reconnecting-websocket vs socket.io-client vs websocket
WebSocket Libraries
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WebSocket Libraries

WebSocket libraries facilitate real-time communication between clients and servers over a single, long-lived connection. They enable developers to build applications that require instant data updates, such as chat applications, live notifications, and real-time collaboration tools. Each library offers unique features and capabilities that cater to different use cases and developer preferences, making it essential to choose the right one based on project requirements.

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reconnecting-websocket01,312-686 years agoMIT
socket.io-client063,0531.42 MB2054 months agoMIT
websocket03,787154 kB742 years agoApache-2.0

Feature Comparison: reconnecting-websocket vs socket.io-client vs websocket

Reconnection Handling

  • reconnecting-websocket:

    Reconnecting WebSocket automatically attempts to reconnect when the connection is lost, providing a seamless experience for users. It manages the reconnection attempts and allows developers to configure the maximum number of retries and the delay between attempts, ensuring that applications remain responsive even in unstable network conditions.

  • socket.io-client:

    Socket.IO includes built-in reconnection handling that automatically reconnects to the server when the connection is lost. It provides configurable options for reconnection attempts, delays, and backoff strategies, making it robust for real-time applications that require high availability.

  • websocket:

    WebSocket does not provide built-in reconnection handling. Developers must implement their own logic to handle reconnections, which can add complexity to the application. This approach offers more control but requires additional effort to ensure a reliable connection.

Protocol Features

  • reconnecting-websocket:

    Reconnecting WebSocket is a wrapper around the native WebSocket API, providing additional features like automatic reconnection without altering the underlying WebSocket protocol. It maintains compatibility with existing WebSocket implementations, making it easy to integrate into existing projects.

  • socket.io-client:

    Socket.IO extends the WebSocket protocol with additional features such as event-based communication, broadcasting, and the ability to create rooms and namespaces. This makes it suitable for applications that require more than just a simple message-passing mechanism.

  • websocket:

    WebSocket is a protocol that provides full-duplex communication channels over a single TCP connection. It is a low-level API that allows developers to send and receive messages in real-time, but it does not include higher-level features like event handling or broadcasting.

Browser Compatibility

  • reconnecting-websocket:

    Reconnecting WebSocket is compatible with modern browsers that support the WebSocket API. It does not provide fallback options for older browsers, so it is best suited for applications targeting current web standards.

  • socket.io-client:

    Socket.IO is designed to work across a wide range of browsers, including older ones. It automatically falls back to other transport methods (like long polling) if WebSocket is not available, ensuring broader compatibility for real-time applications.

  • websocket:

    WebSocket is supported in all modern browsers, but older browsers may not support it. Developers must consider the target audience and browser compatibility when using the WebSocket API.

Ease of Use

  • reconnecting-websocket:

    Reconnecting WebSocket offers a simple API that enhances the native WebSocket API with minimal additional complexity. It is easy to use for developers familiar with WebSocket, making it a great choice for straightforward implementations that require reconnection capabilities.

  • socket.io-client:

    Socket.IO provides a higher-level API that abstracts many complexities of real-time communication, making it easier for developers to implement features like event handling and broadcasting. This can significantly speed up development time, especially for complex applications.

  • websocket:

    WebSocket has a more complex API that requires developers to manage connections, message formats, and error handling manually. While this offers flexibility, it may increase the learning curve for developers who are new to real-time communication.

Performance

  • reconnecting-websocket:

    Reconnecting WebSocket maintains performance similar to native WebSocket, but the overhead of managing reconnections may introduce slight delays during network interruptions. However, it is optimized to minimize the impact on the user experience during reconnections.

  • socket.io-client:

    Socket.IO may introduce some performance overhead due to its additional features and abstractions. However, it is optimized for real-time applications and can handle a large number of concurrent connections efficiently, making it suitable for high-load scenarios.

  • websocket:

    WebSocket provides the best performance for real-time communication due to its low-level nature and minimal overhead. It allows for fast message transmission and is ideal for applications that require high throughput and low latency.

How to Choose: reconnecting-websocket vs socket.io-client vs websocket

  • reconnecting-websocket:

    Choose Reconnecting WebSocket if you need automatic reconnection capabilities for WebSocket connections, especially in scenarios where network instability is a concern. It is ideal for applications that require persistent connections and cannot afford to lose messages during disconnections.

  • socket.io-client:

    Choose Socket.IO if you require a comprehensive solution that includes fallback options for older browsers and automatic reconnection. It also offers additional features like rooms, namespaces, and event-based communication, making it suitable for complex real-time applications.

  • websocket:

    Choose WebSocket if you prefer a lightweight and straightforward implementation for real-time communication without additional abstractions. It is best for applications where you want full control over the WebSocket protocol and do not need the extra features provided by other libraries.

Similar Npm Packages to reconnecting-websocket

reconnecting-websocket is a JavaScript library that provides a simple way to manage WebSocket connections with automatic reconnection capabilities. It enhances the native WebSocket API by adding features such as automatic reconnection, event handling, and message queuing, making it easier to maintain a stable connection in applications that rely on real-time data. This library is particularly useful for applications that require persistent connections, such as chat applications, live notifications, or real-time data feeds.

While reconnecting-websocket offers robust features for managing WebSocket connections, there are other libraries in the ecosystem that provide similar functionalities. Here are a few alternatives:

  • socket.io-client is the client-side library for Socket.IO, a popular framework for real-time web applications. Socket.IO provides a higher-level abstraction over WebSockets, offering features such as automatic reconnection, multiplexing, and fallback options for older browsers. If you need a more comprehensive solution for real-time communication that includes additional features like rooms and namespaces, socket.io-client is a great choice. It simplifies the process of establishing connections and handling events, making it suitable for complex applications that require real-time interactions.
  • websocket is a simple and lightweight library that provides a straightforward implementation of the WebSocket protocol. It allows developers to create WebSocket clients and servers with minimal overhead. While it does not include built-in reconnection features like reconnecting-websocket, it can be a good option for applications that require a basic WebSocket implementation without additional complexity. If your application has simple real-time communication needs and you prefer a minimalistic approach, websocket may be the right choice.

To see how reconnecting-websocket compares with socket.io-client and websocket, check out the comparison: Comparing reconnecting-websocket vs socket.io-client vs websocket.

Similar Npm Packages to socket.io-client

socket.io-client is a popular library for real-time communication in web applications. It enables bi-directional communication between clients and servers, allowing developers to build applications that require real-time capabilities, such as chat applications, live notifications, and collaborative tools. While socket.io-client is widely used and feature-rich, there are several alternatives that also provide real-time communication solutions. Here are a few noteworthy options:

  • primus is a flexible and powerful framework for real-time applications. It abstracts the underlying transport layer, allowing developers to choose from various real-time protocols such as WebSockets, Server-Sent Events, and more. Primus is designed to be extensible and modular, making it a great choice for developers who need a customizable solution for real-time communication. Its plugin architecture allows for easy integration of additional features, making it suitable for both simple and complex applications.

  • socketcluster-client is a real-time framework that provides a scalable solution for building real-time applications. It is built on top of WebSockets and offers features like automatic reconnection, multiplexing, and pub/sub messaging. SocketCluster is particularly useful for applications that require high scalability and performance, as it supports horizontal scaling across multiple servers. If your application demands a robust and scalable real-time communication solution, socketcluster-client is worth considering.

  • sockjs-client is a JavaScript library that provides a WebSocket-like object in environments that do not support WebSockets. It offers a fallback mechanism to various other protocols, ensuring that real-time communication can still occur even in less-than-ideal network conditions. SockJS is ideal for applications that need to ensure compatibility across a wide range of browsers and environments. If you are looking for a solution that guarantees connectivity regardless of the client's capabilities, sockjs-client is a solid choice.

To see how socket.io-client compares with primus, socketcluster-client, and sockjs-client, check out the comparison: Comparing primus vs socket.io-client vs socketcluster-client vs sockjs-client.

Similar Npm Packages to websocket

websocket is a package that provides a simple way to create WebSocket servers and clients in Node.js. WebSockets enable real-time, two-way communication between clients and servers, making them ideal for applications that require live updates, such as chat applications, online gaming, and collaborative tools. While the websocket package offers a straightforward implementation of the WebSocket protocol, there are several alternatives in the Node.js ecosystem that provide additional features and flexibility. Here are a few alternatives:

  • socket.io is a widely-used library that simplifies real-time communication between clients and servers. Unlike the basic WebSocket implementation, socket.io provides a higher-level API that supports fallback options for browsers that do not support WebSockets. It also includes features such as automatic reconnection, rooms, and namespaces, making it a powerful choice for building real-time applications. If you need a robust solution with extensive features and cross-browser compatibility, socket.io is an excellent option.
  • uws (µWebSockets) is a highly efficient WebSocket library designed for performance. It is known for its low latency and high throughput, making it suitable for applications that require handling a large number of concurrent connections. uws is often used in scenarios where performance is critical, such as in gaming or financial applications. If your application demands high performance and low resource consumption, uws is a strong contender.
  • ws is another popular WebSocket library for Node.js that provides a simple and efficient implementation of the WebSocket protocol. It is lightweight and easy to use, making it a great choice for developers who need a straightforward solution for real-time communication. ws is well-maintained and widely adopted, making it a reliable option for many applications. If you prefer a minimalistic approach without additional features, ws is an excellent choice.

