Microsoft Technology Licensing, LLC

Paul M Oeuvray

Alexander Sasha Stojanovic

Mohsen M Al-Ghosein

Shankar Pal

Thulusalamatom Krishnamurthi Anand

Gunnar Mein

Govinda Dhondu

Steve Jamieson

Keith S Hamilton

Joe Dennis Long

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.

Simple object access protocol

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 &lsqb;in&rsqb;, &lsqb;out&rsqb;, &lsqb;in, out&rsqb; 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 &lsqb;out&rsqb; 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.

A method, apparatus, and article of manufacture for providing a component-based computing system having programmable components and component aliases for identifying computing components for providing component addressing/identification and naming spaces is disclosed. The computing system has a partition activation control module for receiving a request to activate a component initiated by a calling component and activating an instance of the requested component, a permit object activation module for determining whether an instance of the requested component may be activated, a component object alias activation module for substituting a unique component class ID for a component alias class ID if the requested component corresponds to a component object alias, a system component catalog database for maintaining component object configuration data, and a component object activation module for activating the requested component. The method determines the identity of the requested processing component, including an identity of a unique component class ID and an identity of a partition from a request to activate a component initiated by a calling component and obtains configuration data for the requested component, the configuration data comprises one or more component parameters for the requested component. If the configuration data indicates that the requested component is a component object alias, the method substitutes a unique component class ID for the component alias class ID and activates an instance of the requested component.

Component aliasing operating within a component-based computing system

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Paul M Oeuvray