JPH08316990A - Network access method - Google Patents

Abstract

PURPOSE: To obtain a network access method which is capable of reducing the influence for the extension composed of a network and improving operability by enabling the the selection of the detour circuit for a fault. CONSTITUTION: A transmission side AP(application program) 1 designates not a network address but a logical communicating party name as a communicating party and registers a message 16 in a transmission side communicating party 8. A transmission side queue control function 2 designates the message 16 and a network address for an empty transmission side resource queue of transmission side resource queues 9, 10 and 11 and registers the message and the address. A transmission side communication control function 3 transmits the message and the network address on a network 4. A reception side communication control function 5 registers the massage 6 in the corresponding reception side communicating party queue 15 and gives an instruction to a reception side queue control function 6. A reception side AP 7 fetches the message 16 from the reception side communicating party queue 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network access method, and more particularly to a network access method for performing online application program communication.

[0002]

2. Description of the Related Art Conventionally, when performing communication between online application programs in the same host computer, when an application program on the transmission side sends a message via a virtual terminal, the communication control means sets a destination address in the message. And sends it to the message sending means, and the address translation means sets a value determined in advance to correspond to the destination address included in the sent message in a one-to-one relationship to the same message via the pseudo line as the source address. Then, a network access method is known in which the message is passed to the message receiving means and is then passed to the receiving side application program via a virtual terminal to which a destination address having a value equal to the source address is given. 3-102551 Publication: Title of invention Online application program-to-program communication system ").

As another conventional network access method, a system is provided between an application program executed on at least one host computer and a large number of data terminal equipments (DTEs) connected to an X25 packet switching network. A method for improving the possibility of rerouting in a communication system provided by a virtual circuit connected to a network architecture (SNA) network is known (Japanese Patent Laid-Open No. Hei 5-
No. 153167: Title of invention "communication controller").

[0004]

However, according to each of the above-mentioned conventional network access methods, the address of the communication partner is specified at the time of transmission, but the address is a network address that has no business meaning. Therefore, when sending a message, it is necessary to be aware of the destination network address, and the versatility is greatly impaired. Further, since the communication path is one path using a single resource, communication becomes impossible when a communication failure occurs, which is very inconvenient in operation.

The present invention has been made in view of the above points,
By not directly using the address of the network to be accessed by the application program, but by accessing the network with the corresponding logical communication partner name, the influence on the expansion of the network configuration can be reduced, and multiple network addresses can be assigned the same logical address. It is an object of the present invention to provide a network access method in which an application program can select a bypass route for a failure without being aware of the communication route and enhance the operability by setting the communication partner.

[0006]

According to the present invention, in order to achieve the above object, a sending application program specifies a logical communication partner name and registers a transmission message in a communication partner queue of a sender queue management function. , The queue management function on the sending side specifies the network address corresponding to the logical communication partner name, registers the message in the resource queue that is empty in the communication control function on the sending side, and the communication control function on the sending side sends the message from the resource queue. It is adapted to take out and transmit it to the network, register it in the corresponding receiving side partner queue via the receiving side communication control function by the network address, and fetch the registration message of the receiving side partner queue into the receiving side application program.

The transmission side communication control function of the present invention is
The transmission side queue management function has a plurality of resource queues corresponding to the network address, and the reception side communication control function has a plurality of resource queues corresponding to the resource queues of the transmission side communication control function.

[0008]

According to the present invention, when the sending application program sends a message, a logical communication partner is set instead of directly designating the destination network address, and the sending queue management function is set by the sending application program from the sending application program. Send a message by specifying the network address corresponding to the specified logical communication partner,
Since the application program on the receiving side receives via the network, the application program can communicate without being aware of the network address, and by setting the communication procedure for each resource queue in the communication control function, Programs can be developed between receiving-side application programs without being aware of the communication procedure.

Further, according to the present invention, since the transmission side communication control function and the reception side communication control function each have a plurality of resource queues corresponding to network addresses, the resource queues between the application programs of the same communication partner may be different. The network route of can be a different route.

[0010]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of an embodiment of the method of the present invention. In this embodiment, a transmission side application program (AP) 1, a transmission side queue management function 2, a transmission side communication control function 3, a network 4, a reception side communication control function 5, a reception side queue management function 6 and a reception side application program ( AP) 7. The queue management functions 2 and 6 include communication partner queues 8 and 15, respectively. The communication control function 3 is the resource queues 9, 10 and 11, and the communication control function 5 is the resource queue 12,
13 and 14, respectively.

Next, the operation of this embodiment will be described with reference to the flowchart for explaining the processing in FIG. When the communication side AP1 transmits the message 16 to the reception side AP7, the transmission side AP1 registers the message 16 in the transmission side communication partner queue 8 by specifying the logical communication partner name as the communication partner instead of the network address. , And notifies the transmitting side queue management function 2.

Then, the transmission side queue management function 2 schedules the communication partner queue 8 (step 21), and searches the three transmission side resource queues 9, 10 and 11 of the designated logical communication partners (step 22). ). When the unused resource queue is searched by the search of the resource queue (steps 23 and 24), it is determined whether or not the unused resource queue is in failure (step 25). A message 16 is registered by designating a network address corresponding to the logical communication partner name in the transmission-side resource queue found to be empty, and the transmission-side communication control function 3 is notified (step 26).

When it is determined in step 24 that the resource queue is not unused, the resource queue is searched again, and when it is determined in step 25 that the resource queue is in failure, the resource queue is similarly re-executed. Search for. When all the resource queues have been searched, a timer retry process for searching again after a predetermined time has elapsed (step 27), and the resource queues are searched again (step 22).

By the communication start processing in step 26, the transmission side communication control function 3 takes out the message 16 from the transmission side resource queue in which the message 16 is registered and transmits it on the network 4. Network 4
Then, the message 16 is registered in the resource queue of the receiving side by the network address, and the communication control function of the receiving side 5
Instruct.

Here, when the resource queue on the transmitting side in which the above-mentioned message 16 is registered is the resource queue 9, the message 1 is transmitted by the network address.
The reception side resource queue in which 6 is registered is the resource queue 12.

The receiving side communication control function 5 receiving the message 16 registers the message 16 in the corresponding receiving side communication partner queue 15 and instructs the receiving side queue management function 6. The reception side queue management function 6 notifies the reception side AP 7 that the message 16 has been received. The receiving AP 7 sends the message 1 from the receiving communication partner queue 15 according to the instruction.
Take in 6.

As described above, according to this embodiment, the transmitting side A
The P1 and the receiving AP 7 can access the network 4 without being aware of the network address.

When the network between the transmission side resource queue 9 and the reception side resource queue 12 is in trouble, the transmission side communication control function 3 recognizes the failure and the communication control function 3 is separated. The message 16 is transmitted using the resource queue 10 on the transmitting side. As a result, the sending AP 1 can send the message 16 without being aware of the communication path selection.

[0019]

As described above, according to the present invention,
When the sending application program sends a message, it can communicate without being aware of the network address, and by setting the communication procedure for each resource queue in the communication control function, the sending side and receiving side application programs can communicate with each other. Since the program can be developed without being aware of the procedure, the versatility and compatibility of the application program can be improved.

According to the present invention, the communication control function on the transmission side and the communication control function on the reception side each have a plurality of resource queues corresponding to network addresses.
Since the network route between the resource queues can be set as another route between the application programs of the same communication partner, it is possible to select a detour route for the network failure and improve the operability.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a flowchart for explaining processing according to an embodiment of the present invention.

[Explanation of Codes] 1 sending side application program (AP) 2 sending side queue management function 3 sending side communication control function 4 network 5 receiving side communication control function 6 receiving side queue management function 7 receiving side application program (AP) 8 sending side Communication partner queue 9, 10, 11, 12, 13, 14 Resource queue 15 Receiver communication partner queue 16 Transmission message

Claims (2)

[Claims] 1. A transmission side application program specifies a logical communication partner name, registers a transmission message in a communication partner queue of a transmission side queue management function, and the transmission side queue management function makes the logical communication partner name. The message is registered in the resource queue in which the transmission side communication control function is vacant by designating the network address corresponding to, and the transmission side communication control function extracts the message from the resource queue and transmits it to the network, A network access method comprising: registering in a corresponding receiving side partner queue by a network address via a receiving side communication control function, and fetching a registration message of the receiving side partner queue into a receiving side application program. 2. The transmission side communication control function has a plurality of resource queues corresponding to network addresses from the transmission side queue management function, and the reception side communication control function is each resource of the transmission side communication control function. The network access method according to claim 1, further comprising a plurality of resource queues corresponding to the queues.