Server device and communication system
First Claim
Patent Images
1. A server device comprising:
- means for accepting a transmission control protocol connection request from a data management device, holding a transmission control protocol connection, and receiving index information of data managed by the data management device using the held transmission control protocol connection;
means for transmitting the index information to a client device; and
means for acquiring, when receiving an access request from the client device according to the index information for accessing the data managed by the data management device, designated data from the data management device through the held transmission control protocol connection and transmitting the acquired data to the client device.
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Abstract
A data management device is provided in a Local Area Network inside a firewall, and a server is provided in a Wide Area Network outside the firewall. When the data management device carries out a TCP connection request to the server and a TCP connection is established, the data management device transmits index information to the server. The established TCP connection is held. The client device acquires the index information from the server, and carries out a file access request to the server according to the index information. The server uses the held TCP connection to acquire a file from the data management device, and transmits the file to the client device.
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Citations
12 Claims
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1. A server device comprising:
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means for accepting a transmission control protocol connection request from a data management device, holding a transmission control protocol connection, and receiving index information of data managed by the data management device using the held transmission control protocol connection; means for transmitting the index information to a client device; and means for acquiring, when receiving an access request from the client device according to the index information for accessing the data managed by the data management device, designated data from the data management device through the held transmission control protocol connection and transmitting the acquired data to the client device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A communication system comprising a data management device, a server device, and a client device,
wherein the data management device including: -
means for storing and managing data; and means for requesting a transmission control protocol connection to a server device; the server device including; means for accepting a transmission control protocol connection request from the data management device, holding a transmission control protocol connection, and receiving index information of data managed by the data management device using the held transmission control protocol connection; and means for transmitting the index information to the client device, the client device including means for transmitting an access request for the data managed by the data management device according to the index information to the server device, wherein the server device further includes means for acquiring, when receiving an access request from the client device for accessing the data managed by the data management device, designated data from the data management device through the held transmission control protocol connection and transmitting the acquired data to the client device. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification