3.2.4.2 Application Making Method Call

When a higher-layer protocol or application performs a method call on the proxy object, the COMQC client MUST attempt to create a new entry in the list of pending calls and store the data describing the call and fail the call if it cannot. The relevant data are the method parameters and the security context as defined in [MS-COM] section 2.2.3.2.

Alternatively, an implementation MAY immediately convert the method call into a message conforming to the format defined in section 2.2 and send it to the message queue without storing any internal state. (Such an implementation would not implement application signaling as defined in section 3.2.4.3.)