The
LocalConnection class lets you send messages between one Flash Player
or AIR application and another. LocalConnection objects can communicate
only among Flash Player or AIR content running on the same client
computer, but they can be running in different applications—for
example, a SWF file running in a browser, a SWF file running in
a projector, and an AIR application can all communicate use the
LocalConnection class.
For
every LocalConnection communication, there is a sender and a listener.
By default, Flash Player allows LocalConnection communication between
code running in the same domain. For code running in different sandboxes,
the listener must allow the sender permission by using the
LocalConnection.allowDomain()
method.
The string you pass as an argument to the
LocalConnection.allowDomain()
method
can contain any of the following: exact domain names, IP addresses,
and the
*
wildcard.
The
allowDomain()
method has changed from the
form it had in ActionScript 1.0 and 2.0. In those earlier versions,
allowDomain()
was
a callback method that you implemented. In ActionScript 3.0,
allowDomain()
is
a built-in method of the LocalConnection class that you call. With
this change,
allowDomain()
works in much the same
way as
Security.allowDomain()
.
A
SWF file can use the
domain
property of the LocalConnection
class to determine its domain.
