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Added packet type constants and other stylistic changes

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This commit is contained in:
Nicholas O'Leary 2011-03-25 22:51:51 +00:00
parent ce9fff9349
commit 632c44a4d1
2 changed files with 25 additions and 14 deletions
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22
PubSubClient/PubSubClient.cpp
View File

@ -8,10 +8,6 @@
#include "Client.h"
#include "string.h"
#define MQTTCONNECT 1<<4
#define MQTTPUBLISH 3<<4
#define MQTTSUBSCRIBE 8<<4
PubSubClient::PubSubClient() : _client(0) {
}
@ -26,7 +22,7 @@ int PubSubClient::connect(char *id, char* willTopic, uint8_t willQos, uint8_t wi
if (!connected()) {
if (_client.connect()) {
nextMsgId = 1;
uint8_t d[9] = {0x00,0x06,0x4d,0x51,0x49,0x73,0x64,0x70,0x03};
uint8_t d[9] = {0x00,0x06,'M','Q','I','s','d','p',MQTTPROTOCOLVERSION};
uint8_t length = 0;
int j;
for (j = 0;j<9;j++) {
@ -93,15 +89,15 @@ int PubSubClient::loop() {
if (connected()) {
long t = millis();
if (t - lastActivity > KEEPALIVE) {
_client.write(192);
_client.write(MQTTPINGREQ);
_client.write((uint8_t)0);
lastActivity = t;
}
if (_client.available()) {
uint8_t len = readPacket();
if (len > 0) {
uint8_t type = buffer[0]>>4;
if (type == 3) { // PUBLISH
uint8_t type = buffer[0]&0xF0;
if (type == MQTTPUBLISH) {
if (callback) {
uint8_t tl = (buffer[2]<<3)+buffer[3];
char topic[tl+1];
@ -113,8 +109,8 @@ int PubSubClient::loop() {
uint8_t *payload = buffer+4+tl;
callback(topic,payload,len-4-tl);
}
} else if (type == 12) { // PINGREG
_client.write(208);
} else if (type == MQTTPINGREQ) {
_client.write(MQTTPINGRESP);
_client.write((uint8_t)0);
lastActivity = t;
}
@ -154,9 +150,7 @@ int PubSubClient::publish(char* topic, uint8_t* payload, uint8_t plength, uint8_
int PubSubClient::write(uint8_t header, uint8_t* buf, uint8_t length) {
_client.write(header);
_client.write(length);
for (int i=0;i<length;i++) {
_client.write(buf[i]);
}
_client.write(buf,length);
return 0;
}
@ -174,7 +168,7 @@ void PubSubClient::subscribe(char* topic) {
}
void PubSubClient::disconnect() {
_client.write(224);
_client.write(MQTTDISCONNECT);
_client.write((uint8_t)0);
_client.stop();
lastActivity = millis();

17
PubSubClient/PubSubClient.h
View File

@ -12,6 +12,23 @@
#define MAX_PACKET_SIZE 128
#define KEEPALIVE 15000 // max value = 255000
// from mqtt-v3r1
#define MQTTPROTOCOLVERSION 3
#define MQTTCONNECT 1 << 4 // Client request to connect to Server
#define MQTTCONNACK 2 << 4 // Connect Acknowledgment
#define MQTTPUBLISH 3 << 4 // Publish message
#define MQTTPUBACK 4 << 4 // Publish Acknowledgment
#define MQTTPUBREC 5 << 4 // Publish Received (assured delivery part 1)
#define MQTTPUBREL 6 << 4 // Publish Release (assured delivery part 2)
#define MQTTPUBCOMP 7 << 4 // Publish Complete (assured delivery part 3)
#define MQTTSUBSCRIBE 8 << 4 // Client Subscribe request
#define MQTTSUBACK 9 << 4 // Subscribe Acknowledgment
#define MQTTUNSUBSCRIBE 10 << 4 // Client Unsubscribe request
#define MQTTUNSUBACK 11 << 4 // Unsubscribe Acknowledgment
#define MQTTPINGREQ 12 << 4 // PING Request
#define MQTTPINGRESP 13 << 4 // PING Response
#define MQTTDISCONNECT 14 << 4 // Client is Disconnecting
#define MQTTReserved 15 << 4 // Reserved
class PubSubClient {
private: