/// <summary>
/// Try to begin receive messages
/// </summary>
/// <param name="ccs">indicating the channel and the client</param>
/// <returns>if the operation completed synchronously</returns>
protected override bool TryToBeginReceive(ChannelClientState ccs)
{
IDuplexSessionChannel channel = (IDuplexSessionChannel)ccs.Channel;
BrokerClient client = ccs.Client;
IAsyncResult ar = null;
try
{
ar = channel.BeginReceive(this.receiveRequest, ccs);
}
catch (Exception e)
{
BrokerTracing.TraceEvent(TraceEventType.Information, 0, "[DuplexFrontEnd] Exception throwed while begin receive messages: {0}", e);
// Channel must be in falted state
lock (channel)
{
if (channel.State == CommunicationState.Faulted)
{
BrokerTracing.TraceEvent(TraceEventType.Information, 0, "[DuplexFrontEnd] About the channel.");
this.FrontendDisconnect(channel, client);
// About the falted channel
channel.Abort();
}
}
return(false);
}
return(ar.CompletedSynchronously && channel.State == CommunicationState.Opened);
}
private void StartBackgroundReceive(IDuplexSessionChannel channel)
{
if (this.onReceive == null)
{
this.onReceive = Fx.ThunkCallback(new AsyncCallback(this.OnReceive));
}
channel.BeginReceive(TimeSpan.MaxValue, this.onReceive, channel);
}
public IAsyncResult BeginReceive(TimeSpan timeout,
AsyncCallback callback, object state)
{
return(innerDuplexSessionChannel.BeginReceive(timeout,
callback, state));
}
