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Updating transferred files

  • US 9,021,057 B2
  • Filed: 09/14/2012
  • Issued: 04/28/2015
  • Est. Priority Date: 05/18/2000
  • Status: Expired due to Term
First Claim
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1. A method comprising:

  • receiving a file by a second device from a first client device, a copy of the file being stored on the first client device, wherein the second device includes at least one processor;

    establishing, by the second device, a connection with the first client device;

    determining, using the at least one processor, when the copy of the file stored on the first client device was last modified based on information received from the first client device;

    determining, using the at least one processor, that the copy of the file is incomplete or outdated based on when the copy of the file was last modified;

    sending, by the second device, a request for a transfer of additional or updated portions of the copy of the file, the request identifying the additional or updated portions; and

    receiving, by the second device, the transfer from the first client device with the additional or updated portions of the copy of the file via a direct socket connection, wherein the additional or updated portions of the copy of the file comprises portions of the copy of the file updated since the time the file was last updated.

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