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@ -1,401 +1,171 @@ |
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using System; |
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using System.Collections; |
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using System.Text; |
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using Apewer.Internals; |
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using System; |
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using System.Collections.Generic; |
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using System.Net; |
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using System.Net.Sockets; |
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using System.Threading; |
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using System.IO; |
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using Apewer.Internals; |
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using Apewer; |
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namespace Apewer.Network |
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{ |
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/// <summary>TCP 服务端。</summary>
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internal class TcpServer |
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public sealed class TcpServer : IDisposable |
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{ |
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#region event
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Socket _server = null; |
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List<Socket> _clients = new List<Socket>(1024); |
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/// <summary>Exception。</summary>
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public Event<Exception> Excepted { get; set; } |
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/// <summary>获取当前监听的端口。</summary>
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public int Port { get => GetLocalPort(); } |
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/// <summary>服务端已启动。</summary>
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public Event<SocketEndPoint> Started { get; set; } |
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/// <summary>启动服务端,并在所有接口上监听端口。</summary>
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public TcpServer(int port) : this(IPAddress.Any, port) { } |
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/// <summary>服务端已关闭。</summary>
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public Event<SocketEndPoint> Quitted { get; set; } |
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/// <summary>启动服务端,并监听端口。</summary>
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public TcpServer(string ip, int port) : this(IPAddress.Parse(ip), port) { } |
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/// <summary>客户端已连接。</summary>
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public Event<SocketEndPoint> Connected { get; set; } |
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/// <summary>启动服务端,并监听端口。</summary>
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public TcpServer(IPAddress address, int port) : this(new IPEndPoint(address, port)) { } |
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/// <summary>客户端已断开。</summary>
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public Event<SocketEndPoint> Closed { get; set; } |
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/// <summary>已收到客户端数据。</summary>
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public Event<SocketReceived> Received { get; set; } |
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#region raise
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internal void RaiseExcepted(Exception exception) |
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{ |
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if (Excepted != null) Excepted(this, exception); |
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} |
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internal void RaiseStarted() |
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{ |
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if (Started != null) |
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{ |
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var ip = _endpoint == null ? "" : _endpoint.Address.ToString(); |
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var port = _endpoint == null ? 0 : _endpoint.Port; |
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Started?.Invoke(this, new SocketEndPoint(ip, port)); |
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} |
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} |
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internal void RaiseConnected(string ip, int port) |
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{ |
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Connected?.Invoke(this, new SocketEndPoint(ip, port)); |
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} |
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internal void RaiseClosed(string ip, int port) |
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/// <summary>启动服务端,并监听端口。</summary>
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public TcpServer(IPEndPoint endpoint) |
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{ |
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Closed?.Invoke(this, new SocketEndPoint(ip, port)); |
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_server = new Socket(endpoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp); |
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_server.Bind(endpoint); |
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_server.Listen(500); |
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_server.SendTimeout = 5000; |
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} |
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internal void RaiseQuitted() |
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/// <summary>关闭连接,释放系统资源。</summary>
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public void Dispose() |
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{ |
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var quitted = Quitted; |
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if (quitted != null) |
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{ |
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var ip = _endpoint == null ? "" : _endpoint.Address.ToString(); |
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var port = _endpoint == null ? 0 : _endpoint.Port; |
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quitted(this, new SocketEndPoint(ip, port)); |
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} |
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} |
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internal void RaiseReceived(string ip, int port, byte[] bytes) |
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{ |
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Received?.Invoke(this, new SocketReceived(ip, port, bytes)); |
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} |
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#endregion
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#endregion
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#region definition
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private Socket _socket = null; |
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private Thread _listener = null; |
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private SortedList _client = null; |
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private IPEndPoint _endpoint = null; |
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private int _port = 0; |
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private int _max = 0; |
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private int _timeout = 0; |
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private bool _state = false; |
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private bool _background = true; |
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/// <summary>构造函数。</summary>
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public TcpServer(int port = 0) |
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{ |
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Port = port; |
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Max = 1000; |
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Timeout = 1000; |
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} |
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#endregion
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#region accessor
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/// <summary>获取或设置监听线程是否为后台线程,默认为“是”。</summary>
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public bool Background |
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lock (_clients) |
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{ |
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get { return _background; } |
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set |
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foreach (var client in _clients) |
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{ |
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_background = value; |
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try { if (_listener != null) _listener.IsBackground = value; } |
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catch (Exception ex) { RaiseExcepted(ex); } |
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} |
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try { client.Disconnect(false); } catch { } |
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try { client.Close(100); } catch { } |
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#if !NET20
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try { client.Dispose(); } catch { } |
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#endif
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} |
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/// <summary>端口。</summary>
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public int Port |
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{ |
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get |
