March 2018
Beginner to intermediate
410 pages
10h 40m
English
Content preview from Mastering Internet of Things
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Understanding concentrators in XMPP
Since a concentrator is a single physical device with a single connection to the network, another form of internal addressing is required to identify which internal device is referenced in a request. In XMPP, the physical device, or the concentrator, has a single XMPP Address, or Jabber ID (JID).
Embedded devices, or logical devices, are called nodes, and they are identified with node identities. Optionally, these nodes can be collected into data sources, if there are many nodes with different functions. For very large concentrators, data sources can optionally be divided into partitions as well. A node identity is unique within the given partition and data source in which it resides. If there are no partitions ...
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