System.Net.ConnectStream.ResubmitWrite C# (CSharp) Method

        internal void ResubmitWrite(ConnectStream oldStream, bool suppressWrite) {
            GlobalLog.Enter("ConnectStream#" + ValidationHelper.HashString(this) + "::ResubmitWrite", ValidationHelper.HashString(oldStream));
            GlobalLog.ThreadContract(ThreadKinds.Sync, "ConnectStream#" + ValidationHelper.HashString(this) + "::ResubmitWrite");

            //

            //
            try {
                Interlocked.CompareExchange(ref m_CallNesting, Nesting.InternalIO, Nesting.Idle);
                GlobalLog.Print("ConnectStream#" + ValidationHelper.HashString(this) + "::ResubmitWrite() Inc: " + m_CallNesting.ToString());

                GlobalLog.Print("ConnectStream#" + ValidationHelper.HashString(this) + "::ResubmitWrite(), callNesting : " + m_CallNesting.ToString() + " IsClosed = " + IsClosed);
                //
                // no need to buffer here:
                // we're already resubmitting buffered data give it to the connection to put it on the wire again
                // we set BytesLeftToWrite to 0 'cause even on failure there can be no recovery,
                // so just leave it to IOError() to clean up and don't call ResubmitWrite()
                //
                ScatterGatherBuffers bufferedData = oldStream.BufferedData;
                SafeSetSocketTimeout(SocketShutdown.Send);
                if (!WriteChunked) {
                    if (!suppressWrite)
                        m_Connection.Write(bufferedData);
                }
                else {
                    // we have the data buffered, but we still want to chunk.

                    // first set this to disable Close() from sending a chunk terminator.
                    GlobalLog.Assert(m_HttpWriteMode != HttpWriteMode.None, "ConnectStream#{0}::ResubmitWrite()|m_HttpWriteMode == HttpWriteMode.None", ValidationHelper.HashString(this));
                    m_HttpWriteMode = HttpWriteMode.ContentLength;

                    if (bufferedData.Length==0) {
                        m_Connection.Write(NclConstants.ChunkTerminator, 0, NclConstants.ChunkTerminator.Length);
                    }
                    else {
                        int chunkHeaderOffset = 0;
                        byte[] chunkHeaderBuffer = GetChunkHeader(bufferedData.Length, out chunkHeaderOffset);
                        BufferOffsetSize[] dataBuffers = bufferedData.GetBuffers();
                        BufferOffsetSize[] buffers = new BufferOffsetSize[dataBuffers.Length + 3];
                        buffers[0] = new BufferOffsetSize(chunkHeaderBuffer, chunkHeaderOffset, chunkHeaderBuffer.Length - chunkHeaderOffset, false);
                        int index = 0;
                        foreach (BufferOffsetSize buffer in dataBuffers) {
                            buffers[++index] = buffer;
                        }
                        buffers[++index] = new BufferOffsetSize(NclConstants.CRLF, 0, NclConstants.CRLF.Length, false);
                        buffers[++index] = new BufferOffsetSize(NclConstants.ChunkTerminator, 0, NclConstants.ChunkTerminator.Length, false);

                        SplitWritesState splitState = new SplitWritesState(buffers);

                        BufferOffsetSize[] sendBuffers = splitState.GetNextBuffers();
                        while(sendBuffers != null){
                            m_Connection.MultipleWrite(sendBuffers);
                            sendBuffers = splitState.GetNextBuffers();
                        }
                    }
                }
                if(Logging.On && bufferedData.GetBuffers() != null) {
                    foreach (BufferOffsetSize bufferOffsetSize in bufferedData.GetBuffers()) {
                        if (bufferOffsetSize == null) {
                            Logging.Dump(Logging.Web, this, "ResubmitWrite", null, 0, 0);
                        }
                        else {
                            Logging.Dump(Logging.Web, this, "ResubmitWrite", bufferOffsetSize.Buffer, bufferOffsetSize.Offset, bufferOffsetSize.Size);
                        }
                    }
                }
                GlobalLog.Print("ConnectStream#" + ValidationHelper.HashString(this) + "::ResubmitWrite() sent:" + bufferedData.Length.ToString() );
            }
            catch (Exception exception)
            {
                if (NclUtilities.IsFatal(exception)) throw;

                // A Fatal error
                WebException we = new WebException(NetRes.GetWebStatusString("net_connclosed", WebExceptionStatus.SendFailure),
                                               WebExceptionStatus.SendFailure,
                                               WebExceptionInternalStatus.RequestFatal,
                                               exception);
                IOError(we, false);
            }
            finally {
                Interlocked.CompareExchange(ref m_CallNesting, Nesting.Idle, Nesting.InternalIO);
                GlobalLog.Print("ConnectStream#" + ValidationHelper.HashString(this) + "::ResubmitWrite(), callNesting : " + m_CallNesting.ToString() + " IsClosed = " + IsClosed);
            }
            m_BytesLeftToWrite = 0;
            CallDone();
            GlobalLog.Leave("ConnectStream#" + ValidationHelper.HashString(this) + "::ResubmitWrite", BytesLeftToWrite.ToString());
        }