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send messages opportunistically if a link is not yet established and encryption ratchets are available

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liamcottle 2024-09-20 18:00:49 +12:00
commit dc68c98f4f
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meshchat.py
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@ -2027,8 +2027,17 @@ class ReticulumMeshChat:
# create destination for recipients lxmf delivery address
lxmf_destination = RNS.Destination(destination_identity, RNS.Destination.OUT, RNS.Destination.SINGLE, "lxmf", "delivery")
# send messages over a direct link by default
desired_delivery_method = LXMF.LXMessage.DIRECT
if not self.message_router.delivery_link_available(destination_hash) and RNS.Identity.current_ratchet_id(destination_hash) != None:
# since there's no link established to the destination, it's faster to send opportunistically
# this is because it takes several packets to establish a link, and then we still have to send the message over it
# oppotunistic mode will send the message in a single packet (if the message is small enough, otherwise it falls back to a direct link)
# we will only do this if an encryption ratchet is available, so single packet delivery is more secure
desired_delivery_method = LXMF.LXMessage.OPPORTUNISTIC
# create lxmf message
lxmf_message = LXMF.LXMessage(lxmf_destination, self.local_lxmf_destination, content, desired_method=LXMF.LXMessage.DIRECT)
lxmf_message = LXMF.LXMessage(lxmf_destination, self.local_lxmf_destination, content, desired_method=desired_delivery_method)
lxmf_message.try_propagation_on_fail = self.config.auto_send_failed_messages_to_propagation_node.get()
lxmf_message.fields = {}