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dlna_http [2014/08/16 04:14] – created beandogdlna_http [2014/08/16 04:47] (current) – beandog
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 My **working notes** on looking at DLNA headers.  Specific to my setup (minidlna, Sony BDP) only -- using the wiki as a location to keep notes.  Not meant to be useful for people who are not me. :) My **working notes** on looking at DLNA headers.  Specific to my setup (minidlna, Sony BDP) only -- using the wiki as a location to keep notes.  Not meant to be useful for people who are not me. :)
 +
 +Source: Episode ID 2002, 445063149 bytes, 425 MB
  
 ** Getcontentfeatures.Dlna.Org ** ** Getcontentfeatures.Dlna.Org **
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 Getcontentfeatures.Dlna.Org: 1 Getcontentfeatures.Dlna.Org: 1
 </code> </code>
 +
 +Response from DLNA server is this:
 +
 +<code>
 +Contentfeatures.Dlna.Org: DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.ORG_FLAGS=01700000000000000000000000000000
 +</code>
 +
 +Using libdlna as a [[http://libdlna.sourcearchive.com/documentation/0.2.3/dlna_8h-source.html|reference]], it means that mine supports HTTP Range requests.
 +
 +<code>
 +/* DLNA.ORG_OP: operations parameter (string)
 + *     "00" (or "0") neither time seek range nor range supported
 + *     "01" range supported
 + *     "10" time seek range supported
 + *     "11" both time seek range and range supported
 + */
 +</code>
 +
 +  * ** DLNA.ORG_OP=01 ** HTTP Range requests supported
 +  * ** DLNA.ORG_CI=0 ** media is not transcoded
 +  * ** DLNA.ORG_FLAGS=01700000 plus 24 trailing zeroes**: ''dlnaVersion15Supported'', ''connectionStallingSupported'', ''backgroundTransferModeSupported'', ''streamingTransferModeSupported''
 +    * Supports DLNA version 1.5 (2006 spec)
 +
 +** HEAD Requests **
 +
 +Worth noting that the DLNA client sends three total HEAD requests.  They are identical, except the first one also includes a ''User-Agent'' string:
 +
 +<code>
 +User-Agent: UPnP/1.0 DLNADOC/1.50
 +</code>
 +
 +<code>
 +Request Method: HEAD
 +Request Url: /MediaItems/224.mkv
 +User-Agent: UPnP/1.0 DLNADOC/1.50
 +Host: 10.10.10.103:8200
 +Accept: */*
 +X-Av-Physical-Unit-Info: pa="Blu-ray Disc Player"
 +X-Av-Client-Info: av=5.0; cn="Sony Corporation"; mn="Blu-ray Disc Player"; mv="2.0"
 +Getcontentfeatures.Dlna.Org: 1
 +</code>
 +
 +** realTimeInfo.dlna.org: DLNA.ORG_TLAG=* **
 +
 +minidlna always sends the header, safe to ignore it (see upnphttp.c)

Trace: • netbsd • vpxenc • mp4box

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