/// <summary>
/// Constructor
/// </summary>
/// <exception cref="System.InvalidOperationException">This is thrown
/// if <see cref="Curl"/> hasn't bee properly initialized.</exception>
/// <exception cref="System.NullReferenceException">
/// This is thrown if the native <c>Multi</c> handle wasn't
/// created successfully.
/// </exception>
public Multi()
{
Curl.EnsureCurl();
m_pMulti = External.curl_multi_init();
EnsureHandle();
m_fdSets = IntPtr.Zero;
m_maxFD = 0;
m_fdSets = External.curl_shim_alloc_fd_sets();
m_multiInfo = null;
m_bGotMultiInfo = false;
m_htEasy = new Hashtable();
}