feat(server): tcp fast open on direct outbounds #1258
Conversation
This file contains 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
tfo-go caches the "unsupported" status when fallback mode is enabled. In other words, if the hysteria server is started with net.ipv4.tcp_fastopen=0 and it fails once, the tfo will not be enabled until it is restarted, even if the user later sets sysctl net.ipv4.tcp_fastopen=3.
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Outdated suggestions cannot be applied.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.
close: #1255
Note
This option effectively breaks proxy semantics just like
sniffand client-sidefastOpen. All proxy requests will be accepted immediately without checking whether the target is reachable or not.For the best effect of this option, the client-side
fastOpenoption should also be enabled.When used on a Linux server, the following sysctl is required:
Please also have a look on the upstream notes related to Windows and Go 1.23: https://github.com/database64128/tfo-go?tab=readme-ov-file#windows-support-with-go-123-and-later
Personally, I'd recommend putting this option in the our Performance document, rather than encouraging every user to enable it.