Plugins
The JTA uses a pugin scheme to allow easy addition
of software modules to the whole framework. These plugins may either be
used to work on the data streams, display additional information to the
user or be bywork. A few standard plugins are provided with the package.
These plugins are desribed here. Jump down to the
list.
In contrast to the old version we have introduced a new scheme for loading
plugins. It is now possible to have two or more plugins of the same
name with several different configurations used in one application.
The order of the plugins is important!
To accomplish that we have introduced identifier for the plugins. A
normal plugin list would look like:
plugins = Socket,Telnet,ButtonBar,Terminal
If you wanted to set up another button bar you are in trouble because
it would read the same options twice. So when setting up two plugins of
the same name you do as follows:
plugins = Socket,Telnet,ButtonBar(one),ButtonBar(two),Terminal
You give both plugins a unique name (one and two)
and use this name in any following configuration properties:
layout.ButtonBar(one) = North
layout.ButtonBar(two) = South
ButtonBar(one).setup = http://server/one.conf
ButtonBar(two).setup = http://server/two.conf
And that is it! If you define properties without the unique name they
will be used as fallback values in case a needed property is not set for
a specific plugin.
Have a look at the example page
and the applet.conf used there.
Note:If you are using the 'Script' plugin, note that it must be between the Telnet/SSH and Terminal plugin to get at the datastream.
| Plugin |
Remarks |
|
Basic Plugins
|
| Socket |
A most basic plugin used for low level communication with remote
hosts. It almost always needed. |
| Telnet |
This is the actual handler for telnet type communications. It filters
the data streams and handles all telnet options. |
| SSH |
For more secure communication you would rather use SSH instead of the
Telnet plugin as it provides a way for secure communication over insecure
networks. |
|
Shell
|
A shell plugin for use with local command shells. Not really useful
right now. |
| Terminal |
This is a very important plugin as it is the actual terminal so you
can see what you do. It implements an ANSI/VT320 compatible terminal emulation. |
|
Add-On
|
| Status |
An example how to write a listener plugin and display information. |
|
Timeout
|
A useful plugin for Applet users. It will allow you to define an idle
timeout to close the connection. |
|
ButtonBar
|
The new implemenation of our well known button bar module. With new
configuration options and better look than ever. |
|
Script
|
The script plugin may be used to automate login procedures for guest
accounts. |
|
Sink
|
The Sink plugin is a replacement of the Terminal plugin, which just
reads and discard data. Useful if you do not want output. |
|
URLFilter
|
Filters URLs out of the incoming data and displays a list to open them
in a web browser (Applet) |
|
MudConnector
|
A special plugin for www.mudconnector.com
to display a list of muds to connect to. |
|
BSX plugin
|
A third party plugin for use with BSX enabled MUDs. It is contained
in the contrib.jar package. |
|