Paho is an Eclipse project has been created to provide scalable open-source implementations of open and standard messaging protocols like MQTT aimed at new, exisiting, and emerging applications for Machine-to-Machine (M2M) and Internet of Things (IoT).
Questions tagged [paho]
1173 questions
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Paho-Mqtt Periodic Publications approaches
What is the best way to publish safely data periodically ?
First approach:
while(true){
Thread.sleep(1000);
//pub
}
second:
Timer timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
@Override
…
Sadik Hasan
- 173
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- 18
0
votes
1 answer
Paho MQTT Client Publication / Disconnect Sequence
I am confused by the programming model of mqtt.
My goal is to deploy a client that periodically retrieves sensor data
and publish them on a topic via mqtt paho client.
In the code-examples from paho after every publication they disconnects, but i…
Sadik Hasan
- 173
- 3
- 18
0
votes
1 answer
Slow or no response from read pickle file
I'm working on a project that contain a webserver that handle "time" and "traffic light" parameter and save it to a pickle file and another script load the pickle and use it for mqtt client
import pickle
import paho.mqtt.client as mqtt
from datetime…
Mohammed Mazooz
- 15
- 5
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votes
1 answer
cordova mqtt app not working on multiple mobile
I have a paho based sub running on raspberry pi that listens a cloudmqtt broker with username and password.
I forward the message to the bluetooth socket.
Using a cordova app I publish messages "0" or "1". It works fine. But the problem arises when…
Anuj
- 149
- 2
- 11
0
votes
1 answer
mqtt client resets microcontroller after receving few subscriptions from an infinite publish loop
I am trying to implement an MQTT subscription client in a microcontroller using the eclipse paho mqttPacket library.
The mcu resets in the middle while receiving subscribed topics.
I am running a infinite loop delayed by 1 sec for publishing using…
jagadeesh
- 11
- 1
- 5
0
votes
3 answers
return data on_message in python paho mqtt
I am implementing a paho mqtt client. Here is my code:
import paho.mqtt.client as mqtt
def mess(client, userdata, message):
print("{'" + str(message.payload) + "', " + str(message.topic) + "}")
def subscribe(c_id, topic, server, port):
cl…
Viraj Jagale
- 64
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- 11
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votes
1 answer
Rabbitmq not connecting from Paho js client
Here is my paho javascript client code
client = new Paho.MQTT.Client(host, Number(port), clientId);
client.onMessageArrived = onMessageArrived;
client.onMessageDelivered = onMessageDelivered;
client.onConnectionLost = onConnectionLost;…
Manish Kumar
- 10,214
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- 147
0
votes
1 answer
MQTT Java can't send more than once
The problem is, when the client sends it's first message after getting a message, it can no longer receive and reply with a message.
Here is the code:
public void demo() {
try {
client = new MqttClient("tcp://broker:1883", "Sending");
…
Yan
- 582
- 2
- 6
- 22
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0 answers
Message exchange between Paho java & javascript client not happening
How can I send a message from paho java client to paho javascript client.
String topic = "chatWith/904";
String content = "Message from MqttPublishSample";
int qos = 0;
String broker =…
Manish Kumar
- 10,214
- 25
- 77
- 147
0
votes
0 answers
the topic name must not contain any wildcard characters # + mqttv3-1.0.2
i am using eclipse.paho.client.mqttv3-1.0.2.jar to subscribe and publish data
i need to subscribe to multiple level of topics, according to http://mosquitto.org/man/mqtt-7.html we can use some wildcard option to subscribe all remaining levels of…
Rawat
- 461
- 3
- 6
- 23
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votes
1 answer
MQTT broker connection management
I'm using Paho to communicate with an MQTT broker and all the example I found (like this) do these 3 steps when performing an action (publish or subscribe):
connect to the broker
do action
disconnect
My question is: are there any drawbacks holding…
Marco Stramezzi
- 2,143
- 4
- 17
- 37
0
votes
3 answers
trying to show mqtt message as toast
Hi I am trying to get the message from mqtt broker as a toast, but I keep getting an error for the Toast (red underline in the code), could someone please let me know how to amend this?
here is the code
import…
user6248190
- 1,233
- 2
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- 31
0
votes
1 answer
Connection with Mqtt using Kii Cloud Service
I have tried to establish a MQTT connection from the browser by using Kii Cloud service, but it failed.
Would you please any advise ?
[Event]
I have tried to establish a connection by using the end-point which I got from the Kii Cloud MQTT, but…
m_matsui
- 1
- 1
0
votes
2 answers
mqtt paho network loop unnecessary?
I have seen a number of examples of paho clients reading sensor data then publishing, e.g., https://github.com/jamesmoulding/motion-sensor/blob/master/open.py. None that I have seen have started a network loop as suggested in…
fickas
- 97
- 4
0
votes
1 answer
Creating an Android NativeScript plugin
I'm trying to create a plugin that allows a NativeScript application to connect to an MQTT server. When I try to run the application I get the following error in my application:
java.lang.RuntimeException: Unable to start activity
…
MorneZaayman
- 25
- 4