JP2002222148A - Program for controlling file sequence, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically and easily conduct file transfer control secured in sequency using an electronic mail not secured in its sequency, by imparting a sequential number automatically onto a file or the electronic mail on the transmission side, to be transmitted, and by conducting automatic retransfer when transmission confirmation is not received on the transmission side even after the lapse of a fixed time, or conducting automatic retransmission based on retransmission requirement of the deficient file based on the sequential number on the reception side, any by eliminating the duplicate file automatically on the reception side, as to a file sequential control program transferred while secured in its sequency of the file. SOLUTION: This invention provides the file sequence control program functioned as a means for imparting the sequential number to the file to be attached to the electronic mail, or attaching the file to the electronic mail to impart the sequential number to the electronic mail, a means for transmitting the electronic mail, and a means for retransferring the electronic mail when the transmission confirmation is not received even after the lapse of the fixed time, and a recording medium therefor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file order control program and a recording medium for transferring files in order.

[0002]

2. Description of the Related Art Conventionally, files are sequentially transmitted one by one using an e-mail on the Internet according to the SMTP / POP3 protocol, and the receiving side changes the order of the files in the e-mail received on the receiving side. , Sorted by software.

[0003]

However, when files are sequentially transmitted by e-mail according to the above-described conventional SMTP / POP3 protocol, the receiving side rearranges the files in the received e-mail in order. . Also, when rearranging, duplicate files are deleted, and missing files are requested to be retransmitted to the transmission source. Therefore, there are the following problems. (1) The order of transmitting files is not guaranteed on the receiving side.

[0004] (2) When retransmission is performed, the receiving side cannot automatically delete the duplicate file. (3) Insufficient files cannot be confirmed or automatically resent. In order to solve these problems, the present invention automatically assigns a sequence number to a file or an e-mail on the transmitting side and transmits the file or e-mail. Automatically resends a file based on a sequence number based on a request to resend a missing file, or automatically deletes a duplicate file on the receiving side, and guarantees order using e-mail whose order is not guaranteed. The purpose is to perform control automatically and easily.

[0005]

Means for solving the problem will be described with reference to FIG. In FIG. 1, a transmission-side system 1 is a system (computer system) that transmits a file attached to an electronic mail.

[0006] The receiving system 13 is a system (computer system) for receiving electronic mail. Next, the operation will be described.

[0007] The transmitting system 1 assigns a sequence number to a file and attaches it to an e-mail, or attaches a file to an e-mail and attaches a sequence number to the e-mail. Even when the transmission confirmation is not received, the corresponding e-mail is resent.

At this time, a fixed time is calculated based on the time from when the e-mail is transmitted to when the transmission confirmation is received, and is dynamically set. In addition, a time zone not included in the certain time (for example, a time zone such as a holiday or nighttime) is specified.

Further, a list of the sequence numbers of the files to be transmitted is transmitted, and the files of the sequence numbers for which retransmission has been requested are retransmitted. In addition, the receiving system 13 extracts the received e-mail or the sequence number given to the file attached to the received e-mail, and determines that the file is insufficient based on the sequence number of the extracted file. In such a case, the sequence number of the missing file is returned to the transmission source to request retransmission, or the file having the duplicate sequence number is deleted when it is determined that the file is duplicated.

At this time, when the sequence number of the file to be transmitted is received from the transmission side, the sequence number of the file that has not been received is returned and a retransmission request is made. Therefore, the sender automatically assigns a sequence number to a file or e-mail and sends it. If the sender does not receive a delivery confirmation after a certain period of time, it automatically resends the file or e-mail. Automatic resend based on the resend request of
By performing the automatic deletion of the duplicate file on the receiving side, it is possible to automatically and easily perform the file transfer control in which the order is guaranteed by using the e-mail whose order is not guaranteed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment and operation of the present invention will be described in detail with reference to FIGS.

FIG. 1 shows a system configuration diagram of the present invention.
In FIG. 1, a transmission side system 1 is a system (computer system) that transmits a file attached to an electronic mail, and includes a sequence number generating unit 3, an electronic mail generating unit 4, a delivery confirmation receiving unit 5, It comprises a delivery file transmitting means 6, an electronic mail transfer control means 7, and the like.

The sequence number generating means 3 generates a sequence number (for example, a unique number in ascending order) of a file to be transferred. The e-mail generating means 4 attaches a file to the e-mail as an attached file and transfers the file to the e-mail
And so on. At this time, set the file sequence number to the file name of the file, the file contents,
Alternatively, a specific tag is added to the control information of the e-mail and set.

