w-comor-mqtt

A websocket communicator in nodejs and browser. Mapping functions from nodejs to other end points, like a simple RPC.

Documentation

To view documentation or get support, visit docs.

Parts

w-comor-mqtt includes 2 parts:

• w-comor-mqtt-server: for nodejs server
• w-comor-mqtt-client: for nodejs and browser client

Installation

Using npm(ES6 module):

Note: w-comor-mqtt-server is mainly dependent on net, aedes-server-factory and aedes.

Note: w-comor-mqtt-client is mainly dependent on mqtt.

npm i w-comor-mqtt

Example for w-comor-mqtt-server:

Link: [dev source code]

import WComorMqttServer from 'w-comor-mqtt/dist/w-comor-mqtt-server.umd.js'

function random(min, max) {
    return Math.floor(Math.random() * max) + min
}

let opt = {
    port: 8080, //for mqtt nodejs server
    portWeb: 8090, //for mqtt web server
    authenticate: function(token) { 
        //authenticate user by token
        return new Promise(function(resolve, reject) {
            setTimeout(function() {
                resolve(true)
            }, 1000)
        })
    },
    filterFuncs: function(token, funcs) {
        //resolve funcs by authenticating user
        return new Promise(function(resolve, reject) {
            funcs = funcs.filter(function(v) {
                return v.indexOf('Hide') < 0
            })
            resolve(funcs)
        })
    },
    onClientChange: function(clients, opt) {
        console.log(`Server[port:${opt.port}][port for web:${opt.portWeb}] now clients: ${clients.length}`)
    },
    funcs: {
        'group.plus': function({ p1, p2 }) {
            return new Promise(function(resolve, reject) {
                setTimeout(function() {
                    resolve(p1 * p2)
                }, random(100, 3000))
            })
        },
        'group.div': function({ p1, p2 }) {
            return new Promise(function(resolve, reject) {
                setTimeout(function() {
                    resolve(p1 / p2)
                }, random(100, 3000))
            })
        },
        'add': function({ p1, p2 }) {
            return new Promise(function(resolve, reject) {
                setTimeout(function() {
                    resolve(p1 + p2)
                }, random(100, 3000))
            })
        },
        'addHide': function({ p1, p2 }) {
            return new Promise(function(resolve, reject) {
                setTimeout(function() {
                    resolve(p1 + p2)
                }, random(100, 3000))
            })
        },
        'minu': function({ p1, p2 }) {
            return new Promise(function(resolve, reject) {
                setTimeout(function() {
                    resolve(p1 - p2)
                }, random(100, 3000))
            })
        },
    },
}

new WComorMqttServer(opt)

Example for w-comor-mqtt-client:

Link: [dev source code]

import WComorMqttClient from 'w-comor-mqtt/dist/w-comor-mqtt-client.umd.js'

//opt
let opt = {
    url: 'mqtt://localhost:8080', //for mqtt nodejs server
    token: '*',
    open: function() {
        console.log('client nodejs: open')
    },
    close: function() {
        console.log('client nodejs: close')
    },
    error: function(err) {
        console.log('client nodejs: error:', err)
    },
    reconn: function() {
        console.log('client nodejs: reconn')
    },
}

//WComorMqttClient
new WComorMqttClient(opt)
    .then(function(wo) {
        console.log('client nodejs: funcs: ', wo)
        
        function core(ps) {
            wo.group.plus(ps)
                .then(function(r) {
                    console.log('client nodejs: plus(' + JSON.stringify(ps) + ')=' + r)
                })
                .catch(function(err) {
                    console.log('client nodejs: plus: catch: ', err)
                })
            wo.group.div(ps)
                .then(function(r) {
                    console.log('client nodejs: div(' + JSON.stringify(ps) + ')=' + r)
                })
                .catch(function(err) {
                    console.log('client nodejs: div: catch: ', err)
                })
            wo.add(ps)
                .then(function(r) {
                    console.log('client nodejs: add(' + JSON.stringify(ps) + ')=' + r)
                })
                .catch(function(err) {
                    console.log('client nodejs: add: catch: ', err)
                })
            wo.minu(ps)
                .then(function(r) {
                    console.log('client nodejs: minu(' + JSON.stringify(ps) + ')=' + r)
                })
                .catch(function(err) {
                    console.log('client nodejs: minu: catch: ', err)
                })
        }

        let i = 100
        setInterval(function() {
            i += 1
            core({
                p1: i,
                p2: 10,
            })
        }, 1000)

    })
    .catch(function(err) {
        console.log('client nodejs: catch', err)
    })

In a browser(UMD module):

Note: w-comor-mqtt-client is mainly dependent on mqtt.

[Optional] Add script with nomodule for IE11.

<script nomodule src="https://cdn.jsdelivr.net/npm/@babel/polyfill/dist/polyfill.min.js"></script>

[Necessary] Add script for mqtt.

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/mqtt.min.js"></script>

[Necessary] Add script for w-comor-mqtt-client.

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/w-comor-mqtt-client.umd.js"></script>

Example for w-comor-mqtt-client:

Link: [dev source code]

//opt
let opt = {
    url: 'mqtt://localhost:8090', //for mqtt web server
    token: '*',
    open: function() {
        console.log('client web: open')
    },
    close: function() {
        console.log('client web: close')
    },
    error: function(err) {
        console.log('client web: error:', err)
    },
    reconn: function() {
        console.log('client web: reconn')
    },
}

//WComorMqttClient
let WComorMqttClient = window['w-comor-mqtt-client']
new WComorMqttClient(opt)
    .then(function(wo) {
        console.log('client web: funcs: ', wo)
        
        function core(ps) {
            wo.group.plus(ps)
                .then(function(r) {
                    console.log('client web: plus(' + JSON.stringify(ps) + ')=' + r)
                })
                .catch(function(err) {
                    console.log('client web: plus: catch: ', err)
                })
            wo.group.div(ps)
                .then(function(r) {
                    console.log('client web: div(' + JSON.stringify(ps) + ')=' + r)
                })
                .catch(function(err) {
                    console.log('client web: div: catch: ', err)
                })
            wo.add(ps)
                .then(function(r) {
                    console.log('client web: add('+JSON.stringify(ps)+')='+r)
                })
                .catch(function(err) {
                    console.log('client web: add: catch: ', err)
                })
            wo.minu(ps)
                .then(function(r) {
                    console.log('client web: minu('+JSON.stringify(ps)+')='+r)
                })
                .catch(function(err) {
                    console.log('client web: minu: catch: ', err)
                })
        }

        let i = 100
        setInterval(function() {
            i += 1
            core({
                p1: i,
                p2: 10,
            })
        }, 1000)

    })
    .catch(function(err) {
        console.log('client web: catch', err)
    })