Multiple packet UDP data transfers

• US 20090074008A1
• Filed: 09/17/2007
• Published: 03/19/2009
• Est. Priority Date: 09/17/2007
• Status: Active Grant

• Current Assignee: McAfee, LLC
• Original Assignee: McAfee, Inc. (McAfee, LLC)
• Inventors: Roberts, Guy, Sargent, John, Barton, Chris, Engelken, Dallas
• Granted Patent: US 8,219,686 B2
• Time in Patent Office: Days
• US Class Current: 370/469
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/193 at the transport layer, e.g. TCP related
• CPC Class Codes: H04L 47/35 by embedding flow control information in regular packets, e.g. piggybacking
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 63/101 Access control lists [ACL]
• CPC Class Codes: H04L 69/326 in the transport layer [OSI layer 4] H04L69/16 takes precedence

Abstract

A method and computer program produce provide the capability to use UDP to send messages that include more data than can be handled by a single UDP packet. A method for performing data transfer implemented in a computer system comprises transmitting a request for data, receiving a response to the request for data comprising a portion of the requested data and an indication that additional data is available, and transmitting a request for additional data.

Claims

1. A method for performing data transfer implemented in a computer system comprising:

transmitting a request for data;

receiving a response to the request for data comprising a portion of the requested data and an indication that additional data is available; and

transmitting a request for additional data.

2. The method of claim 1, wherein the method uses User Datagram Protocol.

3. The method of claim 2, wherein the transmitted request for data includes a domain.

4. The method of claim 3, wherein the transmitted request for data comprises a lookup request for a domain sent to a Domain Name Server Blacklist/Real-time Blackhole List.

5. The method of claim 1, wherein the response further comprises a pseudo-Internet Protocol address.

6. The method of claim 5, wherein the pseudo-Internet Protocol address comprises the indication that additional data is available.

7. The method of claim 1, wherein the request for additional data comprises a pseudo-domain indicating that additional data is being requested.

8. The method of claim 1, wherein the response to the request for data further comprises an indication of an amount of the additional data that is available.

9. The method of claim 8, wherein the response further comprises a pseudo-Internet Protocol address.

10. The method of claim 9, wherein the pseudo-Internet Protocol address comprises the indication of the amount of the additional data that is available.

11. A method for performing data transfer implemented in a computer system comprising:

a) transmitting a request for data using User Datagram Protocol;

b) receiving a response to the request for data using the User Datagram Protocol, the response comprising a portion of the requested data that fits in a User Datagram Protocol packet and an indication that additional data is available;

c) transmitting a request for additional data using the User Datagram Protocol; and

d) repeating steps b)-c) until a response is received indicating that no additional data is available.

12. The method of claim 11, wherein the transmitted request for data includes a domain.

13. The method of claim 12, wherein the transmitted request for data comprises a lookup request for a domain sent to a Domain Name Server Blacklist/Real-time Blackhole List.

14. The method of claim 11, wherein the response further comprises a pseudo-Internet Protocol address.

15. The method of claim 14, wherein the pseudo-Internet Protocol address comprises the indication that additional data is available.

16. The method of claim 11, wherein the request for additional data comprises a pseudo-domain indicating that additional data is being requested.

17. A computer program product for performing data transfer comprising:

a computer readable storage medium;

computer program instructions, recorded on the computer readable storage medium, executable by a processor, for performing the steps of

a) transmitting a request for data using User Datagram Protocol;

b) receiving a response to the request for data using the User Datagram Protocol, the response comprising a portion of the requested data that fits in a User Datagram Protocol packet and an indication that additional data is available;

c) transmitting a request for additional data using the User Datagram Protocol; and

d) repeating steps b)-c) until a response is received indicating that no additional data is available.

18. The computer program product of claim 17, wherein the transmitted request for data includes a domain.

19. The computer program product of claim 18, wherein the transmitted request for data comprises a lookup request for a domain sent to a Domain Name Server Blacklist/Real-time Blackhole List.

20. The computer program product of claim 17, wherein the response further comprises a pseudo-Internet Protocol address.

21. The computer program product of claim 20, wherein the pseudo-Internet Protocol address comprises the indication that additional data is available.

22. The computer program product of claim 17, wherein the request for additional data comprises a pseudo-domain indicating that additional data is being requested.

23. A method for performing data transfer implemented in a computer system comprising:

a) transmitting a request for data using User Datagram Protocol;

b) receiving a response to the request for data using the User Datagram Protocol, the response comprising a portion of the requested data that fits in a User Datagram Protocol packet and an indication of an amount of additional data that is available; and

c) transmitting a number of requests for additional data using the User Datagram Protocol, the number of requests based on the amount of additional data that is available.

24. The method of claim 23, wherein the transmitted request for data includes a domain.

25. The method of claim 24, wherein the transmitted request for data comprises a lookup request for a domain sent to a Domain Name Server Blacklist/Real-time Blackhole List.

26. The method of claim 23, wherein the response further comprises a pseudo-Internet Protocol address.

27. The method of claim 26, wherein the pseudo-Internet Protocol address comprises the indication of the amount of additional data that is available.

28. The method of claim 27, wherein the request for additional data comprises a pseudo-domain indicating the amount of additional data that is available.