/// <summary>
/// Extends BeginSendTo so that when a state object is not needed, null does not need to be passed.
/// <example>
/// udpanysourcemulticastclient.BeginSendTo(buffer, offset, count, remoteEndPoint, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginSendTo(this UdpAnySourceMulticastClient udpanysourcemulticastclient, Byte[] buffer, Int32 offset, Int32 count, System.Net.IPEndPoint remoteEndPoint, AsyncCallback callback)
{
if (udpanysourcemulticastclient == null)
{
throw new ArgumentNullException("udpanysourcemulticastclient");
}
return(udpanysourcemulticastclient.BeginSendTo(buffer, offset, count, remoteEndPoint, callback, null));
}
public bool Send(Message message, IPEndPoint ep)
{
try
{
byte[] byteMessage = message.GetBytes();
client.BeginSendTo(byteMessage, 0, byteMessage.Length, ep, OnSendTo, null);
return(true);
}
catch (Exception)
{
return(false);
}
}
/// <summary>
/// Extends BeginSendTo so that buffer offset of 0 and call to Array.Length are not needed.
/// <example>
/// udpanysourcemulticastclient.BeginSendTo(buffer, remoteEndPoint, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginSendTo(this UdpAnySourceMulticastClient udpanysourcemulticastclient, Byte[] buffer, System.Net.IPEndPoint remoteEndPoint, AsyncCallback callback)
{
if (udpanysourcemulticastclient == null)
{
throw new ArgumentNullException("udpanysourcemulticastclient");
}
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
return(udpanysourcemulticastclient.BeginSendTo(buffer, 0, buffer.Length, remoteEndPoint, callback));
}
public async Task <IObservable <Message> > ResolveAsync(string protocol)
{
ushort requestId = CreateRequestId();
Message message = new Message(requestId);
message.Questions.Add(new Question(protocol));
byte[] byteMessage = message.GetBytes();
await Task.Factory.FromAsync(
(buffer, ep, callback, state) => client.BeginSendTo(buffer, 0, buffer.Length, ep, callback, state),
client.EndSendTo,
byteMessage,
EndPoint,
null);
return(this.answers.Where(x => x.ID == requestId || x.ID == 0));
}
