers
icraggs 15:64a57183aa03 195 {
icraggs 26:2658bb87c53d 196 const char* topicFilter;
icraggs 31:a51dd239b78e 197 FP<void, MessageData&> fp;
icraggs 23:05fc7de97d4a 198 } messageHandlers[MAX_MESSAGE_HANDLERS]; // Message handlers are indexed by subscription topic
icraggs 15:64a57183aa03 199
icraggs 31:a51dd239b78e 200 FP<void, MessageData&> defaultMessageHandler;
icraggs 28:8b2abe9bd814 201
icraggs 26:2658bb87c53d 202 bool isconnected;
icraggs 31:a51dd239b78e 203
icraggs 31:a51dd239b78e 204 #if 0
icraggs 31:a51dd239b78e 205 struct
icraggs 31:a51dd239b78e 206 {
icraggs 31:a51dd239b78e 207 bool used;
icraggs 31:a51dd239b78e 208 int id;
icraggs 31:a51dd239b78e 209 } QoS2messages[MAX_QOS2_MESSAGES];
icraggs 31:a51dd239b78e 210
icraggs 31:a51dd239b78e 211 #endif
icraggs 28:8b2abe9bd814 212
sam_grove 0:fe461e4d7afe 213 };
sam_grove 0:fe461e4d7afe 214
icraggs 15:64a57183aa03 215 }
icraggs 15:64a57183aa03 216
icraggs 15:64a57183aa03 217
icraggs 23:05fc7de97d4a 218 template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS>
icraggs 23:05fc7de97d4a 219 MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::Client(Network& network, unsigned int command_timeout_ms) : ipstack(network), packetid()
icraggs 15:64a57183aa03 220 {
icraggs 23:05fc7de97d4a 221 ping_timer = Timer();
icraggs 23:05fc7de97d4a 222 ping_outstanding = 0;
icraggs 23:05fc7de97d4a 223 for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 26:2658bb87c53d 224 messageHandlers[i].topicFilter = 0;
icraggs 26:2658bb87c53d 225 this->command_timeout_ms = command_timeout_ms;
icraggs 26:2658bb87c53d 226 isconnected = false;
icraggs 11:db15da110a37 227 }
icraggs 11:db15da110a37 228
icraggs 11:db15da110a37 229
icraggs 23:05fc7de97d4a 230 template<class Network, class Timer, int a, int b>
icraggs 23:05fc7de97d4a 231 int MQTT::Client<Network, Timer, a, b>::sendPacket(int length, Timer& timer)
icraggs 8:c46930bd6c82 232 {
icraggs 23:05fc7de97d4a 233 int rc = FAILURE,
icraggs 23:05fc7de97d4a 234 sent = 0;
icraggs 8:c46930bd6c82 235
icraggs 23:05fc7de97d4a 236 while (sent < length && !timer.expired())
icraggs 23:05fc7de97d4a 237 {
icraggs 23:05fc7de97d4a 238 rc = ipstack.write(&buf[sent], length, timer.left_ms());
icraggs 26:2658bb87c53d 239 if (rc < 0) // there was an error writing the data
icraggs 26:2658bb87c53d 240 break;
icraggs 26:2658bb87c53d 241 sent += rc;
icraggs 23:05fc7de97d4a 242 }
icraggs 20:cad3d54d7ecf 243 if (sent == length)
icraggs 23:05fc7de97d4a 244 {
icraggs 20:cad3d54d7ecf 245 ping_timer.countdown(this->keepAliveInterval); // record the fact that we have successfully sent the packet
icraggs 23:05fc7de97d4a 246 rc = SUCCESS;
icraggs 23:05fc7de97d4a 247 }
icraggs 23:05fc7de97d4a 248 else
icraggs 23:05fc7de97d4a 249 rc = FAILURE;
icraggs 23:05fc7de97d4a 250 return rc;
icraggs 8:c46930bd6c82 251 }
icraggs 8:c46930bd6c82 252
icraggs 8:c46930bd6c82 253
icraggs 26:2658bb87c53d 254 template<class Network, class Timer, int a, int b>
icraggs 26:2658bb87c53d 255 int MQTT::Client<Network, Timer, a, b>::decodePacket(int* value, int timeout)
icraggs 8:c46930bd6c82 256 {
icraggs 8:c46930bd6c82 257 char c;
icraggs 8:c46930bd6c82 258 int multiplier = 1;
icraggs 8:c46930bd6c82 259 int len = 0;
icraggs 20:cad3d54d7ecf 260 const int MAX_NO_OF_REMAINING_LENGTH_BYTES = 4;
icraggs 8:c46930bd6c82 261
icraggs 8:c46930bd6c82 262 *value = 0;
icraggs 8:c46930bd6c82 263 do
icraggs 8:c46930bd6c82 264 {
icraggs 8:c46930bd6c82 265 int rc = MQTTPACKET_READ_ERROR;
icraggs 8:c46930bd6c82 266
icraggs 8:c46930bd6c82 267 if (++len > MAX_NO_OF_REMAINING_LENGTH_BYTES)
icraggs 8:c46930bd6c82 268 {
icraggs 8:c46930bd6c82 269 rc = MQTTPACKET_READ_ERROR; /* bad data */
icraggs 8:c46930bd6c82 270 goto exit;
icraggs 8:c46930bd6c82 271 }
icraggs 23:05fc7de97d4a 272 rc = ipstack.read(&c, 1, timeout);
icraggs 8:c46930bd6c82 273 if (rc != 1)
icraggs 8:c46930bd6c82 274 goto exit;
icraggs 8:c46930bd6c82 275 *value += (c & 127) * multiplier;
icraggs 8:c46930bd6c82 276 multiplier *= 128;
icraggs 8:c46930bd6c82 277 } while ((c & 128) != 0);
icraggs 8:c46930bd6c82 278 exit:
icraggs 8:c46930bd6c82 279 return len;
icraggs 8:c46930bd6c82 280 }
icraggs 8:c46930bd6c82 281
icraggs 8:c46930bd6c82 282
icraggs 8:c46930bd6c82 283 /**
icraggs 8:c46930bd6c82 284 * If any read fails in this method, then we should disconnect from the network, as on reconnect
icraggs 8:c46930bd6c82 285 * the packets can be retried.
icraggs 8:c46930bd6c82 286 * @param timeout the max time to wait for the packet read to complete, in milliseconds
icraggs 8:c46930bd6c82 287 * @return the MQTT packet type, or -1 if none
icraggs 8:c46930bd6c82 288 */
icraggs 23:05fc7de97d4a 289 template<class Network, class Timer, int a, int b>
icraggs 23:05fc7de97d4a 290 int MQTT::Client<Network, Timer, a, b>::readPacket(Timer& timer)
icraggs 8:c46930bd6c82 291 {
icraggs 26:2658bb87c53d 292 int rc = FAILURE;
icraggs 8:c46930bd6c82 293 MQTTHeader header = {0};
icraggs 8:c46930bd6c82 294 int len = 0;
icraggs 8:c46930bd6c82 295 int rem_len = 0;
icraggs 8:c46930bd6c82 296
icraggs 8:c46930bd6c82 297 /* 1. read the header byte. This has the packet type in it */
icraggs 23:05fc7de97d4a 298 if (ipstack.read(readbuf, 1, timer.left_ms()) != 1)
icraggs 8:c46930bd6c82 299 goto exit;
icraggs 8:c46930bd6c82 300
icraggs 8:c46930bd6c82 301 len = 1;
icraggs 8:c46930bd6c82 302 /* 2. read the remaining length. This is variable in itself */
icraggs 20:cad3d54d7ecf 303 decodePacket(&rem_len, timer.left_ms());
icraggs 8:c46930bd6c82 304 len += MQTTPacket_encode(readbuf + 1, rem_len); /* put the original remaining length back into the buffer */
icraggs 8:c46930bd6c82 305
icraggs 8:c46930bd6c82 306 /* 3. read the rest of the buffer using a callback to supply the rest of the data */
icraggs 23:05fc7de97d4a 307 if (ipstack.read(readbuf + len, rem_len, timer.left_ms()) != rem_len)
icraggs 8:c46930bd6c82 308 goto exit;
icraggs 8:c46930bd6c82 309
icraggs 8:c46930bd6c82 310 header.byte = readbuf[0];
icraggs 8:c46930bd6c82 311 rc = header.bits.type;
icraggs 8:c46930bd6c82 312 exit:
icraggs 8:c46930bd6c82 313 return rc;
icraggs 3:dbff6b768d28 314 }
icraggs 3:dbff6b768d28 315
icraggs 8:c46930bd6c82 316
icraggs 26:2658bb87c53d 317 // assume topic filter and name is in correct format
icraggs 26:2658bb87c53d 318 // # can only be at end
icraggs 26:2658bb87c53d 319 // + and # can only be next to separator
