Open PeeJay opened 1 year ago
Hi, I'm just trying to find an arduino library managing mqtt over websockets as my broker is set like that.
I already tried the hideakitai lib and yours but I can't connect to the broker on port 443. I'm stuck in the loop attempting connection client.connect()
and an my debug reveals that this error is thrown :
LWMQTT_MISSING_OR_WRONG_PACKET
I'm using M5stack core2. Could you provide a working example with one of the library you mentioned ?
Is it definitely websockets, and not just MQTT over SSL?. This is for an ESP32
#include <Arduino.h>
#include <WiFi.h>
#include <WiFiMulti.h>
#include <WebSocketsClient.h>
#include <MQTT.h>
WebSocketsClient client;
MQTTClient mqtt;
WiFiMulti wiFiMulti;
void connect()
{
if (wiFiMulti.run() != WL_CONNECTED)
{
while (wiFiMulti.run() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
}
// connect to host with MQTT over WebSocket securely
Serial.print("Connecting to mqtt server as ");
String devId = "Arduino-" + String(ESP.getEfuseMac() >> 32, HEX);
Serial.println(devId);
client.beginSSL("server.com", 443, "/", "", "mqtt");
while (!client.isConnected())
{
client.loop();
delay(10);
}
// initialize mqtt client
mqtt.connect(devId.c_str(), "username", "password");
if (mqtt.connected())
{
Serial.println("Connected.");
}
else
{
Serial.println("Fail - retrying in 1 seconds]");
delay(1000);
}
}
void setup()
{
Serial.begin(115200);
wiFiMulti.addAP("wifiuser", "wifipass");
mqtt.begin(client);
connect();
}
void loop()
{
static unsigned long lastMeasure = 0;
static unsigned long measureTime = 1000 * 60;
if ((millis() - lastMeasure) > measureTime)
{
lastMeasure = millis();
// Check WiFi connection status
if (WiFi.status() != WL_CONNECTED || !mqtt.connected())
{
Serial.println("Reconnecting...");
connect();
}
// Send data on last sample
mqtt.publish("hello/world", "data goes here");
}
mqtt.loop();
delay(10);
}
Which gives the output
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13192
load:0x40080400,len:3028
entry 0x400805e4
Connecting to mqtt server as Arduino-3cab
Fail - retrying in 1 seconds]
Reconnecting...
Connecting to mqtt server as Arduino-3cab
Connected.
I've noticed that both libraries don't always connect on the first go, occasionally it takes a few retries. I'm not sure why.
Thank you very much, I finally managed to connect to my broker but using hideakitai library.
With yours, along with the example you provided, I wasn't able to compile because when invoking mqtt.begin(client)
the code behind is waiting for a Client
instance and not a WebSocketsClient
's one.
though i'm not sure about my headers management. Anyway you helped me a lot with your example ! And yes me too, the connection is failing at least once before establishing.
There is another library based on this one (https://github.com/hideakitai/MQTTPubSubClient) that has websockets support, but I prefer using this library so I have ported over the websockets part.
https://github.com/PeeJay/arduino-mqtt/tree/websockets
At the moment I have used the same #define WEBSOCKETS approach to enable it, but I'm sure there is a better way if I thought about it like some sort of abstract class. If this is something you are interested in I can keep working on it.