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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.Sockets;
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using System.Text;
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using HslCommunication.Core;
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using System.Net;
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/**********************************************************************************
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*
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* 发布订阅类的服务器类
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*
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* 实现从客户端进行数据的订阅操作
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*
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*********************************************************************************/
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namespace HslCommunication.Enthernet
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{
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/// <summary>
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/// 发布订阅服务器的类，支持按照关键字进行数据信息的订阅
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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/8992315.html">http://www.cnblogs.com/dathlin/p/8992315.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\PushNetServer\FormServer.cs" region="NetPushServer" title="NetPushServer示例" />
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/// </example>
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public class NetPushServer : NetworkServerBase
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{
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#region Constructor
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/// <summary>
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/// 实例化一个对象
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/// </summary>
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public NetPushServer()
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{
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dictPushClients = new Dictionary<string, PushGroupClient>( );
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dictSendHistory = new Dictionary<string, string>( );
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dicHybirdLock = new SimpleHybirdLock( );
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dicSendCacheLock = new SimpleHybirdLock( );
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sendAction = new Action<AppSession, string>( SendString );
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hybirdLock = new SimpleHybirdLock( );
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pushClients = new List<NetPushClient>( );
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}
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#endregion
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#region Server Override
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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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// 接收一条信息，指定当前请求的数据订阅信息的关键字
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OperateResult<int, string> receive = ReceiveStringContentFromSocket( socket );
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if (!receive.IsSuccess) return;
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// 判断当前的关键字在服务器是否有消息发布
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//if(!IsPushGroupOnline(receive.Content2))
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//{
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// SendStringAndCheckReceive( socket, 1, StringResources.Language.KeyIsNotExist );
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// LogNet?.WriteWarn( ToString( ), StringResources.Language.KeyIsNotExist );
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// socket?.Close( );
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// return;
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//}
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// 确认订阅的信息
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OperateResult check = SendStringAndCheckReceive( socket, 0, "" );
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if (!check.IsSuccess)
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{
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socket?.Close( );
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return;
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}
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// 允许发布订阅信息
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AppSession session = new AppSession
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{
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KeyGroup = receive.Content2,
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WorkSocket = socket
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};
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try
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{
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session.IpEndPoint = (System.Net.IPEndPoint)socket.RemoteEndPoint;
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session.IpAddress = session.IpEndPoint.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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try
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{
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socket.BeginReceive( session.BytesHead, 0, session.BytesHead.Length, SocketFlags.None, new AsyncCallback( ReceiveCallback ), session );
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}
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catch (Exception ex)
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{
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LogNet?.WriteException( ToString( ), StringResources.Language.SocketReceiveException, ex );
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return;
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}
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LogNet?.WriteDebug( ToString( ), string.Format( StringResources.Language.ClientOnlineInfo, session.IpEndPoint ) );
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PushGroupClient push = GetPushGroupClient( receive.Content2 );
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if (push != null)
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{
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System.Threading.Interlocked.Increment( ref onlineCount );
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push.AddPushClient( session );
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dicSendCacheLock.Enter( );
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if (dictSendHistory.ContainsKey( receive.Content2 ))
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{
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if (isPushCacheAfterConnect) SendString( session, dictSendHistory[receive.Content2] );
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}
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dicSendCacheLock.Leave( );
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}
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}
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/// <summary>
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/// 关闭服务器的引擎
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/// </summary>
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public override void ServerClose( )
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{
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base.ServerClose( );
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}
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#endregion
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#region Public Method
