如果我还有这样的接收消息的代码呢？ var proxSocket=socket as Socket; byte[]data=new byte[1024*1024]; while (true) { int len = 0; try { len = proxSocket.Receive(data, 0, data.Length, SocketFlags.None); } catch { AppendTextToTxtLog(string.Format("服务器端：{0}非正常退出",proxSocket.RemoteEndPoint.ToString())); StopConnect(); return; } if (len <= 0) { AppendTextToTxtLog(string.Format("服务器端：{0}正常退出", proxSocket.RemoteEndPoint.ToString())); StopConnect(); return; } int type = data[0]; if (type == 1) { string str=Encoding.Default.GetString(data,1,len-1); AppendTextToTxtLog(string.Format("接收到服务器端：{0}的消息是：{1}", proxSocket.RemoteEndPoint.ToString(), str)); }else if(type == 2) { Flash(); }else if (type == 3) { saveFile(data, len); } }

在关闭连接时，您需要停止接收数据并退出循环。可以添加一个布尔变量 `isConnected`，并在关闭连接时将其设置为 `false`。然后在循环中，检查此变量的值，如果为 `false`，则退出循环。以下是修改后的代码示例：

var proxSocket = socket as Socket;
byte[] data = new byte[1024 * 1024];
bool isConnected = true;  // 添加 isConnected 变量

while (isConnected)  // 修改循环条件
{
    int len = 0;
    try
    {
        len = proxSocket.Receive(data, 0, data.Length, SocketFlags.None);
    }
    catch
    {
        AppendTextToTxtLog(string.Format("服务器端：{0}非正常退出", proxSocket.RemoteEndPoint.ToString()));
        StopConnect();
        return;
    }
    if (len <= 0)
    {
        AppendTextToTxtLog(string.Format("服务器端：{0}正常退出", proxSocket.RemoteEndPoint.ToString()));
        StopConnect();
        return;
    }
    int type = data[0];
    if (type == 1)
    {
        string str = Encoding.Default.GetString(data, 1, len - 1);
        AppendTextToTxtLog(string.Format("接收到服务器端：{0}的消息是：{1}", proxSocket.RemoteEndPoint.ToString(), str));
    }
    else if (type == 2)
    {
        Flash();
    }
    else if (type == 3)
    {
        saveFile(data, len);
    }
}

在关闭连接时，将 `isConnected` 设置为 `false`：

isConnected = false;
ClientSocket.Shutdown(SocketShutdown.Both);
ClientSocket.Close();