Concurrent ftp read and write

• US 20060075064A1
• Filed: 09/30/2004
• Published: 04/06/2006
• Est. Priority Date: 09/30/2004
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Keohane, Susann Marie, McBrearty, Gerald Francis, Shieh, Johnny Meng-Han, Murillo, Jessica Kelley, Mullen, Shawn Patrick
• Application Number:
  US10/955,181
• Publication Number:
  US 20060075064A1
• Time in Patent Office: Days
• US Class Current: 709/217
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/62 Establishing a time schedule for servicing the requests
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

Methods, systems, and media are disclosed for concurrent ftp transfer of a file. In one embodiment, the method for concurrent ftp reading and writing includes uploading a file by a first computer system in communication with an ftp site, such as a server, having an ftp program. Further, the method includes receiving, by the ftp site, a plurality of file segments of the file during the uploading. Further still, the method includes downloading, by a second computer system in communication with the ftp site, all of the plurality of file segments, whereby the downloading may begin during such receiving, i.e., before complete upload of the file. An intermediary ftp program associated with the ftp daemon of the ftp program permits the concurrent reading and writing of the file. Possible implementations of this intermediary ftp program include, for example, into either the ftp daemon or the logical file systems layer.

Claims

1. A method for ftp transfer, the method comprising:

uploading, by a first computer system, a file to an ftp site;

receiving, by the ftp site, the file in file segments during the uploading; and

downloading, by a second computer system, the file segments during the receiving.

2. The method of claim 1, further comprising authenticating, by the ftp site, access for the file before the uploading or the downloading.

3. The method of claim 1, wherein the uploading and the downloading comprises connecting via one or more networks to the ftp site.

4. The method of claim 1, wherein the receiving and the downloading comprises managing, by an intermediary program associated with an ftp daemon, each of the file segments available for the downloading.

5. The method of claim 1, wherein the uploading and the downloading comprises reading and writing by an ftp daemon associated with a server on the ftp site.

6. The method of claim 1, wherein the downloading comprises querying by an ftp daemon for the file segments of the file.

7. The method of claim 6, wherein the querying comprises repeating the querying, after expiration of a finite period of time, for any of the file segments not received by the ftp daemon for the downloading and after the querying.

8. A system for ftp transfer, the system comprising:

a first computer system having a file and in communication with an ftp site;

a second computer system in communication with the ftp site; and

an ftp program, on the ftp site, for receiving an upload of the file in file segments, and for permitting a download, to the second computer system, of the file to begin after receiving, by the ftp site, a first of the file segments.

9. The system of claim 8, wherein the first computer system and the second computer system are in network communication with the ftp site.

10. The system of claim 8, wherein the ftp site comprises a URL associated with an ftp server.

11. The system of claim 8, wherein the ftp program comprises an ftp intermediary program for managing the file segments received by the upload and available for the download.

12. The system of claim 11, wherein the intermediary program is implemented into an ftp daemon of the ftp program.

13. The system of claim 11, wherein the intermediary program is implemented into a logical file systems layer that communicates with the ftp program.

14. A machine-accessible medium containing instructions, which when executed by a machine, cause the machine to perform operations for ftp transfer, comprising:

uploading, by a first computer system, a file to an ftp site;

receiving, by the ftp site, the file in file segments during the uploading; and

downloading, by a second computer system, the file segments during the receiving.

15. The machine-accessible medium of claim 14, wherein the instructions further comprise instructions to perform operations for authenticating, by the ftp site, access for the file before performing the uploading or the downloading.

16. The machine-accessible medium of claim 14, wherein the instructions for uploading and downloading comprises instructions for connecting via one or more networks to the ftp site.

17. The machine-accessible medium of claim 14, wherein the instructions for receiving and downloading comprises instructions for managing, by an intermediary program associated with an ftp daemon, each of the file segments available before performing the instructions for the downloading.

18. The machine-accessible medium of claim 14, wherein the instructions for uploading and downloading comprises instructions for reading and writing by an ftp daemon associated with a server on the ftp site.

19. The machine-accessible medium of claim 14, wherein the instructions for downloading comprises instructions for querying, by an ftp daemon, for the file segments of the file.

20. The machine-accessible medium of claim 19, wherein the instructions for querying comprises instructions for repeating the querying, after expiration of a finite period of time, for any of the file segments not received by the ftp daemon for the downloading and after the querying.