JPH0486941A - File transfer system - Google Patents

Abstract

PURPOSE:To enable file data to be transferred even to a computer not being connected directly by transferring the file data to a computer on the other side when the file data not addressed to its own host computer is supplied from a host computer on one side. CONSTITUTION:The host computers 1-1, 1-2,...,1-n are provided with files 2-1, 2-2,...,2-n in which data are stored, environmental definition files 3-1, 3-2,...,3-n in which a definition information text is stored conforming to definition information, transfer systems 41-1 to 41-i, 42-1 to 42-i,...,4n-1 to 4n-i which perform input/output, and file transfer devices 5-1, 5-2,...,5-n which transfer the file data to be transferred by attaching a transmission origin address and a transmission destination address to a neighboring host computer and deliver received data to the transfer system when the received file data shows the one addressed to its own host computer, and rewrite the transmission origin address and the transmission destination address and transfer it to the neighboring computer.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a file transfer method in a system composed of a plurality of host computers, in which adjacent host computers are connected to each other via a communication line.

[Prior Art] Conventionally, in a system composed of a plurality of host computers, in which adjacent host computers are connected to each other via a communication line, adjacent host computers that are directly connected to each other via a communication line are It was possible to transfer file data only between

[Problem to be solved by the invention]

As mentioned above, conventionally, file data can only be transferred between adjacent host computers that are directly connected via a communication line, so it is not possible to transfer file data to a host computer other than the adjacent host computers. If this becomes necessary, there is a problem in that a communication line must be installed between the host computer and the destination host computer.

An object of the present invention is to enable file data transfer even between host computers that are not directly connected via a communication line.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a system comprising a plurality of host computers, each of which has a file, and in which adjacent host computers among the host computers are connected to each other via a communication line. When each host computer transfers file data stored in a file on its own host computer to another host computer, each host computer adds a receiving host identifier indicating the host computer that should receive the file data to the file data and transfers the file data to the adjacent host computer. The host computer, to which file data is transferred to one of the host computers and to which the receiving host identifier has been added from one of the adjacent host computers, has the receiving host identifier and its own host computer. If the computer identifiers match, the received file data is stored in a file corresponding to the own host computer; if they do not match, the received file data and receiving host identifier are stored in the other host computer among the adjacent host computers. Forward.

Further, in order to achieve the above object, the present invention provides a system comprising a plurality of host computers, each of which has a file, and in which adjacent host computers among the host computers are connected to each other via a communication line. - When each host computer transfers file data stored in a file of its own host computer to another host computer, each of the host computers includes a receiving host identifier indicating the host computer that should receive the file data in the file data, and an adjacent host computer. A transfer destination host identifier indicating one of the host computers is added and transferred to the one of the adjacent host computers, and the receiving host is transferred from one of the adjacent host computers to the receiving host. The host computer to which the file data to which the identifier and transfer destination host identifier have been added will receive 481. if the receiving host identifier and transfer destination host identifier match. Store the tough faille data in a file corresponding to the own host computer, and if they do not match, add the received receiving host identifier and the transfer destination host identifier indicating the other host computer among the adjacent host computers to the received file data. The data is added and transferred to the other host computer among the adjacent host computers.

[For production]

When a host computer transfers file data stored in a file on its own host computer to another host computer, it adds a receiving host identifier indicating the host computer that should receive the file data to the file data and transfers it to the adjacent host computer. to one host computer within the computer. Further, when each host computer receives file data to which a receiving host identifier is added from one of the adjacent host computers, it compares the receiving host identifier with the identifier of its own host computer. If the two match, that is, if the local host computer is the host computer that should receive the file data, the received file data is stored in a file corresponding to the local host computer, and if they do not match, the host computer in the adjacent host computer stores the received file data in a file corresponding to the local host computer. transfer the received file data and receiving host identifier to the other host computer. Therefore, the file data sent from the source host computer is relayed by a host computer that exists between the source host computer and the host computer that should receive the file data, and then transferred to the destination host computer. .

