MACROMEDIA FLASH MEDIA SERVER 2-CLIENT-SIDE ACTIONSCRIPT LANGUAGE REFERENCE FOR FLASH MEDIA SERVER 2 Instrukcja Użytkownika Pobierz pdf (Strona 169)

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SERVER-SIDE ACTIONSCRIPT LANGUAGE REFERENCE FOR ADOBE MEDIA SERVER 5.0.1

Server-Side ActionScript Language Reference

Last updated 7/2/2013

When you publish a stream, you can specify a query string in the stream path with parameters that specify how to

configure the live queue. Access the

publishQueryString property (for example, from inside the

application.onPublish() function) to access the query string. Parse the string to get the configuration parameters.

Use the values from the configuration parameters to set the

Stream.maxQueueDelay and Stream.maxQueueSize

properties.

Note: Flash Media Live Encoder 3 supports adding query strings to stream names. Earlier versions of Flash Media

Encoder did not support query strings.

Availability

Flash Media Server 3.5

Example

The following client-side code publishes a stream with a query string:

ns.publish

("exampleVideo?com.adobe.ams.maxQueueDelay=4000&com.adobe.ams.maxQueueSize=10240");

}

The following server-side code gets the query string, extracts the delay and size, and configures the live queue by setting

the

maxQueueDelay and maxQueueSize properties:

application.onPublish = function(clientObj, streamObj){

trace("queryString : " + streamObj.publishQueryString);

// the helper function extracQueryStringArg() is defined below

delay = extractQueryStringArg(streamObj.pubishQueryString, "com.adobe.ams.maxQueueDelay");

size = extractQueryStringArg(streamObj.publishQueryString, "com.adobe.ams.maxQueueSize");

trace("old maxQueueDelay : " + streamObj.maxQueueDelay);

streamObj.maxQueueDelay = delay;

trace("new maxQueueDelay : " + streamObj.maxQueueDelay);

trace("old maxQueueSize : " + streamObj.maxQueueSize);

streamObj.maxQueueSize = size;

trace("new maxQueueSize : " + streamObj.maxQueueSize);

}

function extractQueryStringArg(queryString, arg)

{

var retVal = "";

temp = arg + "=";

i = queryString.indexOf(temp);

if (i != 0)

{

temp = "&" + arg + "=";

i = queryString.indexOf(temp);

}

if (i != -1)

{

retVal = queryString.substr(i+temp.length);

i = retVal.indexOf("&");

if (i != -1)

{

retVal = retVal.substr(0, i);

}

return retVal;

}

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