在服务器套接字C＃中处理多个客户端

Question

我想创建一个异步套接字。服务器端应按时处理客户端请求，而不应设置在队列中。我阅读了更多内容，并在下面的链接中写了类似的代码。在服务器端是正确的，我没有任何错误或问题，但是在客户端，当我想接收数据时，对于第一次接收到的数据，一切都很好，但是当第二次调用ReceiveCallback时，我得到以下错误：

 Offset and length were out of bounds for the array or count is greater than the number of elements from index to the end of the source collection.

链接是：

 https://stackoverflow.com/questions/14974404/socket-programming-multiple-client-one-server

我在ReceiveCallback方法中的代码是：

private void ReceiveCallback(IAsyncResult asyncResult)
    {
        try
        {
            StateObject state = (StateObject)asyncResult.AsyncState;
            Socket client = state.workSocket;

            int bytesRead = 0;
            if (client != null)
                bytesRead = client.EndReceive(asyncResult);

            if (bytesRead > 0)
            {
                //string content = state.sb.Append(Encoding.UTF8.GetString(state.buffer, 0, bytesRead)).ToString();
                Buffer.BlockCopy(state.buffer, 0, _imageBuff, _totBytesRead, bytesRead);
                _totBytesRead += bytesRead;
                //if (content.IndexOf(Cache.EndOfMessage, StringComparison.Ordinal) > -1)
                if (_totBytesRead < state.ImageSize)
                {
                    client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, ReceiveCallback, state);
                    //if (state.sb.Length > 1)
                    //{
                    //    _response = state.sb.ToString();
                    //}
                }
                else
                {
                    newMsgReceived(_imageBuff);
                    receiveDone.Set();
                }
            }

        }
        catch (Exception ex)
        {
            Log.CreateLog(Kit.Journal.Logger.Enums.LogType.Error, ex.Message, "ReceiveCallback in MonitoringSocket has error!");
        }
    }

该错误是我的方法中“ Blockcopy”的一部分。

我要测试我的应用程序，以便在发布之前处理计算机中的某些客户端，我编写了以下代码。我使用了线程。

 private void BtnConfirm_Click(object sender, RoutedEventArgs e)
    {
        //ImgDataGrid.Items.Clear();
        var pc = new PersianCalendar();
        var fromDate = pc.ToDateTime(_fromYear, _fromMonth, _fromDay, 0, 0, 0, 1);
        var toDate = pc.ToDateTime(_toYear, _toMonth, _toDay, 0, 0, 0, 1);

        byte[] fileNameObj = null;
        var thread = new Thread(() =>
        {
            fileNameObj = ServiceUtility.GetImageFileNames(fromDate, toDate);
            var fileNameListStrTemp = "";
            var fileNameListStr = new List<string>();
            if (fileNameObj != null && fileNameObj.Length > 0)
            {
                fileNameListStrTemp = Kit.Utility.ZipTask.Unzip(fileNameObj);
            }
            if (fileNameListStrTemp != null && !string.IsNullOrEmpty(fileNameListStrTemp))
            {
                fileNameListStr = fileNameListStrTemp.Split('|').ToList();

                FillDataGridView(fileNameListStr);
            }
            else
            {
                MessageBox.Show("");
            }
        });
        thread.Start();


        byte[] fileName = null;
        var thread1 = new Thread(() =>
        {
            fileName = ServiceUtility.GetImageFileNames(fromDate, toDate);
            var fileNameListStrTemp = "";
            var fileNameListStr = new List<string>();
            if (fileName != null && fileName.Length > 0)
            {
                fileNameListStrTemp = Kit.Utility.ZipTask.Unzip(fileName);
            }
            if (fileNameListStrTemp != null && !string.IsNullOrEmpty(fileNameListStrTemp))
            {
                fileNameListStr = fileNameListStrTemp.Split('|').ToList();

                FillDataGridView(fileNameListStr);
            }
            else
            {
                MessageBox.Show("");
            }
        });
        thread1.Start();
}

我现在很困惑。为了处理服务器端客户端的某些请求，我应该在服务器端线程化，还是可以像上面的代码那样编写？我在客户端的代码不正确或在BtnConfirm_click中测试我的代码不正确？