本文引见

TcpListener 类供应一些简朴要领，用于在阻挠同步形式下侦听和接收传入衔接要求。 可运用 TcpClient 或 Socket 来衔接 TcpListener。 可运用 IPEndPoint、当地 IP 地点及端口号或许仅运用端口号，来竖立 TcpListener。 能够将当地 IP 地点指定为 Any，将当地端口号指定为 0（假如愿望基本效劳供应顺序为您分派这些值）。 假如您挑选如许做，可在衔接套接字后运用 LocalEndpoint 属性来标识已指定的信息。运用 Start 要领，可最先侦听传入的衔接要求。 Start 将对传入衔接举行列队，直至您挪用 Stop 要领或它已完成 MaxConnections 列队为止。 可运用 AcceptSocket 或 AcceptTcpClient 从传入衔接要求行列提取衔接。 这两种要领将阻挠。 假如要防止阻挠，可起首运用 Pending 要领来肯定行列中是不是有可用的衔接要求。
虽然TcpListener已封装的比较不错了，我们于是就运用它在组织一个比较不错的同步TCP效劳器，这里依旧和前两章一样，给出效劳器中的代码，代码中解释很细致，我也会给出相干的封装类。

TcpListener同步TCP效劳器

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Net;
using System.Threading;

namespace NetFrame.Net.TCP.Listener.Synchronous
{
    /// <summary>
    /// TcpListener完成同步TCP效劳器
    /// </summary>
    public class TCPServer
    {
        #region Fields
        /// <summary>
        /// 效劳器顺序许可的最大客户端衔接数
        /// </summary>
        private int _maxClient;

        /// <summary>
        /// 当前的衔接的客户端数
        /// </summary>
        private int _clientCount;

        /// <summary>
        /// 效劳器运用的异步TcpListener
        /// </summary>
        private TcpListener _listener;

        /// <summary>
        /// 客户端会话列表
        /// </summary>
        private List<TCPClientHandle> _clients;

        private bool disposed = false;

        #endregion

        #region Properties

        /// <summary>
        /// 效劳器是不是正在运转
        /// </summary>
        public bool IsRunning { get; private set; }
        /// <summary>
        /// 监听的IP地点
        /// </summary>
        public IPAddress Address { get; private set; }
        /// <summary>
        /// 监听的端口
        /// </summary>
        public int Port { get; private set; }
        /// <summary>
        /// 通讯运用的编码
        /// </summary>
        public Encoding Encoding { get; set; }

        #endregion

        #region 组织器
        /// <summary>
        /// 同步TCP效劳器
        /// </summary>
        /// <param name="listenPort">监听的端口</param>
        public TCPServer(int listenPort)
            : this(IPAddress.Any, listenPort, 1024)
        {
        }

        /// <summary>
        /// 同步TCP效劳器
        /// </summary>
        /// <param name="localEP">监听的终结点</param>
        public TCPServer(IPEndPoint localEP)
            : this(localEP.Address, localEP.Port, 1024)
        {
        }

        /// <summary>
        /// 同步TCP效劳器
        /// </summary>
        /// <param name="localIPAddress">监听的IP地点</param>
        /// <param name="listenPort">监听的端口</param>
        /// <param name="maxClient">最大客户端数目</param>
        public TCPServer(IPAddress localIPAddress, int listenPort, int maxClient)
        {
            this.Address = localIPAddress;
            this.Port = listenPort;
            this.Encoding = Encoding.Default;

            _maxClient = maxClient;
            _clients = new List<TCPClientHandle>();
            _listener = new TcpListener(new IPEndPoint(this.Address, this.Port));
        }

        #endregion

        #region Method
        /// <summary>
        /// 启动效劳器
        /// </summary>
        public void Start()
        {
            if (!IsRunning)
            {
                IsRunning = true;
                _listener.Start();
                Thread thread = new Thread(Accept);
                thread.Start();
            }
        }
        /// <summary>
        /// 最先举行监听
        /// </summary>
        private void Accept()
        {
            TCPClientHandle handle;
            while (IsRunning)
            {
                TcpClient client = _listener.AcceptTcpClient();
                if (_clientCount >= _maxClient)
                {
                    //TODO 触发事宜
                }
                else
                {
                    handle = new TCPClientHandle(client);
                    _clientCount++;
                    _clients.Add(handle);

