VimUnDo2XxSbilTBh%k(- [ ] Add tests LLLLSe_S|# ut_pex [![travis](https://img.shields.io/travis/fisch0920/ut_pex.svg)](https://travis-ci.org/fisch0920/ut_pex) [![npm](https://img.shields.io/npm/v/ut_pex.svg)](https://npmjs.org/package/ut_pex)5_<S# ip-set [![travis](https://img.shields.io/travis/fisch0920/ut_pex.svg)](https://travis-ci.org/fisch0920/ut_pex) [![npm](https://img.shields.io/npm/v/ut_pex.svg)](https://npmjs.org/package/ut_pex)5_iS# ip-set [![travis](https://img.shields.io/travis/fisch0920/ip-set.svg)](https://travis-ci.org/fisch0920/ut_pex) [![npm](https://img.shields.io/npm/v/ut_pex.svg)](https://npmjs.org/package/ut_pex)5_S# ip-set [![travis](https://img.shields.io/travis/fisch0920/ip-set.svg)](https://travis-ci.org/fisch0920/ip-set) [![npm](https://img.shields.io/npm/v/ut_pex.svg)](https://npmjs.org/package/ut_pex)5_S# ip-set [![travis](https://img.shields.io/travis/fisch0920/ip-set.svg)](https://travis-ci.org/fisch0920/ip-set) [![npm](https://img.shields.io/npm/v/ip-set.svg)](https://npmjs.org/package/ut_pex)5_ S1### BitTorrent Extension for Peer Discovery (PEX)5_ 6Sl[![browser support](https://ci.testling.com/fisch0920/ut_pex.png)](https://ci.testling.com/fisch0920/ut_pex)5_ eSl[![browser support](https://ci.testling.com/fisch0920/ip-set.png)](https://ci.testling.com/fisch0920/ut_pex)5_ SNode.js implementation of the ut_pex protocol, which is the most popular PEX (peer exchange) protocol used by bittorrent clients.5_  SNode.js 5_  SNode.js set optimized 5_%S%Node.js set data structure optimized 5_ S SThe purpose of this extension is to allow peers to exchange known peers directly with each other, thereby facilitating more efficient peer discovery and healthier swarms. The best description of the (nonstandardized) ut_pex protocol I could find is in section 2.1.4.3 of this [paper](http://www.di.unipi.it/~ricci/XR-EE-LCN_2010_010.pdf).5_ S 5_ S npm install ut_pex5_':vSThis package should be used with [bittorrent-protocol](https://github.com/feross/bittorrent-protocol), which supports a plugin-like system for extending the protocol with additional functionality.YSay you're already using `bittorrent-protocol`. Your code might look something like this:```js-var Protocol = require('bittorrent-protocol')var net = require('net')$net.createServer(function (socket) { var wire = new Protocol() socket.pipe(wire).pipe(socket) // handle handshake4 wire.on('handshake', function (infoHash, peerId) {H wire.handshake(new Buffer('my info hash'), new Buffer('my peer id')) })}).listen(6881)```:To add support for PEX, simply modify your code like this:5_:vS5_/vS-var Protocol = require('bittorrent-protocol')var net = require('net')var ut_pex = require('ut_pex')$net.createServer(function (socket) { var wire = new Protocol() socket.pipe(wire).pipe(socket) // initialize the extension wire.use(ut_pex())B // all `ut_pex` functionality can now be accessed at wire.ut_pex= // (optional) start sending peer information to remote peer wire.ut_pex.start()F // 'peer' event will fire for every new peer sent by the remote peer* wire.ut_pex.on('peer', function (peer) { // got a peer0 // probably add it to peer connections queue }) // handle handshake4 wire.on('handshake', function (infoHash, peerId) {H wire.handshake(new Buffer('my info hash'), new Buffer('my peer id')) })}).listen(6881)```5_`vS qHbStart sending regular PEX updates to the remote peer. Use `addPeer` and `dropPeer` to control the Jcontent of PEX messages. PEX messages will be sent once every ~65 seconds.```jswire.ut_pex.start()```hNote that ut_pex may be used for one-way peer discovery without sending PEX updates to the remote peer, abut this use case is discouraged because PEX, like bittorrent is more efficient through altruism.### stop,Stop sending PEX updates to the remote peer.```jswire.ut_pex.stop()``` ### resetQStops sending updates to the remote peer and resets internal state of peers seen.```jswire.ut_pex.reset()``` ### addPeerRAdds a peer to the locally discovered peer list to send with the next PEX message.```js%wire.ut_pex.addPeer('127.0.0.1:6889')``` ### dropPeerOAdds a peer to the locally dropped peer list to send with the next PEX message.```js&wire.ut_pex.dropPeer('127.0.0.1:6889')``` ## events### event: 'peer'+Fired for every new peer received from PEX.```js(wire.ut_pex.on('peer', function (peer) { var parts = peer.split(':') var ip = parts[0] var port = parts[1] // ...})```[Note: the event will not fire if the peer does not support ut_pex or if they don't respond.### event: 'dropped'=Fired for every peer dropped from the swarm notified via PEX.```js+wire.ut_pex.on('dropped', function (peer) { var parts = peer.split(':') var ip = parts[0] var port = parts[1] // ...})```5_vS*[Note: the event will not fire if the peer does not support ut_pex or if they don't respond.5_ vS'!** ~~basic discovery~~5_ vS,!*- [x] ~~basic discovery~~5_!!&vS0 "** ~~basic advertisement~~* ~~basic unit tests~~* better unit tests* peer flag support8* destroy wire if peer sends PEX messages too frequently* ipv6 support5_ !!vSP!$- [x] 5_ .!!vSZ "$ !$5_!""vS^ "%/- [x] Port implementation from `torrent-stream`5_ ""vSe!%/- [x] Port implementation from `torrent-stream`5_ !""vSp "%- [x] 5_! ""vSt!%%- [x] Port ipv4 from `torrent-stream`5_ "! ""vSw!%%- [x] Port IPv4 from `torrent-stream`5_!#"!""vSz "%- [x] Support IPv65_"$#!""vS{!#%!"%5_#%$"##vS|!#&- [ ] Support IPv65_$&%"##vS!"- [ ] Add tests5_%'& ""vS "% !%5_&('##vS ### start5_')(""vS%5_(*)""vS ## methodsT//5_)+*vS5_*-+vS5_+.,-vS5_-/.vS```js```5_.0/vS5_/10vSJNode.js set data structure optimized for use with IPv4 and IPv6 addresses.5_021vS \Efficient mutable Node.js set data structure optimized for use with IPv4 and IPv6 addresses.5_132vS 5_243vS/ O- [ ] Investigate use of [node-iptrie](https://github.com/postwait/node-iptrie)5_354TvSwTEfficient mutable set data structure optimized for use with IPv4 and IPv6 addresses.5_465qvS Efficient mutable set data structure optimized for use with IPv4 and IPv6 addresses. The primary use case is for IP blacklists.5_576qvS Efficient mutable set data structure optimized for use with IPv4 and IPv6 addresses. The primary use case is for potentially large IP blacklists.5_687vS 5_798vS!5_8:9 vS #%Original interval-tree written by []( # "!5_9;:#vS #AOriginal interval-tree written by [](https://github.com/galedric)5_:<;IvS #IOriginal interval-tree written by [galedric](https://github.com/galedric) #5_;=<#!v=S#TODO5_<>=$!v=S%$5_=?>%!v=S&%5_>@?&!v=S&var ipSet = require('ip-set')()5_?A@M&!v=S&Tvar ipSet = require('ip-set')(/* optionally pass an array of IP addresses to add */)5_@BA&!v=S&ipSet.5_ACB&!v=S'&&5_BDC'!v=S('ipSet.add(exampleBlockedIP0)5_CED'!v=S+'ipSet.add(exampleBlockedIP1)5_DFE'!v=S,'ipSet.add(exampleBlockedIP0)5_EGF'!v=S1('5_FHG(!v=S7(ipSet.contains(5_GIH(!v=S>(var isBlocked = ipSet.contains(5_HJI1(!v=SI(1var isBlocked = ipSet.contains(exampleBlockedIP2)5_IKJ5(!v=SN(Avar isBlocked = ipSet.contains(exampleBlockedIP2) // will be true5_JLK (!v=Sb(- [ ] Add tests5_KL(!v=Sd(- [ ] Add basic tests5_+-,vS5_ S5_S# ip-set [![travis](https://img.shields.io/travis/fisch0920/ip-set.svg)](https://travis-ci.org/fisch0920/ip-set) [![npm](https://img.shields.io/npm/v/ip-set.svg)](https://npmjs.org/package/ip-set)5_Sz# ip- [![travis](https://img.shields.io/travis/fisch0920/ut_pex.svg)](https://travis-ci.org/fisch0920/ut_pex) [![npm](https://img.shields.io/npm/v/ut_pex.svg)](https://npmjs.org/package/ut_pex)5