An API for using MQTT over multiple transports
Fork of MQTT by
MQTTClient.h@26:2658bb87c53d, 2014-05-11 (annotated)
- Committer:
- icraggs
- Date:
- Sun May 11 18:19:07 2014 +0000
- Revision:
- 26:2658bb87c53d
- Parent:
- 23:05fc7de97d4a
- Child:
- 28:8b2abe9bd814
Wildcard subscription support. Limits as template parameters.
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 | |
icraggs | 21:e918525e529d | 23 | */ |
sam_grove | 0:fe461e4d7afe | 24 | |
icraggs | 2:dcfdd2abfe71 | 25 | #if !defined(MQTTCLIENT_H) |
icraggs | 2:dcfdd2abfe71 | 26 | #define MQTTCLIENT_H |
icraggs | 2:dcfdd2abfe71 | 27 | |
icraggs | 2:dcfdd2abfe71 | 28 | #include "FP.h" |
icraggs | 3:dbff6b768d28 | 29 | #include "MQTTPacket.h" |
icraggs | 6:4d312a49200b | 30 | #include "stdio.h" |
icraggs | 2:dcfdd2abfe71 | 31 | |
icraggs | 3:dbff6b768d28 | 32 | namespace MQTT |
icraggs | 3:dbff6b768d28 | 33 | { |
icraggs | 3:dbff6b768d28 | 34 | |
icraggs | 2:dcfdd2abfe71 | 35 | |
icraggs | 2:dcfdd2abfe71 | 36 | enum QoS { QOS0, QOS1, QOS2 }; |
sam_grove | 0:fe461e4d7afe | 37 | |
icraggs | 23:05fc7de97d4a | 38 | enum returnCode { BUFFER_OVERFLOW = -2, FAILURE = -1, SUCCESS = 0 }; |
icraggs | 23:05fc7de97d4a | 39 | |
icraggs | 2:dcfdd2abfe71 | 40 | |
icraggs | 3:dbff6b768d28 | 41 | struct Message |
icraggs | 2:dcfdd2abfe71 | 42 | { |
icraggs | 2:dcfdd2abfe71 | 43 | enum QoS qos; |
icraggs | 2:dcfdd2abfe71 | 44 | bool retained; |
icraggs | 2:dcfdd2abfe71 | 45 | bool dup; |
Ian Craggs |
12:cc7f2d62a393 | 46 | unsigned short id; |
icraggs | 2:dcfdd2abfe71 | 47 | void *payload; |
icraggs | 2:dcfdd2abfe71 | 48 | size_t payloadlen; |
sam_grove | 0:fe461e4d7afe | 49 | }; |
sam_grove | 0:fe461e4d7afe | 50 | |
icraggs | 4:4ef00243708e | 51 | |
icraggs | 20:cad3d54d7ecf | 52 | struct MessageData |
icraggs | 20:cad3d54d7ecf | 53 | { |
icraggs | 20:cad3d54d7ecf | 54 | struct Message message; |
icraggs | 20:cad3d54d7ecf | 55 | char* topicName; |
icraggs | 20:cad3d54d7ecf | 56 | }; |
icraggs | 20:cad3d54d7ecf | 57 | |
icraggs | 20:cad3d54d7ecf | 58 | |
icraggs | 9:01b8cc7d94cc | 59 | class PacketId |
icraggs | 9:01b8cc7d94cc | 60 | { |
icraggs | 9:01b8cc7d94cc | 61 | public: |
icraggs | 23:05fc7de97d4a | 62 | PacketId() |
icraggs | 23:05fc7de97d4a | 63 | { |
icraggs | 23:05fc7de97d4a | 64 | next = 0; |
icraggs | 23:05fc7de97d4a | 65 | } |
icraggs | 9:01b8cc7d94cc | 66 | |
icraggs | 23:05fc7de97d4a | 67 | int getNext() |
icraggs | 23:05fc7de97d4a | 68 | { |
icraggs | 23:05fc7de97d4a | 69 | return next = (next == MAX_PACKET_ID) ? 1 : ++next; |
icraggs | 23:05fc7de97d4a | 70 | } |
Ian Craggs |
12:cc7f2d62a393 | 71 | |
icraggs | 9:01b8cc7d94cc | 72 | private: |
icraggs | 9:01b8cc7d94cc | 73 | static const int MAX_PACKET_ID = 65535; |
icraggs | 9:01b8cc7d94cc | 74 | int next; |
icraggs | 9:01b8cc7d94cc | 75 | }; |
icraggs | 2:dcfdd2abfe71 | 76 | |
icraggs | 16:91c2f9a144d4 | 77 | |
icraggs | 21:e918525e529d | 78 | /** |
icraggs | 21:e918525e529d | 79 | * @class Client |
icraggs | 22:aadb79d29330 | 80 | * @brief blocking, non-threaded MQTT client API |
icraggs | 23:05fc7de97d4a | 81 | * |
icraggs | 23:05fc7de97d4a | 82 | * This version of the API blocks on all method calls, until they are complete. This means that only one |
icraggs | 23:05fc7de97d4a | 83 | * MQTT request can be in process at any one time. |
icraggs | 21:e918525e529d | 84 | * @param Network a network class which supports send, receive |
icraggs | 21:e918525e529d | 85 | * @param Timer a timer class with the methods: |
icraggs | 21:e918525e529d | 86 | */ |
icraggs | 23:05fc7de97d4a | 87 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE = 100, int MAX_MESSAGE_HANDLERS = 5> class Client |
icraggs | 2:dcfdd2abfe71 | 88 | { |
icraggs | 2:dcfdd2abfe71 | 89 | |
icraggs | 22:aadb79d29330 | 90 | public: |
icraggs | 26:2658bb87c53d | 91 | |
icraggs | 23:05fc7de97d4a | 92 | typedef void (*messageHandler)(Message*); |
icraggs | 23:05fc7de97d4a | 93 | |
icraggs | 23:05fc7de97d4a | 94 | /** Construct the client |
icraggs | 23:05fc7de97d4a | 95 | * @param network - pointer to an instance of the Network class - must be connected to the endpoint |
icraggs | 23:05fc7de97d4a | 96 | * before calling MQTT connect |
icraggs | 23:05fc7de97d4a | 97 | * @param limits an instance of the Limit class - to alter limits as required |
icraggs | 23:05fc7de97d4a | 98 | */ |
icraggs | 23:05fc7de97d4a | 99 | Client(Network& network, unsigned int command_timeout_ms = 30000); |
icraggs | 20:cad3d54d7ecf | 100 | |
icraggs | 20:cad3d54d7ecf | 101 | /** Set the default message handling callback - used for any message which does not match a subscription message handler |
icraggs | 20:cad3d54d7ecf | 102 | * @param mh - pointer to the callback function |
