logo
down
shadow

How to get MQTT subscriptions


How to get MQTT subscriptions

By : Pepis Bar
Date : November 26 2020, 04:01 AM
To fix this issue You can not.
There is no way to query the broker for what topics the client has subscribed to in the protocol and in fact most MQTT client libraries don't even keep a list of subscribed topics for the current session.
code :


Share : facebook icon twitter icon
Interrupt paho mqtt client to reload subscriptions

Interrupt paho mqtt client to reload subscriptions


By : Clayton Milner
Date : March 29 2020, 07:55 AM
hop of those help? I finally circled around to the following solution which seems to work. Whereas I was trying to run the notifier in another thread and the mqtt loop in the main thread, the trick seemed to be invert that setup:
code :
def restartMQTT():
    if Connection:
        Connection.loop_stop()
    connectMQTT()
    Connection.loop_start()

class FileEventHandler(pyinotify.ProcessEvent):
    def process_IN_CREATE(self, fileEvent):
        restartMQTT()

    def process_IN_DELETE(self, fileEvent):
        restartMQTT()


def main():
    restartMQTT()
    watchManager = pyinotify.WatchManager()
    notifier = pyinotify.Notifier(watchManager, FileEventHandler())
    watchManager.add_watch('/etc/my/config_directory', pyinotify.IN_CREATE | pyinotify.IN_DELETE)
    notifier.loop()
mqtt client subcribing to multiple subscriptions. whats the best way?

mqtt client subcribing to multiple subscriptions. whats the best way?


By : jkc
Date : March 29 2020, 07:55 AM
I hope this helps . Option 1 is REALLY not a good idea, it just makes so much extra work, maintaining the connection for all the separate clients and adds extra overhead to the broker.
Is there a way to use multiple feeds with Adafruit MQTT python client subscriptions?

Is there a way to use multiple feeds with Adafruit MQTT python client subscriptions?


By : Begi
Date : March 29 2020, 07:55 AM
it fixes the issue I'm using Adafruit IO MQTT python client to execute code based upon feeds. I want one feed to execute one function and a different to execute another. I've looked at this and searched around but nothing I have found shows how to subscribe to multiple feeds. , You can simply call subscribe multiple times, as in:
code :
for feed_id in ['feed1', 'feed2']:
  client.subscribe(feed_id)
Microsoft Azure: How to change subscriptions in a script that iterates through resources across multiple subscriptions

Microsoft Azure: How to change subscriptions in a script that iterates through resources across multiple subscriptions


By : starmarket
Date : March 29 2020, 07:55 AM
To fix this issue You can use the PowerShell cmdlet Select-AzureRmSubscription -SubscriptionId subscriptionId to change the current subscription event if the subscription is not in the same tenant. But the important thing is that the subscription which you want to change must be in the same account. The example about changing the subscription here:
Wildfly 18, MQTT and wildcard subscriptions

Wildfly 18, MQTT and wildcard subscriptions


By : greencoder
Date : September 28 2020, 01:00 PM
this one helps.
The server is running, I can even send messages to a defined topic (though it has to be defined).
Related Posts Related Posts :
  • How do I make this image larger?
  • Run icCube with JDK 10
  • Expression with Math.random() always returns the same value
  • Getting the Set with the most elements nested in a HashMap using Java Streams
  • XmlSlurper to parse XML and get value of inside elements using Groovy
  • Extracting data from HTML and formatting the output
  • SOLR documentCache JMX metrics clarification
  • Limiting Wildfly 14 Two-Way SSL to specific clients
  • How do I get Min and max values to only print when "year" is entered?
  • Hashmap can't loop - getKey() method not found - Using Java 8
  • Android Studio - Create an EditText with a click of a button
  • Mockito Test not invoking verify() method
  • Wrap method implementations of Java interfaces
  • Remediating dynamic SQL into prepared statements
  • Where do X and Y start at in swing windows
  • java code with files work from eclipse but dont work from cmd
  • Return page object from JPA query
  • I can't figure out why this code in my APCS multiple choice book returns 19
  • How to save data between methods
  • I'm trying to install Apache Gobblin. How can I install it using Gradle?
  • Spring Data Sorting Array or Set into Pageable
  • Question about the Java documentation and its implementation
  • How to make a JButton that when pressed it does a new action
  • Java hibernate No validator could be found for boolean
  • Making a POJO Thread Safe
  • Save the data of a text file in a arraylist
  • Sort a List<String[]> by indices using Comparator
  • Overloading in Java for user input?
  • Unable to format timestamp as YYYY-MM-DD HH:mm:ss in java
  • Access SQLite Helper From Adapter
  • How to stream a csv file with header to a HashMap<String, Double> in Java?
  • can't get go daddy ssl certificate to work with spring boot
  • ResourceBundle can't find BaseName gradle project java
  • Java; Jackson; Parsing the array of array json string
  • Java - map key lookup ignoring case
  • Jackson deserialize map null values to empty string
  • Anyone knows why setCount() is not working in twitter4j?
  • Object Visibility in a Multi-threaded Program in Java
  • Can't store and load an arraylist in an object file
  • convert a string number starts with `00` to `+` in java
  • Java - avoiding NonSuchElementException using ConcurrentLinkedDeque
  • Converting Immutable to mutable list Java
  • Getting nosuchmethod exception
  • Android Google Sign in Exceptions
  • JavaFX - method that waits for user input
  • Replacing values for a particular key in treemap changes values for every key
  • This method call passes a null value for a nonnull method parameter. Either the parameter is annotated as a parameter th
  • Kafka: consume all messages on demand
  • Notify what text was changed in textview
  • Tinkerpop/Gremlin: select vertices together with outgoing edge count
  • transform a list of objects into a list of integers that pass a check
  • Why this java code is showing strange behavior?
  • Maven Project classes not compiling
  • Edit image to make text more clear opencv
  • Android Spinner nullpointer
  • Add result to int array every time you finish counting the occurrence
  • Android import java library
  • How to use LDAP Authentication in a corporate environment
  • adding item during iteration in java special usecase
  • How can I sort a map with string key? like (1 foo , 2 foo)
  • shadow
    Privacy Policy - Terms - Contact Us © bighow.org