Yes, you need to have open connection to receive messages. | Hacker News

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		zajio1am 68 days ago \| parent \| context \| favorite \| on: Modern messaging: Running your own XMPP server Yes, you need to have open connection to receive messages.

MattJ100 68 days ago [–]

Or push notification support (which is the same, but basically the OS (Android/iOS) is the thing holding an open connection :) )

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