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6 votes

Which services/resources discovery protocols or mechanisms are mainly used in IoT solutions (Amazon IoT/Eclipse IoT)?

You question isn't very clear. AWS IoT uses MQTT. If you squint, it's a centralized service. But it's actually a federation of many servers that create a pub-sub architecture. The AWS service adds a ...
BraveNewCurrency's user avatar
4 votes
Accepted

How can I get access to a public MQTT broker's (like iot.eclipse.org) logs?

Subscribing to $SYS/# topic will provide some information about the broker and maybe about the clients. Detailed description of these items can be found here. There are three main categories to ...
Bence Kaulics's user avatar
4 votes
Accepted

How to extract values of multiple topics in onMessageArrived(message) function of Paho MQTT JavaScript API?

onMessageArrived will be called separately for each message that arrives so if the payload only contains one value then you will only be able to get one value at a time. You need to include a if ...
hardillb's user avatar
  • 12.6k
3 votes
Accepted

Eclipse solutions without a gateway

If your node devices already speak IP protocols, have a reasonable amount of volatile and non-volatile storage, and have an outgoing network connection they should be able to connect directly with an ...
1 vote
Accepted

Eclipse broker publishes off on subscribe

Without seeing your code so we know what topics you are subscribed to this is really hard to answer. But, yes this is a totally public broker with a single shared topic space for all users. So it is ...
hardillb's user avatar
  • 12.6k
1 vote

How to extract values of multiple topics in onMessageArrived(message) function of Paho MQTT JavaScript API?

i found different solution to this in python client.py class Messages(threading.Thread): def __init__( self, clientname, broker="127.0.0.1", pub_topic=&...
drascom's user avatar
  • 11

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