Функция WinHttpReadData (winhttp.h) - Win32 - Microsoft Learn

Handles HTTP/1.1 and HTTP/2 by default in modern Windows versions. The WinHTTP Download Workflow

Unlike WinINet, it doesn't pop up credential or certificate dialogs, making it safe for system services.

Features robust auto-proxy discovery and WPAD support to navigate complex corporate networks.

: Initializes the API and returns a session handle. WinHttpConnect : Specifies the target server and port.