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const APP = {
  SW: null,
  DB: null, //TODO:
  init() {
    //called after DOMContentLoaded
    //register our service worker
    APP.registerSW();
    document
      .getElementById('colorForm')
      .addEventListener('submit', APP.saveColor);

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const QUERY_CACHE_KEY = 'CACHE_V_0';
const GRAPHQL_URL = 'https://example.com/graphql';


self.addEventListener('fetch', e => {
  if (isGraphql(e.request)) {
    handleGraphQL(e);
  }
});

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function fullSync(page = 1) {
  let open = indexedDB.open("books", 1);

  // Set up the database schema
  open.onsuccess = evt => {
    let db = open.result;
    fullSyncPage(db, 1);
  };
}

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class Socket {
  constructor(
    domain,
    { reconnection = true, reconnectionDelay = 1000 } = {
      reconnection: true,
      reconnectionDelay: 1000,
    }
  ) {
    this.ws = this.connect(domain);
    this.reconnection = reconnection;

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// Based on:
// http://github.com/alexanderte/websocket-server-node.js
// http://github.com/Guille/node.websocket.js

function nano(template, data) {
  return template.replace(/\{([\w\.]*)}/g, function (str, key) {
    var keys = key.split("."), value = data[keys.shift()];
    keys.forEach(function (key) { value = value[key] });
    return value;
  });

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#Installing configuring Postfix/Dovecot/Spamassassin/Roundcube

I've documented the steps in short to help me reproduce all the steps. Published it here for improvement and as a reference for others. Of course feel free to comment to improve this document.

This Gist is quite big and not all details are fully explained. But if you're going to run a mailserver you should be able to fill in the missing parts. The most important are covered. But be sure to read up to understand the meaning of all the stuff you configure. Since I used a lot of references of other sources (See at the end) I left out a lot of explanation in this document.

Don't forget that I'm not a Postfix/Dovecot/Spamassasin pro either. I just got it working the way I wanted to.

• Used Ubuntu 12.04 LTS.
• Set a root password.

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import { h, FunctionComponent } from 'preact'
import { Device } from 'mediasoup-client'
import { useEffect, useRef } from 'preact/hooks'
import {
  Consumer,
  Producer,
  RtpCapabilities,
  Transport,
} from 'mediasoup-client/lib/types'
import { openSocket } from '../../lib/socket'

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import { Consumer, Producer, Transport } from 'mediasoup/node/lib/types'
import WebSocket from 'ws'
import { createWebrtcTransport } from './createWebrtcTransport'
import { createRouter } from './router'

const WebsocketConnection = async (websocket: WebSocket.Server) => {
  const { router } = await createRouter()
  let producerTransport: Transport
  let consumerTransport: Transport
  let producer: Producer

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• Based on https://gist.github.com/GAS85/990b46a3a9c2a16c0ece4e48ebce7300
• This totorial is for an older Ubuntu 18.04, for a Ubuntu 20.04 please read here --> https://gist.github.com/GAS85/38eb5954a27d64ae9ac17d01bfe9898c

Requirements

• A self-managed VPS or dedicated server with Ubuntu 18.04 running Apache 2.4.xx.
• A registered domain name with working HTTPS (TLS/SSL). HTTP/2 only works alongside HTTPS because most browsers, including Firefox and Chrome, don’t support HTTP/2 in cleartext (non-TLS) mode.

Step 1: Install Apache2

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/* Polyfill indexOf. */
var indexOf;

if (typeof Array.prototype.indexOf === 'function') {
    indexOf = function (haystack, needle) {
        return haystack.indexOf(needle);
    };
} else {
    indexOf = function (haystack, needle) {
        var i = 0, length = haystack.length, idx = -1, found = false;