3.2.5.2 Sending an EcDoAsyncConnectEx Method Call

The client sends the EcDoAsyncConnectEx method, as specified in [MS-OXCRPC] section 3.1.4.4, to initialize the server for asynchronous RPC notifications.

The client SHOULD determine whether the server supports the EcDoAsyncConnectEx method by examining the server version information that is returned from the EcDoConnectEx method call, as specified in [MS-OXCRPC] section 3.1.4.1. For details about which minimum server version is required for using the asynchronous RPC notification method, see section 1.7.

The client can call the EcDoAsyncConnectEx method after a successful EcDoConnectEx method call. The client MUST save the returned asynchronous context handle after the EcDoAsyncConnectEx method call completes. The client MUST use the asynchronous context handle in the subsequent EcDoAsyncWaitEx method calls to the server, as specified in [MS-OXCRPC] section 3.3.4.1.