                    //TODO 竖立一个处置惩罚客户端的线程并启动
                    //运用线程池来操纵
                    new Thread(new ThreadStart(handle.RecevieData)).Start();
                }
            }

        }
        /// <summary>
        /// 住手效劳器
        /// </summary>
        public void Stop()
        {
            if (IsRunning)
            {
                IsRunning = false;
                _listener.Stop();
                //TODO 封闭对一切客户端的衔接
            }
        }
        /// <summary>
        /// 发送函数
        /// </summary>
        public void Send(string msg, TcpClient client)
        {
            //TODO
        }

        #endregion

        #region 事宜

        /// <summary>
        /// 与客户端的衔接已竖立事宜
        /// </summary>
        public event EventHandler<TCPEventArgs> ClientConnected;
        /// <summary>
        /// 与客户端的衔接已断开事宜
        /// </summary>
        public event EventHandler<TCPEventArgs> ClientDisconnected;

        /// <summary>
        /// 触发客户端衔接事宜
        /// </summary>
        /// <param name="state"></param>
        private void RaiseClientConnected(TCPClientHandle handle)
        {
            if (ClientConnected != null)
            {
                ClientConnected(this, new TCPEventArgs(handle));
            }
        }
        /// <summary>
        /// 触发客户端衔接断开事宜
        /// </summary>
        /// <param name="client"></param>
        private void RaiseClientDisconnected(Socket client)
        {
            if (ClientDisconnected != null)
            {
                ClientDisconnected(this, new TCPEventArgs("衔接断开"));
            }
        }

        /// <summary>
        /// 接收到数据事宜
        /// </summary>
        public event EventHandler<TCPEventArgs> DataReceived;

        private void RaiseDataReceived(TCPClientHandle handle)
        {
            if (DataReceived != null)
            {
                DataReceived(this, new TCPEventArgs(handle));
            }
        }

        /// <summary>
        /// 数据发送事宜
        /// </summary>
        public event EventHandler<TCPEventArgs> CompletedSend;

        /// <summary>
        /// 触发数据发送事宜
        /// </summary>
        /// <param name="state"></param>
        private void RaiseCompletedSend(TCPClientHandle handle)
        {
            if (CompletedSend != null)
            {
                CompletedSend(this, new TCPEventArgs(handle));
            }
        }


        /// <summary>
        /// 收集毛病事宜
        /// </summary>
        public event EventHandler<TCPEventArgs> NetError;
        /// <summary>
        /// 触发收集毛病事宜
        /// </summary>
        /// <param name="state"></param>
        private void RaiseNetError(TCPClientHandle handle)
        {
            if (NetError != null)
            {
                NetError(this, new TCPEventArgs(handle));
            }
        }

        /// <summary>
        /// 非常事宜
        /// </summary>
        public event EventHandler<TCPEventArgs> OtherException;
        /// <summary>
        /// 触发非常事宜
        /// </summary>
        /// <param name="state"></param>
        private void RaiseOtherException(TCPClientHandle handle, string descrip)
        {
            if (OtherException != null)
            {
                OtherException(this, new TCPEventArgs(descrip, handle));
            }
        }
        private void RaiseOtherException(TCPClientHandle handle)
        {
            RaiseOtherException(handle, "");
        }

        #endregion

        #region Close

        /// <summary>
        /// 封闭一个与客户端之间的会话
        /// </summary>
        /// <param name="handle">须要封闭的客户端会话对象</param>
        public void Close(TCPClientHandle handle)
        {
            if (handle != null)
            {
                _clients.Remove(handle);
                handle.Dispose();
                _clientCount--;
                //TODO 触发封闭事宜

            }
        }
        /// <summary>
        /// 封闭一切的客户端会话,与一切的客户端衔接会断开
        /// </summary>
        public void CloseAllClient()
        {
            foreach (TCPClientHandle handle in _clients)
            {
                Close(handle);
            }
            _clientCount = 0;
            _clients.Clear();
        }
        #endregion

