Simple object access protocol

Details Simple object access protocol Simple object access protocol

2006-12-05

2006-12-05

Bullock, Jr., Lewis A. (Department: 2195)

Electrical computers and digital processing systems: interprogra

Remote procedure call

C709S236000

Reexamination Certificate

active

07146618

ABSTRACT:
An application layer protocol is provided on top of HTTP 1.0/1.1 to allow for COM Automation objects to be invoked over the Internet through IIS/ISAPI servers. The format essentially encodes the automation object's name, method to invoke, and any [in], [out], [in, out] parameters that the method signature requires, packages them up into a custom MIME type and marshals it to the ISAPI dynamic link library (DLL) on the IIS/HTTP server. There, the ISAPI DLL contains the logic to unpack the SOAP request, parses it, creates the Automation object, invokes the method with the marshaled parameters, and then returns any [out] parameters to the caller/client using the SOAP protocol. It is a stateless protocol, meaning that object lifetimes only extend to one method, and are recreated between multiple calls to the object.

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