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RSSCloudflare
- Severity
- Critical
- Published
- 5 days agoApr 21, 2026
- Signal
- 70
Workers - WebSocket binary messages now delivered as Blob by default
Binary frames received on a WebSocket are now delivered to the message event as Blob objects by default. This matches the WebSocket specification and standard browser behavior. Previously, binary frames were always delivered as ArrayBuffer…
Official source entry
Workers - WebSocket binary messages now delivered as Blob by default
From Cloudflare Changelog. The simplified record can be checked against the original wording.
Why it matters
Cloudflare updated cloudflare changelog semantics for edge-compute and hosting. Review the official entry before the next deploy.
Who should care
- frontend
- infra
- product
Affected stack
- edge-compute
- hosting
- networking
- deployments
Categories
breakinginfra