JP2000020415A - Www server proxy, www browser proxy and www system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable efficient transfer to all files by dealing with trouble, which occurs because of call setting in the transfer of a file containing a lot of contents, conventionally only concerning data stored in a WWW cache or information which is temporarily accessed by a certain user and stored in a proxy for a fixed period. SOLUTION: This WWW system is provided with a WWW server proxy 2b and a WWW browser proxy 1b and without adding any function to the existent WWW server and WWW browser, the file requested by the WWW browser and contents to be referred to from the relevant file are simultaneously transferred between the WWW server proxy 2b and WWW browser proxy 1b through a network (internet 3) so that call setting is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a WWW system for accessing a server from a client side using a WWW (World Wide Web) browser, and more particularly to a WWW server proxy and WWW suitable for reducing traffic on a network. It relates to a browser proxy and a WWW system.

[0002]

2. Description of the Related Art In recent years, HTML (Hyper Text Markup Language) or VRM
Hypertext (file) is constructed using L (Virtual Reality Modeling Language) or the like, and HTTP
A WWW system that receives a file from a WWW server on a server side and displays the received file using a WWW browser on a client side according to (Hyper Text Transfer Protocol) is widely known.

[0003] There is a homepage as a hypertext in the WWW system. In such a homepage or the like, an inline image is pasted into a page using an <IMG SRC> tag, or <AH
REF> tag (Uniform Resource Locato
Image display and audio output in a separate window during download based on the specification of r) are possible. The information read and displayed by the WWW browser together with such a file of the homepage or the like is hereinafter referred to as content.

As described above, in the WWW system, W
When a file such as a homepage is read and displayed by a WWW browser, the content included in the file is transferred from the WWW server together with the file. In this content transfer, WW
A request is made from the W browser to the WWW server, and a call is set up on the network for each request. Therefore, in reading and transferring a file containing a large amount of content, a request for call setting corresponding to each content enters a waiting queue of the WWW server or overflows the waiting queue. As a result, it takes a long time to display, or the content cannot be received from the WWW server.

In the prior art, the WWW browser addresses such a problem by storing the data in a cache, thereby increasing the WWW throughput. Further, the throughput is increased by installing a proxy having a cache between the WWW browser and the WWW server. For example, a WWW page once accessed by a user with a WWW browser is stored in a proxy for a certain period of time, and when another user accesses the same WWW page, the information stored in the proxy is returned. . This allows the WW to be
There is no need to make a request to the W server, and the load on the network can be reduced.

[0006]

The problem to be solved in the prior art is that limited information such as data stored in a cache or information that a certain user accesses once and stores in a proxy for a certain period of time is used. This is a point that the throughput is improved only for the other information, and other information cannot be dealt with. SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art and to provide a WWW server proxy, a WWW browser proxy, and a WWW system that enable efficient transfer of all files.

[0007]

In order to achieve the above object, a WWW server proxy, a WWW browser proxy, and a WWW system of the present invention provide, via a network, a file requested by a WWW browser and content referred to from the file. , WWW server proxy and W
The configuration is such that transfer is performed collectively with the WW browser proxy. In this way, for example, by collectively transferring contents referred to by one HTML file, call setting can be reduced and WWW throughput can be improved. In addition, such files and contents can be transferred collectively without adding any function to the existing WWW server and WWW browser.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a first embodiment of the configuration according to the present invention of the WWW system of the present invention. 1, reference numeral 1 denotes a CPU (Central Pr
computer device (hereinafter, referred to as a "client") that includes a processing unit and a random access memory (RAM), a read only memory (ROM), and performs client processing in a server-client system by computer processing using a storage program. Server processing by computer processing similar to client 1
A computer device that performs server processing in the client system (hereinafter, referred to as “server”) 3 is the Internet.

The client 1 has a WWW browser (referred to as "browser section" 1a) in the figure, and the server 2 has a WWW browser.
A W server (described as "WWW server unit" in the figure) 2a is provided, and a WWW browser 1a is provided by HTTP.
, A file corresponding to the request and the content included in the file are transferred from the WWW server 2a via the Internet 3.

