node-dht-peer-crawler's Introduction

node-dht-peer-crawler

A fast and stable DHT crawler.

Installation

$ npm install dht-peer-crawler

Usage

import Crawler from 'dht-peer-crawler'

const crawler = new Crawler()

crawler.on('announce_peer', (infoHashStr, addressStr) => {
  console.log(`got a peer ${addressStr} on ${infoHashStr}`)
})

crawler.start().then(() => {
  console.log('start crawler success')
}, (error) => {
  console.error(`start crawler failed: ${error}`)
})

const signalTraps = ['SIGTERM', 'SIGINT', 'SIGUSR2']

signalTraps.map(type => {
  process.once(type, async () => {
    try {
      await crawler.stop()
      console.log('stop crawler success')
    } finally {
      process.kill(process.pid, type)
    }
  })
})

run with the command:

$ node --experimental-specifier-resolution=node app.js

Test

$ npm test

API

`crawler = new Crawler(listenPort)`

Create a new crawler instance.

`crawler.announcePeers(infoHashStr, port)`

announce the peer.

`crawler.on('announce_peer', [infoHashStr, addressStr, impliedPort, torrent])`

Emitted when received an announce_peer message.

`crawler.on('new_info_hash', [infoHashStr])`

Emitted when find a new info_hash.

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node-dht-peer-crawler's Issues

Support esm

https://esm.sh/dht-peer-crawler

Can’t use with deno

doesn't work with node 18

I get an error about a directory missing from node modules.

I created the directory, and still get an error:

➜  scrapers git:(master) ✗ 
$ node dht-crawler.js                               
node:internal/errors:466
    ErrorCaptureStackTrace(err);
    ^

Error [ERR_UNSUPPORTED_DIR_IMPORT]: Directory import '/home/ettinger/src/scrapers/node_modules/dht-peer-crawler/lib/network' is not supported resolving ES modules imported from /home/ettinger/src/scrapers/node_modules/dht-peer-crawler/lib/crawler.mjs
    at new NodeError (node:internal/errors:377:5)
    at finalizeResolution (node:internal/modules/esm/resolve:401:17)
    at moduleResolve (node:internal/modules/esm/resolve:966:10)
    at defaultResolve (node:internal/modules/esm/resolve:1174:11)
    at ESMLoader.resolve (node:internal/modules/esm/loader:605:30)
    at ESMLoader.getModuleJob (node:internal/modules/esm/loader:318:18)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/module_job:80:40)
    at link (node:internal/modules/esm/module_job:78:36) {
  code: 'ERR_UNSUPPORTED_DIR_IMPORT',
  url: 'file:///home/ettinger/src/scrapers/node_modules/dht-peer-crawler/lib/network'
}

Node.js v18.3.0

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