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Flutter WebSockets with Example
In Flutter, you can use WebSockets to enable real-time communication between a client (the Flutter app) and a server. WebSockets allow for bidirectional, low-latency communication and are commonly used for real-time messaging, notifications, and live updates.
Here's an example of how to use WebSockets in Flutter
Import the web_socket_channel package in your pubspec.yaml file
dependencies:
flutter:
sdk: flutter
web_socket_channel: ^2.1.0
Create a WebSocket connection to your server in your Flutter app
import 'package:flutter/material.dart';
import 'package:web_socket_channel/io.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
final channel = IOWebSocketChannel.connect('wss://example.com/ws');
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter WebSocket Example',
home: Scaffold(
appBar: AppBar(
title: Text('Flutter WebSocket Example'),
),
body: StreamBuilder(
stream: channel.stream,
builder: (context, snapshot) {
if (snapshot.hasData) {
return Center(
child: Text(snapshot.data),
);
} else {
return Center(
child: CircularProgressIndicator(),
);
}
},
),
),
);
}
}
In this example, we are creating a WebSocket connection to a server using the IOWebSocketChannel class. We are then displaying the data received from the server in a Text widget using a StreamBuilder.
Send data to the server using the sink property of the WebSocket channel
channel.sink.add('Hello, server!');
In this example, we are sending the message "Hello, server!" to the server.
Close the WebSocket connection when it's no longer needed
channel.sink.close();
In this example, we are closing the WebSocket connection.
Run your app and test the WebSocket connection
flutter runThis is just a basic example of how to use WebSockets in Flutter. You can customize the WebSocket connection to fit your app's specific needs, including authentication and encryption.