MACROMEDIA FLASH COMMUNICATION SERVER MX-SERVER-SIDE COMMUNICATION ACTIONSCRIPT DICTIONARY Dokumentacja Pobierz pdf (Strona 251)

Understanding file naming and domains used with this method

If an HTML page containing a movie is accessed differently (with regards to domain names) from

the way the movie itself accesses the Flash Communication Server, then the connection will not

be successful. This is a security feature of the Flash Player. But in some cases, this may be

inconvenient.

For example, if a web page containing a movie is served on an intranet from, say, http://

deptserver.mycorp.com, it can also be accessed simply by http://deptserver. If the page is accessed

via, say, http://deptServer/tcpage.htm, but the movie specifies deptServer.mycorp.com in the

targetURI, then the movie will not make a successful connection to the server. Similarly, if the

web page and movie are accessed as http://deptserver.mycorp.com/tcpage.htm, but the movie

specifies rtmp://deptserver in the

targetURI, it will not connect.

There are a few things you can do to prevent the security policies from inconveniencing you or

your users. First, and easiest, is to use a

targetURI that doesn’t specify a server name. (This is

applicable only if the Flash Communication Server and web server are running on the same

machine.) To do so, leave off the second slash in the

targetURI. For example, the following

commands will make the Flash Player attempt to connect to the same host and domain as the web

server the SWF file was served from.

nc = new NetConnection();

nc.connect("rtmp:/myApp");

Second, there is a bit of JavaScript you can use in your HTML page to avoid the security

problem. Assuming the movie uses a fully qualified domain name URL to access the Flash

Communication Server, this JavaScript redirects the web page to an explicitly named full

URL, like this:

//if the URL didn’t have the domain on it

if (document.URL.indexOf("mycorp.com") == -1) {

//redirect to a version that does

document.URL="http://deptServer.mycorp.com/tcpage.htm";

}

</script>

Finally, if you own a domain name, have access to the DNS records of that domain name, and

have a static IP address for your Flash Communication Server, you can create address ("A")

records to point a host name to that IP address. For instance, flashcom.mycorp.com could map to

the machine running the Flash Communication Server and having an IP address provided by

your IT department or ISP. Your web pages can continue to be hosted by whatever means you are

currently using. ("CNAME" records are recommended if you need to forward traffic to a server

that has a DNS-accessible host name but may or may not have a static IP address.)

Example

The following example connects to the funAndGames application on the macromedia server.

con = new NetConnection();

con.connect("rtmp://real.macromedia.com/funAndGames");

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MACROMEDIA FLASH COMMUNICATION SERVER MX-SERVER-SIDE COMMUNICATION ACTIONSCRIPT DICTIONARY Dokumentacja Strona 251