System and method for monitoring a connection between a server and a passive client device

• US 20030212801A1
• Filed: 05/07/2002
• Published: 11/13/2003
• Est. Priority Date: 05/07/2002
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Yang-Huffman, Siew-Hong
• Granted Patent: US 7,299,264 B2
• Time in Patent Office: Days
• US Class Current: 709/228
• 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 69/162 involving adaptations of sockets based mechanisms secure socket layer H04L63/168
• CPC Class Codes: H04L 69/163 In-band adaptation of TCP data exchange; In-band control procedures

Abstract

A system and method for monitoring a connection between a server and a passive client device is disclosed. The method comprises continuously monitoring whether an input data stream of an existing connection between the server and the client device is empty, and if so, determining the presence of a request for a new connection between the server and the passive client device, closing the existing connection in response to the presence of the request for new connection, and establishing the new connection. The system comprises a server operable to continuously monitor whether there is a problem in an existing connection between the server and a passive client device, and if so, determining the presence of a request for a new connection between the server and the client device, the server further operable to close the existing connection and establish the new connection between the server and the passive client device.

Claims

1. A method for monitoring a connection between a server and a passive client device, comprising:

continuously monitoring whether an input data stream of an existing connection between said server and said passive client device is empty, and if so, determining the presence of a request for a new connection between said server and said passive client device;

closing said existing connection in response to the presence of said request for new connection; and

establishing said new connection between said server and said passive client device.

2. The method of claim 1, further comprising processing data from said input data stream in response to said input data stream not being empty.

3. The method of claim 1, further comprising determining the presence of a problem in said existing connection.

4. The method of claim 1, further comprising determining the presence of at least one exception condition out of a plurality of exception conditions.

5. The method of claim 4, wherein said at least one exception condition is selected from the group consisting of an IOException and a SocketException.

6. The method of claim 1, further comprising receiving said request for said new connection from said passive client device.

7. The method of claim 1, further comprising storing said request for said new connection in a socket connection queue.

8. The method of claim 1, wherein said passive client device comprises a Transmission Control Protocol (TCP) device.

9. The method of claim 1, wherein said request for said new connection is a request for a new TCP connection.

10. The method of claim 1, wherein said existing connection is a TCP connection.

11. A method for monitoring a connection between a server and a passive client device, comprising:

determining, after the lapse of a user-defined time period, whether an input data stream of an existing connection between said server and said passive client device is empty, and if so, determining the presence of a request for a new connection between said server and said passive client device in response to said input data stream being empty;

closing said existing connection in response to the presence of said request for new connection; and

establishing said new connection between said server and said passive client device.

12. The method of claim 11, further comprising processing data from said input data stream in response to said input data stream not being empty.

13. The method of claim 11, further comprising determining the presence of a problem in said existing connection.

14. The method of claim 11, further comprising determining the presence of at least one exception condition out of a plurality of exception conditions.

15. The method of claim 14, wherein said at least one exception condition is selected from the group consisting of an IOException and a SocketException.

16. The method of claim 11, further comprising receiving said request for said new connection from said passive client device.

17. The method of claim 11, further comprising storing said request for said new connection in a socket connection queue.

18. The method of claim 11, wherein said passive client device comprises a Transmission Control Protocol (TCP) device.

19. The method of claim 11, wherein said request for said new connection is a request for a new TCP connection.

20. The method of claim 11, wherein said existing connection is a TCP connection.

21. A method for monitoring a connection between a server and a passive client device, comprising:

continuously monitoring whether there is a problem in an existing connection between said server and said passive client device, and if so, determining the presence of a request for a new connection between said server and said passive client device;

closing said existing connection in response to the presence of said request for new connection; and

establishing said new connection between said server and said passive client device.

22. The method of claim 21, further comprising determining the presence of at least one exception condition out of a plurality of exception conditions.

23. The method of claim 22, wherein at least one of said plurality of exception conditions is selected from the group consisting of an IOException and a SocketException.

24. A method for monitoring a connection between a server and a passive client device, comprising:

determining, by said server without communicating with said passive client device, the presence of a problem in an existing connection between said server and said passive client device;

determining the presence of a request for a new connection between said server and said passive client device in response to the presence of said problem in said existing connection;

closing said existing connection in response to the presence of said request for new connection; and

establishing said new connection between said server and said passive client device.

25. The method of claim 24, further comprising determining the presence of at least one exception condition out of a plurality of exception conditions.

26. The method of claim 25, wherein at least one of said plurality of exception conditions is selected from the group consisting of an IOException and a SocketException.

27. A system for monitoring a connection, comprising:

a passive client device operable to generate a request for a new connection; and

a server operable to continuously monitor whether an input data stream of an existing connection between said server and said passive client device is empty, and if so, determining the presence of said request for new connection between said server and said passive client device, said server further operable to close said existing connection and establish said new connection between said server and said passive client device.

28. The system of claim 27, said server being further operable to determine the presence of a problem in said existing connection.

29. The system of claim 27, wherein said request for said new connection is a request for a new Transmission Control Protocol (TCP) connection and said existing connection is a TCP socket connection.

30. The system of claim 27, wherein said passive client device comprises a TCP device.

31. The system of claim 27, wherein said passive client device does not provide status information to said server, wherein said status information is selected from the group consisting of status information for said passive client device and status information for said existing connection.

32. A system for monitoring a connection, comprising:

a server operable to continuously monitor whether there is a problem in an existing connection between said server and a passive client device, and if so, determining the presence of a request for a new connection between said server and said passive client device, said server further operable to close said existing connection and establish said new connection between said server and said passive client device.

33. The system of claim 32, wherein said request for said new connection is a request for a new Transmission Control Protocol (TCP) socket connection and said existing connection is a TCP socket connection.

34. An application for monitoring a connection between a server and a passive client device, comprising:

application software resident on a computer-readable medium and operable to;

continuously monitor whether an input data stream of an existing connection between said server and said passive client device is empty, and if so, determining the presence of a request for a new connection between said server and said passive client device;

close said existing connection in response to the presence of said request for new connection; and

establish said new connection between said server and said passive client device.

35. The application of claim 34, said application software further operable to process data from said input data stream in response to said input data stream not being empty.

36. The application of claim 34, said application software further operable to determine the presence of a problem in said existing connection.

37. The application of claim 34, said application software further operable to determine the presence of at least one exception condition out of a plurality of exception conditions.

38. The application of claim 34, said application software further operable to receive said request for said new connection from said passive client device.

39. The application of claim 34, said application software further operable to store said request for said new connection in a socket connection queue.

40. A system for monitoring a connection between a server and a passive client device, comprising:

means for continuously monitoring whether an input data stream of an existing connection between said server and said passive client device is empty, and if so, determining the presence of a request for a new connection between said server and said passive client device;

means for closing said existing connection in response to the presence of said request for new connection; and

means for establishing said new connection between said server and said passive client device.

41. The system of claim 40, further comprising means for processing data from said input data stream in response to said input data stream not being empty.

42. The system of claim 40, further comprising means for determining the presence of a problem in said existing connection.

43. The system of claim 40, further comprising means for determining the presence of at least one exception condition out of a plurality of exception conditions.

44. The system of claim 40, further comprising means for receiving said request for said new connection from said passive client device.

45. The system of claim 40, further comprising means for storing said request for said new connection in a socket connection queue.