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

        public int Receive(IList<ArraySegment<byte>> buffers, SocketFlags socketFlags, out SocketError errorCode)
        {
            if (NetEventSource.IsEnabled) NetEventSource.Enter(this);

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

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

            if (buffers.Count == 0)
            {
                throw new ArgumentException(SR.Format(SR.net_sockets_zerolist, nameof(buffers)), nameof(buffers));
            }


            ValidateBlockingMode();
            if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"SRC:{LocalEndPoint} DST:{RemoteEndPoint}");

            int bytesTransferred;
            errorCode = SocketPal.Receive(_handle, buffers, ref socketFlags, out bytesTransferred);

#if TRACE_VERBOSE
            if (NetEventSource.IsEnabled)
            {
                try
                {
                    if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"SRC:{LocalEndPoint} DST:{RemoteEndPoint} Interop.Winsock.send returns errorCode:{errorCode} bytesTransferred:{bytesTransferred}");
                }
                catch (ObjectDisposedException) { }
            }
#endif

            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 TRACE_VERBOSE
            if (NetEventSource.IsEnabled)
            {
                try
                {
                    if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"SRC:{LocalEndPoint} DST:{RemoteEndPoint} bytesTransferred:{bytesTransferred}");
                }
                catch (ObjectDisposedException) { }
            }
#endif

            if (NetEventSource.IsEnabled) NetEventSource.Exit(this, bytesTransferred);

            return bytesTransferred;
        }

 static void Main(string[] args)
 {
     Socket s=new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
     IPEndPoint ie=new IPEndPoint(IPAddress.Parse("127.0.0.1"),9000);
     s.Connect(ie);
     Console.WriteLine("Connected to Server.....");
     byte[] data=new byte[1024];
     int k=s.Receive(data);
     Console.WriteLine("Loi chao tu Server:{0}",Encoding.ASCII.GetString(data,0,k));
     while(true)
     {
         Console.WriteLine("Moi nhap du lieu can tinh");
         string st=Console.ReadLine();
         byte[] dl=new byte[1024];
         dl=Encoding.ASCII.GetBytes(st);
         s.Send(dl,dl.Length,SocketFlags.None);
         if(st.ToUpper().Equals("QUIT"))
             break;
         dl=new byte[1024];
         int k1=s.Receive(dl);
         Console.WriteLine("Ket qua tinh tong tu server tra ve:{0}", Encoding.ASCII.GetString(dl, 0, k1));
     }
     s.Disconnect(true);
     s.Close();
 }