Bernd Fondermann created VYSPER-337:
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Summary: Sequential processing of stanzas per StanzaRelay
Key: VYSPER-337
URL: https://issues.apache.org/jira/browse/VYSPER-337
Project: VYSPER
Issue Type: Improvement
Components: stanza routing
Affects Versions: 0.7
Reporter: Bernd Fondermann
Currently, StanzaRelays typically act as a "stage", in that they queue and
process stanzas.
The most important one probably is DeliveringInternalInboundStanzaRelay.
If multiple stanzas are queued intentionally in a certain sequence (A, B), the
relay's queue ensures that processing of stanzas (i.e. assignment to threads
from the pool) starts in that sequence.
The weak point is that B's processing can finished before A's. This is not a
problem if A is delivered to a different session than B. However, if both, A
and B, are delivered to the same session, the sequence has changed, which may
be unwanted. (Example: A: presence for a MUC room, B: history message for the
same room.)
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