JP2001344224A - Client-server type cooperating operation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make realizable optimum transaction processing for an electronic commercial transaction or the like on a network capable of applying a general purpose protocol. SOLUTION: A client application 120 opens a port 120a in a client computer and sends an HTTP request including the program name of a server application 132, a client address and the port number of the port 120a to a WWW server 131 through the Internet (arrow 21). The WWW server 131 starts a server application 132 to be a program for specifying the HTTP request (arrow 22). The server application 132 sets up connection with the client port 120a of the client computer specified by the HTTP request (arrow 23). Then communication between the client application 120 and the server application 132 is executed through the connection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a client / server type cooperative operation method suitable for separating a client-side program and a server-side program and performing a cooperative operation via a network to which a general-purpose communication protocol is applied.

[0002]

2. Description of the Related Art In recent years, WWW has been used as a typical application of the Internet, which has been exploding in use.
(World Wide Web) is known. WWW is a mechanism for accessing information on a homepage created on a computer connected to the Internet from a tool (information browsing software) called a browser (Web browser) that also operates on a computer connected to the Internet.

[0003] In the WWW, all homepages are HT
URL (Uniform) defined by a standardized communication protocol called TP (Hyper Text Transfer Protocol)
Resource Locator) address. For this reason, the WWW has an ease of use such that any home page can be easily accessed without knowing the physical information of the computer on the Internet.

[0004] On the other hand, the Internet use form is EC
(E-commerce), from simple information search,
Conventionally, transaction processing that has been performed on a dedicated network is spreading.

However, H applied to the Internet
The TTP (called) protocol is very convenient for specifying a connection partner, but is originally not used for transaction processing because it was originally created for information retrieval. In other words, the HTTP protocol is based on a simple one-request / one-reply process in which a request is sent from a client to a server and then a reply is sent from the server to the client. This is because it requires a session that goes back and forth many times. On the other hand, ordinary client-server processing presupposes a dedicated network, and does not provide a simple address that can access any computer on the Internet like the HTTP protocol.

Here, a client-side program (client application) and a server-side program (server application) are separated from each other for transaction processing on the Internet necessary for EC and the like.
The problem when cooperating via the Internet using the TTP protocol will be described with reference to FIG.

[0007] First, a client application (client application program) 141 (a client computer operating in accordance with it) is converted into a server application (server application program) 145.
When it is necessary to cooperate with the server, an HTTP request including the name of the startup program is sent to the WWW server 143 (on the server computer) as indicated by an arrow 142.

[0008] The WWW server 143 receives the HTTP request from the client application 141,
As indicated by an arrow 144, the designated program is started. Here, the designated program is the server application 145, and therefore, the server application 145 is activated. The server application 145 is most commonly located on a server computer on which the WWW server 143 operates, but may be located on a server computer different from the server computer.

When the server application 145 (according to the server computer) completes the processing, the result is regarded as an HTTP reply and the WWW server 14
3 and is sent to the client application 141 via the same route as the HTTP request from the client application 141 (in the opposite direction to the HTTP request).

As described above, in order for the client application and the server application to cooperate via the Internet, the client (client application) transmits an HTTP request to the WWW server, and the server (server application) transmits the HTTP request to the WWW server. Since it has only a procedure for returning an HTTP reply to the client via the server, that is, based on simple processing of one request / one reply as described above, it is not suitable for transaction processing on the Internet.

Furthermore, in transaction processing on the Internet, requests and replies come and go many times, and in addition, they always go through the WWW server, so that the overhead of the WWW server becomes extremely large.

[0012]

As described above, the WW
W provides an HTTP protocol that conveniently uses the Internet, but is not suitable for the complex transaction processing required by the EC. Also, the overhead increases. On the other hand, conventional transaction processing is premised on use in a dedicated network, and therefore does not have a simple address such as the HTTP protocol for specifying a connection partner.

As described above, conventionally, for the purpose of EC and the like, HT
To perform transaction processing on the Internet to which the TP protocol is applied, that is, a network to which a general-purpose communication protocol is applied, each has advantages and disadvantages and cannot be said to be optimal.

The present invention has been made in view of the above circumstances, and has as its object to provide a client / server type that can optimally realize transaction processing for electronic commerce (EC) on a network to which a general-purpose communication protocol is applied. It is to provide a cooperative operation method.

[0015]

According to the present invention, there is provided a client application and a server application between a client computer running a client application (client application program) and a server computer running a server application (server application program). In the client / server type cooperative operation method for performing a client / server type cooperative operation via a network to which a predetermined general-purpose communication protocol is applied, a predetermined port is opened in the client computer according to the client application, and the client computer operates on the server computer. Request using a general-purpose communication protocol including the program name of the server application to be executed, the address of the client computer, and the port number of the port. Operating the server on a server computer or on a server computer connected to a different network from the server computer, and executing the program specified by the request by the general-purpose communication protocol, and using the execution result of the program as a request source. Sending to a specific server having a function of returning, when the program specified by the program name in the request is a server application, starting the server application by the specific server; Setting a connection between the server computer on which the application operates and the port of the client computer that specifies the address and port number in the request; and Accordance chromatography server application, and performs the cooperative operation of the client / server by communicating via the connection.

In the client / server type cooperative operation method having such a configuration, the client computer (the client application above) opens a port on the client computer itself and information (client address) for specifying the port. , Port number) and a start program name (if the network to which the predetermined general-purpose communication protocol is applied is the Internet to which the HTTP protocol is applied, an HTTP request), it is specified by the request as long as it is transmitted to the specific server. The server computer (the server application above) is connected to the port (for example, T
After that, in order to set up the CP / IP connection, the client is connected to the server computer (the server application above) via the connection, that is, independently of the specific server via a virtual circuit on the network. / Server-type cooperative operation can be performed. As a result, transaction processing for EC and the like on the network to which the general-purpose communication protocol is applied can be optimally realized.

Here, a first firewall is provided between the server computer on which the specific server operates and the network to allow only the general-purpose communication protocol to pass therethrough, and the server computer on which the server application operates and the server computer If a second firewall is provided between the server and the network to allow connections to the outside but not connections from the outside, the server computer can be protected from intrusion from the outside.

Further, a first router is provided between the server computer on which the specific server operates and the network to route the request to the specific server, and a server computer on which the server application operates and the server computer. If a second router is provided between the server and the network to perform routing for connection from the server computer to the port of the client computer, a communication bottleneck of the router can be avoided.

Further, according to the present invention, while a request including a startup program name is transmitted from a client computer (upper client application) to a specific server as in the prior art, a server computer (upper server) activated in response to this request Application) opens a predetermined port in the server computer, returns a reply by a general-purpose communication protocol including the address of the server computer and the port number of the opened port to the request source via the specific server, and returns the reply. It is also characterized in that the client computer (the client application above) that has received the request establishes a connection with the port of the server computer specified by the address and port number in the reply.

In such a configuration, an operation in which a reply from the server computer (the upper server application) to the client computer (the upper client application) is returned via the specific server occurs only once, but the operation between the two occurs. The client / server type cooperative operation is performed independently of the specific server via the connection. As a result, transaction processing for EC and the like on the network to which the general-purpose communication protocol is applied can be optimally realized.

The present invention relating to the above-described client / server type cooperative operation method is also applicable to an apparatus (client / server network system).

According to the present invention, which relates to a client / server type cooperative operation method, a computer readable program recording a program (client application program, server application program) for executing a corresponding procedure in each of a client computer and a server computer. It also holds as a simple recording medium.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a block diagram of a network system to which a client / server type cooperative operation method according to a first embodiment of the present invention is applied. As shown in FIG. 1, a client computer 12 and a server computer 13 are connected to a network to which a general-purpose communication protocol is applied, for example, the Internet 11 to which an HTTP protocol is applied.

A client application (client application program) 120 is mounted (installed) on the client computer 12.
The client application 120 is a client / server type application that cooperates with a server application 132 described below.

On the other hand, the WWW server 131 and the client application 12 in response to a request from the client application 120 are provided to the server computer 13.
0 and a server application (server application program) 132 that operates in cooperation with each other are installed (installed).

Note that the server application 132
Server computer 1 (where WWW server 131 is located)
It may be mounted on a server computer different from the server computer 3.
That is, the WWW server 131 and the server application 1
32 may be distributed on different server computers.