icraggs | 20:cad3d54d7ecf | 103 | */ |
icraggs | 20:cad3d54d7ecf | 104 | void setDefaultMessageHandler(messageHandler mh) |
icraggs | 20:cad3d54d7ecf | 105 | { |
icraggs | 20:cad3d54d7ecf | 106 | defaultMessageHandler.attach(mh); |
icraggs | 20:cad3d54d7ecf | 107 | } |
icraggs | 2:dcfdd2abfe71 | 108 | |
icraggs | 20:cad3d54d7ecf | 109 | /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack |
icraggs | 20:cad3d54d7ecf | 110 | * The nework object must be connected to the network endpoint before calling this |
icraggs | 20:cad3d54d7ecf | 111 | * @param options - connect options |
icraggs | 20:cad3d54d7ecf | 112 | * @return success code - |
icraggs | 20:cad3d54d7ecf | 113 | */ |
icraggs | 20:cad3d54d7ecf | 114 | int connect(MQTTPacket_connectData* options = 0); |
icraggs | 20:cad3d54d7ecf | 115 | |
icraggs | 20:cad3d54d7ecf | 116 | /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs |
icraggs | 20:cad3d54d7ecf | 117 | * @param topic - the topic to publish to |
icraggs | 20:cad3d54d7ecf | 118 | * @param message - the message to send |
icraggs | 20:cad3d54d7ecf | 119 | * @return success code - |
icraggs | 20:cad3d54d7ecf | 120 | */ |
icraggs | 20:cad3d54d7ecf | 121 | int publish(const char* topicName, Message* message); |
icraggs | 20:cad3d54d7ecf | 122 | |
icraggs | 20:cad3d54d7ecf | 123 | /** MQTT Subscribe - send an MQTT subscribe packet and wait for the suback |
icraggs | 20:cad3d54d7ecf | 124 | * @param topicFilter - a topic pattern which can include wildcards |
icraggs | 20:cad3d54d7ecf | 125 | * @param qos - the MQTT QoS to subscribe at |
icraggs | 20:cad3d54d7ecf | 126 | * @param mh - the callback function to be invoked when a message is received for this subscription |
icraggs | 20:cad3d54d7ecf | 127 | * @return success code - |
icraggs | 20:cad3d54d7ecf | 128 | */ |
icraggs | 20:cad3d54d7ecf | 129 | int subscribe(const char* topicFilter, enum QoS qos, messageHandler mh); |
icraggs | 9:01b8cc7d94cc | 130 | |
icraggs | 20:cad3d54d7ecf | 131 | /** MQTT Unsubscribe - send an MQTT unsubscribe packet and wait for the unsuback |
icraggs | 20:cad3d54d7ecf | 132 | * @param topicFilter - a topic pattern which can include wildcards |
icraggs | 20:cad3d54d7ecf | 133 | * @return success code - |
icraggs | 20:cad3d54d7ecf | 134 | */ |
icraggs | 20:cad3d54d7ecf | 135 | int unsubscribe(const char* topicFilter); |
icraggs | 20:cad3d54d7ecf | 136 | |
icraggs | 20:cad3d54d7ecf | 137 | /** MQTT Disconnect - send an MQTT disconnect packet |
icraggs | 20:cad3d54d7ecf | 138 | * @return success code - |
icraggs | 20:cad3d54d7ecf | 139 | */ |
icraggs | 20:cad3d54d7ecf | 140 | int disconnect(); |
icraggs | 8:c46930bd6c82 | 141 | |
icraggs | 20:cad3d54d7ecf | 142 | /** A call to this API must be made within the keepAlive interval to keep the MQTT connection alive |
icraggs | 20:cad3d54d7ecf | 143 | * yield can be called if no other MQTT operation is needed. This will also allow messages to be |
icraggs | 20:cad3d54d7ecf | 144 | * received. |
icraggs | 23:05fc7de97d4a | 145 | * @param timeout_ms the time to wait, in milliseconds |
icraggs | 26:2658bb87c53d | 146 | * @return success code - on failure, this means the client has disconnected |
icraggs | 20:cad3d54d7ecf | 147 | */ |
icraggs | 26:2658bb87c53d | 148 | int yield(int timeout_ms = 1000); |
icraggs | 20:cad3d54d7ecf | 149 | |
icraggs | 20:cad3d54d7ecf | 150 | private: |
icraggs | 20:cad3d54d7ecf | 151 | |
icraggs | 20:cad3d54d7ecf | 152 | int cycle(Timer& timer); |
icraggs | 20:cad3d54d7ecf | 153 | int waitfor(int packet_type, Timer& timer); |
icraggs | 20:cad3d54d7ecf | 154 | int keepalive(); |
icraggs | 2:dcfdd2abfe71 | 155 | |
icraggs | 3:dbff6b768d28 | 156 | int decodePacket(int* value, int timeout); |
icraggs | 20:cad3d54d7ecf | 157 | int readPacket(Timer& timer); |
icraggs | 20:cad3d54d7ecf | 158 | int sendPacket(int length, Timer& timer); |
icraggs | 26:2658bb87c53d | 159 | int deliverMessage(MQTTString& topicName, Message& message); |
icraggs | 26:2658bb87c53d | 160 | bool isTopicMatched(char* topicFilter, MQTTString& topicName); |
icraggs | 3:dbff6b768d28 | 161 | |
icraggs | 23:05fc7de97d4a | 162 | Network& ipstack; |
icraggs | 23:05fc7de97d4a | 163 | unsigned int command_timeout_ms; |
icraggs | 16:91c2f9a144d4 | 164 | |
icraggs | 23:05fc7de97d4a | 165 | char buf[MAX_MQTT_PACKET_SIZE]; |
icraggs | 23:05fc7de97d4a | 166 | char readbuf[MAX_MQTT_PACKET_SIZE]; |
icraggs | 15:64a57183aa03 | 167 | |
icraggs | 20:cad3d54d7ecf | 168 | Timer ping_timer; |
icraggs | 15:64a57183aa03 | 169 | unsigned int keepAliveInterval; |
icraggs | 20:cad3d54d7ecf | 170 | bool ping_outstanding; |
icraggs | 4:4ef00243708e | 171 | |
icraggs | 9:01b8cc7d94cc | 172 | PacketId packetid; |
