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using HslCommunication.Core;
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using HslCommunication.Core.Net;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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namespace HslCommunication.Enthernet
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{
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/// <summary>
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/// 高性能的异步网络服务器类，适合搭建局域网聊天程序，消息推送程序
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/// </summary>
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/// <remarks>
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/// 详细的使用说明，请参照博客<a href="http://www.cnblogs.com/dathlin/p/8097897.html">http://www.cnblogs.com/dathlin/p/8097897.html</a>
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/// </remarks>
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/// <example>
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/// 此处贴上了Demo项目的服务器配置的示例代码
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/// <code lang="cs" source="TestProject\ComplexNetServer\FormServer.cs" region="NetComplexServer" title="NetComplexServer示例" />
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/// </example>
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public class NetComplexServer : NetworkServerBase
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{
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#region Constructor
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/// <summary>
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/// 实例化一个网络服务器类对象
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/// </summary>
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public NetComplexServer()
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{
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appSessions = new List<AppSession>( );
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lockSessions = new SimpleHybirdLock( );
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}
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#endregion
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#region Private Member
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private int connectMaxClient = 1000; // 允许同时登录的最大客户端数量
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private List<AppSession> appSessions = null; // 所有客户端连接的对象信息
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private SimpleHybirdLock lockSessions = null; // 对象列表操作的锁
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#endregion
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#region Public Properties
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/// <summary>
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/// 所支持的同时在线客户端的最大数量，商用限制1000个，最小10个
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/// </summary>
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public int ConnectMax
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{
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get { return connectMaxClient; }
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set
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{
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if (value >= 10 && value < 1001)
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{
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connectMaxClient = value;
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}
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}
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}
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/// <summary>
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/// 获取或设置服务器是否记录客户端上下线信息
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/// </summary>
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public bool IsSaveLogClientLineChange { get; set; } = true;
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/// <summary>
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/// 所有在线客户端的数量
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/// </summary>
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public int ClientCount => appSessions.Count;
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#endregion
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#region NetworkServerBase Override
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/// <summary>
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/// 初始化操作
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/// </summary>
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protected override void StartInitialization()
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{
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Thread_heart_check = new Thread( new ThreadStart( ThreadHeartCheck ) )
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{
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IsBackground = true,
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Priority = ThreadPriority.AboveNormal
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};
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Thread_heart_check.Start( );
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base.StartInitialization( );
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}
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/// <summary>
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/// 关闭网络时的操作
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/// </summary>
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protected override void CloseAction()
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{
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Thread_heart_check?.Abort( );
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ClientOffline = null;
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ClientOnline = null;
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AcceptString = null;
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AcceptByte = null;
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//关闭所有的网络
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appSessions.ForEach( m => m.WorkSocket?.Close( ) );
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base.CloseAction( );
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}
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/// <summary>
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/// 异常下线
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/// </summary>
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/// <param name="session">会话信息</param>
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/// <param name="ex">异常</param>
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internal override void SocketReceiveException( AppSession session, Exception ex )
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{
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if (ex.Message.Contains( StringResources.Language.SocketRemoteCloseException ))
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{
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//异常掉线
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TcpStateDownLine( session, false );
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}
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}
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/// <summary>
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/// 正常下线
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/// </summary>
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/// <param name="session">会话信息</param>
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internal override void AppSessionRemoteClose( AppSession session )
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{
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TcpStateDownLine( session, true );
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}
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#endregion
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#region Client Online Offline
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private void TcpStateUpLine( AppSession state )
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{
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lockSessions.Enter( );
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appSessions.Add( state );
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lockSessions.Leave( );
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// 提示上线
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ClientOnline?.Invoke( state );
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AllClientsStatusChange?.Invoke( ClientCount );
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// 是否保存上线信息
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if (IsSaveLogClientLineChange)
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{
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LogNet?.WriteInfo( ToString( ), $"[{state.IpEndPoint}] Name:{ state?.LoginAlias } { StringResources.Language.NetClientOnline }" );
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}
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}
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private void TcpStateClose( AppSession state )
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{
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state?.WorkSocket?.Close( );
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}
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private void TcpStateDownLine( AppSession state, bool is_regular, bool logSave = true )
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{
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lockSessions.Enter( );