icraggs 26:2658bb87c53d 320 template<class Network, class Timer, int a, int b>
icraggs 26:2658bb87c53d 321 bool MQTT::Client<Network, Timer, a, b>::isTopicMatched(char* topicFilter, MQTTString& topicName)
icraggs 26:2658bb87c53d 322 {
icraggs 26:2658bb87c53d 323 char* curf = topicFilter;
icraggs 26:2658bb87c53d 324 char* curn = topicName.lenstring.data;
icraggs 26:2658bb87c53d 325 char* curn_end = curn + topicName.lenstring.len;
icraggs 26:2658bb87c53d 326
icraggs 26:2658bb87c53d 327 while (*curf && curn < curn_end)
icraggs 26:2658bb87c53d 328 {
icraggs 26:2658bb87c53d 329 if (*curn == '/' && *curf != '/')
icraggs 26:2658bb87c53d 330 break;
icraggs 26:2658bb87c53d 331 if (*curf != '+' && *curf != '#' && *curf != *curn)
icraggs 26:2658bb87c53d 332 break;
icraggs 26:2658bb87c53d 333 if (*curf == '+')
icraggs 26:2658bb87c53d 334 { // skip until we meet the next separator, or end of string
icraggs 26:2658bb87c53d 335 char* nextpos = curn + 1;
icraggs 26:2658bb87c53d 336 while (nextpos < curn_end && *nextpos != '/')
icraggs 26:2658bb87c53d 337 nextpos = ++curn + 1;
icraggs 26:2658bb87c53d 338 }
icraggs 26:2658bb87c53d 339 else if (*curf == '#')
icraggs 26:2658bb87c53d 340 curn = curn_end - 1; // skip until end of string
icraggs 26:2658bb87c53d 341 curf++;
icraggs 26:2658bb87c53d 342 curn++;
icraggs 26:2658bb87c53d 343 };
icraggs 26:2658bb87c53d 344
icraggs 26:2658bb87c53d 345 return (curn == curn_end) && (*curf == '\0');
icraggs 26:2658bb87c53d 346 }
icraggs 26:2658bb87c53d 347
icraggs 26:2658bb87c53d 348
icraggs 26:2658bb87c53d 349
icraggs 23:05fc7de97d4a 350 template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS>
icraggs 26:2658bb87c53d 351 int MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::deliverMessage(MQTTString& topicName, Message& message)
icraggs 15:64a57183aa03 352 {
icraggs 26:2658bb87c53d 353 int rc = FAILURE;
icraggs 20:cad3d54d7ecf 354
icraggs 20:cad3d54d7ecf 355 // we have to find the right message handler - indexed by topic
icraggs 23:05fc7de97d4a 356 for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 20:cad3d54d7ecf 357 {
icraggs 26:2658bb87c53d 358 if (messageHandlers[i].topicFilter != 0 && (MQTTPacket_equals(&topicName, (char*)messageHandlers[i].topicFilter) ||
icraggs 26:2658bb87c53d 359 isTopicMatched((char*)messageHandlers[i].topicFilter, topicName)))
icraggs 20:cad3d54d7ecf 360 {
icraggs 26:2658bb87c53d 361 if (messageHandlers[i].fp.attached())
icraggs 26:2658bb87c53d 362 {
icraggs 31:a51dd239b78e 363 MessageData md(topicName, message);
icraggs 31:a51dd239b78e 364 messageHandlers[i].fp(md);
icraggs 26:2658bb87c53d 365 rc = SUCCESS;
icraggs 26:2658bb87c53d 366 }
icraggs 20:cad3d54d7ecf 367 }
icraggs 20:cad3d54d7ecf 368 }
icraggs 26:2658bb87c53d 369
icraggs 26:2658bb87c53d 370 if (rc == FAILURE && defaultMessageHandler.attached())
icraggs 26:2658bb87c53d 371 {
icraggs 31:a51dd239b78e 372 MessageData md(topicName, message);
icraggs 31:a51dd239b78e 373 defaultMessageHandler(md);
icraggs 26:2658bb87c53d 374 rc = SUCCESS;
icraggs 26:2658bb87c53d 375 }
icraggs 20:cad3d54d7ecf 376
icraggs 20:cad3d54d7ecf 377 return rc;
icraggs 15:64a57183aa03 378 }
icraggs 15:64a57183aa03 379
icraggs 15:64a57183aa03 380
icraggs 20:cad3d54d7ecf 381
