MQTT
MQTTClient.h@30:a4e3a97dabe3, 2014-05-20 (annotated)
- Committer:
- icraggs
- Date:
- Tue May 20 15:07:11 2014 +0000
- Revision:
- 30:a4e3a97dabe3
- Parent:
- 29:833386b16f3e
- Parent:
- 28:8b2abe9bd814
- Child:
- 31:a51dd239b78e
Merge after refactoring header locations
Who changed what in which revision?
User | Revision | Line number | New 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 | 23:05fc7de97d4a | 40 | enum returnCode { BUFFER_OVERFLOW = -2, FAILURE = -1, SUCCESS = 0 }; |
icraggs | 23:05fc7de97d4a | 41 | |
icraggs | 2:dcfdd2abfe71 | 42 | |
icraggs | 3:dbff6b768d28 | 43 | struct Message |
icraggs | 2:dcfdd2abfe71 | 44 | { |
icraggs | 2:dcfdd2abfe71 | 45 | enum QoS qos; |
icraggs | 2:dcfdd2abfe71 | 46 | bool retained; |
icraggs | 2:dcfdd2abfe71 | 47 | bool dup; |
Ian Craggs |
12:cc7f2d62a393 | 48 | unsigned short id; |
icraggs | 2:dcfdd2abfe71 | 49 | void *payload; |
icraggs | 2:dcfdd2abfe71 | 50 | size_t payloadlen; |
sam_grove | 0:fe461e4d7afe | 51 | }; |
sam_grove | 0:fe461e4d7afe | 52 | |
icraggs | 4:4ef00243708e | 53 | |
icraggs | 20:cad3d54d7ecf | 54 | struct MessageData |
icraggs | 20:cad3d54d7ecf | 55 | { |
icraggs | 20:cad3d54d7ecf | 56 | struct Message message; |
icraggs | 20:cad3d54d7ecf | 57 | char* topicName; |
icraggs | 20:cad3d54d7ecf | 58 | }; |
icraggs | 20:cad3d54d7ecf | 59 | |
icraggs | 20:cad3d54d7ecf | 60 | |
icraggs | 9:01b8cc7d94cc | 61 | class PacketId |
icraggs | 9:01b8cc7d94cc | 62 | { |
icraggs | 9:01b8cc7d94cc | 63 | public: |
icraggs | 23:05fc7de97d4a | 64 | PacketId() |
icraggs | 23:05fc7de97d4a | 65 | { |
icraggs | 23:05fc7de97d4a | 66 | next = 0; |
icraggs | 23:05fc7de97d4a | 67 | } |
icraggs | 9:01b8cc7d94cc | 68 | |
icraggs | 23:05fc7de97d4a | 69 | int getNext() |
icraggs | 23:05fc7de97d4a | 70 | { |
icraggs | 23:05fc7de97d4a | 71 | return next = (next == MAX_PACKET_ID) ? 1 : ++next; |
icraggs | 23:05fc7de97d4a | 72 | } |
Ian Craggs |
12:cc7f2d62a393 | 73 | |
icraggs | 9:01b8cc7d94cc | 74 | private: |
icraggs | 9:01b8cc7d94cc | 75 | static const int MAX_PACKET_ID = 65535; |
icraggs | 9:01b8cc7d94cc | 76 | int next; |
icraggs | 9:01b8cc7d94cc | 77 | }; |
icraggs | 2:dcfdd2abfe71 | 78 | |
icraggs | 16:91c2f9a144d4 | 79 | |
icraggs | 21:e918525e529d | 80 | /** |
icraggs | 21:e918525e529d | 81 | * @class Client |
icraggs | 22:aadb79d29330 | 82 | * @brief blocking, non-threaded MQTT client API |
icraggs | 23:05fc7de97d4a | 83 | * |
icraggs | 23:05fc7de97d4a | 84 | * This version of the API blocks on all method calls, until they are complete. This means that only one |
icraggs | 23:05fc7de97d4a | 85 | * MQTT request can be in process at any one time. |
icraggs | 21:e918525e529d | 86 | * @param Network a network class which supports send, receive |
icraggs | 21:e918525e529d | 87 | * @param Timer a timer class with the methods: |
icraggs | 21:e918525e529d | 88 | */ |
icraggs | 23:05fc7de97d4a | 89 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE = 100, int MAX_MESSAGE_HANDLERS = 5> class Client |
icraggs | 2:dcfdd2abfe71 | 90 | { |
icraggs | 2:dcfdd2abfe71 | 91 | |
icraggs | 22:aadb79d29330 | 92 | public: |
icraggs | 26:2658bb87c53d | 93 | |
icraggs | 23:05fc7de97d4a | 94 | typedef void (*messageHandler)(Message*); |
icraggs | 23:05fc7de97d4a | 95 | |
icraggs | 23:05fc7de97d4a | 96 | /** Construct the client |
icraggs | 23:05fc7de97d4a | 97 | * @param network - pointer to an instance of the Network class - must be connected to the endpoint |
icraggs | 23:05fc7de97d4a | 98 | * before calling MQTT connect |
icraggs | 23:05fc7de97d4a | 99 | * @param limits an instance of the Limit class - to alter limits as required |
icraggs | 23:05fc7de97d4a | 100 | */ |
icraggs | 23:05fc7de97d4a | 101 | Client(Network& network, unsigned int command_timeout_ms = 30000); |
icraggs | 20:cad3d54d7ecf | 102 | |
icraggs | 20:cad3d54d7ecf | 103 | /** Set the default message handling callback - used for any message which does not match a subscription message handler |
icraggs | 20:cad3d54d7ecf | 104 | * @param mh - pointer to the callback function |
icraggs | 20:cad3d54d7ecf | 105 | */ |
icraggs | 20:cad3d54d7ecf | 106 | void setDefaultMessageHandler(messageHandler mh) |
icraggs | 20:cad3d54d7ecf | 107 | { |
icraggs | 20:cad3d54d7ecf | 108 | defaultMessageHandler.attach(mh); |
icraggs | 20:cad3d54d7ecf | 109 | } |
icraggs | 2:dcfdd2abfe71 | 110 | |
icraggs | 20:cad3d54d7ecf | 111 | /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack |
icraggs | 20:cad3d54d7ecf | 112 | * The nework object must be connected to the network endpoint before calling this |
icraggs | 20:cad3d54d7ecf | 113 | * @param options - connect options |
