fix(proxy): Handles CORS preflight OPTIONS

[yanziz-nvidia]

Summary by CodeRabbit

• Bug Fixes
  • Enhanced CORS (Cross-Origin Resource Sharing) support by improving the handling of OPTIONS preflight requests, enabling better cross-origin request compatibility.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Run ID: d3e579e5-3f07-4b79-a770-243d32485ecd

📥 Commits

Reviewing files that changed from the base of the PR and between 47c119f and 3c49d44.

📒 Files selected for processing (1)

• src/core/cloudxr/python/wss.py

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📝 Walkthrough

Walkthrough

The change adds a monkey-patch function that intercepts ValueError exceptions from the websockets library's HTTP request parser when handling OPTIONS requests. The function parses the HTTP headers and returns a synthetic Request object with a special path ("/__cors_preflight__") instead of allowing the exception to propagate. This patch is activated at module import time, allowing the existing CORS response logic to handle preflight requests that would otherwise cause parser failures.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: implementing a solution to handle CORS preflight OPTIONS requests in the WebSocket proxy.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch yanziz/fix-websocket-rejection-options

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[blongs-nv]

LGTM modulo testing