SYSTEM, METHOD AND PROGRAM FOR MANAGING FILE DOWNLOADS

• US 20080147876A1
• Filed: 12/19/2006
• Published: 06/19/2008
• Est. Priority Date: 12/19/2006
• Status: Active Grant

• Current Assignee: Kyndryl Incorporated (Kyndryl Holdings, Inc.)
• Original Assignee: International Business Machines Corporation
• Inventors: Campbell, Daniel Allen, Simmons, John Bradley, Pryor, Robert Franklin
• Granted Patent: US 9,229,933 B2
• Time in Patent Office: Days
• US Class Current: 709/232
• CPC Class Codes: G06F 16/93 Document management systems
• 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 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04L 69/28 Timers or timing mechanisms used in protocols
• CPC Class Codes: H04W 4/02 Services making use of location information

Abstract

System, method and program for managing download of a file. A current request to establish a session is received. In the session, there is a request to download the file beginning at a specified location after a start of the file. The current request does not specify a fixed length of the requested download. A length of the file to be downloaded is estimated based on prior requests to download the file beginning at other respective locations. In response to the current request, the estimated length of the file is downloaded beginning at the specified location. In response to downloading the estimated length of the file beginning at the specified location, the download of the file is suspended for a time window. If the session corresponding to the current request is not terminated within the time window, then download of the file is automatically resumed following the length in further response to the current request. If the session corresponding to the current request is terminated within the time window, then download of the file is not automatically resumed following the length in further response to the current request.

Claims

1. A method for managing download of a file, said method comprising the steps of:

receiving a current request to establish a session and in said session, download said file beginning at a specified location after a start of said file, said current request not specifying a fixed length of said requested download;

estimating a length of said file to be downloaded based on prior requests to download said file beginning at other respective locations;

in response to said current request, downloading said length of said file beginning at said specified location, and in response to downloading said length of said file beginning at said specified location, suspending said download of said file for a time window, and

if the session corresponding to said current request is not terminated within said time window, then automatically resuming download of said file following said length in further response to said current request, and

if the session corresponding to said current request is terminated within said time window, then not automatically resuming download of said file following said length in further response to said current request.

2. A method as set forth in claim 1 wherein said step of estimating a length of said file to be downloaded is based on a difference between successive download start locations in respective download requests.

3. A method as set forth in claim 1 further comprising the step of determining said time window based at least in part on a previous request to establish a session and in said session, download said file beginning at another location, and (a) measuring an approximate time between receipt of said previous request and termination of said session, or (b) measuring an approximate time between completion of download of said length of said file beginning at said other location and termination of said session.

4. A system for managing download of a file, said system comprising:

means for receiving a current request to establish a session and in said session, downloading said file beginning at a specified location after a start of said file, said current request not specifying a fixed length of said requested download;

means for estimating a length of said file to be downloaded based on prior requests to download said file beginning at other respective locations;

means, responsive to said current request, for downloading said length of said file beginning at said specified location, and in response to downloading said length of said file beginning at said specified location, suspending said download of said file for a time window, and

means, responsive to the session corresponding to said current request not being terminated within said time window, for automatically resuming download of said file following said length in further response to said current request, and

means, responsive to the session corresponding to said current request being terminated within said time window, for not automatically resuming download of said file following said length in further response to said current request.

5. A system as set forth in claim 4 wherein said means for estimating a length of said file to be downloaded bases said estimation on a difference between successive download start locations in respective download requests.

6. A system as set forth in claim 4 further comprising means for determining said time window based at least in part on a previous request to establish a session and in said session, download said file beginning at another location, and (a) measuring an approximate time between receipt of said previous request and termination of said session, or (b) measuring an approximate time between completion of download of said length of said file beginning at said other location and termination of said session.

7. A computer program product for managing download of a file, said computer program product comprising:

a computer readable media;

first program instructions to receive a current request to establish a session and in said session, download said file beginning at a specified location after a start of said file, said current request not specifying a fixed length of said requested download;

second program instructions to estimate a length of said file to be downloaded based on prior requests to download said file beginning at other respective locations;

third program instructions, responsive to said current request, to download said length of said file beginning at said specified location, and in response to download of said length of said file beginning at said specified location, suspend said download of said file for a time window, and

fourth program instructions, responsive to the session corresponding to said current request not being terminated within said time window, to automatically resume download of said file following said length in further response to said current request, and

fifth program instructions, responsive to the session corresponding to said current request being terminated within said time window, to not automatically resume download of said file following said length in further response to said current request; and

wherein

said first, second, third, fourth and fifth program instructions are stored on said media in functional form.

8. A computer program product as set forth in claim 7 wherein said second program instructions bases the estimation of said length on a difference between successive download start locations in respective download requests.

9. A computer program product as set forth in claim 7 further comprising sixth program instructions to determine said time window based at least in part on a previous request to establish a session and in said session, download said file beginning at another location, and (a) measure an approximate time between receipt of said previous request and termination of said session, or (b) measure an approximate time between completion of download of said length of said file beginning at said other location and termination of said session;

and wherein

said sixth program instructions are stored on said media in functional form.