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Hi.
I'm getting an exception using thoonk with publish/subscribe. I'm using FreeBSD, Python 2.6.7 and redis 2.2.11.
What am I doing wrong? Thanks!
```
$ pip freeze | grep redis
hiredis==0.1.0
redis=…
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Allow UI to subscribe to events created by a tracker/several trackers. UI then gets updates when those trackers create events.
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I'm trying the following:
subscribe to a topic
by paylod make a query to a database
publish to another topic.
`
mqtt = new Bluerhinos\phpMQTT($server, $port, $client_id);
if(!$mqtt->connec…
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## link
* [设计模式 - js 发布订阅模式](https://juejin.cn/post/7063480029694394405)
* [JavaScript设计模式之发布-订阅模式](https://juejin.cn/post/7167987075344990238)
* [观察者模式 vs 发布订阅模式](https://juejin.cn/post/6978728619…
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> In ROS 2, the DDS layer serves as the communication backbone, enabling various nodes to publish and subscribe to topics, send and receive messages, and coordinate their actions. ROS 2 uses DDS imple…
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Dear Support Team,
I have installed the D435 RealSense ROS Wrapper and it works well (using .udo apt-get install ros-noetic-realsense2-camera).
Also, I have installed RTABMap using sudo apt-get inst…
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Hello,
I'm just digging into Mercure.
I've set up the docker image and also a Symfony Service to publish a topic update.
My docker config looks like that:
```YAML
mercure:
image: dung…
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the `test_client_publish_retain_subscribe` test in `tests/test_broker.py` fail.
The `QOS_0` message send during the test does not arrive.
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Hiya Tuan,
Awesome work!
I was playing with your demo code, all just fine. Then I noticed that calling a publish shortly after a subscribe seems to prevent a publish from within the subscribe callb…