mod_echo is a little ejabberd module that immediately echoes (returns) all messages received by echo.myserver.com to the sender. So when a user goes to mod_echo, he will see himself reflected as in a mirror. Some use cases:
- Discover the own Jabber client: when a user Discovers echo.myserver.com, it will show the own client features, not the mod_echo ones.
- Add mod_echo as a contact: if you add 'echo.myserver.com' as a contact, you will have this mirror accessible on your roster. Now you can:
- See your presence in the roster, since that contact will mirror all your presence information.
- Send messages to yourself, since that contact will send to you the messages you send to him. This can help you check if the connection to the Jabber server is correct.