icraggs 23:05fc7de97d4a 382 template<class Network, class Timer, int a, int b>
icraggs 26:2658bb87c53d 383 int MQTT::Client<Network, Timer, a, b>::yield(int timeout_ms)
icraggs 20:cad3d54d7ecf 384 {
icraggs 26:2658bb87c53d 385 int rc = SUCCESS;
icraggs 20:cad3d54d7ecf 386 Timer timer = Timer();
icraggs 20:cad3d54d7ecf 387
icraggs 23:05fc7de97d4a 388 timer.countdown_ms(timeout_ms);
icraggs 20:cad3d54d7ecf 389 while (!timer.expired())
icraggs 26:2658bb87c53d 390 {
icraggs 26:2658bb87c53d 391 if (cycle(timer) == FAILURE)
icraggs 26:2658bb87c53d 392 {
icraggs 26:2658bb87c53d 393 rc = FAILURE;
icraggs 26:2658bb87c53d 394 break;
icraggs 26:2658bb87c53d 395 }
icraggs 26:2658bb87c53d 396 }
icraggs 26:2658bb87c53d 397
icraggs 26:2658bb87c53d 398 return rc;
icraggs 20:cad3d54d7ecf 399 }
icraggs 20:cad3d54d7ecf 400
icraggs 20:cad3d54d7ecf 401
icraggs 23:05fc7de97d4a 402 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 23:05fc7de97d4a 403 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::cycle(Timer& timer)
icraggs 8:c46930bd6c82 404 {
icraggs 8:c46930bd6c82 405 /* get one piece of work off the wire and one pass through */
icraggs 20:cad3d54d7ecf 406
Ian Craggs 12:cc7f2d62a393 407 // read the socket, see what work is due
icraggs 20:cad3d54d7ecf 408 int packet_type = readPacket(timer);
icraggs 15:64a57183aa03 409
icraggs 26:2658bb87c53d 410 int len = 0,
icraggs 26:2658bb87c53d 411 rc = SUCCESS;
icraggs 28:8b2abe9bd814 412
icraggs 8:c46930bd6c82 413 switch (packet_type)
icraggs 8:c46930bd6c82 414 {
icraggs 15:64a57183aa03 415 case CONNACK:
icraggs 8:c46930bd6c82 416 case PUBACK:
icraggs 8:c46930bd6c82 417 case SUBACK:
icraggs 8:c46930bd6c82 418 break;
icraggs 15:64a57183aa03 419 case PUBLISH:
icraggs 20:cad3d54d7ecf 420 MQTTString topicName;
icraggs 20:cad3d54d7ecf 421 Message msg;
icraggs 26:2658bb87c53d 422 if (MQTTDeserialize_publish((int*)&msg.dup, (int*)&msg.qos, (int*)&msg.retained, (int*)&msg.id, &topicName,
icraggs 26:2658bb87c53d 423 (char**)&msg.payload, (int*)&msg.payloadlen, readbuf, MAX_MQTT_PACKET_SIZE) != 1)
icraggs 26:2658bb87c53d 424 goto exit;
icraggs 31:a51dd239b78e 425 // if (msg.qos != QOS2)
icraggs 31:a51dd239b78e 426 deliverMessage(topicName, msg);
icraggs 31:a51dd239b78e 427 #if 0
icraggs 31:a51dd239b78e 428 else if (isQoS2msgidFree(msg.id))
icraggs 31:a51dd239b78e 429 {
icraggs 31:a51dd239b78e 430 UseQoS2msgid(msg.id);
icraggs 31:a51dd239b78e 431 deliverMessage(topicName, msg);
icraggs 31:a51dd239b78e 432 }
icraggs 31:a51dd239b78e 433 #endif
icraggs 20:cad3d54d7ecf 434 if (msg.qos != QOS0)
icraggs 20:cad3d54d7ecf 435 {
icraggs 20:cad3d54d7ecf 436 if (msg.qos == QOS1)
icraggs 23:05fc7de97d4a 437 len = MQTTSerialize_ack(buf, MAX_MQTT_PACKET_SIZE, PUBACK, 0, msg.id);
icraggs 20:cad3d54d7ecf 438 else if (msg.qos == QOS2)
icraggs 23:05fc7de97d4a 439 len = MQTTSerialize_ack(buf, MAX_MQTT_PACKET_SIZE, PUBREC, 0, msg.id);
icraggs 26:2658bb87c53d 440 if (len <= 0)
icraggs 26:2658bb87c53d 441 rc = FAILURE;
icraggs 26:2658bb87c53d 442 else
icraggs 26:2658bb87c53d 443 rc = sendPacket(len, timer);
icraggs 26:2658bb87c53d 444 if (rc == FAILURE)
icraggs 20:cad3d54d7ecf 445 goto exit; // there was a problem
icraggs 20:cad3d54d7ecf 446 }
Ian Craggs 12:cc7f2d62a393 447 break;
icraggs 15:64a57183aa03 448 case PUBREC:
icraggs 20:cad3d54d7ecf 449 int type, dup, mypacketid;
icraggs 26:2658bb87c53d 450 if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1)
icraggs 26:2658bb87c53d 451 rc = FAILURE;
icraggs 26:2658bb87c53d 452 else if ((len = MQTTSerialize_ack(buf, MAX_MQTT_PACKET_SIZE, PUBREL, 0, mypacketid)) <= 0)
icraggs 26:2658bb87c53d 453 rc = FAILURE;
icraggs 26:2658bb87c53d 454 else if ((rc = sendPacket(len, timer)) != SUCCESS) // send the PUBREL packet
icraggs 26:2658bb87c53d 455 rc = FAILURE; // there was a problem
icraggs 26:2658bb87c53d 456 if (rc == FAILURE)
icraggs 20:cad3d54d7ecf 457 goto exit; // there was a problem
icraggs 8:c46930bd6c82 458 break;
icraggs 8:c46930bd6c82 459 case PUBCOMP:
icraggs 8:c46930bd6c82 460 break;
icraggs 15:64a57183aa03 461 case PINGRESP:
icraggs 20:cad3d54d7ecf 462 ping_outstanding = false;
icraggs 8:c46930bd6c82 463 break;
icraggs 15:64a57183aa03 464 }
icraggs 20:cad3d54d7ecf 465 keepalive();
Ian Craggs 12:cc7f2d62a393 466 exit:
icraggs 26:2658bb87c53d 467 if (rc == SUCCESS)
icraggs 26:2658bb87c53d 468 rc = packet_type;
icraggs 26:2658bb87c53d 469 return rc;
icraggs 15:64a57183aa03 470 }
icraggs 15:64a57183aa03 471
icraggs 15:64a57183aa03 472
icraggs 23:05fc7de97d4a 473 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 23:05fc7de97d4a 474 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::keepalive()
icraggs 15:64a57183aa03 475 {
icraggs 26:2658bb87c53d 476 int rc = FAILURE;
icraggs 15:64a57183aa03 477
icraggs 20:cad3d54d7ecf 478 if (keepAliveInterval == 0)
icraggs 26:2658bb87c53d 479 {
icraggs 26:2658bb87c53d 480 rc = SUCCESS;
icraggs 20:cad3d54d7ecf 481 goto exit;
icraggs 26:2658bb87c53d 482 }
icraggs 15:64a57183aa03 483
icraggs 20:cad3d54d7ecf 484 if (ping_timer.expired())
icraggs 20:cad3d54d7ecf 485 {
icraggs 26:2658bb87c53d 486 if (!ping_outstanding)
icraggs 20:cad3d54d7ecf 487 {
icraggs 20:cad3d54d7ecf 488 Timer timer = Timer(1000);
icraggs 23:05fc7de97d4a 489 int len = MQTTSerialize_pingreq(buf, MAX_MQTT_PACKET_SIZE);
icraggs 26:2658bb87c53d 490 if (len > 0 && (rc = sendPacket(len, timer)) == SUCCESS) // send the ping packet
icraggs 20:cad3d54d7ecf 491 ping_outstanding = true;
icraggs 20:cad3d54d7ecf 492 }
icraggs 20:cad3d54d7ecf 493 }
icraggs 15:64a57183aa03 494
icraggs 15:64a57183aa03 495 exit:
icraggs 20:cad3d54d7ecf 496 return rc;
icraggs 8:c46930bd6c82 497 }
icraggs 8:c46930bd6c82 498
icraggs 8:c46930bd6c82 499
icraggs 16:91c2f9a144d4 500 // only used in single-threaded mode where one command at a time is in process
icraggs 23:05fc7de97d4a 501 template<class Network, class Timer, int a, int b>
icraggs 23:05fc7de97d4a 502 int MQTT::Client<Network, Timer, a, b>::waitfor(int packet_type, Timer& timer)
icraggs 15:64a57183aa03 503 {
icraggs 26:2658bb87c53d 504 int rc = FAILURE;
icraggs 20:cad3d54d7ecf 505
icraggs 20:cad3d54d7ecf 506 do
icraggs 16:91c2f9a144d4 507 {
icraggs 20:cad3d54d7ecf 508 if (timer.expired())
icraggs 20:cad3d54d7ecf 509 break; // we timed out
icraggs 20:cad3d54d7ecf 510 }
icraggs 20:cad3d54d7ecf 511 while ((rc = cycle(timer)) != packet_type);
icraggs 20:cad3d54d7ecf 512