icraggs | 20:cad3d54d7ecf | 114 | * @return success code - |
icraggs | 20:cad3d54d7ecf | 115 | */ |
icraggs | 20:cad3d54d7ecf | 116 | int connect(MQTTPacket_connectData* options = 0); |
icraggs | 20:cad3d54d7ecf | 117 | |
icraggs | 20:cad3d54d7ecf | 118 | /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs |
icraggs | 20:cad3d54d7ecf | 119 | * @param topic - the topic to publish to |
icraggs | 20:cad3d54d7ecf | 120 | * @param message - the message to send |
icraggs | 20:cad3d54d7ecf | 121 | * @return success code - |
icraggs | 20:cad3d54d7ecf | 122 | */ |
icraggs | 20:cad3d54d7ecf | 123 | int publish(const char* topicName, Message* message); |
icraggs | 20:cad3d54d7ecf | 124 | |
icraggs | 20:cad3d54d7ecf | 125 | /** MQTT Subscribe - send an MQTT subscribe packet and wait for the suback |
icraggs | 20:cad3d54d7ecf | 126 | * @param topicFilter - a topic pattern which can include wildcards |
icraggs | 20:cad3d54d7ecf | 127 | * @param qos - the MQTT QoS to subscribe at |
icraggs | 20:cad3d54d7ecf | 128 | * @param mh - the callback function to be invoked when a message is received for this subscription |
icraggs | 20:cad3d54d7ecf | 129 | * @return success code - |
icraggs | 20:cad3d54d7ecf | 130 | */ |
icraggs | 20:cad3d54d7ecf | 131 | int subscribe(const char* topicFilter, enum QoS qos, messageHandler mh); |
icraggs | 9:01b8cc7d94cc | 132 | |
icraggs | 20:cad3d54d7ecf | 133 | /** MQTT Unsubscribe - send an MQTT unsubscribe packet and wait for the unsuback |
icraggs | 20:cad3d54d7ecf | 134 | * @param topicFilter - a topic pattern which can include wildcards |
icraggs | 20:cad3d54d7ecf | 135 | * @return success code - |
icraggs | 20:cad3d54d7ecf | 136 | */ |
icraggs | 20:cad3d54d7ecf | 137 | int unsubscribe(const char* topicFilter); |
icraggs | 20:cad3d54d7ecf | 138 | |
icraggs | 20:cad3d54d7ecf | 139 | /** MQTT Disconnect - send an MQTT disconnect packet |
icraggs | 20:cad3d54d7ecf | 140 | * @return success code - |
icraggs | 20:cad3d54d7ecf | 141 | */ |
icraggs | 20:cad3d54d7ecf | 142 | int disconnect(); |
icraggs | 8:c46930bd6c82 | 143 | |
icraggs | 20:cad3d54d7ecf | 144 | /** A call to this API must be made within the keepAlive interval to keep the MQTT connection alive |
icraggs | 20:cad3d54d7ecf | 145 | * yield can be called if no other MQTT operation is needed. This will also allow messages to be |
icraggs | 20:cad3d54d7ecf | 146 | * received. |
icraggs | 23:05fc7de97d4a | 147 | * @param timeout_ms the time to wait, in milliseconds |
icraggs | 26:2658bb87c53d | 148 | * @return success code - on failure, this means the client has disconnected |
icraggs | 20:cad3d54d7ecf | 149 | */ |
icraggs | 26:2658bb87c53d | 150 | int yield(int timeout_ms = 1000); |
icraggs | 20:cad3d54d7ecf | 151 | |
icraggs | 20:cad3d54d7ecf | 152 | private: |
icraggs | 20:cad3d54d7ecf | 153 | |
icraggs | 20:cad3d54d7ecf | 154 | int cycle(Timer& timer); |
icraggs | 20:cad3d54d7ecf | 155 | int waitfor(int packet_type, Timer& timer); |
icraggs | 20:cad3d54d7ecf | 156 | int keepalive(); |
icraggs | 2:dcfdd2abfe71 | 157 | |
icraggs | 3:dbff6b768d28 | 158 | int decodePacket(int* value, int timeout); |
icraggs | 20:cad3d54d7ecf | 159 | int readPacket(Timer& timer); |
icraggs | 20:cad3d54d7ecf | 160 | int sendPacket(int length, Timer& timer); |
icraggs | 26:2658bb87c53d | 161 | int deliverMessage(MQTTString& topicName, Message& message); |
icraggs | 26:2658bb87c53d | 162 | bool isTopicMatched(char* topicFilter, MQTTString& topicName); |
icraggs | 3:dbff6b768d28 | 163 | |
icraggs | 23:05fc7de97d4a | 164 | Network& ipstack; |
icraggs | 23:05fc7de97d4a | 165 | unsigned int command_timeout_ms; |
icraggs | 16:91c2f9a144d4 | 166 | |
icraggs | 23:05fc7de97d4a | 167 | char buf[MAX_MQTT_PACKET_SIZE]; |
icraggs | 23:05fc7de97d4a | 168 | char readbuf[MAX_MQTT_PACKET_SIZE]; |
icraggs | 15:64a57183aa03 | 169 | |
icraggs | 20:cad3d54d7ecf | 170 | Timer ping_timer; |
icraggs | 15:64a57183aa03 | 171 | unsigned int keepAliveInterval; |
icraggs | 20:cad3d54d7ecf | 172 | bool ping_outstanding; |
icraggs | 4:4ef00243708e | 173 | |
icraggs | 9:01b8cc7d94cc | 174 | PacketId packetid; |
icraggs | 9:01b8cc7d94cc | 175 | |
icraggs | 28:8b2abe9bd814 | 176 | // typedef FP<void, Message*> messageHandlerFP; |
icraggs | 16:91c2f9a144d4 | 177 | struct MessageHandlers |
icraggs | 15:64a57183aa03 | 178 | { |
icraggs | 26:2658bb87c53d | 179 | const char* topicFilter; |
icraggs | 28:8b2abe9bd814 | 180 | //messageHandlerFP fp; typedefs not liked? |
sam_grove | 25:d13a6c558164 | 181 | FP<void, Message*> fp; |
icraggs | 23:05fc7de97d4a | 182 | } messageHandlers[MAX_MESSAGE_HANDLERS]; // Message handlers are indexed by subscription topic |
