Deny unmasked frame receive for WebSocket Server #123485
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Tagging subscribers to this area: @karelz, @dotnet/ncl |
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Pull request overview
This pull request enhances RFC 6455 compliance for WebSocket servers by adding validation to reject unmasked frames from clients. According to the RFC, clients must mask all frames sent to servers, and servers should reject unmasked frames.
Changes:
- Added validation logic to reject unmasked frames when running as a WebSocket server
- Added a test case to verify the server properly rejects unmasked frames with appropriate error handling
- Added a new resource string for the error message
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| src/libraries/System.Net.WebSockets/src/System/Net/WebSockets/ManagedWebSocket.cs | Adds server-side validation to reject unmasked frames, mirroring the existing client-side check for masked frames |
| src/libraries/System.Net.WebSockets/tests/WebSocketTests.cs | Adds test to verify server rejects unmasked frames and transitions to Aborted state |
| src/libraries/System.Net.WebSockets/src/Resources/Strings.resx | Adds error message resource for unmasked frame rejection |
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Increasing RFC-compliance for WebSocket