Cara Menulis Pelayan Berasaskan TCP/IP Boleh Skala
Pengenalan
Merancang pelayan TCP/IP berskala melibatkan pengoptimuman seni binanya untuk mengendalikan jumlah sambungan serentak yang tinggi sambil mengekalkan prestasi dan kebolehpercayaan. Ini memerlukan pertimbangan teliti seni bina rangkaian, pengurusan benang dan aliran data.
Seni Bina Rangkaian Boleh Skala
Pengoptimuman Aliran Data
Contoh Pelaksanaan
using System; using System.Net; using System.Net.Sockets; using System.Threading; using System.Threading.Tasks; public class ScalableTcpServer { private Socket _serverSocket; private List<Socket> _sockets; public void Start(IPAddress ipAddress, int port) { _serverSocket = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp); _sockets = new List<Socket>(); _serverSocket.Bind(new IPEndPoint(ipAddress, port)); _serverSocket.Listen(100); // Accept incoming connections asynchronously _serverSocket.BeginAccept(AcceptCallback, null); } private void AcceptCallback(IAsyncResult result) { try { Socket socket = _serverSocket.EndAccept(result); _sockets.Add(socket); // Handle data from the client asynchronously socket.BeginReceive(new byte[_bufferSize], 0, _bufferSize, SocketFlags.None, DataReceivedCallback, socket); // Accept the next incoming connection _serverSocket.BeginAccept(AcceptCallback, null); } catch (Exception ex) { // Handle exception } } private void DataReceivedCallback(IAsyncResult result) { Socket socket = (Socket)result.AsyncState; try { int bytesRead = socket.EndReceive(result); if (bytesRead > 0) { // Process received data } else { // Handle client disconnection RemoveSocket(socket); } // Register for the next data reception socket.BeginReceive(new byte[_bufferSize], 0, _bufferSize, SocketFlags.None, DataReceivedCallback, socket); } catch (Exception ex) { // Handle exception } } private void RemoveSocket(Socket socket) { lock (_sockets) { _sockets.Remove(socket); } } }
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