Questions tagged [broker]
389 questions
6
votes
2 answers
Can anyone explain the request-reply broker zeromq example?
I'm refering to the 'A Request-Reply Broker' in the Zeromq documentation: http://zguide.zeromq.org/chapter:all
I'm getting the general gist of the app: it acts like an intermediary and routes messages from the client to the server and back…
Toad
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6
votes
4 answers
MQTT broker windows
I've been trying to set up MQTT broker on windows but with not results. I am not very experience in this topic. I've downloaded the mosquitto files from http://mosquitto.org/download/ but I haven't get the server running. I downloaded the binary…
Fernando
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6
votes
2 answers
RabbitMQ 3.1.3 and the missing timestamp header
Is it possible to configure the broker to insert a timestamp header if it is missing in the message? So if the publishing client does not add the timestamp header, can the broker insert it with a timestamp value matching the moment the message was…
bwfrieds
- 341
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6
votes
2 answers
Set the timeout for a message in ActiveMQ broker?
I want to set the timeout period for the Acknowledge i.e. if the acknowledge is not received by the broker for the particular message from consumer within a time period then, the broker should resend the message to the consumer. Is it possible to…
omkar
- 414
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5
votes
2 answers
how to increase AmazonMQ maximum connections
2019-08-01 06:04:43,263 | ERROR | Could not accept connection :
org.apache.activemq.transport.tcp.ExceededMaximumConnectionsException:
Exceeded the maximum number of allowed client connections. See the
'maximumConnections' property on the TCP…
anshul Gupta
- 1,182
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5
votes
2 answers
Difference between “broker”, “agent“ and “proxy”
What's it responsible when using words “broker”, “agent“ and “proxy” in programming code? Are there any specical meanings in the Computer Technology? Any opinions or examples?
lei li
- 147
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5
votes
0 answers
error on creating spring Embedded kafka instance
This is related to embedded kafka server provided by spring. On running my test case, embedded kafka intantiation (as show below) fails.
public static KafkaEmbedded embeddedKafka = new KafkaEmbedded(1, true, KAFKA_TOPIC);
instantiation fails…
Ani
- 71
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5
votes
2 answers
Issue while forwarding message through an activeMQ network
I'm facing problem whil connecting a network of ActiveMQ.
I have two scenarios :
S1 : My application is connected to a first activeMQ "A". And this activeMQ "A" is connected to an ActiveMQ "B" - This is the scenario which cause me some issues.
S2 :…
Ashbay
- 1,641
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5
votes
3 answers
How to remove a published topic
I am new to MQTT protocol. As I read through the document, I couldn't see any function to remove the published topic. My purpose is to allow the publisher to remove the published topic. Did I miss something in the mqtt document? Any suggestion?…
Sirapat
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5
votes
1 answer
What is a broker, topic, queue
I tried to find details about broker, topic, queue; but couldn't get good results. I tried to Google on these topics but couldn't find much.
Can somebody help explaining these concepts.
thegeek
- 93
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5
votes
0 answers
Unable to use spring.activemq.broker-url from yaml configuration file
I'm trying to inject activemq properties from a yaml configuration file.
i initially used a property file, and it worked pretty well, but with the yaml file, the property spring.activemq.broker-url is apparently ignored by spring-jms, and the…
mab
- 176
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4
votes
1 answer
How to connect a sim800l to a broker with SSL?
I am trying to connect to an a mosquito broker hosted on AWS, on port 8883, but so far I have not been successful.
I am using the TinyGSM and PubSubClient libraries.
The GSM module is connected to the internet and works perfectly in a broker without…
Larissa Santos
- 41
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4
votes
1 answer
Where to set parameters min.insync.replicas and acks in Java?
I need to set two parameters min.insync.replicas and acks. The official documentation says that the parameter min.insync.replicas is the broker's parameter. Do I understand correctly that for all topics it should be specified inside the…
Violetta
- 509
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4
votes
2 answers
"certificate verify failed" when bridging AWS IoT with local Mosquitto MQTT
I have a mosquitto MQTT on a local raspberry pi working like a charm.
I created a MQTT broker on AWS IoT that works as well.
On my raspberry pi I can connect, publish and subscribe on the AWS broker "manually", using the commands mosquitto_pub and…
btech
- 49
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