icraggs | 9:01b8cc7d94cc | 173 | |
icraggs | 9:01b8cc7d94cc | 174 | typedef FP<void, Message*> messageHandlerFP; |
icraggs | 16:91c2f9a144d4 | 175 | struct MessageHandlers |
icraggs | 15:64a57183aa03 | 176 | { |
icraggs | 26:2658bb87c53d | 177 | const char* topicFilter; |
icraggs | 20:cad3d54d7ecf | 178 | messageHandlerFP fp; |
icraggs | 23:05fc7de97d4a | 179 | } messageHandlers[MAX_MESSAGE_HANDLERS]; // Message handlers are indexed by subscription topic |
icraggs | 15:64a57183aa03 | 180 | |
icraggs | 20:cad3d54d7ecf | 181 | messageHandlerFP defaultMessageHandler; |
icraggs | 20:cad3d54d7ecf | 182 | |
icraggs | 26:2658bb87c53d | 183 | bool isconnected; |
sam_grove | 0:fe461e4d7afe | 184 | }; |
sam_grove | 0:fe461e4d7afe | 185 | |
icraggs | 15:64a57183aa03 | 186 | } |
icraggs | 15:64a57183aa03 | 187 | |
icraggs | 15:64a57183aa03 | 188 | |
icraggs | 23:05fc7de97d4a | 189 | template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS> |
icraggs | 23:05fc7de97d4a | 190 | MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::Client(Network& network, unsigned int command_timeout_ms) : ipstack(network), packetid() |
icraggs | 15:64a57183aa03 | 191 | { |
icraggs | 23:05fc7de97d4a | 192 | ping_timer = Timer(); |
icraggs | 23:05fc7de97d4a | 193 | ping_outstanding = 0; |
icraggs | 23:05fc7de97d4a | 194 | for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i) |
icraggs | 26:2658bb87c53d | 195 | messageHandlers[i].topicFilter = 0; |
icraggs | 26:2658bb87c53d | 196 | this->command_timeout_ms = command_timeout_ms; |
icraggs | 26:2658bb87c53d | 197 | isconnected = false; |
icraggs | 11:db15da110a37 | 198 | } |
icraggs | 11:db15da110a37 | 199 | |
icraggs | 11:db15da110a37 | 200 | |
icraggs | 23:05fc7de97d4a | 201 | template<class Network, class Timer, int a, int b> |
icraggs | 23:05fc7de97d4a | 202 | int MQTT::Client<Network, Timer, a, b>::sendPacket(int length, Timer& timer) |
icraggs | 8:c46930bd6c82 | 203 | { |
icraggs | 23:05fc7de97d4a | 204 | int rc = FAILURE, |
icraggs | 23:05fc7de97d4a | 205 | sent = 0; |
icraggs | 8:c46930bd6c82 | 206 | |
icraggs | 23:05fc7de97d4a | 207 | while (sent < length && !timer.expired()) |
icraggs | 23:05fc7de97d4a | 208 | { |
icraggs | 23:05fc7de97d4a | 209 | rc = ipstack.write(&buf[sent], length, timer.left_ms()); |
icraggs | 26:2658bb87c53d | 210 | if (rc < 0) // there was an error writing the data |
icraggs | 26:2658bb87c53d | 211 | break; |
icraggs | 26:2658bb87c53d | 212 | sent += rc; |
icraggs | 23:05fc7de97d4a | 213 | } |
icraggs | 20:cad3d54d7ecf | 214 | if (sent == length) |
icraggs | 23:05fc7de97d4a | 215 | { |
icraggs | 20:cad3d54d7ecf | 216 | ping_timer.countdown(this->keepAliveInterval); // record the fact that we have successfully sent the packet |
icraggs | 23:05fc7de97d4a | 217 | rc = SUCCESS; |
icraggs | 23:05fc7de97d4a | 218 | } |
icraggs | 23:05fc7de97d4a | 219 | else |
icraggs | 23:05fc7de97d4a | 220 | rc = FAILURE; |
icraggs | 23:05fc7de97d4a | 221 | return rc; |
icraggs | 8:c46930bd6c82 | 222 | } |
icraggs | 8:c46930bd6c82 | 223 | |
icraggs | 8:c46930bd6c82 | 224 | |
icraggs | 26:2658bb87c53d | 225 | template<class Network, class Timer, int a, int b> |
icraggs | 26:2658bb87c53d | 226 | int MQTT::Client<Network, Timer, a, b>::decodePacket(int* value, int timeout) |
icraggs | 8:c46930bd6c82 | 227 | { |
icraggs | 8:c46930bd6c82 | 228 | char c; |
icraggs | 8:c46930bd6c82 | 229 | int multiplier = 1; |
icraggs | 8:c46930bd6c82 | 230 | int len = 0; |
icraggs | 20:cad3d54d7ecf | 231 | const int MAX_NO_OF_REMAINING_LENGTH_BYTES = 4; |
icraggs | 8:c46930bd6c82 | 232 | |
icraggs | 8:c46930bd6c82 | 233 | *value = 0; |
icraggs | 8:c46930bd6c82 | 234 | do |
icraggs | 8:c46930bd6c82 | 235 | { |
icraggs | 8:c46930bd6c82 | 236 | int rc = MQTTPACKET_READ_ERROR; |
icraggs | 8:c46930bd6c82 | 237 | |
icraggs | 8:c46930bd6c82 | 238 | if (++len > MAX_NO_OF_REMAINING_LENGTH_BYTES) |
icraggs | 8:c46930bd6c82 | 239 | { |
icraggs | 8:c46930bd6c82 | 240 | rc = MQTTPACKET_READ_ERROR; /* bad data */ |
icraggs | 8:c46930bd6c82 | 241 | goto exit; |
icraggs | 8:c46930bd6c82 | 242 | } |
icraggs | 23:05fc7de97d4a | 243 | rc = ipstack.read(&c, 1, timeout); |
icraggs | 8:c46930bd6c82 | 244 | if (rc != 1) |
icraggs | 8:c46930bd6c82 | 245 | goto exit; |
icraggs | 8:c46930bd6c82 | 246 | *value += (c & 127) * multiplier; |
icraggs | 8:c46930bd6c82 | 247 | multiplier *= 128; |
icraggs | 8:c46930bd6c82 | 248 | } while ((c & 128) != 0); |
icraggs | 8:c46930bd6c82 | 249 | exit: |
icraggs | 8:c46930bd6c82 | 250 | return len; |
icraggs | 8:c46930bd6c82 | 251 | } |
icraggs | 8:c46930bd6c82 | 252 | |
icraggs | 8:c46930bd6c82 | 253 | |
icraggs | 8:c46930bd6c82 | 254 | /** |
icraggs | 8:c46930bd6c82 | 255 | * If any read fails in this method, then we should disconnect from the network, as on reconnect |
icraggs | 8:c46930bd6c82 | 256 | * the packets can be retried. |
icraggs | 8:c46930bd6c82 | 257 | * @param timeout the max time to wait for the packet read to complete, in milliseconds |
icraggs | 8:c46930bd6c82 | 258 | * @return the MQTT packet type, or -1 if none |
icraggs | 8:c46930bd6c82 | 259 | */ |
icraggs | 23:05fc7de97d4a | 260 | template<class Network, class Timer, int a, int b> |
icraggs | 23:05fc7de97d4a | 261 | int MQTT::Client<Network, Timer, a, b>::readPacket(Timer& timer) |
icraggs | 8:c46930bd6c82 | 262 | { |
icraggs | 26:2658bb87c53d | 263 | int rc = FAILURE; |
icraggs | 8:c46930bd6c82 | 264 | MQTTHeader header = {0}; |
icraggs | 8:c46930bd6c82 | 265 | int len = 0; |
icraggs | 8:c46930bd6c82 | 266 | int rem_len = 0; |
icraggs | 8:c46930bd6c82 | 267 | |
icraggs | 8:c46930bd6c82 | 268 | /* 1. read the header byte. This has the packet type in it */ |
icraggs | 23:05fc7de97d4a | 269 | if (ipstack.read(readbuf, 1, timer.left_ms()) != 1) |
icraggs | 8:c46930bd6c82 | 270 | goto exit; |
icraggs | 8:c46930bd6c82 | 271 | |
icraggs | 8:c46930bd6c82 | 272 | len = 1; |
icraggs | 8:c46930bd6c82 | 273 | /* 2. read the remaining length. This is variable in itself */ |
icraggs | 20:cad3d54d7ecf | 274 | decodePacket(&rem_len, timer.left_ms()); |
icraggs | 8:c46930bd6c82 | 275 | len += MQTTPacket_encode(readbuf + 1, rem_len); /* put the original remaining length back into the buffer */ |
icraggs | 8:c46930bd6c82 | 276 | |
icraggs | 8:c46930bd6c82 | 277 | /* 3. read the rest of the buffer using a callback to supply the rest of the data */ |
icraggs | 23:05fc7de97d4a | 278 | if (ipstack.read(readbuf + len, rem_len, timer.left_ms()) != rem_len) |
icraggs | 8:c46930bd6c82 | 279 | goto exit; |
icraggs | 8:c46930bd6c82 | 280 | |
icraggs | 8:c46930bd6c82 | 281 | header.byte = readbuf[0]; |
icraggs | 8:c46930bd6c82 | 282 | rc = header.bits.type; |
icraggs | 8:c46930bd6c82 | 283 | exit: |
icraggs | 8:c46930bd6c82 | 284 | return rc; |
icraggs | 3:dbff6b768d28 | 285 | } |
icraggs | 3:dbff6b768d28 | 286 | |
icraggs | 8:c46930bd6c82 | 287 | |
icraggs | 26:2658bb87c53d | 288 | // assume topic filter and name is in correct format |
icraggs | 26:2658bb87c53d | 289 | // # can only be at end |
icraggs | 26:2658bb87c53d | 290 | // + and # can only be next to separator |
icraggs | 26:2658bb87c53d | 291 | template<class Network, class Timer, int a, int b> |
icraggs | 26:2658bb87c53d | 292 | bool MQTT::Client<Network, Timer, a, b>::isTopicMatched(char* topicFilter, MQTTString& topicName) |
icraggs | 26:2658bb87c53d | 293 | { |
icraggs | 26:2658bb87c53d | 294 | char* curf = topicFilter; |
icraggs | 26:2658bb87c53d | 295 | char* curn = topicName.lenstring.data; |
icraggs | 26:2658bb87c53d | 296 | char* curn_end = curn + topicName.lenstring.len; |
icraggs | 26:2658bb87c53d | 297 | |
icraggs | 26:2658bb87c53d | 298 | while (*curf && curn < curn_end) |
icraggs | 26:2658bb87c53d | 299 | { |
icraggs | 26:2658bb87c53d | 300 | if (*curn == '/' && *curf != '/') |
icraggs | 26:2658bb87c53d | 301 | break; |
icraggs | 26:2658bb87c53d | 302 | if (*curf != '+' && *curf != '#' && *curf != *curn) |
icraggs | 26:2658bb87c53d | 303 | break; |
icraggs | 26:2658bb87c53d | 304 | if (*curf == '+') |
icraggs | 26:2658bb87c53d | 305 | { // skip until we meet the next separator, or end of string |
icraggs | 26:2658bb87c53d | 306 | char* nextpos = curn + 1; |
icraggs | 26:2658bb87c53d | 307 | while (nextpos < curn_end && *nextpos != '/') |
icraggs | 26:2658bb87c53d | 308 | nextpos = ++curn + 1; |
icraggs | 26:2658bb87c53d | 309 | } |
icraggs | 26:2658bb87c53d | 310 | else if (*curf == '#') |
icraggs | 26:2658bb87c53d | 311 | curn = curn_end - 1; // skip until end of string |
icraggs | 26:2658bb87c53d | 312 | curf++; |
icraggs | 26:2658bb87c53d | 313 | curn++; |
icraggs | 26:2658bb87c53d | 314 | }; |
icraggs | 26:2658bb87c53d | 315 | |
icraggs | 26:2658bb87c53d | 316 | return (curn == curn_end) && (*curf == '\0'); |
icraggs | 26:2658bb87c53d | 317 | } |
icraggs | 26:2658bb87c53d | 318 | |
icraggs | 26:2658bb87c53d | 319 | |
icraggs | 26:2658bb87c53d | 320 | |
icraggs | 23:05fc7de97d4a | 321 | template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS> |
icraggs | 26:2658bb87c53d | 322 | int MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::deliverMessage(MQTTString& topicName, Message& message) |
icraggs | 15:64a57183aa03 | 323 | { |
icraggs | 26:2658bb87c53d | 324 | int rc = FAILURE; |
icraggs | 20:cad3d54d7ecf | 325 | |
icraggs | 20:cad3d54d7ecf | 326 | // we have to find the right message handler - indexed by topic |
icraggs | 23:05fc7de97d4a | 327 | for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i) |