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/// <summary>
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/// 主动推送数据内容
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/// </summary>
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/// <param name="key">关键字</param>
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/// <param name="content">数据内容</param>
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public void PushString( string key, string content )
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{
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dicSendCacheLock.Enter( );
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if (dictSendHistory.ContainsKey( key ))
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{
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dictSendHistory[key] = content;
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}
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else
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{
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dictSendHistory.Add( key, content );
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}
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dicSendCacheLock.Leave( );
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AddPushKey( key );
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GetPushGroupClient( key )?.PushString( content, sendAction );
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}
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/// <summary>
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/// 移除关键字信息，通常应用于一些特殊临时用途的关键字
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/// </summary>
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/// <param name="key">关键字</param>
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public void RemoveKey( string key )
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{
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dicHybirdLock.Enter( );
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if (dictPushClients.ContainsKey( key ))
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{
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int count = dictPushClients[key].RemoveAllClient( );
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for (int i = 0; i < count; i++)
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{
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System.Threading.Interlocked.Decrement( ref onlineCount );
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}
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}
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dicHybirdLock.Leave( );
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}
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/// <summary>
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/// 创建一个远程服务器的数据推送操作，以便推送给子客户端
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/// </summary>
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/// <param name="ipAddress">远程的IP地址</param>
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/// <param name="port">远程的端口号</param>
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/// <param name="key">订阅的关键字</param>
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public OperateResult CreatePushRemote( string ipAddress, int port, string key )
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{
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OperateResult result;
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hybirdLock.Enter( );
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if (pushClients.Find( m => m.KeyWord == key ) == null)
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{
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NetPushClient pushClient = new NetPushClient( ipAddress, port, key );
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result = pushClient.CreatePush( GetPushFromServer );
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pushClients.Add( pushClient );
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}
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else
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{
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result = new OperateResult( StringResources.Language.KeyIsExistAlready );
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}
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hybirdLock.Leave( );
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return result;
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}
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#endregion
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#region Public Properties
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/// <summary>
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/// 在线客户端的数量
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/// </summary>
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public int OnlineCount
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{
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get => onlineCount;
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}
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/// <summary>
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/// 在客户端上线之后，是否推送缓存的数据，默认设置为true
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/// </summary>
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public bool PushCacheAfterConnect
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{
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get { return isPushCacheAfterConnect; }
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set { isPushCacheAfterConnect = value; }
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}
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#endregion
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#region Private Method
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private void ReceiveCallback( IAsyncResult ar )
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{
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if (ar.AsyncState is AppSession session)
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{
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try
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{
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Socket client = session.WorkSocket;
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int bytesRead = client.EndReceive( ar );
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// 正常下线退出
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LogNet?.WriteDebug( ToString( ), string.Format( StringResources.Language.ClientOfflineInfo, session.IpEndPoint ) );
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RemoveGroupOnlien( session.KeyGroup, session.ClientUniqueID );
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}
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catch (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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// 正常下线
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LogNet?.WriteDebug( ToString( ), string.Format( StringResources.Language.ClientOfflineInfo, session.IpEndPoint ) );
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RemoveGroupOnlien( session.KeyGroup, session.ClientUniqueID );
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}
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else
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{
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LogNet?.WriteException( ToString( ), string.Format( StringResources.Language.ClientOfflineInfo, session.IpEndPoint ), ex );
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RemoveGroupOnlien( session.KeyGroup, session.ClientUniqueID );
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}
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}
