DLNA HTTP Requests

• DLNA
• DLNA HTTP

I'm examining the HTTP traffic sent back-and-forth between the DLNA server (minidlna in my case) and the DLNA client (Sony Blu-ray player).

Here's some of my notes on them.

Source for headers is playback of a file up until the first 60 seconds.

Logging the first run:

sudo tcpflow -p -c port 8200 > log.firstrun-60s

Clean up the data:

dos2unix log.firstrun-60s

Some PHP code to help me examine the content closely (which I'm not going to apologize for the quality, since I'm debugging). Requires the PECL http extension.

<?php
 
	$str = file_get_contents("log.firstrun-60s");
	$contents = explode("\n", $str);
 
	$count = 0;
	$key = 0;
	$headers = array();
 
	foreach($contents as $str) {
 
		if(strpos($str, "HTTP/1.1") !== false) {
			$key++;
			$arr = explode(":", $str);
			array_shift($arr);
			$str = implode(":", $arr);
		}
 
		$arr_content_headers[$key][] = $str;
 
	}
 
	foreach($arr_content_headers as $arr) {
		$headers[] = implode("\n", $arr);
	}
 
	foreach($headers as $key => $http_headers) {
 
		$arr_headers = http_parse_headers($http_headers);
 
		if($arr_headers === false) {
			$count++;
		} else {
			print_r($arr_headers);
		}
 
	}
 
	if($count)
		echo "$count failed\n";

And the first two HTTP requests:

Array
(
    [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
)
Array
(
    [Response Code] => 200
    [Response Status] => OK
    [Content-Type] => video/x-matroska
    [Content-Length] => 445063149
    [Transfermode.Dlna.Org] => Streaming
    [Accept-Ranges] => bytes
    [Connection] => close
    [Date] => Sat, 16 Aug 2014 02:15:10 GMT
    [Ext] => 
    [Realtimeinfo.Dlna.Org] => DLNA.ORG_TLAG=*
    [Contentfeatures.Dlna.Org] => DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.ORG_FLAGS=01700000000000000000000000000000
    [Server] => 3.12.5-ck DLNADOC/1.50 UPnP/1.0 MiniDLNA/1.1.1
)