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34 lines
1.6 KiB
Plaintext
34 lines
1.6 KiB
Plaintext
sequenceDiagram
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participant M as N existing<br>members
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participant A as Alice
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participant B as Bob
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participant C as Existing<br>contact
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note over A, B: 1. send and accept group invitation
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A ->> B: x.grp.inv<br>invite Bob to group<br>(via contact connection)
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B ->> A: x.grp.acpt<br>accept invitation<br>(via member connection)<br>establish group member connection
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note over M, B: 2. introduce new member Bob to all existing members
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A ->> M: x.grp.mem.new<br>"announce" Bob<br>to existing members<br>(via member connections)
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loop batched
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A ->> B: x.grp.mem.intro * N<br>"introduce" members and<br>their chat protocol versions<br>(via member connection)
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note over B: prepare group member connections
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opt chat protocol compatible version < 2
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note over B: prepare direct connections
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end
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B ->> A: x.grp.mem.inv * N<br>"invitations" to connect<br>for all members<br>(via member connection)
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end
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A ->> M: x.grp.mem.fwd<br>forward "invitations" and<br>Bob's chat protocol version<br>to all members<br>(via member connections)
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note over M, B: 3. establish direct and group member connections
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M ->> B: establish group member connection
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opt chat protocol compatible version < 2
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M ->> B: establish direct connection
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note over M, C: 4. deduplicate new contact
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B ->> M: x.info.probe<br>"probe" is sent to all new members
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B ->> C: x.info.probe.check<br>"probe" hash,<br>in case contact and<br>member profiles match
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C ->> B: x.info.probe.ok<br> original "probe",<br> in case contact and member<br>are the same user
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note over B: merge existing and new contacts if received and sent probe hashes match
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end
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