icraggs 20:cad3d54d7ecf 513 return rc;
icraggs 16:91c2f9a144d4 514 }
icraggs 16:91c2f9a144d4 515
icraggs 16:91c2f9a144d4 516
icraggs 23:05fc7de97d4a 517 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 23:05fc7de97d4a 518 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::connect(MQTTPacket_connectData* options)
icraggs 16:91c2f9a144d4 519 {
icraggs 23:05fc7de97d4a 520 Timer connect_timer = Timer(command_timeout_ms);
icraggs 26:2658bb87c53d 521 int rc = FAILURE;
icraggs 31:a51dd239b78e 522 MQTTPacket_connectData default_options = MQTTPacket_connectData_initializer;
icraggs 31:a51dd239b78e 523 int len = 0;
icraggs 31:a51dd239b78e 524
icraggs 31:a51dd239b78e 525 if (isconnected) // don't send connect packet again if we are already connected
icraggs 31:a51dd239b78e 526 goto exit;
icraggs 8:c46930bd6c82 527
icraggs 8:c46930bd6c82 528 if (options == 0)
Ian Craggs 12:cc7f2d62a393 529 options = &default_options; // set default options if none were supplied
icraggs 8:c46930bd6c82 530
icraggs 15:64a57183aa03 531 this->keepAliveInterval = options->keepAliveInterval;
icraggs 20:cad3d54d7ecf 532 ping_timer.countdown(this->keepAliveInterval);
icraggs 31:a51dd239b78e 533 if ((len = MQTTSerialize_connect(buf, MAX_MQTT_PACKET_SIZE, options)) <= 0)
icraggs 26:2658bb87c53d 534 goto exit;
icraggs 26:2658bb87c53d 535 if ((rc = sendPacket(len, connect_timer)) != SUCCESS) // send the connect packet
icraggs 20:cad3d54d7ecf 536 goto exit; // there was a problem
icraggs 8:c46930bd6c82 537
icraggs 20:cad3d54d7ecf 538 // this will be a blocking call, wait for the connack
icraggs 20:cad3d54d7ecf 539 if (waitfor(CONNACK, connect_timer) == CONNACK)
icraggs 15:64a57183aa03 540 {
icraggs 20:cad3d54d7ecf 541 int connack_rc = -1;
icraggs 23:05fc7de97d4a 542 if (MQTTDeserialize_connack(&connack_rc, readbuf, MAX_MQTT_PACKET_SIZE) == 1)
icraggs 20:cad3d54d7ecf 543 rc = connack_rc;
icraggs 26:2658bb87c53d 544 else
icraggs 26:2658bb87c53d 545 rc = FAILURE;
icraggs 8:c46930bd6c82 546 }
icraggs 26:2658bb87c53d 547 else
icraggs 26:2658bb87c53d 548 rc = FAILURE;
icraggs 15:64a57183aa03 549
icraggs 15:64a57183aa03 550 exit:
icraggs 26:2658bb87c53d 551 if (rc == SUCCESS)
icraggs 26:2658bb87c53d 552 isconnected = true;
icraggs 8:c46930bd6c82 553 return rc;
icraggs 8:c46930bd6c82 554 }
icraggs 8:c46930bd6c82 555
icraggs 8:c46930bd6c82 556
icraggs 23:05fc7de97d4a 557 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS>
icraggs 23:05fc7de97d4a 558 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::subscribe(const char* topicFilter, enum QoS qos, messageHandler messageHandler)
icraggs 20:cad3d54d7ecf 559 {
icraggs 31:a51dd239b78e 560 int rc = FAILURE;
icraggs 23:05fc7de97d4a 561 Timer timer = Timer(command_timeout_ms);
icraggs 26:2658bb87c53d 562 int len = 0;
icraggs 31:a51dd239b78e 563 MQTTString topic = {(char*)topicFilter, 0, 0};
icraggs 20:cad3d54d7ecf 564
icraggs 26:2658bb87c53d 565 if (!isconnected)
icraggs 20:cad3d54d7ecf 566 goto exit;
icraggs 26:2658bb87c53d 567
icraggs 26:2658bb87c53d 568 len = MQTTSerialize_subscribe(buf, MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic, (int*)&qos);
icraggs 26:2658bb87c53d 569 if (len <= 0)
icraggs 26:2658bb87c53d 570 goto exit;
