METHOD AND SYSTEM FOR ACCESSING DATA BY A CLIENT FROM A SERVER

• US 20140280465A1
• Filed: 03/12/2013
• Published: 09/18/2014
• Est. Priority Date: 03/12/2013
• Status: Active Grant

• Current Assignee: Cubic Digital Intelligence, Inc. (Cubic Corporation)
• Original Assignee: Pixia Corp. (Cubic Corporation)
• Inventors: Pakula, Scott L., Thakkar, Rahul C.
• Granted Patent: US 9,178,931 B2
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]

Abstract

A system and a method for accessing data by a client computer system from a server computer system, the client computer system including one or more processors configured to execute computer program modules, are described. The method includes receiving, by the client computer system from an application program, a read request to read at least a portion of a data file; sending, by the client computer system to the server computer system, a request for exact data corresponding to the at least the portion of the data file requested by the application program in the read request; receiving, by the client computer system from the server computer system, a response to the request including the exact data requested by the client computer system; and providing, by the client computer system to the application program, the exact data in response to the read request.

Claims

1. A method for accessing data by a client computer system from a server computer system, the client computer system including one or more processors configured to execute computer program modules, the method comprising:

receiving, by the client computer system from an application program, a read request to read at least a portion of a data file;

sending, by the client computer system to the server computer system, a request for exact data corresponding to the at least the portion of the data file requested by the application program in the read request;

receiving, by the client computer system from the server computer system, a response to the request including the exact data requested by the client computer system; and

providing, by the client computer system to the application program, the exact data in response to the read request.

2. The method according to claim 1, further comprising receiving, by the client computer system, a memory buffer from the read request for holding the response to the request including the at least the portion of the data file requested by the application program in the read request.

3. The method according to claim 2, wherein receiving the response comprises receiving, by the client computer system from the server computer system, the exact data requested into the memory buffer provided by the read request.

4. The method according to claim 1, wherein sending the request comprises sending, by the client computer system to the server computer system, the request for the exact data through a network.

5. The method according to claim 4, wherein the network includes a local area network (LAN), a wide area network (WAN), the internet, or any combination thereof.

6. The method according to claim 1, wherein sending the request for exact data comprises sending, by the client computer system to the server computer system, an HTTP WebDAV GET byte-range request.

7. The method according to claim 1, wherein the client computer system and the server computer system communicate using the HTTP WebDAV communication protocol.

8. The method according to claim 1, wherein the exact data requested by the client computer system is not stored in a cache.

9. The method according to claim 1, wherein receiving the read request includes receiving a POSIX pread( ) function call.

10. The method according to claim 1, wherein the client computer system and the server computer system are the same computer system.

11. The method according to claim 1, further comprising deleting or erasing, by the client computer system, the exact data in the read request.

12. The method according to claim 1, further comprising awaiting for a next read request to read at least a portion of the same data file or another data file.

13. A client computer system for accessing data from a server computer system, the client computer system comprising one or more processors configured to:

receive, from an application program, a read request to read at least a portion of a data file;

send, to the server computer system, a request for exact data corresponding to the at least the portion of the data file requested by the application program in the read request;

receive, from the server computer system, a response to the request including the exact data requested; and

provide, to the application program, the exact data in response to the read request.

14. The client computer system according to claim 13, wherein the one or more processors are configured to receive a memory buffer from the read request for holding the response to the request including the at least the portion of the data file requested by the application program in the read request.

15. The client computer system according to claim 14, wherein the one or more processors are configured to receive, from the server computer system, the exact data requested into the memory buffer provided by the read request.

16. The client computer system according to claim 13, wherein the one or more processors are configured to send, to the server computer system, the request for the exact data through a network.

17. The client computer system according to claim 16, wherein the network includes a local area network (LAN), a wide area network (WAN), the internet, or any combination thereof.

18. The client computer system according to claim 13, wherein the one or more processors are configured to send, to the server computer system, an HTTP WebDAV GET byte-range request.

19. The client computer system according to claim 13, wherein the one or more processors are configured to delete or erase the exact data in the read request.

20. The client computer system according to claim 13, wherein the one or more processors are configured to await for a next read request to read at least a portion of the same data file or another data file.