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bool success = appSessions.Remove( state );
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lockSessions.Leave( );
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if (!success) return;
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// 关闭连接
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TcpStateClose( state );
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// 判断是否正常下线
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string str = is_regular ? StringResources.Language.NetClientOffline : StringResources.Language.NetClientBreak;
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ClientOffline?.Invoke( state, str );
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AllClientsStatusChange?.Invoke( ClientCount );
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// 是否保存上线信息
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if (IsSaveLogClientLineChange && logSave)
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{
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LogNet?.WriteInfo( ToString( ), $"[{state.IpEndPoint}] Name:{ state?.LoginAlias } { str }" );
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}
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}
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#endregion
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#region Event Handle
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/// <summary>
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/// 客户端的上下限状态变更时触发，仅作为在线客户端识别
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/// </summary>
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public event Action<int> AllClientsStatusChange;
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/// <summary>
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/// 当客户端上线的时候，触发此事件
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/// </summary>
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public event Action<AppSession> ClientOnline;
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/// <summary>
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/// 当客户端下线的时候，触发此事件
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/// </summary>
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public event Action<AppSession, string> ClientOffline;
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/// <summary>
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/// 当接收到文本数据的时候,触发此事件
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/// </summary>
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public event Action<AppSession, NetHandle, string> AcceptString;
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/// <summary>
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/// 当接收到字节数据的时候,触发此事件
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/// </summary>
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public event Action<AppSession, NetHandle, byte[]> AcceptByte;
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#endregion
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#region Login Server
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/// <summary>
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/// 当接收到了新的请求的时候执行的操作
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/// </summary>
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/// <param name="socket">异步对象</param>
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/// <param name="endPoint">终结点</param>
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protected override void ThreadPoolLogin( Socket socket, IPEndPoint endPoint )
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{
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// 判断连接数是否超出规定
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if (appSessions.Count > ConnectMax)
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{
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socket?.Close( );
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LogNet?.WriteWarn( ToString( ), StringResources.Language.NetClientFull );
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return;
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}
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// 接收用户别名并验证令牌
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OperateResult result = new OperateResult( );
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OperateResult<int, string> readResult = ReceiveStringContentFromSocket( socket );
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if (!readResult.IsSuccess) return;
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// 登录成功
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AppSession session = new AppSession( )
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{
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WorkSocket = socket,
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LoginAlias = readResult.Content2,
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};
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try
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{
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session.IpEndPoint = (IPEndPoint)socket.RemoteEndPoint;
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session.IpAddress = ((IPEndPoint)socket.RemoteEndPoint).Address.ToString( );
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}
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catch (Exception ex)
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{
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LogNet?.WriteException( ToString( ), StringResources.Language.GetClientIpaddressFailed, ex );
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}
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if (readResult.Content1 == 1)
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{
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// 电脑端客户端
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session.ClientType = "Windows";
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}
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else if (readResult.Content1 == 2)
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{
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// Android 客户端
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session.ClientType = "Android";
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}
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try
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{
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session.WorkSocket.BeginReceive( session.BytesHead, session.AlreadyReceivedHead,
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session.BytesHead.Length - session.AlreadyReceivedHead, SocketFlags.None,
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new AsyncCallback( HeadBytesReceiveCallback ), session );
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TcpStateUpLine( session );
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Thread.Sleep( 100 );// 留下一些时间进行反应
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}
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catch (Exception ex)
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{
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// 登录前已经出错
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TcpStateClose( session );
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LogNet?.WriteException( ToString( ), StringResources.Language.NetClientLoginFailed, ex );
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}
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}
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#endregion
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#region SendAsync Support
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/// <summary>
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/// 服务器端用于数据发送文本的方法
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/// </summary>
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/// <param name="session">数据发送对象</param>
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/// <param name="customer">用户自定义的数据对象，如不需要，赋值为0</param>
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/// <param name="str">发送的文本</param>
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public void Send( AppSession session, NetHandle customer, string str )
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{
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SendBytes( session, HslProtocol.CommandBytes( customer, Token, str ) );
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}
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/// <summary>
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/// 服务器端用于发送字节的方法
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/// </summary>
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/// <param name="session">数据发送对象</param>
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/// <param name="customer">用户自定义的数据对象，如不需要，赋值为0</param>
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/// <param name="bytes">实际发送的数据</param>
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public void Send( AppSession session, NetHandle customer, byte[] bytes )
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{
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SendBytes( session, HslProtocol.CommandBytes( customer, Token, bytes ) );
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}
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private void SendBytes( AppSession session, byte[] content )
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{
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SendBytesAsync( session, content );
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}
