The Signal messenger and protocol.

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Signal's finally getting desktop history sync! (community.signalusers.org)

submitted 1 month ago by [email protected] to c/[email protected]

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[–] avidamoeba 6 points 1 month ago

It's probably not sent P2P. It's probably sent via their server as relay. If they pushed media from the sender device to the receiver, they'd have to reupload all that which could be a lot of traffic which costs, so they just relay the media they already have and only reupload the text. That's my hypothesis.

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