System.Net.Sockets.Socket.SendAsync C# (CSharp) Method

        public bool SendAsync(SocketAsyncEventArgs e)
        {
            if (NetEventSource.IsEnabled) NetEventSource.Enter(this, e);
            bool retval;

            if (CleanedUp)
            {
                throw new ObjectDisposedException(GetType().FullName);
            }

            if (e == null)
            {
                throw new ArgumentNullException(nameof(e));
            }

            // Prepare for the native call.
            e.StartOperationCommon(this);
            e.StartOperationSend();

            // Local vars for sync completion of native call.
            int bytesTransferred;
            SocketError socketError;

            // Wrap native methods with try/catch so event args object can be cleaned up.
            try
            {
                socketError = e.DoOperationSend(_handle, out bytesTransferred);
            }
            catch
            {
                // Clear in-use flag on event args object. 
                e.Complete();
                throw;
            }

            // Handle completion when completion port is not posted.
            if (socketError != SocketError.Success && socketError != SocketError.IOPending)
            {
                e.FinishOperationSyncFailure(socketError, bytesTransferred, SocketFlags.None);
                retval = false;
            }
            else
            {
                retval = true;
            }

            if (NetEventSource.IsEnabled) NetEventSource.Exit(this, retval);
            return retval;
        }

        /// <summary>
        /// 批量发送
        /// </summary>
        public void Send(IList <ArraySegment <byte> > content)
        {
            if (_tcpSock != null && _tcpSock.Connected)
            {
                SocketAsyncEventArgs args = SocketHelpers.AcquireSocketArg();
                if (args != null)
                {
                    args.Completed += SendAsyncComplete;
                    args.BufferList = content;
                    args.UserToken  = this;
                    _tcpSock.SendAsync(args);

                    //unchecked
                    //{
                    //    _bytesSent += (uint)length;
                    //}

                    //Interlocked.Add(ref _totalBytesSent, length);
                }
                else
                {
                    Csl.Wl(string.Format("Client {0}'s SocketArgs are null", this));
                }
            }
        }