arduino-mqtt | MQTT library for Arduino

by 256dpi C Version: v2.5.1 License: MIT

X-Ray Key Features Code Snippets Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | arduino-mqtt Summary

arduino-mqtt is a C library typically used in Internet of Things (IoT), Arduino applications. arduino-mqtt has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

MQTT library for Arduino

Support

Quality

Security

License

Reuse

Support

arduino-mqtt has a medium active ecosystem.

It has 894 star(s) with 215 fork(s). There are 59 watchers for this library.

It had no major release in the last 12 months.

There are 13 open issues and 227 have been closed. On average issues are closed in 500 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of arduino-mqtt is v2.5.1

Quality

arduino-mqtt has no bugs reported.

Security

arduino-mqtt has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

arduino-mqtt is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

arduino-mqtt releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

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arduino-mqtt Key Features

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arduino-mqtt Examples and Code Snippets

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Community Discussions

Trending Discussions on arduino-mqtt

Socket error on client <>, disconnecting with Paho MQTT-SN Gateway and ESP8266 CLient

NodeMCU (ESP8266) Exception 28 when connecting to MQTT broker

QUESTION

Socket error on client <>, disconnecting with Paho MQTT-SN Gateway and ESP8266 CLient

Asked 2019-Nov-27 at 03:20

I'm trying to test MQTT-SN.

I'm using Mosquitto Broker, Paho MQTT-SN Gateway and this library (https://github.com/S3ler/arduino-mqtt-sn-client) for the clients.

I'm using an esp8266 as a client.

With this client, I can connect, subscribe, receive from subscribed topics but I cant publish into topics

...

ANSWER

Answered 2019-Nov-27 at 03:20

Thank you for the help Dalton Cézane.

But I found the problem in an open issue in the client's library:

Having trouble with your example WiFiUdpMqttSnClient program in that it does not successfully publish the test messages. I'm using paho-mqtt-sn gateway.

I'm bashing around in the dark a bit but I think this is because it publishes the messages with the flag TopicIdType set to 2. I think it should be zero (normal) because it's not pre-registered nor is it a short topic.

In file MqttSnClient.h line 216 the call to send_publish has short_topic set to true. But that's not all; in file mqttsn_messages.h around line 215 if short_topic flag is false it sets the flag to predefined. I've removed the latter 'else' clause so the flag is set to zero and I can now publish successfully.

I suspect my hack is not a complete solution but I hope it helps you resolve this issue.

This comment was made by @nottledim, big thanks!

Now i can publish without a problem using my esp8266.

Just leaving here if anyone has this problem.

link to the issue: https://github.com/S3ler/arduino-mqtt-sn-client/issues/3

Source https://stackoverflow.com/questions/59039420

QUESTION

NodeMCU (ESP8266) Exception 28 when connecting to MQTT broker

Asked 2019-Mar-15 at 18:08

I am using a NodeMCU (ESP8266) as a WiFi client to connect to an MQTT broker run on my computer. Using this setup in Windows using WSL (Ubuntu), the MQTT broker seems to work perfectly fine. The ESP8266, however, throws an error in the Serial console immediately when it attempts connect to the MQTT server. WiFi connects without incident.

Please find below a working example of my code:

...

ANSWER

Answered 2019-Mar-15 at 17:37

You're missing some setup on the MQTT client. Unfortunately, this MQTT library isn't clever enough to notice you didn't set a server name and crashes when you call connect() without it being fully set up.

You need a call to the begin() method before you call connect().

Try rewriting your connect() function like this:

Source https://stackoverflow.com/questions/55176201

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install arduino-mqtt

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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