CodeSampleX

Sample

verify engine.io-client WebSocket transport and binary packet transmission

sha256:cea5c5cc104234f8e35a687e872f2b3132b03ae0f969b74f462283182e397926

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…		 2026-08-27

Case

HOW
Goal
verify engine.io-client WebSocket transport and binary packet transmission
Packages
Symbols
  • WebSocket
  • transports.websocket
Environment
node 22.23.2
Created
2026-08-27T14:18:05Z

Contract

  1. WebSocket transport class is exported and inherits from Transport
  2. Socket initializes with direct WebSocket transport configuration without upgrade
  3. Socket connects to WebSocket server and completes handshake establishing open state
  4. Socket sends and receives text message packets over WebSocket transport
  5. Socket sends and receives binary Buffer and ArrayBuffer payloads over WebSocket transport
  6. Socket closes cleanly over WebSocket transport transitioning readyState to closed
  7. Socket emits error and close events when connecting to unreachable WebSocket 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

anonymous