icraggs | 15:64a57183aa03 | 183 | |
sam_grove | 25:d13a6c558164 | 184 | FP<void, Message*> defaultMessageHandler; |
icraggs | 28:8b2abe9bd814 | 185 | |
icraggs | 26:2658bb87c53d | 186 | bool isconnected; |
icraggs | 28:8b2abe9bd814 | 187 | |
sam_grove | 0:fe461e4d7afe | 188 | }; |
sam_grove | 0:fe461e4d7afe | 189 | |
icraggs | 15:64a57183aa03 | 190 | } |
icraggs | 15:64a57183aa03 | 191 | |
icraggs | 15:64a57183aa03 | 192 | |
icraggs | 23:05fc7de97d4a | 193 | template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS> |
icraggs | 23:05fc7de97d4a | 194 | MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::Client(Network& network, unsigned int command_timeout_ms) : ipstack(network), packetid() |
icraggs | 15:64a57183aa03 | 195 | { |
icraggs | 23:05fc7de97d4a | 196 | ping_timer = Timer(); |
icraggs | 23:05fc7de97d4a | 197 | ping_outstanding = 0; |
icraggs | 23:05fc7de97d4a | 198 | for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i) |
icraggs | 26:2658bb87c53d | 199 | messageHandlers[i].topicFilter = 0; |
icraggs | 26:2658bb87c53d | 200 | this->command_timeout_ms = command_timeout_ms; |
icraggs | 26:2658bb87c53d | 201 | isconnected = false; |
icraggs | 11:db15da110a37 | 202 | } |
icraggs | 11:db15da110a37 | 203 | |
icraggs | 11:db15da110a37 | 204 | |
icraggs | 23:05fc7de97d4a | 205 | template<class Network, class Timer, int a, int b> |
icraggs | 23:05fc7de97d4a | 206 | int MQTT::Client<Network, Timer, a, b>::sendPacket(int length, Timer& timer) |
icraggs | 8:c46930bd6c82 | 207 | { |
icraggs | 23:05fc7de97d4a | 208 | int rc = FAILURE, |
icraggs | 23:05fc7de97d4a | 209 | sent = 0; |
icraggs | 8:c46930bd6c82 | 210 | |
icraggs | 23:05fc7de97d4a | 211 | while (sent < length && !timer.expired()) |
icraggs | 23:05fc7de97d4a | 212 | { |
icraggs | 23:05fc7de97d4a | 213 | rc = ipstack.write(&buf[sent], length, timer.left_ms()); |
icraggs | 26:2658bb87c53d | 214 | if (rc < 0) // there was an error writing the data |
icraggs | 26:2658bb87c53d | 215 | break; |
icraggs | 26:2658bb87c53d | 216 | sent += rc; |
icraggs | 23:05fc7de97d4a | 217 | } |
icraggs | 20:cad3d54d7ecf | 218 | if (sent == length) |
icraggs | 23:05fc7de97d4a | 219 | { |
icraggs | 20:cad3d54d7ecf | 220 | ping_timer.countdown(this->keepAliveInterval); // record the fact that we have successfully sent the packet |
icraggs | 23:05fc7de97d4a | 221 | rc = SUCCESS; |
icraggs | 23:05fc7de97d4a | 222 | } |
icraggs | 23:05fc7de97d4a | 223 | else |
icraggs | 23:05fc7de97d4a | 224 | rc = FAILURE; |
icraggs | 23:05fc7de97d4a | 225 | return rc; |
icraggs | 8:c46930bd6c82 | 226 | } |
icraggs | 8:c46930bd6c82 | 227 | |
icraggs | 8:c46930bd6c82 | 228 | |
icraggs | 26:2658bb87c53d | 229 | template<class Network, class Timer, int a, int b> |
icraggs | 26:2658bb87c53d | 230 | int MQTT::Client<Network, Timer, a, b>::decodePacket(int* value, int timeout) |
icraggs | 8:c46930bd6c82 | 231 | { |
icraggs | 8:c46930bd6c82 | 232 | char c; |
icraggs | 8:c46930bd6c82 | 233 | int multiplier = 1; |
icraggs | 8:c46930bd6c82 | 234 | int len = 0; |
icraggs | 20:cad3d54d7ecf | 235 | const int MAX_NO_OF_REMAINING_LENGTH_BYTES = 4; |
icraggs | 8:c46930bd6c82 | 236 | |
icraggs | 8:c46930bd6c82 | 237 | *value = 0; |
icraggs | 8:c46930bd6c82 | 238 | do |
icraggs | 8:c46930bd6c82 | 239 | { |
icraggs | 8:c46930bd6c82 | 240 | int rc = MQTTPACKET_READ_ERROR; |
icraggs | 8:c46930bd6c82 | 241 | |
icraggs | 8:c46930bd6c82 | 242 | if (++len > MAX_NO_OF_REMAINING_LENGTH_BYTES) |
icraggs | 8:c46930bd6c82 | 243 | { |
icraggs | 8:c46930bd6c82 | 244 | rc = MQTTPACKET_READ_ERROR; /* bad data */ |
icraggs | 8:c46930bd6c82 | 245 | goto exit; |
icraggs | 8:c46930bd6c82 | 246 | } |
icraggs | 23:05fc7de97d4a | 247 | rc = ipstack.read(&c, 1, timeout); |
icraggs | 8:c46930bd6c82 | 248 | if (rc != 1) |
icraggs | 8:c46930bd6c82 | 249 | goto exit; |
icraggs | 8:c46930bd6c82 | 250 | *value += (c & 127) * multiplier; |
icraggs | 8:c46930bd6c82 | 251 | multiplier *= 128; |
icraggs | 8:c46930bd6c82 | 252 | } while ((c & 128) != 0); |
icraggs | 8:c46930bd6c82 | 253 | exit: |
icraggs | 8:c46930bd6c82 | 254 | return len; |
icraggs | 8:c46930bd6c82 | 255 | } |
icraggs | 8:c46930bd6c82 | 256 | |
icraggs | 8:c46930bd6c82 | 257 | |
icraggs | 8:c46930bd6c82 | 258 | /** |
icraggs | 8:c46930bd6c82 | 259 | * If any read fails in this method, then we should disconnect from the network, as on reconnect |
icraggs | 8:c46930bd6c82 | 260 | * the packets can be retried. |
icraggs | 8:c46930bd6c82 | 261 | * @param timeout the max time to wait for the packet read to complete, in milliseconds |
icraggs | 8:c46930bd6c82 | 262 | * @return the MQTT packet type, or -1 if none |
