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bufferutil

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bufferutil

WebSocket buffer utils

  • 3.0.5
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
1.5M
decreased by-27.93%
Maintainers
3
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What is bufferutil?

The bufferutil package is a Node.js utility module that provides efficient buffer operations. It is primarily used to enhance the performance of binary data manipulation by providing a native addon for buffer operations which are faster than pure JavaScript implementations.

What are bufferutil's main functionalities?

Masking and unmasking WebSocket frames

This feature allows you to mask and unmask data according to the WebSocket protocol, which is useful for WebSocket frame manipulation.

const bufferUtil = require('bufferutil');
const buffer = Buffer.from('Hello World');
const masked = bufferUtil.mask(buffer, Buffer.from([0x12, 0x34, 0x56, 0x78]));
const unmasked = bufferUtil.unmask(masked, Buffer.from([0x12, 0x34, 0x56, 0x78]));

Buffer concatenation

This feature provides a method to concatenate multiple buffers into a single buffer efficiently.

const bufferUtil = require('bufferutil');
const buffers = [Buffer.from('Hello'), Buffer.from(' '), Buffer.from('World')];
const concatenated = bufferUtil.concat(buffers);

Buffer comparison

This feature allows you to compare two buffers for equality, which is faster than comparing them byte-by-byte in JavaScript.

const bufferUtil = require('bufferutil');
const buffer1 = Buffer.from('Hello');
const buffer2 = Buffer.from('Hello');
const isEqual = bufferUtil.equals(buffer1, buffer2);

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Package last updated on 06 May 2018

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