icraggs 23:05fc7de97d4a 571 if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet
icraggs 26:2658bb87c53d 572 goto exit; // there was a problem
icraggs 8:c46930bd6c82 573
icraggs 20:cad3d54d7ecf 574 if (waitfor(SUBACK, timer) == SUBACK) // wait for suback
icraggs 8:c46930bd6c82 575 {
icraggs 20:cad3d54d7ecf 576 int count = 0, grantedQoS = -1, mypacketid;
icraggs 23:05fc7de97d4a 577 if (MQTTDeserialize_suback(&mypacketid, 1, &count, &grantedQoS, readbuf, MAX_MQTT_PACKET_SIZE) == 1)
icraggs 20:cad3d54d7ecf 578 rc = grantedQoS; // 0, 1, 2 or 0x80
icraggs 20:cad3d54d7ecf 579 if (rc != 0x80)
icraggs 8:c46930bd6c82 580 {
icraggs 23:05fc7de97d4a 581 for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i)
icraggs 16:91c2f9a144d4 582 {
icraggs 26:2658bb87c53d 583 if (messageHandlers[i].topicFilter == 0)
icraggs 20:cad3d54d7ecf 584 {
icraggs 26:2658bb87c53d 585 messageHandlers[i].topicFilter = topicFilter;
icraggs 20:cad3d54d7ecf 586 messageHandlers[i].fp.attach(messageHandler);
icraggs 20:cad3d54d7ecf 587 rc = 0;
icraggs 20:cad3d54d7ecf 588 break;
icraggs 20:cad3d54d7ecf 589 }
icraggs 16:91c2f9a144d4 590 }
icraggs 8:c46930bd6c82 591 }
icraggs 8:c46930bd6c82 592 }
icraggs 26:2658bb87c53d 593 else
icraggs 26:2658bb87c53d 594 rc = FAILURE;
icraggs 26:2658bb87c53d 595
icraggs 15:64a57183aa03 596 exit:
Ian Craggs 12:cc7f2d62a393 597 return rc;
icraggs 15:64a57183aa03 598 }
icraggs 15:64a57183aa03 599
icraggs 15:64a57183aa03 600
icraggs 23:05fc7de97d4a 601 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS>
icraggs 23:05fc7de97d4a 602 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::unsubscribe(const char* topicFilter)
icraggs 20:cad3d54d7ecf 603 {
icraggs 26:2658bb87c53d 604 int rc = FAILURE;
icraggs 31:a51dd239b78e 605 Timer timer = Timer(command_timeout_ms);
Ian Craggs 12:cc7f2d62a393 606 MQTTString topic = {(char*)topicFilter, 0, 0};
icraggs 31:a51dd239b78e 607 int len = 0;
icraggs 8:c46930bd6c82 608
icraggs 31:a51dd239b78e 609 if (!isconnected)
icraggs 31:a51dd239b78e 610 goto exit;
icraggs 31:a51dd239b78e 611
icraggs 31:a51dd239b78e 612 if ((len = MQTTSerialize_unsubscribe(buf, MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic)) <= 0)
icraggs 20:cad3d54d7ecf 613 goto exit;
icraggs 23:05fc7de97d4a 614 if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet
icraggs 20:cad3d54d7ecf 615 goto exit; // there was a problem
Ian Craggs 12:cc7f2d62a393 616
icraggs 20:cad3d54d7ecf 617 if (waitfor(UNSUBACK, timer) == UNSUBACK)
Ian Craggs 12:cc7f2d62a393 618 {
icraggs 20:cad3d54d7ecf 619 int mypacketid; // should be the same as the packetid above
icraggs 23:05fc7de97d4a 620 if (MQTTDeserialize_unsuback(&mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) == 1)
icraggs 20:cad3d54d7ecf 621 rc = 0;
Ian Craggs 12:cc7f2d62a393 622 }
icraggs 26:2658bb87c53d 623 else
icraggs 26:2658bb87c53d 624 rc = FAILURE;
icraggs 15:64a57183aa03 625
icraggs 15:64a57183aa03 626 exit:
Ian Craggs 12:cc7f2d62a393 627 return rc;
icraggs 15:64a57183aa03 628 }
icraggs 15:64a57183aa03 629
icraggs 15:64a57183aa03 630
icraggs 15:64a57183aa03 631
icraggs 23:05fc7de97d4a 632 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 23:05fc7de97d4a 633 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(const char* topicName, Message* message)
