[PR #5174] [client] Refactor/optimise raw socket headers #27282

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saavagebueno · 2026-08-05T07:08:29-04:00

saavagebueno commented

2026-08-05 07:08:29 -04:00

Original Pull Request: https://github.com/netbirdio/netbird/pull/5174

State: closed
Merged: Yes

Describe your changes

Pre-create and reuse packet headers to eliminate per-packet allocations.

Issue ticket number and link

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Checklist

Is it a bug fix
Is a typo/documentation fix
Is a feature enhancement
It is a refactor
Created tests that fail without the change (if possible)

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Documentation

Select exactly one:

I added/updated documentation for this change
Documentation is not needed for this change (explain why)

Docs PR URL (required if "docs added" is checked)

Paste the PR link from https://github.com/netbirdio/docs here:

https://github.com/netbirdio/docs/pull/__

Summary by CodeRabbit

Refactor
- Improved packet header management and per-endpoint header preparation for more reliable UDP packet transmission.
- Enhanced IPv4/IPv6 raw socket selection and packet serialization for more consistent sending behavior.
- Removed legacy packet serialization path, simplifying and streamlining internal transmission flow.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

**Original Pull Request:** https://github.com/netbirdio/netbird/pull/5174 **State:** closed **Merged:** Yes --- ## Describe your changes Pre-create and reuse packet headers to eliminate per-packet allocations. ## Issue ticket number and link ## Stack  ### Checklist - [ ] Is it a bug fix - [ ] Is a typo/documentation fix - [ ] Is a feature enhancement - [x] It is a refactor - [ ] Created tests that fail without the change (if possible) > By submitting this pull request, you confirm that you have read and agree to the terms of the [Contributor License Agreement](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT.md). ## Documentation Select exactly one: - [ ] I added/updated documentation for this change - [x] Documentation is **not needed** for this change (explain why) ### Docs PR URL (required if "docs added" is checked) Paste the PR link from https://github.com/netbirdio/docs here: https://github.com/netbirdio/docs/pull/__  ## Summary by CodeRabbit * **Refactor** * Improved packet header management and per-endpoint header preparation for more reliable UDP packet transmission. * Enhanced IPv4/IPv6 raw socket selection and packet serialization for more consistent sending behavior. * Removed legacy packet serialization path, simplifying and streamlining internal transmission flow. <sub>✏️ Tip: You can customize this high-level summary in your review settings.</sub>

saavagebueno added the pull-request label 2026-08-05 07:08:29 -04:00

saavagebueno closed this issue

2026-08-05 07:08:29 -04:00

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Reference: DYNR/netbird#27282