private IDisposable StartHost()
{
return((from client in ObservableTcpListener.Start(IPAddress.Loopback, port, maxConcurrent: 1).Take(1)
from _ in Observable.Using(
() => client.GetStream(),
stream => Observable.Create <Unit>((observer, cancel) => SendData(stream, observer, cancel)))
select Unit.Default)
.Subscribe(_ => { }, () => TraceStatus("Host Completed.")));
}
protected override void Main()
{
var endPoint = new IPEndPoint(IPAddress.Loopback, 15005);
IObservable <int> clientQuery = Observable.Using(
() => new TcpClient(),
client => from _ in client.ConnectObservable(endPoint.Address, endPoint.Port)
let socket = client.Client
let message = Encoding.UTF8.GetBytes(Text.Rock + Text.Scissors + Text.Paper)
from __ in socket.SendUntilCompleted(message, 0, message.Length, SocketFlags.None)
select message.Length);
IObservable <string> serverQuery =
from client in ObservableTcpListener.Start(endPoint)
.Synchronize()
.Take(1)
.Do(_ =>
{
TraceLine(Text.ServerReceivedRequest);
PressAnyKeyToContinue();
})
let stream = new NetworkStream(client.Client, ownsSocket: false)
from buffer in Observable.Using(
() => client,
_ => stream.ReadToEndObservable().SelectMany(b => b).ToArray())
let message = Encoding.UTF8.GetString(buffer)
select message;
using (var responded = new System.Threading.ManualResetEvent(false))
using (serverQuery.Finally(() => responded.Set()).Subscribe(ConsoleOutput(Text.Server)))
using (clientQuery.Subscribe(ConsoleOutputFormat(Text.Client, Text.SentBytesFormat)))
{
responded.WaitOne();
}
}
private void StartListeningAway()
{
this.serverSubscription = ObservableTcpListener.Start(this.CurrentNetworkInterface.Item2, 443, 1)
.Subscribe(OnAwayClientConnected);
}
private static IObservable <TcpClientTermination> CreateService <TSource, TResult>(
IPEndPoint endPoint,
Func <IRemotingFormatter> formatterFactory,
QbservableServiceOptions options,
Func <IObservable <TSource>, IQbservable <TResult> > service)
{
return(ObservableTcpListener
.Start(endPoint, maxConcurrent: 1) // maxConcurrent must be 1 to ensure thread-safety. See the Start method's remarks for details.
.SelectMany(client => Observable
.StartAsync(async cancel =>
{
var watch = Stopwatch.StartNew();
// disable Nagle algorithm so that observed events are sent as soon as they happen
client.NoDelay = true;
var localEndPoint = client.Client.LocalEndPoint;
var remoteEndPoint = client.Client.RemoteEndPoint;
var exceptions = new List <ExceptionDispatchInfo>();
var shutDownReason = QbservableProtocolShutDownReason.None;
try
{
using (var stream = client.GetStream())
using (var protocol = await QbservableProtocol.NegotiateServerAsync(stream, formatterFactory(), options, cancel).ConfigureAwait(false))
{
var provider = new TcpServerQbservableProvider <TResult>(
protocol,
options,
argument =>
{
if (argument == null && typeof(TSource).IsValueType)
{
return service(Observable.Return(default(TSource)));
}
else
{
return service(Observable.Return((TSource)argument));
}
});
try
{
await protocol.ExecuteServerAsync(provider).ConfigureAwait(false);
}
catch (OperationCanceledException)
{
}
catch (Exception ex)
{
exceptions.Add(ExceptionDispatchInfo.Capture(ex));
}
var protocolExceptions = protocol.Exceptions;
if (protocolExceptions != null)
{
foreach (var exception in protocolExceptions)
{
exceptions.Add(exception);
}
}
shutDownReason = protocol.ShutDownReason;
}
}
catch (OperationCanceledException)
{
shutDownReason = QbservableProtocolShutDownReason.ProtocolNegotiationCancelled;
}
catch (Exception ex)
{
shutDownReason = QbservableProtocolShutDownReason.ProtocolNegotiationError;
exceptions.Add(ExceptionDispatchInfo.Capture(ex));
}
return new TcpClientTermination(localEndPoint, remoteEndPoint, watch.Elapsed, shutDownReason, exceptions);
})
.Finally(client.Close)));
}
