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Iniital commit
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Cabooman
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8 changed files with 1127 additions and 4 deletions
184
Software/src/lib/knolleary-pubsubclient/PubSubClient.h
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184
Software/src/lib/knolleary-pubsubclient/PubSubClient.h
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/*
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PubSubClient.h - A simple client for MQTT.
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Nick O'Leary
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http://knolleary.net
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*/
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#ifndef PubSubClient_h
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#define PubSubClient_h
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#include <Arduino.h>
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#include "IPAddress.h"
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#include "Client.h"
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#include "Stream.h"
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#define MQTT_VERSION_3_1 3
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#define MQTT_VERSION_3_1_1 4
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// MQTT_VERSION : Pick the version
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//#define MQTT_VERSION MQTT_VERSION_3_1
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#ifndef MQTT_VERSION
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#define MQTT_VERSION MQTT_VERSION_3_1_1
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#endif
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// MQTT_MAX_PACKET_SIZE : Maximum packet size. Override with setBufferSize().
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#ifndef MQTT_MAX_PACKET_SIZE
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#define MQTT_MAX_PACKET_SIZE 256
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#endif
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// MQTT_KEEPALIVE : keepAlive interval in Seconds. Override with setKeepAlive()
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#ifndef MQTT_KEEPALIVE
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#define MQTT_KEEPALIVE 15
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#endif
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// MQTT_SOCKET_TIMEOUT: socket timeout interval in Seconds. Override with setSocketTimeout()
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#ifndef MQTT_SOCKET_TIMEOUT
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#define MQTT_SOCKET_TIMEOUT 15
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#endif
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// MQTT_MAX_TRANSFER_SIZE : limit how much data is passed to the network client
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// in each write call. Needed for the Arduino Wifi Shield. Leave undefined to
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// pass the entire MQTT packet in each write call.
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//#define MQTT_MAX_TRANSFER_SIZE 80
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// Possible values for client.state()
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#define MQTT_CONNECTION_TIMEOUT -4
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#define MQTT_CONNECTION_LOST -3
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#define MQTT_CONNECT_FAILED -2
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#define MQTT_DISCONNECTED -1
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#define MQTT_CONNECTED 0
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#define MQTT_CONNECT_BAD_PROTOCOL 1
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#define MQTT_CONNECT_BAD_CLIENT_ID 2
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#define MQTT_CONNECT_UNAVAILABLE 3
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#define MQTT_CONNECT_BAD_CREDENTIALS 4
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#define MQTT_CONNECT_UNAUTHORIZED 5
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#define MQTTCONNECT 1 << 4 // Client request to connect to Server
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#define MQTTCONNACK 2 << 4 // Connect Acknowledgment
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#define MQTTPUBLISH 3 << 4 // Publish message
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#define MQTTPUBACK 4 << 4 // Publish Acknowledgment
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#define MQTTPUBREC 5 << 4 // Publish Received (assured delivery part 1)
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#define MQTTPUBREL 6 << 4 // Publish Release (assured delivery part 2)
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#define MQTTPUBCOMP 7 << 4 // Publish Complete (assured delivery part 3)
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#define MQTTSUBSCRIBE 8 << 4 // Client Subscribe request
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#define MQTTSUBACK 9 << 4 // Subscribe Acknowledgment
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#define MQTTUNSUBSCRIBE 10 << 4 // Client Unsubscribe request
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#define MQTTUNSUBACK 11 << 4 // Unsubscribe Acknowledgment
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#define MQTTPINGREQ 12 << 4 // PING Request
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#define MQTTPINGRESP 13 << 4 // PING Response
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#define MQTTDISCONNECT 14 << 4 // Client is Disconnecting
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#define MQTTReserved 15 << 4 // Reserved
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#define MQTTQOS0 (0 << 1)
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#define MQTTQOS1 (1 << 1)
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#define MQTTQOS2 (2 << 1)
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// Maximum size of fixed header and variable length size header
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#define MQTT_MAX_HEADER_SIZE 5
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#if defined(ESP8266) || defined(ESP32)
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#include <functional>
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#define MQTT_CALLBACK_SIGNATURE std::function<void(char*, uint8_t*, unsigned int)> callback
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#else
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#define MQTT_CALLBACK_SIGNATURE void (*callback)(char*, uint8_t*, unsigned int)
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#endif
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#define CHECK_STRING_LENGTH(l,s) if (l+2+strnlen(s, this->bufferSize) > this->bufferSize) {_client->stop();return false;}
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class PubSubClient : public Print {
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private:
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Client* _client;
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uint8_t* buffer;
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uint16_t bufferSize;
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uint16_t keepAlive;
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uint16_t socketTimeout;
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uint16_t nextMsgId;
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unsigned long lastOutActivity;
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unsigned long lastInActivity;
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bool pingOutstanding;
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MQTT_CALLBACK_SIGNATURE;
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uint32_t readPacket(uint8_t*);
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boolean readByte(uint8_t * result);
