System.Data.SqlClient.SNI.SNITCPHandle.Receive C# (CSharp) Method

        public override uint Receive(out SNIPacket packet, int timeoutInMilliseconds)
        {
            lock (this)
            {
                packet = null;
                try
                {
                    if (timeoutInMilliseconds > 0)
                    {
                        _socket.ReceiveTimeout = timeoutInMilliseconds;
                    }
                    else if (timeoutInMilliseconds == -1)
                    {   // SqlCient internally represents infinite timeout by -1, and for TcpClient this is translated to a timeout of 0 
                        _socket.ReceiveTimeout = 0;
                    }
                    else
                    {
                        // otherwise it is timeout for 0 or less than -1
                        ReportTcpSNIError(0, SNICommon.ConnTimeoutError, string.Empty);
                        return TdsEnums.SNI_WAIT_TIMEOUT;
                    }

                    packet = new SNIPacket(null);
                    packet.Allocate(_bufferSize);
                    packet.ReadFromStream(_stream);

                    if (packet.Length == 0)
                    {
                        return ReportErrorAndReleasePacket(packet, 0, SNICommon.ConnTerminatedError, string.Empty);
                    }

                    return TdsEnums.SNI_SUCCESS;
                }
                catch (ObjectDisposedException ode)
                {
                    return ReportErrorAndReleasePacket(packet, ode);
                }
                catch (SocketException se)
                {
                    return ReportErrorAndReleasePacket(packet, se);
                }
                catch (IOException ioe)
                {
                    uint errorCode = ReportErrorAndReleasePacket(packet, ioe);
                    if (ioe.InnerException is SocketException && ((SocketException)(ioe.InnerException)).SocketErrorCode == SocketError.TimedOut)
                    {
                        errorCode = TdsEnums.SNI_WAIT_TIMEOUT;
                    }

                    return errorCode;
                }
                finally
                {
                    _socket.ReceiveTimeout = 0;
                }
            }
        }