public static async Task Main(string[] args)
{
Console.WriteLine("Enter 'request' for request mode, else some other symbols");
var mode = Console.ReadLine();
if (mode == "request")
{
using (var request = new TCPRequest("127.0.0.1", 49999))
{
while (true)
{
var message = Console.ReadLine();
SendRequest(request, message);//left without await intentionally
Console.WriteLine("Request sent; waiting for reply asynchronously");
}
}
}
else
{
using (var con = new TCPConnection("127.0.0.1", 49999))
{
con.OnConnected += OnConnected;
con.OnReceive += OnReceive;
con.OnConnectionException += OnConnectionException;
await con.ConnectAsync();
while (true)
{
var message = Console.ReadLine();
await con.SendAsync(Encoding.UTF8.GetBytes(message));
}
}
}
}
internal void HandleRequest(TCPRequest request, byte[] dataReady)
{
byte[] data = new byte[dataReady.Length + DataIDs.PACKET_ID_COMPLEXITY];
data[0] = request.PacketID;
dataReady.CopyTo(data, DataIDs.PACKET_ID_COMPLEXITY);
connection.SendData(DataIDs.RESPONSE_RECEPTION_ID, connection.myInfo.ID, data);
}
internal void HandleRequest(TCPRequest request, object obj)
{
byte[] rawData = SimpleTCPHelper.GetBytesFromObject(obj, connection.serializationConfig);
HandleRequest(request, rawData);
}
private async Task ListenClient <TContext>(ConnectedSocket connectedSocket, IHttpApplication <TContext> application)
{
try
{
var client = connectedSocket.Socket;
var networkStream = new NetworkStream(client, false);
while (true)
{
using (var disposables = new CompositeDisposable())
{
var stream = new TCPStream(networkStream)
{
ArrayPool = Options.ArrayPool,
Cancellation = _Stopped.Token,
MaxArrayLength = Options.MaxBytesArrayLength,
MaxMessageSize = Options.MaxMessageSize
};
disposables.Children.Add(stream);
var idleTimeout = new CancellationTokenSource();
idleTimeout.CancelAfter(Options.IdleTimeout);
disposables.Children.Add(idleTimeout);
var linked = CancellationTokenSource.CreateLinkedTokenSource(stream.Cancellation, idleTimeout.Token);
disposables.Children.Add(linked);
stream.Cancellation = linked.Token;
var request = await TCPRequest.Parse(stream, Options.IncludeHeaders).ConfigureAwait(false);
disposables.Children.Add(connectedSocket.MarkProcessingRequest());
var context = (HostingApplication.Context)(object) application.CreateContext(Features);
context.HttpContext = new TCPContext(request, Features, new TCPConnectionInfo(client, _ListeningEndPoint));
await application.ProcessRequestAsync((TContext)(object)context);
CancellationTokenSource sendTimeout = new CancellationTokenSource();
sendTimeout.CancelAfter(Options.SendTimeout);
disposables.Children.Add(sendTimeout);
linked = CancellationTokenSource.CreateLinkedTokenSource(stream.Cancellation, sendTimeout.Token);
disposables.Children.Add(linked);
stream.Cancellation = linked.Token;
var response = (TCPResponse)context.HttpContext.Response;
try
{
response.OnStarting();
await stream.WriteVarIntAsync((ulong)response.StatusCode).ConfigureAwait(false);
if (Options.IncludeHeaders)
{
await stream.WriteVarIntAsync((ulong)response.Headers.Count).ConfigureAwait(false);
foreach (var header in response.Headers)
{
await stream.WriteStringAsync(header.Key).ConfigureAwait(false);
await stream.WriteStringAsync(header.Value).ConfigureAwait(false);
}
}
await stream.WriteVarIntAsync((ulong)response.Body.Length);
response.Body.Position = 0;
await response.Body.CopyToAsync(networkStream, 81920, stream.Cancellation).ConfigureAwait(false);
await networkStream.FlushAsync(stream.Cancellation).ConfigureAwait(false);
}
finally
{
response.OnCompleted();
connectedSocket.LastReceivedMessage = DateTimeOffset.UtcNow;
}
}
}
}
catch (OperationCanceledException)
{
if (!_Stopped.IsCancellationRequested)
{
throw;
}
}
finally
{
DisconnectClient(connectedSocket);
}
}
private async Task ListenClient <TContext>(ConnectedSocket connectedSocket, IHttpApplication <TContext> application)
{
bool exceptionHandled = false;
CancellationTokenSource idleTimeout = null;
CancellationTokenSource sendTimeout = null;
try
{
var client = connectedSocket.Socket;
var networkStream = new NetworkStream(client, false);
while (true)
{
using (var disposables = new CompositeDisposable())
{
var stream = new TCPStream(networkStream)
{
ArrayPool = Options.ArrayPool,
Cancellation = _Stopped.Token,
MaxArrayLength = Options.MaxBytesArrayLength,
MaxMessageSize = Options.MaxMessageSize
};
disposables.Children.Add(stream);
idleTimeout = new CancellationTokenSource();
idleTimeout.CancelAfter(Options.IdleTimeout);
disposables.Children.Add(idleTimeout);
var linked = CancellationTokenSource.CreateLinkedTokenSource(stream.Cancellation, idleTimeout.Token);
disposables.Children.Add(linked);
stream.Cancellation = linked.Token;
TCPRequest request = null;
try
{
request = await TCPRequest.Parse(stream, Options.IncludeHeaders).ConfigureAwait(false);
}
catch (Exception ex)
{
_Logger.LogWarning(new EventId(), ex, $"Error while parsing the request of {EndpointString(connectedSocket)}");
exceptionHandled = true;
throw;
}
disposables.Children.Add(connectedSocket.MarkProcessingRequest());
var context = (HostingApplication.Context)(object) application.CreateContext(Features);
context.HttpContext = new TCPContext(request, Features, new TCPConnectionInfo(client, _ListeningEndPoint));
try
{
await application.ProcessRequestAsync((TContext)(object)context);
}
catch (Exception ex)
{
_Logger.LogError(new EventId(), ex, "Error during request processing");
exceptionHandled = true;
throw;
}
sendTimeout = new CancellationTokenSource();
sendTimeout.CancelAfter(Options.SendTimeout);
disposables.Children.Add(sendTimeout);
linked = CancellationTokenSource.CreateLinkedTokenSource(stream.Cancellation, sendTimeout.Token);
disposables.Children.Add(linked);
stream.Cancellation = linked.Token;
var response = (TCPResponse)context.HttpContext.Response;
try
{
response.OnStarting();
await stream.WriteVarIntAsync((ulong)response.StatusCode).ConfigureAwait(false);
if (Options.IncludeHeaders)
{
await stream.WriteVarIntAsync((ulong)response.Headers.Count).ConfigureAwait(false);
foreach (var header in response.Headers)
{
await stream.WriteStringAsync(header.Key).ConfigureAwait(false);
await stream.WriteStringAsync(header.Value).ConfigureAwait(false);
}
}
await stream.WriteVarIntAsync((ulong)response.Body.Length);
response.Body.Position = 0;
await response.Body.CopyToAsync(networkStream, 81920, stream.Cancellation).ConfigureAwait(false);
await networkStream.FlushAsync(stream.Cancellation).ConfigureAwait(false);
}
finally
{
response.OnCompleted();
connectedSocket.LastReceivedMessage = DateTimeOffset.UtcNow;
}
}
}
}
catch (OperationCanceledException)
{
if (connectedSocket.Socket.Connected)
{
if (_Stopped.Token.IsCancellationRequested)
{
_Logger.LogInformation($"Connection to {EndpointString(connectedSocket)} stopped");
}
else if (idleTimeout != null && idleTimeout.IsCancellationRequested)
{
_Logger.LogWarning($"Connection idle detected, kicking {EndpointString(connectedSocket)}");
}
else if (sendTimeout != null && sendTimeout.IsCancellationRequested)
{
_Logger.LogWarning($"Send timeout detected, kicking {EndpointString(connectedSocket)}");
}
}
}
catch (Exception ex)
{
if (connectedSocket.Socket.Connected && !exceptionHandled)
{
_Logger.LogCritical(new EventId(), ex, "TCPServer internal error");
}
}
finally
{
if (!connectedSocket.Socket.Connected)
{
_Logger.LogInformation($"{EndpointString(connectedSocket)} dropped connection");
}
DisconnectClient(connectedSocket);
}
}
