I had this same problem, but here is the solution that I came up with. As wilbur4321 said, you have to send something to the socket first. Also, not only do you need to just call SendToAsync and forget about it, you must wait for it (max of 1 second seems to work for me).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.