icraggs | 8:c46930bd6c82 | 263 | */ |
icraggs | 23:05fc7de97d4a | 264 | template<class Network, class Timer, int a, int b> |
icraggs | 23:05fc7de97d4a | 265 | int MQTT::Client<Network, Timer, a, b>::readPacket(Timer& timer) |
icraggs | 8:c46930bd6c82 | 266 | { |
icraggs | 26:2658bb87c53d | 267 | int rc = FAILURE; |
icraggs | 8:c46930bd6c82 | 268 | MQTTHeader header = {0}; |
icraggs | 8:c46930bd6c82 | 269 | int len = 0; |
icraggs | 8:c46930bd6c82 | 270 | int rem_len = 0; |
icraggs | 8:c46930bd6c82 | 271 | |
icraggs | 8:c46930bd6c82 | 272 | /* 1. read the header byte. This has the packet type in it */ |
icraggs | 23:05fc7de97d4a | 273 | if (ipstack.read(readbuf, 1, timer.left_ms()) != 1) |
icraggs | 8:c46930bd6c82 | 274 | goto exit; |
icraggs | 8:c46930bd6c82 | 275 | |
icraggs | 8:c46930bd6c82 | 276 | len = 1; |
icraggs | 8:c46930bd6c82 | 277 | /* 2. read the remaining length. This is variable in itself */ |
icraggs | 20:cad3d54d7ecf | 278 | decodePacket(&rem_len, timer.left_ms()); |
icraggs | 8:c46930bd6c82 | 279 | len += MQTTPacket_encode(readbuf + 1, rem_len); /* put the original remaining length back into the buffer */ |
icraggs | 8:c46930bd6c82 | 280 | |
icraggs | 8:c46930bd6c82 | 281 | /* 3. read the rest of the buffer using a callback to supply the rest of the data */ |
icraggs | 23:05fc7de97d4a | 282 | if (ipstack.read(readbuf + len, rem_len, timer.left_ms()) != rem_len) |
icraggs | 8:c46930bd6c82 | 283 | goto exit; |
icraggs | 8:c46930bd6c82 | 284 | |
icraggs | 8:c46930bd6c82 | 285 | header.byte = readbuf[0]; |
icraggs | 8:c46930bd6c82 | 286 | rc = header.bits.type; |
icraggs | 8:c46930bd6c82 | 287 | exit: |
icraggs | 8:c46930bd6c82 | 288 | return rc; |
icraggs | 3:dbff6b768d28 | 289 | } |
icraggs | 3:dbff6b768d28 | 290 | |
icraggs | 8:c46930bd6c82 | 291 | |
icraggs | 26:2658bb87c53d | 292 | // assume topic filter and name is in correct format |
icraggs | 26:2658bb87c53d | 293 | // # can only be at end |
icraggs | 26:2658bb87c53d | 294 | // + and # can only be next to separator |
icraggs | 26:2658bb87c53d | 295 | template<class Network, class Timer, int a, int b> |
icraggs | 26:2658bb87c53d | 296 | bool MQTT::Client<Network, Timer, a, b>::isTopicMatched(char* topicFilter, MQTTString& topicName) |
icraggs | 26:2658bb87c53d | 297 | { |
icraggs | 26:2658bb87c53d | 298 | char* curf = topicFilter; |
icraggs | 26:2658bb87c53d | 299 | char* curn = topicName.lenstring.data; |
icraggs | 26:2658bb87c53d | 300 | char* curn_end = curn + topicName.lenstring.len; |
icraggs | 26:2658bb87c53d | 301 | |
icraggs | 26:2658bb87c53d | 302 | while (*curf && curn < curn_end) |
icraggs | 26:2658bb87c53d | 303 | { |
icraggs | 26:2658bb87c53d | 304 | if (*curn == '/' && *curf != '/') |
icraggs | 26:2658bb87c53d | 305 | break; |
icraggs | 26:2658bb87c53d | 306 | if (*curf != '+' && *curf != '#' && *curf != *curn) |
icraggs | 26:2658bb87c53d | 307 | break; |
icraggs | 26:2658bb87c53d | 308 | if (*curf == '+') |
icraggs | 26:2658bb87c53d | 309 | { // skip until we meet the next separator, or end of string |
icraggs | 26:2658bb87c53d | 310 | char* nextpos = curn + 1; |
icraggs | 26:2658bb87c53d | 311 | while (nextpos < curn_end && *nextpos != '/') |
icraggs | 26:2658bb87c53d | 312 | nextpos = ++curn + 1; |
icraggs | 26:2658bb87c53d | 313 | } |
icraggs | 26:2658bb87c53d | 314 | else if (*curf == '#') |
icraggs | 26:2658bb87c53d | 315 | curn = curn_end - 1; // skip until end of string |
icraggs | 26:2658bb87c53d | 316 | curf++; |
icraggs | 26:2658bb87c53d | 317 | curn++; |
icraggs | 26:2658bb87c53d | 318 | }; |
icraggs | 26:2658bb87c53d | 319 | |
icraggs | 26:2658bb87c53d | 320 | return (curn == curn_end) && (*curf == '\0'); |
icraggs | 26:2658bb87c53d | 321 | } |
icraggs | 26:2658bb87c53d | 322 | |
icraggs | 26:2658bb87c53d | 323 | |
icraggs | 26:2658bb87c53d | 324 | |
icraggs | 23:05fc7de97d4a | 325 | template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS> |
icraggs | 26:2658bb87c53d | 326 | int MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::deliverMessage(MQTTString& topicName, Message& message) |
icraggs | 15:64a57183aa03 | 327 | { |
icraggs | 26:2658bb87c53d | 328 | int rc = FAILURE; |
icraggs | 20:cad3d54d7ecf | 329 | |
icraggs | 20:cad3d54d7ecf | 330 | // we have to find the right message handler - indexed by topic |
icraggs | 23:05fc7de97d4a | 331 | for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i) |
icraggs | 20:cad3d54d7ecf | 332 | { |
icraggs | 26:2658bb87c53d | 333 | if (messageHandlers[i].topicFilter != 0 && (MQTTPacket_equals(&topicName, (char*)messageHandlers[i].topicFilter) || |
icraggs | 26:2658bb87c53d | 334 | isTopicMatched((char*)messageHandlers[i].topicFilter, topicName))) |
