/// <summary>
/// Extract <c>Slist</c> information from an <c>Easy</c> object.
/// </summary>
/// <param name="info">One of the values in the
/// <see cref="CURLINFO"/> enumeration. In this case, it must
/// specifically be one of the members that obtains an <c>Slist</c>.
/// </param>
/// <param name="slist">Reference to an <c>Slist</c> value.</param>
/// <returns>The <see cref="CURLcode"/> obtained from the internal
/// call to <c>curl_easy_getinfo()</c>.
/// </returns>
/// <exception cref="System.NullReferenceException">This is thrown if
/// the native <c>CURL*</c> handle wasn't created successfully.</exception>
public CURLcode GetInfo(CURLINFO info, ref Slist slist)
{
EnsureHandle();
CURLcode retCode = CURLcode.CURLE_OK;
IntPtr ptr = IntPtr.Zero, ptrs = IntPtr.Zero;
if ((int)info < CURLINFO_SLIST)
{
return(CURLcode.CURLE_BAD_FUNCTION_ARGUMENT);
}
retCode = External.curl_easy_getinfo(m_pCURL, info, ref ptr);
if (retCode != CURLcode.CURLE_OK)
{
return(retCode);
}
slist = new Slist();
while (ptr != IntPtr.Zero)
{
ptr = External.curl_shim_get_string_from_slist(
ptr, ref ptrs);
slist.Append(Marshal.PtrToStringAnsi(ptrs));
}
return(retCode);
}
