WebSocket(SuperSocket.WebSocket实现)服务端主动断开客户端的连接

WebSocket(SuperSocket.WebSocket实现)服务端主动断开客户端的连接

使用SuperSocket.WebSocket实现的WebSocket服务端，当有WebSocket客户端连接上以后，WebSocket客户端如果发消息太长或者过大时，就会出现WebSocket主动断开客户端的连接的问题，解决如下：

using SuperSocket.SocketBase.Config;
using SuperWebSocket;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;

namespace TESTeee
{
    internal class Program
    {
        public static WebSocketServer ws = null;
        static void Main(string[] args)
        {
            Console.WriteLine("WebSocket服务");
            ws = new WebSocketServer();
            ws.NewSessionConnected += Ws_NewSessionConnected;
            ws.NewMessageReceived += Ws_NewMessageReceived;
            ws.SessionClosed += Ws_SessionClosed;
            //SuperSocket可以通过对ServerConfig对象进行设置，可以设置最大接收缓存大小(ReceiveBufferSize),也可以设置请求信息的最大长度(MaxRequestLength)有所限制，默认请求最大长度为1024. 该配置可以通过一个ServerConfig的对象进行设置
            var config = new ServerConfig()
            {
                #region MyRegion
                //public const int DefaultReceiveBufferSize = 4096;
                //public const int DefaultListenBacklog = 100;
                //public const int DefaultKeepAliveTime = 600;
                //public const int DefaultSessionSnapshotInterval = 5;
                //public const int DefaultSendBufferSize = 2048;
                //public const int DefaultIdleSessionTimeOut = 300;
                //public const int DefaultKeepAliveInterval = 60;
                //public const int DefaultSendTimeout = 5000;
                //public const int DefaultMaxRequestLength = 1024;
                //public const int DefaultSendingQueueSize = 5;
                //public const int DefaultMaxConnectionNumber = 100;
                //public const int DefaultClearIdleSessionInterval = 120;
                #endregion
                // 限制请求的数据长度最大为1M
                MaxRequestLength = 1024 * 1024,
                ReceiveBufferSize = 1024 * 1024,
                Ip = "127.0.0.1",
                Port = 1234
            };
            //ws.Setup(config);
            //if (!ws.Setup("127.0.0.1", 1234))
            //if (!ws.Setup(config))
            //{
            //    Console.WriteLine("ChatWebSocket 设置WebSocket服务侦听地址失败");
            //    return;
            //}
            ws.Setup(config, logFactory: new SuperSocket.SocketBase.Logging.ConsoleLogFactory());
            if (!ws.Start())
            {
                Console.WriteLine("ChatWebSocket 启动WebSocket服务侦听失败");
                return;
            }
            Console.WriteLine("ChatWebSocket 启动服务成功");
            Console.ReadKey();
            ws.Stop();
        }

        public static void Ws_NewSessionConnected(WebSocketSession session)
        {
            Console.WriteLine("{0:HH:MM:ss}  与客户端:{1}创建新会话", DateTime.Now, GetSessionName(session));
            var msg = string.Format("{0:HH:MM:ss} {1} 进入聊天室", DateTime.Now, GetSessionName(session));

            SendToAll(session, msg);
        }

        private static void Ws_NewMessageReceived(WebSocketSession session, string value)
        {
            var msg = string.Format("{0:HH:MM:ss} {1} 说: {2}", DateTime.Now, GetSessionName(session), value);
            Console.WriteLine($"{msg}");
            SendToAll(session, value);
        }

        public static void Ws_SessionClosed(WebSocketSession session, SuperSocket.SocketBase.CloseReason value)
        {
            Console.WriteLine("{0:HH:MM:ss}  与客户端:{1}的会话被关闭 原因：{2}", DateTime.Now, GetSessionName(session), value);
            var msg = string.Format("{0:HH:MM:ss} {1} 离开聊天室", DateTime.Now, GetSessionName(session));
            SendToAll(session, msg);
        }

        /// 

        /// 启动服务
        /// 
        /// 
        public static void Start()
        {
            if (!ws.Setup("127.0.0.1", 1234))
            {
                Console.WriteLine("ChatWebSocket 设置WebSocket服务侦听地址失败");
                return;
            }

            if (!ws.Start())
            {
                Console.WriteLine("ChatWebSocket 启动WebSocket服务侦听失败");
                return;
            }

            Console.WriteLine("ChatWebSocket 启动服务成功");
        }

        /// 

        /// 停止侦听服务
        /// 
        public static void Stop()
        {

            if (ws != null)
            {
                ws.Stop();
            }
        }

        public static string GetSessionName(WebSocketSession session)
        {
            return HttpUtility.UrlDecode(session.Path.TrimStart('/'));
        }

        public static void SendToAll(WebSocketSession session, string msg)
        {
            foreach (var sendSession in session.AppServer.GetAllSessions())
            {
                sendSession.Send(msg);
            }
        }
    }
}

SuperSocket可以通过一个ServerConfig的对象进行配置设置，ServerConfig对象中默认配置如下：

 //
        // Summary:
        //     Default ReceiveBufferSize
        public const int DefaultReceiveBufferSize = 4096;
        //
        // Summary:
        //     The default listen backlog
        public const int DefaultListenBacklog = 100;
        //
        // Summary:
        //     The default keep alive time
        public const int DefaultKeepAliveTime = 600;
        //
        // Summary:
        //     The default session snapshot interval
        public const int DefaultSessionSnapshotInterval = 5;
        //
        // Summary:
        //     The default send buffer size
        public const int DefaultSendBufferSize = 2048;
        //
        // Summary:
        //     Default idle session timeout
        public const int DefaultIdleSessionTimeOut = 300;
        //
        // Summary:
        //     The default keep alive interval
        public const int DefaultKeepAliveInterval = 60;
        //
        // Summary:
        //     Default send timeout value, in milliseconds
        public const int DefaultSendTimeout = 5000;
        //
        // Summary:
        //     Default MaxRequestLength
        public const int DefaultMaxRequestLength = 1024;
        //
        // Summary:
        //     Default sending queue size
        public const int DefaultSendingQueueSize = 5;
        //
        // Summary:
        //     Default MaxConnectionNumber
        public const int DefaultMaxConnectionNumber = 100;
        //
        // Summary:
        //     Default clear idle session interval
        public const int DefaultClearIdleSessionInterval = 120;