hello, I have been trying to make a host/client program that the client program would just transport a integer to the host software. I am using two different computers, they are both windows 7, one is ultimate and the other is home edition (both 64-bit). I am using a local wi-fi connect. Can anyone see an error that I just can not see, thank you in advance!

p.s. the source code for server & client are an attachment.