TCP连接回调出错：远程主机强迫关闭了一个现有的连接

Question

总是出现这个问题！代码如下，帮偶看下吧  
public  void  Start()  
{  
           if  (!Active)  
           {  
                       Active  =  true;  
                       mainSocket  =  new  Socket(AddressFamily.InterNetwork,SocketType.Stream,  ProtocolType.Tcp  );  
                       IPEndPoint  ipLocalEndPoint  =  new  IPEndPoint(IPAddress.Any,8800);    
                       mainSocket.Bind(ipLocalEndPoint);  
                       mainSocket.Listen(5000);  
                       mainSocket.Soc.BeginAccept(new  AsyncCallback(AcceptCallback),mainSocket);//接收请求
            }  
}  
 
//  <summary>  
///  BeginAccept回调函数  
///  </summary>  
///  <param  name="ar">IAsyncResult实例</param>  
public  void  AcceptCallback(IAsyncResult  ar)    
{  
           try  
           {  
                       //得到客户端请求的套接字句柄  
                       Socket  listener  =  (Socket)ar.AsyncState;  
                       Socket  handler  =  listener.EndAccept(ar);  
                       int  nSoc  =  GetSocketIndex();  
                                   //开始接受来自该客户端的数据  
                       handler.BeginReceive(  state.buffer,  0,  StateObject.BufferSize,  SocketFlags.None,new  AsyncCallback(ReceiveCallback),  state);  
           }  
           catch(Exception  err)    
           {  
                       ApplicationLog.WriteError("TCP连接回调出错："  +  err.Message);  
           }  
           //继续接受客户端  
           mainSocket.BeginAccept(new  AsyncCallback(AcceptCallback),mainSocket);  
}  
一直出现“TCP连接回调出错：远程主机强迫关闭了一个现有的连接”的错误！为什么呀？

Answer 1

// Thread signal. 这个要先定义
    public static ManualResetEvent allDone = new ManualResetEvent(false);
...
public  void  Start()  
{  
           while(Active)  
           {  
                       allDone.Reset();  
                       mainSocket  =  new  Socket(AddressFamily.InterNetwork,SocketType.Stream,  ProtocolType.Tcp  );  
                       IPEndPoint  ipLocalEndPoint  =  new  IPEndPoint(IPAddress.Any,8800);    
                       mainSocket.Bind(ipLocalEndPoint);  
                       mainSocket.Listen(5000);  
                       mainSocket.Soc.BeginAccept(new  AsyncCallback(AcceptCallback),mainSocket);//接收请求
allDone.WaitOne();
            }  
}//  <summary>  
///  BeginAccept回调函数  
///  </summary>  
///  <param  name="ar">IAsyncResult实例</param>  
public  void  AcceptCallback(IAsyncResult  ar)    
{  
allDone.Set();
           try  
           {  
                       //得到客户端请求的套接字句柄  
                       Socket  listener  =  (Socket)ar.AsyncState;  
                       Socket  handler  =  listener.EndAccept(ar);  
                       int  nSoc  =  GetSocketIndex();  
                                   //开始接受来自该客户端的数据  
                       handler.BeginReceive(  state.buffer,  0,  StateObject.BufferSize,  SocketFlags.None,new  AsyncCallback(ReceiveCallback),  state);  
           }  
           catch(Exception  err)    
           {  
                       ApplicationLog.WriteError("TCP连接回调出错："  +  err.Message);  
           }  
} // 只是大概改了一点，不知道你第几句出错，不好说。