public unsafe static extern int curl_easy_setopt( SafeCurlHandle curl, int option, curl_unsafe_write_callback callback);
public unsafe static extern int curl_easy_setopt( SafeCurlHandle curl, int option, curl_unsafe_write_callback callback);
public unsafe static extern int curl_easy_setopt( SafeCurlHandle curl, int option, curl_unsafe_write_callback callback);
public unsafe static extern int curl_easy_setopt( SafeCurlHandle curl, int option, curl_unsafe_write_callback callback);