System.Net.Security.SslStreamInternal.ProcessWrite C# (CSharp) Method

        private void ProcessWrite(byte[] buffer, int offset, int count, LazyAsyncResult asyncResult)
        {
            _sslState.CheckThrow(authSuccessCheck:true, shutdownCheck:true);
            ValidateParameters(buffer, offset, count);

            if (Interlocked.Exchange(ref _nestedWrite, 1) == 1)
            {
                throw new NotSupportedException(SR.Format(SR.net_io_invalidnestedcall, "Write", "write"));
            }

            // If this is an async operation, get the AsyncProtocolRequest to use.
            // We do this only after we verify we're the sole write operation in flight.
            AsyncProtocolRequest asyncRequest = GetOrCreateProtocolRequest(ref _writeProtocolRequest, asyncResult);

            bool failed = false;

            try
            {
                StartWriting(buffer, offset, count, asyncRequest);
            }
            catch (Exception e)
            {
                _sslState.FinishWrite();

                failed = true;
                if (e is IOException)
                {
                    throw;
                }

                throw new IOException(SR.net_io_write, e);
            }
            finally
            {
                if (asyncRequest == null || failed)
                {
                    _nestedWrite = 0;
                }
            }
        }