Reducing transmission pathway lengths within a distributed network

• US 9,813,526 B2
• Filed: 05/26/2015
• Issued: 11/07/2017
• Est. Priority Date: 05/26/2015
• Status: Active Grant

• Current Assignee: SonicWALL US Holdings, Inc. (SonicWall Holdings Ltd.)
• Original Assignee: SonicWALL, Inc. (SonicWall Holdings Ltd.)
• Inventors: Liddicott, Samuel
• Primary Examiner(s): LEE, BRYAN Y
• Application Number:
  US14/722,055
• Publication Number:
  US 20160352869A1
• Time in Patent Office: 896 Days
• Field of Search: 709227
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/033 by updating distance vector protocols
• CPC Class Codes: H04L 45/22 Alternate routing
• CPC Class Codes: H04L 45/306 Route determination based on the nature of the carried application
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/63 Routing a service request depending on the request content or context
• CPC Class Codes: H04L 69/162 involving adaptations of sockets based mechanisms secure socket layer H04L63/168

Abstract

A solution for reducing transmission pathway lengths within a distributed network, as embodied in various systems, methods, and non-transitory computer-readable storage media, may include migrating a TCP socket from a request server to a data server. The solution may further include reprogramming one or more routers to recognize a new packet route based on the migrated socket. The solution may include the one or more routers subsequently communicating directly with the data server while bypassing the request server.

Claims

1. A system for reducing transmission pathway lengths within a distributed network, the system including:

a request server communicatively coupled to the network, wherein the request server;

establishes a socket, the socket associated with socket state information, receives a client request from a client device communicatively coupled to the network,

queries a resource location server regarding which of a plurality of data servers capable of fulfilling the client request, and

identifies a data server capable of fulfilling the client request based on a resource location server response to the query, the data server being one of the plurality of data servers communicatively coupled to the network; and

a router that receives a migrate socket request and the client request from the request server, wherein the router;

stores a routing table in memory,

sends the migrate socket request and the client request to the data server identified by the request server as being capable of fulfilling the client request, wherein the identified data server establishes a new socket based on socket state information in the migrate socket request, and

receives a data response from the identified data server over the established socket, wherein the response bypasses the request server.

2. The system of claim 1, wherein the migrate socket request includes an instruction that the router update the routing table to identify a new route based on the migrate socket request and the identified data server.

3. The system of claim 1, wherein the router updates the routing table by matching destination address and service port information with source address and service port information.

4. The system of claim 1, wherein the data server further determines that the client device received the data response.

5. The system of claim 4, wherein the data server closes the socket when the data server determines that the client device received the data response.

6. The system of claim 5, wherein the router recognizes the closed socket and updates the routing table to reflect that the socket is no longer available for routing purposes.

7. The system of claim 4, wherein the data server transfers the socket state information back to the request server when the data server determines that the client device received the data response.

8. The system of claim 1, wherein the request server identifies the data server capable of fulfilling the client request by identifying a primary server capable of fulfilling the client request, and wherein the request server further identifies a secondary server capable of fulfilling the client request when the primary server is unavailable.

9. The system of claim 1, wherein the router forwards the migrate socket request to one or more additional routers communicatively coupled by the network, and wherein each one or more additional routers includes a routing table that is updated upon receiving the migrate socket request.

10. The system of claim 1, wherein the client request is an HTTP request.

11. The system of claim 1, wherein the client request is an HTTPS request.

12. The system of claim 1, wherein the client request is a non-HTTP request.

13. A method for reducing transmission pathway lengths within a distributed network, the method including:

establishing a socket associated with socket state information;

receiving at a router a client request, the client request received from a client device communicatively coupled to the router by the network;

sending the client request to a request server communicatively coupled to the router by the network;

querying a resource location server to identify which of a plurality of data servers communicatively coupled to the network is capable of fulfilling the client request;

identifying a data server capable of fulfilling the client request based on a resource location server response to the query, the data server being one of a plurality of data servers communicatively coupled to the network;

receiving from the request server a migrate socket request, the client request, and an identification of a data server storing a resource requested by the client request;

sending the client request and the migrate socket request to the identified data server, wherein the identified data server establishes a new socket based on socket state information in the migrate socket request;

executing instructions stored in memory of the router, wherein execution of the instructions by a processor of the router updates one or more routing tables to identify a new route between the client device and the identified data server based on the socket migration; and

transmitting subsequent packets received from the client device to the data server over the new route, wherein the new route bypasses the request server.

14. The method of claim 13, wherein updating the one or more routing tables includes matching destination address and service port information with source address and service port information.

15. The method of claim 13, further comprising receiving an indication that the identified data server has closed the migrated socket.

16. The method of claim 15, further comprising updating the routing table to reflect that the socket is no longer available for routing purposes.

17. A non-transitory computer-readable storage medium having a program embodied thereon, the program being executable by a processor to perform a method for reducing transmission pathway lengths within a distributed network, the method including:

establishing a socket associated with socket state information;

receiving a client request, the client request received from a client device communicatively coupled to the router by the network;

sending the client request to a request server communicatively coupled to the router by the network;

querying a resource location server, the server used to identify data servers capable of fulfilling the client request;

identifying a data server capable of fulfilling the client request based on a resource location server response to the query, the data server being one of a plurality of data servers communicatively coupled to the network;

receiving from the request server a migrate socket request, the client request, and an identification of a data server storing the resource requested by the client request;

sending the client request and the migrate socket request to the data server, wherein the identified data servers establishes a new socket based on socket state information in the migrate socket request;

updating one or more routing tables to identify a new route between the client device and the identified data server based on the socket migration; and

transmitting subsequent packets received from the client device to the identified data server over the new route, wherein the new route bypasses the request server.

18. The non-transitory computer-readable storage medium of claim 17, further comprising executable instructions for updating the one or more routing tables, wherein updating the one or more routing tables includes matching destination address and service port information with source address and service port information.

19. The non-transitory computer-readable storage medium of claim 17, further comprising executable instructions for receiving an indication that the identified data server has closed the migrated socket.

20. The non-transitory computer-readable storage medium of claim 18, further comprising executable instructions for updating the routing table to reflect that the socket is no longer available for routing purposes.