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Mikeage
Asked: 2010-10-15 00:32:59 +0800 CST

Debugging UPnP / DLNA via Wireshark

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Is there any way to parse / interpret the XMLs sent as part of a DLNA / UPnP using Wireshark, or any other network sniffer?

I can get the raw packets, but it would be nice to see them parsed, to make debugging easier.

xml wireshark packet-sniffer upnp

3 Answers

  1. Best Answer

    look at this sample of PS3 <--> XP

    http://www.braham.org/playfile.txt

    1. filter 'tcp.port == 2869 && http.response' and
    2. right click decode as HTTP
    3. all the http that has: 'Content-Type: text/xml' in their header show the xml just fine

    if you have code that send xml in http without say so in the header, it's not nice...

    (in the this sample only "/ContentDirectory/scpd.xml" is being sent without content type)

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  2. Wireshark can reassemble packets to show you a complete view of a stream. Have a look at the docs. This will help you to look at the XML. It wont provide an analysis specific to DLNA.

    If you want a nice view of the XML, I dont think Wireshark will do it directly, but if you copy / paste it in any good XML editor, it should do the trick. Even saving the XML as a fiel and opening it with Firefox or IE will do the trick.

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  3. Well, wireshark or MS sniffer should dissect UPnP packets, and probably DLNA too.

    Having packets dissected as a tree of information helps but it might not be trivial to see what's really happening there, and might require you to learn a bit about the protocols in order to debug the problems you may be having.

    Have patience.

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