Program to send NTP data to MQTT broker
Fork of MQTT by
MQTTClient.h@13:fd82db992024, 2014-04-11 (annotated)
- Committer:
- Ian Craggs
- Date:
- Fri Apr 11 22:46:37 2014 +0100
- Revision:
- 13:fd82db992024
- Parent:
- 12:cc7f2d62a393
- Parent:
- 11:db15da110a37
- Child:
- 15:64a57183aa03
Merged changes
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 | *******************************************************************************/ |
sam_grove | 0:fe461e4d7afe | 16 | |
icraggs | 2:dcfdd2abfe71 | 17 | #if !defined(MQTTCLIENT_H) |
icraggs | 2:dcfdd2abfe71 | 18 | #define MQTTCLIENT_H |
icraggs | 2:dcfdd2abfe71 | 19 | |
icraggs | 2:dcfdd2abfe71 | 20 | #include "FP.h" |
icraggs | 3:dbff6b768d28 | 21 | #include "MQTTPacket.h" |
icraggs | 6:4d312a49200b | 22 | #include "stdio.h" |
icraggs | 2:dcfdd2abfe71 | 23 | |
icraggs | 3:dbff6b768d28 | 24 | namespace MQTT |
icraggs | 3:dbff6b768d28 | 25 | { |
icraggs | 3:dbff6b768d28 | 26 | |
icraggs | 2:dcfdd2abfe71 | 27 | |
icraggs | 2:dcfdd2abfe71 | 28 | enum QoS { QOS0, QOS1, QOS2 }; |
sam_grove | 0:fe461e4d7afe | 29 | |
icraggs | 2:dcfdd2abfe71 | 30 | |
icraggs | 3:dbff6b768d28 | 31 | struct Message |
icraggs | 2:dcfdd2abfe71 | 32 | { |
icraggs | 2:dcfdd2abfe71 | 33 | enum QoS qos; |
icraggs | 2:dcfdd2abfe71 | 34 | bool retained; |
icraggs | 2:dcfdd2abfe71 | 35 | bool dup; |
Ian Craggs |
12:cc7f2d62a393 | 36 | unsigned short id; |
icraggs | 2:dcfdd2abfe71 | 37 | void *payload; |
icraggs | 2:dcfdd2abfe71 | 38 | size_t payloadlen; |
sam_grove | 0:fe461e4d7afe | 39 | }; |
sam_grove | 0:fe461e4d7afe | 40 | |
icraggs | 6:4d312a49200b | 41 | template<class Network, class Timer, class Thread> class Client; |
icraggs | 4:4ef00243708e | 42 | |
icraggs | 9:01b8cc7d94cc | 43 | class PacketId |
icraggs | 9:01b8cc7d94cc | 44 | { |
icraggs | 9:01b8cc7d94cc | 45 | public: |
icraggs | 9:01b8cc7d94cc | 46 | PacketId(); |
icraggs | 9:01b8cc7d94cc | 47 | |
Ian Craggs |
12:cc7f2d62a393 | 48 | int getNext(); |
Ian Craggs |
12:cc7f2d62a393 | 49 | |
icraggs | 9:01b8cc7d94cc | 50 | private: |
icraggs | 9:01b8cc7d94cc | 51 | static const int MAX_PACKET_ID = 65535; |
icraggs | 9:01b8cc7d94cc | 52 | int next; |
icraggs | 9:01b8cc7d94cc | 53 | }; |
icraggs | 9:01b8cc7d94cc | 54 | |
icraggs | 9:01b8cc7d94cc | 55 | typedef void (*messageHandler)(Message*); |
icraggs | 2:dcfdd2abfe71 | 56 | |
icraggs | 6:4d312a49200b | 57 | template<class Network, class Timer, class Thread> class Client |
icraggs | 2:dcfdd2abfe71 | 58 | { |
icraggs | 2:dcfdd2abfe71 | 59 | |
Ian Craggs |
12:cc7f2d62a393 | 60 | public: |
Ian Craggs |
12:cc7f2d62a393 | 61 | |
Ian Craggs |
12:cc7f2d62a393 | 62 | struct Result |
Ian Craggs |
12:cc7f2d62a393 | 63 | { |
Ian Craggs |
12:cc7f2d62a393 | 64 | /* success or failure result data */ |
Ian Craggs |
12:cc7f2d62a393 | 65 | Client<Network, Timer, Thread>* client; |
Ian Craggs |
12:cc7f2d62a393 | 66 | int connack_rc; |
Ian Craggs |
12:cc7f2d62a393 | 67 | }; |
Ian Craggs |
12:cc7f2d62a393 | 68 | |
Ian Craggs |
12:cc7f2d62a393 | 69 | typedef void (*resultHandler)(Result*); |
icraggs | 4:4ef00243708e | 70 | |
Ian Craggs |
12:cc7f2d62a393 | 71 | Client(Network* network, const int MAX_MQTT_PACKET_SIZE = 100, const int command_timeout = 30); |
icraggs | 2:dcfdd2abfe71 | 72 | |
icraggs | 9:01b8cc7d94cc | 73 | int connect(MQTTPacket_connectData* options = 0, resultHandler fn = 0); |
icraggs | 2:dcfdd2abfe71 | 74 | |
icraggs | 9:01b8cc7d94cc | 75 | template<class T> |
icraggs | 9:01b8cc7d94cc | 76 | int connect(MQTTPacket_connectData* options = 0, T *item = 0, void(T::*method)(Result *) = 0); // alternative to pass in pointer to member function |
