IP UDP Packet Encoding

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ZeroEffect

Junior Contributor
Joined
Oct 24, 2004
Messages
204
Location
Detroit, MI
I have a piece of equipment I need to send data to in the form of a UDP packet, But the packet has a specific header and other information. I can capture a sample packet but I'm not 100% sure how to decode it into what I need to know. Here is an example of the packet sent with no additional information added.

Visual Basic: 
127.0.0.1 : 1404 Length = 25 bytes : MD5 = BDD021E92EDE036451EAE709FF23D966
--- 07/20/2005 13:56:36.377
0000   00 00 0A 02 00 00 00 00 00 00 00 00 00 00 51 49      ..............QI
0010   44 33 03 00 00 00 00 00 00                           D3.......

and one with data added

Visual Basic: 
127.0.0.1 : 1405 Length = 86 bytes : MD5 = 3A2B6C5147E89AD3A2FA2F5EBFDFC701
--- 07/20/2005 13:58:46.974
0000   00 00 0A 02 00 00 00 00 00 00 00 00 00 00 51 49      ..............QI
0010   44 33 03 00 00 00 00 00 3D 54 50 45 31 00 00 00      D3......=TPE1...
0020   0B 00 00 00 74 68 65 20 61 72 74 69 73 74 54 49      ....the artistTI
0030   54 32 00 00 00 0A 00 00 00 74 68 65 20 74 69 74      T2.......the ***
0040   6C 65 54 41 4C 42 00 00 00 0A 00 00 00 74 68 65      leTALB.......the
0050   20 61 6C 62 75 6D                                     album

Basicly the packet is an ID3v2.3.0 tag as a upd packet with a different header. I am kind of answering my own question a bit but here is what I know. I have document that shows id3 message structure but I don't know how to set it up and send it as a UDP packet with the header I want.

Am I making sence? Any help would be great. I am looking through the MSDN as I type this. I am working with VB.Net.

Thanks for your time and help in this matter.

ZeroEffect
 
Thanks for all who stopped by, I was able to obtain a dll file from the company who maske the piece of equipment, they sent it to me :) so all is well.

Zeroeffect
 
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