Function http_guest::hostcalls::raw::hostcall_req_get_header

pub unsafe extern "C" fn hostcall_req_get_header(
    values_ptr_p: *mut *mut GuestSlice<u8>, 
    values_len_p: *mut usize, 
    req: i32, 
    name_ptr: *const u8, 
    name_len: usize
)