Question

Webservice & SOAP initialization through authentication proxy

Asked by: nonubik

Following the question http:Q_21227725.html, I have another question about this straaaaaange MSSOAP.

I'm using MSSOAP Toolkit 2.0. What I discovered is that mssoapinit or raw_mssoapinit method uses the IE proxy settings to init from a remote wsdl file.

hr = pSoap->raw_mssoapinit(bstrWSDL, L"", L"", L"");

This works fine for a non-authenticated web proxy. In order to Invoke webservice functions, I'll also have to set some proxy related connector properties after that call:

VARIANT      var1;

var1.vt = VT_BSTR;
var1.bstrVal = bstrProxyServer;
hr = pSoap->put_ConnectorProperty(L"ProxyServer", var1);

and so on for "ProxyPort", "ProxyUser" and "ProxyPassword".
Well, the thing that does not work is the mssoapinit method in case I have to go through an authenticated web proxy. With some 'Access denied' error, since the user/pass for web proxy were not supplied.

What do I have to do in order to work?

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2004-12-23 at 06:58:04ID21252401
Tags

proxy

,

soap

Topics

.NET

,

Web Services and WCF

Participating Experts
2
Points
0
Comments
9

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. webservers.
    Hi are there any free webservers on net that allows you to use Global.asa ? ewebcity does not allow to use global.asa. Don't post a link unless i can register now.
  2. Is Apache is webserver?.
    Hi Is Apache is webserver?. then what is the diiference between Appache webserver and Tomcat?. is it must to install Apache for tomcat?. thanks
  3. Urgent: SOAP ERROR
    We have an application running on asp3.0 and oracle8.1.We created 4 com components (in VB)and converted them into dll's. We call the dll's from the web application.These dlls's call a webservice on a remoteserver. These dll's make use of SOAP TOOLKIT 3.0 WHICH IS INSTALLED ON...
  4. SOAP envelope version mismatch
    I am connecting a Java webserver, using .net c# SOAP, I received this error when I try to connect. Possible SOAP version mismatch: Envelope namespace http://schemas.xmlsoap.org/wsdl/ was unexpected. Expecting http://schemas.xmlsoap.org/soap/envelope/.

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: drichardsPosted on 2004-12-24 at 05:46:17ID: 12899092

Here's how Microsoft says to do it.  Looks like there are additional properties "ProxyUser" and "ProxyPassword" that you can set.  Notice the caveats at the end as well.

------------------------------------------------

Proxy Authentication
A proxy server may require you to authenticate yourself before the connection goes through. For example, it may be used to restrict use of the Internet from within a corporate intranet. Proxy servers may use all authentication schemes discussed above. Microsoft SOAP Toolkit 2.0 allows you to specify a user name and password for proxy authentication:

set SoapClient = createobject("MSSoap.SoapClient")
SoapClient.ConnectorProperty("UseProxy") = true
SoapClient.mssoapinit("http://services.xmethods.net/soap/urn:xmethods-
   CurrencyExchange.wsdl")
SoapClient.ConnectorProperty("ProxyServer") = "secureproxy"
SoapClient.ConnectorProperty("ProxyPort") = 80
SoapClient.ConnectorProperty("ProxyUser") = "username"
SoapClient.ConnectorProperty("ProxyPassword") = "password"
Quote = SoapClient.GetQuote()

If your Proxy requires NTLM authentication, you may omit user name and password, causing it to use the current logon credentials. If you need to specify a domain name for proxy NTLM authentication, add "DOMAIN\username" as for server authentication.

Limitations. Microsoft SOAP Toolkit 2.0 does not support connection to a server that requires authentication through a proxy that also requires authentication. Additionally, SSL connections through a proxy that requires authentication will not work on Windows 2000 and Windows NT 4.0.

 

by: nonubikPosted on 2004-12-27 at 03:52:41ID: 12906225

Microsoft way to do it does not work all the time. Tested, and their documentation has many flaws.

Let's get you example:

>set SoapClient = createobject("MSSoap.SoapClient")
>SoapClient.ConnectorProperty("UseProxy") = true
>SoapClient.mssoapinit("http://services.xmethods.net/soap/urn:xmethods-
   CurrencyExchange.wsdl")

If you'll try it (at least in C++) you'll not be able to set any connector property prior to soapclient initialization (i.e. mssoapinit call). It will fail with 'object not initailized'.

But I think you did not got my problem right: I just want to call mssoapinit with a remote wsdl file as parameter. What you say is about invoking (calling) functions from the webservice afterwards. The question is HOW to make mssoapinit to get the proxy authentication params (as it uses the IE proxy settings, and the user/pass are not explictly set).

I am willing to "upgrade" to MSSOAP 3.0 (even if it requires MSXML 4.0) if that will solve my problem.

 

by: drichardsPosted on 2004-12-27 at 08:03:06ID: 12907151

Even in your example, you are setting "UseProxy" prior to calling mssoapinit.  Are you saying that you can set that property but not the ProxyUser and
ProxyPassword properties?

I'll load the Soap Toolkit and try it when I'm back at work (still Criistmas vacation for me!)

 

by: drichardsPosted on 2004-12-27 at 08:04:00ID: 12907160

Or is your problem that you can't sey ANY property prior to mssoapinit?

 

by: drichardsPosted on 2004-12-27 at 09:52:35ID: 12907768

Well, I couldn't resist - I don't have a proxy here, but I got the MSSOAP stuff and looked.  It turns out that the MS docs appear to be incorrect.  There is no connector object until after you call mssoapinit since the connector depends on the service you are calling.  The connector is created from a factory (you can provide a ProgID to a custom connector to override the factory) when you call a service according to the doc for the ConnectorProgID client property.

I don't see any way to specify/create a connector except by calling mssoapinit.  You specify the service as a parameter to mssoapinit or mssoapinit just usees the first one listed in the wsdl.  You may be forced to get a local copy of the wsdl using regular HTTP services which DO allow you to specify proxy parameters, and then you'd be able to use the SoapClient object with the local wsdl.

 

by: nonubikPosted on 2004-12-27 at 10:40:46ID: 12908013

>Or is your problem that you can't sey ANY property prior to mssoapinit?
True

>You may be forced to get a local copy of the wsdl using regular HTTP services which DO allow you to specify proxy parameters, and then you'd be able to use the SoapClient object with the local wsdl.
Unfortunately I cannot do this since the wsdl implies some security reasons.


 

by: nonubikPosted on 2005-01-07 at 03:32:22ID: 12981858

Seems I found the answer myself: the way to mssoapinit through authenticate webproxy is to enter the user/pass into the wsdl URL.

hr = pSoap->raw_mssoapinit(L"http://user:pass@www.someserver.com", L"", L"", L"");

The reason I didn't try earliear is that I was very sure that it's about the "www.someserver.com" authentication, not the proxy one.
Strangley, it works for the webproxy, even that it's not mentioned anywhere in the MSDN.

 

by: moduloPosted on 2005-01-11 at 06:46:19ID: 13014053

Closed, 500 points refunded.

modulo
Community Support Moderator
Experts Exchange

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...