server

Installation

The idea is to have WebRTC (web-based peer-to-peer audio / video / data) using RTCMulticonnection running on an https server using letsencrypt.

Chrome and Chromium won’t work without https, hence letsencrypt.

I have a slightly custom version of the RTCMulticonnection server, js and html files, included in this repo. The current version of RTCMulticonnection I used is from October 2020.

I've run this happily on a Linode small instance or a MythicBeasts server. I've had trouble with AWS, but that might just be me. Bear in mind that webRTC needs a lot of ports open.

I'm assuming Ubuntu.

Install and configure Apache

I used this guide for letsencrypt - it's probably worth checking that rather than replying on the commands below.

First set up your subdomain, for example 'libbybot.example.com' and make sure your DNS is in place.

Install apache

sudo apt-get install apache2

sudo mkdir -p /var/www/your-server/public_html
sudo chown -R $USER:$USER /var/www/your-server
sudo chmod -R 755 /var/www
nano /var/www/your-server/public_html/index.html
sudo cp /etc/apache2/sites-available/000-default.conf /etc/apache2/sites-available/your-server.conf

Configure

sudo nano /etc/apache2/sites-available/your-server.conf

contents:

<VirtualHost *:80>     
    ServerAdmin webmaster@localhost
    ServerName your-server
    ServerAlias your-server
    ErrorLog ${APACHE_LOG_DIR}/your-server_error.log
    CustomLog ${APACHE_LOG_DIR}/your-server_access.log combined
    RewriteEngine on
    RewriteCond %{SERVER_NAME} your-server
    RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]
</VirtualHost>

sudo a2ensite your-server.conf
sudo a2enmod rewrite
sudo service apache2 reload
sudo service apache2 restart

Add certs

# for the certbot code, you now need to install a ppa
sudo apt-get install software-properties-common python-software-properties
sudo add-apt-repository ppa:certbot/certbot
sudo apt-get update
sudo apt-get install python-certbot-apache

# get the cert  
sudo certbot --apache -d your-server

auto-renew

 crontab -e

contents

 # m h  dom mon dow   command
 30 2 * * 1 sudo -H /opt/letsencrypt/letsencrypt-auto renew >> /var/log/lets-encrypt/le-renew.log

Get and install RTCMultiConnection

Install node

curl -sL https://deb.nodesource.com/setup_4.x — Node.js v4 LTS "Argon"

sudo apt-get install -y nodejs

Install RTCMulticonnection server and API

cd /var/www/your-server/
git clone https://github.com/muaz-khan/RTCMultiConnection
cd RTCMultiConnection
npm install --production

Replace the default server with the one in this in this github, replacing "yourserver" with your server's name.

Add a new directory 'libbybot', and add the html and javascript files from this github repo directory into that directory.

Run the server:

nohup nodejs server.js > /dev/null 2>&1 &

Longer term, you need to figure out how to do notifications. There's a place in server.js where you can send a dm tweet, for example,

var str = "/usr/local/bin/t dm @youname \"libbybot is live at "+roomName+"\" > tweetlog_online.txt 2>&1";

or a slackbot command (you'll need to auth it first):

var str = 'curl -X POST --data-urlencode \'payload={\"channel\": \"#foo\", \"username\": \"libbybot_notifier\", \"text\": \"libbybot is online at <https://yourserver:8443/libbybot/remote11.html#'+roomName+'>\", \"icon_emoji\": \":robot_face:\"}\' https://hooks.slack.com/services/examplestr/examplestr';

then

exec(str);