Notification for a set of sessions using a single call issued from a connection pool

• US 8,886,787 B2
• Filed: 02/26/2009
• Issued: 11/11/2014
• Est. Priority Date: 02/26/2009
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Martchenko, Serguei V.
• Primary Examiner(s): Murray, Daniel C
• Application Number:
  US12/393,051
• Publication Number:
  US 20100217872A1
• Time in Patent Office: 2,084 Days
• Field of Search: 709/220, 709/217, 709/224, 719/313, 719/330, 719/318
• US Class Current: 709/224
• CPC Class Codes: G06F 9/547 Remote procedure calls [RPC]; Web services
• CPC Class Codes: H04L 41/046 comprising network management agents or mobile agents therefor
• CPC Class Codes: H04L 43/00 Arrangements for monitoring or testing data switching networks
• CPC Class Codes: H04L 43/0817 by checking functioning
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/133 Protocols for remote procedure calls [RPC]
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/147 Signalling methods or messages providing extensions to protocols defined by standardisation
• CPC Class Codes: H04L 67/148 Migration or transfer of sessions
• CPC Class Codes: H04L 67/60 Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources admission control or resource allocation H04L47/70
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A server-to-server notification model that employs a connection pool such that an asynchronous request issued from the pool can access any session of the remote server for pending notifications on all of the sessions. Only one asynchronous request (or call) is issued to the remote server for all sessions in the connection pool, and the call is completed if any notifications to any participating sessions occur on the remote server. When the asynchronous request completes, the returned data provides a set of the sessions that have pending notifications.

Claims

1. A computer-implemented notification system comprising:

a processor for executing computer-executable components; and

memory storing computer-executable components comprising;

a request component of a local server for issuing a request for change notifications to a remote server using a connection pool associated with a set of sessions open on the remote server, the request for change notifications issued as a single asynchronous call from the connection pool to the remote server, the connection pool including active handles of connections opened between the local server and session objects on the remote server that are associated with the connections, wherein;

the connection pool contains a connection pool reference for keeping the connection pool open as long as there are outstanding calls requiring access to the connection pool,

each active handle contains a reference to the connection pool reference and can be used to perform requests with any session associated with the connection pool, and

the single asynchronous call uses an active handle selected from the connection pool and can access any open session on the remote server that is included in the set of sessions associated with the connection pool for requesting change notifications from all of the sessions included in the set of sessions associated with the connection pool; and

a return component for receiving a list of sessions on the remote server that are included in the set of sessions associated with the connection pool and have pending change notifications.

2. The system of claim 1, wherein the set of sessions associated with the connection pool includes one or more messaging application programming interface (MAPI) sessions.

3. The system of claim 1, wherein the return component completes the single asynchronous call in response to receiving the list.

4. The system of claim 1, wherein the single asynchronous call issued from the connection pool maps to all sessions on the remote server that are included in the set of sessions associated with the connection pool.

5. The system of claim 1, wherein:

the single asynchronous call is a remote procedure call (RPC) issued from the connection pool,

the local server is a middle tier server, and

the remote server is a backend server.

6. The system of claim 5, wherein:

the middle tier server is an email server, and

the backend server is a messaging server.

7. The system of claim 1, wherein:

the active handle used by the single asynchronous call is a remote procedure call (RPC) handle,

the RPC handle contains a reference to the connection pool reference,

the RPC handle is released back to the connection pool upon completion of the single asynchronous call, and

the connection pool reference is decremented.

8. The system of claim 1, wherein:

the single asynchronous call is queued by the remote server when no sessions on the remote server that are included in the set of sessions associated with the connection pool have pending change notifications, and

the remote server responds to a queued asynchronous call after a notification occurs in any session on the remote server that is included in the set of sessions associated with the connection pool.

9. The system of claim 1, wherein:

the single asynchronous call is queued by the remote server, and

the remote server immediately responds to a queued asynchronous call if a change notification is pending in any session on the remote server that is included in the set of sessions associated with the connection pool.