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{ |
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int port = _port; |
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if (port > 65535) port = 65535; |
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if (port < 0) port = 0; |
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return port; |
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_clients.Clear(); |
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} |
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set |
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if (_server != null) |
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{ |
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int port = value; |
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if (port < 0) port = 0; |
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if (port > 65535) port = 65535; |
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_port = port; |
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try { _server.Disconnect(false); } catch { } |
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try { _server.Close(100); } catch { } |
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#if !NET20
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try { _server.Dispose(); } catch { } |
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#endif
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} |
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} |
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/// <summary>最大客户端数量。</summary>
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public int Max |
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/// <summary>获取当前所有客户端连接。</summary>
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public Socket[] GetClients() |
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{ |
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get { return _max; } |
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set { _max = (value > 0) ? value : 0; } |
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} |
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/// <summary>发送数据和接收数据的超时时间。</summary>
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public int Timeout |
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lock (_clients) |
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{ |
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get { return _timeout; } |
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set { _timeout = (value > 0) ? value : 0; } |
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var array = _clients.ToArray(); |
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return array; |
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} |
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/// <summary>服务端正在运行。</summary>
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public bool Alive |
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{ |
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get { return (_listener != null) ? _listener.IsAlive : false; } |
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} |
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/// <summary>已连接的客户端数量。</summary>
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public int Count |
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/// <summary>等待接收客户端连接。此方法将会阻塞当前线程直到关闭监听的端口。</summary>
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/// <param name="callback">处理客户端连接,当此回调结束时将释放此连接。</param>
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/// <exception cref="ArgumentNullException"></exception>
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public void Accept(Action<Socket> callback) |
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{ |
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get { return (_client != null) ? _client.Count : 0; } |
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} |
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if (callback == null) throw new ArgumentNullException(nameof(callback)); |
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/// <summary>启动服务端。</summary>
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public bool Start(bool inBackground = true) |
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while (true) |
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{ |
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var socket = null as Socket; |
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try |
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{ |
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_endpoint = new IPEndPoint(IPAddress.Any, Port); |
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_client = new SortedList(); |
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_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); |
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_socket.Bind(_endpoint); |
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_socket.Listen(Max); |
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_socket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.AcceptConnection, 1); |
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_socket.ReceiveTimeout = Timeout; |
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_socket.SendTimeout = Timeout; |
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if (inBackground) |
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{ |
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_listener = new Thread(Listener); |
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_listener.IsBackground = Background; |
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_listener.Start(); |
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_state = _listener.IsAlive; |
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var cep = (IPEndPoint)_socket.LocalEndPoint; |
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_port = cep.Port; |
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RaiseStarted(); |
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return true; |
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} |
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else |
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{ |
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_state = true; |
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var cep = (IPEndPoint)_socket.LocalEndPoint; |
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_port = cep.Port; |
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RaiseStarted(); |
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Listener(); |
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return true; |
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} |
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} |
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catch (Exception ex) |
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socket = _server.Accept(); |
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if (socket != null) |
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{ |
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_endpoint = null; |
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RaiseExcepted(ex); |
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if ((_socket != null) && _socket.Connected) _socket.Close(); |
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_state = false; |
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Quit(); |
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return false; |
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} |
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Callback.Enqueue(this, socket, callback); |
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} |
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/// <summary>关闭服务端。</summary>
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public void Quit() |
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{ |
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Quit(true); |
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} |
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/// <summary>断开与所有客户端的连接。</summary>
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public void Close() |
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{ |
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if (_client != null) |
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{ |
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foreach (Socket socket in _client.Values) |
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catch |
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{ |
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try |
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{ |
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var ep = (IPEndPoint)socket.RemoteEndPoint; |
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Close(ep.Address.ToString(), ep.Port); |
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} |
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catch (Exception ex) |
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if (socket != null) |
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{ |
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RaiseExcepted(ex); |
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try { socket.Close(); } catch { } |
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try { socket.Disconnect(false); } catch { } |
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#if !NET20
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try { socket.Dispose(); } catch { } |
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#endif
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} |
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} |
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} |
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} |
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/// <summary>断开与指定客户端的连接。</summary>
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public void Close(string ip, int port) |
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{ |
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if (port < 0) port = 0; |
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if (port > 65535) port = 65535; |
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if (!string.IsNullOrEmpty(ip)) |
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int GetLocalPort() |
