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GitHub runner cannot send fetch
with node
, failing with IPv6 DNS error UND_ERR_CONNECT_TIMEOUT
#3213
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bug
Something isn't working
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undergroundwires
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to undergroundwires/privacy.sexy
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this issue
Mar 29, 2024
This commit introduces the `force-ipv4` GitHub action to address connectivity issues caused by the lack of IPv6 support in GitHub runners. Details: - actions/runner#3138 - actions/runner-images#668 This change solves connection problems when Node's `fetch` API fails due to `UND_ERR_CONNECT_TIMEOUT` errors. Details: - actions/runner-images#9540 - actions/runner#3213 This action disables IPv6 at the system level, ensuring all outging requests use IPv4. Resolving connectivity issues when running external URL checks and Docker build checks. This solution is a temporary workaround until GitHub runners support IPv6 or Node `fetch` API has a working solution such as Happy Eyeball. Detais: - nodejs/node#41625 - nodejs/undici#1531
Here's my workaround (open-source and documented) that I hope that can help you too:
After days of research and trial/error, this is how I got this working:
Related commit introducing this fix: undergroundwires/privacy.sexy@52fadcd |
undergroundwires
added a commit
to undergroundwires/privacy.sexy
that referenced
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Mar 30, 2024
This commit upgrades Node.js version to v20.x in CI/CD environment. Previously used Node 18.x is moving towards end-of-life, with a planned date of 2025-04-30. In contrast, Node 20.x has been offering long-term support (LTS) since 2023-10-24. This makes Node 20.x a stable and recommended version for production environments. This commit also configures `actions/setup-node` with the `check-latest` flag to always use the latest Node 20.x version, keeping CI/CD setup up-to-date with minimal maintenance. Details: - actions/setup-node#165 - actions/setup-node#160 Using Node 20.x in CI/CD environments provides better compatibility with Electron v29.0 which moves to Node 20.x. Details: - electron/electron#40343 This upgrade improves network connection handling in CI/CD pipelines (where issues occur due to GitHub runners not supporting IPv6). Details: - actions/runner#3138 - actions/runner-images#668 - actions/runner#3213 - actions/runner-images#9540 Node 20.x adopts the Happy Eyeballs algorithm for improved IPv6 connectivity. - nodejs/node#40702 - nodejs/node#41625 - nodejs/node#44731 This mitigates issues like `UND_ERR_CONNECT_TIMEOUT` and localhost DNS resolution in CI/CD environments: Details: - nodejs/node#40537 - actions/runner#3213 - actions/runner-images#9540 Node 20 introduces `setDefaultAutoSelectFamily`, a global function from Node 19.4.0, enabling better IPv4 support, especially in environments with limited or problematic IPv6 support. Details: - nodejs/node#45777 Node 20.x defaults to the new `autoSelectFamily`, improving network connection reliability in GitHub runners lacking full IPv6 support. Details: - nodejs/node#46790
undergroundwires
added a commit
to undergroundwires/privacy.sexy
that referenced
this issue
Mar 30, 2024
This commit upgrades Node.js version to v20.x in CI/CD environment. Previously used Node 18.x is moving towards end-of-life, with a planned date of 2025-04-30. In contrast, Node 20.x has been offering long-term support (LTS) since 2023-10-24. This makes Node 20.x a stable and recommended version for production environments. This commit also configures `actions/setup-node` with the `check-latest` flag to always use the latest Node 20.x version, keeping CI/CD setup up-to-date with minimal maintenance. Details: - actions/setup-node#165 - actions/setup-node#160 Using Node 20.x in CI/CD environments provides better compatibility with Electron v29.0 which moves to Node 20.x. Details: - electron/electron#40343 This upgrade improves network connection handling in CI/CD pipelines (where issues occur due to GitHub runners not supporting IPv6). Details: - actions/runner#3138 - actions/runner-images#668 - actions/runner#3213 - actions/runner-images#9540 Node 20.x adopts the Happy Eyeballs algorithm for improved IPv6 connectivity. - nodejs/node#40702 - nodejs/node#41625 - nodejs/node#44731 This mitigates issues like `UND_ERR_CONNECT_TIMEOUT` and localhost DNS resolution in CI/CD environments: Details: - nodejs/node#40537 - actions/runner#3213 - actions/runner-images#9540 Node 20 introduces `setDefaultAutoSelectFamily`, a global function from Node 19.4.0, enabling better IPv4 support, especially in environments with limited or problematic IPv6 support. Details: - nodejs/node#45777 Node 20.x defaults to the new `autoSelectFamily`, improving network connection reliability in GitHub runners lacking full IPv6 support. Details: - nodejs/node#46790
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Describe the bug
Sending more than one (sometimes two or three) requests using
fetch
results in DNS errors.To Reproduce
I created a repository to reproduce this in as minimal way as possible:
https://github.com/undergroundwires/node-fetch-ipv6
I run fetch on using vite test runner on node and without any test runner. I get same results.
I realize that the first two requests are successful, I start getting the error after the second or third one.
See the test: test file
Second test (multiple fetch in order) fails, and all run fine locally. I run tests on default GitHub runners using both latest node 20 and 18. I get same errors:
Expected behavior
The requests are being sent fine, this was the case before.
Runner Version and Platform
The job runs on
ubuntu-latest
, see the repository linked in To Reproduce section above.What's not working?
I get
![image](https://private-user-images.githubusercontent.com/15555035/314470907-fbfa2ad9-d913-491b-b365-36ce30d650de.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.lI6wK5hQWb5gp2iWWUh_gkLT2THtpmjFbQASJUbDcf4)
UND_ERR_CONNECT_TIMEOUT
errors which is related to IPv6 issues in node.Related issue for node: nodejs/node#41625,
Related issue for node fetch: nodejs/undic#1531
Related issue for GitHub runners not being able to do IPv6: actions/runner-images#668, #3138
Job Log Output
The text was updated successfully, but these errors were encountered: