8000 feat(gateway): add configurable fallback timeout for the gateway handler by acejam · Pull Request #1069 · ipfs/boxo · GitHub
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feat(gateway): add configurable fallback timeout for the gateway handler #1069

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feat(gateway): add configurable fallback timeout for the gateway handler #1069

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@acejam acejam commented Nov 17, 2025

This PR adds a configurable fallback request timeout to the Gateway handler.

  • Introduces fallbackRequestTimeout (default 1h) used in handler.ServeHTTP instead of a hardcoded time.Hour
  • Reads optional env var BOXO_GATEWAY_REQUEST_TIMEOUT at init (Go duration format: "90m", "2h", "5400s")
  • Logs a warning and keeps default if the env value is invalid or non-positive
  • Purpose: prevent long CAR streams or large responses from being truncated at exactly 1 hour due to a hardcoded context deadline

Impact

  • Default behavior remains 1 hour unless BOXO_GATEWAY_REQUEST_TIMEOUT is set
  • Allows deployments to extend or disable (by setting a very large duration) the hard per-request cap independent of RetrievalTimeout

Usage

# Example: raise fallback request timeout to 3 hours
export BOXO_GATEWAY_REQUEST_TIMEOUT="3h"

@acejam acejam requested review from a team and lidel as code owners November 17, 2025 19:33
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codecov bot commented Nov 17, 2025 •
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Codecov Report

❌ Patch coverage is 28.57143% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.20%. Comparing base (e71f50e) to head (6ad03bd).
⚠️ Report is 9 commits behind head on main.

Files with missing lines Patch % Lines
gateway/handler.go 28.57% 4 Missing and 1 partial ⚠️

Impacted file tree graph

@@            Coverage Diff             @@
##             main    #1069      +/-   ##
==========================================
- Coverage   61.25%   61.20%   -0.05%     
==========================================
  Files         268      268              
  Lines       26284    26290       +6     
==========================================
- Hits        16100    16092       -8     
- Misses       8507     8519      +12     
- Partials     1677     1679       +2
Files with missing lines Coverage Δ
gateway/handler.go 77.16% <28.57%> (-0.76%) ⬇️

... and 8 files with indirect coverage changes

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lidel
lidel requested changes Nov 25, 2025
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Allowing users to override or remove 1h timeout here is a sensible feature, but wiring it up needs to be done in Config (see comment below)

CHANGELOG.md

### Added

- `gateway`: Added a configurable fallback timeout for the gateway handler, defaulting to 1 hour, overridable via the BOXO_GATEWAY_REQUEST_TIMEOUT environment variable.
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@acejam The existing gateway configuration uses a boxo/gateway/Config struct with explicit fields (e.g., RetrievalTimeout, MaxConcurrentRequests). Using an environment variable is inconsistent with the established pattern and we can't merge this in this form.

Consider adding MaxRequestDuration to the Config struct instead? This would be consistent with how other timeouts are configured and allows programmatic

@hsanjuan hsanjuan added the need/author-input Needs input from the original author label Nov 25, 2025
gammazero added a commit that referenced this pull request Dec 13, 2025
@gammazero
add configurable fallback timeout for the gateway handler
110dc2d 
Added a configurable fallback timeout for the gateway handler, defaulting to 1 hour. Configurable via `MaxRequestDuration` in the gateway config.

Replaces #1069
@gammazero gammazero mentioned this pull request Dec 13, 2025
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gammazero added a commit that referenced this pull request Dec 13, 2025
@gammazero
add configurable fallback timeout for the gateway handler
8e2e90a 
Added a configurable fallback timeout for the gateway handler, defaulting to 1 hour. Configurable via `MaxRequestDuration` in the gateway config.

Replaces #1069
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gammazero commented Dec 13, 2025

Replaced by #1079

@gammazero gammazero added need/maintainers-input Needs input from the current maintainer(s) and removed need/author-input Needs input from the original author labels Dec 16, 2025
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