/// <summary>Returns the <see cref="T:System.Net.NetworkCredential" /> instance associated with the specified host, port, and authentication protocol.</summary>
/// <returns>A <see cref="T:System.Net.NetworkCredential" /> or, if there is no matching credential in the cache, null.</returns>
/// <param name="host">A <see cref="T:System.String" /> that identifies the host computer.</param>
/// <param name="port">A <see cref="T:System.Int32" /> that specifies the port to connect to on <paramref name="host" />.</param>
/// <param name="authenticationType">A <see cref="T:System.String" /> that identifies the authentication scheme used when connecting to <paramref name="host" />. See Remarks.</param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="host" /> is null. -or- <paramref name="authType" /> is null. </exception>
/// <exception cref="T:System.ArgumentException">
/// <paramref name="authType" /> not an accepted value. See Remarks. -or-<paramref name="host" /> is equal to the empty string ("").</exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="port" /> is less than zero.</exception>
public NetworkCredential GetCredential(string host, int port, string authenticationType)
{
NetworkCredential result = null;
if (host == null || port < 0 || authenticationType == null)
{
return(null);
}
IDictionaryEnumerator enumerator = this.cacheForHost.GetEnumerator();
while (enumerator.MoveNext())
{
CredentialCache.CredentialCacheForHostKey credentialCacheForHostKey = enumerator.Key as CredentialCache.CredentialCacheForHostKey;
if (string.Compare(credentialCacheForHostKey.AuthType, authenticationType, true) == 0)
{
if (!(credentialCacheForHostKey.Host != host))
{
if (credentialCacheForHostKey.Port == port)
{
result = (NetworkCredential)enumerator.Value;
}
}
}
}
return(result);
}
public override bool Equals(object obj)
{
CredentialCache.CredentialCacheForHostKey credentialCacheForHostKey = obj as CredentialCache.CredentialCacheForHostKey;
return(credentialCacheForHostKey != null && this.hash == credentialCacheForHostKey.hash);
}