I've got soap in my udp?

Question

I have a LV 2011 compiled application running on a private network talking to a microcontroller, 
While using the LV UDP write/read functions (command, response), I occasionally get what looks like a soap services discovery message in our data stream.  It cant possibly be from the microcontroller and I can only conclude its originating in the application or runtime itself?  The application has no web services vi's or related in the project, I do open and close the UDP port on every command / responce.
Example:
Sent Command: "GET,MSG,1,:34bc9d"
Received: "</wsa:MessageID></soap:Header><soap:Body><wsdrobe><wsd:Types>wsdpevice</wsd:Types></wsdrobe></soap:Body></soap:Envelope>1€
76D1
Ùãsvelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" xmlns:wsd="http://schemas.xmlsoap.org/ws/2005/04/discovery" xmlns:wsdp=458515949:ata:4B-41-60-00-37-12-00-00
ParsedMsgObj: 1 MsgId: 1458 Mask: 0 Len: 8 ptrData: 536871184 uTime: 3382654
Flags->394
:255406297"
What should have been received: "Data:4B-41-60-00-37-12-00-00 ParsedMsgObj: 1 MsgId: 1458 Mask: 0 Len: 8 ptrData: 536871184 uTime: 3382654 Flags->394 :255406297"
Whats intersting is that the data I am looking for is there, at the end but polluted.
It feels to me like something in the default build profile is getting turned on? Is there something I can turn off at the build stage? This does not occur in the development environment.
Environment:
Win7 (only running the LV app and runtime - no 3rd party software is installed, and I have pruned windows services to the minimum, no firewall, Ive accounted for all running threads)
Private, non routed network.
2011 32bit, 
udp port 824

Answer 1

Wolfeman, 
After conferring with my resources, I would like to ask if it is possible that your buffer size is set to be much larger than the receive message you expect? If so, you may be unexpectedly receiving data from an unrelated web service in your receive message which we may be able to filter out by using a smaller buffer. You may also use Wireshark, a packet analyzer, to capture a log file of the packets being sent/received by your system which may help us to locate the problem. As a last resort, you may also consider simply adding in a filter that can run inside your code to look for the particular SOAP framework messages being added in to your receive message if it appears to be the same every time. Please let me know how changing the buffer size effects the behavior of this VI and we can determine how to proceed from there. Have a great day!
On a related note, I've also found this blog post that seems to have some of the same characteristics as what you are experiencing. While the details of the issue are slightly different, they both deal with an inconsistency happening when using UDP and a microcontroller. 
Wes W
Application Engineering
National Instruments
www.ni.com/support