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/// <summary>
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/// 服务端用于发送所有数据到所有的客户端
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/// </summary>
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/// <param name="customer">用户自定义的命令头</param>
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/// <param name="str">需要传送的实际的数据</param>
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public void SendAllClients( NetHandle customer, string str )
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{
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for (int i = 0; i < appSessions.Count; i++)
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{
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Send( appSessions[i], customer, str );
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}
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}
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/// <summary>
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/// 服务端用于发送所有数据到所有的客户端
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/// </summary>
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/// <param name="customer">用户自定义的命令头</param>
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/// <param name="data">需要群发客户端的字节数据</param>
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public void SendAllClients( NetHandle customer, byte[] data )
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{
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for (int i = 0; i < appSessions.Count; i++)
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{
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Send( appSessions[i], customer, data );
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}
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}
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/// <summary>
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/// 根据客户端设置的别名进行发送消息
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/// </summary>
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/// <param name="Alias">客户端上线的别名</param>
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/// <param name="customer">用户自定义的命令头</param>
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/// <param name="str">需要传送的实际的数据</param>
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public void SendClientByAlias( string Alias, NetHandle customer, string str )
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{
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for (int i = 0; i < appSessions.Count; i++)
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{
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if (appSessions[i].LoginAlias == Alias)
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{
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Send( appSessions[i], customer, str );
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}
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}
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}
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/// <summary>
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/// 根据客户端设置的别名进行发送消息
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/// </summary>
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/// <param name="Alias">客户端上线的别名</param>
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/// <param name="customer">用户自定义的命令头</param>
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/// <param name="data">需要传送的实际的数据</param>
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public void SendClientByAlias( string Alias, NetHandle customer, byte[] data )
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{
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for (int i = 0; i < appSessions.Count; i++)
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{
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if (appSessions[i].LoginAlias == Alias)
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{
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Send( appSessions[i], customer, data );
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}
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}
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}
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#endregion
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#region DataProcessingCenter
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/// <summary>
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/// 数据处理中心
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/// </summary>
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/// <param name="session">会话对象</param>
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/// <param name="protocol">消息的代码</param>
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/// <param name="customer">用户消息</param>
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/// <param name="content">数据内容</param>
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internal override void DataProcessingCenter( AppSession session, int protocol, int customer, byte[] content )
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{
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if (protocol == HslProtocol.ProtocolCheckSecends)
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{
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BitConverter.GetBytes( DateTime.Now.Ticks ).CopyTo( content, 8 );
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SendBytes( session, HslProtocol.CommandBytes( HslProtocol.ProtocolCheckSecends, customer, Token, content ) );
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session.HeartTime = DateTime.Now;
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}
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else if (protocol == HslProtocol.ProtocolClientQuit)
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{
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TcpStateDownLine( session, true );
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}
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else if (protocol == HslProtocol.ProtocolUserBytes)
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{
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//接收到字节数据
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AcceptByte?.Invoke( session, customer, content );
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}
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else if (protocol == HslProtocol.ProtocolUserString)
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{
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//接收到文本数据
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string str = Encoding.Unicode.GetString( content );
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AcceptString?.Invoke( session, customer, str );
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}
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else
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{
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// 其他一概不处理
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}
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}
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#endregion
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#region Heart Check
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private Thread Thread_heart_check { get; set; } = null;
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private void ThreadHeartCheck()
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{
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while (true)
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{
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Thread.Sleep( 2000 );
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try
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{
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for (int i = appSessions.Count - 1; i >= 0; i--)
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{
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if (appSessions[i] == null)
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{
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appSessions.RemoveAt( i );
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continue;
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}
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if ((DateTime.Now - appSessions[i].HeartTime).TotalSeconds > 1 * 8)//8次没有收到失去联系
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{
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LogNet?.WriteWarn( ToString( ), StringResources.Language.NetHeartCheckTimeout + appSessions[i].IpAddress.ToString( ) );
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TcpStateDownLine( appSessions[i], false, false );
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continue;
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}
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}
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}
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catch (Exception ex)
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{
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LogNet?.WriteException( ToString( ), StringResources.Language.NetHeartCheckFailed, ex );
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}
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if (!IsStarted) break;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
#region Object Override
|
|
|
|
|
|
/// <summary>
|
|
|
/// 获取本对象的字符串表示形式
|
|
|
/// </summary>
|
|
|
/// <returns>字符串</returns>
|
|
|
public override string ToString()
|
|
|
{
|
|
|
return "NetComplexServer";
|
|
|
}
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
}
|
|
|
}
|