C# Socket TCP发送图片与接收图片

发送端：

        FileStream fs = new FileStream(@"7.jpg", FileMode.Open);
        private void SendImage()
        {
            //实例化socket    
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 56799);
            socket.Connect(ipep);
            long contentLength = fs.Length;
            //第一次发送数据包的大小
            socket.Send(BitConverter.GetBytes(contentLength));
            while (true)
            {
                //每次发送128字节
                byte[] bits = new byte[128];
                int r = fs.Read(bits, 0, bits.Length);
                if (r <= 0) break;
                socket.Send(bits, r, SocketFlags.None);
            }
            socket.Close();
            fs.Position = 0;
        }

接收端：

        private void RecviveImage()
        {
            new Thread(delegate ()
            {
                Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 56799);
                socket.Bind(ipep);
                socket.Listen(2);

                while (true)
                {
                    try
                    {
                        byte[] data = new byte[8];
                        Socket clientSocket = socket.Accept();
                        if (clientSocket.Connected)
                        {
                            clientSocket.Receive(data, data.Length, SocketFlags.None);
                            long contentLength = BitConverter.ToInt64(data, 0);
                            int size = 0;
                            MemoryStream ms = new MemoryStream();

                            while (size < contentLength)
                            {
                                byte[] bits = new byte[128];
                                int r = clientSocket.Receive(bits, bits.Length, SocketFlags.None);
                                if (r <= 0) break;
                                ms.Write(bits, 0, r);
                                size += r;
                            }

                            Image img = Image.FromStream(ms);
                            this.Invoke((EventHandler) delegate
                            {
                                pictureBox1.Image = img; //更新在窗体控件上
                            });

                            clientSocket.Close();
                            ms.Flush();
                            ms.Close();
                            ms.Dispose();
                        }
                    }
                    catch { }
                }
            })
            { IsBackground = true }.Start();
        }

最后

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