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engine.io-client

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engine.io-client

Client for the realtime Engine

  • 0.3.5
  • Source
  • npm
  • Socket score

Version published
Maintainers
1
Created

What is engine.io-client?

The engine.io-client npm package is a client-side library that provides bidirectional event-based communication between web clients and servers. It is the client component of the Engine.IO protocol, which is a transport layer built on top of WebSocket and other transport mechanisms to provide a reliable, low-latency connection for real-time applications.

What are engine.io-client's main functionalities?

Establishing a connection

This feature allows you to establish a connection to an Engine.IO server. The 'open' event is emitted when the connection is successfully established.

const eio = require('engine.io-client');
const socket = eio('ws://localhost');
socket.on('open', function(){
  console.log('Connection established');
});

Sending messages

Once a connection is established, you can send messages to the server using the 'send' method.

socket.send('Hello World!');

Receiving messages

You can listen for messages from the server with the 'message' event. The callback function receives the message data as its argument.

socket.on('message', function(data){
  console.log('Received message:', data);
});

Handling connection errors

The 'error' event is emitted when there is a connection error. The callback function receives the error object as its argument.

socket.on('error', function(error){
  console.error('Connection error:', error);
});

Closing the connection

The 'close' event is emitted when the connection is closed. The callback function receives the reason and a description as arguments.

socket.on('close', function(reason, description){
  console.log('Connection closed', reason, description);
});

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Package last updated on 14 Oct 2012

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