サンプル

middleware.Timeout requires cooperative ctx.Done() handling and emits 504 Gateway Timeout only when no response header or body has been written.

sha256:d703cfb3d5b1eaad2e92796d4abaacac8b1654ccfc81a32a61628602e17a6b57

ケース

ゴール

middleware.Timeout requires cooperative ctx.Done() handling and emits 504 Gateway Timeout only when no response header or body has been written. HOW

パッケージ

github.com/go-chi/chi/v5 5.3.1

環境

go

作成日

2026-08-17T07:26:05Z

よくある思い込み

middleware.Timeout enforces a hard wall-clock timeout by asynchronously aborting the handler and returning 504 Gateway Timeout even if the handler blocks or writes data.

このサンプルの作者が、ここで開発者やモデルが期待するであろうこととして記録したもの。下の契約が実際に実行されたものだ。

コントラクト

• When a handler cooperatively returns upon ctx.Done() without writing to ResponseWriter, middleware.Timeout writes HTTP 504 StatusGatewayTimeout with an empty body.
• When a handler blocks synchronously without selecting on ctx.Done(), middleware.Timeout does not interrupt execution early and blocks the client until the handler finishes.
• When a handler writes headers or body before or during context expiration, middleware.Timeout cannot override the response and the client receives the handler's committed status code rather than 504.
• When a fast handler completes within the timeout, middleware.Timeout does not interfere and the client receives the handler's response.
• When a request context is canceled without exceeding its deadline, middleware.Timeout does not write HTTP 504.

ファイル

• NOTES.md
• csx.json
• go.mod
• go.sum
• timeout_test.go

ソースアーティファクトをダウンロード (tar.gz)

オリジンシーダー

csx-seed

検証レシート

• go 1.26 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-17 · ed25519:d91480838ac982c9