In the WWW system of the present embodiment, a WWW browser proxy (described as “Proxy section” 1b in the figure) 1b is used for the client 1, and a WWW browser proxy is used for the server 2.
WW server proxy (described as "Proxy part" in the figure)
2b are provided respectively, and the WWW browser proxy 1b and the WWW server proxy 2b provide
The batch transfer information 4 including the file requested from the W browser 1a and the content included in the file is
The data is transferred collectively in the format shown in the figure. As a result, the number of call settings on the Internet can be reduced to avoid an increase in traffic.

That is, the WWW server proxy 2b
A reception / storage section 2c for sequentially requesting and receiving a file requested from the WWW browser 1a and contents referred to from this file to the WWW server 2a, and storing them collectively, and the reception / storage section 2c collectively A transmission unit 2d that collectively transfers the stored files and contents to the requesting WWW browser 1a via the Internet 3.
And the WWW browser proxy 1b
A reception / storage unit 1c for receiving and storing files and contents transferred from the W server proxy 2b via the Internet 3 in a lump, and the reception / storage unit 1c
And a transmission unit 1d for reading a file and a content corresponding to a request from the WWW browser 1a and transmitting the read file and content to the WWW browser 1a.
Between the Internet and the WWW server proxy 2b
, The file requested by the WWW browser 1a and the batch transfer information 4 including the content included in the file are transferred collectively.

Further, the transmitting unit 2d of the WWW server proxy 2b encodes information to be transferred collectively, encrypts and compresses data, and performs WWW browser proxy 1b.
Decrypts the encrypted / compressed batch transfer information 4 by the reception / storage unit 1c. As a result, transfer efficiency and system reliability can be improved.

The WWW server proxy 2b is provided with a specification unit 2e for specifying the range and type of content referred to from the file requested by the WWW server 2a in the reception / storage unit 2c based on preset information. And
The WWW server proxy 2b can limit the contents to be transferred together with the file to contents within a preset range or contents of a preset type.

The format of the batch transfer information 4 to be batch-transferred as described above has a configuration in which each content including a file is collected in one header section in which information such as a destination, a source, and the number of contents are registered. Has become. Each content includes attributes such as a date and a data length, and each content.

The client 1 has a function of the WWW browser 1a requesting a file transfer from the WWW browser proxy 1a, a function of displaying a file sent from the WWW browser proxy 1a, and a function of the WWW browser proxy 1a from the WWW browser 1a. Request of server 2 WW
A function to transfer the data to the W server proxy 2b is provided. In addition, the WWW server 2a transmits the file to the server 2 according to the request from the WWW server proxy 2b.
A function to transfer using P is provided.

The operation of the WWW browser proxy 1a and the WWW server proxy 2b will be described below with reference to FIGS. FIG. 2 is a flowchart showing an example of the processing operation of the WWW server proxy in FIG. 1 according to the present invention. The WWW server proxy 2b of the server 2 in FIG.
a, and checks whether a file corresponding to the request from the WWW browser proxy 1a exists in the reception / storage unit 2c (step 201).

WWW browser proxy 1 only when not available
is transmitted to the WWW server 2a, and the received file is stored in the reception / storage unit 2c in response to the request.
(Step 202). Then, it interprets the file stored in the reception / storage unit 2c and checks whether or not there is another content to be referenced from the file (step 203).

If so, it is further confirmed whether or not the content is in the receiving / storing section 2c.
The content not in c is requested to the WWW server 2a, and the received file is stored in the reception / storage unit 2c (step 204). The process of step 204 is performed on all contents referenced from the file (step 2).
05).

When all the contents to be referred to from the file have been prepared, the transmitting unit 2d transmits the WWW browser proxy 1 of the client 1 in a batch transfer format.
a (step 206), and waits for the next request (step 207). If there is no content to be referenced from the file in step 203, the file in the reception / storage unit 2c is stored in the W
Send to the WW browser proxy 1a (step 208),
It waits until the next request is made (step 207).

FIG. 3 is a flowchart showing a processing operation example of the WWW browser proxy in FIG. 1 according to the present invention. The WWW browser proxy 1a of the client 1 in FIG. 1 monitors a request from the WWW browser 1a, and receives and stores a request from the WWW browser 1a.
(Step 301).

If not, the request is sent to the WWW server 2
It transmits to the server proxy 2b, waits for a response (step 302), and checks whether or not the received format is a batch transfer format (step 303). In the case of the batch transfer format, the contents included in the batch transfer format are stored in the reception / storage unit 1c (step 304). If the format is not the batch transfer format, the received file is stored in the storage unit 1c (step 30).
7).

The file corresponding to the request is retrieved from the reception / storage unit 1c, transmitted to the WWW browser 1a (step 305), and waits for the next request (step 306). If the request is found in the reception / storage unit 1c in the process of step 301, the target file is extracted from the reception / storage unit 1c and transmitted to the WWW browser 1a (step 305) until the next request is made. stand by
(Step 306).

FIG. 4 is an explanatory diagram showing an example of the processing operation based on the information of the specifying unit of the WWW server proxy in FIG. Identifying unit 2 of WWW server proxy 2b in FIG.
In e, the range and type of content referred to from the file requested from the WWW server 2a in the receiving / storage unit 2c are set in advance. Based on this information, the WWW server proxy 2b limits the contents to be transferred together with the file to contents within a predetermined range or contents of a predetermined type.

For example, in FIG. 4, reference numeral 41 denotes a WWW homepage as a file requested to the WWW server 2a. The WWW homepage 41 contains contents including images, sounds, and moving images. Other WWW pages 42 to 46 linked by such as are included as contents. further,
Each of the WWW pages 42 to 46 also includes contents including images, sounds, and moving images.

When "text" and "image" are set as the type of the content to be referred to in the specifying unit 2e, the WWW server proxy 2b transmits the text body of the WWW home page 41 and the WWW pages 42 to 46. Transfer only image data at once. In the specifying unit 2e, the range of the content to be referred to is “1”.
If "stage" is set, the WWW server proxy 2b
Transfers all WWW pages except the WWW pages 43 and 46 in a lump.

In the example shown in FIG. 1, the WWW browser proxy 1a and the WWW server proxy 2b are provided in the client 1 and the server 2, respectively.
As shown in (1), it is also possible to configure on a computer device different from the client 1 and the server 2.

FIG. 5 is a block diagram showing a second embodiment of the configuration according to the present invention of the WWW system of the present invention. In the WWW system of the present embodiment, a WWW browser proxy that performs a batch transfer process according to the present invention similar to the WWW browser proxy 1a and the WWW server proxy 2b in the WWW system in FIG.
The configuration is such that a proxy (described as “Proxy” in the figure) 50 having a proxy 51 (described as “Proxy” in the figure) 51a and a WWW server proxy (described as “Proxy section on the server side”) 52b in the figure. As described above, a plurality of proxies for performing the batch transfer process can be provided between the client 1 and the server 2.

FIG. 6 is a block diagram showing a third embodiment of the configuration according to the present invention of the WWW system of the present invention. In the WWW system of this example, a WWW browser proxy provided in the client 1 in the WWW system of FIG. 1 (in the figure, referred to as a “client-side Proxy unit”)
1b is provided in a proxy (described as “Proxy” in the figure) 60 composed of another computer device. With such a configuration, the batch transfer from the server 2 can be performed even for a request from the client 61 not having the proxy function.

FIG. 7 is a block diagram showing a fourth embodiment of the configuration according to the present invention of the WWW system of the present invention. In the WWW system of the present example, a WWW server proxy (described as “server-side Proxy” in the figure) 2b provided in the server 2 in the WWW system of FIG. "Prox
y ”) 70). With such a configuration, it is possible to perform a batch transfer to the client 1 even for a request to the server 72 not having the proxy function.

As described above with reference to FIGS. 1 to 7, in the WWW server proxy, the WWW browser proxy and the WWW system of the present embodiment, for example, a proxy on the same computer as the browser and a computer on the same computer as the WWW server One HTML file requested by the browser and the contents referred to from the file are collectively transferred between the above proxies. As a result, the number of call settings can be reduced and the throughput can be improved.

