サンプル

Configure Plug.Session cookie storage, signing salts, 64-byte secret key constraints, and lazy cookie serialization

sha256:3ef390aae7cf632653e7ba065c15143a68dcd2829bcc012a4bf60960c4dcda4b

ケース

ゴール

Configure Plug.Session cookie storage, signing salts, 64-byte secret key constraints, and lazy cookie serialization HOW

パッケージ

plug 1.20.3

環境

elixir

作成日

2026-08-17T10:30:17Z

よくある思い込み

Plug.Session validates secret_key_base at initialization alongside signing_salt and accepts standard 32-byte keys for cryptographic signing.

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

• assert Plug.Session.init/1 enforces :signing_salt for cookie storage at initialization but defers :secret_key_base validation until runtime, where omitting it or providing fewer than 64 bytes raises ArgumentError only when fetching or writing cookies
• assert calling get_session/2 before fetch_session/2 raises ArgumentError stating the session is not fetched
• assert read-only session inspection never emits a set-cookie response header, while session mutations register a before_send callback to emit signed cookie headers with HttpOnly and path=/
• assert tampered or forged incoming cookie signatures are silently dropped with an empty session map rather than raising a runtime decoding error
• assert configuring :encryption_salt upgrades session payload handling from base64-encoded signed plaintext to AES-GCM ciphertext
• assert configure_session(conn, drop: true) on an active session emits a set-cookie header with max-age=0 to expire the cookie on the client

ファイル

• NOTES.md
• csx.json
• lib/csx_plug_session/session_pipeline.ex
• mix.exs
• mix.lock
• test/contract_test.exs
• test/test_helper.exs

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

• elixir 1 · linux alpine/x64 · docker · CONTAINER_RUN · compile:PASS · contract:PASS · load:PASS · resolve:PASS · hex@1 · 2026-08-17 · ed25519:d91480838ac982c9