The delivery confirmation receiving means 5 transmits an electronic mail and receives the sequence number (delivery confirmation) of the file received from the transmission destination. In the delivery confirmation, the order number is automatically confirmed when the e-mail is received from the receiving side system with the returned one.

The non-delivery file transmitting means 6 transmits a list of non-delivery files or a list of files to be transmitted. E-mail transfer control means 7
Is for transmitting an e-mail to a transmission destination, and here, is a request for transmission to the SMTP / POP3 mail server 8 via a network.

The file sender 2 is a user who sends a file or an application. The SMTP / POP3 mail server 8 receives a user's e-mail on a LAN or a network (for example, the Internet) according to the SMTP / POP3 protocol and sends it to a destination mail server.

[0017] The receiving system 13 is an SMTP / POP system.
3 is a computer system that fetches e-mail addressed to itself from the mail server 15 and arranges files in the order of sequence numbers, requests resending when there is a shortage, and deletes when there are duplicates. It comprises an electronic mail transfer control means 9, a reception file storage means 10, a delivery confirmation transmission means 11, an order / missing / multiplex reception control means 12, and the like.

The electronic mail transfer control means 9 is configured to transmit the SMTP /
It retrieves its own e-mail from the POP3 mail server 15 or the like. Received file storage means 1
0 is for extracting a file and a sequence number from an e-mail, storing the file and the sequence number in the order of the sequence number, and the like.

The acknowledgment transmitting means 11 transmits (sequence acknowledgment transmission) the sequence number of the received file to the transmission source. Order / missing / multiplex receiving control means 1
2. When a missing (insufficient) file is found based on the received file sequence number, the sequence number of the missing file is transmitted to the transmission source, or when a duplicate file is found, the file is deleted. Or something.

[0020] The file recipient 14 is
3 (user or application) to receive the files arranged in the order of the sequence numbers. The network (Internet) 16 is an SMTP / P on the transmitting side.
OP3 mail server 8 and SMTP / POP3 on the receiving side
This is a network (for example, the Internet) for connecting to the mail server 15.

Next, the operation of the configuration of FIG. 1 will be described in detail according to the order of the flowchart of FIG. Here, the transmitting side corresponds to the transmitting side system 1 of FIG. 1, and the receiving side corresponds to the receiving side system 13 of FIG.

FIG. 2 is a flowchart (part 1) for explaining the operation of the present invention. In FIG. 2, S1 creates an attached file. In this method, a file to be attached to an electronic mail (for example, a file in which transaction details of a bank account are set) to be transmitted in order with a sequence number is created.

In step S2, a sequence number is added and stored.
In this case, for example, an order number generated in ascending order is added to the file created in S1, and the file is stored as a history in association with the file.

In step S3, an electronic mail is created. this is,
The order number added in S2 is set in the e-mail in which the destination name, e-mail address, title, sender name, address, etc. are set in the e-mail, or set in the file name or a predetermined part of the file contents (see FIG. 5). ), And a delivery confirmation request, and create an e-mail that can be sent.

In step S4, transmission is performed. This is because the transmission side system 1 of FIG.
It connects to the mail server 8 (connects by notifying the user ID and password), and requests transfer of the created e-mail.

Through the above steps S1 to S4, it is possible to create a file in the receiving side system 1, add a sequence number, attach it to an electronic mail as an attached file, and send it to a destination.

In FIG. 2, S21 is received. S2
2 is stored in the mailbox. These S21, S2
Reference numeral 2 indicates that the SMTP / POP3 mail system 15 of FIG. 1 receives the e-mail transmitted from the transmission source and stores it in the destination mailbox. And the receiving side system 1
3 connects to the SMTP / POP3 mail server 15 (connects by notifying the user ID and password) and reads out the e-mail from the mailbox.

A step S23 decides whether or not the delivery confirmation setting is ON. This is because the delivery confirmation setting in the received e-mail is
It is determined whether N has been set (set in S2 described above). In the case of YES, a delivery confirmation is transmitted (replying the set file sequence number) in S24, and the process proceeds to S25. On the other hand, if NO, the process proceeds to S25.

In step S25, it is determined whether the received data is a plurality or already received. This is to determine whether the received data (file) is plural or equal to the sequence number of the already received file. If YES, S
Proceed to 26. In the case of NO, the file attached to the e-mail received in S29 is received, and the process ends.

In step S26, the sequence number is checked. If there is any missing data, that is, if the sequence number of the file extracted from the received e-mail is not ascending but is missing (insufficient or missing), a retransmission request is issued in S27. Send (reply the retransmission request by specifying the sequence number) and end.

In the case of duplication, that is, when it is determined that the sequence number of the file extracted from the received e-mail is the same as the sequence number of the already received file, the duplicate data is deleted (S28). The file with the specified sequence number is deleted), and the processing ends.

