Socket（Tcp）通信服务端

又是一段时间了，感觉最近挺乱的，今天有些时间，搞了下socket的服务器。

 

先来看下服务端和客户端的流程如下：

 

我个人比较偏爱异步通信，今天主要以异步通信来讲一讲socket

 

1、Socket的构造函数来创建Socket：

Socket(AddressFamily,SocketType, ProtocolType)

AddressFamily：指定的地址族

SocketType：套接字类型

ProtocolType：协议类型

参考：_listener = newSocket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);

 

2、Bind()绑定端口和IP

public void Bind

(

         EndPoint localEP

)

参考：

IPAddress_ipAddress = IPAddress.Parse("192.168.1.216");

IPEndPoint_ipEndPoint = new IPEndPoint(_ipAddress , 2222);

_listener.Bind(_ipEndPoint);

 

3、listen()监听socket

public void Listen

(

           int backlog

)

参考：_listener.Listen(10)

 

4、accept()接收来自客户端的请求

public IAsyncResult BeginAccept

(

           AsyncCallback callback,

           Object state

)

参考：_listener.BeginAccept(newAsyncCallback(AcceptCallBack),_listener);

 

5、receive()从socket中读取字符

public IAsyncResult BeginReceive(

         byte[] buffer,// Byte 类型的数组，它是存储接收到的数据的位置。

         int offset,// buffer 参数中存储所接收数据的位置，该位置从零开始计数。

         int size,//要接收的字节数。

         SocketFlags socketFlags,// SocketFlags 值的按位组合。

         AsyncCallback callback,//一个 AsyncCallback 委托，它引用操作完成时要调用的方法。

         Object state//一个用户定义对象，其中包含接收操作的相关信息。 当操作完成时，此对象会被传递给 EndReceive 委托。

)

参考：_handlerEnd.BeginReceive(_state._buffer,0,StateObject._bufferSize,0,newAsyncCallback(ReceiveCallBack),_state);

 

6、close()关闭socket，并释放资源

public void Close()

参考：_handlerEnd.Close();

 

 注意： PC端汉字传输时，需要的格式如下

string Message  = "Lee";

byte[] bytes =Encoding.GetEncoding("GB2312").GetBytes(Message);