The feature of this embodiment is that when the client application 120 issues an HTTP request for activating the server application 132 that is a partner of the cooperative operation, the server application 132
A port (hereinafter, referred to as a client port) required to set a connection on the Internet 11 between the server application 132 and the started server application 132 to establish a connection with the port,
Thereafter, communication between the client application 120 and the server application 132 is performed independently of the WWW server 131 via the connection.

Next, the operation of this embodiment will be described with reference to the operation explanatory diagram of FIG. 2 and the flowcharts of FIGS. 3 and 4. The following operations are mainly performed by the client computer 12 and the server computer 13.
0, and the server computer 13 operates according to the WWW server 131 or the server application 132. However, in order to avoid complexity, the client application 120, the WWW server 131, and the server application 132 will be described as operating respectively. .

First, the client application 12
0 is Internet 1 for EC (electronic commerce) etc.
If it is necessary to perform a cooperative operation with the server application 132 via the client computer 1, a predetermined client port 120a is opened in the client computer 12 (step S1).

Next, the client application 120
Is to launch the server application 132
For the WWW server 131 that starts the server application 132, a start program name (designating the server application 132), the client computer 12
An HTTP request including the address (client address) and the client port number (specifying the opened client port 120a) is sent via the Internet 11 as shown by an arrow 21 in FIG. 2 (step S2). And the client application 12
0 waits for the server application 132 to set a connection to the client port 120a (step S3).

On the other hand, the client application 12
WWW server 13 sent HTTP request from 0
1 receives the request, and receives an arrow 22 in FIG.
As shown by, the program specified by the request is activated and the request is passed. Here, the program specified by the HTTP request from the client application 120 is the server application 13
2. Therefore, the server application 132 is started by the WWW server 131 (step S1).
1). The server application 132 may be located on the same computer as the computer on which the WWW server 131 is running (the server computer 13) as in the present embodiment, or may be different from the present embodiment on another computer. It may be arranged in.

The server application 132 has a WWW
When started by the server 131, the WWW server 1
31 (client application 1
20 based on the client address and the client port number included in the HTTP request (from client computer 20).
As shown by an arrow 23 in FIG.
ansmission Control Protocol / IP (Internet Prot)
ocol) connection (TCP / IP connect) is performed (step S12). That is, the server application 132 establishes a connection between the server application 132 and the client port 120a.

Then, the server application 132
The connection established with the client application 120, that is, the client port 12
0a, using a virtual line on the Internet 11 set (connected) to the Internet 11a independently of the WWW server 131.
The CP / IP communication is performed (step S13).

As a result, the client application 120 that has been waiting for the connection setting to the client port 120a by the server application 132 specified by the HTTP request is exchanged with the server application 132 via the connection (virtual line). Then, communication is performed by TCP / IC (step S4).

As described above, in the present embodiment, when the server application 132 establishes a connection with the client port 120a of the computer (client computer 12) of the client address specified by the HTTP request from the client application 120, After that, the client application 120 and the server application 132 use this connection to make the TCP independent of the WWW server 131.
/ IP and perform cooperative operation.

Thus, a cooperative operation (transaction processing) between the client application 120 and the server application 132 via the Internet 11 is optimally realized without incurring the overhead of the WWW server 131.

[First Modification of First Embodiment] Next, a first modification of the first embodiment will be described. FIG.
Is a first example of a network system to which the client / server type cooperative operation method according to the first embodiment of the present invention is applied.
It is a block diagram showing a modification. The same parts as those in FIG. 1 are denoted by the same reference numerals.

The configuration of FIG. 5 is characterized in that two firewalls 52-1 and 52-2 are provided on the server computer 13 side of the configuration of FIG.
Is added. More specifically, FIG.
Is characterized in that a computer network system 50 having a server computer 13 is provided, and the server computer 13 is connected to a LAN (local area network) 51. The point is that two firewalls 52-1 and 52-2 for separating a network (LAN 51) and a network (Internet 11) outside the system 50 are connected. Here, the firewall 52-1 is H
Through the TTP protocol only, the firewall 52-2
Is configured to allow a TCP / IP connection to the outside but not a TCP / IP connection from the outside.

The operation in the configuration of FIG. 5 will be described below with reference to the operation explanatory diagram of FIG. Note that the client application 120 and the server application 132
The operation procedure itself is the same as the operation procedure shown in the flowcharts of FIGS. 3 and 4 described above.