icraggs | 9:01b8cc7d94cc | 77 | |
icraggs | 9:01b8cc7d94cc | 78 | int publish(const char* topic, Message* message, resultHandler rh = 0); |
sam_grove | 0:fe461e4d7afe | 79 | |
icraggs | 9:01b8cc7d94cc | 80 | int subscribe(const char* topicFilter, enum QoS qos, messageHandler mh, resultHandler rh = 0); |
icraggs | 2:dcfdd2abfe71 | 81 | |
Ian Craggs |
12:cc7f2d62a393 | 82 | int unsubscribe(const char* topicFilter, resultHandler rh = 0); |
icraggs | 9:01b8cc7d94cc | 83 | |
icraggs | 9:01b8cc7d94cc | 84 | int disconnect(int timeout, resultHandler rh = 0); |
sam_grove | 0:fe461e4d7afe | 85 | |
icraggs | 8:c46930bd6c82 | 86 | void run(void const *argument); |
icraggs | 8:c46930bd6c82 | 87 | |
icraggs | 2:dcfdd2abfe71 | 88 | private: |
icraggs | 2:dcfdd2abfe71 | 89 | |
Ian Craggs |
12:cc7f2d62a393 | 90 | int cycle(int timeout); |
Ian Craggs |
12:cc7f2d62a393 | 91 | int keepalive(); |
icraggs | 2:dcfdd2abfe71 | 92 | |
icraggs | 3:dbff6b768d28 | 93 | int decodePacket(int* value, int timeout); |
icraggs | 4:4ef00243708e | 94 | int readPacket(int timeout = -1); |
icraggs | 6:4d312a49200b | 95 | int sendPacket(int length, int timeout = -1); |
icraggs | 3:dbff6b768d28 | 96 | |
icraggs | 4:4ef00243708e | 97 | Thread* thread; |
icraggs | 4:4ef00243708e | 98 | Network* ipstack; |
Ian Craggs |
12:cc7f2d62a393 | 99 | Timer command_timer, ping_timer; |
icraggs | 4:4ef00243708e | 100 | |
icraggs | 9:01b8cc7d94cc | 101 | char* buf; |
icraggs | 2:dcfdd2abfe71 | 102 | int buflen; |
icraggs | 2:dcfdd2abfe71 | 103 | |
icraggs | 4:4ef00243708e | 104 | char* readbuf; |
Ian Craggs |
12:cc7f2d62a393 | 105 | int readbuflen; |
Ian Craggs |
12:cc7f2d62a393 | 106 | |
Ian Craggs |
12:cc7f2d62a393 | 107 | unsigned int keepAliveInterval; |
Ian Craggs |
12:cc7f2d62a393 | 108 | bool ping_outstanding; |
icraggs | 4:4ef00243708e | 109 | |
icraggs | 6:4d312a49200b | 110 | int command_timeout; // max time to wait for any MQTT command to complete, in seconds |
icraggs | 9:01b8cc7d94cc | 111 | PacketId packetid; |
icraggs | 9:01b8cc7d94cc | 112 | |
icraggs | 9:01b8cc7d94cc | 113 | typedef FP<void, Result*> resultHandlerFP; |
icraggs | 9:01b8cc7d94cc | 114 | // how many concurrent operations should we allow? Each one will require a function pointer |
icraggs | 9:01b8cc7d94cc | 115 | resultHandlerFP connectHandler; |
icraggs | 9:01b8cc7d94cc | 116 | |
icraggs | 9:01b8cc7d94cc | 117 | #define MAX_MESSAGE_HANDLERS 5 |
icraggs | 9:01b8cc7d94cc | 118 | typedef FP<void, Message*> messageHandlerFP; |
Ian Craggs |
12:cc7f2d62a393 | 119 | messageHandlerFP messageHandlers[MAX_MESSAGE_HANDLERS]; // Linked list, or constructor parameter to limit array size? |
Ian Craggs |
12:cc7f2d62a393 | 120 | |
Ian Craggs |
12:cc7f2d62a393 | 121 | static void threadfn(void* arg); |
icraggs | 11:db15da110a37 | 122 | |
sam_grove | 0:fe461e4d7afe | 123 | }; |
sam_grove | 0:fe461e4d7afe | 124 | |
Ian Craggs |
12:cc7f2d62a393 | 125 | } |
Ian Craggs |
12:cc7f2d62a393 | 126 | |
Ian Craggs |
12:cc7f2d62a393 | 127 | |
Ian Craggs |
12:cc7f2d62a393 | 128 | template<class Network, class Timer, class Thread> void MQTT::Client<Network, Timer, Thread>::threadfn(void* arg) |
Ian Craggs |
12:cc7f2d62a393 | 129 | { |
Ian Craggs |
12:cc7f2d62a393 | 130 | ((Client<Network, Timer, Thread>*) arg)->run(NULL); |
icraggs | 11:db15da110a37 | 131 | } |
icraggs | 11:db15da110a37 | 132 | |
icraggs | 11:db15da110a37 | 133 | |
Ian Craggs |
12:cc7f2d62a393 | 134 | template<class Network, class Timer, class Thread> MQTT::Client<Network, Timer, Thread>::Client(Network* network, const int MAX_MQTT_PACKET_SIZE, const int command_timeout) : packetid() |
