public async Task <bool> Start(string serverName, bool heartbeat)
{
if (communicationProtocol != null)
{
StopServer();
}
try
{
startCancellationTokenSource = new CancellationTokenSource();
communicationProtocol =
await NamedPipeCommunicationProtocol.Connect(serverName, streamFactory, log,
cancellationToken : startCancellationTokenSource.Token).ConfigureAwait(false);
}
catch (TaskCanceledException e)
{
log.LogError($"Connection to server was canceled.{Environment.NewLine}{e}");
communicationProtocol = null;
return(false);
}
finally
{
startCancellationTokenSource.Dispose();
startCancellationTokenSource = null;
}
if (communicationProtocol != null)
{
communicationProtocol.CommunicationError += CommunicationProtocolOnCommunicationError;
}
OnConnected(new ServerConnectedEventArgs(communicationProtocol, heartbeat));
communicationProtocol.Start();
return(true);
}
private async void StartAndWaitForInterProcessUpdateInternal()
{
try
{
while (!CancellationToken.IsCancellationRequested)
{
protocol?.Dispose();
log.LogVerbose($"Start other instance update receiver {serverName}.");
protocol = await NamedPipeCommunicationProtocol.Connect(serverName, streamFactory, log,
cancellationToken : CancellationToken).ConfigureAwait(false);
log.LogVerbose($"Other instance connected to the update receiver {serverName}.");
AsyncAutoResetEvent waitEvent = new AsyncAutoResetEvent(false);
protocol.CommunicationError += ProtocolOnError;
protocol.MessageReceived += ProtocolOnMessageReceived;
protocol.Start();
await waitEvent.WaitAsync(CancellationToken).ConfigureAwait(false);
void ProtocolOnError(object sender, EventArgs e)
{
protocol.FlushReceivedMessages();
protocol.CommunicationError -= ProtocolOnError;
protocol.MessageReceived -= ProtocolOnMessageReceived;
waitEvent.Set();
}
}
}
catch (Exception)
{
//Do not log anything as any log will lead to another exception
}
}
public OutgoingMessage(Guid id, Stream data, Action messageCompletedAction,
NamedPipeCommunicationProtocol communicationProtocol, ILog log,
PipeStream writeStream) : base(id, data, log)
{
this.messageCompletedAction = messageCompletedAction;
this.communicationProtocol = communicationProtocol;
this.writeStream = writeStream;
confirmationTimer.Elapsed += ConfirmationTimerOnElapsed;
}
public OutgoingMessageQueue(ILog log, PipeStream writeStream,
NamedPipeCommunicationProtocol communicationProtocol,
CancellationToken cancellationToken)
{
this.log = log;
this.cancellationToken = cancellationToken;
this.writeStream = writeStream;
this.communicationProtocol = communicationProtocol;
}
public IncomingMessageQueue(StreamFactory streamFactory, ILog log, PipeStream readStream,
NamedPipeCommunicationProtocol communicationProtocol,
OutgoingMessageQueue outgoingMessageQueue, CancellationToken cancellationToken)
{
this.streamFactory = streamFactory;
this.log = log;
this.readStream = readStream;
this.communicationProtocol = communicationProtocol;
this.cancellationToken = cancellationToken;
this.outgoingMessageQueue = outgoingMessageQueue;
}
public static async Task <NamedPipeInstanceCommunicationChannel> OpenChannel(
string serverAddress, StreamFactory streamFactory, IContainer parentContainer, ILog channelLog, CancellationToken cancellationToken)
{
ICommunicationProtocol protocol;
using (CancellationTokenSource timeout = new CancellationTokenSource(NamedPipeCommunicationProtocol.MaxConfirmationResponseTime))
using (CancellationTokenSource linkedSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, timeout.Token))
{
protocol = await NamedPipeCommunicationProtocol.Connect(serverAddress, streamFactory,
channelLog,
actAsClient : true, cancellationToken : linkedSource.Token).ConfigureAwait(false);
protocol.Start();
}
channelLog.LogVerbose($"Successfully connected to other instance server {serverAddress}.");
ILifetimeScope lifetimeScope = parentContainer.BeginLifetimeScope(builder =>
{
builder.RegisterInstance(channelLog).As <ILog>().SingleInstance();
builder.RegisterInstance(protocol).As <ICommunicationProtocol>().SingleInstance();
builder.RegisterInstance(new CommunicationSettings(false)).AsSelf();
});
return(new NamedPipeInstanceCommunicationChannel(lifetimeScope));
}
public static async Task <ICommunicationProtocol> Connect(string address, StreamFactory streamFactory,
ILog log,
bool actAsClient = false,
CancellationToken cancellationToken =
default(CancellationToken))
{
NamedPipeCommunicationProtocol result;
if (!actAsClient)
{
NamedPipeServerStream writeServer = new NamedPipeServerStream(Path.Combine(address, "server-output"), PipeDirection.InOut, 1,
PipeTransmissionMode.Byte,
PipeOptions.None);
NamedPipeServerStream readServer = new NamedPipeServerStream(Path.Combine(address, "server-input"), PipeDirection.InOut, 1,
PipeTransmissionMode.Byte,
PipeOptions.None);
await Task.WhenAll(readServer.WaitForConnectionAsync(cancellationToken),
writeServer.WaitForConnectionAsync(cancellationToken))
.ConfigureAwait(false);
result = new NamedPipeCommunicationProtocol(readServer, writeServer, streamFactory, new ServerNameLogDecorator(log, address, false));
}
else
{
NamedPipeClientStream writeClient = new NamedPipeClientStream(".", Path.Combine(address, "server-input"), PipeDirection.InOut,
PipeOptions.None);
NamedPipeClientStream readClient = new NamedPipeClientStream(".", Path.Combine(address, "server-output"), PipeDirection.InOut,
PipeOptions.None);
await Task.WhenAll(readClient.ConnectAsync(cancellationToken),
writeClient.ConnectAsync(cancellationToken))
.ConfigureAwait(false);
result = new NamedPipeCommunicationProtocol(readClient, writeClient, streamFactory, new ServerNameLogDecorator(log, address, true));
}
return(result);
}