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}
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}
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/// <summary>
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/// 判断当前的关键字订阅是否在服务器的词典里面
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/// </summary>
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/// <param name="key"></param>
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/// <returns></returns>
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private bool IsPushGroupOnline(string key)
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{
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bool result = false;
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dicHybirdLock.Enter( );
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if (dictPushClients.ContainsKey( key )) result = true;
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dicHybirdLock.Leave( );
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return result;
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}
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private void AddPushKey(string key)
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{
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dicHybirdLock.Enter( );
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if (!dictPushClients.ContainsKey( key ))
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{
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dictPushClients.Add( key, new PushGroupClient( ) );
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}
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dicHybirdLock.Leave( );
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}
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private PushGroupClient GetPushGroupClient(string key)
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{
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PushGroupClient result = null;
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dicHybirdLock.Enter( );
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if (dictPushClients.ContainsKey( key ))
|
|
|
|
|
|
{
|
|
|
|
|
|
result = dictPushClients[key];
|
|
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
|
|
|
|
|
result = new PushGroupClient( );
|
|
|
|
|
|
dictPushClients.Add( key, result );
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
dicHybirdLock.Leave( );
|
|
|
|
|
|
|
|
|
|
|
|
return result;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// 移除客户端的数据信息
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
/// <param name="key">指定的客户端</param>
|
|
|
|
|
|
/// <param name="clientID">指定的客户端唯一的id信息</param>
|
|
|
|
|
|
private void RemoveGroupOnlien( string key, string clientID )
|
|
|
|
|
|
{
|
|
|
|
|
|
PushGroupClient push = GetPushGroupClient( key );
|
|
|
|
|
|
if (push != null)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (push.RemovePushClient( clientID ))
|
|
|
|
|
|
{
|
|
|
|
|
|
// 移除成功
|
|
|
|
|
|
System.Threading.Interlocked.Decrement( ref onlineCount );
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
private void SendString(AppSession appSession, string content)
|
|
|
|
|
|
{
|
|
|
|
|
|
System.Threading.ThreadPool.QueueUserWorkItem(new System.Threading.WaitCallback(m =>
|
|
|
|
|
|
{
|
|
|
|
|
|
PushSendAsync(appSession, HslProtocol.CommandBytes(0, Token, content));
|
|
|
|
|
|
}), null);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#region Send Bytes Async
|
|
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// 发送数据的方法
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
/// <param name="session">通信用的核心对象</param>
|
|
|
|
|
|
/// <param name="content">完整的字节信息</param>
|
|
|
|
|
|
internal void PushSendAsync( AppSession session, byte[] content )
|
|
|
|
|
|
{
|
|
|
|
|
|
try
|
|
|
|
|
|
{
|
|
|
|
|
|
// 进入发送数据的锁，然后开启异步的数据发送
|
|
|
|
|
|
session.HybirdLockSend.Enter( );
|
|
|
|
|
|
|
|
|
|
|
|
// 启用另外一个网络封装对象进行发送数据
|
|
|
|
|
|
AsyncStateSend state = new AsyncStateSend( )
|
|
|
|
|
|
{
|
|
|
|
|
|
WorkSocket = session.WorkSocket,
|
|
|
|
|
|
Content = content,
|
|
|
|
|
|
AlreadySendLength = 0,
|
|
|
|
|
|
HybirdLockSend = session.HybirdLockSend,
|
|
|
|
|
|
Key = session.KeyGroup,
|
|
|
|
|
|
ClientId = session.ClientUniqueID,
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
state.WorkSocket.BeginSend(
|
|
|
|
|
|
state.Content,
|
|
|
|
|
|
state.AlreadySendLength,
|
|
|
|
|
|
state.Content.Length - state.AlreadySendLength,
|
|
|
|
|
|
SocketFlags.None,
|
|
|
|
|
|
new AsyncCallback( PushSendCallBack ),
|
|
|
|
|
|
state );
|
|
|
|
|
|
}
|
|
|
|
|
|
catch (ObjectDisposedException)
|
|
|
|
|
|
{
|
|
|
|
|
|
// 不操作
|
|
|
|
|
|
session.HybirdLockSend.Leave( );
|
|
|
|
|
|
RemoveGroupOnlien( session.KeyGroup, session.ClientUniqueID );
|
|
|
|
|
|
}
|
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
|
{
|
|
|
|
|
|
session.HybirdLockSend.Leave( );
|
|
|
|
|
|
if (!ex.Message.Contains( StringResources.Language.SocketRemoteCloseException ))
|
|
|
|
|
|
{
|
|
|
|
|
|
LogNet?.WriteException( ToString( ), StringResources.Language.SocketSendException, ex );
|
|
|
|
|
|
}
|
|
|
|
|
|
RemoveGroupOnlien( session.KeyGroup, session.ClientUniqueID );
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// 发送回发方法
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
/// <param name="ar">异步数据</param>
|
|
|
|
|
|
internal void PushSendCallBack( IAsyncResult ar )
|
|
|
|
|
|
{
|
|
|
|
|
|
if (ar.AsyncState is AsyncStateSend stateone)
|
|
|
|
|
|
{
|
|
|
|
|
|
try
|
|
|
|
|
|
{
|
|
|
|
|
|
stateone.AlreadySendLength += stateone.WorkSocket.EndSend( ar );
|
|
|
|
|
|
if (stateone.AlreadySendLength < stateone.Content.Length)
|
|
|
|
|
|
{
|
|
|
|
|
|
// 继续发送
|
|
|
|
|
|
stateone.WorkSocket.BeginSend( stateone.Content,
|
|
|
|
|
|
stateone.AlreadySendLength,
|
|
|
|
|
|
stateone.Content.Length - stateone.AlreadySendLength,
|
|
|
|
|
|
SocketFlags.None,
|
|
|
|
|
|
new AsyncCallback( PushSendCallBack ),
|
|
|
|
|
|
stateone );
|
|
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
|
|
|
|
|
stateone.HybirdLockSend.Leave( );
|
|
|
|
|
|
// 发送完成
|
|
|
|
|
|
stateone = null;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
catch (ObjectDisposedException)
|
|
|
|
|
|
{
|
|
|
|
|
|
stateone.HybirdLockSend.Leave( );
|
|
|
|
|
|
RemoveGroupOnlien( stateone.Key, stateone.ClientId );
|
|
|
|
|
|
}
|
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
|
{
|
|
|
|
|
|
LogNet?.WriteException( ToString( ), StringResources.Language.SocketEndSendException, ex );
|
|
|
|
|
|
stateone.HybirdLockSend.Leave( );
|
|
|
|
|
|
RemoveGroupOnlien( stateone.Key, stateone.ClientId );
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
private void GetPushFromServer( NetPushClient pushClient, string data )
|
|
|
|
|
|
{
|
|
|
|
|
|
// 推送给其他的客户端，当然也有可能是工作站
|
|
|
|
|
|
PushString( pushClient.KeyWord, data );
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
|
|
|
|
|
|
#region Private Member
|
|
|
|
|
|
|
|
|
|
|
|
private Dictionary<string, string> dictSendHistory; // 词典缓存的数据发送对象
|
|
|
|
|
|
private Dictionary<string, PushGroupClient> dictPushClients; // 系统的数据词典
|
|
|
|
|
|
private SimpleHybirdLock dicHybirdLock; // 词典锁
|
|
|
|
|
|
private SimpleHybirdLock dicSendCacheLock; // 缓存数据的锁
|
|
|
|
|
|
private Action<AppSession, string> sendAction; // 发送数据的委托
|
|
|
|
|
|
private int onlineCount = 0; // 在线客户端的数量，用于监视显示
|
|
|
|
|
|
private List<NetPushClient> pushClients; // 客户端列表
|
|
|
|
|
|
private SimpleHybirdLock hybirdLock; // 客户端列表的锁
|
|
|
|
|
|
private bool isPushCacheAfterConnect = true; // 在客户端上线之后，是否推送缓存的数据
|
|
|
|
|
|
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
|
|
|
|
|
|
#region Object Override
|
|
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
|
|
|
/// 返回表示当前对象的字符串
|
|
|
|
|
|
/// </summary>
|
|
|
|
|
|
/// <returns>字符串</returns>
|
|
|
|
|
|
public override string ToString()
|
|
|
|
|
|
{
|
|
|
|
|
|
return "NetPushServer";
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
}
|
