Zoltan Hudak
/
MQTT_Hello
MQTT client to test the ENC28J60-EMAC on NUCLEO-F446RE.
MQTT/MQTTClient.h@0:238f0d0c0ba3, 2021-03-26 (annotated)
- Committer:
- hudakz
- Date:
- Fri Mar 26 16:15:14 2021 +0000
- Revision:
- 0:238f0d0c0ba3
MQTT client to test the ENC28J60-EMAC on NUCLEO-F446RE.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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hudakz | 0:238f0d0c0ba3 | 1 | /******************************************************************************* |
hudakz | 0:238f0d0c0ba3 | 2 | * Copyright (c) 2014, 2017 IBM Corp. |
hudakz | 0:238f0d0c0ba3 | 3 | * |
hudakz | 0:238f0d0c0ba3 | 4 | * All rights reserved. This program and the accompanying materials |
hudakz | 0:238f0d0c0ba3 | 5 | * are made available under the terms of the Eclipse Public License v1.0 |
hudakz | 0:238f0d0c0ba3 | 6 | * and Eclipse Distribution License v1.0 which accompany this distribution. |
hudakz | 0:238f0d0c0ba3 | 7 | * |
hudakz | 0:238f0d0c0ba3 | 8 | * The Eclipse Public License is available at |
hudakz | 0:238f0d0c0ba3 | 9 | * http://www.eclipse.org/legal/epl-v10.html |
hudakz | 0:238f0d0c0ba3 | 10 | * and the Eclipse Distribution License is available at |
hudakz | 0:238f0d0c0ba3 | 11 | * http://www.eclipse.org/org/documents/edl-v10.php. |
hudakz | 0:238f0d0c0ba3 | 12 | * |
hudakz | 0:238f0d0c0ba3 | 13 | * Contributors: |
hudakz | 0:238f0d0c0ba3 | 14 | * Ian Craggs - initial API and implementation and/or initial documentation |
hudakz | 0:238f0d0c0ba3 | 15 | * Ian Craggs - fix for bug 458512 - QoS 2 messages |
hudakz | 0:238f0d0c0ba3 | 16 | * Ian Craggs - fix for bug 460389 - send loop uses wrong length |
hudakz | 0:238f0d0c0ba3 | 17 | * Ian Craggs - fix for bug 464169 - clearing subscriptions |
hudakz | 0:238f0d0c0ba3 | 18 | * Ian Craggs - fix for bug 464551 - enums and ints can be different size |
hudakz | 0:238f0d0c0ba3 | 19 | * Mark Sonnentag - fix for bug 475204 - inefficient instantiation of Timer |
hudakz | 0:238f0d0c0ba3 | 20 | * Ian Craggs - fix for bug 475749 - packetid modified twice |
hudakz | 0:238f0d0c0ba3 | 21 | * Ian Craggs - add ability to set message handler separately #6 |
hudakz | 0:238f0d0c0ba3 | 22 | *******************************************************************************/ |
hudakz | 0:238f0d0c0ba3 | 23 | |
hudakz | 0:238f0d0c0ba3 | 24 | #if !defined(MQTTCLIENT_H) |
hudakz | 0:238f0d0c0ba3 | 25 | #define MQTTCLIENT_H |
hudakz | 0:238f0d0c0ba3 | 26 | |
hudakz | 0:238f0d0c0ba3 | 27 | #include "FP.h" |
hudakz | 0:238f0d0c0ba3 | 28 | #include "MQTTPacket.h" |
hudakz | 0:238f0d0c0ba3 | 29 | #include <stdio.h> |
hudakz | 0:238f0d0c0ba3 | 30 | #include "MQTTLogging.h" |
hudakz | 0:238f0d0c0ba3 | 31 | |
hudakz | 0:238f0d0c0ba3 | 32 | #if !defined(MQTTCLIENT_QOS1) |
hudakz | 0:238f0d0c0ba3 | 33 | #define MQTTCLIENT_QOS1 1 |
hudakz | 0:238f0d0c0ba3 | 34 | #endif |
hudakz | 0:238f0d0c0ba3 | 35 | #if !defined(MQTTCLIENT_QOS2) |
hudakz | 0:238f0d0c0ba3 | 36 | #define MQTTCLIENT_QOS2 0 |
hudakz | 0:238f0d0c0ba3 | 37 | #endif |
hudakz | 0:238f0d0c0ba3 | 38 | |
hudakz | 0:238f0d0c0ba3 | 39 | namespace MQTT |
hudakz | 0:238f0d0c0ba3 | 40 | { |
hudakz | 0:238f0d0c0ba3 | 41 | |
hudakz | 0:238f0d0c0ba3 | 42 | |
hudakz | 0:238f0d0c0ba3 | 43 | enum QoS { QOS0, QOS1, QOS2 }; |
hudakz | 0:238f0d0c0ba3 | 44 | |
hudakz | 0:238f0d0c0ba3 | 45 | // all failure return codes must be negative |
hudakz | 0:238f0d0c0ba3 | 46 | enum returnCode { BUFFER_OVERFLOW = -2, FAILURE = -1, SUCCESS = 0 }; |
hudakz | 0:238f0d0c0ba3 | 47 | |
hudakz | 0:238f0d0c0ba3 | 48 | |
hudakz | 0:238f0d0c0ba3 | 49 | struct Message |
hudakz | 0:238f0d0c0ba3 | 50 | { |
hudakz | 0:238f0d0c0ba3 | 51 | enum QoS qos; |
hudakz | 0:238f0d0c0ba3 | 52 | bool retained; |
hudakz | 0:238f0d0c0ba3 | 53 | bool dup; |
hudakz | 0:238f0d0c0ba3 | 54 | unsigned short id; |
hudakz | 0:238f0d0c0ba3 | 55 | void *payload; |
hudakz | 0:238f0d0c0ba3 | 56 | size_t payloadlen; |
hudakz | 0:238f0d0c0ba3 | 57 | }; |
hudakz | 0:238f0d0c0ba3 | 58 | |
hudakz | 0:238f0d0c0ba3 | 59 | |
hudakz | 0:238f0d0c0ba3 | 60 | struct MessageData |
hudakz | 0:238f0d0c0ba3 | 61 | { |
hudakz | 0:238f0d0c0ba3 | 62 | MessageData(MQTTString &aTopicName, struct Message &aMessage) : message(aMessage), topicName(aTopicName) |
hudakz | 0:238f0d0c0ba3 | 63 | { } |
hudakz | 0:238f0d0c0ba3 | 64 | |
hudakz | 0:238f0d0c0ba3 | 65 | struct Message &message; |
hudakz | 0:238f0d0c0ba3 | 66 | MQTTString &topicName; |
hudakz | 0:238f0d0c0ba3 | 67 | }; |
hudakz | 0:238f0d0c0ba3 | 68 | |
hudakz | 0:238f0d0c0ba3 | 69 | |
hudakz | 0:238f0d0c0ba3 | 70 | struct connackData |
hudakz | 0:238f0d0c0ba3 | 71 | { |
hudakz | 0:238f0d0c0ba3 | 72 | int rc; |
hudakz | 0:238f0d0c0ba3 | 73 | bool sessionPresent; |
hudakz | 0:238f0d0c0ba3 | 74 | }; |
hudakz | 0:238f0d0c0ba3 | 75 | |
hudakz | 0:238f0d0c0ba3 | 76 | |
hudakz | 0:238f0d0c0ba3 | 77 | struct subackData |
hudakz | 0:238f0d0c0ba3 | 78 | { |
hudakz | 0:238f0d0c0ba3 | 79 | int grantedQoS; |
hudakz | 0:238f0d0c0ba3 | 80 | }; |
hudakz | 0:238f0d0c0ba3 | 81 | |
hudakz | 0:238f0d0c0ba3 | 82 | |
hudakz | 0:238f0d0c0ba3 | 83 | class PacketId |
hudakz | 0:238f0d0c0ba3 | 84 | { |
hudakz | 0:238f0d0c0ba3 | 85 | public: |
hudakz | 0:238f0d0c0ba3 | 86 | PacketId() |
hudakz | 0:238f0d0c0ba3 | 87 | { |
hudakz | 0:238f0d0c0ba3 | 88 | next = 0; |
hudakz | 0:238f0d0c0ba3 | 89 | } |
hudakz | 0:238f0d0c0ba3 | 90 | |
hudakz | 0:238f0d0c0ba3 | 91 | int getNext() |
hudakz | 0:238f0d0c0ba3 | 92 | { |
hudakz | 0:238f0d0c0ba3 | 93 | return next = (next == MAX_PACKET_ID) ? 1 : next + 1; |
hudakz | 0:238f0d0c0ba3 | 94 | } |
hudakz | 0:238f0d0c0ba3 | 95 | |
hudakz | 0:238f0d0c0ba3 | 96 | private: |
hudakz | 0:238f0d0c0ba3 | 97 | static const int MAX_PACKET_ID = 65535; |
hudakz | 0:238f0d0c0ba3 | 98 | int next; |
hudakz | 0:238f0d0c0ba3 | 99 | }; |
hudakz | 0:238f0d0c0ba3 | 100 | |
hudakz | 0:238f0d0c0ba3 | 101 | |
hudakz | 0:238f0d0c0ba3 | 102 | /** |
hudakz | 0:238f0d0c0ba3 | 103 | * @class Client |
hudakz | 0:238f0d0c0ba3 | 104 | * @brief blocking, non-threaded MQTT client API |
hudakz | 0:238f0d0c0ba3 | 105 | * |
hudakz | 0:238f0d0c0ba3 | 106 | * This version of the API blocks on all method calls, until they are complete. This means that only one |
hudakz | 0:238f0d0c0ba3 | 107 | * MQTT request can be in process at any one time. |
hudakz | 0:238f0d0c0ba3 | 108 | * @param Network a network class which supports send, receive |
hudakz | 0:238f0d0c0ba3 | 109 | * @param Timer a timer class with the methods: |
hudakz | 0:238f0d0c0ba3 | 110 | */ |
hudakz | 0:238f0d0c0ba3 | 111 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE = 100, int MAX_MESSAGE_HANDLERS = 5> |
hudakz | 0:238f0d0c0ba3 | 112 | class Client |
hudakz | 0:238f0d0c0ba3 | 113 | { |
hudakz | 0:238f0d0c0ba3 | 114 | |
hudakz | 0:238f0d0c0ba3 | 115 | public: |
hudakz | 0:238f0d0c0ba3 | 116 | |
hudakz | 0:238f0d0c0ba3 | 117 | typedef void (*messageHandler)(MessageData&); |
hudakz | 0:238f0d0c0ba3 | 118 | |
hudakz | 0:238f0d0c0ba3 | 119 | /** Construct the client |
hudakz | 0:238f0d0c0ba3 | 120 | * @param network - pointer to an instance of the Network class - must be connected to the endpoint |
hudakz | 0:238f0d0c0ba3 | 121 | * before calling MQTT connect |
hudakz | 0:238f0d0c0ba3 | 122 | * @param limits an instance of the Limit class - to alter limits as required |
hudakz | 0:238f0d0c0ba3 | 123 | */ |
hudakz | 0:238f0d0c0ba3 | 124 | Client(Network& network, unsigned int command_timeout_ms = 30000); |
hudakz | 0:238f0d0c0ba3 | 125 | |
hudakz | 0:238f0d0c0ba3 | 126 | /** Set the default message handling callback - used for any message which does not match a subscription message handler |
hudakz | 0:238f0d0c0ba3 | 127 | * @param mh - pointer to the callback function. Set to 0 to remove. |
hudakz | 0:238f0d0c0ba3 | 128 | */ |
hudakz | 0:238f0d0c0ba3 | 129 | void setDefaultMessageHandler(messageHandler mh) |
hudakz | 0:238f0d0c0ba3 | 130 | { |