In addition, when a host computer transfers file data stored in a file on its own host computer to another host computer, the host computer includes a receiving host identifier indicating the host computer that should receive the file data and an address in the adjacent post computer. A transfer destination host identifier indicating one of the host computers is added, and the data is transferred to the one host computer. In addition, when each host computer receives file data to which a receiving host identifier and a transfer destination host identifier are added from one of the adjacent host computers, the receiving host i identifier and transfer destination host identifier are added to each host computer. Compare. If the two match, that is, if the host computer is the host computer that should receive the file data, the received file data is stored in a file, and if they do not match, the host computer stores the file data. If the host computer is not the host computer that should receive the data, add the received receiving host identifier and the transfer destination host identifier of the adjacent host computer (the transfer destination host identifier indicating the host computer that is not your side) to the received file data. The file data sent from the sender's host computer is transferred to a host computer that is not the sender among the host computers that send the file data. The message is relayed by the host computer located at the destination, and then transferred to the destination host computer.

〔Example〕

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

FIG. 1 is a block diagram of an embodiment of the present invention, which is composed of a plurality of host computers 1-1.1-21-n. Each host computer 1-1.1-2. ...
, 1-n are files 2-1 in which data is stored, respectively.
．． 2-2. . . , 2n, and an environment definition file 31.3-2. in which definition information statements and definition information defining the system environment are stored in correspondence. ..., 3-n and file 2
-1°2-2. ..., transfer systems 41-1 to 41-4, 42-1 to 421 that perform input/output to and from 2-n,
..., 4n-1 to 4n-i, add the source address and destination address to the file data to be transferred and transfer it to the adjacent host computer, and also check whether the received file data is addressed to the own host computer. If the file is addressed to the host computer, it is passed to the received file booter transfer system, and if it is not addressed to the host computer, the source address and destination address are rewritten and sent to the adjacent host computer. File transfer device 5-1, 5-2..., 5-
communication management device 6-1.6-2.n that manages communication between the host computer and adjacent host computers. ...6-n. In addition, adjacent host computers 1 to 1 to 1-n are connected to communication lines 112. I! 23.・
-, are connected via Anl.

Figure 2 is a diagram showing an example of the contents of the environment definition file 3-1. Identifier I of 1-1 to I-H
D I ~ r D n corresponds to the definition information statement "identifier of own host computer" and is the host computer 1-1.
The identifier IDI of the host computer 91-2.1 corresponds to the definition information statement "Identifier of adjacent host computer".
~n(7) Identifier ID2. rDn is assigned to each transfer system 41-1 to 41-i, 42-1 to 42 in accordance with the definition information statement "correspondence between transfer system name and transfer system identifier".
i, +++++H, 4n-1 to 4n-4 transfer system l
, and the transfer system identifier of each host computer 1-1 to 1- in correspondence with the definition information statement "transfer system identifier of the transfer system possessed by each host combiator".
The identifiers ID1 to +Dn of n and the transfer system identifier of the transfer system are stored. Incidentally, similar contents are also stored in environment definition files 3-2 to 3-n provided in other host computers 1-2 to l-n.

Figure 3 fat, (bl is a diagram showing an example of the format of the source address and destination address added to file data when transferring file data. The source address is It consists of a transmission system identifier 31 indicating the transfer system of the data transmission source, a transmission host identifier 32 indicating the host computer of the file data transmission source, and a self-host identifier 33 indicating the host computer that transferred the file data. , the destination address is as shown in the same figure (bl), a receiving system identifier 34 indicating the transfer system that should receive the file data, a receiving host identifier 35 indicating the host computer that should receive the file data, and the destination address for transferring the file data. The transfer destination host l section 36 indicates the adjacent host computer to be transferred.

Next, the operation of this embodiment will be explained using an example in which the transfer system 41-1 in the host computer 11 transfers file data to the transfer system 43-1 in the host computer 1-3.

A transfer system 41-1 in the host computer 1-1 transfers file data from an application program running on the host computer 1-1 or a terminal device (not shown) to a transfer system 43-1 in the host computer 1-3. When instructed to transfer the data to the file 2-1, the file data is extracted from the file 2-1 and added to the file transfer device 5-1, and the data is transferred to the destination transfer system 43.
1 transfer system name is passed to the file transfer device 5-1.

When the file transfer device 5-1 receives the file data and the transfer system name of the destination transfer system 43-1 from the transfer system 411, it refers to the environment definition file 3-1 and sets the transfer system 4i1 as the sending system identifier 31. The sending system identifier of the host computer 1-1 is written to the sending host printer 32 and the own host identifier 33.
At the same time, create a source address in the format shown in FIG. , the host computer 1 adjacent to the transfer destination host identifier 36
-2.1-rl]*l (the host computer that can reduce the number of host computers that relay file data when transferring file data), the third one that has the identifier ID2 of host computer 1-2 set Figure (b
Create a destination address in the format shown in l. Next, the file transfer device 5-1 adds the source address and destination address created above to the file data passed from the transfer system 41-1, and passes the data to the communication management device 6-1.

When the file data with the source address and destination address added is added from the file transfer device 5-1, the communication management device 6-1 transfers the file data to the adjacent host computer 1-
2. Transfer the file data to which the source address and destination address have been added via the communication line β12 to the host computer 1-2 indicated by the destination host identifier 36 of the destination address and address in 1-n. .

When the communication management device 62 in the host computer 1-2 receives the file data with the source address and destination address added via the communication line I212, it passes it to the file transfer device 5-2.

When the file transfer device 5-2 receives file data with a source address and a destination address added, the file transfer device 5-2 transfers the identifier set in the receiving host identifier 35 of the destination address and the destination host identifier 36. By comparing with the identifier, it is determined whether the passed file data is addressed to the own host computer. Also, by comparing the identifier set in the receiving host identifier 35 of the transfer destination address with the identifier of the own host computer, it is determined whether the passed file data is addressed to the own host computer. You can also. In this case, the transfer destination host identifier 36 becomes unnecessary.

If the comparison matches, that is, if it is determined that the file data is addressed to the own host computer, the file data is sent to the transfer system indicated by the receiving system identifier 34 among the transfer systems 42-1 to 42-1. At the same time, the transmitting system name corresponding to the transmitting system identifier 31 is passed.

If the comparison does not match, that is, if it is determined that the message is not addressed to the host computer, the host computer 1-1's identifier TDI set in the host identifier 33 in the source address is set to the host computer 1-1. 2
The identifier ID2 of the host computer 1-2 set in the transfer destination host identifier 36 in the destination address is set to the identifier ID2 of the adjacent host computer 1-1.1.
It is determined whether or not the sending host identifier 32 of the replaced sending source address matches the own host identifier 33.

If it is determined that they do not match, the replaced source address and destination address are added to the file data and passed to the communication management device 6-2.

Also, if it is determined that they match, this means that the file data sent from the host computer 1-2 has been relayed by another host computer and returned to the host computer 1-2 again, which means that some abnormality has occurred. Therefore, processing such as displaying an abnormality is performed.

In this example, the receiving host identifier 35 of the destination address passed to the file transfer device 5-2 is set to the identifier ID3 of the host computer 1-3, and the destination host identifier 36 is set to the identifier ID2 of the host computer 12. Therefore, the comparison result between the two is inconsistent, and the file transfer device 5-2 uses the host computer 1-1's own host identifier 33 set in the source address passed from the communication management device 6-2. Set the identifier IDI to the identifier ID2 of the own host computer 1-2, and set the identifier TD2 of the host computer 1-2 set to the transfer destination host identifier 36 in the destination address to the host computer 1-3 on the adjacent transfer destination side. The file data is replaced with the identifier ID3, and the replaced source address and destination address are added to the file data and passed to the communication management device 6-2.

When the file data with the source address and destination address added is added from the file transfer device 5-2, the communication management device 6-2 transfers the file data to the adjacent host computer 1-
3. The file data to which the source address and destination address have been added is transferred to the host computer 1-3 indicated by the destination host identifier 36 of the destination address in 1-1 via the communication diagram WA123.

When the communication management device 6-3 in the host computer 1-3 receives the file data to which the source address and destination address are added via the communication diagram WA123, it transfers them to the file transfer bag W5-3.

When the file data to which the source address and the destination address are added is passed, the file transfer device 5-3 receives the receiving host identifier 35 and the destination host at identifier of the destination address passed from the communication management device 6-3. By comparing with 36, the file data is
- Determine whether or not the monona is addressed to 3. In this example, the receiving host identifier 35 and the destination host identifier 36 are set to the identifier ID3 of the host computer 1-3, so the file transfer device 5-3 transfers the file data addressed to its own host computer 1-3. The file data is passed to the transfer system indicated by the receiving system identifier 34 among the transfer systems 43-1 to 43-1 (transfer system 43-1 in this example), and the environment definition file is 3-3, the transfer system name corresponding to the sending system identifier 31 in the source address (in this example, the transfer system name of the transfer system 41-1) is obtained, and it is also passed to the transfer system 43-1.

