Communication control system, communication control method, and relay device

A communication control and relay device technology, applied in transmission systems, digital transmission systems, instruments, etc., can solve the problem of not wanting to establish a TCP connection between the client and the relay device, generate a relay device, and restrict the use of relay device resources And other issues
CN1669010AInactive Publication Date: 2005-09-14NTT DOCOMO INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NTT DOCOMO INC
Publication Date
2005-09-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

An object of the present invention is to reduce a load on the resource of a relay device (2) and to reduce the data-amount charging on a client, when communications are performed between a client (1) and a server (3). A communication control system according to the present invention includes: an establishment holder (66) configured to hold a response signal from being transmitted from the client-side connection terminal (7) to the client (1), when a client-side connection terminal (7) receives a connection request signal from the client (1); a decider (64) configured to detect a connection state of a server-side connection terminal (8) in response to the connection request signal, and to decide whether or not a connection can be established between the server-side connection terminal (8) and the server (1); and a relay processor (63) configured to transmit the response signal held by the establishment holder (66) and to establish communications between the client (1) and the server (3) so as to perform relay processing, depending on a result of decision made by the decider (64).
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Description

technical field

[0001] The present invention relates to a communication control system, a communication control method, and a relay device that control (digital) data communication between a server and a client through a communication network such as the Internet. Background technique

[0002] At present, in a communication network such as the Internet, when a relay device that relays data between a client and a server receives a connection request signal (TCP connection establishment request signal) of a communication protocol such as TCP sent by the client, it does not Regardless of the state of the server to be connected, a TCP connection is unconditionally established between the client and the relay device, and a TCP connection establishment request is sent to the relay destination server to attempt to establish a TCP connection.

[0003] Figure 5 and Figure 6 The method for establishing a TCP connection using the existing relay device 12 is shown. like Figure 5 an...

Claims

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