Re: Problem When Calling Web Method Of Web Service From Pocket PC 2003.
From: Alex Feinman [MVP] (public_news_at_alexfeinman.com)
Date: 12/15/04
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Date: Tue, 14 Dec 2004 21:01:47 -0800
That's good to know. I've heard about it but never tried it myself
-- Alex Feinman --- Visit http://www.opennetcf.org "Stephany Young" <noone@localhost> wrote in message news:OG6ZVfl4EHA.1204@TK2MSFTNGP10.phx.gbl... > Thank you again Alex. > > I tried another search at MS using a keyword combination I hadn't tried > before and located a document that definitely states, as you say, that > NTLM Authentication is not supported in the CF. However another document > states that Digest Authentication is supported. > > Now that I have changed the Web site and Web Service to use Digest > Authentication, both the desktop and Pocket PC 2003 apps work quite > happily both across the LAN and over the internet. > > > "Alex Feinman [MVP]" <public_news@alexfeinman.com> wrote in message > news:umbiv9k4EHA.2316@TK2MSFTNGP15.phx.gbl... >> AFAIK it is CF limitation - it does not support NTLM authentication. The >> official workaround for your concern regarding opent text password >> transmission is to use SSL >> >> -- >> Alex Feinman >> --- >> Visit http://www.opennetcf.org >> "Stephany Young" <noone@localhost> wrote in message >> news:%23%23jm%23Wk4EHA.2452@TK2MSFTNGP14.phx.gbl... >>> Thank you Alex for taking the time to read my epistle and respond. >>> >>> Where I had erred earlier was in not supplying the domain to the >>> credential when attempting to use Basic Authentication. >>> >>> Both forms: >>> New NetworkCredential(<user>, <password>, <domain>) >>> and >>> New NetworkCredential(<user>@<domain>, <password>) >>> work quite happily with Basic. >>> >>> Do you know if this behaviour, (not being able to use Integrated), in >>> the CF is by design or a 'bug'? >>> >>> I assume that is is a CF thing rather that a CE thing because PocketIE >>> can do it OK, obviously using some other mechanism. >>> >>> Although the risk of interception is probably relatively low, I have to >>> deal with people who, not unreasonably, will probably baulk at using >>> Basic because the password is sent in clear text. >>> >>> If this behaviour, (not being able to use Integrated), in the CF is by >>> design then I will probably look at using Anonymous and passing a >>> 'roll-your-own' encrypted value as an input parameter to each web method >>> and have the method determine if the caller is allowed or not. >>> >>> >>> "Alex Feinman [MVP]" <public_news@alexfeinman.com> wrote in message >>> news:%23fx8Grj4EHA.2876@TK2MSFTNGP12.phx.gbl... >>>> The CF application will be able to support basic authentication only. >>>> As for your scenario, do you use a domain or a local account? >>>> In both cases try constructing your NetworkCredential using this form: >>>> New NetworkCredential(<user>, <password>, <domain>) >>>> >>>> In case of a local computer account, use the computer name in place of >>>> <domain> >>>> >>>> -- >>>> Alex Feinman >>>> --- >>>> Visit http://www.opennetcf.org >>>> "Stephany Young" <noone@localhost> wrote in message >>>> news:ucWXrVi4EHA.3092@TK2MSFTNGP10.phx.gbl... >>>>> When the Web site and Web Service application are set to allow >>>>> Anonymous access, the following code works perfectly when used in both >>>>> a Desktop application and a Pocket PC 2003 application. >>>>> >>>>> Imports System.Net >>>>> Imports <web reference> >>>>> >>>>> Private Sub CallHelloWorld() >>>>> >>>>> Label1.Text = String.Empty >>>>> >>>>> Label1.Update() >>>>> >>>>> Dim _ws As <web service> = New <web service> >>>>> >>>>> Label1.Text = _ws.HelloWorld() >>>>> >>>>> End Sub >>>>> >>>>> >>>>> When the Web site and Web Service application are set to allow only >>>>> Windows Authentication, the following code works perfectly when used >>>>> in a Desktop application but fails with a 401 (Unathorized) error when >>>>> used in a Pocket PC 2003 application. >>>>> The same behaviour occurs if the Web site is set to allow Anonymous >>>>> access and the Web Service application is set to allow only Windows >>>>> Authentication. >>>>> >>>>> Imports System.Net >>>>> Imports <web reference> >>>>> >>>>> Private Sub CallHelloWorld() >>>>> >>>>> Label1.Text = String.Empty >>>>> >>>>> Label1.Update() >>>>> >>>>> Dim _ws As <web service> = New <web service> >>>>> >>>>> Dim _nwc As NetworkCredential = New NetworkCredential("<user >>>>> name>@<domain name>", "<password>") >>>>> >>>>> _ws.Credentials = _cred >>>>> >>>>> _ws.PreAuthenticate = True >>>>> >>>>> Label1.Text = _ws.HelloWorld() >>>>> >>>>> End Sub >>>>> >>>>> >>>>> When the Web site and Web Service application are set to allow only >>>>> Basic Authentication, the following code works perfectly when used in >>>>> a Desktop application but fails with a 401 (Unathorized) error when >>>>> used in a Pocket PC 2003 application. >>>>> The same behaviour occurs if the Web site is set to allow Anonymous >>>>> access and the Web Service application is set to allow only Basic >>>>> Authentication. >>>>> >>>>> Imports System.Net >>>>> Imports <web reference> >>>>> >>>>> Private Sub CallHelloWorld() >>>>> >>>>> Label1.Text = String.Empty >>>>> >>>>> Label1.Update() >>>>> >>>>> Dim _ws As <web service> = New <web service> >>>>> >>>>> Dim _nwc As NetworkCredential = New NetworkCredential("<user >>>>> name>", "<password>") >>>>> >>>>> _ws.Credentials = _cred >>>>> >>>>> _ws.PreAuthenticate = True >>>>> >>>>> Label1.Text = _ws.HelloWorld() >>>>> >>>>> End Sub >>>>> >>>>> In the latter two examples, the behaviour is the same if the >>>>> '_ws.PreAuthenticate = True' line is removed. >>>>> >>>>> In all examples, the behaviour is the same regardless of whether the >>>>> Web Service is accessed from the Internet or the LAN. >>>>> No proxy servers are involved. >>>>> >>>>> To confuse the whole issue, accessing the Web service and Web method >>>>> work perfectly from PocketIE on the Pocket PC both from the LAN and >>>>> from the Internet. >>>>> >>>>> I suspect that the use of the NetworkCredential class might be >>>>> deprecated in the CompactFramework or that there might be, (god >>>>> forbid), a 'bug' in the CompactFramework with the effect being that >>>>> the details from the NetWorkCredential object are not passed correctly >>>>> in the call to the Web method. >>>>> >>>>> The Web Server is IIS 6.0 running on Windows Server 2003. >>>>> The Pocket PC has SP2 of the Compact Framework applied. >>>>> >>>>> Can anyone definitely confirm that this is the case, and, if so, has >>>>> anyone come up with a reliable workaround? >>>>> >>>>> >>>> >>>> >>> >>> >> >> > >
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