icraggs | 20:cad3d54d7ecf | 335 | { |
icraggs | 26:2658bb87c53d | 336 | if (messageHandlers[i].fp.attached()) |
icraggs | 26:2658bb87c53d | 337 | { |
icraggs | 26:2658bb87c53d | 338 | messageHandlers[i].fp(&message); |
icraggs | 26:2658bb87c53d | 339 | rc = SUCCESS; |
icraggs | 26:2658bb87c53d | 340 | } |
icraggs | 20:cad3d54d7ecf | 341 | } |
icraggs | 20:cad3d54d7ecf | 342 | } |
icraggs | 26:2658bb87c53d | 343 | |
icraggs | 26:2658bb87c53d | 344 | if (rc == FAILURE && defaultMessageHandler.attached()) |
icraggs | 26:2658bb87c53d | 345 | { |
icraggs | 26:2658bb87c53d | 346 | defaultMessageHandler(&message); |
icraggs | 26:2658bb87c53d | 347 | rc = SUCCESS; |
icraggs | 26:2658bb87c53d | 348 | } |
icraggs | 20:cad3d54d7ecf | 349 | |
icraggs | 20:cad3d54d7ecf | 350 | return rc; |
icraggs | 15:64a57183aa03 | 351 | } |
icraggs | 15:64a57183aa03 | 352 | |
icraggs | 15:64a57183aa03 | 353 | |
icraggs | 20:cad3d54d7ecf | 354 | |
icraggs | 23:05fc7de97d4a | 355 | template<class Network, class Timer, int a, int b> |
icraggs | 26:2658bb87c53d | 356 | int MQTT::Client<Network, Timer, a, b>::yield(int timeout_ms) |
icraggs | 20:cad3d54d7ecf | 357 | { |
icraggs | 26:2658bb87c53d | 358 | int rc = SUCCESS; |
icraggs | 20:cad3d54d7ecf | 359 | Timer timer = Timer(); |
icraggs | 20:cad3d54d7ecf | 360 | |
icraggs | 23:05fc7de97d4a | 361 | timer.countdown_ms(timeout_ms); |
icraggs | 20:cad3d54d7ecf | 362 | while (!timer.expired()) |
icraggs | 26:2658bb87c53d | 363 | { |
icraggs | 26:2658bb87c53d | 364 | if (cycle(timer) == FAILURE) |
icraggs | 26:2658bb87c53d | 365 | { |
icraggs | 26:2658bb87c53d | 366 | rc = FAILURE; |
icraggs | 26:2658bb87c53d | 367 | break; |
icraggs | 26:2658bb87c53d | 368 | } |
icraggs | 26:2658bb87c53d | 369 | } |
icraggs | 26:2658bb87c53d | 370 | |
icraggs | 26:2658bb87c53d | 371 | return rc; |
icraggs | 20:cad3d54d7ecf | 372 | } |
icraggs | 20:cad3d54d7ecf | 373 | |
icraggs | 20:cad3d54d7ecf | 374 | |
icraggs | 23:05fc7de97d4a | 375 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
icraggs | 23:05fc7de97d4a | 376 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::cycle(Timer& timer) |
icraggs | 8:c46930bd6c82 | 377 | { |
icraggs | 8:c46930bd6c82 | 378 | /* get one piece of work off the wire and one pass through */ |
icraggs | 20:cad3d54d7ecf | 379 | |
Ian Craggs |
12:cc7f2d62a393 | 380 | // read the socket, see what work is due |
icraggs | 20:cad3d54d7ecf | 381 | int packet_type = readPacket(timer); |
icraggs | 15:64a57183aa03 | 382 | |
icraggs | 26:2658bb87c53d | 383 | int len = 0, |
icraggs | 26:2658bb87c53d | 384 | rc = SUCCESS; |
icraggs | 28:8b2abe9bd814 | 385 | |
icraggs | 8:c46930bd6c82 | 386 | switch (packet_type) |
icraggs | 8:c46930bd6c82 | 387 | { |
icraggs | 15:64a57183aa03 | 388 | case CONNACK: |
icraggs | 8:c46930bd6c82 | 389 | case PUBACK: |
icraggs | 8:c46930bd6c82 | 390 | case SUBACK: |
icraggs | 8:c46930bd6c82 | 391 | break; |
icraggs | 15:64a57183aa03 | 392 | case PUBLISH: |
icraggs | 20:cad3d54d7ecf | 393 | MQTTString topicName; |
icraggs | 20:cad3d54d7ecf | 394 | Message msg; |
icraggs | 26:2658bb87c53d | 395 | if (MQTTDeserialize_publish((int*)&msg.dup, (int*)&msg.qos, (int*)&msg.retained, (int*)&msg.id, &topicName, |
icraggs | 26:2658bb87c53d | 396 | (char**)&msg.payload, (int*)&msg.payloadlen, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
icraggs | 26:2658bb87c53d | 397 | goto exit; |
icraggs | 26:2658bb87c53d | 398 | deliverMessage(topicName, msg); |
icraggs | 20:cad3d54d7ecf | 399 | if (msg.qos != QOS0) |
icraggs | 20:cad3d54d7ecf | 400 | { |
icraggs | 20:cad3d54d7ecf | 401 | if (msg.qos == QOS1) |
icraggs | 23:05fc7de97d4a | 402 | len = MQTTSerialize_ack(buf, MAX_MQTT_PACKET_SIZE, PUBACK, 0, msg.id); |
icraggs | 20:cad3d54d7ecf | 403 | else if (msg.qos == QOS2) |
icraggs | 23:05fc7de97d4a | 404 | len = MQTTSerialize_ack(buf, MAX_MQTT_PACKET_SIZE, PUBREC, 0, msg.id); |
icraggs | 26:2658bb87c53d | 405 | if (len <= 0) |
icraggs | 26:2658bb87c53d | 406 | rc = FAILURE; |
icraggs | 26:2658bb87c53d | 407 | else |
icraggs | 26:2658bb87c53d | 408 | rc = sendPacket(len, timer); |
icraggs | 26:2658bb87c53d | 409 | if (rc == FAILURE) |
icraggs | 20:cad3d54d7ecf | 410 | goto exit; // there was a problem |
icraggs | 20:cad3d54d7ecf | 411 | } |
Ian Craggs |
12:cc7f2d62a393 | 412 | break; |
icraggs | 15:64a57183aa03 | 413 | case PUBREC: |
icraggs | 20:cad3d54d7ecf | 414 | int type, dup, mypacketid; |
icraggs | 26:2658bb87c53d | 415 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
icraggs | 26:2658bb87c53d | 416 | rc = FAILURE; |
