Repository navigation
Set don't fragment option on IP sockets for QUIC - #152
Merged
Merged
Conversation
Motivation: RFC 9000, Section 14 prohibits fragmentation of UDP datagrams at the IP layer. Modifications: Use new helper function from swift-nio-quic to set the required socket options (Linux, Darwin) on the sockets for H/3 running over QUIC, if the address is either v4 or v6. Results: Less fragmentation.
josephnoir
requested review from
FranzBusch,
aryan-25 and
gjcairo
as code owners
October 21, 2026 14:27
aryan-25
approved these changes
Oct 21, 2026
FranzBusch
approved these changes
Oct 21, 2026
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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Motivation
RFC 9000, Section 14 prohibits fragmentation of UDP datagrams at the IP layer.
Modifications
Use new helper function from swift-nio-quic to set the required socket options (Linux, Darwin) on the sockets for H/3 running over QUIC, if the address is either v4 or v6.
Results
Less fragmentation.