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ws: public client/server fixture receives unexpected HTTP 426 response #10888
Description
Summary
A clean public-entry ws@8.21.1 client/server fixture compiles on current main (47ade47327) but the client fails with:
Error: Unexpected server response: 426
This is the current ws blocker found while re-testing #10797. The issue's original post-handshake Cannot read properties of undefined (reading 'destroy') failure does not reproduce.
Reproduction shape
- Install
ws@8.21.1. - Add
wstoperry.compilePackages. - Import
{ WebSocketServer, WebSocket }from the publicwsentry point. - Start a local
WebSocketServerand connect to it with a publicWebSocketclient. - Compile and run with Perry.
No partial-codegen flag or internal package import is used.
Expected
The local WebSocket upgrade succeeds and the server emits its connection event, as under Node.
Actual
The client reports HTTP 426 instead of completing the WebSocket upgrade.
Provenance
Split from #10797 after re-establishing the package probe through its normal public entry point. See the re-test details.
Activity
fix(http): preserve upgrades over custom connections (#10888)
proggeramlug commentedon Sep 21, 2026
Fixed in v0.5.1633 (merge train 253,
0fa3915293) by #10899 —fix(http): preserve upgrades over custom connections.An HTTP upgrade request using a custom
createConnectionsocket lostConnection: Upgrade, so thewshandshake saw an ordinary request and the server answered426 Upgrade Required. Perry now preserves the upgrade and emits the request'supgradeevent.Verified by running
crates/perry/tests/issue_10888_create_connection_upgrade.rsagainst the landed tree: 2 passed, 0 failed.