platform/packages/websocket/lib/io.dart

/// Command-line WebSocket client library for the Angel framework.
library angel_websocket.io;

import 'dart:async';
import 'dart:io';
import 'package:angel_client/angel_client.dart';
import 'package:http/http.dart' as http;
import 'package:http/io_client.dart' as http;
import 'package:web_socket_channel/web_socket_channel.dart';
import 'package:web_socket_channel/io.dart';
import 'base_websocket_client.dart';
export 'package:angel_client/angel_client.dart';
export 'angel_websocket.dart';

final RegExp _straySlashes = new RegExp(r"(^/)|(/+$)");

/// Queries an Angel server via WebSockets.
class WebSockets extends BaseWebSocketClient {
  final List<IoWebSocketsService> _services = [];

  WebSockets(baseUrl,
      {bool reconnectOnClose = true, Duration reconnectInterval})
      : super(new http.IOClient(), baseUrl,
            reconnectOnClose: reconnectOnClose,
            reconnectInterval: reconnectInterval);

  @override
  Stream<String> authenticateViaPopup(String url,
      {String eventName = 'token'}) {
    throw new UnimplementedError(
        'Opening popup windows is not supported in the `dart:io` client.');
  }

  @override
  Future close() {
    for (var service in _services) {
      service.close();
    }

    return super.close();
  }

  @override
  Future<WebSocketChannel> getConnectedWebSocket() async {
    var socket = await WebSocket.connect(websocketUri.toString(),
        headers: authToken?.isNotEmpty == true
            ? {'Authorization': 'Bearer $authToken'}
            : {});
    return new IOWebSocketChannel(socket);
  }

  @override
  IoWebSocketsService<Id, Data> service<Id, Data>(String path,
      {Type type, AngelDeserializer<Data> deserializer}) {
    String uri = path.replaceAll(_straySlashes, '');
    return new IoWebSocketsService<Id, Data>(socket, this, uri, type);
  }
}

class IoWebSocketsService<Id, Data> extends WebSocketsService<Id, Data> {
  final Type type;

  IoWebSocketsService(
      WebSocketChannel socket, WebSockets app, String uri, this.type)
      : super(socket, app, uri);
}