replace httpUrlConnection with HttpClient on RemoteHttpComponent

[robfrank]

What does this PR do?

Replaces httpUrlConnection with Java HttpClient that supports http2 ootb

Motivation

Migratont of httpServer to http2

Related issues

#1493

Checklist

• I have run the build using mvn clean package command
• My unit tests cover both failure and success scenarios

[robfrank]

@ExtReMLapin I updated the remote client too

[ExtReMLapin]

I left the office but from memory, when switching from python request lib + HTTP/1.1 to python httpx + HTTP/2

We went from a 9s request to 6s when doing a spam of simple select 1 queries

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.23%	✅ 68.02%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (c48733a)	69732	44845	64.31%
Head commit (792445f)	69775 (+43)	44709 (-136)	64.08% (-0.23%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#2123)	197	134	68.02%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[lvca]

We went from a 9s request to 6s when doing a spam of simple select 1 queries

That's a big improvement! @robfrank do you already have some numbers from your tests?

[Copilot]

Pull Request Overview

This PR replaces the legacy HttpURLConnection usage with Java HttpClient to provide native HTTP/2 support and modernizes remote server interactions. Key changes include updating server communication logic, refactoring the exception handling to work with HttpResponse, and adding placeholder tests for HttpClient-based interactions.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
server/src/main/java/com/arcadedb/server/http/HttpSession.java	Added detailed logging for session execution.
server/src/main/java/com/arcadedb/server/http/HttpServer.java	Updated server bootstrapping and logging with HttpClient integration.
network/src/test/java/com/arcadedb/remote/RemoteServerHttpIT.java	Replaced HttpURLConnection tests with HttpClient stub tests.
network/src/test/java/com/arcadedb/remote/RemoteDatabaseHttpIT.java	Added stub tests to demonstrate new HttpClient API usage.
network/src/main/java/com/arcadedb/remote/RemoteServer.java	Migrated drop and createUser methods to use HttpClient.
network/src/main/java/com/arcadedb/remote/RemoteHttpComponent.java	Refactored HTTP command execution and exception management.
network/src/main/java/com/arcadedb/remote/RemoteDatabase.java	Updated transaction methods to use HttpClient instead of HttpURLConnection.
e2e/src/test/java/com/arcadedb/e2e/RemoteDatabaseJavaApiTest.java	Added a disabled performance test for multiple inserts.
e2e/src/test/java/com/arcadedb/e2e/JdbcQueriesTest.java	Added a disabled long-running test for multiple inserts via JDBC.

Comments suppressed due to low confidence (5)

network/src/test/java/com/arcadedb/remote/RemoteServerHttpIT.java:12

• [nitpick] Placeholder tests for HttpClient integration are present; consider adding comprehensive tests to validate the new HTTP client behavior.

public class RemoteServerHttpIT {

network/src/main/java/com/arcadedb/remote/RemoteHttpComponent.java:504

• [nitpick] Consider extracting HTTP status code descriptions into named constants to improve clarity and maintainability.

final String httpErrorDescription = response.statusCode() == 400 ? "Bad Request" :

e2e/src/test/java/com/arcadedb/e2e/RemoteDatabaseJavaApiTest.java:124

• [nitpick] The 'testMultipleInsert' test is disabled; consider adding a comment explaining its purpose or conditions for re-enabling it in the CI pipeline.

@Disabled

e2e/src/test/java/com/arcadedb/e2e/JdbcQueriesTest.java:256

• [nitpick] The 'testMultipleInsert' test is disabled; if it's meant for performance testing, consider isolating it from regular test runs and documenting its role.

@Disabled

network/src/main/java/com/arcadedb/remote/RemoteDatabase.java:249

• If the session ID header is absent, passing null may lead to later issues; verify that this scenario is handled appropriately or add an explicit check.

setSessionId(response.headers().firstValue(ARCADEDB_SESSION_ID).orElse(null));