Method and system for providing network services

• US 8,738,700 B2
• Filed: 10/04/2011
• Issued: 05/27/2014
• Est. Priority Date: 10/08/2010
• Status: Active Grant

• Current Assignee: F5 Networks, Inc. (F5 Incorporated)
• Original Assignee: F5 Networks, Inc. (F5 Incorporated)
• Inventors: Shafran, Gil, Ridel, Lenny
• Primary Examiner(s): Nguyen, Tammy
• Application Number:
  US13/252,481
• Publication Number:
  US 20120089677A1
• Time in Patent Office: 966 Days
• Field of Search: 709/204, 709/217, 709/26.1, 370/352, 705/7.12, 705/7.11, 705/14.39, 705/1.1
• US Class Current: 709/204
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 67/288 Distributed intermediate devices, i.e. intermediate devices for interaction with other intermediate devices on the same level
• CPC Class Codes: H04L 67/563 Data redirection of data network streams
• CPC Class Codes: H04L 67/565 Conversion or adaptation of application format or content adding application control or application functional data H04L67/561
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols

Abstract

The present invention provides a system for intermediating between client nodes and pools of server nodes in an NGN network where the server nodes provide network services to client nodes, wherein the client nodes use various communication protocols and at least part of said communication protocols are different from the communication protocol used by the server nodes. The system comprising: a cluster of associated gateway nodes providing an integrated service for the clients nodes, where each gateway provides services of at least one of: translations of request and answers between the client node and a provider server node, load balancing and managing scenario rules. Each gateway comprise: a database of scripts including, scenario rules, routing scripts and associated transformation scripts, an execution processing module for handling events of at least client requests and server answers according to scenario rules.

Claims

1. A method for facilitating communications in a telecommunications network, comprising:

generating, with a gateway server, one or more subsequent requests based on an application of one or more of a plurality of scenario rules to one or more of a plurality of requests received from a client, wherein the plurality of received requests have a same associated context and conform to a first communication protocol associated with the client;

identifying, with the gateway server, one or more servers in a pool of servers based on an application of one or more of a plurality of routing scripts to one or more of the plurality of received requests;

applying, with the gateway server, one or more of a plurality of transformation scripts to transform the plurality of received requests and the one or more subsequent requests to conform with a second communication protocol associated with the identified one or more servers and different than the first communication protocol; and

sending, with the gateway server, the transformed plurality of received requests and one or more subsequent requests to the identified one or more servers.

2. The method of claim 1, further comprising:

receiving, with the gateway server, a plurality of answers to the one or more transformed plurality of received requests and one or more subsequent requests from the one or more servers;

transforming, with the gateway server, one or more of the plurality of answers based on an application of the one or more of the plurality of transformation scripts to conform with the first communication protocol; and

sending, with the gateway server, the transformed one or more of the plurality of answers to the client.

3. The method of claim 2, wherein:

the one or more subsequent requests comprise a plurality of subsequent requests that are equivalent to the one or more of a plurality of requests received from the client;

the sending further comprising sending each of the plurality of subsequent requests to a different one of the servers in the pool of servers substantially in parallel; and

the transformed one or more of the plurality of answers comprises a first received one of the plurality of answers.

4. The method of claim 2, further comprising:

suspending, with the gateway server, the transforming and sending of the plurality of received requests;

determining, with the gateway server, whether the plurality of answers to the transformed one or more subsequent requests has been received; and

activating, with the gateway server, the suspended plurality of received requests using data included in the plurality of answers to the transformed one or more subsequent requests.

5. The method of claim 4, wherein the one or more subsequent requests are configured to retrieve the data from the one or more of the servers and the data is required for completing the plurality of received requests.

6. The method of claim 1, wherein the plurality of scenario rules, the plurality of routing scripts, and the plurality of transformation scripts are stored in a scripts database having a hierarchical structure such that each of the plurality of scenario rules is related to one or more of the plurality of routing scripts and each of the plurality of routing scripts is related to one or more of the plurality of transformation scripts.