icraggs 20:cad3d54d7ecf 634 {
icraggs 26:2658bb87c53d 635 int rc = FAILURE;
icraggs 31:a51dd239b78e 636 Timer timer = Timer(command_timeout_ms);
icraggs 31:a51dd239b78e 637 MQTTString topicString = {(char*)topicName, 0, 0};
icraggs 31:a51dd239b78e 638 int len = 0;
icraggs 20:cad3d54d7ecf 639
icraggs 31:a51dd239b78e 640 if (!isconnected)
icraggs 31:a51dd239b78e 641 goto exit;
icraggs 15:64a57183aa03 642
icraggs 20:cad3d54d7ecf 643 if (message->qos == QOS1 || message->qos == QOS2)
icraggs 20:cad3d54d7ecf 644 message->id = packetid.getNext();
icraggs 15:64a57183aa03 645
icraggs 31:a51dd239b78e 646 len = MQTTSerialize_publish(buf, MAX_MQTT_PACKET_SIZE, 0, message->qos, message->retained, message->id,
icraggs 20:cad3d54d7ecf 647 topicString, (char*)message->payload, message->payloadlen);
icraggs 26:2658bb87c53d 648 if (len <= 0)
icraggs 26:2658bb87c53d 649 goto exit;
icraggs 26:2658bb87c53d 650 if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet
icraggs 20:cad3d54d7ecf 651 goto exit; // there was a problem
Ian Craggs 12:cc7f2d62a393 652
icraggs 20:cad3d54d7ecf 653 if (message->qos == QOS1)
Ian Craggs 12:cc7f2d62a393 654 {
icraggs 20:cad3d54d7ecf 655 if (waitfor(PUBACK, timer) == PUBACK)
icraggs 20:cad3d54d7ecf 656 {
icraggs 20:cad3d54d7ecf 657 int type, dup, mypacketid;
icraggs 26:2658bb87c53d 658 if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1)
icraggs 26:2658bb87c53d 659 rc = FAILURE;
icraggs 20:cad3d54d7ecf 660 }
icraggs 26:2658bb87c53d 661 else
icraggs 26:2658bb87c53d 662 rc = FAILURE;
Ian Craggs 12:cc7f2d62a393 663 }
icraggs 20:cad3d54d7ecf 664 else if (message->qos == QOS2)
Ian Craggs 12:cc7f2d62a393 665 {
icraggs 20:cad3d54d7ecf 666 if (waitfor(PUBCOMP, timer) == PUBCOMP)
icraggs 20:cad3d54d7ecf 667 {
icraggs 20:cad3d54d7ecf 668 int type, dup, mypacketid;
icraggs 26:2658bb87c53d 669 if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1)
icraggs 26:2658bb87c53d 670 rc = FAILURE;
icraggs 20:cad3d54d7ecf 671 }
icraggs 26:2658bb87c53d 672 else
icraggs 26:2658bb87c53d 673 rc = FAILURE;
Ian Craggs 12:cc7f2d62a393 674 }
icraggs 15:64a57183aa03 675
icraggs 15:64a57183aa03 676 exit:
icraggs 8:c46930bd6c82 677 return rc;
icraggs 8:c46930bd6c82 678 }
icraggs 8:c46930bd6c82 679
icraggs 8:c46930bd6c82 680
icraggs 23:05fc7de97d4a 681 template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b>
icraggs 23:05fc7de97d4a 682 int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::disconnect()
icraggs 20:cad3d54d7ecf 683 {
icraggs 26:2658bb87c53d 684 int rc = FAILURE;
icraggs 23:05fc7de97d4a 685 Timer timer = Timer(command_timeout_ms); // we might wait for incomplete incoming publishes to complete
icraggs 23:05fc7de97d4a 686 int len = MQTTSerialize_disconnect(buf, MAX_MQTT_PACKET_SIZE);
icraggs 26:2658bb87c53d 687 if (len > 0)
icraggs 26:2658bb87c53d 688 rc = sendPacket(len, timer); // send the disconnect packet
icraggs 31:a51dd239b78e 689
icraggs 31:a51dd239b78e 690 isconnected = false;
icraggs 23:05fc7de97d4a 691 return rc;
icraggs 20:cad3d54d7ecf 692 }
icraggs 20:cad3d54d7ecf 693
icraggs 20:cad3d54d7ecf 694
icraggs 20:cad3d54d7ecf 695 #endif