hudakz | 0:238f0d0c0ba3 | 131 | if (mh != 0) |
hudakz | 0:238f0d0c0ba3 | 132 | defaultMessageHandler.attach(mh); |
hudakz | 0:238f0d0c0ba3 | 133 | else |
hudakz | 0:238f0d0c0ba3 | 134 | defaultMessageHandler.detach(); |
hudakz | 0:238f0d0c0ba3 | 135 | } |
hudakz | 0:238f0d0c0ba3 | 136 | |
hudakz | 0:238f0d0c0ba3 | 137 | /** Set a message handling callback. This can be used outside of the the subscribe method. |
hudakz | 0:238f0d0c0ba3 | 138 | * @param topicFilter - a topic pattern which can include wildcards |
hudakz | 0:238f0d0c0ba3 | 139 | * @param mh - pointer to the callback function. If 0, removes the callback if any |
hudakz | 0:238f0d0c0ba3 | 140 | */ |
hudakz | 0:238f0d0c0ba3 | 141 | int setMessageHandler(const char* topicFilter, messageHandler mh); |
hudakz | 0:238f0d0c0ba3 | 142 | |
hudakz | 0:238f0d0c0ba3 | 143 | /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack |
hudakz | 0:238f0d0c0ba3 | 144 | * The nework object must be connected to the network endpoint before calling this |
hudakz | 0:238f0d0c0ba3 | 145 | * Default connect options are used |
hudakz | 0:238f0d0c0ba3 | 146 | * @return success code - |
hudakz | 0:238f0d0c0ba3 | 147 | */ |
hudakz | 0:238f0d0c0ba3 | 148 | int connect(); |
hudakz | 0:238f0d0c0ba3 | 149 | |
hudakz | 0:238f0d0c0ba3 | 150 | /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack |
hudakz | 0:238f0d0c0ba3 | 151 | * The nework object must be connected to the network endpoint before calling this |
hudakz | 0:238f0d0c0ba3 | 152 | * @param options - connect options |
hudakz | 0:238f0d0c0ba3 | 153 | * @return success code - |
hudakz | 0:238f0d0c0ba3 | 154 | */ |
hudakz | 0:238f0d0c0ba3 | 155 | int connect(MQTTPacket_connectData& options); |
hudakz | 0:238f0d0c0ba3 | 156 | |
hudakz | 0:238f0d0c0ba3 | 157 | /** MQTT Connect - send an MQTT connect packet down the network and wait for a Connack |
hudakz | 0:238f0d0c0ba3 | 158 | * The nework object must be connected to the network endpoint before calling this |
hudakz | 0:238f0d0c0ba3 | 159 | * @param options - connect options |
hudakz | 0:238f0d0c0ba3 | 160 | * @param connackData - connack data to be returned |
hudakz | 0:238f0d0c0ba3 | 161 | * @return success code - |
hudakz | 0:238f0d0c0ba3 | 162 | */ |
hudakz | 0:238f0d0c0ba3 | 163 | int connect(MQTTPacket_connectData& options, connackData& data); |
hudakz | 0:238f0d0c0ba3 | 164 | |
hudakz | 0:238f0d0c0ba3 | 165 | /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs |
hudakz | 0:238f0d0c0ba3 | 166 | * @param topic - the topic to publish to |
hudakz | 0:238f0d0c0ba3 | 167 | * @param message - the message to send |
hudakz | 0:238f0d0c0ba3 | 168 | * @return success code - |
hudakz | 0:238f0d0c0ba3 | 169 | */ |
hudakz | 0:238f0d0c0ba3 | 170 | int publish(const char* topicName, Message& message); |
hudakz | 0:238f0d0c0ba3 | 171 | |
hudakz | 0:238f0d0c0ba3 | 172 | /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs |
hudakz | 0:238f0d0c0ba3 | 173 | * @param topic - the topic to publish to |
hudakz | 0:238f0d0c0ba3 | 174 | * @param payload - the data to send |
hudakz | 0:238f0d0c0ba3 | 175 | * @param payloadlen - the length of the data |
hudakz | 0:238f0d0c0ba3 | 176 | * @param qos - the QoS to send the publish at |
hudakz | 0:238f0d0c0ba3 | 177 | * @param retained - whether the message should be retained |
hudakz | 0:238f0d0c0ba3 | 178 | * @return success code - |
hudakz | 0:238f0d0c0ba3 | 179 | */ |
hudakz | 0:238f0d0c0ba3 | 180 | int publish(const char* topicName, void* payload, size_t payloadlen, enum QoS qos = QOS0, bool retained = false); |
hudakz | 0:238f0d0c0ba3 | 181 | |
hudakz | 0:238f0d0c0ba3 | 182 | /** MQTT Publish - send an MQTT publish packet and wait for all acks to complete for all QoSs |
hudakz | 0:238f0d0c0ba3 | 183 | * @param topic - the topic to publish to |
hudakz | 0:238f0d0c0ba3 | 184 | * @param payload - the data to send |
hudakz | 0:238f0d0c0ba3 | 185 | * @param payloadlen - the length of the data |
hudakz | 0:238f0d0c0ba3 | 186 | * @param id - the packet id used - returned |
hudakz | 0:238f0d0c0ba3 | 187 | * @param qos - the QoS to send the publish at |
hudakz | 0:238f0d0c0ba3 | 188 | * @param retained - whether the message should be retained |
hudakz | 0:238f0d0c0ba3 | 189 | * @return success code - |
hudakz | 0:238f0d0c0ba3 | 190 | */ |
hudakz | 0:238f0d0c0ba3 | 191 | int publish(const char* topicName, void* payload, size_t payloadlen, unsigned short& id, enum QoS qos = QOS1, bool retained = false); |
hudakz | 0:238f0d0c0ba3 | 192 | |
hudakz | 0:238f0d0c0ba3 | 193 | /** MQTT Subscribe - send an MQTT subscribe packet and wait for the suback |
hudakz | 0:238f0d0c0ba3 | 194 | * @param topicFilter - a topic pattern which can include wildcards |
hudakz | 0:238f0d0c0ba3 | 195 | * @param qos - the MQTT QoS to subscribe at |
hudakz | 0:238f0d0c0ba3 | 196 | * @param mh - the callback function to be invoked when a message is received for this subscription |
hudakz | 0:238f0d0c0ba3 | 197 | * @return success code - |
hudakz | 0:238f0d0c0ba3 | 198 | */ |
hudakz | 0:238f0d0c0ba3 | 199 | int subscribe(const char* topicFilter, enum QoS qos, messageHandler mh); |
hudakz | 0:238f0d0c0ba3 | 200 | |
hudakz | 0:238f0d0c0ba3 | 201 | /** MQTT Subscribe - send an MQTT subscribe packet and wait for the suback |
hudakz | 0:238f0d0c0ba3 | 202 | * @param topicFilter - a topic pattern which can include wildcards |
hudakz | 0:238f0d0c0ba3 | 203 | * @param qos - the MQTT QoS to subscribe at© |
hudakz | 0:238f0d0c0ba3 | 204 | * @param mh - the callback function to be invoked when a message is received for this subscription |
hudakz | 0:238f0d0c0ba3 | 205 | * @param |
hudakz | 0:238f0d0c0ba3 | 206 | * @return success code - |
hudakz | 0:238f0d0c0ba3 | 207 | */ |
hudakz | 0:238f0d0c0ba3 | 208 | int subscribe(const char* topicFilter, enum QoS qos, messageHandler mh, subackData &data); |
hudakz | 0:238f0d0c0ba3 | 209 | |
hudakz | 0:238f0d0c0ba3 | 210 | /** MQTT Unsubscribe - send an MQTT unsubscribe packet and wait for the unsuback |
hudakz | 0:238f0d0c0ba3 | 211 | * @param topicFilter - a topic pattern which can include wildcards |
hudakz | 0:238f0d0c0ba3 | 212 | * @return success code - |
hudakz | 0:238f0d0c0ba3 | 213 | */ |
hudakz | 0:238f0d0c0ba3 | 214 | int unsubscribe(const char* topicFilter); |
hudakz | 0:238f0d0c0ba3 | 215 | |
hudakz | 0:238f0d0c0ba3 | 216 | /** MQTT Disconnect - send an MQTT disconnect packet, and clean up any state |
hudakz | 0:238f0d0c0ba3 | 217 | * @return success code - |
hudakz | 0:238f0d0c0ba3 | 218 | */ |
hudakz | 0:238f0d0c0ba3 | 219 | int disconnect(); |
hudakz | 0:238f0d0c0ba3 | 220 | |
hudakz | 0:238f0d0c0ba3 | 221 | /** A call to this API must be made within the keepAlive interval to keep the MQTT connection alive |
hudakz | 0:238f0d0c0ba3 | 222 | * yield can be called if no other MQTT operation is needed. This will also allow messages to be |
hudakz | 0:238f0d0c0ba3 | 223 | * received. |
hudakz | 0:238f0d0c0ba3 | 224 | * @param timeout_ms the time to wait, in milliseconds |
hudakz | 0:238f0d0c0ba3 | 225 | * @return success code - on failure, this means the client has disconnected |
hudakz | 0:238f0d0c0ba3 | 226 | */ |
hudakz | 0:238f0d0c0ba3 | 227 | int yield(unsigned long timeout_ms = 1000L); |
hudakz | 0:238f0d0c0ba3 | 228 | |
hudakz | 0:238f0d0c0ba3 | 229 | /** Is the client connected? |
hudakz | 0:238f0d0c0ba3 | 230 | * @return flag - is the client connected or not? |
hudakz | 0:238f0d0c0ba3 | 231 | */ |
hudakz | 0:238f0d0c0ba3 | 232 | bool isConnected() |
hudakz | 0:238f0d0c0ba3 | 233 | { |
hudakz | 0:238f0d0c0ba3 | 234 | return isconnected; |
hudakz | 0:238f0d0c0ba3 | 235 | } |
hudakz | 0:238f0d0c0ba3 | 236 | |
hudakz | 0:238f0d0c0ba3 | 237 | private: |
hudakz | 0:238f0d0c0ba3 | 238 | |
hudakz | 0:238f0d0c0ba3 | 239 | void closeSession(); |
hudakz | 0:238f0d0c0ba3 | 240 | void cleanSession(); |
hudakz | 0:238f0d0c0ba3 | 241 | int cycle(Timer& timer); |
