0.11.x backport | quinn-proto: drop Initials silently when saturated#2688
Merged
Conversation
When the `max_incoming` queue is full (or CIDs are exhausted), quinn replied to each Initial with CONNECTION_REFUSED. Building that reply derives the packet's initial keys, which is computationally expensive. A flood of Initials then forces the endpoint's packet-processing task to do per-Initial crypto work, leaving it less time for legitimate packets and degrading already-established connections.
stablebits
changed the title
djc
approved these changes
Jun 15, 2026
Contributor
Author
|
Could you please release new 0.11.x quinn and quinn-proto releases? |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
When the
max_incomingqueue is full (or CIDs are exhausted), quinn replied to each Initial with CONNECTION_REFUSED. Building that reply derives the packet's initial keys, which is computationally expensive. A flood of Initials then forces the endpoint's packet-processing task to do per-Initial crypto work, leaving it less time for legitimate packets and degrading already-established connections.