How to call a .NET web service from PERL

bears22 has asked for the wisdom of the Perl Monks concerning the following question:

Does anyone know how to call a .NET web service from PERL? I created a very basic .NET web service locally on my machine. The web service accepts a parameter and perfoms a conversion on the input value. I need to use a PERL script to call this web service and then have the web service return back to the PERL script the result. I know so far that I have to use SOAP::Lite, but I am not sure how to use it? I have read the soaplite.com website for information, but somewhat confusing to me as I am new to PERL.

Any help would be greatly appreciated or a code snippet to try. This is what I have tried so far below, but the only thing that happens is I get the message on the last line printed out to my command window:

use SOAP::Lite;
print SOAP::Lite
    -> uri('http://localhost/WebService1/Service1.asmx')
    -> proxy('http://localhost/WebService1/Service1.asmx')
    -> ConvertTemperature(0)
    -> result;

print "test for soap call using SOAP::Lite";
[download]

The web service I have contains one exposed webmethod, ConvertTemperature, and it excepts a value and returns a result. Again, I am running this locally on my own machine. Thanks,

Comment on How to call a .NET web service from PERL Download Code

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Re: How to call a .NET web service from PERL by runrig (Abbot) on Jan 14, 2005 at 21:57 UTC
IIRC, you have to jump through some hoops to get a perl SOAP::Lite client to talk to a .NET service (I don't have any direct experience, just a vague recollection from reading). It was covered in O'Reilly's (Programming Web Services with) SOAP book. Oh look, I think it's in chapter 3 of the book (under "Interoperability Issues"). I have no idea how up to date this info is, so YMMV.	[reply]
Re: How to call a .NET web service from PERL by bpphillips (Friar) on Jan 17, 2005 at 13:26 UTC
In addition to some of the comments above, you might find this MSDN article helpful. It is titled "How to Call a .NET-based Web Service Using the SOAP::Lite Perl Library" and was helpful when I was recently doing the same thing you're trying to do.	[reply]
Re: How to call a .NET web service from PERL by hardburn (Abbot) on Jan 14, 2005 at 21:43 UTC
The code here looks right. Are you sure the web service itself is working correctly? "There is no shame in being self-taught, only in not trying to learn in the first place." -- Atrus, Myst: The Book of D'ni.	[reply]
Re^2: How to call a .NET web service from PERL by bears22 (Initiate) on Jan 14, 2005 at 21:49 UTC
Here is my .NET Web service code: `[WebMethod] public double ConvertTemperature(double dFahrenheit) { return ((dFahrenheit - 32) * 5) / 9; }` [download] I am using the standard example of Hello World from Visual Studio.NET and I added one more function. I can test this web service locally on my own machine by going directly to the URL (http://localhost/WebService1/Service1.asmx) and I get a web page to load asking me for input and providing a button to invoke. Is it my machine and the setup?	[reply] [d/l]
Re: How to call a .NET web service from PERL by gellyfish (Monsignor) on Jan 17, 2005 at 11:38 UTC
There are two things that you need to check in order to ensure interoperability with a .NET Web Service: firstly you need to provide the correct value for the `uri` method - this is used as the namespace for the XML payload of the SOAP request. If the namespace is not being explicitly being set in the `[WebService]` attribute in your c# code then this will have the value of `http://tempuri.org/`. Secondly you need to be sending the form of `SOAPAction` header that the .NET web service is expecting. You can generally achieve this by adding: `->on_action( sub { join "", @_ } )` [download] after the `proxy()` line. /J\	[reply] [d/l] [select]