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Flash Player 6.
The LocalConnection class lets you develop SWF files that can send instructions to each other without the use of fscommand() or JavaScript. LocalConnection objects can communicate only between SWF files that are running on the same client machine, but they can be running in two different applications—for example, a SWF file running in a browser and a SWF file running in a projector. You can use LocalConnection objects to send and receive data within a single SWF file, but this is not a standard implementation; all the examples in this section illustrate communication between different SWF files.
The primary methods used to send and receive data are LocalConnection.send() and LocalConnection.connect(). At its most basic, your code will implement the following commands; notice that both the LocalConnection.send() and LocalConnection.connect() commands specify the same connection name, lc_name:
// Code in the receiving movie
receiving_lc = new LocalConnection();
receiving_lc.methodToExecute = function(param1, param2)
{
// Code to be executed
}
receiving_lc.connect("lc_name");
// Code in the sending movie
sending_lc = new LocalConnection();
sending_lc.send("lc_name", "methodToExecute", dataItem1, dataItem2)
The simplest way to use a LocalConnection object is to allow communication only between LocalConnection objects located in the same domain, since you won't have to address issues related to security. However, if you need to allow communication between domains, you have a number of ways to implement security measures. For more information, see the discussion of the connectionName parameter in LocalConnection.send(), and also the LocalConnection.allowDomain and LocalConnection.domain() entries.
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Method |
Description |
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Closes (disconnects) the LocalConnection object. |
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Prepares the LocalConnection object to receive commands from a |
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Returns a string representing the superdomain of the location of the current SWF file. |
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Invokes a method on a specified LocalConnection object. |
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Event handler |
Description |
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LocalConnection.allowDomain
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Invoked whenever the current (receiving) LocalConnection object receives a request to invoke a method from a sending LocalConnection object. |
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Invoked whenever the current (receiving) LocalConnection object, which is in a SWF file hosted at a domain using a secure protocol (HTTPS), receives a request to invoke a method from a sending LocalConnection object that is in a SWF file that is hosted at a nonsecure protocol. |
LocalConnection.onStatus
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Invoked after a sending LocalConnection object tries to send a command to a receiving LocalConnection object. |
Flash Player 6.
new LocalConnection()
None.
Nothing.
Constructor; creates a LocalConnection object.
The following example shows how receiving and sending SWF files create LocalConnnection objects. Notice that the two SWF files can use the same name or different names for their respective LocalConnection objects. In this example, they use the same name—my_lc.
// Code in the receiving SWF
my_lc = new LocalConnection();
my_lc.someMethod = function() {
// Your statements here
}
my_lc.connect("connectionName");
// Code in the sending SWF
my_lc = new LocalConnection();
my_lc.send("connectionName", "someMethod");
LocalConnection.connect(), LocalConnection.send()
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