7. The method of claim 1, wherein the same associated context comprises a same communication session.

8. The method of claim 1, further comprising selecting, with the gateway server, the one or more scenario rules, the one or more routing scripts, or the one or more transformation scripts from a scripts database based on one or more properties oft he one or more of the plurality of received requests, a profile associated with the client, or a session history.

9. The method of claim 1, further comprising load balancing, with the gateway server, the plurality of requests to a plurality of the severs in the server pool according to the one or more of the routing scripts.

10. The method of claim 1, further comprising:

recording, with the gateway server, a sequence of the plurality of received requests having the same associated context in a cache list;

determining, with the gateway sever, when the associated context has ended; and

performing, with the gateway sever, the generating, identifying, applying, and sending steps based on the cache list when the associated context is determined to have ended.

11. A gateway server apparatus, comprising:

a memory coupled to the a processor which is configured to execute programmed instructions stored in the memory comprising;

generating one or more subsequent requests based on an application of one or more of a plurality of scenario rules to one or more of a plurality of requests received from a client, wherein the plurality of received requests have a same associated context and conform to a first communication protocol associated with the client;

identifying one or more servers in a pool of servers based on an application of one or more of a plurality of routing scripts to one or more of the plurality of received requests;

applying one or more of a plurality of transformation scripts to transform the plurality of received requests and the one or more subsequent requests to conform with a second communication protocol associated with the identified one or more servers and different than the first communication protocol; and

sending the transformed plurality of received requests and one or more subsequent requests to the identified one or more servers.

12. The apparatus of claim 11 wherein the processor is further configured to execute programmed instructions stored in the memory further comprising:

receiving a plurality of answers to the one or more transformed plurality of received requests and one or more subsequent requests from the one or more servers;

transforming, one or more of the plurality of answers based on an application of the one or more of the plurality of transformation scripts to conform with the first communication protocol; and

sending the transformed one or more of the plurality of answers to the client.

13. The apparatus of claim 11, wherein:

the one or more subsequent requests comprise a plurality of subsequent requests that are equivalent to the one or more of a plurality of requests received from the client;

the sending further comprising sending each of the plurality of subsequent requests to a different one of the servers in the pool of servers substantially in parallel; and

the transformed one or more of the plurality of answers comprises a first received one of the plurality of answers.

14. The apparatus of claim 11, wherein the processor is further configured to execute programmed instructions stored in the memory further comprising:

suspending the transforming and sending of the plurality of received requests;

determining whether the plurality of answers to the transformed one or more subsequent requests has been received; and

activating the suspended plurality of received requests using data included in the plurality of answers to the transformed one or more subsequent requests.

15. The apparatus of claim 11, wherein the one or more subsequent requests are configured to retrieve the data from the one or more of the servers and the data is required for completing the plurality of received requests.

16. The apparatus of claim 11, wherein the plurality of scenario rules, the plurality of routing scripts, and the plurality of transformation scripts are stored in a scripts database having a hierarchical structure such that each of the plurality of scenario rules is related to one or more of the plurality of routing scripts and each of the plurality of routing scripts is related to one or more of the plurality of transformation scripts.

17. The apparatus of claim 11, wherein the same associated context comprises a same communication session.

18. The apparatus of claim 11, wherein the processor is further configured to execute programmed instructions stored in the memory further comprising selecting the one or more scenario rules, the one or more routing scripts, or the one or more transformation scripts from a scripts database based on one or more properties of the one or more of the plurality of received requests, a profile associated with the client, or a session history.

19. The apparatus of claim 11, wherein the processor is further configured to execute programmed instructions stored in the memory further comprising load balancing the plurality of requests to a plurality of the severs in the server pool according to the one or more of the routing scripts.

20. The apparatus of claim 11, wherein the processor is further configured to execute programmed instructions stored in the memory further comprising:

recording a sequence of the plurality of received requests having the same associated context in a cache list;

determining when the associated context has ended; and

performing the generating, identifying, applying, and sending steps based on the cache list when the associated context is determined to have ended.