To see how websocket compares with socket.io, uws, and ws, check out the comparison: Comparing socket.io vs uws vs websocket vs ws.

README for reconnecting-websocket

Reconnecting WebSocket

Build Status Coverage Status

WebSocket that will automatically reconnect if the connection is closed.

Features

  • WebSocket API compatible (same interface, Level0 and Level2 event model)
  • Fully configurable
  • Multi-platform (Web, ServiceWorkers, Node.js, React Native)
  • Dependency free (does not depend on Window, DOM or any EventEmitter library)
  • Handle connection timeouts
  • Allows changing server URL between reconnections
  • Buffering. Will send accumulated messages on open
  • Multiple builds available (see dist folder)
  • Debug mode

Install

npm install --save reconnecting-websocket

Usage

Compatible with WebSocket Browser API

So this documentation should be valid: MDN WebSocket API.

Ping me if you find any problems. Or, even better, write a test for your case and make a pull request :)

Simple usage

import ReconnectingWebSocket from 'reconnecting-websocket';

const rws = new ReconnectingWebSocket('ws://my.site.com');

rws.addEventListener('open', () => {
    rws.send('hello!');
});

Update URL

The url parameter will be resolved before connecting, possible types:

  • string
  • () => string
  • () => Promise<string>
import ReconnectingWebSocket from 'reconnecting-websocket';

const urls = ['ws://my.site.com', 'ws://your.site.com', 'ws://their.site.com'];
let urlIndex = 0;

// round robin url provider
const urlProvider = () => urls[urlIndex++ % urls.length];

const rws = new ReconnectingWebSocket(urlProvider);

import ReconnectingWebSocket from 'reconnecting-websocket';

// async url provider
const urlProvider = async () => {
    const token = await getSessionToken();
    return `wss://my.site.com/${token}`;
};

const rws = new ReconnectingWebSocket(urlProvider);

Options

Sample with custom options

import ReconnectingWebSocket from 'reconnecting-websocket';
import WS from 'ws';

const options = {
    WebSocket: WS, // custom WebSocket constructor
    connectionTimeout: 1000,
    maxRetries: 10,
};
const rws = new ReconnectingWebSocket('ws://my.site.com', [], options);

Available options

type Options = {
    WebSocket?: any; // WebSocket constructor, if none provided, defaults to global WebSocket
    maxReconnectionDelay?: number; // max delay in ms between reconnections
    minReconnectionDelay?: number; // min delay in ms between reconnections
    reconnectionDelayGrowFactor?: number; // how fast the reconnection delay grows
    minUptime?: number; // min time in ms to consider connection as stable
    connectionTimeout?: number; // retry connect if not connected after this time, in ms
    maxRetries?: number; // maximum number of retries
    maxEnqueuedMessages?: number; // maximum number of messages to buffer until reconnection
    startClosed?: boolean; // start websocket in CLOSED state, call `.reconnect()` to connect
    debug?: boolean; // enables debug output
};

Default values

WebSocket: undefined,
maxReconnectionDelay: 10000,
minReconnectionDelay: 1000 + Math.random() * 4000,
reconnectionDelayGrowFactor: 1.3,
minUptime: 5000,
connectionTimeout: 4000,
maxRetries: Infinity,
maxEnqueuedMessages: Infinity,
startClosed: false,
debug: false,

API

Methods

constructor(url: UrlProvider, protocols?: string | string[], options?: Options)

close(code?: number, reason?: string)
reconnect(code?: number, reason?: string)

send(data: string | ArrayBuffer | Blob | ArrayBufferView)

addEventListener(type: 'open' | 'close' | 'message' | 'error', listener: EventListener)
removeEventListener(type:  'open' | 'close' | 'message' | 'error', listener: EventListener)

Attributes

More info

binaryType: string;
bufferedAmount: number;
extensions: string;
onclose: EventListener;
onerror: EventListener;
onmessage: EventListener;
onopen: EventListener;
protocol: string;
readyState: number;
url: string;
retryCount: number;

Constants

CONNECTING 0 The connection is not yet open.
OPEN       1 The connection is open and ready to communicate.
CLOSING    2 The connection is in the process of closing.
CLOSED     3 The connection is closed or couldn't be opened.

Contributing

Read here

License

MIT

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