hudakz | 0:238f0d0c0ba3 | 242 | int waitfor(int packet_type, Timer& timer); |
hudakz | 0:238f0d0c0ba3 | 243 | int keepalive(); |
hudakz | 0:238f0d0c0ba3 | 244 | int publish(int len, Timer& timer, enum QoS qos); |
hudakz | 0:238f0d0c0ba3 | 245 | |
hudakz | 0:238f0d0c0ba3 | 246 | int decodePacket(int* value, int timeout); |
hudakz | 0:238f0d0c0ba3 | 247 | int readPacket(Timer& timer); |
hudakz | 0:238f0d0c0ba3 | 248 | int sendPacket(int length, Timer& timer); |
hudakz | 0:238f0d0c0ba3 | 249 | int deliverMessage(MQTTString& topicName, Message& message); |
hudakz | 0:238f0d0c0ba3 | 250 | bool isTopicMatched(char* topicFilter, MQTTString& topicName); |
hudakz | 0:238f0d0c0ba3 | 251 | |
hudakz | 0:238f0d0c0ba3 | 252 | Network& ipstack; |
hudakz | 0:238f0d0c0ba3 | 253 | unsigned long command_timeout_ms; |
hudakz | 0:238f0d0c0ba3 | 254 | |
hudakz | 0:238f0d0c0ba3 | 255 | unsigned char sendbuf[MAX_MQTT_PACKET_SIZE]; |
hudakz | 0:238f0d0c0ba3 | 256 | unsigned char readbuf[MAX_MQTT_PACKET_SIZE]; |
hudakz | 0:238f0d0c0ba3 | 257 | |
hudakz | 0:238f0d0c0ba3 | 258 | Timer last_sent, last_received; |
hudakz | 0:238f0d0c0ba3 | 259 | unsigned int keepAliveInterval; |
hudakz | 0:238f0d0c0ba3 | 260 | bool ping_outstanding; |
hudakz | 0:238f0d0c0ba3 | 261 | bool cleansession; |
hudakz | 0:238f0d0c0ba3 | 262 | |
hudakz | 0:238f0d0c0ba3 | 263 | PacketId packetid; |
hudakz | 0:238f0d0c0ba3 | 264 | |
hudakz | 0:238f0d0c0ba3 | 265 | struct MessageHandlers |
hudakz | 0:238f0d0c0ba3 | 266 | { |
hudakz | 0:238f0d0c0ba3 | 267 | const char* topicFilter; |
hudakz | 0:238f0d0c0ba3 | 268 | FP<void, MessageData&> fp; |
hudakz | 0:238f0d0c0ba3 | 269 | } messageHandlers[MAX_MESSAGE_HANDLERS]; // Message handlers are indexed by subscription topic |
hudakz | 0:238f0d0c0ba3 | 270 | |
hudakz | 0:238f0d0c0ba3 | 271 | FP<void, MessageData&> defaultMessageHandler; |
hudakz | 0:238f0d0c0ba3 | 272 | |
hudakz | 0:238f0d0c0ba3 | 273 | bool isconnected; |
hudakz | 0:238f0d0c0ba3 | 274 | |
hudakz | 0:238f0d0c0ba3 | 275 | #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 276 | unsigned char pubbuf[MAX_MQTT_PACKET_SIZE]; // store the last publish for sending on reconnect |
hudakz | 0:238f0d0c0ba3 | 277 | int inflightLen; |
hudakz | 0:238f0d0c0ba3 | 278 | unsigned short inflightMsgid; |
hudakz | 0:238f0d0c0ba3 | 279 | enum QoS inflightQoS; |
hudakz | 0:238f0d0c0ba3 | 280 | #endif |
hudakz | 0:238f0d0c0ba3 | 281 | |
hudakz | 0:238f0d0c0ba3 | 282 | #if MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 283 | bool pubrel; |
hudakz | 0:238f0d0c0ba3 | 284 | #if !defined(MAX_INCOMING_QOS2_MESSAGES) |
hudakz | 0:238f0d0c0ba3 | 285 | #define MAX_INCOMING_QOS2_MESSAGES 10 |
hudakz | 0:238f0d0c0ba3 | 286 | #endif |
hudakz | 0:238f0d0c0ba3 | 287 | unsigned short incomingQoS2messages[MAX_INCOMING_QOS2_MESSAGES]; |
hudakz | 0:238f0d0c0ba3 | 288 | bool isQoS2msgidFree(unsigned short id); |
hudakz | 0:238f0d0c0ba3 | 289 | bool useQoS2msgid(unsigned short id); |
hudakz | 0:238f0d0c0ba3 | 290 | void freeQoS2msgid(unsigned short id); |
hudakz | 0:238f0d0c0ba3 | 291 | #endif |
hudakz | 0:238f0d0c0ba3 | 292 | |
hudakz | 0:238f0d0c0ba3 | 293 | }; |
hudakz | 0:238f0d0c0ba3 | 294 | |
hudakz | 0:238f0d0c0ba3 | 295 | } |
hudakz | 0:238f0d0c0ba3 | 296 | |
hudakz | 0:238f0d0c0ba3 | 297 | |
hudakz | 0:238f0d0c0ba3 | 298 | template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS> |
hudakz | 0:238f0d0c0ba3 | 299 | void MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::cleanSession() |
hudakz | 0:238f0d0c0ba3 | 300 | { |
hudakz | 0:238f0d0c0ba3 | 301 | for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i) |
hudakz | 0:238f0d0c0ba3 | 302 | messageHandlers[i].topicFilter = 0; |
hudakz | 0:238f0d0c0ba3 | 303 | |
hudakz | 0:238f0d0c0ba3 | 304 | #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 305 | inflightMsgid = 0; |
hudakz | 0:238f0d0c0ba3 | 306 | inflightQoS = QOS0; |
hudakz | 0:238f0d0c0ba3 | 307 | #endif |
hudakz | 0:238f0d0c0ba3 | 308 | |
hudakz | 0:238f0d0c0ba3 | 309 | #if MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 310 | pubrel = false; |
hudakz | 0:238f0d0c0ba3 | 311 | for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i) |
hudakz | 0:238f0d0c0ba3 | 312 | incomingQoS2messages[i] = 0; |
hudakz | 0:238f0d0c0ba3 | 313 | #endif |
hudakz | 0:238f0d0c0ba3 | 314 | } |
hudakz | 0:238f0d0c0ba3 | 315 | |
hudakz | 0:238f0d0c0ba3 | 316 | |
hudakz | 0:238f0d0c0ba3 | 317 | template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS> |
hudakz | 0:238f0d0c0ba3 | 318 | void MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::closeSession() |
hudakz | 0:238f0d0c0ba3 | 319 | { |
hudakz | 0:238f0d0c0ba3 | 320 | ping_outstanding = false; |
hudakz | 0:238f0d0c0ba3 | 321 | isconnected = false; |
hudakz | 0:238f0d0c0ba3 | 322 | if (cleansession) |
hudakz | 0:238f0d0c0ba3 | 323 | cleanSession(); |
hudakz | 0:238f0d0c0ba3 | 324 | } |
hudakz | 0:238f0d0c0ba3 | 325 | |
hudakz | 0:238f0d0c0ba3 | 326 | |
hudakz | 0:238f0d0c0ba3 | 327 | template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS> |
hudakz | 0:238f0d0c0ba3 | 328 | MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::Client(Network& network, unsigned int command_timeout_ms) : ipstack(network), packetid() |
hudakz | 0:238f0d0c0ba3 | 329 | { |
hudakz | 0:238f0d0c0ba3 | 330 | this->command_timeout_ms = command_timeout_ms; |
hudakz | 0:238f0d0c0ba3 | 331 | cleansession = true; |
hudakz | 0:238f0d0c0ba3 | 332 | closeSession(); |
hudakz | 0:238f0d0c0ba3 | 333 | } |
hudakz | 0:238f0d0c0ba3 | 334 | |
hudakz | 0:238f0d0c0ba3 | 335 | |
hudakz | 0:238f0d0c0ba3 | 336 | #if MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 337 | template<class Network, class Timer, int a, int b> |
hudakz | 0:238f0d0c0ba3 | 338 | bool MQTT::Client<Network, Timer, a, b>::isQoS2msgidFree(unsigned short id) |
hudakz | 0:238f0d0c0ba3 | 339 | { |
hudakz | 0:238f0d0c0ba3 | 340 | for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i) |
hudakz | 0:238f0d0c0ba3 | 341 | { |
hudakz | 0:238f0d0c0ba3 | 342 | if (incomingQoS2messages[i] == id) |
hudakz | 0:238f0d0c0ba3 | 343 | return false; |
hudakz | 0:238f0d0c0ba3 | 344 | } |
hudakz | 0:238f0d0c0ba3 | 345 | return true; |
hudakz | 0:238f0d0c0ba3 | 346 | } |
hudakz | 0:238f0d0c0ba3 | 347 | |
hudakz | 0:238f0d0c0ba3 | 348 | |
hudakz | 0:238f0d0c0ba3 | 349 | template<class Network, class Timer, int a, int b> |
hudakz | 0:238f0d0c0ba3 | 350 | bool MQTT::Client<Network, Timer, a, b>::useQoS2msgid(unsigned short id) |
hudakz | 0:238f0d0c0ba3 | 351 | { |
hudakz | 0:238f0d0c0ba3 | 352 | for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i) |
hudakz | 0:238f0d0c0ba3 | 353 | { |
hudakz | 0:238f0d0c0ba3 | 354 | if (incomingQoS2messages[i] == 0) |
hudakz | 0:238f0d0c0ba3 | 355 | { |
hudakz | 0:238f0d0c0ba3 | 356 | incomingQoS2messages[i] = id; |
hudakz | 0:238f0d0c0ba3 | 357 | return true; |
hudakz | 0:238f0d0c0ba3 | 358 | } |
hudakz | 0:238f0d0c0ba3 | 359 | } |
hudakz | 0:238f0d0c0ba3 | 360 | return false; |
hudakz | 0:238f0d0c0ba3 | 361 | } |
hudakz | 0:238f0d0c0ba3 | 362 | |
hudakz | 0:238f0d0c0ba3 | 363 | |
hudakz | 0:238f0d0c0ba3 | 364 | template<class Network, class Timer, int a, int b> |
hudakz | 0:238f0d0c0ba3 | 365 | void MQTT::Client<Network, Timer, a, b>::freeQoS2msgid(unsigned short id) |
hudakz | 0:238f0d0c0ba3 | 366 | { |
hudakz | 0:238f0d0c0ba3 | 367 | for (int i = 0; i < MAX_INCOMING_QOS2_MESSAGES; ++i) |
hudakz | 0:238f0d0c0ba3 | 368 | { |
hudakz | 0:238f0d0c0ba3 | 369 | if (incomingQoS2messages[i] == id) |
hudakz | 0:238f0d0c0ba3 | 370 | { |
hudakz | 0:238f0d0c0ba3 | 371 | incomingQoS2messages[i] = 0; |
hudakz | 0:238f0d0c0ba3 | 372 | return; |
hudakz | 0:238f0d0c0ba3 | 373 | } |
hudakz | 0:238f0d0c0ba3 | 374 | } |
hudakz | 0:238f0d0c0ba3 | 375 | } |
hudakz | 0:238f0d0c0ba3 | 376 | #endif |
hudakz | 0:238f0d0c0ba3 | 377 | |
hudakz | 0:238f0d0c0ba3 | 378 | |
hudakz | 0:238f0d0c0ba3 | 379 | template<class Network, class Timer, int a, int b> |
hudakz | 0:238f0d0c0ba3 | 380 | int MQTT::Client<Network, Timer, a, b>::sendPacket(int length, Timer& timer) |
hudakz | 0:238f0d0c0ba3 | 381 | { |
hudakz | 0:238f0d0c0ba3 | 382 | int rc = FAILURE, |
hudakz | 0:238f0d0c0ba3 | 383 | sent = 0; |
hudakz | 0:238f0d0c0ba3 | 384 | |
hudakz | 0:238f0d0c0ba3 | 385 | while (sent < length) |
hudakz | 0:238f0d0c0ba3 | 386 | { |
hudakz | 0:238f0d0c0ba3 | 387 | rc = ipstack.write(&sendbuf[sent], length - sent, timer.left_ms()); |
hudakz | 0:238f0d0c0ba3 | 388 | if (rc < 0) // there was an error writing the data |
hudakz | 0:238f0d0c0ba3 | 389 | break; |
hudakz | 0:238f0d0c0ba3 | 390 | sent += rc; |
hudakz | 0:238f0d0c0ba3 | 391 | if (timer.expired()) // only check expiry after at least one attempt to write |
hudakz | 0:238f0d0c0ba3 | 392 | break; |
hudakz | 0:238f0d0c0ba3 | 393 | } |
hudakz | 0:238f0d0c0ba3 | 394 | if (sent == length) |
hudakz | 0:238f0d0c0ba3 | 395 | { |
hudakz | 0:238f0d0c0ba3 | 396 | if (this->keepAliveInterval > 0) |
hudakz | 0:238f0d0c0ba3 | 397 | last_sent.countdown(this->keepAliveInterval); // record the fact that we have successfully sent the packet |
hudakz | 0:238f0d0c0ba3 | 398 | rc = SUCCESS; |
hudakz | 0:238f0d0c0ba3 | 399 | } |
hudakz | 0:238f0d0c0ba3 | 400 | else |
hudakz | 0:238f0d0c0ba3 | 401 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 402 | |
hudakz | 0:238f0d0c0ba3 | 403 | #if defined(MQTT_DEBUG) |
hudakz | 0:238f0d0c0ba3 | 404 | char printbuf[150]; |
hudakz | 0:238f0d0c0ba3 | 405 | DEBUG("Rc %d from sending packet %s\r\n", rc, |
hudakz | 0:238f0d0c0ba3 | 406 | MQTTFormat_toServerString(printbuf, sizeof(printbuf), sendbuf, length)); |
hudakz | 0:238f0d0c0ba3 | 407 | #endif |
hudakz | 0:238f0d0c0ba3 | 408 | return rc; |
hudakz | 0:238f0d0c0ba3 | 409 | } |
hudakz | 0:238f0d0c0ba3 | 410 | |
hudakz | 0:238f0d0c0ba3 | 411 | |
hudakz | 0:238f0d0c0ba3 | 412 | template<class Network, class Timer, int a, int b> |
hudakz | 0:238f0d0c0ba3 | 413 | int MQTT::Client<Network, Timer, a, b>::decodePacket(int* value, int timeout) |
hudakz | 0:238f0d0c0ba3 | 414 | { |
hudakz | 0:238f0d0c0ba3 | 415 | unsigned char c; |
hudakz | 0:238f0d0c0ba3 | 416 | int multiplier = 1; |
hudakz | 0:238f0d0c0ba3 | 417 | int len = 0; |
hudakz | 0:238f0d0c0ba3 | 418 | const int MAX_NO_OF_REMAINING_LENGTH_BYTES = 4; |
hudakz | 0:238f0d0c0ba3 | 419 | |
hudakz | 0:238f0d0c0ba3 | 420 | *value = 0; |
hudakz | 0:238f0d0c0ba3 | 421 | do |
hudakz | 0:238f0d0c0ba3 | 422 | { |
hudakz | 0:238f0d0c0ba3 | 423 | int rc = MQTTPACKET_READ_ERROR; |
hudakz | 0:238f0d0c0ba3 | 424 | |
hudakz | 0:238f0d0c0ba3 | 425 | if (++len > MAX_NO_OF_REMAINING_LENGTH_BYTES) |
hudakz | 0:238f0d0c0ba3 | 426 | { |
hudakz | 0:238f0d0c0ba3 | 427 | rc = MQTTPACKET_READ_ERROR; /* bad data */ |
hudakz | 0:238f0d0c0ba3 | 428 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 429 | } |
hudakz | 0:238f0d0c0ba3 | 430 | rc = ipstack.read(&c, 1, timeout); |
hudakz | 0:238f0d0c0ba3 | 431 | if (rc != 1) |
hudakz | 0:238f0d0c0ba3 | 432 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 433 | *value += (c & 127) * multiplier; |
hudakz | 0:238f0d0c0ba3 | 434 | multiplier *= 128; |
hudakz | 0:238f0d0c0ba3 | 435 | } while ((c & 128) != 0); |
hudakz | 0:238f0d0c0ba3 | 436 | exit: |
hudakz | 0:238f0d0c0ba3 | 437 | return len; |
hudakz | 0:238f0d0c0ba3 | 438 | } |
hudakz | 0:238f0d0c0ba3 | 439 | |
hudakz | 0:238f0d0c0ba3 | 440 | |
hudakz | 0:238f0d0c0ba3 | 441 | /** |
hudakz | 0:238f0d0c0ba3 | 442 | * If any read fails in this method, then we should disconnect from the network, as on reconnect |
hudakz | 0:238f0d0c0ba3 | 443 | * the packets can be retried. |
hudakz | 0:238f0d0c0ba3 | 444 | * @param timeout the max time to wait for the packet read to complete, in milliseconds |
hudakz | 0:238f0d0c0ba3 | 445 | * @return the MQTT packet type, 0 if none, -1 if error |
hudakz | 0:238f0d0c0ba3 | 446 | */ |
hudakz | 0:238f0d0c0ba3 | 447 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 448 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::readPacket(Timer& timer) |
hudakz | 0:238f0d0c0ba3 | 449 | { |
hudakz | 0:238f0d0c0ba3 | 450 | int rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 451 | MQTTHeader header = {0}; |
hudakz | 0:238f0d0c0ba3 | 452 | int len = 0; |
hudakz | 0:238f0d0c0ba3 | 453 | int rem_len = 0; |
hudakz | 0:238f0d0c0ba3 | 454 | |
hudakz | 0:238f0d0c0ba3 | 455 | /* 1. read the header byte. This has the packet type in it */ |
hudakz | 0:238f0d0c0ba3 | 456 | rc = ipstack.read(readbuf, 1, timer.left_ms()); |
hudakz | 0:238f0d0c0ba3 | 457 | if (rc != 1) |
hudakz | 0:238f0d0c0ba3 | 458 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 459 | |
hudakz | 0:238f0d0c0ba3 | 460 | len = 1; |
hudakz | 0:238f0d0c0ba3 | 461 | /* 2. read the remaining length. This is variable in itself */ |
hudakz | 0:238f0d0c0ba3 | 462 | decodePacket(&rem_len, timer.left_ms()); |
hudakz | 0:238f0d0c0ba3 | 463 | len += MQTTPacket_encode(readbuf + 1, rem_len); /* put the original remaining length into the buffer */ |
hudakz | 0:238f0d0c0ba3 | 464 | |
hudakz | 0:238f0d0c0ba3 | 465 | if (rem_len > (MAX_MQTT_PACKET_SIZE - len)) |
hudakz | 0:238f0d0c0ba3 | 466 | { |
hudakz | 0:238f0d0c0ba3 | 467 | rc = BUFFER_OVERFLOW; |
hudakz | 0:238f0d0c0ba3 | 468 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 469 | } |
hudakz | 0:238f0d0c0ba3 | 470 | |
hudakz | 0:238f0d0c0ba3 | 471 | /* 3. read the rest of the buffer using a callback to supply the rest of the data */ |
hudakz | 0:238f0d0c0ba3 | 472 | if (rem_len > 0 && (ipstack.read(readbuf + len, rem_len, timer.left_ms()) != rem_len)) |
hudakz | 0:238f0d0c0ba3 | 473 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 474 | |
hudakz | 0:238f0d0c0ba3 | 475 | header.byte = readbuf[0]; |
hudakz | 0:238f0d0c0ba3 | 476 | rc = header.bits.type; |
hudakz | 0:238f0d0c0ba3 | 477 | if (this->keepAliveInterval > 0) |
hudakz | 0:238f0d0c0ba3 | 478 | last_received.countdown(this->keepAliveInterval); // record the fact that we have successfully received a packet |
hudakz | 0:238f0d0c0ba3 | 479 | exit: |
hudakz | 0:238f0d0c0ba3 | 480 | |
hudakz | 0:238f0d0c0ba3 | 481 | #if defined(MQTT_DEBUG) |
hudakz | 0:238f0d0c0ba3 | 482 | if (rc >= 0) |
hudakz | 0:238f0d0c0ba3 | 483 | { |
hudakz | 0:238f0d0c0ba3 | 484 | char printbuf[50]; |
hudakz | 0:238f0d0c0ba3 | 485 | DEBUG("Rc %d receiving packet %s\r\n", rc, |
hudakz | 0:238f0d0c0ba3 | 486 | MQTTFormat_toClientString(printbuf, sizeof(printbuf), readbuf, len)); |
hudakz | 0:238f0d0c0ba3 | 487 | } |
hudakz | 0:238f0d0c0ba3 | 488 | #endif |
hudakz | 0:238f0d0c0ba3 | 489 | return rc; |
hudakz | 0:238f0d0c0ba3 | 490 | } |
hudakz | 0:238f0d0c0ba3 | 491 | |
hudakz | 0:238f0d0c0ba3 | 492 | |
hudakz | 0:238f0d0c0ba3 | 493 | // assume topic filter and name is in correct format |
hudakz | 0:238f0d0c0ba3 | 494 | // # can only be at end |
hudakz | 0:238f0d0c0ba3 | 495 | // + and # can only be next to separator |
hudakz | 0:238f0d0c0ba3 | 496 | template<class Network, class Timer, int a, int b> |
hudakz | 0:238f0d0c0ba3 | 497 | bool MQTT::Client<Network, Timer, a, b>::isTopicMatched(char* topicFilter, MQTTString& topicName) |
hudakz | 0:238f0d0c0ba3 | 498 | { |
hudakz | 0:238f0d0c0ba3 | 499 | char* curf = topicFilter; |
hudakz | 0:238f0d0c0ba3 | 500 | char* curn = topicName.lenstring.data; |
hudakz | 0:238f0d0c0ba3 | 501 | char* curn_end = curn + topicName.lenstring.len; |
hudakz | 0:238f0d0c0ba3 | 502 | |
hudakz | 0:238f0d0c0ba3 | 503 | while (*curf && curn < curn_end) |
hudakz | 0:238f0d0c0ba3 | 504 | { |
hudakz | 0:238f0d0c0ba3 | 505 | if (*curn == '/' && *curf != '/') |
hudakz | 0:238f0d0c0ba3 | 506 | break; |
hudakz | 0:238f0d0c0ba3 | 507 | if (*curf != '+' && *curf != '#' && *curf != *curn) |
hudakz | 0:238f0d0c0ba3 | 508 | break; |
hudakz | 0:238f0d0c0ba3 | 509 | if (*curf == '+') |
