SuperSocket中的Server是如何初Initialize的

第一个函数

d:sourcecodegithubsupersocketquickstartasic elnetserver_startbyconfigprogram.cs

static void Main(string[] args)
        {
            Console.WriteLine("Press any key to start the server!");

            Console.ReadKey();
            Console.WriteLine();

            var bootstrap = BootstrapFactory.CreateBootstrap();

            if (!bootstrap.Initialize())
            {
                Console.WriteLine("Failed to initialize!");
                Console.ReadKey();
                return;
            }

            var result = bootstrap.Start();

            Console.WriteLine("Start result: {0}!", result);

            if (result == StartResult.Failed)
            {
                Console.WriteLine("Failed to start!");
                Console.ReadKey();
                return;
            }

            Console.WriteLine("Press key 'q' to stop it!");

            while (Console.ReadKey().KeyChar != 'q')
            {
                Console.WriteLine();
                continue;
            }

            Console.WriteLine();

            //Stop the appServer
            bootstrap.Stop();

            Console.WriteLine("The server was stopped!");
        }

第二个函数

d:sourcecodegithubsupersocketsocketenginedefaultbootstrap.cs

    /// <summary>
        /// Initializes the bootstrap with the configuration
        /// </summary>
        /// <returns></returns>
        public virtual bool Initialize()
        {
            return Initialize(c => c);
        }

第三个函数

d:sourcecodegithubsupersocketsocketenginedefaultbootstrap.cs

        /// <summary>
        /// Initializes the bootstrap with the configuration and config resolver.
        /// </summary>
        /// <param name="serverConfigResolver">The server config resolver.</param>
        /// <returns></returns>
        public virtual bool Initialize(Func<IServerConfig, IServerConfig> serverConfigResolver)
        {
            return Initialize(serverConfigResolver, null);
        }

第四个函数

d:sourcecodegithubsupersocketsocketenginedefaultbootstrap.cs

 /// <summary>
        /// Initializes the bootstrap with the configuration, config resolver and log factory.
        /// </summary>
        /// <param name="serverConfigResolver">The server config resolver.</param>
        /// <param name="logFactory">The log factory.</param>
        /// <returns></returns>
        public virtual bool Initialize(Func<IServerConfig, IServerConfig> serverConfigResolver, ILogFactory logFactory)
        {
            if (m_Initialized)
                throw new Exception("The server had been initialized already, you cannot initialize it again!");

            if (logFactory != null && !string.IsNullOrEmpty(m_Config.LogFactory))
            {
                throw new ArgumentException("You cannot pass in a logFactory parameter, if you have configured a root log factory.", "logFactory");
            }

            IEnumerable<WorkItemFactoryInfo> workItemFactories;

            using (var factoryInfoLoader = GetWorkItemFactoryInfoLoader(m_Config, logFactory))
            {
                var bootstrapLogFactory = factoryInfoLoader.GetBootstrapLogFactory();

                logFactory = bootstrapLogFactory.ExportFactory.CreateExport<ILogFactory>();

                LogFactory = logFactory;
                m_GlobalLog = logFactory.GetLog(this.GetType().Name);

                AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);

                try
                {
                    workItemFactories = factoryInfoLoader.LoadResult(serverConfigResolver);
                }
                catch (Exception e)
                {
                    if (m_GlobalLog.IsErrorEnabled)
                        m_GlobalLog.Error(e);

                    return false;
                }
            }

            m_AppServers = new List<IWorkItem>(m_Config.Servers.Count());

            IWorkItem serverManager = null;

            //Initialize servers
            foreach (var factoryInfo in workItemFactories)
            {
                IWorkItem appServer = InitializeAndSetupWorkItem(factoryInfo);

                if (appServer == null)
                    return false;

                if (factoryInfo.IsServerManager)
                    serverManager = appServer;
                else if (!(appServer is IsolationAppServer))//No isolation
                {
                    //In isolation mode, cannot check whether is server manager in the factory info loader
                    if (TypeValidator.IsServerManagerType(appServer.GetType()))
                        serverManager = appServer;
                }

                m_AppServers.Add(appServer);
            }

            if (serverManager != null)
                m_ServerManager = serverManager;

            if (!m_Config.DisablePerformanceDataCollector)
            {
                m_PerfMonitor = new PerformanceMonitor(m_Config, m_AppServers, serverManager, logFactory);

