Methods and systems for integrating with load balancers in a client and server system

• US 7,207,044 B2
• Filed: 11/21/2002
• Issued: 04/17/2007
• Est. Priority Date: 11/21/2001
• Status: Active Grant

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: Laux, Thorsten O., Pfohe, Thomas, Chernolvanov, Dennis
• Primary Examiner(s): Najjar; Saleh
• Assistant Examiner(s): NGUYEN, THUONG
• Application Number:
  US10/301,293
• Publication Number:
  US 20030097405A1
• Time in Patent Office: 1,608 Days
• Field of Search: 709/203, 709/230, 718/105, 455/453
• US Class Current: 718/105
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

Methods, systems, and articles of manufacture consistent with the present invention provide for exchanging messages directly between a client and a selected server regardless of the use of a load balancer. The client generates a message to bypass performing load balancing functionality at the load balancer, and sends the message to the load balancer. The load balancing functionality is bypassed and the message is sent directly to the selected server by the load balancer.

Claims

1. A method in a data processing system having a client, and a load balancer performing load balancing functionality, for a plurality of servers, the client having a client program, the method comprising the steps performed by the client program of:

generating a message indicating to the load balancer to bypass performing the load balancing functionality of distribution messages to the plurality of servers, and indicating a selected one of the servers to receive the message; and

sending the message to the load balancer, whereupon the load balancer bypasses performing load balancing functionality and sends the message directly to the selected server indicated in the message.

2. The method of claim 1, wherein the message is implemented in a first protocol, and wherein the method further comprises the step of:

encapsulating the message in a second protocol different than the first protocol prior to sending the message.

3. The method of claim 2, wherein the second protocol is the HTTP protocol.

4. The method of claim 2, wherein the message has a request for content data from the selected server.

5. The method of claim 1, wherein the message is implemented in a first protocol;

and wherein the method further comprises the step of;

sending a second message implemented in a second protocol encapsulated in the first protocol, the second message having a request for a content data from the selected server.

6. The method of claim 1, further comprising the step of:

receiving a return message from the selected server.

7. The method of claim 6, wherein the return message includes content data from the selected sewer.

8. The method of claim 7, wherein the content data is web page data.

9. The method of claim 6, wherein the return message acknowledges that the load balancing functionality is bypassed.

10. The method of claim 1, wherein the message includes at least one of a client identifier and a selected sewer identifier.

11. A computer-readable storage medium containing instructions that cause a client program on a client to perform a method, the client being in a data processing system having the client, and a load balancer performing a load balancing functionality, for a plurality of servers, the method performed by the client program comprising the steps of:

generating a message indicating to the load balancer to bypass performing the load balancing functionality of distribution messages to the plurality of servers, and indicating a selected one of the servers to receive the message; and

sending the message to the load balancer, whereupon the load balancer bypasses performing load balancing functionality and sends the message directly to the selected server indicated in the message.

12. The computer-readable storage medium of claim 11, wherein the message is implemented in a first protocol, and wherein the method further comprises the step of:

encapsulating the message in a second protocol different than the first protocol prior to sending the message.

13. The computer-readable storage medium of claim 12, wherein the second protocol is the HTTP protocol.

14. The computer-readable storage medium of claim 12, wherein the message has a request for content data from the selected server.

15. The computer-readable storage medium of claim 11, wherein the message is implemented in a first protocol;

and wherein the method further comprises the step of;

sending a second message implemented in a second protocol encapsulated in the first protocol, the second message having a request for a content data from the selected server.

16. The computer-readable storage medium of claim 11, further comprising the step of:

receiving a return message from the selected server.

17. The computer-readable storage medium of claim 16, wherein the return message includes content data from the selected server.

18. The computer-readable storage medium of claim 17, wherein the content data is web page data.

19. The computer-readable storage medium of claim 16, wherein the return message acknowledges that the load balancing functionality is bypassed.

20. The computer-readable storage medium of claim 11, wherein the request includes at least one of a client identifier and selected server identifier.