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boolean readByte(uint8_t * result, uint16_t * index);
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boolean write(uint8_t header, uint8_t* buf, uint16_t length);
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uint16_t writeString(const char* string, uint8_t* buf, uint16_t pos);
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// Build up the header ready to send
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// Returns the size of the header
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// Note: the header is built at the end of the first MQTT_MAX_HEADER_SIZE bytes, so will start
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// (MQTT_MAX_HEADER_SIZE - <returned size>) bytes into the buffer
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size_t buildHeader(uint8_t header, uint8_t* buf, uint16_t length);
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IPAddress ip;
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const char* domain;
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uint16_t port;
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Stream* stream;
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int _state;
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public:
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PubSubClient();
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PubSubClient(Client& client);
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PubSubClient(IPAddress, uint16_t, Client& client);
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PubSubClient(IPAddress, uint16_t, Client& client, Stream&);
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PubSubClient(IPAddress, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client);
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PubSubClient(IPAddress, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client, Stream&);
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PubSubClient(uint8_t *, uint16_t, Client& client);
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PubSubClient(uint8_t *, uint16_t, Client& client, Stream&);
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PubSubClient(uint8_t *, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client);
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PubSubClient(uint8_t *, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client, Stream&);
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PubSubClient(const char*, uint16_t, Client& client);
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PubSubClient(const char*, uint16_t, Client& client, Stream&);
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PubSubClient(const char*, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client);
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PubSubClient(const char*, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client, Stream&);
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~PubSubClient();
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PubSubClient& setServer(IPAddress ip, uint16_t port);
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PubSubClient& setServer(uint8_t * ip, uint16_t port);
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PubSubClient& setServer(const char * domain, uint16_t port);
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PubSubClient& setCallback(MQTT_CALLBACK_SIGNATURE);
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PubSubClient& setClient(Client& client);
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PubSubClient& setStream(Stream& stream);
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PubSubClient& setKeepAlive(uint16_t keepAlive);
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PubSubClient& setSocketTimeout(uint16_t timeout);
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boolean setBufferSize(uint16_t size);
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uint16_t getBufferSize();
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boolean connect(const char* id);
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boolean connect(const char* id, const char* user, const char* pass);
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boolean connect(const char* id, const char* willTopic, uint8_t willQos, boolean willRetain, const char* willMessage);
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boolean connect(const char* id, const char* user, const char* pass, const char* willTopic, uint8_t willQos, boolean willRetain, const char* willMessage);
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boolean connect(const char* id, const char* user, const char* pass, const char* willTopic, uint8_t willQos, boolean willRetain, const char* willMessage, boolean cleanSession);
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void disconnect();
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boolean publish(const char* topic, const char* payload);
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boolean publish(const char* topic, const char* payload, boolean retained);
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boolean publish(const char* topic, const uint8_t * payload, unsigned int plength);
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boolean publish(const char* topic, const uint8_t * payload, unsigned int plength, boolean retained);
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boolean publish_P(const char* topic, const char* payload, boolean retained);
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boolean publish_P(const char* topic, const uint8_t * payload, unsigned int plength, boolean retained);
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// Start to publish a message.
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// This API:
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// beginPublish(...)
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// one or more calls to write(...)
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// endPublish()
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// Allows for arbitrarily large payloads to be sent without them having to be copied into
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// a new buffer and held in memory at one time
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// Returns 1 if the message was started successfully, 0 if there was an error
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boolean beginPublish(const char* topic, unsigned int plength, boolean retained);
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// Finish off this publish message (started with beginPublish)
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// Returns 1 if the packet was sent successfully, 0 if there was an error
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int endPublish();
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// Write a single byte of payload (only to be used with beginPublish/endPublish)
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virtual size_t write(uint8_t);
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// Write size bytes from buffer into the payload (only to be used with beginPublish/endPublish)
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// Returns the number of bytes written
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virtual size_t write(const uint8_t *buffer, size_t size);
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boolean subscribe(const char* topic);
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boolean subscribe(const char* topic, uint8_t qos);
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boolean unsubscribe(const char* topic);
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boolean loop();
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boolean connected();
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int state();
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};
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#endif
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