icraggs | 20:cad3d54d7ecf | 328 | { |
icraggs | 26:2658bb87c53d | 329 | if (messageHandlers[i].topicFilter != 0 && (MQTTPacket_equals(&topicName, (char*)messageHandlers[i].topicFilter) || |
icraggs | 26:2658bb87c53d | 330 | isTopicMatched((char*)messageHandlers[i].topicFilter, topicName))) |
icraggs | 20:cad3d54d7ecf | 331 | { |
icraggs | 26:2658bb87c53d | 332 | if (messageHandlers[i].fp.attached()) |
icraggs | 26:2658bb87c53d | 333 | { |
icraggs | 26:2658bb87c53d | 334 | messageHandlers[i].fp(&message); |
icraggs | 26:2658bb87c53d | 335 | rc = SUCCESS; |
icraggs | 26:2658bb87c53d | 336 | } |
icraggs | 20:cad3d54d7ecf | 337 | } |
icraggs | 20:cad3d54d7ecf | 338 | } |
icraggs | 26:2658bb87c53d | 339 | |
icraggs | 26:2658bb87c53d | 340 | if (rc == FAILURE && defaultMessageHandler.attached()) |
icraggs | 26:2658bb87c53d | 341 | { |
icraggs | 26:2658bb87c53d | 342 | defaultMessageHandler(&message); |
icraggs | 26:2658bb87c53d | 343 | rc = SUCCESS; |
icraggs | 26:2658bb87c53d | 344 | } |
icraggs | 20:cad3d54d7ecf | 345 | |
icraggs | 20:cad3d54d7ecf | 346 | return rc; |
icraggs | 15:64a57183aa03 | 347 | } |
icraggs | 15:64a57183aa03 | 348 | |
icraggs | 15:64a57183aa03 | 349 | |
icraggs | 20:cad3d54d7ecf | 350 | |
icraggs | 23:05fc7de97d4a | 351 | template<class Network, class Timer, int a, int b> |
icraggs | 26:2658bb87c53d | 352 | int MQTT::Client<Network, Timer, a, b>::yield(int timeout_ms) |
icraggs | 20:cad3d54d7ecf | 353 | { |
icraggs | 26:2658bb87c53d | 354 | int rc = SUCCESS; |
icraggs | 20:cad3d54d7ecf | 355 | Timer timer = Timer(); |
icraggs | 20:cad3d54d7ecf | 356 | |
icraggs | 23:05fc7de97d4a | 357 | timer.countdown_ms(timeout_ms); |
icraggs | 20:cad3d54d7ecf | 358 | while (!timer.expired()) |
icraggs | 26:2658bb87c53d | 359 | { |
icraggs | 26:2658bb87c53d | 360 | if (cycle(timer) == FAILURE) |
icraggs | 26:2658bb87c53d | 361 | { |
icraggs | 26:2658bb87c53d | 362 | rc = FAILURE; |
icraggs | 26:2658bb87c53d | 363 | break; |
icraggs | 26:2658bb87c53d | 364 | } |
icraggs | 26:2658bb87c53d | 365 | } |
icraggs | 26:2658bb87c53d | 366 | |
icraggs | 26:2658bb87c53d | 367 | return rc; |
icraggs | 20:cad3d54d7ecf | 368 | } |
icraggs | 20:cad3d54d7ecf | 369 | |
icraggs | 20:cad3d54d7ecf | 370 | |
icraggs | 23:05fc7de97d4a | 371 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
icraggs | 23:05fc7de97d4a | 372 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::cycle(Timer& timer) |
icraggs | 8:c46930bd6c82 | 373 | { |
icraggs | 8:c46930bd6c82 | 374 | /* get one piece of work off the wire and one pass through */ |
icraggs | 20:cad3d54d7ecf | 375 | |
Ian Craggs |
12:cc7f2d62a393 | 376 | // read the socket, see what work is due |
icraggs | 20:cad3d54d7ecf | 377 | int packet_type = readPacket(timer); |
icraggs | 15:64a57183aa03 | 378 | |
icraggs | 26:2658bb87c53d | 379 | int len = 0, |
icraggs | 26:2658bb87c53d | 380 | rc = SUCCESS; |
icraggs | 8:c46930bd6c82 | 381 | switch (packet_type) |
icraggs | 8:c46930bd6c82 | 382 | { |
icraggs | 15:64a57183aa03 | 383 | case CONNACK: |
icraggs | 8:c46930bd6c82 | 384 | case PUBACK: |
icraggs | 8:c46930bd6c82 | 385 | case SUBACK: |
icraggs | 8:c46930bd6c82 | 386 | break; |
icraggs | 15:64a57183aa03 | 387 | case PUBLISH: |
icraggs | 20:cad3d54d7ecf | 388 | MQTTString topicName; |
icraggs | 20:cad3d54d7ecf | 389 | Message msg; |
icraggs | 26:2658bb87c53d | 390 | if (MQTTDeserialize_publish((int*)&msg.dup, (int*)&msg.qos, (int*)&msg.retained, (int*)&msg.id, &topicName, |
icraggs | 26:2658bb87c53d | 391 | (char**)&msg.payload, (int*)&msg.payloadlen, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
icraggs | 26:2658bb87c53d | 392 | goto exit; |
icraggs | 26:2658bb87c53d | 393 | deliverMessage(topicName, msg); |
icraggs | 20:cad3d54d7ecf | 394 | if (msg.qos != QOS0) |
icraggs | 20:cad3d54d7ecf | 395 | { |
icraggs | 20:cad3d54d7ecf | 396 | if (msg.qos == QOS1) |
icraggs | 23:05fc7de97d4a | 397 | len = MQTTSerialize_ack(buf, MAX_MQTT_PACKET_SIZE, PUBACK, 0, msg.id); |
icraggs | 20:cad3d54d7ecf | 398 | else if (msg.qos == QOS2) |
icraggs | 23:05fc7de97d4a | 399 | len = MQTTSerialize_ack(buf, MAX_MQTT_PACKET_SIZE, PUBREC, 0, msg.id); |
icraggs | 26:2658bb87c53d | 400 | if (len <= 0) |
icraggs | 26:2658bb87c53d | 401 | rc = FAILURE; |
icraggs | 26:2658bb87c53d | 402 | else |
icraggs | 26:2658bb87c53d | 403 | rc = sendPacket(len, timer); |
icraggs | 26:2658bb87c53d | 404 | if (rc == FAILURE) |
icraggs | 20:cad3d54d7ecf | 405 | goto exit; // there was a problem |
icraggs | 20:cad3d54d7ecf | 406 | } |
Ian Craggs |
12:cc7f2d62a393 | 407 | break; |
icraggs | 15:64a57183aa03 | 408 | case PUBREC: |
icraggs | 20:cad3d54d7ecf | 409 | int type, dup, mypacketid; |
