Working with WebSocket
Learn to use WebSocket in Flutter.
Introduction
There might be cases where we need to implement real-time communication in Flutter—for example, when building a chat or stock trading application. WebSocket offers real-time two-way communication between clients and servers.
The alternative to WebSocket is polling, where instead of delivering messages in real-time to the client, the clients keep checking the server after a time interval. Polling is an option that could work for your application, but this takes a lot of computing resources, especially on mobile, which will drain the device’s battery.
We’ll work on the following app in this lesson:
name: websockets description: A new Flutter application. publish_to: 'none' # Remove this line if you wish to publish to pub.dev version: 1.0.0+1 environment: sdk: ">=2.12.0 <3.0.0" dependencies: flutter: sdk: flutter cupertino_icons: ^1.0.2 # TODO-1: Add packages dev_dependencies: flutter_test: sdk: flutter flutter_lints: ^1.0.0 flutter: uses-material-design: true
WebSocket app initial code
Connecting to a WebSocket server
We’ll make use of ...
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