## Linear Ticket
https://linear.app/chatwoot/issue/CW-6707/socketresolutionerror-failed-to-open-tcp-connection-to-permanentlyhttps://linear.app/chatwoot/issue/CW-6707/socketresolutionerror-failed-to-open-tcp-connection-to-permanently#comment-14e0f9ff
## Description
Browser push notifications fail with Socket::ResolutionError when the
push subscription endpoint's domain can't be resolved via DNS (e.g.,
defunct push service, transient DNS failure). This error wasn't handled
in handle_browser_push_error, so it fell through to the catch-all else
branch and got reported to Sentry on every notification attempt — 1,637
times in the last 7 days.
The dead subscription was never cleaned up or the error suppressed, so
every subsequent notification for the affected user triggered the same
Sentry alert.
Added Socket::ResolutionError to the existing transient network error
handler alongside Errno::ECONNRESET, Net::OpenTimeout, and
Net::ReadTimeout. The error is logged but not reported to Sentry, and
the subscription is kept intact in case it's a temporary DNS blip.
## Type of change
- [ ] Bug fix (non-breaking change which fixes an issue)
## How Has This Been Tested?
- Verified that Socket::ResolutionError is a subclass of StandardError
and matches the when clause
## Checklist:
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules
Co-authored-by: Vishnu Narayanan <iamwishnu@gmail.com>
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