从URL读取XML有奇怪的问题

我的代码:

        string url = @"http://eafsys:1234/vp.xml";
        try
        {
            XmlTextReader reader = new XmlTextReader(url);
            while (reader.Read())
            {
                // do whatever..
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }

当我运行它时，我捕获了以下错误:

'服务器违反了协议。节= ResponseStatusLine '

我搜索了互联网，显然我应该改变一些网页。我的IIS配置文件。问题是XML数据来源的系统没有IIS，它甚至没有web服务器。它只是一个程序在该端口上监听，等待输出XML。

我可以冲浪(使用任何浏览器，即FireFox)到http://eafsys:1234/vp.xml，并得到格式良好的XML。

下面是XML的原始(源视图):

<?xml version="1.0" encoding="ISO-8859-1" ?>
<EAFSTATUS>
<EAST>
<HEAT_NO>100633</HEAT_NO>
<GRADE>EA174  </GRADE>
<HEATSTATUS>MELT</HEATSTATUS>
<CHARGENUM>2</CHARGENUM>
<CRMTEMP>1657</CRMTEMP>
<CRMC> 0.0519</CRMC>
<CHARGE>178000</CHARGE>
<ENERGY>80710</ENERGY>
<ELECTKWH>46400</ELECTKWH>
<POWERONTIME> 33:18</POWERONTIME>
<POWERSTATUS>OFF</POWERSTATUS>
<DELAYDUR>3:18</DELAYDUR>
<DELAYSTATUS>OPEN </DELAYSTATUS>
<DELAYREASON>          NO REASON </DELAYREASON>
</EAST>
<WEST>
<HEAT_NO>100632</HEAT_NO>
<GRADE>EA174  </GRADE>
<HEATSTATUS>REF </HEATSTATUS>
<CHARGENUM>2</CHARGENUM>
<CRMTEMP>1529</CRMTEMP>
<CRMC> 0.0418</CRMC>
<CHARGE>178500</CHARGE>
<ENERGY>95010</ENERGY>
<ELECTKWH>54500</ELECTKWH>
<POWERONTIME> 39:06</POWERONTIME>
<POWERSTATUS>OFF</POWERSTATUS>
<DELAYDUR></DELAYDUR>
<DELAYSTATUS></DELAYSTATUS>
<DELAYREASON></DELAYREASON>
</WEST>
<LMF_EAST>
<HEAT_NO>100631</HEAT_NO>
<GRADE>EA719  </GRADE>
<HEATSTATUS>DONE</HEATSTATUS>
<LMF_TIME> 58:48</LMF_TIME>
<TEMP>1546</TEMP>
<WT>163100</WT>
<SAMP>M03</SAMP>
<SAMP_S>0.005760</SAMP_S>
<CAO>0</CAO>
<AL2O3>0</AL2O3>
</LMF_EAST>
<LMF_WEST>
<HEAT_NO>100632</HEAT_NO>
<GRADE>EA174  </GRADE>
<HEATSTATUS>REF </HEATSTATUS>
<LMF_TIME> 47:42</LMF_TIME>
<TEMP>1566</TEMP>
<WT>167500</WT>
<SAMP>M02</SAMP>
<SAMP_S>0.000000</SAMP_S>
<CAO>0</CAO>
<AL2O3>0</AL2O3>
</LMF_WEST>
<CASTER>
<HEATNUM>100631</HEATNUM>
<OUTBOARDHEATNUM>0</OUTBOARDHEATNUM>
<CASTSPEED>1.295000</CASTSPEED>
<CASTWIDTH>1.365312</CASTWIDTH>
<REMAININGWEIGHT>66714</REMAININGWEIGHT>
<NEXTTIME>15:20:13.00</NEXTTIME>
<HEATDUR>55</HEATDUR><LADLESINSERVICE>4</LADLESINSERVICE></CASTER>
</EAFSTATUS>

如果有人有什么想法，我很乐意听听。