Are there standard techniques/libraries that are used to implement IoT? How does a monitoring-and-control component setup a messaging connection to a monitoring device that might be tethered to a cellular network? Say that I am working in Python but the question also applies to C/C++.
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Your question is quite broad but...
MQTT is the protocol that is widely used in the context that you describe. It has many features like :
- Send messages without or with ACK
- Payload Encryption
- Widely supported in the Open Source world
- There is libraries for many programing languages
And there is many other reasons...
MatsK
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