icraggs | 8:c46930bd6c82 | 135 | { |
icraggs | 8:c46930bd6c82 | 136 | |
Ian Craggs |
12:cc7f2d62a393 | 137 | buf = new char[MAX_MQTT_PACKET_SIZE]; |
Ian Craggs |
12:cc7f2d62a393 | 138 | readbuf = new char[MAX_MQTT_PACKET_SIZE]; |
Ian Craggs |
12:cc7f2d62a393 | 139 | buflen = readbuflen = MAX_MQTT_PACKET_SIZE; |
icraggs | 8:c46930bd6c82 | 140 | this->command_timeout = command_timeout; |
icraggs | 8:c46930bd6c82 | 141 | this->thread = 0; |
icraggs | 8:c46930bd6c82 | 142 | this->ipstack = network; |
Ian Craggs |
12:cc7f2d62a393 | 143 | this->command_timer = Timer(); |
Ian Craggs |
12:cc7f2d62a393 | 144 | this->ping_timer = Timer(); |
Ian Craggs |
12:cc7f2d62a393 | 145 | this->ping_outstanding = 0; |
icraggs | 8:c46930bd6c82 | 146 | } |
icraggs | 8:c46930bd6c82 | 147 | |
icraggs | 8:c46930bd6c82 | 148 | |
icraggs | 8:c46930bd6c82 | 149 | template<class Network, class Timer, class Thread> int MQTT::Client<Network, Timer, Thread>::sendPacket(int length, int timeout) |
icraggs | 8:c46930bd6c82 | 150 | { |
icraggs | 8:c46930bd6c82 | 151 | int sent = 0; |
icraggs | 8:c46930bd6c82 | 152 | |
icraggs | 8:c46930bd6c82 | 153 | while (sent < length) |
Ian Craggs |
12:cc7f2d62a393 | 154 | sent += ipstack->write(&buf[sent], length, -1); |
Ian Craggs |
12:cc7f2d62a393 | 155 | if (sent == length) |
Ian Craggs |
12:cc7f2d62a393 | 156 | ping_timer.reset(); // record the fact that we have successfully sent the packet |
icraggs | 8:c46930bd6c82 | 157 | return sent; |
icraggs | 8:c46930bd6c82 | 158 | } |
icraggs | 8:c46930bd6c82 | 159 | |
icraggs | 8:c46930bd6c82 | 160 | |
icraggs | 8:c46930bd6c82 | 161 | template<class Network, class Timer, class Thread> int MQTT::Client<Network, Timer, Thread>::decodePacket(int* value, int timeout) |
icraggs | 8:c46930bd6c82 | 162 | { |
icraggs | 8:c46930bd6c82 | 163 | char c; |
icraggs | 8:c46930bd6c82 | 164 | int multiplier = 1; |
icraggs | 8:c46930bd6c82 | 165 | int len = 0; |
icraggs | 8:c46930bd6c82 | 166 | #define MAX_NO_OF_REMAINING_LENGTH_BYTES 4 |
icraggs | 8:c46930bd6c82 | 167 | |
icraggs | 8:c46930bd6c82 | 168 | *value = 0; |
icraggs | 8:c46930bd6c82 | 169 | do |
icraggs | 8:c46930bd6c82 | 170 | { |
icraggs | 8:c46930bd6c82 | 171 | int rc = MQTTPACKET_READ_ERROR; |
icraggs | 8:c46930bd6c82 | 172 | |
icraggs | 8:c46930bd6c82 | 173 | if (++len > MAX_NO_OF_REMAINING_LENGTH_BYTES) |
icraggs | 8:c46930bd6c82 | 174 | { |
icraggs | 8:c46930bd6c82 | 175 | rc = MQTTPACKET_READ_ERROR; /* bad data */ |
icraggs | 8:c46930bd6c82 | 176 | goto exit; |
icraggs | 8:c46930bd6c82 | 177 | } |
icraggs | 8:c46930bd6c82 | 178 | rc = ipstack->read(&c, 1, timeout); |
icraggs | 8:c46930bd6c82 | 179 | if (rc != 1) |
icraggs | 8:c46930bd6c82 | 180 | goto exit; |
icraggs | 8:c46930bd6c82 | 181 | *value += (c & 127) * multiplier; |
icraggs | 8:c46930bd6c82 | 182 | multiplier *= 128; |
icraggs | 8:c46930bd6c82 | 183 | } while ((c & 128) != 0); |
icraggs | 8:c46930bd6c82 | 184 | exit: |
icraggs | 8:c46930bd6c82 | 185 | return len; |
icraggs | 8:c46930bd6c82 | 186 | } |
icraggs | 8:c46930bd6c82 | 187 | |
icraggs | 8:c46930bd6c82 | 188 | |
icraggs | 8:c46930bd6c82 | 189 | /** |
icraggs | 8:c46930bd6c82 | 190 | * If any read fails in this method, then we should disconnect from the network, as on reconnect |
icraggs | 8:c46930bd6c82 | 191 | * the packets can be retried. |
icraggs | 8:c46930bd6c82 | 192 | * @param timeout the max time to wait for the packet read to complete, in milliseconds |
icraggs | 8:c46930bd6c82 | 193 | * @return the MQTT packet type, or -1 if none |
icraggs | 8:c46930bd6c82 | 194 | */ |
