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Systinet Polishes WASP With SOAP 1.2


By Edward J. Correia
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August 15, 2003 —  (Page 1 of 2)
C++ framework improves message handling, adds ability to build asynchronous services

If claims by Systinet Corp. to be first to market with an implementation of a SOAP 1.2-compliant Web services framework are true, they ought to be-the company wrote the spec's reference implementation. Systinet in mid-July released WASP Server for C++, an updated version of its C++ Web services framework that centers around the latest enhancements to the Simple Object Access Protocol specifications.

Released by the W3C as proposed recommendations in May, SOAP 1.2 includes a messaging framework that Charlie Ungashick, senior director of product marketing at Systinet, said gives applications built using WASP 4.6 the ability to handle more complex error codes and faults within SOAP messages.

"In SOAP 1.1, developers were limited to simple strings. Now you can have a structured fault message in XML, so you can have much richer information about the nature of the fault, perhaps even the area of code that caused the fault. Now, applications and developers can compensate for problems more gracefully than they could before."

The specification also allows for tighter mapping between HTTP result codes and SOAP error handling, which Ungashick said lets developers leverage what's already in the HTTP spec to reduce code that would otherwise be devoted to error trapping.

Another major enhancement in WASP 4.6, according to Ungashick, is the ability to develop asynchronous Web services, which permit a service or remote procedure call to be invoked and to respond immediately with an acknowledgment, even if the requested task is incomplete.

"That's interesting because if you've got something that takes a long time to compute or that involves a human being, [asynchronous communication] allows for applications that need guaranteed results from the destination," Ungashick said, even if that result is an instruction to wait for further results. He claimed that the feature also supports multiple transport methods. "I can invoke a Web service over HTTP and get the result back over SMTP."



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