private Connection(TransportSocket clientSocket, IPAddress endpointInterface, int bufferSize)
{
Id = Guid.NewGuid().ToString().Substring(0, 8);
ClientSocket = clientSocket;
EndpointInterface = endpointInterface;
BufferSize = bufferSize;
}
public static Connection From(TransportSocket clientSocket, IPAddress endpointInterface, int bufferSize)
{
if (clientSocket == null)
{
throw new ArgumentException($"Parameter `{nameof(clientSocket)}` cannot be `null`.");
}
return(new Connection(clientSocket, endpointInterface, bufferSize));
}
public static async Task RunSequentialAsync(TransportSocket clientSocket, TransportSocket endpointSocket, int bufferSize, CancellationToken cancellationToken = default)
{
var pumpUp = Task.Run(async() =>
{
var bufferUp = MemoryPool <byte> .Shared.Rent(bufferSize).Memory;
while (true)
{
var readFromClient = await clientSocket.ReceiveAsync(bufferUp, cancellationToken);
if (readFromClient == 0)
{
try
{
if (endpointSocket.Connected)
{
endpointSocket.Disconnect(false);
}
} catch (SocketException) {}
return;
}
var data = bufferUp.Slice(0, readFromClient);
var pushedToEndpoint = await endpointSocket.SendAsync(data, cancellationToken);
if (cancellationToken.IsCancellationRequested)
{
return;
}
}
});
var pumpDown = Task.Run(async() =>
{
var bufferDown = MemoryPool <byte> .Shared.Rent(bufferSize).Memory;
while (true)
{
var readFromEndpoint = await endpointSocket.ReceiveAsync(bufferDown, cancellationToken);
if (readFromEndpoint == 0)
{
try
{
if (clientSocket.Connected)
{
clientSocket.Disconnect(false);
}
} catch (SocketException) {}
return;
}
var data = bufferDown.Slice(0, readFromEndpoint);
var pushedToClient = await clientSocket.SendAsync(data, cancellationToken);
if (cancellationToken.IsCancellationRequested)
{
return;
}
}
});
await Task.WhenAll(pumpUp, pumpDown);
}