                if (m_GlobalLog.IsDebugEnabled)
                    m_GlobalLog.Debug("The PerformanceMonitor has been initialized!");
            }

            if (m_GlobalLog.IsDebugEnabled)
                m_GlobalLog.Debug("The Bootstrap has been initialized!");

            try
            {
                RegisterRemotingService();
            }
            catch (Exception e)
            {
                if (m_GlobalLog.IsErrorEnabled)
                    m_GlobalLog.Error("Failed to register remoting access service!", e);

                return false;
            }

            m_Initialized = true;

            return true;
        }

第五个函数

d:sourcecodegithubsupersocketsocketenginedefaultbootstrap.cs

private IWorkItem InitializeAndSetupWorkItem(WorkItemFactoryInfo factoryInfo)
        {
            IWorkItem appServer;

            try
            {
                appServer = CreateWorkItemInstance(factoryInfo.ServerType, factoryInfo.StatusInfoMetadata);

                if (m_GlobalLog.IsDebugEnabled)
                    m_GlobalLog.DebugFormat("The server instance {0} has been created!", factoryInfo.Config.Name);
            }
            catch (Exception e)
            {
                if (m_GlobalLog.IsErrorEnabled)
                    m_GlobalLog.Error(string.Format("Failed to create server instance {0}!", factoryInfo.Config.Name), e);
                return null;
            }

            var exceptionSource = appServer as IExceptionSource;

            if (exceptionSource != null)
                exceptionSource.ExceptionThrown += new EventHandler<ErrorEventArgs>(exceptionSource_ExceptionThrown);


            var setupResult = false;

            try
            {
                setupResult = SetupWorkItemInstance(appServer, factoryInfo);

                if (m_GlobalLog.IsDebugEnabled)
                    m_GlobalLog.DebugFormat("The server instance {0} has been initialized!", appServer.Name);
            }
            catch (Exception e)
            {
                m_GlobalLog.Error(e);
                setupResult = false;
            }

            if (!setupResult)
            {
                if (m_GlobalLog.IsErrorEnabled)
                    m_GlobalLog.Error("Failed to setup server instance!");

                return null;
            }

            return appServer;
        }

第六个函数

d:sourcecodegithubsupersocketsocketenginedefaultbootstrap.cs

   internal virtual bool SetupWorkItemInstance(IWorkItem workItem, WorkItemFactoryInfo factoryInfo)
        {
            try
            {
                //Share AppDomain AppServers also share same socket server factory and log factory instances
                factoryInfo.SocketServerFactory.ExportFactory.EnsureInstance();
                factoryInfo.LogFactory.ExportFactory.EnsureInstance();
            }
            catch (Exception e)
            {
                if (m_GlobalLog.IsErrorEnabled)
                    m_GlobalLog.Error(e);

                return false;
            }

            return workItem.Setup(this, factoryInfo.Config, factoryInfo.ProviderFactories.ToArray());
        }

第七个函数

d:sourcecodegithubsupersocketsocketbaseappserverbase.cs

        /// <summary>
        /// Setups the specified root config.
        /// </summary>
        /// <param name="bootstrap">The bootstrap.</param>
        /// <param name="config">The socket server instance config.</param>
        /// <param name="factories">The factories.</param>
        /// <returns></returns>
        bool IWorkItem.Setup(IBootstrap bootstrap, IServerConfig config, ProviderFactoryInfo[] factories)
        {
            if (bootstrap == null)
                throw new ArgumentNullException("bootstrap");

            Bootstrap = bootstrap;

            if (factories == null)
                throw new ArgumentNullException("factories");

            TrySetInitializedState();

            var rootConfig = bootstrap.Config;

            SetupBasic(rootConfig, config, GetSingleProviderInstance<ISocketServerFactory>(factories, ProviderKey.SocketServerFactory));

            if (!SetupLogFactory(GetSingleProviderInstance<ILogFactory>(factories, ProviderKey.LogFactory)))
                return false;

            Logger = CreateLogger(this.Name);

            IEnumerable<IConnectionFilter> connectionFilters = null;

            if (!TryGetProviderInstances(factories, ProviderKey.ConnectionFilter, null,
                    (p, f) =>
                    {
                        var ret = p.Initialize(f.Name, this);