icraggs | 26:2658bb87c53d | 417 | else if ((len = MQTTSerialize_ack(buf, MAX_MQTT_PACKET_SIZE, PUBREL, 0, mypacketid)) <= 0) |
icraggs | 26:2658bb87c53d | 418 | rc = FAILURE; |
icraggs | 26:2658bb87c53d | 419 | else if ((rc = sendPacket(len, timer)) != SUCCESS) // send the PUBREL packet |
icraggs | 26:2658bb87c53d | 420 | rc = FAILURE; // there was a problem |
icraggs | 26:2658bb87c53d | 421 | if (rc == FAILURE) |
icraggs | 20:cad3d54d7ecf | 422 | goto exit; // there was a problem |
icraggs | 8:c46930bd6c82 | 423 | break; |
icraggs | 8:c46930bd6c82 | 424 | case PUBCOMP: |
icraggs | 8:c46930bd6c82 | 425 | break; |
icraggs | 15:64a57183aa03 | 426 | case PINGRESP: |
icraggs | 20:cad3d54d7ecf | 427 | ping_outstanding = false; |
icraggs | 8:c46930bd6c82 | 428 | break; |
icraggs | 15:64a57183aa03 | 429 | } |
icraggs | 20:cad3d54d7ecf | 430 | keepalive(); |
Ian Craggs |
12:cc7f2d62a393 | 431 | exit: |
icraggs | 26:2658bb87c53d | 432 | if (rc == SUCCESS) |
icraggs | 26:2658bb87c53d | 433 | rc = packet_type; |
icraggs | 26:2658bb87c53d | 434 | return rc; |
icraggs | 15:64a57183aa03 | 435 | } |
icraggs | 15:64a57183aa03 | 436 | |
icraggs | 15:64a57183aa03 | 437 | |
icraggs | 23:05fc7de97d4a | 438 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
icraggs | 23:05fc7de97d4a | 439 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::keepalive() |
icraggs | 15:64a57183aa03 | 440 | { |
icraggs | 26:2658bb87c53d | 441 | int rc = FAILURE; |
icraggs | 15:64a57183aa03 | 442 | |
icraggs | 20:cad3d54d7ecf | 443 | if (keepAliveInterval == 0) |
icraggs | 26:2658bb87c53d | 444 | { |
icraggs | 26:2658bb87c53d | 445 | rc = SUCCESS; |
icraggs | 20:cad3d54d7ecf | 446 | goto exit; |
icraggs | 26:2658bb87c53d | 447 | } |
icraggs | 15:64a57183aa03 | 448 | |
icraggs | 20:cad3d54d7ecf | 449 | if (ping_timer.expired()) |
icraggs | 20:cad3d54d7ecf | 450 | { |
icraggs | 26:2658bb87c53d | 451 | if (!ping_outstanding) |
icraggs | 20:cad3d54d7ecf | 452 | { |
icraggs | 20:cad3d54d7ecf | 453 | Timer timer = Timer(1000); |
icraggs | 23:05fc7de97d4a | 454 | int len = MQTTSerialize_pingreq(buf, MAX_MQTT_PACKET_SIZE); |
icraggs | 26:2658bb87c53d | 455 | if (len > 0 && (rc = sendPacket(len, timer)) == SUCCESS) // send the ping packet |
icraggs | 20:cad3d54d7ecf | 456 | ping_outstanding = true; |
icraggs | 20:cad3d54d7ecf | 457 | } |
icraggs | 20:cad3d54d7ecf | 458 | } |
icraggs | 15:64a57183aa03 | 459 | |
icraggs | 15:64a57183aa03 | 460 | exit: |
icraggs | 20:cad3d54d7ecf | 461 | return rc; |
icraggs | 8:c46930bd6c82 | 462 | } |
icraggs | 8:c46930bd6c82 | 463 | |
icraggs | 8:c46930bd6c82 | 464 | |
icraggs | 16:91c2f9a144d4 | 465 | // only used in single-threaded mode where one command at a time is in process |
icraggs | 23:05fc7de97d4a | 466 | template<class Network, class Timer, int a, int b> |
icraggs | 23:05fc7de97d4a | 467 | int MQTT::Client<Network, Timer, a, b>::waitfor(int packet_type, Timer& timer) |
icraggs | 15:64a57183aa03 | 468 | { |
icraggs | 26:2658bb87c53d | 469 | int rc = FAILURE; |
icraggs | 20:cad3d54d7ecf | 470 | |
icraggs | 20:cad3d54d7ecf | 471 | do |
icraggs | 16:91c2f9a144d4 | 472 | { |
icraggs | 20:cad3d54d7ecf | 473 | if (timer.expired()) |
icraggs | 20:cad3d54d7ecf | 474 | break; // we timed out |
icraggs | 20:cad3d54d7ecf | 475 | } |
icraggs | 20:cad3d54d7ecf | 476 | while ((rc = cycle(timer)) != packet_type); |
icraggs | 20:cad3d54d7ecf | 477 | |
icraggs | 20:cad3d54d7ecf | 478 | return rc; |
icraggs | 16:91c2f9a144d4 | 479 | } |
icraggs | 16:91c2f9a144d4 | 480 | |
icraggs | 16:91c2f9a144d4 | 481 | |
icraggs | 23:05fc7de97d4a | 482 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
icraggs | 23:05fc7de97d4a | 483 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::connect(MQTTPacket_connectData* options) |
icraggs | 16:91c2f9a144d4 | 484 | { |
icraggs | 23:05fc7de97d4a | 485 | Timer connect_timer = Timer(command_timeout_ms); |
icraggs | 26:2658bb87c53d | 486 | int rc = FAILURE; |
icraggs | 8:c46930bd6c82 | 487 | |
Ian Craggs |
12:cc7f2d62a393 | 488 | MQTTPacket_connectData default_options = MQTTPacket_connectData_initializer; |
icraggs | 8:c46930bd6c82 | 489 | if (options == 0) |
Ian Craggs |
12:cc7f2d62a393 | 490 | options = &default_options; // set default options if none were supplied |
icraggs | 8:c46930bd6c82 | 491 | |
icraggs | 15:64a57183aa03 | 492 | this->keepAliveInterval = options->keepAliveInterval; |
icraggs | 20:cad3d54d7ecf | 493 | ping_timer.countdown(this->keepAliveInterval); |
icraggs | 23:05fc7de97d4a | 494 | int len = MQTTSerialize_connect(buf, MAX_MQTT_PACKET_SIZE, options); |
icraggs | 26:2658bb87c53d | 495 | if (len <= 0) |
icraggs | 26:2658bb87c53d | 496 | goto exit; |
icraggs | 26:2658bb87c53d | 497 | if ((rc = sendPacket(len, connect_timer)) != SUCCESS) // send the connect packet |
icraggs | 20:cad3d54d7ecf | 498 | goto exit; // there was a problem |
icraggs | 8:c46930bd6c82 | 499 | |
icraggs | 20:cad3d54d7ecf | 500 | // this will be a blocking call, wait for the connack |
icraggs | 20:cad3d54d7ecf | 501 | if (waitfor(CONNACK, connect_timer) == CONNACK) |
icraggs | 15:64a57183aa03 | 502 | { |
icraggs | 20:cad3d54d7ecf | 503 | int connack_rc = -1; |
icraggs | 23:05fc7de97d4a | 504 | if (MQTTDeserialize_connack(&connack_rc, readbuf, MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 505 | rc = connack_rc; |
icraggs | 26:2658bb87c53d | 506 | else |
icraggs | 26:2658bb87c53d | 507 | rc = FAILURE; |
icraggs | 8:c46930bd6c82 | 508 | } |
icraggs | 26:2658bb87c53d | 509 | else |
icraggs | 26:2658bb87c53d | 510 | rc = FAILURE; |
icraggs | 15:64a57183aa03 | 511 | |
icraggs | 15:64a57183aa03 | 512 | exit: |
icraggs | 26:2658bb87c53d | 513 | if (rc == SUCCESS) |
icraggs | 26:2658bb87c53d | 514 | isconnected = true; |
icraggs | 8:c46930bd6c82 | 515 | return rc; |
icraggs | 8:c46930bd6c82 | 516 | } |
icraggs | 8:c46930bd6c82 | 517 | |
icraggs | 8:c46930bd6c82 | 518 | |
icraggs | 23:05fc7de97d4a | 519 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS> |
icraggs | 23:05fc7de97d4a | 520 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::subscribe(const char* topicFilter, enum QoS qos, messageHandler messageHandler) |
icraggs | 20:cad3d54d7ecf | 521 | { |
icraggs | 26:2658bb87c53d | 522 | int rc = FAILURE; |
icraggs | 23:05fc7de97d4a | 523 | Timer timer = Timer(command_timeout_ms); |
icraggs | 26:2658bb87c53d | 524 | int len = 0; |
icraggs | 20:cad3d54d7ecf | 525 | |
icraggs | 8:c46930bd6c82 | 526 | MQTTString topic = {(char*)topicFilter, 0, 0}; |
icraggs | 26:2658bb87c53d | 527 | if (!isconnected) |
icraggs | 20:cad3d54d7ecf | 528 | goto exit; |
icraggs | 26:2658bb87c53d | 529 | |
icraggs | 26:2658bb87c53d | 530 | len = MQTTSerialize_subscribe(buf, MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic, (int*)&qos); |
icraggs | 26:2658bb87c53d | 531 | if (len <= 0) |
icraggs | 26:2658bb87c53d | 532 | goto exit; |
icraggs | 23:05fc7de97d4a | 533 | if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet |
icraggs | 26:2658bb87c53d | 534 | goto exit; // there was a problem |
icraggs | 8:c46930bd6c82 | 535 | |
icraggs | 20:cad3d54d7ecf | 536 | if (waitfor(SUBACK, timer) == SUBACK) // wait for suback |
icraggs | 8:c46930bd6c82 | 537 | { |
icraggs | 20:cad3d54d7ecf | 538 | int count = 0, grantedQoS = -1, mypacketid; |
icraggs | 23:05fc7de97d4a | 539 | if (MQTTDeserialize_suback(&mypacketid, 1, &count, &grantedQoS, readbuf, MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 540 | rc = grantedQoS; // 0, 1, 2 or 0x80 |
icraggs | 20:cad3d54d7ecf | 541 | if (rc != 0x80) |
icraggs | 8:c46930bd6c82 | 542 | { |
icraggs | 23:05fc7de97d4a | 543 | for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i) |
icraggs | 16:91c2f9a144d4 | 544 | { |
icraggs | 26:2658bb87c53d | 545 | if (messageHandlers[i].topicFilter == 0) |
icraggs | 20:cad3d54d7ecf | 546 | { |
icraggs | 26:2658bb87c53d | 547 | messageHandlers[i].topicFilter = topicFilter; |
icraggs | 20:cad3d54d7ecf | 548 | messageHandlers[i].fp.attach(messageHandler); |
icraggs | 20:cad3d54d7ecf | 549 | rc = 0; |
icraggs | 20:cad3d54d7ecf | 550 | break; |
icraggs | 20:cad3d54d7ecf | 551 | } |
icraggs | 16:91c2f9a144d4 | 552 | } |
icraggs | 8:c46930bd6c82 | 553 | } |
icraggs | 8:c46930bd6c82 | 554 | } |
icraggs | 26:2658bb87c53d | 555 | else |
icraggs | 26:2658bb87c53d | 556 | rc = FAILURE; |
icraggs | 26:2658bb87c53d | 557 | |
icraggs | 15:64a57183aa03 | 558 | exit: |
icraggs | 26:2658bb87c53d | 559 | //if (rc == FAILURE) |
icraggs | 26:2658bb87c53d | 560 | // closesession(); |
Ian Craggs |
12:cc7f2d62a393 | 561 | return rc; |
icraggs | 15:64a57183aa03 | 562 | } |
icraggs | 15:64a57183aa03 | 563 | |
icraggs | 15:64a57183aa03 | 564 | |
icraggs | 23:05fc7de97d4a | 565 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS> |
icraggs | 23:05fc7de97d4a | 566 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::unsubscribe(const char* topicFilter) |
icraggs | 20:cad3d54d7ecf | 567 | { |
icraggs | 26:2658bb87c53d | 568 | int rc = FAILURE; |
icraggs | 23:05fc7de97d4a | 569 | Timer timer = Timer(command_timeout_ms); |
icraggs | 20:cad3d54d7ecf | 570 | |
Ian Craggs |
12:cc7f2d62a393 | 571 | MQTTString topic = {(char*)topicFilter, 0, 0}; |
icraggs | 8:c46930bd6c82 | 572 | |
icraggs | 26:2658bb87c53d | 573 | int len = MQTTSerialize_unsubscribe(buf, MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic); |
