1.0.1 • Published 7 years ago
read-bytes-stream v1.0.1
read-bytes-stream
Read
n
bytes of a stream, then swap to another stream
Usage
var readBytes = require('read-bytes-stream')
var xsalsaStream = require('...')
var nonce = Buffer.alloc(32)
var key = Buffer.from('my secret key')
var streamCipher = readBytes(32, function (bytes, swap) {
if (bytes.length < 32) return swap(new Error('Too few bytes'))
nonce.set(bytes)
swap(null, xsalsaStream(nonce, key))
})
API
var stream = readBytes(n, onchunk)
Will read n
bytes, unless the source stream ends prematurely.
onchunck(bytes, swap)
will be called with as many bytes as was read,
but at most n
, and a callback to either return an Error
or swap to another
stream. You can optionally re-write the received bytes to the new stream which
effectively turns this module into peek-stream
Install
npm install read-bytes-stream