element-hq / element-hq/synapse
repeatedly calling /_matrix/client/r0/keys/upload DoSes federation
Open
A-Device-List-Tracking
P4
S-Minor
Security
T-Defect
- Dominant language
- Python
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Description
This issue has been migrated from [#3657](https://github.com/matrix-org/synapse/issues/3657).
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A client seemed to be uploading new device keys several times a second; this led to a big backlog of stuff to send over federation, and the federation sender got behind
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