AyushShende2679/DPI-System ? reverse-engineered prompt

Build me a C++17 deep packet inspection tool that reads a PCAP file, inspects the packets, and figures out the destination app or domain from TLS SNI and HTTP Host headers.

I want it to keep track of each connection by 5 tuple, apply simple blocking rules for app name, domain pattern, or IP address, and write the allowed traffic back out to a new PCAP file. Please include both a simple single threaded version and a faster multithreaded version that uses a load balancer and worker threads.

Make it easy to run on Windows, with a simple build script and a sample test capture I can try right away. If you need to check any current docs or compiler details while wiring it up, go ahead and look them up online.