This C++ program acts as a UDP to TCP (and vice versa) converter, using Windows Packet Filter to intercept and modify network packets.

After building the project, you can run the application with the following command:

./udp2tcp

The application will prompt you to select a network interface and specify the server or client mode as well as the UDP port number.

The application uses the Windows Packet Filter (WinpkFilter) library to intercept network packets. The load_filters function sets up three filters:

1. Incoming TCP packets with a specific port are redirected and processed to convert TCP to UDP.
2. Outgoing UDP packets with a specific port are redirected and processed to convert UDP to TCP.
3. All other packets are passed without processing in user mode.

In the main function, the application creates a simple_packet_filter object with two lambda functions. The first lambda function handles incoming TCP packets and converts them to UDP. The second lambda function handles outgoing UDP packets and converts them to TCP.