Install Janus-Server

janus.txt

 1. UBUNTU
    a. Install Ubuntu 18.04.5 LTE
    b. sudo apt-get update
    c. sudo apt-get upgrade

 2. INSTALL DEPENDENCIES
    a. sudo apt-get --yes install git libmicrohttpd-dev libjansson-dev libssl-dev libsrtp0-dev libsofia-sip-ua-dev libglib2.0-dev \
       libopus-dev libogg-dev libcurl4-openssl-dev liblua5.3-dev libconfig-dev pkg-config gengetopt libtool automake \
       gtk-doc-tools cmake ninja-build python3 python3-pip

 3. INSTALL MESON
    a. sudo pip3 install meson
    b. sudo reboot

 4. INSTALL LIBNICE
    a. git clone https://gitlab.freedesktop.org/libnice/libnice
    b. cd libnice
    c. meson --prefix=/usr build && ninja -C build && sudo ninja -C build install

 5. INSTALL LIBSRTP
    a. cd ~
    b. wget https://github.com/cisco/libsrtp/archive/v2.3.0.tar.gz
    c. tar xfv v2.3.0.tar.gz
    d. cd libsrtp-2.3.0
    e. ./configure --prefix=/usr --enable-openssl
    f. make shared_library
    g. sudo make install

 6. INSTALL USRSCTP
    a. cd ~
    b. git clone https://github.com/sctplab/usrsctp
    c. cd usrsctp
    d. ./bootstrap
    e. ./configure --prefix=/usr
    f. make
    g. sudo make install

 7. INSTALL WEBSOCKETS
    a. cd ~
    b. git clone https://github.com/warmcat/libwebsockets.git
    c. cd libwebsockets
    d. git checkout v4.1-stable
    e. mkdir build
    f. cd build
    g. cmake -DLWS_MAX_SMP=1 -DCMAKE_INSTALL_PREFIX:PATH=/usr -DCMAKE_C_FLAGS="-fpic" ..
    h. make
    i. sudo make install
  
 8. INSTALL JANUS
    a. cd ~
    b. git clone https://github.com/meetecho/janus-gateway.git
    c. cd janus-gateway
    d. sh autogen.sh
    e. ./configure --prefix=/opt/janus
    f. make
    g. sudo make install
    h. sudo make configs

 9. INSTALL NGINX
    a. sudo apt install nginx

10. CONFIGURE DOMAIN
    a. cd /etc/nginx/sites-available
    b. cp default <domain.name>.conf
    c. sudo nano <domain.name>.conf
    d. # root /var/www/html/demos;
    d. # server_name <domain.name>;
    e. # save and exit
    f. cd ../sites-enabled
    g. rm default
    h. ln -s ../sites-available/<domain.name>.conf
    i. cd /var/www/html
    j. ln -s /opt/janus/share/janus/demos
    k. nginx -t && nginx -s reload

11. INSTALL LETSENCRYPT CERTIFICATE
    a. sudo apt-get install certbot python3-certbot-nginx
    b. sudo certbot --nginx -d <domain.name>

12. ADD CERTIFICATE TO JANUS
    a. cd /opt/janus/etc
    b. sudo nano janus.transport.http.jcfg
       # https = true
       # secure_port = 8089
       # cert_pem = "/etc/letsencrypt/live/<domain.name>/fullchain.pem"
       # cert_key = "/etc/letsencrypt/live/<domain.name>/privkey.pem"
       # save and exit
    c. sudo nano janus.transport.http.jcfg
       # wss = true
       # wss_port = 8989
       # cert_pem = "/etc/letsencrypt/live/<domain.name>/fullchain.pem"
       # cert_key = "/etc/letsencrypt/live/<domain.name>/privkey.pem"
       # save and exit

13. CREATE JANUS SERVICE
    a. sudo nano /etc/systemd/system/janus.service
    b. # insert code:

       [Unit]
       Description=Janus WebRTC Server
       After=network.target

       [Service]
       Type=simple
       ExecStart=/opt/janus/bin/janus -o
       Restart=on-abnormal
       LimitNOFILE=65536

       [Install]
       WantedBy=multi-user.target
       
    c. sudo systemctl enable janus
    d. sudo systemctl start janus