Function winapi::um::wininet::HttpSendRequestExA

pub unsafe extern "system" fn HttpSendRequestExA(
    hRequest: HINTERNET, 
    lpBuffersIn: LPINTERNET_BUFFERSA, 
    lpBuffersOut: LPINTERNET_BUFFERSA, 
    dwFlags: DWORD, 
    dwContext: DWORD_PTR
) -> BOOL