receiving NET SEND messages in an C# application

4thhorseman · November 5th, 2009, 05:50 PM

Hallo one more time,

I want to store incomming NET SEND messages.

Storing isn't the problem, but retrieving those messages. I read about older functions 'FindWindow' and 'FindWindowEx'. Is this the only way to retrieve (get) a NET SEND message?

Best regards and thanx in advance.

samjudson · November 6th, 2009, 06:04 AM

I'm sure in theory this is possible, but you would have to a) stop the standard Messenger service that receives the messages, b) Implement your own code that used the NETBIOS protocol to receive the messages and then store them.

http://en.wikipedia.org/wiki/Messenger_service

Good luck.

4thhorseman · November 6th, 2009, 04:10 PM

Hi Sam,

thank you for your reply.

Do I include the API with Dllimport? If so, what is the correct syntax? Do you know any functions that might help to access net send messages, too?
What if the messanger has to stay activated due to the reason that it sends messeges to the local (current) machine, so that the sender is the recipient?

Thank you one more time.

4thhorseman · November 13th, 2009, 09:09 AM

Hi again,

I found a list of netapi32 functions but there are 322 of them.

I found the #net send equivalent NetMessageBufferSend, but I can't find a function that receives messages. Has anybody an idea?

samjudson · November 14th, 2009, 09:41 AM

I have no more information to help you than I originally posted. You are basically trying to impersonate the Messenger service, so I'm not surprised this is not documented.