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07.26.2008 at 06:13AM PDT, ID: 23597636
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8.0

The remote server returned an error: (401) Unauthorized.

Asked by priya-dls in Microsoft IIS Web Server, Active Server Pages (ASP), Network Software Firewalls

Tags:

We are testing this code from an XP system remoting to a 2003 server with a static IP.
 Here, DLSServer is an interface mechanism which has the CServer class which in turn contains the CallFunc() function which in turn calls the getval()  from an Interop COM service.
The below code has been tested on the localhost and found to be alright.  But on a remote host this code returns an error.

When windows firewall is on with "Dont allow exceptions"  the following was returned.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<TITLE>ERROR: The requested URL could not be retrieved</TITLE>
<STYLE type="text/css"><!--BODY{background-color:#ffffff;font-family:verdana,sans-serif}PRE{font-family:sans-serif}--></STYLE>
</HEAD><BODY>
<H1>ERROR</H1>
<H2>The requested URL could not be retrieved</H2>
<HR noshade size="1px">
<P>
While trying to retrieve the URL:
<A HREF="http://122.166.3.204//dlsonline//dlsserver.soap">http://122.166.3.204//dlsonline//dlsserver.soap</A>
<P>
The following error was encountered:
<UL>
<LI>
<STRONG>
Connection to 122.166.3.204 Failed
</STRONG>
</UL>

<P>
The system returned:
<PRE><I>    (110) Connection timed out</I></PRE>

<P>
The remote host or network may be down.  Please try the request again.
<P>Your cache administrator is <A HREF="mailto:root">root</A>.

<BR clear="all">
<HR noshade size="1px">
<ADDRESS>
Generated Sat, 26 Jul 2008 11:21:36 GMT by blr.cc (squid/2.6.STABLE17)
</ADDRESS>
</BODY></HTML>

When Firewall is off  we got the following error :

The remote server returned an error: (401) Unauthorized.

Stack trace :

"\r\nServer stack trace: \r\n   at System.Runtime.Remoting.Channels.Http.HttpClientTransportSink.ProcessResponseException(WebException webException, HttpWebResponse& response)\r\n   at System.Runtime.Remoting.Channels.Http.HttpClientTransportSink.ProcessMessage(IMessage msg, ITransportHeaders requestHeaders, Stream requestStream, ITransportHeaders& responseHeaders, Stream& responseStream)\r\n   at System.Runtime.Remoting.Channels.SoapClientFormatterSink.SyncProcessMessage(IMessage msg)\r\n\r\nException rethrown at [0]: \r\n   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)\r\n   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)\r\n   at DLSServer.CServer.CallFunc(Int32 source, String mf, String mp1, String mp2, String mp3, String mp4)\r\n   at _Default.Button1_Click(Object sender, EventArgs e) in d:\\rnd\\wrk\\test\\Default.aspx.cs:line 35\r\n   at System.Web.UI.WebControls.Button.OnClick(EventArgs e)\r\n   at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)\r\n   at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)\r\n   at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)\r\n   at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)\r\n   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)"

Kindly assist us with regard to the above,
Thanks a lot in advance
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using System;
using System.IO;
using System.Net;
using System.Text;
using System.Data;
using System.Runtime.Remoting;
using DLSServer;
 
..
RemotingConfiguration.CustomErrorsMode = CustomErrorsModes.Off;
CServer mobj = new CServer();
string mstrip = "http://" + "122.166.3.204" + "//dlsonline//dlsserver.soap";   
string mpath = "d:\\test\\";    // path on the remote server
mobj = (CServer)Activator.GetObject(typeof(CServer), mstrip);
 
 
// the below line generates the error
string mrfile = mobj.CallFunc(1, "getval", mpath, mpath, mpath, mpath);
 
..
 
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[+][-]07.26.2008 at 12:58PM PDT, ID: 22096052

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[+][-]07.26.2008 at 01:00PM PDT, ID: 22096057

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About this solution

Zones: Microsoft IIS Web Server, Active Server Pages (ASP), Network Software Firewalls
Tags: The remote server returned an error: (401) Unauthorized.
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Solution Provided By: dave4dl
Participating Experts: 1
Solution Grade: A
 
 
 
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