icraggs | 8:c46930bd6c82 | 195 | template<class Network, class Timer, class Thread> int MQTT::Client<Network, Timer, Thread>::readPacket(int timeout) |
icraggs | 8:c46930bd6c82 | 196 | { |
icraggs | 8:c46930bd6c82 | 197 | int rc = -1; |
icraggs | 8:c46930bd6c82 | 198 | MQTTHeader header = {0}; |
icraggs | 8:c46930bd6c82 | 199 | int len = 0; |
icraggs | 8:c46930bd6c82 | 200 | int rem_len = 0; |
icraggs | 8:c46930bd6c82 | 201 | |
icraggs | 8:c46930bd6c82 | 202 | /* 1. read the header byte. This has the packet type in it */ |
icraggs | 8:c46930bd6c82 | 203 | if (ipstack->read(readbuf, 1, timeout) != 1) |
icraggs | 8:c46930bd6c82 | 204 | goto exit; |
icraggs | 8:c46930bd6c82 | 205 | |
icraggs | 8:c46930bd6c82 | 206 | len = 1; |
icraggs | 8:c46930bd6c82 | 207 | /* 2. read the remaining length. This is variable in itself */ |
icraggs | 8:c46930bd6c82 | 208 | decodePacket(&rem_len, timeout); |
icraggs | 8:c46930bd6c82 | 209 | len += MQTTPacket_encode(readbuf + 1, rem_len); /* put the original remaining length back into the buffer */ |
icraggs | 8:c46930bd6c82 | 210 | |
icraggs | 8:c46930bd6c82 | 211 | /* 3. read the rest of the buffer using a callback to supply the rest of the data */ |
icraggs | 8:c46930bd6c82 | 212 | if (ipstack->read(readbuf + len, rem_len, timeout) != rem_len) |
icraggs | 8:c46930bd6c82 | 213 | goto exit; |
icraggs | 8:c46930bd6c82 | 214 | |
icraggs | 8:c46930bd6c82 | 215 | header.byte = readbuf[0]; |
icraggs | 8:c46930bd6c82 | 216 | rc = header.bits.type; |
icraggs | 8:c46930bd6c82 | 217 | exit: |
icraggs | 8:c46930bd6c82 | 218 | return rc; |
icraggs | 3:dbff6b768d28 | 219 | } |
icraggs | 3:dbff6b768d28 | 220 | |
icraggs | 8:c46930bd6c82 | 221 | |
Ian Craggs |
12:cc7f2d62a393 | 222 | template<class Network, class Timer, class Thread> int MQTT::Client<Network, Timer, Thread>::cycle(int timeout) |
icraggs | 8:c46930bd6c82 | 223 | { |
icraggs | 8:c46930bd6c82 | 224 | /* get one piece of work off the wire and one pass through */ |
icraggs | 8:c46930bd6c82 | 225 | |
Ian Craggs |
12:cc7f2d62a393 | 226 | // read the socket, see what work is due |
icraggs | 9:01b8cc7d94cc | 227 | int packet_type = readPacket(timeout); |
icraggs | 8:c46930bd6c82 | 228 | |
icraggs | 8:c46930bd6c82 | 229 | printf("packet type %d\n", packet_type); |
Ian Craggs |
12:cc7f2d62a393 | 230 | |
Ian Craggs |
12:cc7f2d62a393 | 231 | int len, rc; |
icraggs | 8:c46930bd6c82 | 232 | switch (packet_type) |
icraggs | 8:c46930bd6c82 | 233 | { |
Ian Craggs |
12:cc7f2d62a393 | 234 | case CONNACK: |
Ian Craggs |
12:cc7f2d62a393 | 235 | if (this->thread) |
Ian Craggs |
12:cc7f2d62a393 | 236 | { |
Ian Craggs |
12:cc7f2d62a393 | 237 | Result res = {this, 0}; |
Ian Craggs |
12:cc7f2d62a393 | 238 | int connack_rc = -1; |
Ian Craggs |
12:cc7f2d62a393 | 239 | if (MQTTDeserialize_connack(&res.connack_rc, readbuf, readbuflen) == 1) |
Ian Craggs |
12:cc7f2d62a393 | 240 | ; |
Ian Craggs |
12:cc7f2d62a393 | 241 | connectHandler(&res); |
Ian Craggs |
12:cc7f2d62a393 | 242 | } |
icraggs | 8:c46930bd6c82 | 243 | case PUBACK: |
icraggs | 8:c46930bd6c82 | 244 | case SUBACK: |
icraggs | 8:c46930bd6c82 | 245 | break; |
Ian Craggs |
12:cc7f2d62a393 | 246 | case PUBLISH: |
Ian Craggs |
12:cc7f2d62a393 | 247 | MQTTString topicName; |
Ian Craggs |
12:cc7f2d62a393 | 248 | Message msg; |
Ian Craggs |
12:cc7f2d62a393 | 249 | rc = MQTTDeserialize_publish((int*)&msg.dup, (int*)&msg.qos, (int*)&msg.retained, (int*)&msg.id, &topicName, |
Ian Craggs |
12:cc7f2d62a393 | 250 | (char**)&msg.payload, (int*)&msg.payloadlen, readbuf, readbuflen); |
Ian Craggs |
12:cc7f2d62a393 | 251 | if (msg.qos == QOS0) |
