What C/C++ library do I use to change an HTTP packet in windows?

Question

It seems winpcap can't be used to do this kind of job(ref),

then which library to use alternatively?

Answer 1

This is very interesting. Look what I found here

A Layered Service Provider (LSP) is a feature of the Microsoft Windows Winsock 2 Service Provider Interface (SPI). A Layered Service Provider is a DLL that uses Winsock APIs to insert itself into the TCP/IP stack. Once in the stack, a Layered Service Provider can intercept and modify inbound and outbound Internet traffic.