Terminating connections and selecting target source devices for resource requests

• US 9,571,566 B2
• Filed: 06/15/2011
• Issued: 02/14/2017
• Est. Priority Date: 06/15/2011
• Status: Expired due to Fees

• Current Assignee: Juniper Networks Incorporated
• Original Assignee: Juniper Networks Incorporated
• Inventors: Kohli, Jaspal
• Primary Examiner(s): Swearingen, Jeffrey R
• Application Number:
  US13/161,090
• Publication Number:
  US 20120324109A1
• Time in Patent Office: 2,071 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 45/64 using an overlay routing layer
• CPC Class Codes: H04L 61/5007 Internet protocol [IP] addresses
• CPC Class Codes: H04L 67/1004 Server selection for load balancing
• CPC Class Codes: H04L 67/563 Data redirection of data network streams
• CPC Class Codes: H04L 67/564 Enhancement of application control based on intercepted application data
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 67/63 Routing a service request depending on the request content or context
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

A device receives, from a client device, a request for a resource, and accesses a table that includes one or more items of information. The device compares information provided in the request to the one or more items of information provided in the table, and terminates a connection for the request at the device when the information provided in the request matches at least one of the one or more items of information provided in the table. The device forwards the request to a network when the connection is not terminated at the device, and selects a target device for the resource when the connection is terminated at the device.

Claims

1. A method performed by a network device, the method comprising:

receiving, at the network device and from a client device, a request for a resource,

the network device being an edge device that is an entry point to a network, and

the resource including a file;

accessing, by the network device, a table that includes one or more items of information,

the one or more items of information in the table being generated based on prior traffic provided to or received by the network device, and

the one or more items of information including;

information identifying one or more applications,

address information associated with one or more client devices,

address information associated with one or more source devices,

information associated with one or more particular client devices, of the one or more client devices, that generate a first number of requests for resources that satisfy a first threshold number of requests, and

information associated with one or more particular target devices that receive a second number of requests for resources that satisfy a second threshold number of requests;

determining, by the network device, that information provided in the request matches at least one of the one or more items of information provided in the table;

terminating, by the network device, a connection for the request based on determining that the information provided in the request matches the at least one of the one or more items of information provided in the table;

providing, by the network device and to the client device, an indication that the connection is terminated based on terminating the connection for the request;

selecting, by the network device and based on terminating the connection for the request, a target device for the resource requested by the request; and

obtaining, by the network device, the resource from the target device via the network.

2. The method of claim 1,

where the information provided in the request identifies at least one of a destination Internet protocol (IP) address, an IP address of the client device, or a destination port.

3. The method of claim 2, further comprising:

comparing the information that identifies the at least one of the destination IP address, the IP address of the client device, or the destination port to the one or more items of information provided in the table.

4. The method of claim 1, further comprising:

extracting a destination Internet protocol (IP) address from the request;

extracting an IP address of the client device from the request;

extracting information identifying a destination port from the request; and

determining that the destination IP address, the IP address of the client device, and the information identifying the destination port match the one or more items of information provided in the table.

5. The method of claim 1, where the connection includes a transmission control protocol (TCP) connection.

6. The method of claim 1, further comprising:

receiving, from the client device, a plurality of substantially concurrent requests associated with a particular application; and

terminating connections, for all or a subset of the plurality of substantially concurrent requests, at the network device.

7. The method of claim 1, further comprising:

performing a search of a list of resources stored in a local cache provided in or connected locally to the network device; and

selecting the local cache as the target device when the search of the list of resources indicates that the resource is stored in the local cache.

8. The method of claim 7, where, when the search of the list of resources indicates that the resource is not stored in the local cache, the method further comprises:

selecting the target device based on one or more of a bandwidth of the network, costs associated with the network, a load provided on the network, or a physical location of the target device in relation to a physical location of the client device; and

connecting with the target device based on selecting the target device.

9. An edge device,

the edge device providing an entry point to a network, and

the edge device comprising:

a memory to store a table that includes one or more items of information,

the one or more items of information in the table being generated based on prior traffic provided to or received by the edge device, and

the one or more items of information including;

information identifying one or more applications,

address information associated with one or more client devices,

address information associated with one or more source devices,

information associated with one or more particular client devices, of the one or more client devices, that generate a first number of requests for resources that satisfy a first threshold number of requests, and

information associated with one or more particular target devices that receive a second number of requests for resources that satisfy a second threshold number of requests; and

a processor to;

receive, from a client device, a request for a resource,

the resource including content,

determine that information provided in the request matches at least one of the one or more items of information provided in the table,

terminate a connection for the request based on determining that the information provided in the request matches at least one of the one or more items of information provided in the table,

select, based on terminating the connection for the request, a target device for the resource requested by the request, and

obtain, via the network, the resource from the target device based on selecting the target device.

10. The edge device of claim 9,

where the information provided in the request identifies at least one of a destination Internet protocol (IP) address, an IP address of the client device, or information identifying a destination port.

11. The edge device of claim 10, where the processor is further to:

compare the at least one of the destination IP address, the IP address of the client device, or the information identifying the destination port to the one or more items of information provided in the table.

12. The edge device of claim 9, where the connection includes a transmission control protocol (TCP) connection.

13. The edge device of claim 9, where the processor is further to:

receive, from the client device, a plurality of substantially concurrent requests associated with a particular application; and

terminate connections, for all or a subset of the plurality of substantially concurrent requests, at the edge device.

14. The edge device of claim 9,

where the edge device further includes a local cache of resources, and

where, the processor is further to:

perform a search of a list of resources stored in the local cache, and

select the local cache as the target device when the search of the list of resources indicates that the resource is stored in the local cache.

15. The edge device of claim 14, where, when the search of the list of resources indicates that the resource is not stored in the local cache, the processor is further to:

provide, to a server device, the request,

receive, from the server device and based on the request, information identifying a location of the target device, and

connect with the target device based on the location.

16. The edge device of claim 9, where the target device is selected based on one or more of:

a bandwidth of the network,

costs associated with the network,

a load provided on the network, or

a physical location of the target device in relation to a physical location of the client device.

17. The edge device of claim 9, where the content includes at least one of video, audio, or software.

18. A non-transitory computer-readable medium storing instructions, the instructions comprising:

one or more instructions that, when executed by at least one processor of an edge device that is an entry point to a network, cause the at least one processor to;

receive, at the edge device, a request for a resource,

the resource including content;

determine that information provided in the request matches one or more items of information provided in a table,

the one or more items of information in the table being generated based on prior traffic provided to or received by the edge device, and

the one or more items of information including;

information identifying one or more applications,

address information associated with one or more client devices,

address information associated with one or more source devices,

information associated with one or more particular client devices, of the one or more client devices, that generate a first number of requests for resources that satisfy a first threshold number of requests, and

information associated with one or more particular target devices that receive a second number of requests for resources that satisfy a second threshold number of requests;

terminate a connection for the request based on determining that the information provided in the request matches the one or more items of information provided in the table;

select, based on terminating the connection for the request, a target device for the resource requested by the request; and

obtain, via the network, the resource from the target device.

19. The non-transitory computer-readable medium of claim 18,

where the information provided in the request includes destination information, and

where the destination information is different from information identifying the target device.

20. The non-transitory computer-readable medium of claim 18, where the instructions further comprise:

one or more instructions that, when executed by the at least one processor, cause the at least one processor to;

provide, to a client device, an indication that the connection is terminated.

21. The non-transitory computer-readable medium of claim 18, where the instructions further comprise:

one or more instructions that, when executed by the at least one processor, cause the at least one processor to;

receive a different request for a different resource;

determine not to terminate a different connection for the different request based on different information provided in the different request; and

forward the different request to the network for additional routing based on determining not to terminate the different connection for the different request.

22. The non-transitory computer-readable medium of claim 21, where the instructions further comprise:

one or more instructions that, when executed by the at least one processor, cause the at least one processor to;

provide, to a client device, an indication that the different connection is not terminated.

23. The non-transitory computer-readable medium of claim 18, where the instructions further comprise:

one or more instructions that, when executed by the at least one processor, cause the at least one processor to;

provide, to a routing broker, a query for a location of the target device that stores the resource, and

receive, from the routing broker, information identifying the target device that stores the resource.

24. The non-transitory computer-readable medium of claim 18, where the instructions further comprise:

one or more instructions that, when executed by the at least one processor, cause the at least one processor to;

provide a proxy of the request to the target device,

receive the resource from the target device, and

forward the resource to a client device.