SWF verification behind a reverse proxy cache

Hello Johan,

Is in your case drm is embedded inside the f4m??

HLS-VOD

Set the TTL for your f4m to max equal to an interval at which you are expecting the swf hashes to update.

For example, if you expect, you may add/remove swf hashes at interval of say 1 hr, then set the TTL for the f4m as say 50 min (10 min taken as allowed error in your estimation of swf hash update).

You may set HttpStreamingF4MMaxAge under hds-vod (if that is hds vod case) as per your required TTL. Most proxy cashes should ideally respect the TTL dictated by origin response an should re-request the f4m after that period.

HDS-LIVE

Otherwise if this is hds-live case, then I don't think drm is embedded into the f4m. Just verify. Drm is a serperate request. In that case, you can set TTL on drm (HttpStreamingDrmmetaMaxAge) request also under hls-live in httpd.conf.

Read more about these configs http://help.adobe.com/en_US/flashmediaserver/devguide/WSd391de4d9c7bd609a95b3f112a373a7115-7fff.html#WSae20eaa80bf612516499f756131e06fb583-7fff

You can also set the drm update interval time in the recording section of the  application.xml as per your need. Read more about the config at http://help.adobe.com/en_US/flashmediaserver/devguide/WSd391de4d9c7bd609a95b3f112a373a7115-7fff.html#WSc1a546382286f18f-4a910076130ddc59d17-7ffe . Config setting will only update drm on the disk. But you will still have to set the proper TTL in Apache httpd.conf for the request of the DRM to be sent by the proxy to the origin to fetch it.

-Nitin