Ian Craggs |
12:cc7f2d62a393 | 252 | messageHandlers[0](&msg); |
Ian Craggs |
12:cc7f2d62a393 | 253 | break; |
Ian Craggs |
12:cc7f2d62a393 | 254 | case PUBREC: |
Ian Craggs |
12:cc7f2d62a393 | 255 | int type, dup, mypacketid; |
Ian Craggs |
12:cc7f2d62a393 | 256 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, readbuflen) == 1) |
Ian Craggs |
12:cc7f2d62a393 | 257 | ; |
Ian Craggs |
12:cc7f2d62a393 | 258 | len = MQTTSerialize_ack(buf, buflen, PUBREL, 0, mypacketid); |
Ian Craggs |
12:cc7f2d62a393 | 259 | rc = sendPacket(len); // send the subscribe packet |
Ian Craggs |
12:cc7f2d62a393 | 260 | if (rc != len) |
Ian Craggs |
12:cc7f2d62a393 | 261 | goto exit; // there was a problem |
Ian Craggs |
12:cc7f2d62a393 | 262 | |
icraggs | 8:c46930bd6c82 | 263 | break; |
icraggs | 8:c46930bd6c82 | 264 | case PUBCOMP: |
icraggs | 8:c46930bd6c82 | 265 | break; |
Ian Craggs |
12:cc7f2d62a393 | 266 | case PINGRESP: |
Ian Craggs |
12:cc7f2d62a393 | 267 | if (ping_outstanding) |
Ian Craggs |
12:cc7f2d62a393 | 268 | ping_outstanding = false; |
Ian Craggs |
12:cc7f2d62a393 | 269 | //else disconnect(); |
icraggs | 8:c46930bd6c82 | 270 | break; |
icraggs | 8:c46930bd6c82 | 271 | case -1: |
icraggs | 8:c46930bd6c82 | 272 | break; |
Ian Craggs |
12:cc7f2d62a393 | 273 | } |
Ian Craggs |
12:cc7f2d62a393 | 274 | keepalive(); |
Ian Craggs |
12:cc7f2d62a393 | 275 | exit: |
icraggs | 8:c46930bd6c82 | 276 | return packet_type; |
Ian Craggs |
12:cc7f2d62a393 | 277 | } |
Ian Craggs |
12:cc7f2d62a393 | 278 | |
Ian Craggs |
12:cc7f2d62a393 | 279 | |
Ian Craggs |
12:cc7f2d62a393 | 280 | template<class Network, class Timer, class Thread> int MQTT::Client<Network, Timer, Thread>::keepalive() |
Ian Craggs |
12:cc7f2d62a393 | 281 | { |
Ian Craggs |
12:cc7f2d62a393 | 282 | int rc = 0; |
Ian Craggs |
12:cc7f2d62a393 | 283 | |
Ian Craggs |
12:cc7f2d62a393 | 284 | if (keepAliveInterval == 0) |
Ian Craggs |
12:cc7f2d62a393 | 285 | goto exit; |
Ian Craggs |
12:cc7f2d62a393 | 286 | |
Ian Craggs |
12:cc7f2d62a393 | 287 | if (ping_timer.read_ms() >= (keepAliveInterval * 1000)) |
Ian Craggs |
12:cc7f2d62a393 | 288 | { |
Ian Craggs |
12:cc7f2d62a393 | 289 | if (ping_outstanding) |
Ian Craggs |
12:cc7f2d62a393 | 290 | rc = -1; |
Ian Craggs |
12:cc7f2d62a393 | 291 | else |
Ian Craggs |
12:cc7f2d62a393 | 292 | { |
Ian Craggs |
12:cc7f2d62a393 | 293 | int len = MQTTSerialize_pingreq(buf, buflen); |
Ian Craggs |
12:cc7f2d62a393 | 294 | rc = sendPacket(len); // send the connect packet |
Ian Craggs |
12:cc7f2d62a393 | 295 | if (rc != len) |
Ian Craggs |
12:cc7f2d62a393 | 296 | rc = -1; // indicate there's a problem |
Ian Craggs |
12:cc7f2d62a393 | 297 | else |
Ian Craggs |
12:cc7f2d62a393 | 298 | ping_outstanding = true; |
Ian Craggs |
12:cc7f2d62a393 | 299 | } |
Ian Craggs |
12:cc7f2d62a393 | 300 | } |
Ian Craggs |
12:cc7f2d62a393 | 301 | |
Ian Craggs |
12:cc7f2d62a393 | 302 | exit: |
Ian Craggs |
12:cc7f2d62a393 | 303 | return rc; |
icraggs | 8:c46930bd6c82 | 304 | } |
icraggs | 8:c46930bd6c82 | 305 | |
icraggs | 8:c46930bd6c82 | 306 | |
icraggs | 8:c46930bd6c82 | 307 | template<class Network, class Timer, class Thread> void MQTT::Client<Network, Timer, Thread>::run(void const *argument) |
Ian Craggs |
12:cc7f2d62a393 | 308 | { |
Ian Craggs |
12:cc7f2d62a393 | 309 | while (true) |
Ian Craggs |
12:cc7f2d62a393 | 310 | cycle((keepAliveInterval * 1000) - ping_timer.read_ms()); |
icraggs | 8:c46930bd6c82 | 311 | } |
icraggs | 8:c46930bd6c82 | 312 | |
icraggs | 8:c46930bd6c82 | 313 | |
