尝试通过重新打开的套接字发送时出现 ObjectDisposeException

发布于 2024-10-12 05:51:53 字数 1382 浏览 4 评论 0原文

  1. 我使用 Socket (Socket A = new Socket...) 来发送/接收。
  2. 当发生某些事情(断开连接)时,我尝试关闭/处置旧对象,然后实例化一个新套接字(A = new Socket...)(同一主机/端口
  3. ) >connect() 阶段检查正常,远程主机看到连接。
  4. 在尝试发送第一个字节时,我立即得到:

System.ObjectDisposeException:无法访问已处置的对象。 对象名称:“System.Net.Sockets.Socket”。 在 System.Net.Sockets.Socket.Send(Byte[] 缓冲区、Int32 偏移量、Int32 大小、SocketFlags socketFlags、SocketError& errorCode) 在 System.Net.Sockets.Socket.Send(Byte[] 缓冲区,Int32 偏移量,Int32 大小,SocketFlags socketFlags) 在 System.Net.Sockets.Socket.Send(Byte[] 缓冲区)

有什么想法吗?

try
{
   CCMSocket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
   CCMSocket.Connect(CCMServer, CCMPort);
}

现在,在使用套接字时,catch 子句捕获 SocketException,并调用 reconnect 方法:

try
{
    //Verify the the socket is actually disconnected
    byte[] Empty = new byte[0];
    CCMSocket.Send(Empty);
}
catch (Exception ex)
{
    bool connected = false;
    int reconnectCounter = 0;
    do
    {
        reconnectCounter++;
        Disconnect(); //<-- Just CCMSocket.Disconnect(true) in a try/catch
        if (Connect(CCMServer, CCMPort)) // <-- method given above
        {
            connected = true;
            CCMSocket.Send(LoginData); // this fails
        }
    } while (!connected);    
}
  1. I'm using Socket (Socket A = new Socket...) to send/receive.
  2. when something bed happens (disconnection), I'm trying to close/dispose old object, and then instancing a new socket (A = new Socket...) (same host/port)
  3. The connect() phase checks out fine, the remote host sees the connection.
  4. Upon trying to send the very first byte, I immediately get:

System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'System.Net.Sockets.Socket'.
at System.Net.Sockets.Socket.Send(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, SocketError& errorCode)
at System.Net.Sockets.Socket.Send(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
at System.Net.Sockets.Socket.Send(Byte[] buffer)

Any Ideas?

try
{
   CCMSocket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
   CCMSocket.Connect(CCMServer, CCMPort);
}

Now, when working with the socket, the catch clause catches SocketException, and calls the reconnect method:

try
{
    //Verify the the socket is actually disconnected
    byte[] Empty = new byte[0];
    CCMSocket.Send(Empty);
}
catch (Exception ex)
{
    bool connected = false;
    int reconnectCounter = 0;
    do
    {
        reconnectCounter++;
        Disconnect(); //<-- Just CCMSocket.Disconnect(true) in a try/catch
        if (Connect(CCMServer, CCMPort)) // <-- method given above
        {
            connected = true;
            CCMSocket.Send(LoginData); // this fails
        }
    } while (!connected);    
}

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把昨日还给我 2024-10-19 05:51:54

让您的 Connect 方法创建一个套接字并返回该套接字以发送数据。
更像是:

try
{
   CCMSocket = new Socket();
   CCMSocket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
   CCMSocket.Connect(CCMServer, CCMPort);
   return CCMSocket
}

do
{
    reconnectCounter++;
    Disconnect(); //<-- Just CCMSocket.Disconnect(true) in a try/catch
    var newSocket = Connect(CCMServer, CCMPort); // <-- method given above
    if (newSocket != null) 
    {
        connected = true;
        newSocket.Send(LoginData); // should work
        CCMSocket = newSocket; // To make sure existing references work
    }
} while (!connected);

您使用异步套接字模式时构建服务器应用程序。

Have your Connect method create a new socket and return that socket to send data.
Something more like:

try
{
   CCMSocket = new Socket();
   CCMSocket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
   CCMSocket.Connect(CCMServer, CCMPort);
   return CCMSocket
}

and

do
{
    reconnectCounter++;
    Disconnect(); //<-- Just CCMSocket.Disconnect(true) in a try/catch
    var newSocket = Connect(CCMServer, CCMPort); // <-- method given above
    if (newSocket != null) 
    {
        connected = true;
        newSocket.Send(LoginData); // should work
        CCMSocket = newSocket; // To make sure existing references work
    }
} while (!connected);

You should also seriously consider the asynchronous socket pattern when building server applications.

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