Which technic, model are used to transfer signal from webcam to PC via wifi?

Question

I want to code C# to create simple application about send/receive signal camera(webcam) between 2 laptop. More details, I have 2 laptop, with laptop 1 is turn on its webcam and sending picture(signal - i dont know which words can descripe it, hope you know what I mean) from laptop 1 to laptop 2 via wifi.
I spend a couple day try to turn on webcam on laptop 1, but it doesn't (I'm using Microsoft Expression Encoder 4 library, I heard that DirectShowLib can do that).
p/s: sorry for my english  hope you understand my question  .