KR100261861B1 - Method for unifying access to multi-servers using ya-http - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a multi-server approach unification method.

2. The technical problem to be solved by the invention

The present invention provides a method for unifying multi-server access using an alternative hypertext transfer protocol that improves security management when expanding to an environment such as an extranet and user management in an environment such as an intranet having a plurality of web servers. To do so.

3. Summary of Solution to Invention

The present invention includes a first step in which an engine of a web server analyzes a request message from a web client; A second step of checking whether the request message is an alternative hypertext transfer protocol message and converting the engine into a hypertext transfer protocol message and transmitting the converted message to another web server; Transmitting, by the other web server, the corresponding resource to the web server in response to the request message; And a fourth step of the web server transmitting the resource and response message to the web client.

4. Important uses of the invention

The present invention is used in a web-based client-server environment.

Description

Unification of Multiserver Access Using Alternative Hypertext Transfer Protocol

The present invention relates to a multi-server approach unification method using an alternative hypertext transfer protocol that utilizes resources of another web server through a single web server in a web-based environment.

1 is a block diagram of a conventional web client and web server using HTTP.

As shown in the figure, the web client 101 sends a Hypertext Transfer Protocol (hereinafter referred to as "HTTP") message (for example, GET http://www.kt.co.kr/). intro.html HTTP / 1.1) to the web server 102, the connection is established after the HTTP engine of the web server 102 obtains the requested resource (i.e. intro.html) and sends it to the web client 101. Is released. Also, if the web client 101 wants a resource request for another web server 103, a new connection is established between the web server 103 and the web client 101.

In addition, the protocol of the web is based on the request / response method as follows. That is, the connection is selected by the web client 101 to the web server 102, and a port 80 of the Transmission Control Protocol / Internet Protocol (TCP / IP) is usually used. When the web client 101 sends a request message to the web server 102, the message type is transmitted along with the request type, uniform resource locator (hereinafter referred to as "URL"), and protocol version information. . In response to the request of the web client 101, the web server 102 responds to the web client 101 whether the request processing is successful and the contents of the message related to the request. The connection is disconnected due to a user request, timeout, program failure, or the like.

The operation as described above is defined by a communication protocol called HTTP. That is, when a user designates a URL using the web client 101, a request is made to the web server by HTTP, and the web server 102 displays the contents of the document with respect to the requested URL in a hypertext markup language. ) (Hereinafter referred to as "HTML") to the web client 101.

The conventional URL is composed of an access protocol for a desired document, a host name of a web server, path information, and the like, and has a format such as "URL = protocol: //host.name/path/document". This URL request is sent to the web server as an HTTP message, which has the following format:

HTTP-message = Method Request-URL HTTP-Version

[Message-headers]

[Message-body]

As described above, "Method" indicates a method of performing a resource indicated by "Requst-URL", and includes "GET" and "POST". Also, when the web client requests a document called "intro.html" in the web server "www.kt.co.kr", for example, "GET http://www.kt.co.kr/ intro.html HTTP / 1.1 ".

Therefore, as the use of the Internet has exploded due to the development of the World Wide Web (WWW) technology, many companies and universities have been actively building intranets that apply the web technology to the internal computer network. In order to use all of the web servers in the multi-server environment in which each server operates, the web client must directly access each web server, so there is a problem that security and management are not easy.

Accordingly, the present invention devised to solve the above problems is an alternative to improve security management when extending to an environment such as an extranet with unification of user management in an environment such as an intranet having a plurality of web servers. The object of the present invention is to provide a method for unifying multiserver access using the hypertext transfer protocol.

1 is a block diagram of a conventional web client and web server using HTTP.

2 is a configuration example of a web client and a web server using YA-HTTP of the present invention.

3 is a temporary flowchart of a multi-server access unification method using YA-HTTP according to the present invention.

* Explanation of symbols for main parts of the drawings

101, 201: web client 102, 103, 202, 203: web server

A method of the present invention for achieving the above object comprises: a multi-server access unification method applied to a web-based client-server environment, comprising: a first step of an engine of a web server analyzing a request message from a web client; A second step of checking whether the request message is an alternative hypertext transfer protocol message, converting the engine of the web server into a hypertext transfer protocol message, and transmitting the converted message to another web server; Transmitting, by the other web server, a corresponding resource to the web server in response to the request message; And a fourth step in which the web server transmits a corresponding resource and response message to the web client.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exemplary configuration diagram of a web client and a web server using YA-HTTP according to the present invention.

As shown in the figure, a web server 202 with a YA-HTTP engine sends a Yet Another-Hypertext Transfer Protocol (hereinafter referred to as "YA-HTTP") message in the web client 201. In this case, the YA-HTTP engine of the web server 202 interprets the message, re-requests the requested resource from the other web server 203, and delivers the requested resource to the web client 201.

Also, in order to be able to access the resources of another web server through one web server, the YA-URL and YA-HTTP message formats are defined as follows.

YA-URL = ya-protocol: //ya-host.name＼＼host.name/path/document

YA-HTTP-message = YA-Method YA-URL YA-HTTP-Version

[Message-headers]

[Message-body]

When "ya.http.com" is referred to as the host name of the YA-HTTP server, the document requested by "GET http://www.kt.co.kr/intro.html HTTP / 1.1" is displayed. The YA-HTTP message that is imported through is like "YA-GET ya-http: //ya.http.com" www.kt.co.kr/intro.html YA HTTP / 1.1. Process for "YA-GET ya-http: //ya.http.com" www.kt.co.kr/intro.html/YA-HTTP/1.1 "to help understand the working of YA-HTTP In order, they are as follows. Let the host name of the web server 202 be "ya.http.com" and the host name of the web server 203 be "www.kt.co.kr".

First, the YA-HTTP message from the web client 201 to the web server 202, that is, "YA-GET ya-http: //ya.http.com" www.kt.com/intro.html YA HTTP /1.1 ".

The web server 202 then interprets this message and requests the web server 203 as a message such as "GET http://www.kt.co.kr/intro.html HTTP / 1.1".

The web server 203 then loads the "intro.html" document and sends a response message to the web server 202.

Thereafter, the web server 202 adds YA-HTTP related information to " intro.html " and delivers it to the web client 201, thereby terminating the response to the first YA-HTTP message.

Thus, in an intranet environment with multiple web servers, using a YA-HTTP web server not only unifies management of intranet users to a YA-HTTP web server, but only one YA-HTTP server when extended to an extranet. It can be disclosed to the outside world for efficient security management.

In addition to simply passing resources from multiple servers to clients, applications on YA-HTTP web servers can be applied to resources on other web servers and sent to web clients. In other words, an application on a single web server can be applied equally to all resources on multiple servers. For example, in order to apply the English translation program "eng2kor.cgi" in web server 4 (6) to "intro.html" in web server 203, the web client 201 may be, for example, "ya- http://ya.http.com/cgi-bin/eng2kor.cgi＼＼www.kt.co.kr/intro.html "(where ya.http.com represents a web server 202 and www. kt.co.kr may request a YA-URL such as a host name of the web server 203).

3 is a flow diagram of one embodiment of a multi-server access unification method using YA-HTTP according to the present invention.

As shown in the figure, the web server waits for a request message from the web client (301), and when the web client sends a request message to the web server (302), the YA-HTTP engine of the web server analyzes the request message ( 303).

Thereafter, it is determined whether the request message is YA-HTTP (304), and if it is not YA-HTTP, the web server processes the HTTP message (305), and the web server transmits a response message together with the resource requested by the web client (310). .

On the other hand, it is determined whether the request message is YA-HTTP (304), and if YA-HTTP, the YA-HTTP engine converts the YA-HTTP message to plain HTTP (306), and the web server converts the converted general HTTP request message to the web. Send to the server (307).

Thereafter, when the web server waits for the processing status of another web server (308), and the other web server transmits the corresponding resource to the web server in response to the resource request message (309), the web server responds with the resource requested by the web client. Send a message (310).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

Therefore, the present invention as described above, an environment such as an intranet having a plurality of web servers by accessing a plurality of web servers as a single web server without violating the protocol for HTTP and URL, which is a conventional protocol in a web-based environment It is possible to maintain efficiency in security management when expanding to an environment such as an extranet with unified management of users in a single network, and the application and application of a single web server to the resources of multiple web servers are equally extended and efficient. There is an effect to improve.

Claims (2)

A multi-server approach unification method applied to a web-based client-server environment, comprising: a first step of an engine of a web server analyzing a request message from a web client; A second step of checking whether the request message is an alternative hypertext transfer protocol message, converting the engine of the web server into a hypertext transfer protocol message, and transmitting the converted message to another web server; Transmitting, by the other web server, a corresponding resource to the web server in response to the request message; And a fourth step in which the web server transmits a corresponding resource and response message to the web client. The hyper hyper transfer method of claim 1, further comprising a fifth step of the web server processing the hypertext transfer protocol message and transmitting a corresponding resource and response message to the web client if the request message is a hypertext transfer protocol message. A method for unifying multiserver access using text transfer protocol.