pkg/analysis_server/lib/src/handler/legacy/diagnostic_get_server_port.dart

// Copyright (c) 2022, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'dart:async';

import 'package:analysis_server/protocol/protocol.dart';
import 'package:analysis_server/protocol/protocol_generated.dart';
import 'package:analysis_server/src/analysis_server.dart';
import 'package:analysis_server/src/handler/legacy/legacy_handler.dart';
import 'package:analysis_server/src/utilities/progress.dart';

/// The handler for the `diagnostic.getServerPort` request.
class DiagnosticGetServerPortHandler extends LegacyHandler {
  /// Initialize a newly created handler to be able to service requests for the
  /// [server].
  DiagnosticGetServerPortHandler(AnalysisServer server, Request request,
      CancellationToken cancellationToken)
      : super(server, request, cancellationToken);

  @override
  Future<void> handle() async {
    try {
      // Open a port (or return the existing one).
      var port = await server.diagnosticServer!.getServerPort();
      sendResult(DiagnosticGetServerPortResult(port));
    } catch (error) {
      sendResponse(Response.debugPortCouldNotBeOpened(request, error));
    }
  }
}