range-parser
Advanced tools
Package description
The range-parser package is a utility for parsing HTTP range header fields. It's useful for handling requests for specific ranges of data, which is particularly relevant for serving large files in smaller chunks, such as videos or large documents.
Parse Range Header
This feature allows you to parse the 'Range' header from HTTP requests. It takes the size of the file and the range header as arguments and returns an array of ranges, or an error code if the range is unsatisfiable or syntactically invalid.
const rangeParser = require('range-parser');
const rangeHeader = 'bytes=0-499';
const fileSize = 1000;
const parsedRanges = rangeParser(fileSize, rangeHeader);The http-range package is similar to range-parser in that it also parses HTTP range headers. However, it provides a more high-level API and includes additional features for creating and manipulating ranges.
The accept-ranges package is designed to parse the Accept-Ranges header in HTTP. While it serves a different purpose from range-parser, it is related in the context of HTTP range requests and responses.
This package is used for parsing multipart range headers, which is a more complex scenario than what range-parser handles. It's useful for multipart downloads and uploads, providing functionality that range-parser does not.
Readme
Range header field parser.
This is a Node.js module available through the
npm registry. Installation is done using the
npm install command:
$ npm install range-parser
var parseRange = require('range-parser')
Parse the given header string where size is the maximum size of the resource.
An array of ranges will be returned or negative numbers indicating an error parsing.
-2 signals a malformed header string-1 signals an unsatisfiable range// parse header from request
var range = parseRange(size, req.headers.range)
// the type of the range
if (range.type === 'bytes') {
// the ranges
range.forEach(function (r) {
// do something with r.start and r.end
})
}
These properties are accepted in the options object.
Specifies if overlapping & adjacent ranges should be combined, defaults to false.
When true, ranges will be combined and returned as if they were specified that
way in the header.
parseRange(100, 'bytes=50-55,0-10,5-10,56-60', { combine: true })
// => [
// { start: 0, end: 10 },
// { start: 50, end: 60 }
// ]
FAQs
Range header field string parser
The npm package range-parser receives a total of 24,442,476 weekly downloads. As such, range-parser popularity was classified as popular.
We found that range-parser demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 4 open source maintainers collaborating on the project.
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