        #region 开释
        /// <summary>
        /// Performs application-defined tasks associated with freeing, 
        /// releasing, or resetting unmanaged resources.
        /// </summary>
        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        /// <summary>
        /// Releases unmanaged and - optionally - managed resources
        /// </summary>
        /// <param name="disposing"><c>true</c> to release 
        /// both managed and unmanaged resources; <c>false</c> 
        /// to release only unmanaged resources.</param>
        protected virtual void Dispose(bool disposing)
        {
            if (!this.disposed)
            {
                if (disposing)
                {
                    try
                    {
                        Stop();
                        if (_listener != null)
                        {
                            _listener = null;
                        }
                    }
                    catch (SocketException)
                    {
                        //TODO 非常
                    }
                }
                disposed = true;
            }
        }
        #endregion
    }
}

客户端处置惩罚封装类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.IO;

namespace NetFrame.Net.TCP.Listener.Synchronous
{
    /// <summary>
    /// TcpListener完成同步TCP效劳器 的客户端衔接处置惩罚类
    /// </summary>
    public class TCPClientHandle
    {
        private TcpClient _tcpclient;

        private BinaryReader rs;

        private BinaryWriter ws;

        /// <summary>
        /// 标识是不是与客户端相衔接
        /// </summary>
        private bool _is_connect;
        public bool IsConnect
        {
            get { return _is_connect; }
            set { _is_connect = value; }
        }

        /// <summary>
        /// 数据接收缓冲区
        /// </summary>
        private byte[] _recvBuffer;

        public TCPClientHandle(TcpClient client)
        {
            _tcpclient = client;
            rs = new BinaryReader(client.GetStream());
            ws = new BinaryWriter(client.GetStream());
            // NetworkStream ns = tmpTcpClient.GetStream();
            // if(ns.CanRead&&ns.CanWrite)
            _recvBuffer=new byte[client.ReceiveBufferSize];
        }

        /// <summary>
        /// 接收数据
        /// </summary>
        public void RecevieData()
        {
            int len = 0;
            while (_is_connect)
            {
                try
                {
                    len = rs.Read(_recvBuffer, 0, _recvBuffer.Length);
                }
                catch (Exception)
                {
                    break;
                }
                if (len == 0)
                {
                    //the client has disconnected from server
                    break;
                }
                //TODO 处置惩罚收到的数据
                
            }
        }
        /// <summary>
        /// 向客户端发送数据
        /// </summary>
        /// <param name="msg"></param>
        public void SendData(string msg)
        {
            byte[] data = Encoding.Default.GetBytes(msg);
            try
            {
                ws.Write(data, 0, data.Length);
                ws.Flush();
            }
            catch (Exception)
            {
                //TODO 处置惩罚非常
            }
        }

        #region 事宜


        //TODO 音讯发送事宜
        //TODO 数据收到事宜
        //TODO 非常处置惩罚事宜

        #endregion

        #region 开释
        /// <summary>
        /// Performs application-defined tasks associated with freeing, 
        /// releasing, or resetting unmanaged resources.
        /// </summary>
        public void Dispose()
        {
            _is_connect = false;
            if (_tcpclient != null)
            {
                _tcpclient.Close();
                _tcpclient = null;
            }
            GC.SuppressFinalize(this);
        }

        #endregion
    }
}

Tcp效劳器事宜参数类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace NetFrame.Net.TCP.Listener.Synchronous
{
    /// <summary>
    /// 同步TcpListener TCP效劳器事宜类
    /// </summary>
    public class TCPEventArgs : EventArgs
    {
        /// <summary>
        /// 提醒信息
        /// </summary>
        public string _msg;

        /// <summary>
        /// 客户端状况封装类
        /// </summary>
        public TCPClientHandle _handle;

        /// <summary>
        /// 是不是已处置惩罚过了
        /// </summary>
        public bool IsHandled { get; set; }

        public TCPEventArgs(string msg)
        {
            this._msg = msg;
            IsHandled = false;
        }
        public TCPEventArgs(TCPClientHandle handle)
        {
            this._handle = handle;
            IsHandled = false;
        }
        public TCPEventArgs(string msg, TCPClientHandle handle)
        {
            this._msg = msg;
            this._handle = handle;
            IsHandled = false;
        }
    }
}

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