mosca

问题 Is there any way to implement request-response pattern with mosca MQTT to "check reply from the client and re publish if i dont receive expected reply within expected time". I believe this is possible in Mqtt 5, but as of now, I have to use Mosca broker with QoS 1(which support until Mqtt 3.1.1) I am looking for a Node js workaround to achieve this. 回答1: As per my comment you can implement a request-response pattern with any MQTT broker but, prior to v5, you need to implement this yourself

问题 Is there any way to implement request-response pattern with mosca MQTT to "check reply from the client and re publish if i dont receive expected reply within expected time". I believe this is possible in Mqtt 5, but as of now, I have to use Mosca broker with QoS 1(which support until Mqtt 3.1.1) I am looking for a Node js workaround to achieve this. 回答1: As per my comment you can implement a request-response pattern with any MQTT broker but, prior to v5, you need to implement this yourself

问题 I have mosca mqtt broker runnning. I connect to it using paho-mqtt from a python client. I have two threads which I run parallely in my code, one to receive messages and the other to publish. def SendCommand(rpm,valve_opening): control_packet = { ######## } print(control_packet) print('sending command') # client.publish("cmd",control_packet) def on_connect(client, userdata, flags, rc): if rc==0: print("connected OK Returned code=",rc) client.subscribe('data/#') else: print("Bad connection

问题 I am trying to establish MQTT communication with my local MQTT server on my pc (node.js, express, Mosca) and Esp8266. esp8286 is not connecting with my server, the error is Attempting MQTT connection...failed, rc=-2 try again in 5 seconds Can't connect to Broker. Here is Node js code: var moscaSettings = { host: '0.0.0.0', port: 1883, http: { port: 8002, host: '0.0.0.0', static: './mqtt/', bundle: true, }, }; var server = new mosca.Server(moscaSettings); // var server = new mosca.Server({ //

问题 I am trying to establish MQTT communication with my local MQTT server on my pc (node.js, express, Mosca) and Esp8266. esp8286 is not connecting with my server, the error is Attempting MQTT connection...failed, rc=-2 try again in 5 seconds Can't connect to Broker. Here is Node js code: var moscaSettings = { host: '0.0.0.0', port: 1883, http: { port: 8002, host: '0.0.0.0', static: './mqtt/', bundle: true, }, }; var server = new mosca.Server(moscaSettings); // var server = new mosca.Server({ //

问题 I am trying to set up Mosca MQTT broker which is based on node.js From the documentation below, https://github.com/mcollina/mosca/wiki/TLS-SSL-Configuration var mosca = require('mosca') var SECURE_KEY = __dirname + '/../../test/secure/tls-key.pem'; var SECURE_CERT = __dirname + '/../../test/secure/tls-cert.pem'; Where do I get tls-key.pem and tls-cert.pem ? 回答1: From the link https://github.com/mcollina/mosca/wiki/TLS-SSL-Configuration in your question, you are directed to another link https:

问题 I am trying to implement a node.js mqtt client with TLS using the package below; https://www.npmjs.com/package/mqtt#client The code for running mqtt client without TLS is as follows; var mqtt = require('mqtt') var client = mqtt.connect('mqtt://test.mosquitto.org') client.on('connect', function () { client.subscribe('presence') client.publish('presence', 'Hello mqtt') }) client.on('message', function (topic, message) { // message is Buffer console.log(message.toString()) client.end() }) How