hudakz | 0:238f0d0c0ba3 | 510 | { // skip until we meet the next separator, or end of string |
hudakz | 0:238f0d0c0ba3 | 511 | char* nextpos = curn + 1; |
hudakz | 0:238f0d0c0ba3 | 512 | while (nextpos < curn_end && *nextpos != '/') |
hudakz | 0:238f0d0c0ba3 | 513 | nextpos = ++curn + 1; |
hudakz | 0:238f0d0c0ba3 | 514 | } |
hudakz | 0:238f0d0c0ba3 | 515 | else if (*curf == '#') |
hudakz | 0:238f0d0c0ba3 | 516 | curn = curn_end - 1; // skip until end of string |
hudakz | 0:238f0d0c0ba3 | 517 | curf++; |
hudakz | 0:238f0d0c0ba3 | 518 | curn++; |
hudakz | 0:238f0d0c0ba3 | 519 | }; |
hudakz | 0:238f0d0c0ba3 | 520 | |
hudakz | 0:238f0d0c0ba3 | 521 | return (curn == curn_end) && (*curf == '\0'); |
hudakz | 0:238f0d0c0ba3 | 522 | } |
hudakz | 0:238f0d0c0ba3 | 523 | |
hudakz | 0:238f0d0c0ba3 | 524 | |
hudakz | 0:238f0d0c0ba3 | 525 | |
hudakz | 0:238f0d0c0ba3 | 526 | template<class Network, class Timer, int a, int MAX_MESSAGE_HANDLERS> |
hudakz | 0:238f0d0c0ba3 | 527 | int MQTT::Client<Network, Timer, a, MAX_MESSAGE_HANDLERS>::deliverMessage(MQTTString& topicName, Message& message) |
hudakz | 0:238f0d0c0ba3 | 528 | { |
hudakz | 0:238f0d0c0ba3 | 529 | int rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 530 | |
hudakz | 0:238f0d0c0ba3 | 531 | // we have to find the right message handler - indexed by topic |
hudakz | 0:238f0d0c0ba3 | 532 | for (int i = 0; i < MAX_MESSAGE_HANDLERS; ++i) |
hudakz | 0:238f0d0c0ba3 | 533 | { |
hudakz | 0:238f0d0c0ba3 | 534 | if (messageHandlers[i].topicFilter != 0 && (MQTTPacket_equals(&topicName, (char*)messageHandlers[i].topicFilter) || |
hudakz | 0:238f0d0c0ba3 | 535 | isTopicMatched((char*)messageHandlers[i].topicFilter, topicName))) |
hudakz | 0:238f0d0c0ba3 | 536 | { |
hudakz | 0:238f0d0c0ba3 | 537 | if (messageHandlers[i].fp.attached()) |
hudakz | 0:238f0d0c0ba3 | 538 | { |
hudakz | 0:238f0d0c0ba3 | 539 | MessageData md(topicName, message); |
hudakz | 0:238f0d0c0ba3 | 540 | messageHandlers[i].fp(md); |
hudakz | 0:238f0d0c0ba3 | 541 | rc = SUCCESS; |
hudakz | 0:238f0d0c0ba3 | 542 | } |
hudakz | 0:238f0d0c0ba3 | 543 | } |
hudakz | 0:238f0d0c0ba3 | 544 | } |
hudakz | 0:238f0d0c0ba3 | 545 | |
hudakz | 0:238f0d0c0ba3 | 546 | if (rc == FAILURE && defaultMessageHandler.attached()) |
hudakz | 0:238f0d0c0ba3 | 547 | { |
hudakz | 0:238f0d0c0ba3 | 548 | MessageData md(topicName, message); |
hudakz | 0:238f0d0c0ba3 | 549 | defaultMessageHandler(md); |
hudakz | 0:238f0d0c0ba3 | 550 | rc = SUCCESS; |
hudakz | 0:238f0d0c0ba3 | 551 | } |
hudakz | 0:238f0d0c0ba3 | 552 | |
hudakz | 0:238f0d0c0ba3 | 553 | return rc; |
hudakz | 0:238f0d0c0ba3 | 554 | } |
hudakz | 0:238f0d0c0ba3 | 555 | |
hudakz | 0:238f0d0c0ba3 | 556 | |
hudakz | 0:238f0d0c0ba3 | 557 | |
hudakz | 0:238f0d0c0ba3 | 558 | template<class Network, class Timer, int a, int b> |
hudakz | 0:238f0d0c0ba3 | 559 | int MQTT::Client<Network, Timer, a, b>::yield(unsigned long timeout_ms) |
hudakz | 0:238f0d0c0ba3 | 560 | { |
hudakz | 0:238f0d0c0ba3 | 561 | int rc = SUCCESS; |
hudakz | 0:238f0d0c0ba3 | 562 | Timer timer; |
hudakz | 0:238f0d0c0ba3 | 563 | |
hudakz | 0:238f0d0c0ba3 | 564 | timer.countdown_ms(timeout_ms); |
hudakz | 0:238f0d0c0ba3 | 565 | while (!timer.expired()) |
hudakz | 0:238f0d0c0ba3 | 566 | { |
hudakz | 0:238f0d0c0ba3 | 567 | if (cycle(timer) < 0) |
hudakz | 0:238f0d0c0ba3 | 568 | { |
hudakz | 0:238f0d0c0ba3 | 569 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 570 | break; |
hudakz | 0:238f0d0c0ba3 | 571 | } |
hudakz | 0:238f0d0c0ba3 | 572 | } |
hudakz | 0:238f0d0c0ba3 | 573 | |
hudakz | 0:238f0d0c0ba3 | 574 | return rc; |
hudakz | 0:238f0d0c0ba3 | 575 | } |
hudakz | 0:238f0d0c0ba3 | 576 | |
hudakz | 0:238f0d0c0ba3 | 577 | |
hudakz | 0:238f0d0c0ba3 | 578 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 579 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::cycle(Timer& timer) |
hudakz | 0:238f0d0c0ba3 | 580 | { |
hudakz | 0:238f0d0c0ba3 | 581 | // get one piece of work off the wire and one pass through |
hudakz | 0:238f0d0c0ba3 | 582 | int len = 0, |
hudakz | 0:238f0d0c0ba3 | 583 | rc = SUCCESS; |
hudakz | 0:238f0d0c0ba3 | 584 | |
hudakz | 0:238f0d0c0ba3 | 585 | int packet_type = readPacket(timer); // read the socket, see what work is due |
hudakz | 0:238f0d0c0ba3 | 586 | |
hudakz | 0:238f0d0c0ba3 | 587 | switch (packet_type) |
hudakz | 0:238f0d0c0ba3 | 588 | { |
hudakz | 0:238f0d0c0ba3 | 589 | default: |
hudakz | 0:238f0d0c0ba3 | 590 | // no more data to read, unrecoverable. Or read packet fails due to unexpected network error |
hudakz | 0:238f0d0c0ba3 | 591 | rc = packet_type; |
hudakz | 0:238f0d0c0ba3 | 592 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 593 | case 0: // timed out reading packet |
hudakz | 0:238f0d0c0ba3 | 594 | break; |
hudakz | 0:238f0d0c0ba3 | 595 | case CONNACK: |
hudakz | 0:238f0d0c0ba3 | 596 | case PUBACK: |
hudakz | 0:238f0d0c0ba3 | 597 | case SUBACK: |
hudakz | 0:238f0d0c0ba3 | 598 | break; |
hudakz | 0:238f0d0c0ba3 | 599 | case PUBLISH: |
hudakz | 0:238f0d0c0ba3 | 600 | { |
hudakz | 0:238f0d0c0ba3 | 601 | MQTTString topicName = MQTTString_initializer; |
hudakz | 0:238f0d0c0ba3 | 602 | Message msg; |
hudakz | 0:238f0d0c0ba3 | 603 | int intQoS; |
hudakz | 0:238f0d0c0ba3 | 604 | msg.payloadlen = 0; /* this is a size_t, but deserialize publish sets this as int */ |
hudakz | 0:238f0d0c0ba3 | 605 | if (MQTTDeserialize_publish((unsigned char*)&msg.dup, &intQoS, (unsigned char*)&msg.retained, (unsigned short*)&msg.id, &topicName, |
hudakz | 0:238f0d0c0ba3 | 606 | (unsigned char**)&msg.payload, (int*)&msg.payloadlen, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
hudakz | 0:238f0d0c0ba3 | 607 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 608 | msg.qos = (enum QoS)intQoS; |
hudakz | 0:238f0d0c0ba3 | 609 | #if MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 610 | if (msg.qos != QOS2) |
hudakz | 0:238f0d0c0ba3 | 611 | #endif |
hudakz | 0:238f0d0c0ba3 | 612 | deliverMessage(topicName, msg); |
hudakz | 0:238f0d0c0ba3 | 613 | #if MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 614 | else if (isQoS2msgidFree(msg.id)) |
hudakz | 0:238f0d0c0ba3 | 615 | { |
hudakz | 0:238f0d0c0ba3 | 616 | if (useQoS2msgid(msg.id)) |
hudakz | 0:238f0d0c0ba3 | 617 | deliverMessage(topicName, msg); |
hudakz | 0:238f0d0c0ba3 | 618 | else |
hudakz | 0:238f0d0c0ba3 | 619 | WARN("Maximum number of incoming QoS2 messages exceeded"); |
hudakz | 0:238f0d0c0ba3 | 620 | } |
hudakz | 0:238f0d0c0ba3 | 621 | #endif |
hudakz | 0:238f0d0c0ba3 | 622 | #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 623 | if (msg.qos != QOS0) |
hudakz | 0:238f0d0c0ba3 | 624 | { |
hudakz | 0:238f0d0c0ba3 | 625 | if (msg.qos == QOS1) |
hudakz | 0:238f0d0c0ba3 | 626 | len = MQTTSerialize_ack(sendbuf, MAX_MQTT_PACKET_SIZE, PUBACK, 0, msg.id); |
hudakz | 0:238f0d0c0ba3 | 627 | else if (msg.qos == QOS2) |
hudakz | 0:238f0d0c0ba3 | 628 | len = MQTTSerialize_ack(sendbuf, MAX_MQTT_PACKET_SIZE, PUBREC, 0, msg.id); |
hudakz | 0:238f0d0c0ba3 | 629 | if (len <= 0) |
hudakz | 0:238f0d0c0ba3 | 630 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 631 | else |
hudakz | 0:238f0d0c0ba3 | 632 | rc = sendPacket(len, timer); |
hudakz | 0:238f0d0c0ba3 | 633 | if (rc == FAILURE) |
hudakz | 0:238f0d0c0ba3 | 634 | goto exit; // there was a problem |
hudakz | 0:238f0d0c0ba3 | 635 | } |
hudakz | 0:238f0d0c0ba3 | 636 | break; |
hudakz | 0:238f0d0c0ba3 | 637 | #endif |
hudakz | 0:238f0d0c0ba3 | 638 | } |
hudakz | 0:238f0d0c0ba3 | 639 | #if MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 640 | case PUBREC: |
hudakz | 0:238f0d0c0ba3 | 641 | case PUBREL: |
hudakz | 0:238f0d0c0ba3 | 642 | unsigned short mypacketid; |
hudakz | 0:238f0d0c0ba3 | 643 | unsigned char dup, type; |
hudakz | 0:238f0d0c0ba3 | 644 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
hudakz | 0:238f0d0c0ba3 | 645 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 646 | else if ((len = MQTTSerialize_ack(sendbuf, MAX_MQTT_PACKET_SIZE, |
hudakz | 0:238f0d0c0ba3 | 647 | (packet_type == PUBREC) ? PUBREL : PUBCOMP, 0, mypacketid)) <= 0) |
hudakz | 0:238f0d0c0ba3 | 648 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 649 | else if ((rc = sendPacket(len, timer)) != SUCCESS) // send the PUBREL packet |
hudakz | 0:238f0d0c0ba3 | 650 | rc = FAILURE; // there was a problem |
hudakz | 0:238f0d0c0ba3 | 651 | if (rc == FAILURE) |
hudakz | 0:238f0d0c0ba3 | 652 | goto exit; // there was a problem |
hudakz | 0:238f0d0c0ba3 | 653 | if (packet_type == PUBREL) |
hudakz | 0:238f0d0c0ba3 | 654 | freeQoS2msgid(mypacketid); |
hudakz | 0:238f0d0c0ba3 | 655 | break; |
hudakz | 0:238f0d0c0ba3 | 656 | |
hudakz | 0:238f0d0c0ba3 | 657 | case PUBCOMP: |
hudakz | 0:238f0d0c0ba3 | 658 | break; |
hudakz | 0:238f0d0c0ba3 | 659 | #endif |
hudakz | 0:238f0d0c0ba3 | 660 | case PINGRESP: |
hudakz | 0:238f0d0c0ba3 | 661 | ping_outstanding = false; |
hudakz | 0:238f0d0c0ba3 | 662 | break; |
hudakz | 0:238f0d0c0ba3 | 663 | } |
hudakz | 0:238f0d0c0ba3 | 664 | |
hudakz | 0:238f0d0c0ba3 | 665 | if (keepalive() != SUCCESS) |
hudakz | 0:238f0d0c0ba3 | 666 | //check only keepalive FAILURE status so that previous FAILURE status can be considered as FAULT |
hudakz | 0:238f0d0c0ba3 | 667 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 668 | |
hudakz | 0:238f0d0c0ba3 | 669 | exit: |
hudakz | 0:238f0d0c0ba3 | 670 | if (rc == SUCCESS) |
hudakz | 0:238f0d0c0ba3 | 671 | rc = packet_type; |
hudakz | 0:238f0d0c0ba3 | 672 | else if (isconnected) |
hudakz | 0:238f0d0c0ba3 | 673 | closeSession(); |
hudakz | 0:238f0d0c0ba3 | 674 | return rc; |
hudakz | 0:238f0d0c0ba3 | 675 | } |
hudakz | 0:238f0d0c0ba3 | 676 | |
hudakz | 0:238f0d0c0ba3 | 677 | |
hudakz | 0:238f0d0c0ba3 | 678 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 679 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::keepalive() |
hudakz | 0:238f0d0c0ba3 | 680 | { |
hudakz | 0:238f0d0c0ba3 | 681 | int rc = SUCCESS; |
hudakz | 0:238f0d0c0ba3 | 682 | static Timer ping_sent; |
hudakz | 0:238f0d0c0ba3 | 683 | |
hudakz | 0:238f0d0c0ba3 | 684 | if (keepAliveInterval == 0) |
hudakz | 0:238f0d0c0ba3 | 685 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 686 | |
hudakz | 0:238f0d0c0ba3 | 687 | if (ping_outstanding) |
hudakz | 0:238f0d0c0ba3 | 688 | { |
hudakz | 0:238f0d0c0ba3 | 689 | if (ping_sent.expired()) |
hudakz | 0:238f0d0c0ba3 | 690 | { |
hudakz | 0:238f0d0c0ba3 | 691 | rc = FAILURE; // session failure |
hudakz | 0:238f0d0c0ba3 | 692 | #if defined(MQTT_DEBUG) |
hudakz | 0:238f0d0c0ba3 | 693 | DEBUG("PINGRESP not received in keepalive interval\r\n"); |
hudakz | 0:238f0d0c0ba3 | 694 | #endif |
hudakz | 0:238f0d0c0ba3 | 695 | } |
hudakz | 0:238f0d0c0ba3 | 696 | } |
hudakz | 0:238f0d0c0ba3 | 697 | else if (last_sent.expired() || last_received.expired()) |
hudakz | 0:238f0d0c0ba3 | 698 | { |
hudakz | 0:238f0d0c0ba3 | 699 | Timer timer(1000); |
hudakz | 0:238f0d0c0ba3 | 700 | int len = MQTTSerialize_pingreq(sendbuf, MAX_MQTT_PACKET_SIZE); |
hudakz | 0:238f0d0c0ba3 | 701 | if (len > 0 && (rc = sendPacket(len, timer)) == SUCCESS) // send the ping packet |
hudakz | 0:238f0d0c0ba3 | 702 | { |
hudakz | 0:238f0d0c0ba3 | 703 | ping_outstanding = true; |
hudakz | 0:238f0d0c0ba3 | 704 | ping_sent.countdown(this->keepAliveInterval); |
hudakz | 0:238f0d0c0ba3 | 705 | } |
hudakz | 0:238f0d0c0ba3 | 706 | } |
hudakz | 0:238f0d0c0ba3 | 707 | exit: |
hudakz | 0:238f0d0c0ba3 | 708 | return rc; |
hudakz | 0:238f0d0c0ba3 | 709 | } |
hudakz | 0:238f0d0c0ba3 | 710 | |
hudakz | 0:238f0d0c0ba3 | 711 | |
hudakz | 0:238f0d0c0ba3 | 712 | // only used in single-threaded mode where one command at a time is in process |
hudakz | 0:238f0d0c0ba3 | 713 | template<class Network, class Timer, int a, int b> |
hudakz | 0:238f0d0c0ba3 | 714 | int MQTT::Client<Network, Timer, a, b>::waitfor(int packet_type, Timer& timer) |
hudakz | 0:238f0d0c0ba3 | 715 | { |
hudakz | 0:238f0d0c0ba3 | 716 | int rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 717 | |
hudakz | 0:238f0d0c0ba3 | 718 | do |
hudakz | 0:238f0d0c0ba3 | 719 | { |
hudakz | 0:238f0d0c0ba3 | 720 | if (timer.expired()) |
hudakz | 0:238f0d0c0ba3 | 721 | break; // we timed out |
hudakz | 0:238f0d0c0ba3 | 722 | rc = cycle(timer); |
hudakz | 0:238f0d0c0ba3 | 723 | } |
hudakz | 0:238f0d0c0ba3 | 724 | while (rc != packet_type && rc >= 0); |
hudakz | 0:238f0d0c0ba3 | 725 | |
hudakz | 0:238f0d0c0ba3 | 726 | return rc; |
hudakz | 0:238f0d0c0ba3 | 727 | } |
hudakz | 0:238f0d0c0ba3 | 728 | |
hudakz | 0:238f0d0c0ba3 | 729 | |
hudakz | 0:238f0d0c0ba3 | 730 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 731 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::connect(MQTTPacket_connectData& options, connackData& data) |
hudakz | 0:238f0d0c0ba3 | 732 | { |
hudakz | 0:238f0d0c0ba3 | 733 | Timer connect_timer(command_timeout_ms); |
hudakz | 0:238f0d0c0ba3 | 734 | int rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 735 | int len = 0; |
hudakz | 0:238f0d0c0ba3 | 736 | |
hudakz | 0:238f0d0c0ba3 | 737 | if (isconnected) // don't send connect packet again if we are already connected |
hudakz | 0:238f0d0c0ba3 | 738 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 739 | |
hudakz | 0:238f0d0c0ba3 | 740 | this->keepAliveInterval = options.keepAliveInterval; |
hudakz | 0:238f0d0c0ba3 | 741 | this->cleansession = options.cleansession; |
hudakz | 0:238f0d0c0ba3 | 742 | if ((len = MQTTSerialize_connect(sendbuf, MAX_MQTT_PACKET_SIZE, &options)) <= 0) |
hudakz | 0:238f0d0c0ba3 | 743 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 744 | if ((rc = sendPacket(len, connect_timer)) != SUCCESS) // send the connect packet |
hudakz | 0:238f0d0c0ba3 | 745 | goto exit; // there was a problem |
hudakz | 0:238f0d0c0ba3 | 746 | |
hudakz | 0:238f0d0c0ba3 | 747 | if (this->keepAliveInterval > 0) |
hudakz | 0:238f0d0c0ba3 | 748 | last_received.countdown(this->keepAliveInterval); |
hudakz | 0:238f0d0c0ba3 | 749 | // this will be a blocking call, wait for the connack |
hudakz | 0:238f0d0c0ba3 | 750 | if (waitfor(CONNACK, connect_timer) == CONNACK) |
hudakz | 0:238f0d0c0ba3 | 751 | { |
hudakz | 0:238f0d0c0ba3 | 752 | data.rc = 0; |
hudakz | 0:238f0d0c0ba3 | 753 | data.sessionPresent = false; |
hudakz | 0:238f0d0c0ba3 | 754 | if (MQTTDeserialize_connack((unsigned char*)&data.sessionPresent, |
hudakz | 0:238f0d0c0ba3 | 755 | (unsigned char*)&data.rc, readbuf, MAX_MQTT_PACKET_SIZE) == 1) |
hudakz | 0:238f0d0c0ba3 | 756 | rc = data.rc; |
hudakz | 0:238f0d0c0ba3 | 757 | else |
hudakz | 0:238f0d0c0ba3 | 758 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 759 | } |
hudakz | 0:238f0d0c0ba3 | 760 | else |
hudakz | 0:238f0d0c0ba3 | 761 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 762 | |
hudakz | 0:238f0d0c0ba3 | 763 | #if MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 764 | // resend any inflight publish |
hudakz | 0:238f0d0c0ba3 | 765 | if (inflightMsgid > 0 && inflightQoS == QOS2 && pubrel) |
hudakz | 0:238f0d0c0ba3 | 766 | { |
hudakz | 0:238f0d0c0ba3 | 767 | if ((len = MQTTSerialize_ack(sendbuf, MAX_MQTT_PACKET_SIZE, PUBREL, 0, inflightMsgid)) <= 0) |
hudakz | 0:238f0d0c0ba3 | 768 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 769 | else |
hudakz | 0:238f0d0c0ba3 | 770 | rc = publish(len, connect_timer, inflightQoS); |
hudakz | 0:238f0d0c0ba3 | 771 | } |
hudakz | 0:238f0d0c0ba3 | 772 | else |
hudakz | 0:238f0d0c0ba3 | 773 | #endif |
hudakz | 0:238f0d0c0ba3 | 774 | #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 775 | if (inflightMsgid > 0) |
hudakz | 0:238f0d0c0ba3 | 776 | { |
hudakz | 0:238f0d0c0ba3 | 777 | memcpy(sendbuf, pubbuf, MAX_MQTT_PACKET_SIZE); |
hudakz | 0:238f0d0c0ba3 | 778 | rc = publish(inflightLen, connect_timer, inflightQoS); |
hudakz | 0:238f0d0c0ba3 | 779 | } |
hudakz | 0:238f0d0c0ba3 | 780 | #endif |
hudakz | 0:238f0d0c0ba3 | 781 | |
hudakz | 0:238f0d0c0ba3 | 782 | exit: |
hudakz | 0:238f0d0c0ba3 | 783 | if (rc == SUCCESS) |
hudakz | 0:238f0d0c0ba3 | 784 | { |
hudakz | 0:238f0d0c0ba3 | 785 | isconnected = true; |
hudakz | 0:238f0d0c0ba3 | 786 | ping_outstanding = false; |
hudakz | 0:238f0d0c0ba3 | 787 | } |
hudakz | 0:238f0d0c0ba3 | 788 | return rc; |
hudakz | 0:238f0d0c0ba3 | 789 | } |
hudakz | 0:238f0d0c0ba3 | 790 | |
hudakz | 0:238f0d0c0ba3 | 791 | |
hudakz | 0:238f0d0c0ba3 | 792 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 793 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::connect(MQTTPacket_connectData& options) |
hudakz | 0:238f0d0c0ba3 | 794 | { |
hudakz | 0:238f0d0c0ba3 | 795 | connackData data; |
hudakz | 0:238f0d0c0ba3 | 796 | return connect(options, data); |
hudakz | 0:238f0d0c0ba3 | 797 | } |
hudakz | 0:238f0d0c0ba3 | 798 | |
hudakz | 0:238f0d0c0ba3 | 799 | |
hudakz | 0:238f0d0c0ba3 | 800 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 801 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::connect() |
hudakz | 0:238f0d0c0ba3 | 802 | { |
hudakz | 0:238f0d0c0ba3 | 803 | MQTTPacket_connectData default_options = MQTTPacket_connectData_initializer; |
hudakz | 0:238f0d0c0ba3 | 804 | return connect(default_options); |
hudakz | 0:238f0d0c0ba3 | 805 | } |
hudakz | 0:238f0d0c0ba3 | 806 | |
hudakz | 0:238f0d0c0ba3 | 807 | |
hudakz | 0:238f0d0c0ba3 | 808 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS> |
hudakz | 0:238f0d0c0ba3 | 809 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::setMessageHandler(const char* topicFilter, messageHandler messageHandler) |
hudakz | 0:238f0d0c0ba3 | 810 | { |
hudakz | 0:238f0d0c0ba3 | 811 | int rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 812 | int i = -1; |
hudakz | 0:238f0d0c0ba3 | 813 | |
hudakz | 0:238f0d0c0ba3 | 814 | // first check for an existing matching slot |
hudakz | 0:238f0d0c0ba3 | 815 | for (i = 0; i < MAX_MESSAGE_HANDLERS; ++i) |
hudakz | 0:238f0d0c0ba3 | 816 | { |
hudakz | 0:238f0d0c0ba3 | 817 | if (messageHandlers[i].topicFilter != 0 && strcmp(messageHandlers[i].topicFilter, topicFilter) == 0) |
hudakz | 0:238f0d0c0ba3 | 818 | { |
hudakz | 0:238f0d0c0ba3 | 819 | if (messageHandler == 0) // remove existing |
hudakz | 0:238f0d0c0ba3 | 820 | { |
hudakz | 0:238f0d0c0ba3 | 821 | messageHandlers[i].topicFilter = 0; |
hudakz | 0:238f0d0c0ba3 | 822 | messageHandlers[i].fp.detach(); |
hudakz | 0:238f0d0c0ba3 | 823 | } |
hudakz | 0:238f0d0c0ba3 | 824 | rc = SUCCESS; // return i when adding new subscription |
hudakz | 0:238f0d0c0ba3 | 825 | break; |
hudakz | 0:238f0d0c0ba3 | 826 | } |
hudakz | 0:238f0d0c0ba3 | 827 | } |
hudakz | 0:238f0d0c0ba3 | 828 | // if no existing, look for empty slot (unless we are removing) |
hudakz | 0:238f0d0c0ba3 | 829 | if (messageHandler != 0) { |
hudakz | 0:238f0d0c0ba3 | 830 | if (rc == FAILURE) |
hudakz | 0:238f0d0c0ba3 | 831 | { |
hudakz | 0:238f0d0c0ba3 | 832 | for (i = 0; i < MAX_MESSAGE_HANDLERS; ++i) |
hudakz | 0:238f0d0c0ba3 | 833 | { |
hudakz | 0:238f0d0c0ba3 | 834 | if (messageHandlers[i].topicFilter == 0) |
hudakz | 0:238f0d0c0ba3 | 835 | { |
hudakz | 0:238f0d0c0ba3 | 836 | rc = SUCCESS; |
hudakz | 0:238f0d0c0ba3 | 837 | break; |
hudakz | 0:238f0d0c0ba3 | 838 | } |
hudakz | 0:238f0d0c0ba3 | 839 | } |
hudakz | 0:238f0d0c0ba3 | 840 | } |
hudakz | 0:238f0d0c0ba3 | 841 | if (i < MAX_MESSAGE_HANDLERS) |
hudakz | 0:238f0d0c0ba3 | 842 | { |
hudakz | 0:238f0d0c0ba3 | 843 | messageHandlers[i].topicFilter = topicFilter; |
hudakz | 0:238f0d0c0ba3 | 844 | messageHandlers[i].fp.attach(messageHandler); |
hudakz | 0:238f0d0c0ba3 | 845 | } |
hudakz | 0:238f0d0c0ba3 | 846 | } |
hudakz | 0:238f0d0c0ba3 | 847 | return rc; |
hudakz | 0:238f0d0c0ba3 | 848 | } |
hudakz | 0:238f0d0c0ba3 | 849 | |
hudakz | 0:238f0d0c0ba3 | 850 | |
hudakz | 0:238f0d0c0ba3 | 851 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS> |
hudakz | 0:238f0d0c0ba3 | 852 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::subscribe(const char* topicFilter, |
hudakz | 0:238f0d0c0ba3 | 853 | enum QoS qos, messageHandler messageHandler, subackData& data) |
hudakz | 0:238f0d0c0ba3 | 854 | { |
hudakz | 0:238f0d0c0ba3 | 855 | int rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 856 | Timer timer(command_timeout_ms); |
hudakz | 0:238f0d0c0ba3 | 857 | int len = 0; |
hudakz | 0:238f0d0c0ba3 | 858 | MQTTString topic = {(char*)topicFilter, {0, 0}}; |
hudakz | 0:238f0d0c0ba3 | 859 | |
hudakz | 0:238f0d0c0ba3 | 860 | if (!isconnected) |
hudakz | 0:238f0d0c0ba3 | 861 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 862 | |
hudakz | 0:238f0d0c0ba3 | 863 | len = MQTTSerialize_subscribe(sendbuf, MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic, (int*)&qos); |
hudakz | 0:238f0d0c0ba3 | 864 | if (len <= 0) |
hudakz | 0:238f0d0c0ba3 | 865 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 866 | if ((rc = sendPacket(len, timer)) != SUCCESS) // send the subscribe packet |
hudakz | 0:238f0d0c0ba3 | 867 | goto exit; // there was a problem |
hudakz | 0:238f0d0c0ba3 | 868 | |
hudakz | 0:238f0d0c0ba3 | 869 | if (waitfor(SUBACK, timer) == SUBACK) // wait for suback |
hudakz | 0:238f0d0c0ba3 | 870 | { |
hudakz | 0:238f0d0c0ba3 | 871 | int count = 0; |
hudakz | 0:238f0d0c0ba3 | 872 | unsigned short mypacketid; |
hudakz | 0:238f0d0c0ba3 | 873 | data.grantedQoS = 0; |
hudakz | 0:238f0d0c0ba3 | 874 | if (MQTTDeserialize_suback(&mypacketid, 1, &count, &data.grantedQoS, readbuf, MAX_MQTT_PACKET_SIZE) == 1) |
hudakz | 0:238f0d0c0ba3 | 875 | { |
hudakz | 0:238f0d0c0ba3 | 876 | if (data.grantedQoS != 0x80) |
hudakz | 0:238f0d0c0ba3 | 877 | rc = setMessageHandler(topicFilter, messageHandler); |
hudakz | 0:238f0d0c0ba3 | 878 | } |
hudakz | 0:238f0d0c0ba3 | 879 | } |
hudakz | 0:238f0d0c0ba3 | 880 | else |
hudakz | 0:238f0d0c0ba3 | 881 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 882 | |
hudakz | 0:238f0d0c0ba3 | 883 | exit: |
hudakz | 0:238f0d0c0ba3 | 884 | if (rc == FAILURE) |
hudakz | 0:238f0d0c0ba3 | 885 | closeSession(); |
hudakz | 0:238f0d0c0ba3 | 886 | return rc; |
hudakz | 0:238f0d0c0ba3 | 887 | } |
hudakz | 0:238f0d0c0ba3 | 888 | |
hudakz | 0:238f0d0c0ba3 | 889 | |
hudakz | 0:238f0d0c0ba3 | 890 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS> |
hudakz | 0:238f0d0c0ba3 | 891 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::subscribe(const char* topicFilter, enum QoS qos, messageHandler messageHandler) |
hudakz | 0:238f0d0c0ba3 | 892 | { |
hudakz | 0:238f0d0c0ba3 | 893 | subackData data; |
hudakz | 0:238f0d0c0ba3 | 894 | return subscribe(topicFilter, qos, messageHandler, data); |
hudakz | 0:238f0d0c0ba3 | 895 | } |
hudakz | 0:238f0d0c0ba3 | 896 | |
hudakz | 0:238f0d0c0ba3 | 897 | |
hudakz | 0:238f0d0c0ba3 | 898 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int MAX_MESSAGE_HANDLERS> |
hudakz | 0:238f0d0c0ba3 | 899 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, MAX_MESSAGE_HANDLERS>::unsubscribe(const char* topicFilter) |
hudakz | 0:238f0d0c0ba3 | 900 | { |
hudakz | 0:238f0d0c0ba3 | 901 | int rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 902 | Timer timer(command_timeout_ms); |
hudakz | 0:238f0d0c0ba3 | 903 | MQTTString topic = {(char*)topicFilter, {0, 0}}; |
hudakz | 0:238f0d0c0ba3 | 904 | int len = 0; |
hudakz | 0:238f0d0c0ba3 | 905 | |
hudakz | 0:238f0d0c0ba3 | 906 | if (!isconnected) |
hudakz | 0:238f0d0c0ba3 | 907 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 908 | |
hudakz | 0:238f0d0c0ba3 | 909 | if ((len = MQTTSerialize_unsubscribe(sendbuf, MAX_MQTT_PACKET_SIZE, 0, packetid.getNext(), 1, &topic)) <= 0) |
hudakz | 0:238f0d0c0ba3 | 910 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 911 | if ((rc = sendPacket(len, timer)) != SUCCESS) // send the unsubscribe packet |
hudakz | 0:238f0d0c0ba3 | 912 | goto exit; // there was a problem |
hudakz | 0:238f0d0c0ba3 | 913 | |
hudakz | 0:238f0d0c0ba3 | 914 | if (waitfor(UNSUBACK, timer) == UNSUBACK) |
hudakz | 0:238f0d0c0ba3 | 915 | { |
hudakz | 0:238f0d0c0ba3 | 916 | unsigned short mypacketid; // should be the same as the packetid above |
hudakz | 0:238f0d0c0ba3 | 917 | if (MQTTDeserialize_unsuback(&mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) == 1) |
hudakz | 0:238f0d0c0ba3 | 918 | { |
hudakz | 0:238f0d0c0ba3 | 919 | // remove the subscription message handler associated with this topic, if there is one |
hudakz | 0:238f0d0c0ba3 | 920 | setMessageHandler(topicFilter, 0); |
hudakz | 0:238f0d0c0ba3 | 921 | } |
hudakz | 0:238f0d0c0ba3 | 922 | } |
hudakz | 0:238f0d0c0ba3 | 923 | else |
hudakz | 0:238f0d0c0ba3 | 924 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 925 | |
hudakz | 0:238f0d0c0ba3 | 926 | exit: |
hudakz | 0:238f0d0c0ba3 | 927 | if (rc != SUCCESS) |
hudakz | 0:238f0d0c0ba3 | 928 | closeSession(); |
hudakz | 0:238f0d0c0ba3 | 929 | return rc; |
hudakz | 0:238f0d0c0ba3 | 930 | } |
hudakz | 0:238f0d0c0ba3 | 931 | |
hudakz | 0:238f0d0c0ba3 | 932 | |
hudakz | 0:238f0d0c0ba3 | 933 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 934 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(int len, Timer& timer, enum QoS qos) |
hudakz | 0:238f0d0c0ba3 | 935 | { |
hudakz | 0:238f0d0c0ba3 | 936 | int rc; |
hudakz | 0:238f0d0c0ba3 | 937 | |
hudakz | 0:238f0d0c0ba3 | 938 | if ((rc = sendPacket(len, timer)) != SUCCESS) // send the publish packet |
hudakz | 0:238f0d0c0ba3 | 939 | goto exit; // there was a problem |
hudakz | 0:238f0d0c0ba3 | 940 | |
hudakz | 0:238f0d0c0ba3 | 941 | #if MQTTCLIENT_QOS1 |
hudakz | 0:238f0d0c0ba3 | 942 | if (qos == QOS1) |
hudakz | 0:238f0d0c0ba3 | 943 | { |
hudakz | 0:238f0d0c0ba3 | 944 | if (waitfor(PUBACK, timer) == PUBACK) |
hudakz | 0:238f0d0c0ba3 | 945 | { |
hudakz | 0:238f0d0c0ba3 | 946 | unsigned short mypacketid; |
hudakz | 0:238f0d0c0ba3 | 947 | unsigned char dup, type; |
hudakz | 0:238f0d0c0ba3 | 948 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
hudakz | 0:238f0d0c0ba3 | 949 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 950 | else if (inflightMsgid == mypacketid) |
hudakz | 0:238f0d0c0ba3 | 951 | inflightMsgid = 0; |
hudakz | 0:238f0d0c0ba3 | 952 | } |
hudakz | 0:238f0d0c0ba3 | 953 | else |
hudakz | 0:238f0d0c0ba3 | 954 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 955 | } |
hudakz | 0:238f0d0c0ba3 | 956 | #endif |
hudakz | 0:238f0d0c0ba3 | 957 | #if MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 958 | else if (qos == QOS2) |
hudakz | 0:238f0d0c0ba3 | 959 | { |
hudakz | 0:238f0d0c0ba3 | 960 | if (waitfor(PUBCOMP, timer) == PUBCOMP) |
hudakz | 0:238f0d0c0ba3 | 961 | { |
hudakz | 0:238f0d0c0ba3 | 962 | unsigned short mypacketid; |
hudakz | 0:238f0d0c0ba3 | 963 | unsigned char dup, type; |
hudakz | 0:238f0d0c0ba3 | 964 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, MAX_MQTT_PACKET_SIZE) != 1) |
hudakz | 0:238f0d0c0ba3 | 965 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 966 | else if (inflightMsgid == mypacketid) |
hudakz | 0:238f0d0c0ba3 | 967 | inflightMsgid = 0; |
hudakz | 0:238f0d0c0ba3 | 968 | } |
hudakz | 0:238f0d0c0ba3 | 969 | else |
hudakz | 0:238f0d0c0ba3 | 970 | rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 971 | } |
hudakz | 0:238f0d0c0ba3 | 972 | #endif |
hudakz | 0:238f0d0c0ba3 | 973 | |
hudakz | 0:238f0d0c0ba3 | 974 | exit: |
hudakz | 0:238f0d0c0ba3 | 975 | if (rc != SUCCESS) |
hudakz | 0:238f0d0c0ba3 | 976 | closeSession(); |
hudakz | 0:238f0d0c0ba3 | 977 | return rc; |
hudakz | 0:238f0d0c0ba3 | 978 | } |
hudakz | 0:238f0d0c0ba3 | 979 | |
hudakz | 0:238f0d0c0ba3 | 980 | |
hudakz | 0:238f0d0c0ba3 | 981 | |
hudakz | 0:238f0d0c0ba3 | 982 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 983 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(const char* topicName, void* payload, size_t payloadlen, unsigned short& id, enum QoS qos, bool retained) |
hudakz | 0:238f0d0c0ba3 | 984 | { |
hudakz | 0:238f0d0c0ba3 | 985 | int rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 986 | Timer timer(command_timeout_ms); |
hudakz | 0:238f0d0c0ba3 | 987 | MQTTString topicString = MQTTString_initializer; |
hudakz | 0:238f0d0c0ba3 | 988 | int len = 0; |
hudakz | 0:238f0d0c0ba3 | 989 | |
hudakz | 0:238f0d0c0ba3 | 990 | if (!isconnected) |
hudakz | 0:238f0d0c0ba3 | 991 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 992 | |
hudakz | 0:238f0d0c0ba3 | 993 | topicString.cstring = (char*)topicName; |
hudakz | 0:238f0d0c0ba3 | 994 | |
hudakz | 0:238f0d0c0ba3 | 995 | #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 996 | if (qos == QOS1 || qos == QOS2) |
hudakz | 0:238f0d0c0ba3 | 997 | id = packetid.getNext(); |
hudakz | 0:238f0d0c0ba3 | 998 | #endif |
hudakz | 0:238f0d0c0ba3 | 999 | |
hudakz | 0:238f0d0c0ba3 | 1000 | len = MQTTSerialize_publish(sendbuf, MAX_MQTT_PACKET_SIZE, 0, qos, retained, id, |
hudakz | 0:238f0d0c0ba3 | 1001 | topicString, (unsigned char*)payload, payloadlen); |
hudakz | 0:238f0d0c0ba3 | 1002 | if (len <= 0) |
hudakz | 0:238f0d0c0ba3 | 1003 | goto exit; |
hudakz | 0:238f0d0c0ba3 | 1004 | |
hudakz | 0:238f0d0c0ba3 | 1005 | #if MQTTCLIENT_QOS1 || MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 1006 | if (!cleansession) |
hudakz | 0:238f0d0c0ba3 | 1007 | { |
hudakz | 0:238f0d0c0ba3 | 1008 | memcpy(pubbuf, sendbuf, len); |
hudakz | 0:238f0d0c0ba3 | 1009 | inflightMsgid = id; |
hudakz | 0:238f0d0c0ba3 | 1010 | inflightLen = len; |
hudakz | 0:238f0d0c0ba3 | 1011 | inflightQoS = qos; |
hudakz | 0:238f0d0c0ba3 | 1012 | #if MQTTCLIENT_QOS2 |
hudakz | 0:238f0d0c0ba3 | 1013 | pubrel = false; |
hudakz | 0:238f0d0c0ba3 | 1014 | #endif |
hudakz | 0:238f0d0c0ba3 | 1015 | } |
hudakz | 0:238f0d0c0ba3 | 1016 | #endif |
hudakz | 0:238f0d0c0ba3 | 1017 | |
hudakz | 0:238f0d0c0ba3 | 1018 | rc = publish(len, timer, qos); |
hudakz | 0:238f0d0c0ba3 | 1019 | exit: |
hudakz | 0:238f0d0c0ba3 | 1020 | return rc; |
hudakz | 0:238f0d0c0ba3 | 1021 | } |
hudakz | 0:238f0d0c0ba3 | 1022 | |
hudakz | 0:238f0d0c0ba3 | 1023 | |
hudakz | 0:238f0d0c0ba3 | 1024 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 1025 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(const char* topicName, void* payload, size_t payloadlen, enum QoS qos, bool retained) |
hudakz | 0:238f0d0c0ba3 | 1026 | { |
hudakz | 0:238f0d0c0ba3 | 1027 | unsigned short id = 0; // dummy - not used for anything |
hudakz | 0:238f0d0c0ba3 | 1028 | return publish(topicName, payload, payloadlen, id, qos, retained); |
hudakz | 0:238f0d0c0ba3 | 1029 | } |
hudakz | 0:238f0d0c0ba3 | 1030 | |
hudakz | 0:238f0d0c0ba3 | 1031 | |
hudakz | 0:238f0d0c0ba3 | 1032 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 1033 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::publish(const char* topicName, Message& message) |
hudakz | 0:238f0d0c0ba3 | 1034 | { |
hudakz | 0:238f0d0c0ba3 | 1035 | return publish(topicName, message.payload, message.payloadlen, message.qos, message.retained); |
hudakz | 0:238f0d0c0ba3 | 1036 | } |
hudakz | 0:238f0d0c0ba3 | 1037 | |
hudakz | 0:238f0d0c0ba3 | 1038 | |
hudakz | 0:238f0d0c0ba3 | 1039 | template<class Network, class Timer, int MAX_MQTT_PACKET_SIZE, int b> |
hudakz | 0:238f0d0c0ba3 | 1040 | int MQTT::Client<Network, Timer, MAX_MQTT_PACKET_SIZE, b>::disconnect() |
hudakz | 0:238f0d0c0ba3 | 1041 | { |
hudakz | 0:238f0d0c0ba3 | 1042 | int rc = FAILURE; |
hudakz | 0:238f0d0c0ba3 | 1043 | Timer timer(command_timeout_ms); // we might wait for incomplete incoming publishes to complete |
hudakz | 0:238f0d0c0ba3 | 1044 | int len = MQTTSerialize_disconnect(sendbuf, MAX_MQTT_PACKET_SIZE); |
hudakz | 0:238f0d0c0ba3 | 1045 | if (len > 0) |
hudakz | 0:238f0d0c0ba3 | 1046 | rc = sendPacket(len, timer); // send the disconnect packet |
hudakz | 0:238f0d0c0ba3 | 1047 | closeSession(); |
hudakz | 0:238f0d0c0ba3 | 1048 | return rc; |
hudakz | 0:238f0d0c0ba3 | 1049 | } |
hudakz | 0:238f0d0c0ba3 | 1050 | |
hudakz | 0:238f0d0c0ba3 | 1051 | #endif |