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shoulder-tap

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shoulder-tap

Allows clients to connect to a server and signal via a light-weight shoulder-tap event to indicate that work is available. It utilizes UDP. It was implemented to reduce latency and need for high frequency polling when implementing reliable distributed tra

  • 1.0.0
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
8
increased by700%
Maintainers
1
Weekly downloads
 
Created
Source

Requirements

Node 10+

Usage

Configuration Options

Configuration options with defaults that can be passed to the constructor.

options

Server

import ShoulderTapServer from 'shoulder-tap'

const shoulderTapServer = new ShoulderTapServer({
  type: 'udp4', // udp4 or udp6
  HOST: '127.0.0.1', // bind address
  PORT: 3131, // bind port
})

shoulderTapServer.addListener(key, func)
shoulderTapServer.removeListener(key)

Client

import ShoulderTapClient from 'shoulder-tap'

const shoulderTapClient = new ShoulderTapClient({
  type: 'udp4', // udp4 or udp6
  HOST: '127.0.0.1', // destination address
  PORT: 3131, // destination port
})

shoulderTapClient.setErrorListener((err) => {
  log.error(err)
})

shoulderTapClient.sendBestEffort(JSON.stringify({ key: 'testKey', value: 'testValue' }))

Getting started

npm i -S shoulder-tap

Testing

Command line

Ubuntu

npm run testServer
npm run testClient

OR

echo -n "{\"key\":\"hello\"}" >/dev/udp/localhost/3131

OR

echo -n "{\"key\":\"hello\"}" | nc -4u -w0 localhost 3131

More information

See the tests and implementation files.

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Package last updated on 25 Sep 2020

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