Throw TimeoutException instead of OperationCanceledException when RawQueryAsync method times out

[Makaopior]

OperationCanceledException is usually treated like "The underlying operation has been canceled, terminate the upstream too", and that's not what is to be expected from an ordinary timeout. HttpClient has a similar problem too.
Changed behavior so that cancelling the async socket IO operation throws TimeoutException instead of passing cancellation exception through.

[Copilot]

Copilot reviewed 2 out of 4 changed files in this pull request and generated 1 comment.

Files not reviewed (2)

• RELEASE-NOTES.txt: Language not supported
• WhoisClient.NET/WhoisClient.NET.csproj: Language not supported

Comments suppressed due to low confidence (1)

WhoisClient.NET.Test/IrregularCaseTests.cs:131

• [nitpick] Verify that the synchronous RawQuery method is intended to throw an IOException while the asynchronous RawQueryAsync method throws a TimeoutException. If the discrepancy is intentional, consider adding a clarifying comment explaining the rationale.

Assert.ThrowsAsync<IOException>(new AsyncTestDelegate(action));

[Copilot]

[nitpick] Consider including the original OperationCanceledException as the inner exception when throwing the TimeoutException to preserve additional context for debugging.

Suggested change

	catch (OperationCanceledException) when (!token.IsCancellationRequested)
	{
	throw new TimeoutException("Socket operation timeout");
	catch (OperationCanceledException ex) when (!token.IsCancellationRequested)
	{
	throw new TimeoutException("Socket operation timeout", ex);

[jsakamoto]

Hi @Makaopior,
I've released version 6.1.

• https://www.nuget.org/packages/WhoisClient.NET/6.1.0#releasenotes-body-tab

Thank you for your many contributions!

[Makaopior]

Hi @jsakamoto ,
Thanks!