mirror of
https://github.com/webtorrent/bittorrent-tracker.git
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70 lines
2.0 KiB
JavaScript
70 lines
2.0 KiB
JavaScript
/**
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* Functions/constants needed by both the client and server (but only in node).
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* These are separate from common.js so they can be skipped when bundling for the browser.
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*/
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import querystring from 'querystring'
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import { concat } from 'uint8-util'
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export const IPV4_RE = /^[\d.]+$/
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export const IPV6_RE = /^[\da-fA-F:]+$/
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export const REMOVE_IPV4_MAPPED_IPV6_RE = /^::ffff:/
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export const CONNECTION_ID = concat([toUInt32(0x417), toUInt32(0x27101980)])
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export const ACTIONS = { CONNECT: 0, ANNOUNCE: 1, SCRAPE: 2, ERROR: 3 }
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export const EVENTS = { update: 0, completed: 1, started: 2, stopped: 3, paused: 4 }
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export const EVENT_IDS = {
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0: 'update',
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1: 'completed',
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2: 'started',
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3: 'stopped',
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4: 'paused'
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}
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export const EVENT_NAMES = {
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update: 'update',
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completed: 'complete',
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started: 'start',
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stopped: 'stop',
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paused: 'pause'
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}
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/**
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* Client request timeout. How long to wait before considering a request to a
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* tracker server to have timed out.
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*/
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export const REQUEST_TIMEOUT = 15000
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/**
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* Client destroy timeout. How long to wait before forcibly cleaning up all
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* pending requests, open sockets, etc.
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*/
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export const DESTROY_TIMEOUT = 1000
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export function toUInt32 (n) {
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const buf = new Uint8Array(4)
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const view = new DataView(buf.buffer)
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view.setUint32(0, n)
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return buf
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}
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/**
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* `querystring.parse` using `unescape` instead of decodeURIComponent, since bittorrent
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* clients send non-UTF8 querystrings
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* @param {string} q
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* @return {Object}
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*/
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export const querystringParse = q => querystring.parse(q, null, null, { decodeURIComponent: unescape })
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/**
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* `querystring.stringify` using `escape` instead of encodeURIComponent, since bittorrent
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* clients send non-UTF8 querystrings
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* @param {Object} obj
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* @return {string}
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*/
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export const querystringStringify = obj => {
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let ret = querystring.stringify(obj, null, null, { encodeURIComponent: escape })
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ret = ret.replace(/[@*/+]/g, char => // `escape` doesn't encode the characters @*/+ so we do it manually
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`%${char.charCodeAt(0).toString(16).toUpperCase()}`)
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return ret
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}
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