Application.xml custom global variables

Wowza Streaming Engine
1

For RTSP to work, these variables need to be set in each Applicaton.xml file.

RTSPBindIpAddress, RTSPConnectionIpAddress, RTSPOriginIpAddress

As these values are equal for all applications on a certain server, it would be handy and a lot more managable to define these values on a higher level.

Is it possible to define a custom global variable in a startup script or global config file, and use it in Application.xml?

2

Not that I know of. You can alter the /conf/Application.xml file, and if all your applications use same configuration then don’t make a /conf/[app-name/Application.xml so that the /conf/Application.xml is used.

Richard

3

I guess it can be done with the right code?

I see these variables can be used in Application.xml

<!-- StorageDir path variables
${com.wowza.wms.AppHome} - Application home directory 
${com.wowza.wms.ConfigHome} - Configuration home directory
${com.wowza.wms.context.VHost} - Virtual host name
${com.wowza.wms.context.VHostConfigHome} - Virtual host config directory
${com.wowza.wms.context.Application} - Application name
${com.wowza.wms.context.ApplicationInstance} - Application instance name 
-->

Can you point us in the right direction to do something similar, but for custom variables?

4

Indeed not exactly what we are looking for. But I used a system variable for troubleshooting purposes.

When using ${com.wowza.wms.context.VHost} in Application.xml in the StorageDir element, I can see it translates to the value of VHost.

When using for RTSPBindIpAddress element it does not:

INFO server comment - RTPUDPTransport.unbind[demo/definst]: ${com.wowza.wms.context.VHost}:6970

Is there no way at all to set these RTSP addresses using a variable?

Actually, is this not more like a design issue?

Wouldn’t it be more logical to make these RTSP settings configurable at vhost or server level?

5

There is not the system variables that you are looking for as far as I know.

On a Wowza devpay EC2 instance there are EC2 variables that include this data.

Richard

6

You can make configurable variables for application, vhost or server by adding Property settings to the Properties list of an Application.xml, VHost.xml or the Server.xml,

<Property>
	<Name>var</Name>
	<Value>val</Value>
</Property>

Then use WMSProperties to get or set. For example:

IVHost vhost = VHostSingleton.getInstance(VHost.VHOST_DEFAULT);
vhost.getProperties().setProperty("var", "val");
String var = vhost.getProperties().getPropertyStr("var");

You can do get server reference and do same:

Server server = Server.getInstance();

Richard