icraggs | 26:2658bb87c53d | 410 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
icraggs | 26:2658bb87c53d | 411 | rc = FAILURE; |
icraggs | 26:2658bb87c53d | 412 | else if ((len = MQTTSerialize_ack(buf, MAX_MQTT_PACKET_SIZE, PUBREL, 0, mypacketid)) <= 0) |
icraggs | 26:2658bb87c53d | 413 | rc = FAILURE; |
icraggs | 26:2658bb87c53d | 414 | else if ((rc = sendPacket(len, timer)) != SUCCESS) // send the PUBREL packet |
icraggs | 26:2658bb87c53d | 415 | rc = FAILURE; // there was a problem |
icraggs | 26:2658bb87c53d | 416 | if (rc == FAILURE) |
icraggs | 20:cad3d54d7ecf | 417 | goto exit; // there was a problem |
icraggs | 8:c46930bd6c82 | 418 | break; |
icraggs | 8:c46930bd6c82 | 419 | case PUBCOMP: |
icraggs | 8:c46930bd6c82 | 420 | break; |
icraggs | 15:64a57183aa03 | 421 | case PINGRESP: |
icraggs | 20:cad3d54d7ecf | 422 | ping_outstanding = false; |
icraggs | 8:c46930bd6c82 | 423 | break; |
icraggs | 15:64a57183aa03 | 424 | } |
icraggs | 20:cad3d54d7ecf | 425 | keepalive(); |
Ian Craggs |
12:cc7f2d62a393 | 426 | exit: |
icraggs | 26:2658bb87c53d | 427 | if (rc == SUCCESS) |
icraggs | 26:2658bb87c53d | 428 | rc = packet_type; |
icraggs | 26:2658bb87c53d | 429 | return rc; |
icraggs | 15:64a57183aa03 | 430 | } |
icraggs | 15:64a57183aa03 | 431 | |
icraggs | 15:64a57183aa03 | 432 | |
icraggs | 23:05fc7de97d4a | 433 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
icraggs | 23:05fc7de97d4a | 434 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::keepalive() |
icraggs | 15:64a57183aa03 | 435 | { |
icraggs | 26:2658bb87c53d | 436 | int rc = FAILURE; |
icraggs | 15:64a57183aa03 | 437 | |
icraggs | 20:cad3d54d7ecf | 438 | if (keepAliveInterval == 0) |
icraggs | 26:2658bb87c53d | 439 | { |
icraggs | 26:2658bb87c53d | 440 | rc = SUCCESS; |
icraggs | 20:cad3d54d7ecf | 441 | goto exit; |
icraggs | 26:2658bb87c53d | 442 | } |
icraggs | 15:64a57183aa03 | 443 | |
icraggs | 20:cad3d54d7ecf | 444 | if (ping_timer.expired()) |
icraggs | 20:cad3d54d7ecf | 445 | { |
icraggs | 26:2658bb87c53d | 446 | if (!ping_outstanding) |
icraggs | 20:cad3d54d7ecf | 447 | { |
icraggs | 20:cad3d54d7ecf | 448 | Timer timer = Timer(1000); |
icraggs | 23:05fc7de97d4a | 449 | int len = MQTTSerialize_pingreq(buf, MAX_MQTT_PACKET_SIZE); |
icraggs | 26:2658bb87c53d | 450 | if (len > 0 && (rc = sendPacket(len, timer)) == SUCCESS) // send the ping packet |
icraggs | 20:cad3d54d7ecf | 451 | ping_outstanding = true; |
icraggs | 20:cad3d54d7ecf | 452 | } |
icraggs | 20:cad3d54d7ecf | 453 | } |
icraggs | 15:64a57183aa03 | 454 | |
icraggs | 15:64a57183aa03 | 455 | exit: |
icraggs | 20:cad3d54d7ecf | 456 | return rc; |
icraggs | 8:c46930bd6c82 | 457 | } |
icraggs | 8:c46930bd6c82 | 458 | |
icraggs | 8:c46930bd6c82 | 459 | |
icraggs | 16:91c2f9a144d4 | 460 | // only used in single-threaded mode where one command at a time is in process |
icraggs | 23:05fc7de97d4a | 461 | template<class Network, class Timer, int a, int b> |
icraggs | 23:05fc7de97d4a | 462 | int MQTT::Client<Network, Timer, a, b>::waitfor(int packet_type, Timer& timer) |
icraggs | 15:64a57183aa03 | 463 | { |
icraggs | 26:2658bb87c53d | 464 | int rc = FAILURE; |
icraggs | 20:cad3d54d7ecf | 465 | |
icraggs | 20:cad3d54d7ecf | 466 | do |
icraggs | 16:91c2f9a144d4 | 467 | { |
icraggs | 20:cad3d54d7ecf | 468 | if (timer.expired()) |
icraggs | 20:cad3d54d7ecf | 469 | break; // we timed out |
icraggs | 20:cad3d54d7ecf | 470 | } |
icraggs | 20:cad3d54d7ecf | 471 | while ((rc = cycle(timer)) != packet_type); |
icraggs | 20:cad3d54d7ecf | 472 | |
icraggs | 20:cad3d54d7ecf | 473 | return rc; |
icraggs | 16:91c2f9a144d4 | 474 | } |
icraggs | 16:91c2f9a144d4 | 475 | |
icraggs | 16:91c2f9a144d4 | 476 | |
icraggs | 23:05fc7de97d4a | 477 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
icraggs | 23:05fc7de97d4a | 478 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::connect(MQTTPacket_connectData* options) |
icraggs | 16:91c2f9a144d4 | 479 | { |
icraggs | 23:05fc7de97d4a | 480 | Timer connect_timer = Timer(command_timeout_ms); |
icraggs | 26:2658bb87c53d | 481 | int rc = FAILURE; |
icraggs | 8:c46930bd6c82 | 482 | |
Ian Craggs |
12:cc7f2d62a393 | 483 | MQTTPacket_connectData default_options = MQTTPacket_connectData_initializer; |
icraggs | 8:c46930bd6c82 | 484 | if (options == 0) |
Ian Craggs |
12:cc7f2d62a393 | 485 | options = &default_options; // set default options if none were supplied |
icraggs | 8:c46930bd6c82 | 486 | |
icraggs | 15:64a57183aa03 | 487 | this->keepAliveInterval = options->keepAliveInterval; |
icraggs | 20:cad3d54d7ecf | 488 | ping_timer.countdown(this->keepAliveInterval); |
icraggs | 23:05fc7de97d4a | 489 | int len = MQTTSerialize_connect(buf, MAX_MQTT_PACKET_SIZE, options); |
