This module extracts cid: URIs (as defined in XEP-0231) from messages, and replies with their content whenever another client asks for the actual data.
"rooms.example.org" "muc"
Component = {
modules_enabled "bob";
...
}
With the plugin installer in Prosody 0.12 you can use:
sudo prosodyctl install --server=https://modules.prosody.im/rocks/ mod_bob
For earlier versions see the documentation for installing 3rd party modules