CodeSampleX

Sample

ws 8.18.0: Prove that WebSocketServer in noServer mode requires an explicit callback to emit the connection event and enforces mutually exclusive server binding options

Verified sample for npm ws 8.18.0: Prove that WebSocketServer in noServer mode requires an explicit callback to emit the connection event and enforces…

sha256:1bbc5ebf0baf145241c54a6e82f53217d1dc077a446e9f041f9fb300dbcdd268

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
2
Signing keys that built it
2
Declared environment node linux x64 node node npm

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-17
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-18

Case

HOW
Goal
Prove that WebSocketServer in noServer mode requires an explicit callback to emit the connection event and enforces mutually exclusive server binding options
Packages
Symbols
  • WebSocketServer
  • WebSocketServer.prototype.handleUpgrade
  • WebSocketServer.prototype.shouldHandle
Environment
node
Created
2026-08-17T14:58:06Z

Contract

  1. WebSocketServer.prototype.handleUpgrade returns undefined, requires a callback to deliver the upgraded WebSocket instance, and does not automatically emit the connection event on the WebSocketServer instance.
  2. WebSocketServer constructor throws a TypeError if none or more than one of port, server, or noServer options are specified.
  3. WebSocketServer in noServer mode tracks connected sockets in wss.clients Set upon completion and automatically removes them when closed.
  4. WebSocketServer.prototype.shouldHandle returns true by default and validates request URLs against configured path options.

Files

  • NOTES.md
  • csx.json
  • package-lock.json
  • package.json
  • test/contract.mjs

Download the source artifact (tar.gz)

Origin Seeder

csx-seed