icraggs | 26:2658bb87c53d | 490 | if (len <= 0) |
icraggs | 26:2658bb87c53d | 491 | goto exit; |
icraggs | 26:2658bb87c53d | 492 | if ((rc = sendPacket(len, connect_timer)) != SUCCESS) // send the connect packet |
icraggs | 20:cad3d54d7ecf | 493 | goto exit; // there was a problem |
icraggs | 8:c46930bd6c82 | 494 | |
icraggs | 20:cad3d54d7ecf | 495 | // this will be a blocking call, wait for the connack |
icraggs | 20:cad3d54d7ecf | 496 | if (waitfor(CONNACK, connect_timer) == CONNACK) |
icraggs | 15:64a57183aa03 | 497 | { |
icraggs | 20:cad3d54d7ecf | 498 | int connack_rc = -1; |
icraggs | 23:05fc7de97d4a | 499 | if (MQTTDeserialize_connack(&connack_rc, readbuf, MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 500 | rc = connack_rc; |
icraggs | 26:2658bb87c53d | 501 | else |
icraggs | 26:2658bb87c53d | 502 | rc = FAILURE; |
icraggs | 8:c46930bd6c82 | 503 | } |
icraggs | 26:2658bb87c53d | 504 | else |
icraggs | 26:2658bb87c53d | 505 | rc = FAILURE; |
icraggs | 15:64a57183aa03 | 506 | |
icraggs | 15:64a57183aa03 | 507 | exit: |
icraggs | 26:2658bb87c53d | 508 | if (rc == SUCCESS) |
icraggs | 26:2658bb87c53d | 509 | isconnected = true; |
icraggs | 8:c46930bd6c82 | 510 | return rc; |
icraggs | 8:c46930bd6c82 | 511 | } |
icraggs | 8:c46930bd6c82 | 512 | |
icraggs | 8:c46930bd6c82 | 513 | |
icraggs | 23:05fc7de97d4a | 514 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS> |
icraggs | 23:05fc7de97d4a | 515 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::subscribe(const char* topicFilter, enum QoS qos, messageHandler messageHandler) |
icraggs | 20:cad3d54d7ecf | 516 | { |
icraggs | 26:2658bb87c53d | 517 | int rc = FAILURE; |
icraggs | 23:05fc7de97d4a | 518 | Timer timer = Timer(command_timeout_ms); |
icraggs | 26:2658bb87c53d | 519 | int len = 0; |
icraggs | 20:cad3d54d7ecf | 520 | |
icraggs | 8:c46930bd6c82 | 521 | MQTTString topic = {(char*)topicFilter, 0, 0}; |
icraggs | 26:2658bb87c53d | 522 | if (!isconnected) |
icraggs | 20:cad3d54d7ecf | 523 | goto exit; |
icraggs | 26:2658bb87c53d | 524 | |
icraggs | 26:2658bb87c53d | 525 | len = MQTTSerialize_subscribe(buf, MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic, (int*)&qos); |
icraggs | 26:2658bb87c53d | 526 | if (len <= 0) |
icraggs | 26:2658bb87c53d | 527 | goto exit; |
icraggs | 23:05fc7de97d4a | 528 | if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet |
icraggs | 26:2658bb87c53d | 529 | goto exit; // there was a problem |
icraggs | 8:c46930bd6c82 | 530 | |
icraggs | 20:cad3d54d7ecf | 531 | if (waitfor(SUBACK, timer) == SUBACK) // wait for suback |
icraggs | 8:c46930bd6c82 | 532 | { |
icraggs | 20:cad3d54d7ecf | 533 | int count = 0, grantedQoS = -1, mypacketid; |
icraggs | 23:05fc7de97d4a | 534 | if (MQTTDeserialize_suback(&mypacketid, 1, &count, &grantedQoS, readbuf, MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 535 | rc = grantedQoS; // 0, 1, 2 or 0x80 |
icraggs | 20:cad3d54d7ecf | 536 | if (rc != 0x80) |
icraggs | 8:c46930bd6c82 | 537 | { |
icraggs | 23:05fc7de97d4a | 538 | for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i) |
icraggs | 16:91c2f9a144d4 | 539 | { |
icraggs | 26:2658bb87c53d | 540 | if (messageHandlers[i].topicFilter == 0) |
icraggs | 20:cad3d54d7ecf | 541 | { |
icraggs | 26:2658bb87c53d | 542 | messageHandlers[i].topicFilter = topicFilter; |
icraggs | 20:cad3d54d7ecf | 543 | messageHandlers[i].fp.attach(messageHandler); |
icraggs | 20:cad3d54d7ecf | 544 | rc = 0; |
icraggs | 20:cad3d54d7ecf | 545 | break; |
icraggs | 20:cad3d54d7ecf | 546 | } |
icraggs | 16:91c2f9a144d4 | 547 | } |
icraggs | 8:c46930bd6c82 | 548 | } |
icraggs | 8:c46930bd6c82 | 549 | } |
icraggs | 26:2658bb87c53d | 550 | else |
icraggs | 26:2658bb87c53d | 551 | rc = FAILURE; |
icraggs | 26:2658bb87c53d | 552 | |
icraggs | 15:64a57183aa03 | 553 | exit: |
icraggs | 26:2658bb87c53d | 554 | //if (rc == FAILURE) |
icraggs | 26:2658bb87c53d | 555 | // closesession(); |
Ian Craggs |
12:cc7f2d62a393 | 556 | return rc; |
icraggs | 15:64a57183aa03 | 557 | } |
icraggs | 15:64a57183aa03 | 558 | |
icraggs | 15:64a57183aa03 | 559 | |
icraggs | 23:05fc7de97d4a | 560 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS> |
icraggs | 23:05fc7de97d4a | 561 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::unsubscribe(const char* topicFilter) |
icraggs | 20:cad3d54d7ecf | 562 | { |
icraggs | 26:2658bb87c53d | 563 | int rc = FAILURE; |
icraggs | 23:05fc7de97d4a | 564 | Timer timer = Timer(command_timeout_ms); |
icraggs | 20:cad3d54d7ecf | 565 | |
Ian Craggs |
12:cc7f2d62a393 | 566 | MQTTString topic = {(char*)topicFilter, 0, 0}; |
icraggs | 8:c46930bd6c82 | 567 | |
icraggs | 26:2658bb87c53d | 568 | int len = MQTTSerialize_unsubscribe(buf, MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic); |