icraggs | 9:01b8cc7d94cc | 314 | template<class Network, class Timer, class Thread> int MQTT::Client<Network, Timer, Thread>::connect(MQTTPacket_connectData* options, resultHandler resultHandler) |
Ian Craggs |
12:cc7f2d62a393 | 315 | { |
Ian Craggs |
12:cc7f2d62a393 | 316 | command_timer.start(); |
icraggs | 8:c46930bd6c82 | 317 | |
Ian Craggs |
12:cc7f2d62a393 | 318 | MQTTPacket_connectData default_options = MQTTPacket_connectData_initializer; |
icraggs | 8:c46930bd6c82 | 319 | if (options == 0) |
Ian Craggs |
12:cc7f2d62a393 | 320 | options = &default_options; // set default options if none were supplied |
icraggs | 8:c46930bd6c82 | 321 | |
Ian Craggs |
12:cc7f2d62a393 | 322 | this->keepAliveInterval = options->keepAliveInterval; |
Ian Craggs |
12:cc7f2d62a393 | 323 | ping_timer.start(); |
Ian Craggs |
12:cc7f2d62a393 | 324 | int len = MQTTSerialize_connect(buf, buflen, options); |
Ian Craggs |
12:cc7f2d62a393 | 325 | int rc = sendPacket(len); // send the connect packet |
Ian Craggs |
12:cc7f2d62a393 | 326 | if (rc != len) |
Ian Craggs |
12:cc7f2d62a393 | 327 | goto exit; // there was a problem |
icraggs | 8:c46930bd6c82 | 328 | |
Ian Craggs |
12:cc7f2d62a393 | 329 | if (resultHandler == 0) // wait until the connack is received |
Ian Craggs |
12:cc7f2d62a393 | 330 | { |
Ian Craggs |
12:cc7f2d62a393 | 331 | if (command_timer.read_ms() > (command_timeout * 1000)) |
Ian Craggs |
12:cc7f2d62a393 | 332 | goto exit; // we timed out |
icraggs | 8:c46930bd6c82 | 333 | // this will be a blocking call, wait for the connack |
Ian Craggs |
12:cc7f2d62a393 | 334 | if (cycle(command_timeout - command_timer.read_ms()) == CONNACK) |
icraggs | 8:c46930bd6c82 | 335 | { |
icraggs | 8:c46930bd6c82 | 336 | int connack_rc = -1; |
icraggs | 8:c46930bd6c82 | 337 | if (MQTTDeserialize_connack(&connack_rc, readbuf, readbuflen) == 1) |
icraggs | 8:c46930bd6c82 | 338 | rc = connack_rc; |
icraggs | 8:c46930bd6c82 | 339 | } |
icraggs | 8:c46930bd6c82 | 340 | } |
icraggs | 8:c46930bd6c82 | 341 | else |
icraggs | 8:c46930bd6c82 | 342 | { |
icraggs | 8:c46930bd6c82 | 343 | // set connect response callback function |
icraggs | 9:01b8cc7d94cc | 344 | connectHandler.attach(resultHandler); |
icraggs | 8:c46930bd6c82 | 345 | |
Ian Craggs |
12:cc7f2d62a393 | 346 | // start background thread |
icraggs | 11:db15da110a37 | 347 | this->thread = new Thread((void (*)(void const *argument))&MQTT::Client<Network, Timer, Thread>::threadfn, (void*)this); |
icraggs | 8:c46930bd6c82 | 348 | } |
Ian Craggs |
12:cc7f2d62a393 | 349 | |
Ian Craggs |
12:cc7f2d62a393 | 350 | exit: |
Ian Craggs |
12:cc7f2d62a393 | 351 | command_timer.stop(); |
Ian Craggs |
12:cc7f2d62a393 | 352 | command_timer.reset(); |
icraggs | 8:c46930bd6c82 | 353 | return rc; |
icraggs | 8:c46930bd6c82 | 354 | } |
icraggs | 8:c46930bd6c82 | 355 | |
icraggs | 8:c46930bd6c82 | 356 | |
Ian Craggs |
12:cc7f2d62a393 | 357 | template<class Network, class Timer, class Thread> int MQTT::Client<Network, Timer, Thread>::subscribe(const char* topicFilter, enum QoS qos, messageHandler messageHandler, resultHandler resultHandler) |
Ian Craggs |
12:cc7f2d62a393 | 358 | { |
Ian Craggs |
12:cc7f2d62a393 | 359 | command_timer.start(); |
Ian Craggs |
12:cc7f2d62a393 | 360 | |
icraggs | 8:c46930bd6c82 | 361 | MQTTString topic = {(char*)topicFilter, 0, 0}; |
icraggs | 8:c46930bd6c82 | 362 | |
Ian Craggs |
12:cc7f2d62a393 | 363 | int len = MQTTSerialize_subscribe(buf, buflen, 0, packetid.getNext(), 1, &topic, (int*)&qos); |
Ian Craggs |
12:cc7f2d62a393 | 364 | int rc = sendPacket(len); // send the subscribe packet |
Ian Craggs |
12:cc7f2d62a393 | 365 | if (rc != len) |
Ian Craggs |
12:cc7f2d62a393 | 366 | goto exit; // there was a problem |