                        if(!ret)
                        {
                            Logger.ErrorFormat("Failed to initialize the connection filter: {0}.", f.Name);
                        }

                        return ret;
                    }, out connectionFilters))
            {
                return false;
            }

            if (!SetupMedium(
                    GetSingleProviderInstance<IReceiveFilterFactory<TRequestInfo>>(factories, ProviderKey.ReceiveFilterFactory),
                    connectionFilters,
                    GetProviderInstances<ICommandLoader<ICommand<TAppSession, TRequestInfo>>>(
                            factories,
                            ProviderKey.CommandLoader,
                            (t) => Activator.CreateInstance(t.MakeGenericType(typeof(ICommand<TAppSession, TRequestInfo>))))))
            {
                return false;
            }

            if (!SetupAdvanced(config))
                return false;

            if (!Setup(rootConfig, config))
                return false;

            if (!SetupFinal())
                return false;

            m_StateCode = ServerStateConst.NotStarted;
            return true;
        }

第八个函数

d:sourcecodegithubsupersocketsocketbaseappserverbase.cs

     private bool SetupFinal()
        {
            //Check receiveFilterFactory
            if (ReceiveFilterFactory == null)
            {
                ReceiveFilterFactory = CreateDefaultReceiveFilterFactory();

                if (ReceiveFilterFactory == null)
                {
                    if (Logger.IsErrorEnabled)
                        Logger.Error("receiveFilterFactory is required!");

                    return false;
                }
            }

            var plainConfig = Config as ServerConfig;

            if (plainConfig == null)
            {
                //Using plain config model instead of .NET configuration element to improve performance
                plainConfig = new ServerConfig(Config);

                if (string.IsNullOrEmpty(plainConfig.Name))
                    plainConfig.Name = Name;

                Config = plainConfig;
            }

            try
            {
                m_ServerStatus = new StatusInfoCollection();
                m_ServerStatus.Name = Name;
                m_ServerStatus.Tag = Name;
                m_ServerStatus[StatusInfoKeys.MaxConnectionNumber] = Config.MaxConnectionNumber;
                m_ServerStatus[StatusInfoKeys.Listeners] = m_Listeners;
            }
            catch (Exception e)
            {
                if (Logger.IsErrorEnabled)
                    Logger.Error("Failed to create ServerSummary instance!", e);

                return false;
            }

            return SetupSocketServer();
        }

第九个函数

d:sourcecodegithubsupersocketsocketbaseappserverbase.cs

  /// <summary>
        /// Setups the socket server.instance
        /// </summary>
        /// <returns></returns>
        private bool SetupSocketServer()
        {
            try
            {
                m_SocketServer = m_SocketServerFactory.CreateSocketServer<TRequestInfo>(this, m_Listeners, Config);
                return m_SocketServer != null;
            }
            catch (Exception e)
            {
                if (Logger.IsErrorEnabled)
                    Logger.Error(e);

                return false;
            }
        }

第十个函数

d:sourcecodegithubsupersocketsocketenginesocketserverfactory.cs

 /// <summary>
    /// Default socket server factory
    /// </summary>
    public class SocketServerFactory : ISocketServerFactory
    {
        #region ISocketServerFactory Members

        /// <summary>
        /// Creates the socket server.
        /// </summary>
        /// <typeparam name="TRequestInfo">The type of the request info.</typeparam>
        /// <param name="appServer">The app server.</param>
        /// <param name="listeners">The listeners.</param>
        /// <param name="config">The config.</param>
        /// <returns></returns>
        public ISocketServer CreateSocketServer<TRequestInfo>(IAppServer appServer, ListenerInfo[] listeners, IServerConfig config)
            where TRequestInfo : IRequestInfo
        {
            if (appServer == null)
                throw new ArgumentNullException("appServer");

            if (listeners == null)
                throw new ArgumentNullException("listeners");

            if (config == null)
                throw new ArgumentNullException("config");

            switch(config.Mode)
            {
                case(SocketMode.Tcp):
                    return new AsyncSocketServer(appServer, listeners);
                case(SocketMode.Udp):
                    return new UdpSocketServer<TRequestInfo>(appServer, listeners);
                default:
                    throw new NotSupportedException("Unsupported SocketMode:" + config.Mode);
            }
        }

        #endregion
    }