public SendAsyncResult(UdpOutputChannel channel, Message message, AsyncCallback callback, object state)
: base(callback, state)
{
this.channel = channel;
//obtain the transaction propagation token from the TransactionFlowProperty on the message
byte[] txPropToken = TransactionFlowProperty.Get(message);
this.messageBuffer = channel.EncodeMessage(message);
txmsgBuffer = TransactionMessageBuffer.WriteTransactionMessageBuffer(txPropToken, messageBuffer);
if ((long)txmsgBuffer.Length > channel.Factory.MaxPacketSize)
{
throw new CommunicationException("The output packet size is greater than the maximum size supported.");
}
try
{
IAsyncResult result = null;
try
{
result = channel.socket.BeginSendTo(txmsgBuffer, 0, txmsgBuffer.Length,
SocketFlags.None, channel.remoteEndPoint, new AsyncCallback(OnSend), this);
}
catch (SocketException socketException)
{
throw UdpChannelHelpers.ConvertTransferException(socketException);
}
if (!result.CompletedSynchronously)
{
return;
}
CompleteSend(result, true);
}
catch
{
CleanupBuffer();
throw;
}
}
public void Send(Message message)
{
if (message == null)
{
throw new ArgumentNullException("message");
}
base.ThrowIfDisposedOrNotOpen();
//obtain the transaction propagation token from the TransactionFlowProperty on the message
byte[] txPropToken = TransactionFlowProperty.Get(message);
ArraySegment <byte> messageBuffer = EncodeMessage(message);
byte[] txmsgBuffer = TransactionMessageBuffer.WriteTransactionMessageBuffer(txPropToken, messageBuffer);
if ((long)txmsgBuffer.Length > this.Factory.MaxPacketSize)
{
throw new CommunicationException("The output packet size is greater than the maximum size supported.");
}
try
{
int bytesSent = this.socket.SendTo(txmsgBuffer, 0, txmsgBuffer.Length,
SocketFlags.None, this.remoteEndPoint);
if (bytesSent != txmsgBuffer.Length)
{
throw new CommunicationException(string.Format(CultureInfo.CurrentCulture,
"A Udp error occurred sending a message to {0}.", this.remoteEndPoint));
}
}
catch (SocketException socketException)
{
throw UdpChannelHelpers.ConvertTransferException(socketException);
}
finally
{
// we need to make sure buffers are always returned to the BufferManager
parent.BufferManager.ReturnBuffer(messageBuffer.Array);
}
}