September 2003
Intermediate to advanced
1008 pages
26h 5m
English
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Creating a Discovery File
Once you have created a web service, there must be some way for the developers who will develop the consuming applications to find out about the methods exposed by the web service. This process is called discovery.
The description of the web service is contained in a service description document, an XML document written in a format called WSDL (Web Service Description Language). You have already seen the WSDL document for our example web service in this chapter, in Figure 16-2. There are two ways to view a WSDL document.
The first is to enter the URL of the web service
.asmx file in a browser to generate the web
service test page, as shown in several of the figures in this
chapter, including Figure 16-4 and Figure 16-12. Near the top of the test page will be a link
to a Service Description. Clicking on that link will bring up the
WSDL document.
Alternatively, enter the URL for a web service
.asmx file in a browser with
?WSDL appended to the end of the URL. For
example, entering the following URL in a browser would display the
WSDL for the web service csStickTicker.asmx:
http://localhost/ProgAspNet/csStockTicker.asmx?WSDL
To ease the chore of generating a WSDL document for the developer
creating the consuming application, you can create a
.disco file. This is an XML file located in the
same virtual directory as the .asmx file. The
developer creating the consuming application can then use the
.disco file, as will be demonstrated shortly.
Example 16-29 shows a ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.