When the transfer system 43-1 receives the file data and the transfer system name of the transfer system 41-1 from the file transfer device 53, it stores the file data in a portion of the file 2-3 corresponding to the transfer system 41-1.

In this way, according to this embodiment, file data can be transferred to the host computer 1-3 that is not directly connected to the source host computer 1-1 through a communication line.

FIG. 4 is a block diagram of another embodiment of the present invention, in which the host computers 1-1 and l-n are not connected via a communication line; This embodiment differs from the embodiment shown in FIG. 1 in that it is not connected in a loop through a communication line. In this figure, the same reference numerals as in FIG. 1 represent the same parts.

Next, the operation of this embodiment will be explained using an example in which the transfer system 43-1 in the host computer 13 transfers file data to the transfer system 41-1 in the host computer 1-1.

A transfer system 43-1 in the host computer 1-3 transfers file data from an application program running on the host computer 1-3 or a terminal device (not shown) to the transfer system 41-1 in the host computer 1-1. When instructed to transfer the data to the file 2-3, the file data is extracted from the file 2-3 and added to the file transfer device 5-3, and the data is transferred to the destination transfer system 41.
-1's transfer system name is passed to the file transfer bag W5-3.

When the file transfer device 5-3 receives the file data and the transfer system name of the destination transfer system 41-1 from the transfer system 43-1, it refers to the environment definition file 3-3 and transfers the data to the sending system identifier 51. System 43-1
In addition to creating a sending source address in the format shown in FIG. 5 (al) in which the sending system identifier of
The receiving system identifier of the transfer system 41-1 is set in the receiving system identifier 53, the identifier IDI of the host computer 1-1 is set in the receiving host a identifier 54, and the host computer 12.1-4 of the adjacent host computer 12.1-4 is set in the receiving host identifier 55. Create a destination address in the format shown in FIG. The reason why the host computer 31 is not provided as in the source address shown in FIG. 3 fa+ is that in this embodiment, the host computers 1-1 to 1n are not connected in a loop, This is because the sent file data will not return to its own host computer again.Next, the file transfer device 5-3 uses the created source address and send address for the file data passed from the transfer system 43-1. The destination address is added and passed to the communication management bag W6-3.

When the file data with the source address and destination address added is added from the file transfer device 5-3, the communication management device 6-3 transfers the destination host a of the destination address.
The file data to which the source address and destination address have been added is transferred to the host computer 1-2 indicated by the identifier 55 via the communication diagram WA123.

When the communication management device 62 in the host computer 1-2 receives the file data with the source address and destination address added via the communication line 123, it passes it to the file transfer device 5-2.

When the file transfer device 5-2 receives file data to which a source address and a destination address are added, it sets the identifier set in the receiving host identifier 54 of the destination address and the identifier 55 of the destination host a. By comparing the identifier with the host computer, it is determined whether the passed file data is addressed to the own host computer.

If the comparison matches, that is, if it is determined that the file data is addressed to the own host computer, the file data is sent to the transfer system indicated by the receiving system identifier 53 among the transfer systems 42-1 to 42-1. At the same time, the transmitting system name corresponding to the transmitting system identifier 51 is also passed.

In addition, if the comparison does not match, that is, if it is determined that the message is not addressed to the own host computer, the identifier ID2 of the host computer 1-2 set in the transfer destination host identifier 55 in the destination address is transferred to the adjacent host computer. 1-1. Replace with the identifier IDI of the destination host computer 1-1 in 1-3, add the replaced source address and destination address to the file data, and send it to the communication management device 6-2. hand over.

In this example, the receiving host identifier 54 of the source address passed to the file transfer device 5-2 contains the identifier IDI of the host computer 1-1, and the destination host identifier 55 contains the identifier ID2 of the host computer 1-2. The file transfer bag f5-2 is the host computer 1 set in the destination host identifier 55 in the destination address passed from the communication management bag [6-2. -2's identifier TD2 is replaced with the identifier IDI of the adjacent destination host computer 1-1, the replaced source address and destination address are added to the file data, and the communication management device 6-2
give it to

When the file data with the source address and destination address added is added from the file transfer device 5-2, the communication management device 6-2 transfers the file data to the adjacent host computer 1-
1. Transfer the file data to which the source address and destination address have been added via the communication line 112 to the host computer 1-1 indicated by the destination host identifier 55 of the destination address in 1-3.

When the communication management device 6-1 in the host computer 1-1 receives the file data to which the source address and destination address are added via the communication diagram vAε12, it transfers them to the file transfer device 5-1.

When the file data with the source address and destination address added is passed, the file transfer device 5-1 receives the receiving host identifier 54 of the destination address passed from the communication management device 6-1 and the transfer destination host a identifier. 55, the file data is determined to be the host computer 1-
Determine whether the message is addressed to 1 or not. In this example, the identifier IDI of the host computer 1-1 is set in both the receiving host identifier 54 and the transfer destination host identifier 55, so the file transfer bag W5-1 has the file destination of the own host computer 1-1. 1, and passes the file data to the transfer system indicated by the receiving system identifier 53 (in this example, the transfer system 411) among the transfer systems 41-1 to 411, and also transfers the file data to the environment definition file 3. -1, the transfer system name corresponding to the sending system identifier 51 in the source address (in this example, the transfer system name of the transfer system 41-1) is obtained, and it is also passed to the transfer system 41-1.

When the transfer system 41-1 receives the file data and the transfer system name of the transfer system 43-1 from the file transfer device 5-1, it stores the file data in the part corresponding to the transfer system 43-1 in the file 2-1. .

In addition, the receiving host identifier 5 added to the file data transferred to the host computer 1-1.1-nL
4 and the transfer destination host identifier 55 will always match if there is no abnormality in the system, but if some abnormality occurs, they may not match. Device 5-1.5-n
transfers failure notification data indicating that the file transfer has failed to the host computer 1j that is the source of the file data, in the same manner as when transferring file data.

Host computer 1- which received this failure notification data
The file transfer device 5-j in j performs necessary processing such as error display and retransmission of file data.

〔Effect of the invention〕

As explained above, in the present invention, when file data not addressed to the own host computer is added from one of the adjacent host computers, the file data is transferred to the other adjacent host computer, and the file data is transferred to the other adjacent host computer. Since file data destined for a computer is received when it is added, it becomes possible to transfer file data even between host computers that are not directly connected via a communication line. effective.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a diagram showing an example of the contents of the environment definition file 3-1, FIG. 3 is a diagram showing an example of the format of the source address and destination address, FIG. 4 is a block diagram of another embodiment of the present invention, and FIG. 5 is a diagram showing an example of the format of a source address and a destination address. In the figure, 1-1 to 1-n... host computers 2-1 to 2-
n...File 3-1 to 3-n...Environment definition file 41 1 to 4
1-i, -, 4n-1 to 4n...transfer system 5-1 to 5-n...file transfer device 6-1 to 6-n
...Communication management device I! 12.1123. −． 1ln1-communication line.

Claims (2)

[Claims] (1) In a system consisting of a plurality of host computers, each of which has a file, and in which adjacent host computers among the host computers are connected to each other via a communication line, each host computer has its own host computer. When transferring file data stored in a file on a computer to another host computer, a receiving host identifier indicating the host computer that should receive the file data is added to the file data, and the file data is transferred to one of the adjacent host computers. The host computer that receives the file data with the receiving host identifier added from one of the adjacent host computers determines that the receiving host identifier matches the identifier of its own host computer. If so, the received file data is stored in a file corresponding to the own host computer, and if they do not match, the received file data and the receiving host identifier are transferred to the other host computer among adjacent host computers. File transfer method. (2) In a system consisting of a plurality of host computers, each of which has a file, and in which adjacent host computers among the host computers are connected to each other via a communication line, each host computer has its own host computer. When transferring file data stored in a file on a computer to another host computer, the file data includes a receiving host identifier indicating the host computer that should receive the file data, and one of the adjacent host computers. and a transfer destination host identifier indicating the transfer destination host computer, and transfer it to the one of the adjacent host computers, and a receiving host identifier and a transfer destination host identifier are added from one of the adjacent host computers. The host computer to which the received file data is sent stores the received file data in a file compatible with its own host computer if the receiving host identifier and transfer destination host identifier match, and if they do not match, it stores the received file data in a file compatible with its own host computer. It is characterized by adding a received receiving host identifier and a transfer destination host identifier indicating the other host computer among the adjacent host computers to the data, and transferring the data to the other host computer among the adjacent host computers. File transfer method.