G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 17/30 (2006.01) H04L 29/08 (2006.01)
Patent
CA 2426675
Near real-time transfer of a datafile from a first computer to a second computer over a computer network. These computers are operated such that on the first computer a server side script, responsive to a download request from the second computer, operable to launch an httpstreamproducer and to read and write data over the computer network. The httpstreamproducer is operable to read a designated source file and simultaneously write data from the source file into a return-data-buffer connected to the server-side script and a read- while-write mechanism allowing the httpstreamproducer to read data from the designated source file while the designated source file is being written. The second computer has a transaction handler class, each instance of which is operable to read and write data produced by an httpstreamproducer over the computer network and to write blocks of data to a destination simultaneously with receiving data from the computer network.
L'invention concerne le transfert en temps quasi r~el d'un fichier de donn~es d'un premier ordinateur vers un second ordinateur ~ travers un r~seau informatique. Ces ordinateurs sont exploit~s de telle manire que dans le premier ordinateur un script cÙt~-serveur r~agit ~ une demande de t~l~chargement en provenance du second ordinateur, et permet le lancement d'un logiciel de transfert en continu (<= httpstreamproducer >=) et la lecture et l'~criture des donn~es par l'interm~diaire du r~seau informatique. Le logiciel de transfert en continu permet de lire un fichier source d~sign~ et d'~crire simultan~ment les donn~es de ce fichier source dans un tampon de retour de donn~es connect~ avec le script cÙt~-serveur. Un m~canisme de lecture-~criture simultan~es permet au logiciel de transfert en continu de lire des donn~es provenant de fichier source d~sign~ pendant l'~criture de ce fichier source. Le second ordinateur comprend une classe de gestionnaires de transaction dont chaque instance permet la lecture et l'~criture des donn~es g~n~r~es par un logiciel de transfert en continu via le r~seau informatique, et l'~criture de blocs de donn~es dans une destination simultan~ment ~ la r~ception de donn~es via le r~seau informatique.
Abney John M. III
Alvarado Juan C.
Schlumberger Canada Limited
Smart & Biggar
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