icraggs | 8:c46930bd6c82 | 367 | |
icraggs | 8:c46930bd6c82 | 368 | /* wait for suback */ |
icraggs | 8:c46930bd6c82 | 369 | if (resultHandler == 0) |
icraggs | 8:c46930bd6c82 | 370 | { |
icraggs | 8:c46930bd6c82 | 371 | // this will block |
Ian Craggs |
12:cc7f2d62a393 | 372 | if (cycle(command_timeout - command_timer.read_ms()) == SUBACK) |
icraggs | 8:c46930bd6c82 | 373 | { |
icraggs | 9:01b8cc7d94cc | 374 | int count = 0, grantedQoS = -1, mypacketid; |
icraggs | 9:01b8cc7d94cc | 375 | if (MQTTDeserialize_suback(&mypacketid, 1, &count, &grantedQoS, readbuf, readbuflen) == 1) |
icraggs | 8:c46930bd6c82 | 376 | rc = grantedQoS; // 0, 1, 2 or 0x80 |
icraggs | 8:c46930bd6c82 | 377 | } |
icraggs | 8:c46930bd6c82 | 378 | } |
icraggs | 8:c46930bd6c82 | 379 | else |
icraggs | 8:c46930bd6c82 | 380 | { |
icraggs | 8:c46930bd6c82 | 381 | // set subscribe response callback function |
icraggs | 8:c46930bd6c82 | 382 | |
icraggs | 8:c46930bd6c82 | 383 | } |
Ian Craggs |
12:cc7f2d62a393 | 384 | |
Ian Craggs |
12:cc7f2d62a393 | 385 | exit: |
Ian Craggs |
12:cc7f2d62a393 | 386 | command_timer.stop(); |
Ian Craggs |
12:cc7f2d62a393 | 387 | command_timer.reset(); |
Ian Craggs |
12:cc7f2d62a393 | 388 | return rc; |
Ian Craggs |
12:cc7f2d62a393 | 389 | } |
Ian Craggs |
12:cc7f2d62a393 | 390 | |
Ian Craggs |
12:cc7f2d62a393 | 391 | |
Ian Craggs |
12:cc7f2d62a393 | 392 | template<class Network, class Timer, class Thread> int MQTT::Client<Network, Timer, Thread>::unsubscribe(const char* topicFilter, resultHandler resultHandler) |
Ian Craggs |
12:cc7f2d62a393 | 393 | { |
Ian Craggs |
12:cc7f2d62a393 | 394 | command_timer.start(); |
Ian Craggs |
12:cc7f2d62a393 | 395 | |
Ian Craggs |
12:cc7f2d62a393 | 396 | MQTTString topic = {(char*)topicFilter, 0, 0}; |
icraggs | 8:c46930bd6c82 | 397 | |
Ian Craggs |
12:cc7f2d62a393 | 398 | int len = MQTTSerialize_unsubscribe(buf, buflen, 0, packetid.getNext(), 1, &topic); |
Ian Craggs |
12:cc7f2d62a393 | 399 | int rc = sendPacket(len); // send the subscribe packet |
Ian Craggs |
12:cc7f2d62a393 | 400 | if (rc != len) |
Ian Craggs |
12:cc7f2d62a393 | 401 | goto exit; // there was a problem |
Ian Craggs |
12:cc7f2d62a393 | 402 | |
Ian Craggs |
12:cc7f2d62a393 | 403 | /* wait for suback */ |
Ian Craggs |
12:cc7f2d62a393 | 404 | if (resultHandler == 0) |
Ian Craggs |
12:cc7f2d62a393 | 405 | { |
Ian Craggs |
12:cc7f2d62a393 | 406 | // this will block |
Ian Craggs |
12:cc7f2d62a393 | 407 | if (cycle(command_timeout - command_timer.read_ms()) == UNSUBACK) |
Ian Craggs |
12:cc7f2d62a393 | 408 | { |
Ian Craggs |
12:cc7f2d62a393 | 409 | int mypacketid; |
Ian Craggs |
12:cc7f2d62a393 | 410 | if (MQTTDeserialize_unsuback(&mypacketid, readbuf, readbuflen) == 1) |
Ian Craggs |
12:cc7f2d62a393 | 411 | rc = 0; |
Ian Craggs |
12:cc7f2d62a393 | 412 | } |
Ian Craggs |
12:cc7f2d62a393 | 413 | } |
Ian Craggs |
12:cc7f2d62a393 | 414 | else |
Ian Craggs |
12:cc7f2d62a393 | 415 | { |
Ian Craggs |
12:cc7f2d62a393 | 416 | // set unsubscribe response callback function |
Ian Craggs |
12:cc7f2d62a393 | 417 | |
Ian Craggs |
12:cc7f2d62a393 | 418 | } |
Ian Craggs |
12:cc7f2d62a393 | 419 | |
Ian Craggs |
12:cc7f2d62a393 | 420 | exit: |
Ian Craggs |
12:cc7f2d62a393 | 421 | command_timer.stop(); |
Ian Craggs |
12:cc7f2d62a393 | 422 | command_timer.reset(); |
Ian Craggs |
12:cc7f2d62a393 | 423 | return rc; |
Ian Craggs |
12:cc7f2d62a393 | 424 | } |
Ian Craggs |
12:cc7f2d62a393 | 425 | |
Ian Craggs |
12:cc7f2d62a393 | 426 | |
Ian Craggs |
12:cc7f2d62a393 | 427 | |
Ian Craggs |
