private Exception LogAndWrapReadError(UvException uvError)
{
if (uvError.StatusCode == LibuvConstants.ECANCELED)
{
// The operation was canceled by the server not the client. No need for additional logs.
return(new ConnectionAbortedException(uvError.Message, uvError));
}
else if (LibuvConstants.IsConnectionReset(uvError.StatusCode))
{
// Log connection resets at a lower (Debug) level.
LibuvTrace.ConnectionReset(Log, ConnectionId);
return(new ConnectionResetException(uvError.Message, uvError));
}
else
{
// This is unexpected.
LibuvTrace.ConnectionError(Log, ConnectionId, uvError);
return(new IOException(uvError.Message, uvError));
}
}
/// <summary>
/// Handles an incoming connection
/// </summary>
/// <param name="listenSocket">Socket being used to listen on</param>
/// <param name="status">Connection status</param>
private void OnConnection(UvStreamHandle listenSocket, int status)
{
UvStreamHandle acceptSocket = null;
try
{
acceptSocket = CreateAcceptSocket();
listenSocket.Accept(acceptSocket);
DispatchConnection(acceptSocket);
}
catch (UvException ex) when(LibuvConstants.IsConnectionReset(ex.StatusCode))
{
LibuvTrace.ConnectionReset(Log, "(null)");
acceptSocket?.Dispose();
}
catch (UvException ex)
{
Log.LogError(0, ex, "Listener.OnConnection");
acceptSocket?.Dispose();
}
}
private void ReadStartCallback(UvStreamHandle handle, int status)
{
if (status < 0)
{
if (status != LibuvConstants.EOF)
{
Thread.Loop.Libuv.Check(status, out var ex);
Log.LogError(0, ex, "DispatchPipe.ReadStart");
}
DispatchPipe.Dispose();
return;
}
if (_closed || DispatchPipe.PendingCount() == 0)
{
return;
}
var acceptSocket = CreateAcceptSocket();
try
{
DispatchPipe.Accept(acceptSocket);
HandleConnection(acceptSocket);
}
catch (UvException ex) when(LibuvConstants.IsConnectionReset(ex.StatusCode))
{
LibuvTrace.ConnectionReset(Log, "(null)");
acceptSocket.Dispose();
}
catch (UvException ex)
{
Log.LogError(0, ex, "DispatchPipe.Accept");
acceptSocket.Dispose();
}
}
private void LogWriteInfo(int status, Exception error)
{
if (error == null)
{
LibuvTrace.ConnectionWriteCallback(_log, _connectionId, status);
}
else
{
// Log connection resets at a lower (Debug) level.
if (status == LibuvConstants.ECANCELED)
{
// Connection was aborted.
}
else if (LibuvConstants.IsConnectionReset(status))
{
LibuvTrace.ConnectionReset(_log, _connectionId);
}
else
{
LibuvTrace.ConnectionError(_log, _connectionId, error);
}
}
}
protected internal void HandleConnection(UvStreamHandle socket)
{
try
{
IPEndPoint remoteEndPoint = null;
IPEndPoint localEndPoint = null;
if (socket is UvTcpHandle tcpHandle)
{
try
{
remoteEndPoint = tcpHandle.GetPeerIPEndPoint();
localEndPoint = tcpHandle.GetSockIPEndPoint();
}
catch (UvException ex) when(LibuvConstants.IsConnectionReset(ex.StatusCode))
{
LibuvTrace.ConnectionReset(TransportContext.Log, "(null)");
socket.Dispose();
return;
}
}
var options = TransportContext.Options;
#pragma warning disable CS0618
var connection = new LibuvConnection(socket, TransportContext.Log, Thread, remoteEndPoint, localEndPoint, InputOptions, OutputOptions, options.MaxReadBufferSize, options.MaxWriteBufferSize);
#pragma warning restore CS0618
connection.Start();
bool accepted = _acceptQueue.Writer.TryWrite(connection);
Debug.Assert(accepted, "The connection was not written to the channel!");
}
catch (Exception ex)
{
TransportContext.Log.LogCritical(ex, $"Unexpected exception in {nameof(ListenerContext)}.{nameof(HandleConnection)}.");
}
}