Android Client - Windows Server Application Set with WiFi Connection

Task: Build a simple data value application, capable of sending strings from client to server and vice versa via WiFi connection. Server might as well simply echo back all incoming strings for now. Client and server are on the same network. For a more complex project I need a working example *with sources* of the specified client-server-application: Android client: - working from Gingerbread (API 10) up to JellyBean (API 17) - written in JAVA - capable of searching for server in current network Windows server: - working from Windows XP up to Windows8 - preferable written in C++ - NO JAVA Feel free to use open-source libraries if you include all licenses as well.