Prosody

Prosody is a small and fast XMPP daemon written in Lua. You can install it like this:

sudo apt-get install prosody

Edit the config /etc/prosody/prosody.cfg.lua to make sure you have BOSH support, group rosters and compression enabled, and you probably want self-registration off:

modules_enabled = {
  "compression";
  "bosh";
  "groups";
  ...
}

allow_registration = false;
bosh_ports = { 5280 };

...

Set up a virtual host config for your domain in /etc/prosody/conf.avail/yourdomain.cfg.lua

VirtualHost "yourdomain.com"
    enabled = true
    ssl = {
        key = "/etc/ssl/private/star.yourdomain.com.key";
        certificate = "/etc/ssl/certs/star.yourdomain.com.crt";
    }

-- optional, for IRC-style chatrooms
Component "chatrooms.yourdomain.com" "muc"
    restrict_room_creation = "local"

-- optional, for file transfers
Component "chatproxy.yourdomain.com" "proxy65"

Then enable it with ln -s into /etc/prosody/conf.d

DNS configuration

You need your chat, chatrooms, and chatproxy subdomains to be A records (not CNAME), and you also need 2 SRV records and a TXT record, thus:

_xmpp-client._tcp.yourdomain.com    = SRV: 0 5 5222 chat.yourdomain.com 
_xmpp-server._tcp.yourdomain.com    = SRV: 0 5 5269 chat.yourdomain.com

TXT: _xmpp-client-xbosh=https://chat.yourdomain.com/http-bind/

Add some users

Add yourself with

  sudo prosodyctl adduser yourusername@yourdomain.com

Links

More docs at