21. A client data processing system comprising:

a memory comprising a program that generates a message indicating to a load balancer to bypass performing a load balancing functionality of distribution messages to the plurality of servers at the load balancer, and indicating a selected one of a plurality of servers to receive the message, and

sends the message to the load balancer, whereupon the load balancer bypasses performing load balancing functionality and sends the message directly to the selected server indicated in the message; and

processing unit that runs the program.

22. A client data processing system comprising:

means for generating a message indicating to a load balancer to bypass performing a load balancing functionality of distribution messages to the plurality of servers at the load balancer, and indicating a selected one of a servers to receive the message; and

means for sending the message to the load balancer, whereupon the load balancer bypasses performing load balancing functionality and sends the message directly to the selected server indicated in the message.

23. A method in a data processing system having a client, and a load balancer performing a load balancing functionality, for a plurality of servers, the load balancer having a load balancer program, the method comprising the steps performed by the load balancer program of:

receiving a message from the client;

determining whether the message indicates to the load balancer to bypass performing the load balancing functionality of distribution messages to the plurality of servers by indicating a selected one of the servers to receive the message;

when the message does not indicate the selected server to receive the message, sending the message to a determined one of the servers based on the load balancing functionality; and

when the message indicates the selected server, bypassing the load balancing functionality and sending the message directly to the selected server indicated in the message.

24. The method of claim 23, wherein the load balancer can analyze messages of a first protocol, and wherein the message is received in a second protocol encapsulated in the first protocol.

25. The method of claim 24, wherein the second protocol is the HTTP protocol.

26. The method of claim 23, wherein the message includes a request for content data from the selected server.

27. The method of claim 23, further comprising the steps of:

receiving a return message from the selected server; and

sending the return message to the client.

28. The method of claim 27, wherein the return message includes content data from the selected server.

29. The method of claim 28, wherein the content data is web page data.

30. The method of claim 27, wherein the return message acknowledges that the message was sent to the selected server.

31. The method of claim 23, wherein the message includes at least one of a client identifier and a selected server identifier.

32. A computer-readable storage medium containing instructions that cause a load balancer program on a load balancer to perform a method, the load balancer being in a data processing system having a client, and the load balancer performing a load balancing functionality, for a plurality of servers, the method performed by the load balancer program comprising the steps of:

receiving a message from the client;

determining whether the message indicates to the load balancer to bypass performing the load balancing functionality of distribution messages to the plurality of servers by indicating a selected one of the servers to receive the message;

when the message does not indicates the selected server to receive the message, sending the message to determined one of the servers based on the load balancing functionality; and

when the message indicates the selected server, bypassing the load balancing functionality and sending the message directly to the selected server indicated in the message.

33. The computer-readable storage medium of claim 32, wherein the load balancer can analyze messages of a first protocol, and wherein the message is received in a second protocol encapsulated in the first protocol.

34. The computer-readable storage medium of claim 33, wherein the second protocol is the HTTP protocol.

35. The computer-readable storage medium of claim 32, wherein the message includes a request for content data from the selected server.

36. The computer-readable storage medium of claim 32, further comprising the steps of:

receiving a return message from the selected server; and

sending the return message to the client.

37. The computer-readable storage medium of claim 36, wherein the return message includes content data from the selected server.

38. The computer-readable storage medium of claim 37, wherein the content data is web page data.

39. The computer-readable storage medium of claim 36, wherein the return message acknowledges that the message was sent to the selected server.

40. The computer-readable storage medium of claim 32, wherein the message includes at least one of a client identifier and a selected server identifier.

41. A load balancer comprising:

a memory comprising a program that receives a message from a client, determines whether the message indicates to the load balancer to bypass performing a load balancing functionality of distribution messages to a plurality of servers by indicating a selected one of a plurality of servers to receive the message, sends the message to a determined one of the servers based on a load balancing functionality when message does not indicate the selected server to receive the message, and bypasses load balancing functionality and sends the message directly to the selected server when the message indicates the selected server; and

a processing unit that runs the program.