icraggs | 26:2658bb87c53d | 574 | if (len <= 0) |
icraggs | 20:cad3d54d7ecf | 575 | goto exit; |
icraggs | 23:05fc7de97d4a | 576 | if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet |
icraggs | 20:cad3d54d7ecf | 577 | goto exit; // there was a problem |
Ian Craggs |
12:cc7f2d62a393 | 578 | |
icraggs | 20:cad3d54d7ecf | 579 | if (waitfor(UNSUBACK, timer) == UNSUBACK) |
Ian Craggs |
12:cc7f2d62a393 | 580 | { |
icraggs | 20:cad3d54d7ecf | 581 | int mypacketid; // should be the same as the packetid above |
icraggs | 23:05fc7de97d4a | 582 | if (MQTTDeserialize_unsuback(&mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 583 | rc = 0; |
Ian Craggs |
12:cc7f2d62a393 | 584 | } |
icraggs | 26:2658bb87c53d | 585 | else |
icraggs | 26:2658bb87c53d | 586 | rc = FAILURE; |
icraggs | 15:64a57183aa03 | 587 | |
icraggs | 15:64a57183aa03 | 588 | exit: |
Ian Craggs |
12:cc7f2d62a393 | 589 | return rc; |
icraggs | 15:64a57183aa03 | 590 | } |
icraggs | 15:64a57183aa03 | 591 | |
icraggs | 15:64a57183aa03 | 592 | |
icraggs | 15:64a57183aa03 | 593 | |
icraggs | 23:05fc7de97d4a | 594 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
icraggs | 23:05fc7de97d4a | 595 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(const char* topicName, Message* message) |
icraggs | 20:cad3d54d7ecf | 596 | { |
icraggs | 26:2658bb87c53d | 597 | int rc = FAILURE; |
icraggs | 23:05fc7de97d4a | 598 | Timer timer = Timer(command_timeout_ms); |
icraggs | 20:cad3d54d7ecf | 599 | |
icraggs | 20:cad3d54d7ecf | 600 | MQTTString topicString = {(char*)topicName, 0, 0}; |
icraggs | 15:64a57183aa03 | 601 | |
icraggs | 20:cad3d54d7ecf | 602 | if (message->qos == QOS1 || message->qos == QOS2) |
icraggs | 20:cad3d54d7ecf | 603 | message->id = packetid.getNext(); |
icraggs | 15:64a57183aa03 | 604 | |
icraggs | 23:05fc7de97d4a | 605 | int len = MQTTSerialize_publish(buf, MAX_MQTT_PACKET_SIZE, 0, message->qos, message->retained, message->id, |
icraggs | 20:cad3d54d7ecf | 606 | topicString, (char*)message->payload, message->payloadlen); |
icraggs | 26:2658bb87c53d | 607 | if (len <= 0) |
icraggs | 26:2658bb87c53d | 608 | goto exit; |
icraggs | 26:2658bb87c53d | 609 | if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet |
icraggs | 20:cad3d54d7ecf | 610 | goto exit; // there was a problem |
Ian Craggs |
12:cc7f2d62a393 | 611 | |
icraggs | 20:cad3d54d7ecf | 612 | if (message->qos == QOS1) |
Ian Craggs |
12:cc7f2d62a393 | 613 | { |
icraggs | 20:cad3d54d7ecf | 614 | if (waitfor(PUBACK, timer) == PUBACK) |
icraggs | 20:cad3d54d7ecf | 615 | { |
icraggs | 20:cad3d54d7ecf | 616 | int type, dup, mypacketid; |
icraggs | 26:2658bb87c53d | 617 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
icraggs | 26:2658bb87c53d | 618 | rc = FAILURE; |
icraggs | 20:cad3d54d7ecf | 619 | } |
icraggs | 26:2658bb87c53d | 620 | else |
icraggs | 26:2658bb87c53d | 621 | rc = FAILURE; |
Ian Craggs |
12:cc7f2d62a393 | 622 | } |
icraggs | 20:cad3d54d7ecf | 623 | else if (message->qos == QOS2) |
Ian Craggs |
12:cc7f2d62a393 | 624 | { |
icraggs | 20:cad3d54d7ecf | 625 | if (waitfor(PUBCOMP, timer) == PUBCOMP) |
icraggs | 20:cad3d54d7ecf | 626 | { |
icraggs | 20:cad3d54d7ecf | 627 | int type, dup, mypacketid; |
icraggs | 26:2658bb87c53d | 628 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
icraggs | 26:2658bb87c53d | 629 | rc = FAILURE; |
icraggs | 20:cad3d54d7ecf | 630 | } |
icraggs | 26:2658bb87c53d | 631 | else |
icraggs | 26:2658bb87c53d | 632 | rc = FAILURE; |
Ian Craggs |
12:cc7f2d62a393 | 633 | } |
icraggs | 15:64a57183aa03 | 634 | |
icraggs | 15:64a57183aa03 | 635 | exit: |
icraggs | 8:c46930bd6c82 | 636 | return rc; |
icraggs | 8:c46930bd6c82 | 637 | } |
icraggs | 8:c46930bd6c82 | 638 | |
icraggs | 8:c46930bd6c82 | 639 | |
icraggs | 23:05fc7de97d4a | 640 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
icraggs | 23:05fc7de97d4a | 641 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::disconnect() |
icraggs | 20:cad3d54d7ecf | 642 | { |
icraggs | 26:2658bb87c53d | 643 | int rc = FAILURE; |
icraggs | 23:05fc7de97d4a | 644 | Timer timer = Timer(command_timeout_ms); // we might wait for incomplete incoming publishes to complete |
icraggs | 23:05fc7de97d4a | 645 | int len = MQTTSerialize_disconnect(buf, MAX_MQTT_PACKET_SIZE); |
icraggs | 26:2658bb87c53d | 646 | if (len > 0) |
icraggs | 26:2658bb87c53d | 647 | rc = sendPacket(len, timer); // send the disconnect packet |
icraggs | 26:2658bb87c53d | 648 | |
icraggs | 23:05fc7de97d4a | 649 | return rc; |
icraggs | 20:cad3d54d7ecf | 650 | } |
icraggs | 20:cad3d54d7ecf | 651 | |
icraggs | 20:cad3d54d7ecf | 652 | |
icraggs | 20:cad3d54d7ecf | 653 | #endif |