CodeSampleX

Sample

verify engine.io-client socket instantiation and configuration options

sha256:29684e0758ca039033e7bc3d2e26c51602bbed9aa161ecd69c44709361098288

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-26

Case

HOW
Goal
verify engine.io-client socket instantiation and configuration options
Packages
Symbols
  • Socket
Environment
node 22.23.2
Created
2026-08-26T14:26:49Z

Contract

  1. Socket exports protocol version 4 and Socket constructor classes
  2. Socket initializes with default options in node environment with readyState opening and binaryType nodebuffer
  3. Socket supports custom options including transport selection, custom path, and timestamp parameters
  4. Socket emits events via inherited emitter methods
  5. Socket establishes connection, completes handshake, and sends packets over polling transport
  6. Socket closes cleanly and transitions readyState to closed
  7. Socket emits error and close events when connecting to unreachable endpoint

Files

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.js
  • test/contract.js

Download the source artifact (tar.gz)

Origin Seeder

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