The error reporting even provides standardized codes so that it’s possible to automate some error handling tasks in your code.Īn interesting SOAP feature is that you don’t necessarily have to use it with the HyperText Transfer Protocol (HTTP) transport. Given that you might not own the Web service, this particular feature is extremely important otherwise you would be left guessing as to why things didn’t work. If there’s a problem with your request, the response contains error information that you can use to fix the problem. One of the most important SOAP features is built-in error handling. So, the difficulty of using SOAP depends to a large degree on the language you use. It provides a definition of how the web service works, so that when you create a reference to it, the IDE can completely automate the process. This is another file that’s associated with SOAP. Part of the magic is the Web Services Description Language (WSDL). NET languages, you never even see the XML. However, other languages can use shortcuts that SOAP provides that can help you reduce the effort required to create the request and to parse the response. In some programming languages, you need to build those requests manually, which becomes problematic because SOAP is intolerant of errors. The XML used to make requests and receive responses in SOAP can become extremely complex. For example, when using a public Web service that’s freely available to everyone, you really don’t have much need for WS-Security. The point is that SOAP is highly extensible, but you only use the pieces you need for a particular task. In fact, you can find a whole laundry list of these standards on Web Services Standards. SOAP is designed to support expansion, so it has all sorts of other acronyms and abbreviations associated with it, such as WS-Addressing, WS-Policy, WS-Security, WS-Federation, WS-ReliableMessaging, WS-Coordination, WS-AtomicTransaction, and WS-RemotePortlets. These technologies fail because they rely on binary messaging the XML messaging that SOAP employs works better over the Internet.Īfter an initial release, Microsoft submitted SOAP to the Internet Engineering Task Force (IETF) where it was standardized. Microsoft originally developed SOAP to take the place of older technologies that don’t work well on the Internet such as the Distributed Component Object Model (DCOM) and Common Object Request Broker Architecture (CORBA). SOAP relies exclusively on XML to provide messaging services. Both SOAP and REST rely on well-established rules that everyone has agreed to abide by in the interest of exchanging information. REST as an architecture style does not require processing and is naturally more flexible. The rules in SOAP are important because, without these rules, you can’t achieve any level of standardization. Both techniques have issues to consider when deciding which protocol to use.īefore I go any further, it’s important to clarify that while both SOAP and REST share similarities over the HTTP protocol, SOAP is a more rigid set of messaging patterns than REST. However, sometimes SOAP is actually easier to use sometimes REST has problems of its own. It seeks to fix the problems with SOAP and provide a truly simple method of accessing Web services. Originally developed by Microsoft, SOAP really isn’t as simple as the acronym would suggest. SOAP is a standards-based web services access protocol that has been around for a while and enjoys all of the benefits of long-term use. The choice initially may seem easy, but at times it can be surprisingly difficult. Simple Object Access Protocol (SOAP) and Representational State Transfer (REST) are two answers to the same question: how to access web services.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |