/// <summary>Ends an asynchronous request for DNS information.</summary>
/// <returns>An array of type <see cref="T:System.Net.IPAddress" /> that holds the IP addresses for the host specified by the <paramref name="hostNameOrAddress" /> parameter of <see cref="M:System.Net.Dns.BeginGetHostAddresses(System.String,System.AsyncCallback,System.Object)" />.</returns>
/// <param name="asyncResult">An <see cref="T:System.IAsyncResult" /> instance returned by a call to the <see cref="M:System.Net.Dns.BeginGetHostAddresses(System.String,System.AsyncCallback,System.Object)" /> method.</param>
public static IPAddress[] EndGetHostAddresses(IAsyncResult asyncResult)
{
if (asyncResult == null)
{
throw new ArgumentNullException("asyncResult");
}
AsyncResult asyncResult2 = (AsyncResult)asyncResult;
GetHostAddressesCallback getHostAddressesCallback = (GetHostAddressesCallback)asyncResult2.AsyncDelegate;
return(getHostAddressesCallback.EndInvoke(asyncResult));
}
public static IAsyncResult BeginGetHostAddresses(string hostName,
AsyncCallback requestCallback, object stateObject)
{
if (hostName == null)
{
throw new ArgumentNullException("hostName");
}
GetHostAddressesCallback c = new GetHostAddressesCallback(GetHostAddresses);
return(c.BeginInvoke(hostName, requestCallback, stateObject));
}
/// <summary>Asynchronously returns the Internet Protocol (IP) addresses for the specified host.</summary>
/// <returns>An <see cref="T:System.IAsyncResult" /> instance that references the asynchronous request.</returns>
/// <param name="hostNameOrAddress">The host name or IP address to resolve.</param>
/// <param name="requestCallback">An <see cref="T:System.AsyncCallback" /> delegate that references the method to invoke when the operation is complete. </param>
/// <param name="state">A user-defined object that contains information about the operation. This object is passed to the <paramref name="requestCallback" /> delegate when the operation is complete.</param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="hostNameOrAddress" /> is null. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">The length of <paramref name="hostNameOrAddress" /> is greater than 126 characters. </exception>
/// <exception cref="T:System.Net.Sockets.SocketException">An error is encountered when resolving <paramref name="hostNameOrAddress" />. </exception>
/// <exception cref="T:System.ArgumentException">
/// <paramref name="hostNameOrAddress" /> is an invalid IP address.</exception>
public static IAsyncResult BeginGetHostAddresses(string hostNameOrAddress, AsyncCallback requestCallback, object stateObject)
{
if (hostNameOrAddress == null)
{
throw new ArgumentNullException("hostName");
}
if (hostNameOrAddress == "0.0.0.0" || hostNameOrAddress == "::0")
{
throw new ArgumentException("Addresses 0.0.0.0 (IPv4) and ::0 (IPv6) are unspecified addresses. You cannot use them as target address.", "hostNameOrAddress");
}
GetHostAddressesCallback getHostAddressesCallback = GetHostAddresses;
return(getHostAddressesCallback.BeginInvoke(hostNameOrAddress, requestCallback, stateObject));
}
public static IAsyncResult BeginGetHostAddresses (string hostNameOrAddress,
AsyncCallback requestCallback, object state)
{
if (hostNameOrAddress == null)
throw new ArgumentNullException ("hostName");
if (hostNameOrAddress == "0.0.0.0" || hostNameOrAddress == "::0")
throw new ArgumentException ("Addresses 0.0.0.0 (IPv4) " +
"and ::0 (IPv6) are unspecified addresses. You " +
"cannot use them as target address.",
"hostNameOrAddress");
GetHostAddressesCallback c = new GetHostAddressesCallback (GetHostAddresses);
return c.BeginInvoke (hostNameOrAddress, requestCallback, state);
}
public static IPAddress [] EndGetHostAddresses(IAsyncResult asyncResult)
{
if (asyncResult == null)
{
throw new ArgumentNullException("asyncResult");
}
if (use_mono_dns)
{
IPHostEntry entry = EndAsyncCall(asyncResult as DnsAsyncResult);
if (entry == null)
{
return(null);
}
return(entry.AddressList);
}
AsyncResult async = (AsyncResult)asyncResult;
GetHostAddressesCallback cb = (GetHostAddressesCallback)async.AsyncDelegate;
return(cb.EndInvoke(asyncResult));
}
public static IAsyncResult BeginGetHostAddresses(string hostNameOrAddress, AsyncCallback requestCallback, object state)
{
if (hostNameOrAddress == null)
{
throw new ArgumentNullException("hostName");
}
if (hostNameOrAddress == "0.0.0.0" || hostNameOrAddress == "::0")
{
throw new ArgumentException("Addresses 0.0.0.0 (IPv4) " +
"and ::0 (IPv6) are unspecified addresses. You " +
"cannot use them as target address.",
"hostNameOrAddress");
}
#if !MOBILE
if (use_mono_dns)
{
return(BeginAsyncCallAddresses(hostNameOrAddress, requestCallback, state));
}
#endif
GetHostAddressesCallback c = new GetHostAddressesCallback(GetHostAddresses);
return(c.BeginInvoke(hostNameOrAddress, requestCallback, state));
}