JID (Jabber)
A JID or Jabber Identity (also called a Jabber ID) is the username or account name used to access a Jabber account.
They usually take the form user@domain/resource in a similar way to email addresses.
The resource component enables a user to contact a particular access point logged into each account, e.g. [email protected]/work and [email protected]/home. The resource component is not necessary in order to contact a Jabber user.
Transports, agents, and other automated parts of the Jabber network may not have a user part to the JID. A common example would be the AIM transport, where the transport itself has a JID along the lines of aim.domain.com, and contacts on AIM would appear as [email protected].
In a similar way to Sendmail, accessing other protocols is possible with Jabber transports. Users can then contact from a client such as MSN Messenger using the JID form user%[email protected].
Limitations
Jabber usernames are limited to 1023 characters and the following characters are not allowed:
- @ ("at" sign)
- : (colon)
- ' (single quote)
- " (double quote)
- < (open angle bracket) and
>
(close angle bracket) - & (ampersand)
- \r (carriage return), \n (newline), \t (tab) and any other control character
- white space