element-hq / element-hq/synapse
Appservices are not queried for users during profile requests
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A-Application-Service
T-Enhancement
- Dominant language
- Python
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Description
This issue has been migrated from [#4310](https://github.com/matrix-org/synapse/issues/4310).
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Related: #4143
When Synapse receives an event that is directed at/sent by an appservice user, it ensures the appservice has registered the user by hitting the `/users` appservice API. This check is not done during profile requests, however. This means that when clients try and do profile lookups before invites (such as in the case of riot: https://github.com/vector-im/riot-web/issues/7922), they might not bother with the invite because the user doesn't exist.
TLDR: Synapse should be hitting an appservice's `/users` endpoint during profile lookup requests too.
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