First, the client application 12
An HTTP request addressed to the WWW server 131 (including a start program name, a client address, and a client port number) transmitted from the Internet 0 through the Internet 11 passes through the firewall 52-1 as shown by an arrow 61 in FIG. 5) (via LAN 51 in 5) to the WWW server 131, and
Received at.

The WWW server 131 executes the program specified by the HTTP request from the client application 120, that is, the server application 132
Is activated as shown by the arrow 62 in FIG.

Then, the server application 132
The TCP / IP connection to the client port 120a of the client address specified by the HTTP request (from the client application 120) passed by the WWW server 131 via the firewall 52-2 as shown by an arrow 63 in FIG. I do.

As described above, in this modification, the firewall 52-1 passing only the HTTP protocol between the server computer 13 (the LAN 51 to which the server computer 13 is connected) and the Internet 11 and the TC to the outside (the Internet 11) are connected.
P / IP connection passes but TCP / IP from outside
By providing the firewall 52-2 that does not allow connection, the server computer 13 can be protected from intrusion from the outside. That is, in this modification, the combination of the configuration of FIG. 1 and the firewalls 52-1 and 52-2 optimizes the cooperative operation (transaction processing) between the client application 120 and the server application 132 via the Internet 11. While realizing,
The safety as described above can also be ensured.

When a system in which the WWW server 131 and the server application 132 operate on different server computers is applied, the WWW server 1
A firewall 52-1 may be provided between the server computer on which the server 31 operates and the Internet 11, and a firewall 52-2 may be provided between the server computer on which the server application 132 operates and the Internet 11.

[Second Modification of First Embodiment] Next, a second modification of the first embodiment will be described. FIG.
Is a second example of a network system to which the client / server type cooperative operation method according to the first embodiment of the present invention is applied.
It is a block diagram showing a modification. The same parts as those in FIG. 1 are denoted by the same reference numerals.

The configuration of FIG. 7 is characterized in that two routers 72-1 and 72-2 are added to the server computer 13 of the configuration of FIG. More specifically, the feature of the configuration of FIG. 7 is that a computer network system 70 having a server computer 13 is provided, and the server computer 13 is
Connected to the AN51, this LAN51 and the Internet 1
1 in that two routers 72-1 and 72-2 are connected. Here, the router 72-1 (from the client application 120 on the client computer 12)
The HTTP request addressed to the WWW server 131 is routed.
32 (to the client port 120a of the client computer 12).

Hereinafter, the operation in the configuration of FIG. 7 will be described with reference to the operation explanatory diagram of FIG. Note that the client application 120 and the server application 132
The operation procedure itself is the same as the operation procedure shown in the flowcharts of FIGS. 3 and 4 described above.

First, the client application 12
The HTTP request addressed to the WWW server 131 (including the startup program name, the client address, and the client port number) transmitted from the Internet server 11 via the Internet 11 is transmitted from the router 72 as indicated by an arrow 81 in FIG.
-1 (via the LAN 51 in FIG. 7) to the WWW server 131 and received by the WWW server 131.

The WWW server 131 executes the program specified by the HTTP request from the client application 120, that is, the server application 132
Is activated as shown by an arrow 82 in FIG.

Then, the server application 132
The client port 12 of the client address specified in the HTTP request (from the client application 120) passed by the WWW server 131
At 0a, a TCP / IP connection is made via the router 72-2 as indicated by an arrow 83 in FIG.

As described above, in the present modified example, between the server computer 13 (the LAN 51 to which the server computer 13 is connected) and the Internet 11, the WWW server 131 for the HTTP request from the client computer 12 (the client application 120 above) is transmitted. Router 72-1 having routing function and client computer 1 by server computer 13 (server application 132 above)
TCP / IP for client port 120a
By providing the router 72-2 having a routing function for connection, a communication bottleneck of the router can be avoided as compared with a case where both functions are realized by one router. This effect is obtained when a large number of client computers 12 (however, only one client computer 12 is shown in FIG. 7 for convenience) perform a client / server type cooperative operation with the server computer 13. Remarkable. That is, in the present modification, the client application 12 is configured by the combination of the configuration of FIG.
0 and the server application 132 cooperate via the Internet 11 (transaction processing)
, While avoiding router communication bottlenecks.

