[lxcxjxhx]

Summary

Fix resource leaks in NetUtils by ensuring proper closure of Socket, PrintWriter, and HttpURLConnection resources.

Changes

• simpleRequest(): Add HttpURLConnection.disconnect() in finally block to prevent connection leaks
• requestViaSocket(): Add proper closure of Socket and PrintWriter in finally block to prevent resource leaks

Impact

These resource leaks could lead to:

• Socket/connection exhaustion in long-running applications
• File descriptor leaks when making multiple HTTP requests
• Potential memory leaks in high-throughput scenarios

Testing

Local environment limitations prevent full dynamic testing; relying on CI/CD automated tests for verification.

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I apologize for any inconvenience caused by this PR. I noticed these resource leaks while reviewing the codebase and wanted to contribute fixes. Please let me know if any changes are needed.

[CLAassistant]

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