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Hi all, This is my very first library :) It implements MQTT standard V3.1.1 MQTT is a lightweight publish/subscribe messaging protocol. for further information see http://mqtt.org/. 32888 Publish/Subscribe The MQTT protocol is based on the principle of publishing messages and subscribing to to
link: Hi JP! My real world messages are published by ESP8266 running NodeMCU. But there is a handy java tool: mqtt-spy. Window/perspectives/detailed allow
link: Hi JP, If the connection to a server has not been connected, calling the MQTT.ping function does not return an event within MQTT_OnPing, this only fi
link: Good work !!

I'm not sure whether this solution runs over the internet or in a local network. If it runs over the internet than a full B4J server will probably be better in the long run.
link: From your description it seems to me that your system has a central control point (your device / PC) which directly controls up to 5000 Android TVs lo
link: Hi, I'm going to develop a monitoring system for "indoor advertising" (advertising on tv inside groceries, pharmacies etc.). A mobile Monitoring App

It depends. Do you need realtime communication? If yes, use AsyncStreams. MQTT has delay about 0,5 to 1 second even in same LAN. But MQTT has a lot of advantages - ready to use authorization and authentication, simple addressing and monitoring. Take a look at jMQTTBrokerExtended library and examples
link: The key words in the sentence above are "local network", in that case you should use Network + AsyncStreams + B4XSerializator. Enjoy...
link: Hi,, i will start my project soon but i'm so confused, the project uses a local network consists of one server and multi clients , the server side rep

Hey, what, "I have no network to connect to and no 3G", you need at least one of your quoted connected, or you will need wires all over the place. As I wrote in an B4R tutorial. "So what is MQTT? Well the quick and dirty answer to that question is that MQTT (Message Queuing Telemetry Transport) is
link: To tell you the truth I'm not sure why I gave you the previous answer. When I'm outside of my home I can control IoT devices via the internet, but bef

MQTT is based on TCP/IP, it is like HTTP, it works as loog as there is a TCP/IP network, it is irrelevant to link layer. I don't understand why you want to create the server in your app?
link: Hello, I am new MQTT technology and therefore I want to know will MQTT allow me to use Wifi for messaging? This option can to collect information from
link: Example MQTT chart room not worked. https://www.b4x.com/android/forum/threads/b4x-mqtt-chat-room.61568/ Checked the example on different versions of
link: You can use mqtt tech with wifi for messaging between mqtt clients... you need to run your broker into the network... u can find plenty examples

You can make the client subscribe to a specific topic. For example: mqtt.Subscribe("/#", 0) Then make the private messages go into that topic
link: Mqtt it just is a messaging protocol, how to send message to a specific client it depends on how you design your chat room，if everyone has an unique I
link: In the chat example, messages from one client are shown to all clients. How can you send a message to only one specific client if you know his name.
link: Is this method only suitable for the chat example? Or can this line be used anyway? This is permission for private messages, but it is not clear how t

RF Home Manager this is a MQTT client used to monitor all 433mhz sensors/remote controls in my house. at start i have an alarm system with several sensors IR/magnetic and several remote controls to manage external light, portal and garage door. globally, function is based on a rfbridge sonoff + e

Actually MQTT is the right solution due to its 1-to-many connection feature while bluetooth only allows 1-on-1 connection.
link: Maybe you can do the same with MQTT
link: Firebase Push Notification is a little overkill for my need and I have to learn it first; in the past I tried out local mqtt which keeps things simple

http://www.visualnet.inf.br/imagens/b4a/MqttTop.jpg This library was made based on MQTT Protocol Installation instructions: - Copy the .xml and .jar(s) files to your custom libraries folder - Select in your REFERENCED LIBRARIES http://www.visualnet.inf.br/imagens/b4a/MqttRef.png Version hist
link: I thing in VB6 the correct name to your found MQTT is MQ Series, the old way to connect to the brokers. look this examples: http://www.capitalware.co
link: Hey klarsys, This library MQTT for B4A is based in Paho Library, and this library not have the properties Last Testament, look: http://www
link: Posting to update; it seems the problem has to be with the mqtt object being in a code module. Declaring (and using) the mqtt object in an activity or

I know what is MQTT. Only I want to what is different two library
link: There is a single MQTT client library and it is named jMQTT.
link: The jMQTT library is compatible with B4A and B4J. https://www.b4x.-official-android-mqtt-client.59497/#post-375062 Here is an example for mqtt https:/
link: In the post MQTT Protocol is stated and the library can be downloaded from there:

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