When the system in which the WWW server 131 and the server application 132 operate on different server computers is applied, the WWW server 1
A router 72-1 is provided between the server 11 on which the server 31 operates and the Internet 11, and the server application 13
A router 72-2 may be provided between the server 11 on which the server 2 operates and the Internet 11.

[Second Embodiment] Next, a network system to which a client / server type cooperative operation method according to a second embodiment of the present invention is applied will be described. In addition,
The client application and the server application applied in the present embodiment partially differ in function from the client application and the server application applied in the first embodiment.
Incorporate the configuration of

The feature of this embodiment is that the client application 120 has a port (client port 120).
a) is not opened, but WW is sent in response to an HTTP request from the client application 120.
The port of the server application 132 started by the W server 131 (the server port 132a shown in FIG. 9)
And that an HTTP reply including a server address and a server port number is returned from the server application 132 to the client application 120 along the same route as the HTTP request, and that the client application 120
2a) is that a TCP / IP connection is made.

Next, the operation of this embodiment will be described with reference to the operation explanatory diagram of FIG. 9 and FIG.
This will be described with reference to FIG.
First, when it is necessary to cooperate with the server application 132 via the Internet 11 for EC or the like, the client application 120 starts the server application 132 in order to start the server application 132. An HTTP request including the activation program name is sent to the server 131 via the Internet 11 as shown by an arrow 91 in FIG. 9 (step S21).

On the other hand, the client application 12
WWW server 13 sent HTTP request from 0
Upon receiving the request, 1 starts the program specified by the request and passes the request, as indicated by an arrow 92 in FIG. Here, the program specified by the HTTP request from the client application 120 is the server application 132
It is. Therefore, the server application 132 is started by the WWW server 131 (step S3).
1). The server application 132 may be located on the same computer as the computer on which the WWW server 131 is running (the server computer 13) as in the present embodiment, or may be different from the present embodiment on another computer. It may be arranged in.

The server application 132 has a WWW
When started by the server 131, a predetermined server port 132a is opened in the server computer 13 (step S3).
2).

Next, the server application 132 transmits an HTTP reply including the address (server address) of the server computer 13 on which the server application 132 operates and a server port number (specifying the opened server port 132a) in FIG.
As shown by the arrow 93 in the middle, via the WWW server 131,
The same client application 1 via the same route as the HTTP request from the client application 120 (in the opposite direction to the HTTP request)
20 (step S33). Then, the server application 132 executes the client application 12
It waits for connection setting to the server port 132a by 0 (step S34).

Now, the client application 12
No. 0 receives an HTTP reply sent from the server application 132 via the WWW server 131, that is, an HTTP reply including the server address of the server computer 13 and the server port number from the WWW server 131 (step S22).

Then, the client application 12
0 is based on the server address and the server port number included in the HTTP reply (from the server application 132) received from the WWW server 131, to the server port 132a of the port number of the server computer 13 of the server address, As shown by an arrow 93 in FIG. 9, a TCP / IP connection (TCP / IP connect) is performed (step S23). That is, the client application 120 establishes a connection between the client application 120 and the server application 132.

Then, the client application 12
0 is independent of the WWW server 131 using the established connection with the server application 132, that is, a virtual line on the Internet 11 set (connected) to the server port 132a.
IP communication is performed (step S24).

As a result, the server application 132 which has been waiting for the connection setting to the server port 132a by the client application 120 specified by the HTTP reply is exchanged with the client application 120 via the connection (virtual line). To communicate by TCP / IC (step S
35).

As described above, in this embodiment, the client application 120 communicates with the server port 132a of the server computer 13 specified by the HTTP reply from the server application 132 (as a response to the HTTP request from the client application 120). When a connection is established between them, thereafter, the client application 120 and the server application 132 communicate using TCP / IP independently of the WWW server 131 using this connection, and perform a cooperative operation.

Thus, the cooperative operation (transaction processing) between the client application 120 and the server application 132 via the Internet 11 is optimally realized without incurring the overhead of the WWW server 131. However, in the present embodiment, unlike the first embodiment, the HTTP reply from the server application 132 specified in the HTTP request to the client application 120 is W
The operation returned via the WW server 131 occurs only once.

In each of the above embodiments, the case where the client / server type cooperative operation is performed via the Internet to which the HTTP protocol is applied has been described.
The present invention is not limited to this, and the present invention can be applied to a system that performs a client / server type cooperative operation via the Internet to which a general-purpose communication protocol is applied.

The present invention is not limited to the above embodiments, and can be variously modified at the stage of implementation without departing from the scope of the invention. Further, the embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some components are deleted from all the components shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effects described in the column of the effect of the invention can be solved. Is obtained, a configuration from which this configuration requirement is deleted can be extracted as an invention.

[0068]

As described in detail above, according to the present invention, a client / server type cooperative operation on a network to which a general-purpose communication protocol is applied, such as the Internet,
Simplicity and flexibility can be provided at the same time. Thereby, a transaction for electronic commerce (EC) on the Internet or the like can be optimally realized.

[Brief description of the drawings]

FIG. 1 illustrates a client / server according to a first embodiment of the present invention.
FIG. 1 is a block diagram of a network system to which a server-type cooperative operation method is applied.

FIG. 2 is an operation explanatory diagram in the case where a client application 120 and a server application 132 cooperate via the Internet using the HTTP protocol in the first embodiment.

FIG. 3 is an exemplary flowchart for explaining the flow of processing of a client application 120 according to the first embodiment;

FIG. 4 is a flowchart for explaining the flow of processing of a server application 132 according to the first embodiment.

FIG. 5 illustrates a client / server according to the first embodiment of the present invention.
FIG. 9 is a block diagram showing a first modification of the network system to which the server-type cooperative operation method is applied.

FIG. 6 is a diagram illustrating a client application 120 and a server application 132 according to the first modification;
FIG. 3 is an operation explanatory diagram in the case of performing a cooperative operation via the Internet using the HTTP protocol.

FIG. 7 illustrates a client / server according to the first embodiment of the present invention.
FIG. 13 is a block diagram showing a second modification of the network system to which the server-type cooperative operation method is applied.

FIG. 8 is a diagram illustrating a client application 120 and a server application 132 according to a second modification.
FIG. 3 is an operation explanatory diagram in the case of performing a cooperative operation via the Internet using the HTTP protocol.

FIG. 9 illustrates a client / server according to the second embodiment of the present invention.
FIG. 4 is an operation explanatory diagram in the case where a client application 120 and a server application 132 cooperate via the Internet using an HTTP protocol in a network system to which a server-type cooperative operation method is applied.

FIG. 10 is an exemplary flowchart for explaining the flow of processing of a client application 120 according to the second embodiment.

FIG. 11 is a flowchart for explaining the flow of processing of a server application 132 according to the second embodiment.

FIG. 12 is an operation explanatory diagram in a case where a client application server application is separated from a client application server application for cooperative operation via the Internet using the HTTP protocol according to a conventional technique for transaction processing on the Internet.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Internet (network which applies a general-purpose communication protocol) 12 ... Client computer 13 ... Server computer 50, 70 ... Computer network system 51 ... LAN 52-1, 52-2 ... Firewall 72-1, 72-2 ... Router 120 ... Client application 120a Client port 131 WWW server 132 Server application 132a Server port 132a

Claims (6)

[Claims] 1. A client computer on which a client application program runs and a server computer on which a server application program runs, via a network that applies a predetermined general-purpose communication protocol according to the client application program and the server application program. A client / server type cooperative operation method for performing a client / server type cooperative operation by opening a predetermined port in the client computer according to the client application program, A request by the general-purpose communication protocol including the address of the client computer and the port number of the port is transmitted to the server. A function of operating on a computer or a server computer connected to the network different from the server computer to execute a program specified by a request by the general-purpose communication protocol and returning an execution result of the program to a request source. Sending to a specific server having, when the program specified by the program name in the request is the server application program,
Activating the server application program by the specific server; and the server computer on which the server application program operates and the port of the client computer that specifies an address and a port number in the request according to the activated server application program. Setting a connection between the client application program and the server application program.
A client / server type cooperative operation method comprising performing a server type cooperative operation. 2. A client computer running a client application program and a server computer running a server application program via a network that applies a predetermined general-purpose communication protocol according to the client application program and the server application program. A client / server type cooperative operation method for performing a client / server type cooperative operation by using the general-purpose communication protocol including a program name of the server application program operating on the server computer according to the client application program. The general-purpose communication server operates on a server computer or a server computer connected to the network different from the server computer. Sending the program specified by the protocol to the specified server having a function of returning the execution result of the program to the request source by executing the program specified by the protocol; and when the program specified by the program name in the request is the server application program, ,
Activating the server application program by the specific server; opening a predetermined port in the server computer on which the server application program runs according to the activated server application program; address of the server computer and port of the port Returning a reply according to the general-purpose communication protocol including a number to a request source via the specific server; and, according to the request source client application program, the client computer on which the client application program operates, the address in the reply, and Setting a connection with the port of the server computer designated by a port number. According to the program and the server application program, by communicating via the connection client /
A client / server type cooperative operation method comprising performing a server type cooperative operation. 3. A computer-readable recording medium for recording a client application program executed by a client computer performing a client / server type cooperative operation via a network that applies a predetermined general-purpose communication protocol with a server computer. In the client computer, a step of opening a predetermined port on the client computer itself; and a program name of the server application program running on the server computer, an address of the client computer itself, and the opened port. A request by the general-purpose communication protocol including a port number, operating on the server computer or a server computer connected to the network different from the server computer,
Sending a program specified by the request according to the general-purpose communication protocol to a specific server having a function of returning an execution result of the program to a request source; andspecifying by a program name in the request sent to the specific server. When the server application program is started on the server computer, a connection is established between the server computer and the port opened by the client computer itself specified by the address and port number in the request by the server computer. A computer-readable recording medium recording a client application program for executing a step of waiting for setting and a step of performing communication with the server computer via the set connection. 4. A computer-readable recording medium for recording a server application program executed by a server computer performing a client / server type cooperative operation via a network to which a predetermined general-purpose communication protocol is applied with a client computer. A predetermined port is opened in the client computer itself in the client computer, and a server computer connected to the network on the server computer or another network different from the server computer from the client computer. Operating on the specific server having a function of executing the program specified by the request by the general-purpose communication protocol and returning the execution result of the program to the request source,
As a result of the request sent by the general-purpose communication protocol including the program name of the server application program running on the server computer, the address of the client computer, and the port number of the opened port, the server is sent by the specific server. When the server application program on the computer is started,
Setting a connection between the server computer and the port of the client computer that specifies the address and port number in the request; and performing communication with the client computer via the set connection. And a computer-readable recording medium on which a server application program for executing the above is recorded. 5. A computer-readable recording medium storing a server application program executed by a server computer performing a client / server type cooperative operation via a network that applies a predetermined general-purpose communication protocol to and from a client computer. A program that operates on the server computer, from the client computer, on the server computer or on a server computer connected to the network different from the server computer, and specifies a request by the general-purpose communication protocol. To the specific server having a function of returning the execution result of the program to the request source by executing the request by the general-purpose communication protocol including the program name of the server application program operating on the server computer. Opening a predetermined port in the server computer itself when the server application program is started by the specific server; and the general-purpose communication protocol including an address of the server computer itself and a port number of the opened port. Returning a reply to the request source via the specific server; and a connection between the client computer of the request source and a port opened by the server computer itself specified by the address and port number in the reply. A computer-readable recording medium that stores a server application program for executing a step of waiting for setting of the client application and a step of performing communication with the client computer via the set connection. 6. A computer-readable recording medium storing a client application program executed by a client computer performing a client / server type cooperative operation via a network that applies a predetermined general-purpose communication protocol to and from a server computer. A request by the general-purpose communication protocol including a program name of the server application program operating on the server computer, the client computer being connected to the network on the server computer or another network different from the server computer. Operating on the server computer, and executing a program specified by the request according to the general-purpose communication protocol, and sending the execution result of the program to a specific server having a function of returning to a request source; and When a server application program specified by the program name in the transmitted request is started on the server computer, a predetermined port is opened in the server computer, and an address of the server computer itself and a port number of the port are provided. When a reply by the general-purpose communication protocol including: is returned via the specific server, a connection is set between the client computer and the port of the server computer specified by the address and port number in the reply. And a computer-readable recording medium on which a client application program for executing a step of performing communication with the server computer via the set connection is recorded.