12:cc7f2d62a393 | 428 | template<class Network, class Timer, class Thread> int MQTT::Client<Network, Timer, Thread>::publish(const char* topicName, Message* message, resultHandler resultHandler) |
Ian Craggs |
12:cc7f2d62a393 | 429 | { |
Ian Craggs |
12:cc7f2d62a393 | 430 | command_timer.start(); |
Ian Craggs |
12:cc7f2d62a393 | 431 | |
Ian Craggs |
12:cc7f2d62a393 | 432 | MQTTString topic = {(char*)topicName, 0, 0}; |
Ian Craggs |
12:cc7f2d62a393 | 433 | |
Ian Craggs |
12:cc7f2d62a393 | 434 | message->id = packetid.getNext(); |
Ian Craggs |
12:cc7f2d62a393 | 435 | |
Ian Craggs |
12:cc7f2d62a393 | 436 | int len = MQTTSerialize_publish(buf, buflen, 0, message->qos, message->retained, message->id, topic, message->payload, message->payloadlen); |
Ian Craggs |
12:cc7f2d62a393 | 437 | int rc = sendPacket(len); // send the subscribe packet |
Ian Craggs |
12:cc7f2d62a393 | 438 | if (rc != len) |
Ian Craggs |
12:cc7f2d62a393 | 439 | goto exit; // there was a problem |
Ian Craggs |
12:cc7f2d62a393 | 440 | |
Ian Craggs |
12:cc7f2d62a393 | 441 | /* wait for acks */ |
Ian Craggs |
12:cc7f2d62a393 | 442 | if (resultHandler == 0) |
Ian Craggs |
12:cc7f2d62a393 | 443 | { |
Ian Craggs |
12:cc7f2d62a393 | 444 | if (message->qos == QOS1) |
Ian Craggs |
12:cc7f2d62a393 | 445 | { |
Ian Craggs |
12:cc7f2d62a393 | 446 | if (cycle(command_timeout - command_timer.read_ms()) == PUBACK) |
Ian Craggs |
12:cc7f2d62a393 | 447 | { |
Ian Craggs |
12:cc7f2d62a393 | 448 | int type, dup, mypacketid; |
Ian Craggs |
12:cc7f2d62a393 | 449 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, readbuflen) == 1) |
Ian Craggs |
12:cc7f2d62a393 | 450 | rc = 0; |
Ian Craggs |
12:cc7f2d62a393 | 451 | } |
Ian Craggs |
12:cc7f2d62a393 | 452 | } |
Ian Craggs |
12:cc7f2d62a393 | 453 | else if (message->qos == QOS2) |
Ian Craggs |
12:cc7f2d62a393 | 454 | { |
Ian Craggs |
12:cc7f2d62a393 | 455 | if (cycle(command_timeout - command_timer.read_ms()) == PUBREC) |
Ian Craggs |
12:cc7f2d62a393 | 456 | { |
Ian Craggs |
12:cc7f2d62a393 | 457 | int type, dup, mypacketid; |
Ian Craggs |
12:cc7f2d62a393 | 458 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, readbuflen) == 1) |
Ian Craggs |
12:cc7f2d62a393 | 459 | rc = 0; |
Ian Craggs |
12:cc7f2d62a393 | 460 | len = MQTTSerialize_ack(buf, buflen, PUBREL, 0, message->id); |
Ian Craggs |
12:cc7f2d62a393 | 461 | rc = sendPacket(len); // send the subscribe packet |
Ian Craggs |
12:cc7f2d62a393 | 462 | if (rc != len) |
Ian Craggs |
12:cc7f2d62a393 | 463 | goto exit; // there was a problem |
Ian Craggs |
12:cc7f2d62a393 | 464 | if (cycle(command_timeout - command_timer.read_ms()) == PUBCOMP) |
Ian Craggs |
12:cc7f2d62a393 | 465 | { |
Ian Craggs |
12:cc7f2d62a393 | 466 | if (MQTTDeserialize_ack(&type, &dup, &mypacketid, readbuf, readbuflen) == 1) |
Ian Craggs |
12:cc7f2d62a393 | 467 | rc = 0; |
Ian Craggs |
12:cc7f2d62a393 | 468 | } |
Ian Craggs |
12:cc7f2d62a393 | 469 | } |
Ian Craggs |
12:cc7f2d62a393 | 470 | } |
Ian Craggs |
12:cc7f2d62a393 | 471 | } |
Ian Craggs |
12:cc7f2d62a393 | 472 | else |
Ian Craggs |
12:cc7f2d62a393 | 473 | { |
Ian Craggs |
12:cc7f2d62a393 | 474 | // set publish response callback function |
Ian Craggs |
12:cc7f2d62a393 | 475 | |
Ian Craggs |
12:cc7f2d62a393 | 476 | } |
Ian Craggs |
12:cc7f2d62a393 | 477 | |
Ian Craggs |
12:cc7f2d62a393 | 478 | exit: |
Ian Craggs |
12:cc7f2d62a393 | 479 | command_timer.stop(); |
Ian Craggs |
12:cc7f2d62a393 | 480 | command_timer.reset(); |
icraggs | 8:c46930bd6c82 | 481 | return rc; |
icraggs | 8:c46930bd6c82 | 482 | } |
icraggs | 8:c46930bd6c82 | 483 | |
icraggs | 8:c46930bd6c82 | 484 | |
sam_grove | 0:fe461e4d7afe | 485 | #endif |