public int Receive(byte[] buffer, int offset, int size, SocketFlags socketFlags, out SocketError errorCode)
{
if (NetEventSource.IsEnabled) NetEventSource.Enter(this);
if (CleanedUp)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
// Validate input parameters.
if (buffer == null)
{
throw new ArgumentNullException(nameof(buffer));
}
if (offset < 0 || offset > buffer.Length)
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
if (size < 0 || size > buffer.Length - offset)
{
throw new ArgumentOutOfRangeException(nameof(size));
}
ValidateBlockingMode();
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"SRC:{LocalEndPoint} DST:{RemoteEndPoint} size:{size}");
int bytesTransferred;
errorCode = SocketPal.Receive(_handle, buffer, offset, size, socketFlags, out bytesTransferred);
if (errorCode != SocketError.Success)
{
// Update the internal state of this socket according to the error before throwing.
UpdateStatusAfterSocketError(errorCode);
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, new SocketException((int)errorCode));
NetEventSource.Exit(this, 0);
}
return 0;
}
if (s_perfCountersEnabled)
{
bool peek = ((int)socketFlags & (int)SocketFlags.Peek) != 0;
if (bytesTransferred > 0 && !peek)
{
SocketPerfCounter.Instance.Increment(SocketPerfCounterName.SocketBytesReceived, bytesTransferred);
if (Transport == TransportType.Udp)
{
SocketPerfCounter.Instance.Increment(SocketPerfCounterName.SocketDatagramsReceived);
}
}
}
if (NetEventSource.IsEnabled)
{
#if TRACE_VERBOSE
try
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"SRC:{LocalEndPoint} DST:{RemoteEndPoint} bytesTransferred:{bytesTransferred}");
}
catch (ObjectDisposedException) { }
#endif
NetEventSource.DumpBuffer(this, buffer, offset, bytesTransferred);
NetEventSource.Exit(this, bytesTransferred);
}
return bytesTransferred;
}