In this example, the existing WWW server and W
At the front of the WW browser, there is a proxy that has the function to transfer the required content in response to the request in a batch.
A WWW system with high throughput can be constructed without adding any function to these existing WWW servers and WWW browsers, and even a server with a large amount of access can transfer files without damaging necessary files. . In particular, this is effective when the throughput of the server is lower than the throughput of the lower layer connecting the server and the client.

The present invention is not limited to the embodiment described with reference to FIGS. 1 to 7, but can be variously modified without departing from the gist thereof. For example, in each embodiment, only one client and one server are shown, but a plurality of clients and servers may be provided. Although one Internet is illustrated as a network, a LAN (Local Area Network) or a WAN (Wide Are
It is also possible to provide a plurality of other networks such as a network).

[0033]

According to the present invention, efficient transfer to all files is possible without being limited to data stored in a conventional cache or information stored once in a proxy for a certain period of time by a certain user accessing the cache. It is.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a configuration according to the present invention of a WWW system of the present invention.

FIG. 2 is a flowchart showing an example of a processing operation of the WWW server proxy in FIG. 1 according to the present invention.

FIG. 3 is a flowchart showing an example of the processing operation of the WWW browser proxy in FIG. 1 according to the present invention.

FIG. 4 is an explanatory diagram showing an example of a processing operation based on information of a specification unit of a WWW server proxy in FIG. 1;

FIG. 5 is a block diagram showing a second embodiment of the configuration according to the present invention of the WWW system of the present invention.

FIG. 6 is a block diagram showing a third embodiment of the configuration according to the present invention of the WWW system of the present invention.

FIG. 7 is a block diagram showing a fourth embodiment of the configuration according to the present invention of the WWW system of the present invention.

[Explanation of symbols]

1: Client, 1a: WWW browser, 1b: WW
W browser proxy, 1c: reception / storage unit, 1d: transmission unit, 2: server, 2a: WWW server, 2b: WWW server proxy, 2c: reception / storage unit, 2d: transmission unit, 2
e: identification part, 3: internet, 4: batch transfer information,
41: WWW homepage, 42 to 46: WWW page, 50: proxy, 51b: WWW browser proxy, 52b: WWW server proxy, 60: proxy,
61: client, 70: proxy, 72: server.

Claims (6)

[Claims] 1. A web server that responds to a request from a WWW browser.
WWW for temporarily storing a file to be transferred by a WWW server and then transferring the file to the WWW browser via a network
A receiving / storing means, which is a server proxy for sequentially requesting and receiving the file requested by the WWW browser and the content referred to by the file from the WWW server, and storing them collectively; Transmitting means for collectively transferring the file and the content stored by the means to the requesting WWW browser via a network.
Server proxy. 2. The WWW server proxy according to claim 1, further comprising means for specifying a range of contents referred to from the file requested by the WWW server in the reception / storage means based on preset information. A WWW server proxy, wherein contents to be transferred together with the file are limited to contents within the preset range. 3. The WWW server proxy according to claim 1, wherein the reception /
The storage means includes means for specifying the type of content referred to from the file requested to the WWW server based on preset information, and the content to be batch-transferred with the file is converted to the content of the preset type. A WWW server proxy characterized by limitation. 4. In response to a request from a WWW browser, W
WWW for receiving a file transferred from a WW server via a network and transferring the file to the WWW browser
A receiving / storing means for receiving and storing the file and the content transferred from the WWW server proxy according to any one of claims 1 to 3 via a network, the file being a browser proxy. And a transmission means for reading out a file and content corresponding to the request from the WWW browser from the reception / storage means, and transmitting the read out file and content to the WWW browser. 5. A WWW system for transferring a file corresponding to a request from a WWW browser from a WWW server via a network, wherein the WWW server proxy according to any one of claims 1 to 3, and 4 is provided via a network, and a file requested by the WWW browser and contents referred to by the file are collectively provided between the WWW server proxy and the WWW browser proxy. A WWW system characterized by transferring. 6. The WWW system according to claim 5, wherein the WWW server proxy encodes the file and the content to be transferred to the requesting WWW browser collectively via a network. A WWW browser proxy having means for decoding the file and the content, which are encoded from the WWW server proxy and transferred collectively via a network.