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websocket2tcpsocket

v1.0.3

Published

websocket2tcpsocket

Downloads

9

Readme

websocket2tcpsocket

websocket 与 tcp socket的桥梁。方便js编程,可以直接与tcp服务器通信。

安装

npm install websocket2tcpsocket --save

使用方法1

指定 websocket 地址的方式:

var W2T = require('../index.js')
var w2t = new W2T()
w2t.start({ host: 'localhost', port: 8000 })

详细可以参见 test1

使用方法2

可以传入express服务器实例,来初始化websocket:

const express = require('express')
const http = require('http')
const W2T = require('../index.js')
const app = express()
app.use(function (req, res) {
  res.send({ msg: 'hello' })
})
const server = http.createServer(app)
const w2t = new W2T()
w2t.start({server})
server.listen(8000, function listening () {
  console.log('Listening on %d', server.address().port)
})

详细可以参见 test2

websocket客户端说明

首条消息,需要告知W2T,打通哪个地址。

这样每个websocket都可以发往不同的tcp服务器。更加灵活。

例如:

ws.on('open', function open() {
  // 首条消息,打通tcp链路。
  ws.send('{"tip":"localhost", "tport":12345}');
  ws.send(String(random()));
});

编写目的

github上有不少 websocket proxy。

但是都是以可执行方式提供。不方便内嵌整合进现有web服务中。

且都是目的TCP服务器配置唯一。不方便每个websocket,需要到不同TCP服务器的情况。

本库,目的有以下:

  • 以库方式提供,方便直接内嵌入web service中。

  • 达成网页可以直接通过它的web service,访问tcp服务器。

  •   每个websocket连接可以自定义发往的TCP服务器。更加灵活。

参考项目

本项目参考了 https://github.com/novnc/websockify