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{ |
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var ck = ip + "-" + port.ToString(); |
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var cs = Client(ip, port); |
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try |
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{ |
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if (cs != null) cs.Close(); |
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Remove(ck); |
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RaiseClosed(ip, port); |
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} |
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catch (Exception ex) |
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var socket = _server; |
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if (socket != null) |
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{ |
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RaiseExcepted(ex); |
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} |
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var endpoint = socket.LocalEndPoint as IPEndPoint; |
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if (endpoint != null) return endpoint.Port; |
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} |
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return 0; |
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} |
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/// <summary>向所有客户端广播数据。</summary>
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public void Send(byte[] bytes) |
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{ |
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var length = bytes.Length; |
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if ((_client.Count > 0) && (length > 0)) |
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sealed class Callback |
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{ |
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foreach (Socket i in _client.Values) Send(bytes, i); |
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} |
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} |
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/// <summary>向指定客户端发送数据。</summary>
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public bool Send(byte[] bytes, string ip, int port) |
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TcpServer _server; |
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Socket _socket; |
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Action<Socket> _action; |
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public static void Enqueue(TcpServer server, Socket socket, Action<Socket> callback) |
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{ |
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if (port < 0) port = 0; |
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if (port > 65535) port = 65535; |
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var state = new Callback(); |
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state._server = server ?? throw new ArgumentNullException(nameof(server)); |
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state._socket = socket ?? throw new ArgumentNullException(nameof(socket)); |
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state._action = callback ?? throw new ArgumentNullException(nameof(callback)); |
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if (string.IsNullOrEmpty(ip)) return false; |
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return Send(bytes, Client(ip, port)); |
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ThreadPool.QueueUserWorkItem(InThreadPool, state); |
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} |
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#endregion
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#region logic
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/// <summary>
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///
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/// </summary>
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/// <param name="event"></param>
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private void Quit(bool @event) |
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static void InThreadPool(object state) |
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{ |
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Close(); |
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if (_listener != null) |
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{ |
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if (_listener.IsAlive) _listener.Abort(); |
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_listener = null; |
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} |
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if (_socket != null) |
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{ |
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_socket.Close(); |
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_socket = null; |
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} |
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if (_client != null) |
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{ |
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_client.Clear(); |
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_client = null; |
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} |
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_endpoint = null; |
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if (@event) RaiseQuitted(); |
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} |
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var instance = state as Callback; |
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if (instance == null) return; |
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if (instance._server == null) return; |
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if (instance._socket == null) return; |
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if (instance._action == null) return; |
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private void Close(Socket socket) |
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var socket = instance._socket; |
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lock (instance._server._clients) |
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{ |
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if (socket != null) |
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{ |
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try { socket.Close(); } |
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catch (Exception ex) { RaiseExcepted(ex); } |
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instance._server._clients.Add(instance._socket); |
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} |
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} |
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internal void Remove(string key) |
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{ |
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if ((_client != null) && (!string.IsNullOrEmpty(key))) |
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{ |
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if (_client.ContainsKey(key)) |
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{ |
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try |
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{ |
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Close((Socket)_client[key]); |
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_client.Remove(key); |
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instance._action.Invoke(instance._socket); |
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} |
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catch (Exception ex) |
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catch |
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{ } |
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finally |
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{ |
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RaiseExcepted(ex); |
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} |
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} |
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} |
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} |
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private bool Send(byte[] bytes, Socket client) |
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{ |
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|
var length = bytes.Length; |
|
|
|
if ((client != null) && (length > 0)) |
|
|
|
{ |
|
|
|
try |
|
|
|
lock (instance._server._clients) |
|
|
|
{ |
|
|
|
return (client.Send(bytes, length, SocketFlags.None) > 0) ? true : false; |
|
|
|
instance._server._clients.Remove(instance._socket); |
|
|
|
} |
|
|
|
catch (Exception ex) { RaiseExcepted(ex); } |
|
|
|
try { socket.Disconnect(false); } catch { } |
|
|
|
try { socket.Close(100); } catch { } |
|
|
|
#if !NET20
|
|
|
|
try { socket.Dispose(); } catch { } |
|
|
|
#endif
|
|
|
|
} |
|
|
|
return false; |
|
|
|
} |
|
|
|
|
|
|
|
private void Listener() |
|
|
|
{ |
|
|
|
while (_socket != null) |
|
|
|
{ |
|
|
|
try |
|
|
|
{ |
|
|
|
var socket = _socket.Accept(); |
|
|
|
if (socket != null) |
|
|
|
{ |
|
|
|
var ep = (IPEndPoint)socket.RemoteEndPoint; |
|
|
|
var key = ep.Address.ToString() + "-" + ep.Port.ToString(); |
|
|
|
_client.Add(key, socket); |
|
|
|
var instance = new TcpInstance(this, _socket, socket); |
|
|
|
var thread = new Thread(instance.Process); |
|
|
|
thread.IsBackground = true; |
|
|
|
thread.Name = key; |
|
|
|
thread.Start(); |
|
|
|
RaiseConnected(ep.Address.ToString(), ep.Port); |
|
|
|
} |
|
|
|
} |
|
|
|
catch (Exception ex) |
|
|
|
{ |
|
|
|
RaiseExcepted(ex); |
|
|
|
} |
|
|
|
} |
|
|
|
Quit(false); |
|
|
|
} |
|
|
|
|
|
|
|
private Socket Client(string ip, int port) |
|
|
|
{ |
|
|
|
if (port < 0) port = 0; |
|
|
|
if (port > 65535) port = 65535; |
|
|
|
try |
|
|
|
{ |
|
|
|
var ck = ip + "-" + port.ToString(); |
|
|
|
if (_client.ContainsKey(ck)) return (Socket)_client[ck]; |
|
|
|
} |
|
|
|
catch (Exception ex) |
|
|
|
{ |
|
|
|
RaiseExcepted(ex); |
|
|
|
} |
|
|
|
return null; |
|
|
|
} |
|
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
|
|
} |
|
|
|
} |
|
|
|