icraggs | 26:2658bb87c53d | 569 | if (len <= 0) |
icraggs | 20:cad3d54d7ecf | 570 | goto exit; |
icraggs | 23:05fc7de97d4a | 571 | if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet |
icraggs | 20:cad3d54d7ecf | 572 | goto exit; // there was a problem |
Ian Craggs |
12:cc7f2d62a393 | 573 | |
icraggs | 20:cad3d54d7ecf | 574 | if (waitfor(UNSUBACK, timer) == UNSUBACK) |
Ian Craggs |
12:cc7f2d62a393 | 575 | { |
icraggs | 20:cad3d54d7ecf | 576 | int mypacketid; // should be the same as the packetid above |
icraggs | 23:05fc7de97d4a | 577 | if (MQTTDeserialize_unsuback(&mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) == 1) |
icraggs | 20:cad3d54d7ecf | 578 | rc = 0; |
Ian Craggs |
12:cc7f2d62a393 | 579 | } |
icraggs | 26:2658bb87c53d | 580 | else |
icraggs | 26:2658bb87c53d | 581 | rc = FAILURE; |
icraggs | 15:64a57183aa03 | 582 | |
icraggs | 15:64a57183aa03 | 583 | exit: |
Ian Craggs |
12:cc7f2d62a393 | 584 | return rc; |
icraggs | 15:64a57183aa03 | 585 | } |
icraggs | 15:64a57183aa03 | 586 | |
icraggs | 15:64a57183aa03 | 587 | |
icraggs | 15:64a57183aa03 | 588 | |
icraggs | 23:05fc7de97d4a | 589 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
icraggs | 23:05fc7de97d4a | 590 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(const char* topicName, Message* message) |
icraggs | 20:cad3d54d7ecf | 591 | { |
icraggs | 26:2658bb87c53d | 592 | int rc = FAILURE; |
icraggs | 23:05fc7de97d4a | 593 | Timer timer = Timer(command_timeout_ms); |
icraggs | 20:cad3d54d7ecf | 594 | |
icraggs | 20:cad3d54d7ecf | 595 | MQTTString topicString = {(char*)topicName, 0, 0}; |
icraggs | 15:64a57183aa03 | 596 | |
icraggs | 20:cad3d54d7ecf | 597 | if (message->qos == QOS1 || message->qos == QOS2) |
icraggs | 20:cad3d54d7ecf | 598 | message->id = packetid.getNext(); |
icraggs | 15:64a57183aa03 | 599 | |
icraggs | 23:05fc7de97d4a | 600 | int len = MQTTSerialize_publish(buf, MAX_MQTT_PACKET_SIZE, 0, message->qos, message->retained, message->id, |
icraggs | 20:cad3d54d7ecf | 601 | topicString, (char*)message->payload, message->payloadlen); |
icraggs | 26:2658bb87c53d | 602 | if (len <= 0) |
icraggs | 26:2658bb87c53d | 603 | goto exit; |
icraggs | 26:2658bb87c53d | 604 | if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet |
icraggs | 20:cad3d54d7ecf | 605 | goto exit; // there was a problem |
Ian Craggs |
12:cc7f2d62a393 | 606 | |
icraggs | 20:cad3d54d7ecf | 607 | if (message->qos == QOS1) |
Ian Craggs |
12:cc7f2d62a393 | 608 | { |
icraggs | 20:cad3d54d7ecf | 609 | if (waitfor(PUBACK, timer) == PUBACK) |
icraggs | 20:cad3d54d7ecf | 610 | { |
icraggs | 20:cad3d54d7ecf | 611 | int type, dup, mypacketid; |
icraggs | 26:2658bb87c53d | 612 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
icraggs | 26:2658bb87c53d | 613 | rc = FAILURE; |
icraggs | 20:cad3d54d7ecf | 614 | } |
icraggs | 26:2658bb87c53d | 615 | else |
icraggs | 26:2658bb87c53d | 616 | rc = FAILURE; |
Ian Craggs |
12:cc7f2d62a393 | 617 | } |
icraggs | 20:cad3d54d7ecf | 618 | else if (message->qos == QOS2) |
Ian Craggs |
12:cc7f2d62a393 | 619 | { |
icraggs | 20:cad3d54d7ecf | 620 | if (waitfor(PUBCOMP, timer) == PUBCOMP) |
icraggs | 20:cad3d54d7ecf | 621 | { |
icraggs | 20:cad3d54d7ecf | 622 | int type, dup, mypacketid; |
icraggs | 26:2658bb87c53d | 623 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
icraggs | 26:2658bb87c53d | 624 | rc = FAILURE; |
icraggs | 20:cad3d54d7ecf | 625 | } |
icraggs | 26:2658bb87c53d | 626 | else |
icraggs | 26:2658bb87c53d | 627 | rc = FAILURE; |
Ian Craggs |
12:cc7f2d62a393 | 628 | } |
icraggs | 15:64a57183aa03 | 629 | |
icraggs | 15:64a57183aa03 | 630 | exit: |
icraggs | 8:c46930bd6c82 | 631 | return rc; |
icraggs | 8:c46930bd6c82 | 632 | } |
icraggs | 8:c46930bd6c82 | 633 | |
icraggs | 8:c46930bd6c82 | 634 | |
icraggs | 23:05fc7de97d4a | 635 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
icraggs | 23:05fc7de97d4a | 636 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::disconnect() |
icraggs | 20:cad3d54d7ecf | 637 | { |
icraggs | 26:2658bb87c53d | 638 | int rc = FAILURE; |
icraggs | 23:05fc7de97d4a | 639 | Timer timer = Timer(command_timeout_ms); // we might wait for incomplete incoming publishes to complete |
icraggs | 23:05fc7de97d4a | 640 | int len = MQTTSerialize_disconnect(buf, MAX_MQTT_PACKET_SIZE); |
icraggs | 26:2658bb87c53d | 641 | if (len > 0) |
icraggs | 26:2658bb87c53d | 642 | rc = sendPacket(len, timer); // send the disconnect packet |
icraggs | 26:2658bb87c53d | 643 | |
icraggs | 23:05fc7de97d4a | 644 | return rc; |
icraggs | 20:cad3d54d7ecf | 645 | } |
icraggs | 20:cad3d54d7ecf | 646 | |
icraggs | 20:cad3d54d7ecf | 647 | |
icraggs | 20:cad3d54d7ecf | 648 | #endif |