Question

我正在为用于与MSMQ服务器进行通信的MSMQ客户端编写代码。我的发送方法将重复发送同一条消息数千次，但发送更长的消息，这是不期望的。短消息不会发生此问题。接收和发送队列都是专用队列。

可能是什么原因造成的？

我已启用MSMQ日记来监视创建了多少重复的邮件。

发送功能：

private void Send(string content, string queuePath, int timeToBeReceived)
{
    // check if queue exist
    if (sendQueue == null)
    {
        // remote private queue
        if (queuePath.Contains("FormatName"))
        {
            sendQueue = new MessageQueue(queuePath);
        }
        else
        {
            // private queue path
            if (MessageQueue.Exists(queuePath))
            {
                sendQueue = new MessageQueue(queuePath);
            }
            else
            {
                sendQueue = MessageQueue.Create(queuePath);
                // Set permissions
                sendQueue.SetPermissions("Everyone", MessageQueueAccessRights.FullControl, AccessControlEntryType.Allow);
            }
        }
    }

    // create message
    Message msg = new Message();
    msg.Formatter = new XmlMessageFormatter((new Type[] { typeof(string) }));

    try
    {
    // validation
        XmlDocument xml = new XmlDocument();
        xml.LoadXml(content);
        xml = null;

        msg.BodyStream = new MemoryStream();
        var bytes = System.Text.Encoding.UTF8.GetBytes(content);
        msg.BodyStream.Write(bytes, 0, bytes.Length);
        if (timeToBeReceived > 0)
        {
            msg.TimeToBeReceived = TimeSpan.FromMilliseconds(timeToBeReceived);
        }
        sendQueue.Send(msg);
        Array.Clear(bytes, 0, bytes.Length);
        msg.Dispose();
    }
    catch (XmlException ex) {
        MessageBox.Show(ex.Message, "Wrong XML Format Detected!", MessageBoxButton.OK, MessageBoxImage.Warning);
        return;
    }
}

从MainViewModule调用此函数时，TimeToBeReceived默认为0

private RelayCommand _sendCommand;

public RelayCommand SendCommand
{
    get
    {
        return _sendCommand
            ?? (_sendCommand = new RelayCommand(
            () =>
            {
                Send(SendText, Properties.Settings.Default.MSMQSendPath, Properties.Settings.Default.TimeToBeReceived);
                SendText = string.Empty;
            }));
    }
}

邮件正文：

<result>
<job bsn="000789364" barcode="LJS@000789364@004@IP@LPSTEST@.@.@20190610103346@1@0@.@C519 IP LHD@2.6286@755055@151xx1x1xx1611x1xxx32112111x1x21xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx@*000789364*=" jobtype="C519 EB LHD" overallresult="pass"></job>
<tester name="LHD" lane="EB Line 6" version="KSK"></tester>
    <tests performed="2019-01-09 10:31:27" cycletime="187" faultmessage="any useful text">
    <test name="JX6T91A000LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A002LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A003LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A102LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A107LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A111LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A112LBB" result="pass" value="module" status="1"></test>
    <test name="JX6T91A209LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A303LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A401LGD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A641LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A680LBD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A681LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A682LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A790LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A792LCC" result="pass" value="module" status="1"></test>
    <test name="JX6T91A793LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91A811LAD" result="pass" value="module" status="1"></test>
    <test name="JX6T91B111LEC" result="pass" value="module" status="1"></test>
    <test name="JX6T91B302LDD" result="pass" value="module" status="1"></test>
    <test name="JX6T91B830LCD" result="pass" value="module" status="1"></test>
</tests>

我仍在研究此问题，并找到了更多信息。我的代码发送了一次正确的消息，然后出现重复消息。

对于重复消息，它没有发送者用户和SID信息。源计算机的GUID和名称也不同。

正确的日记消息属性队列信息采用以下模式： DIRECT = OS：PCName \ privates $ \ queuename。

错误消息的队列格式名称为：

DIRECT = TCP：IPADDRESS \ private $ \ queuename

可能是根本原因？问题消息的大小为2102。

为什么我不希望代码向MSMQ发送相同的消息？

0 个答案: