/// <summary>
/// Ends an asynchronous operation to send the a <see cref="AK.Net.Dns.DnsQuery"/>
/// to an end point and return the <see cref="AK.Net.Dns.DnsReply"/>.
/// </summary>
/// <param name="iar">The asynchronous operation result.</param>
/// <returns>
/// The <see cref="AK.Net.Dns.DnsReply"/> to the <see cref="AK.Net.Dns.DnsQuery"/>.
/// </returns>
/// <exception cref="System.ArgumentNullException">
/// Thrown when <paramref name="iar"/> is <see langword="null"/>.
/// </exception>
/// <exception cref="System.ArgumentException">
/// Thrown when the specified async result does not belong to this operation.
/// </exception>
/// <exception cref="System.InvalidOperationException">
/// Thrown when <see cref="AK.Net.Dns.IDnsTransport.EndSend(System.IAsyncResult)"/>
/// has already been called on the specified async result.
/// </exception>
/// <exception cref="AK.Net.Dns.DnsTransportException">
/// Thrown when a transport error occurred during the asynchronous operation.
/// </exception>
public virtual DnsReply EndSend(IAsyncResult iar)
{
Guard.NotNull(iar, "iar");
SendAsyncState state = iar as SendAsyncState;
if (state == null)
{
throw Guard.InvalidAsyncResult("iar");
}
state.OnEndCalled();
return(state.Result);
}