完整参考代码如下：

usingUnityEngine;usingSystem.Collections;usingSystem;usingSystem.Net;usingSystem.Net.Sockets;usingSystem.Threading;usingSystem.Text;usingSystem.Collections.Generic; ///<summary>///StateObject为BeginReceive时的一种状态，用来存储数据///</summary>publicclass StateObject{         public Socket _workSocket;          public const int _bufferSize = 1024;          public byte[] _buffer = new byte[_bufferSize];          public StringBuilder _sb = newStringBuilder();} publicclass TcpSever {         public static ManualResetEvent _allOne= new ManualResetEvent(false);          public static TcpSever _inSingle;          private Socket _listener;         public List<Socket> _clientList =new List<Socket>();          /// <summary>         /// 单例模式的类         /// </summary>         /// <returns>Theinsigle.</returns>         public static TcpSever GetInsigle()         {                   if(_inSingle == null)                   {                            _inSingle = newTcpSever();                   }                   return _inSingle;                             }          public TcpSever ()         {                   IPAddress _ipAddress =IPAddress.Parse("192.168.1.216");                   IPEndPoint _ipEndPoint = newIPEndPoint(_ipAddress , 2222);                    _listener = newSocket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);                    _listener.Bind(_ipEndPoint);                    /// <summary>                   /// 新建_threadListenFunciton线程，用来监听客户端连接                   /// </summary>                   Thread _threadListenFunciton= new Thread(new ThreadStart(ListenFuncition));                   _threadListenFunciton.IsBackground= true;                   _threadListenFunciton.Start();         }         void ListenFuncition()         {                   try                   {                            _listener.Listen(10);                                                       while(true)                            {                                     _allOne.Reset();                                     _listener.BeginAccept(newAsyncCallback(AcceptCallBack),_listener);                                     _allOne.WaitOne();                            }                   }                   catch                   {}         }          /// <summary>         ///异步Accept的回调函数         /// </summary>         /// <paramname="_ar">_ar.</param>         void AcceptCallBack(IAsyncResult _ar)         {                   _allOne.Set();                    Socket _listenerSelf =(Socket)_ar.AsyncState;                   Socket _handlerEnd =_listenerSelf.EndAccept(_ar);                            /// <summary>                   ///用于向客户端发送消息的Socket,全部放入泛型列表中                   /// </summary>                   _clientList.Add(_handlerEnd);                    StateObject _state = newStateObject ();                   _state._workSocket =_handlerEnd;                    _handlerEnd.BeginReceive(_state._buffer,0,StateObject._bufferSize,0,newAsyncCallback(ReceiveCallBack),_state);          }          /// <summary>         /// 异步Receive的回调函数         /// </summary>         /// <paramname="_ar">_ar.</param>         void ReceiveCallBack(IAsyncResult _ar)         {                   StateObject _state =(StateObject )_ar.AsyncState;                    Socket _handlerEnd =_state._workSocket;                    int _receiveLength =_handlerEnd.EndReceive(_ar);                    if(_receiveLength >0 )                   {                             string _receiveData= Encoding.ASCII.GetString(_state._buffer,0,_receiveLength);                            ReceiveData(_receiveData);                             ///<summary>                            ///字符串拼接                            ///</summary>                            _state._sb.Append(Encoding.ASCII.GetString(_state._buffer,0,_receiveLength));                            string _ReceiveData= _state._sb.ToString();                            ReceiveData(_ReceiveData);                             _handlerEnd.BeginReceive(_state._buffer,0,StateObject._bufferSize,0,newAsyncCallback(ReceiveCallBack),_state);                   }         }          /// <summary>         ///向客户端发送消息         /// </summary>         void SendMessage( Socket_handlerEnd,string _value)         {                   byte[] _sendData =Encoding.ASCII.GetBytes(_value);                    _handlerEnd.BeginSend(_sendData,0,_sendData.Length,0,newAsyncCallback(SendCallBack),_handlerEnd);         }          /// <summary>         /// 异步Send的回调函数         /// </summary>         void SendCallBack(IAsyncResult _ar)         {                   Socket _handlerEnd =(Socket)_ar.AsyncState;                    int _sendLength =  _handlerEnd.EndSend(_ar);                    ///<summary>                   ///当通讯结束时，Shutdown()禁止该套接字上的发送和接收,Close()关闭套接字并释放资源                   ///</summary>                   //_handlerEnd.Shutdown(SocketShutdown.Both);                   //_handlerEnd.Close();                   Debug.Log("发送"+_sendLength+"个字节");         }          public string  ReceiveData(string _data)         {                   Debug.Log(_data);                   return _data;         }         public void SendData(string _data)         {                   Debug.Log(_data);                   //向每个客户端发送数据                   foreach(Socket _client in_clientList)                   {                            SendMessage(_client,_data);                             //客户端IP和Port信息                            EndPointtempRemoteEP = _client.RemoteEndPoint;                            IPEndPointtempRemoteIP = ( IPEndPoint )tempRemoteEP ;                                                       stringrempip=tempRemoteIP.Address.ToString();                            stringremoport=tempRemoteIP.Port.ToString();                            Debug.Log(rempip+":"+remoport);                   }            }}

 

调用代码如下：

usingUnityEngine;usingSystem.Collections; publicclass TcpServeTest : MonoBehaviour {          // Use this for initialization         void Start ()         {                   TcpSever.GetInsigle();          }                 // Update is called once per frame         void Update ()         {                   if(Input.GetMouseButtonDown(0))                   {                            TcpSever.GetInsigle().SendData("ddd");                   }                 }}