A simple screencast application (client and server) with SDL2 and Winsock. The server is to be run on the machine whose screen is to be broadcasted, which takes a screenshot every second.
Currently it seems to work fairly well, but the client window is set to be at 600 x 400 size, which is something to fix. I also haven't tested with multiple clients and I also don't have a reliable UDP set up and have a poor messaging system set up + no respect for byte order between network and host (but packet loss doesn't seem too significant when testing locally), which are some additional things to address later. There is a basic menu screen that allows the user to input the ip address of a computer to stream from (i.e. the server).
client view (from my desktop)
server.exe (from my laptop)
I highly recommend using WinLibs (https://winlibs.com/) now but I started this project using MinGW (gcc 6.3.0) so that should work as well. You'll also need MSYS to run make and SDL2 + SDL2-ttf. Modify the paths for gdiplus and SDL2 in the makefile and running make should build the executables.