Systems and Methods for Single Stack Shadowing

• US 20100049797A1
• Filed: 10/30/2009
• Published: 02/25/2010
• Est. Priority Date: 01/14/2005
• Status: Active Grant

• Current Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Original Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Inventors: Ryman, Paul
• Granted Patent: US 8,200,828 B2
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: H04L 67/125 involving control of end-device applications over a network
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 69/32 Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
• CPC Class Codes: H04L 69/328 in the presentation layer [OSI layer 6]

Abstract

Methods and systems directed to controlling a real-time user session of presentation layer protocol data. Methods describing a shadowing agent service receiving a connection request from a shadowing tool and initiating a rollover operation responsive to the connection request. A rollover operation including reinitializing the single protocol stack and receiving a protocol data stream from the protocol stack. The shadowing agent service receiving a second data stream from the shadowing tool and inserting data from the second protocol data stream into the protocol stack. Systems describing a controller of the shadowing agent service receiving a connection request from a shadowing tool; a recorder of the shadowing agent service initiating a rollover operation responsive to the connection request; the controller receiving a second protocol data stream from the shadowing tool; and the controller inserting data from the second protocol data stream into the protocol stack.

Claims

1. A method for controlling a real-time user session of presentation layer protocol data, the method comprising:

(a) establishing, by a server, a shadowing agent service and a user session comprising a single presentation layer protocol stack for communication with a client agent;

(b) receiving, by the shadowing agent service, a connection request from a shadowing tool executing on a computing device;

(c) initiating, by the shadowing agent service, a rollover operation responsive to receipt of the connection request, the rollover operation comprising;

(i) reinitializing the single presentation layer protocol stack; and

(ii) receiving a first presentation layer protocol data stream from the single presentation layer protocol stack;

(d) receiving, by the shadowing agent service, a second presentation layer protocol data stream from the shadowing tool; and

(e) inserting, by the shadowing agent service, data from the second presentation layer protocol data stream into the single presentation layer protocol stack.

2. The method of claim 1, further comprising storing, by the shadowing agent service, the first presentation layer protocol data stream in a plurality of files stored on the server.

3. The method of claim 2, further comprising deleting, by the shadowing agent service, the plurality of files once the client agent disconnects from the server.

4. The method of claim 1, further comprising initiating, by the shadowing agent service, the rollover operation when one of a predetermined file size and durational threshold is met and creating a new file to store the first presentation layer protocol data stream.

5. The method of claim 4, further comprising deleting, by the shadowing agent service, an oldest existing file storing the first presentation layer protocol data stream, retaining at least two files storing the first presentation layer protocol data stream.

6. The method of claim 1, further comprising storing, by the shadowing agent service, the first data stream in volatile memory of the server.

7. The method of claim 6, further comprising encrypting, by the shadowing agent service, the stored data stream in volatile memory.

8. The method of claim 7, further comprising storing, by the shadowing agent service, the first data stream as a process-local temporary file designated for deletion upon close of the process.

9. The method of claim 1, further comprising communicating, by the shadowing agent service, with a permission agent executing in the user session to obtain permission to grant the connection request from the shadowing tool.

10. The method of claim 1, further comprising deleting, by the shadowing agent service, the stored data stream once the client agent disconnects from the server.

20. The system of claim 1, wherein the shadowing agent service deletes the stored data stream once the client agent disconnects from the server.

11. A system for controlling a real-time user session of presentation layer protocol data comprising:

a server establishing a shadowing agent service and a user session comprising a single presentation layer protocol stack for communication with a client agent;

a controller of the shadowing agent service receiving a connection request from a shadowing tool executing on a computing device;

a recorder of the shadowing agent service initiating a rollover operation responsive to receipt of the connection request, the rollover operation comprising;

reinitializing the single presentation layer protocol stack; and

receiving a first presentation layer protocol data stream from the single presentation layer protocol stack;

the controller receiving a second presentation layer protocol data stream from the shadowing tool; and

the controller inserting data from the second presentation layer protocol data stream into the single presentation layer protocol stack.

12. The system of claim 11, wherein the shadowing agent service stores the first presentation layer protocol data stream in a plurality of files stored on the server.

13. The system of claim 12, wherein the shadowing agent service deletes the plurality of files once the client agent disconnects from the server.

14. The system of claim 11, wherein the shadowing agent service initiates the rollover operation when one of a predetermined file size and durational threshold is met and creating a new file to store the first presentation layer protocol data stream.

15. The system of claim 14, wherein the shadowing agent service deletes an oldest existing file storing the first presentation layer protocol data stream, retaining at least two files storing the first presentation layer protocol data stream.

16. The system of claim 11, wherein the shadowing agent service stores the first data stream in volatile memory of the server.

17. The system of claim 16, wherein the shadowing agent service encrypts the stored data stream in volatile memory.

18. The system of claim 17, wherein the shadowing agent service stores the first data stream as a process-local temporary file designated for deletion upon close of the process.

19. The system of claim 11, wherein the shadowing agent service communicates with a permission agent executing in the user session to obtain permission to grant the connection request from the shadowing tool.