Sample
Resolve io() URL pathnames as namespaces rather than HTTP paths, multiplex distinct namespaces over a shared Manager and transport, isolate namespace disconnections, and transmit auth payloads within packet 40 rather than HTTP handshake headers
sha256:cab9ce700b45a56b1027f2a67ee185a70fe74b723e406a4ca91485c3305fe447
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Case
- Goal
- Resolve io() URL pathnames as namespaces rather than HTTP paths, multiplex distinct namespaces over a shared Manager and transport, isolate namespace disconnections, and transmit auth payloads within packet 40 rather than HTTP handshake headers HOW
- Packages
- socket.io-client 4.8.3
- Environment
- node
- Created
- 2026-08-16T12:14:12Z
Commonly assumed
Passing a URL pathname to io() sets the HTTP request path on the server and opens an independent transport connection per namespace, while auth options are sent in HTTP handshake headers or query parameters.
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- assert io() parses URL pathname as socket namespace and routes HTTP requests to /socket.io/ rather than URL path unless path option is explicitly set
- assert io() calls sharing the same origin reuse a single Manager instance and underlying transport connection unless forceNew is true
- assert disconnecting one multiplexed namespace leaves sibling namespaces and the underlying Manager transport connection open
- assert auth option is transmitted inside Socket.IO packet 40 payload rather than HTTP handshake query parameters or headers
- assert socket.emit returns the socket instance for chaining while socket.timeout on a disconnected socket begins immediately and rejects with operation has timed out
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs
Download the verified artifact (tar.gz) — the exact bytes the contract ran against
Origin Seeder
Verification receipts
- node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-16 · ed25519:d91480838ac982c9