10. A computer storage medium that does not consist of a signal, the computer storage medium storing computer-executable instructions that, when executed, cause a local server to perform a method comprising:

issuing a request for change notifications remote server using a connection pool associated with a set of sessions open on the remote server, the request for change notifications issued as a single asynchronous call from the connection pool to the remote server, the connection pool including active handles of connections opened between the local server and session objects on the remote server that are associated with the connections, wherein;

the connection pool contains a connection pool reference for keeping the connection pool open as long as there are outstanding calls requiring access to the connection pool,

each active handle contains a reference to the connection pool reference and can be used to perform requests with any session associated with the connection pool, and

the single asynchronous call uses an active handle selected from the connection pool and can access any open session on the remote server that is included in the set of sessions associated with the connection pool for requesting change notifications from all of the sessions included in the set of sessions associated with the connection pool; and

receiving a list of all sessions on the remote server that are included in the set of sessions associated with the connection pool and have pending change notifications.

11. The computer storage medium of claim 10, wherein:

the active handle used by the single asynchronous call is a remote procedure call (RPC) handle,

the single asynchronous call is an RPC call issued from the connection pool to the remote server,

the RPC handle contains a reference to the connection pool reference,

the RPC handle is released back to the connection pool upon completion of the single asynchronous call, and

the connection pool reference is decremented.

12. The computer storage medium of claim 10, wherein set of sessions associated with the connection pool includes one or more messaging application programming interface (MAPI) sessions.

13. The computer storage medium of claim 10, wherein:

the single asynchronous call is queued by the remote server when no sessions on the remote server that are included in the set of sessions associated with the connection pool have pending change notifications, and

the remote server responds to a queued asynchronous call after a notification occurs in any session on the remote server that is included in the set of sessions associated with the connection pool.

14. The computer storage medium of claim 10, wherein:

the remote server immediately responds to the single asynchronous call if a change notification is pending in any session on the remote server that is included in the set of sessions associated with the connection pool.

15. A computer-implemented method of notification, comprising:

issuing a request for change notifications to a remote server using a connection pool associated with a set of sessions open on the remote server, the request for change notifications issued as a single asynchronous call from the connection pool to the remote server, the connection pool including active handles of connections opened between a local server and session objects on the remote server that are associated with the connections, wherein;

the connection pool contains a connection pool reference for keeping the connection pool open as long as there are outstanding calls requiring access to the connection pool,

each active handle contains a reference to the connection pool reference and can be used to perform requests with any session associated with the connection pool, and

the single asynchronous call uses an active handle selected from the connection pool and can access any open session on the remote server that is included in the set of sessions associated with the connection pool for requesting change notifications from all of the sessions included in the set of sessions associated with the connection pool; and

receiving a list of all sessions on the remote server that are included in the set of sessions associated with the connection pool and have pending change notifications.

16. The method of claim 15, wherein the set of sessions associated with the connection pool includes one or more messaging application programming interface (MAPI) sessions.

17. The method of claim 15, wherein:

the single asynchronous call is a remote procedure (RPC) call issued by the connection pool,

the local server is a middle tier email server, and

the remote server is a backend messaging server.

18. The method of claim 15, wherein:

the single asynchronous call is queued at the remote server when no sessions on the remote server that are included in the set of sessions associated with the connection pool have pending change notifications, and

the remote server responds to a queued asynchronous call after a change notification occurs in any session on the remote server that is included in the set of sessions associated with the connection pool.

19. The method of claim 15, wherein:

the remote server immediately responds to the single asynchronous call if a change notification is pending in any session on the remote server that is included in the set of sessions associated with the connection pool.

20. The method of claim 15, further comprising:

releasing the active handle used by the single asynchronous call back to the connection pool after completion of the single asynchronous call; and

decrementing the connection pool reference.