If there is no problem, it is determined that there is no omission or duplication, so the information is received in S29. By the above S21 to S29, the receiving system 13
Check the sequence number of the file attached to the e-mail received in step 2, and when missing, specify the sequence number of the file and return a resend request.If there is a duplicate file, delete the file and delete it. If there are no duplicates, add and arrange the files so that the receiving side automatically stores and arranges the files based on the sequence number of the file attached to the e-mail, requests retransmission of missing files or deletes duplicate files. Can be performed.

In FIG. 2, in step S11, the transmitted file is retransmitted if the transmission confirmation of the transmitted file has not been received for a certain period of time. In this case, if the delivery confirmation has not arrived from the receiving side for a certain period of time after the transmission in S4 described above, the file of the sequence number in which the delivery confirmation has not arrived is resent. Then, the processing after S21 described above is performed on the receiving side.

By the above S11, the sending side sends the e-mail with the sequence number, and if the delivery confirmation is not received even after a certain period of time, the e-mail of the file with the sequence number is automatically resent. Becomes possible. And
If the delivery confirmation has not been received even after resending a predetermined number of times, the administrator is notified by e-mail and warned.

FIG. 3 is a flowchart for explaining the operation of the present invention.
(Part 2) is shown. In FIG. 3, S31 creates a delivery confirmation request. This creates, for example, a list of the sequence numbers of the files requested to be acknowledged by attaching them to an e-mail.

At S32, transmission is performed. This transmits the list of the sequence numbers of the files requesting the delivery confirmation created in S31. S41 is received on the receiving side.

A step S42 decides whether or not the data has been received. This determines whether the file (data) of the sequence number in the list notified by the delivery confirmation request has already been received. YES
In the case of, it is determined that the file (data) has already been received, so the process proceeds to S43. On the other hand, in the case of NO, S4
Go to 7.

At S43, since it is determined that the data has been received at S52, it is determined whether or not the number of transmission acknowledgment retransmissions is MAX. This determines whether or not the number of acknowledgment retransmissions set as the maximum value of the number of acknowledgment retransmissions has been reached. In the case of YES, it has been determined that the maximum number of delivery confirmation retransmissions has been reached, so the administrator is notified in S44 (notifying that the maximum number of delivery confirmation retransmissions has been reached), and the processing ends. On the other hand, in the case of NO in S43, it is determined that the number is less than or equal to the maximum number of delivery confirmation retransmissions,
In step 45, a delivery confirmation is created (a list in which the sequence number of already received data (file) is set from the list set in the delivery confirmation request), and a reply is made in step S46.

YES in S32, S41, S42,
From S43 to S46, when the number of delivery confirmation requests reaches the maximum number, the administrator is notified of the fact. When the number is equal to or less than the maximum number, the sequence number of the already received sequence number of the It is possible to create a list, reply to the sender, and reply to the non-delivery confirmation.

In FIG. 3, since it is determined in S47 that the data has not been received in S42, it is determined whether the number of data retransmission requests is MAX. For this, the maximum number of retransmission requests for data (file) is set in advance, and it is determined whether the maximum number of retransmission requests is the maximum. In the case of YES, since the number of retransmission requests has reached the maximum number of retransmission requests, the administrator is notified in S48 that the number of retransmission requests has reached the maximum number of retransmission requests, and the process ends. On the other hand, in the case of NO, since the number of retransmission requests is found to be equal to or less than the maximum number of retransmission requests, a retransmission request of data (file) (a list in which a sequence number of unreceived data (file) is set) is created in S49. , S46.

NO, S in S32, S41, S42
When the number of data retransmission requests reaches the maximum number in steps S49 to S49 and S46, the administrator is notified of this,
If the number is less than the maximum number, a list of sequence numbers of unreceived data (files) is created and returned to the transmission source, and unreceived data (files) can be returned.

FIG. 4 is a flowchart for explaining the operation of the present invention.
(Part 3) is shown. In FIG. 4, in S51, the receiving side transmits a delivery confirmation or retransmission request. In S61, the transmitting side receives the delivery confirmation or retransmission request transmitted in S51.

In S62, whether the reception in S61 is a retransmission request,
Determine whether it is delivery confirmation. If the request is a retransmission request, the process proceeds to S64. In the case of the delivery confirmation, the process proceeds to S63. S63,
Since it is determined that the delivery has been confirmed in S62, the state of the data is set to delivery confirmed and the processing ends. Since it is determined that the delivery confirmation has been transmitted and received from the receiving side, the file having the sequence number set in the delivery confirmation is set as delivered.

In S64, since it is determined in S62 that the request is a retransmission request, it is determined whether the number of retransmissions by the retransmission request is MAX. YE
In the case of S, since the number of retransmissions is equal to the preset maximum number of retransmissions, the administrator is notified in S65 that the number of retransmissions has reached the maximum number of retransmissions, and the process ends. On the other hand, in the case of NO, the number of retransmissions is found to be equal to or less than the maximum number of retransmissions,
In step 6, the data (file) is retransmitted, that is, the data (file) having the sequence number specified in the retransmission request is attached to the electronic mail and retransmitted.

As described above, when the delivery confirmation is received from the receiving side, the delivery confirmation is set for the data (file) of the corresponding sequence number, while when the retransmission request is received, the retransmission is performed when the number of retransmission is less than the maximum number of retransmissions. The data (file) of the sequence number specified by the request is retransmitted, and when the number of retransmissions reaches the maximum, it is possible to notify the administrator of the retransmission.

FIG. 5 is an explanatory diagram of the present invention. this is,
An example of assigning a file sequence number is shown below. (A) of FIG.
Shows an example of order data. Here, the upper part is the order data file, the lower part is added with a sequence number part, and the sequence number part is the sequence number of the file (for example, “001”).
Set.

FIG. 5B shows an example of estimated data. Here, the upper part is the estimate data file, the order number part is added to the lower part, and the order number (for example, “002”) of the file is set in the order number part.

As described above, a file is provided with a sequence number portion, a unique ascending sequence number is added to the sequence number portion, and the file is attached to an e-mail as an attached file and transmitted. The file can be processed by arranging the files in order based on the sequence number set in the sequence number portion in the file extracted from the electronic mail. When the transmission confirmation is not received even after a certain period of time has been received by the sender, the file with the sequence number is automatically attached to the e-mail and resent, or a retransmission request is received from the receiver based on the sequence number. It is possible to retransmit a file, eliminate missing files, and, if a file having the same sequence number is duplicated on the receiving side, delete one of the files and automatically eliminate the duplication.

[0049]

As described above, according to the present invention,
The sender automatically sends a file or e-mail with a sequence number and sends it.If the sender does not receive a delivery confirmation after a certain period of time, it automatically resends or resends the missing file based on the sequence number at the receiver. Automatically resend based on the request, and automatically delete duplicate files on the receiving side. This can be easily performed.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of the present invention.

FIG. 2 is a flowchart (part 1) for explaining the operation of the present invention.

FIG. 3 is a flowchart (part 2) for explaining the operation of the present invention.

FIG. 4 is a flowchart (part 3) for explaining the operation of the present invention.

FIG. 5 is an explanatory diagram of the present invention.

[Explanation of symbols]

 1: Transmission system 2: File sender 3: Sequence number generation means 4: E-mail generation means 5: Delivery confirmation reception means 6: Non-delivery file transmission means 7, 9: E-mail transfer control means 8, 15: SMTP / POP3 mail server 10: received file storing means 11: delivery confirmation transmitting means 12: order / missing / multiplex receiving control means 13: receiving system 14: file receiver 16: network (Internet)

Continued on the front page (72) Inventor Naoki Naoki 98, Unoki-nu, Unoki-cho, Hebei-gun, Ishikawa Pref.

Claims (8)

[Claims] 1. A file order control program for transferring a file in order with a sequence number, assigning a sequence number to a file and attaching it to an e-mail or attaching a file to an e-mail and assigning a sequence number to the e-mail Means for transmitting the e-mail, and a file order control program for functioning as a means for resending the e-mail when a transmission confirmation is not received after a certain period of time. 2. The computer-readable storage medium according to claim 1, wherein the predetermined time is calculated based on a time from when the e-mail is transmitted to when the transmission confirmation is received, and is dynamically set. . 3. The storage medium according to claim 1, further comprising means for designating a time zone not included in said predetermined time. 4. The computer-readable storage medium according to claim 1, further comprising means for transmitting a list of files whose transmission confirmation has not been received among the transmitted files and requesting retransmission of the transmission confirmation. . 5. A file sequential control program for transferring a file with ordering of files, means for extracting a sequence number given to a received e-mail or a file attached to the received e-mail, When it is determined that a file is missing based on the sequence number of the file that was sent, the sequence number of the missing file is returned to the sender and a retransmission request is made, and it is determined that the file is duplicated. A file sequence control program for functioning as a means for deleting a file having a duplicate sequence number. 6. The storage medium according to claim 5, wherein when receiving the sequence number of the file to be transmitted from the transmission side, the sequence number of the file that has not been received is returned and a retransmission request is made. 7. A means for attaching a sequence number to a file and attaching it to an e-mail or attaching a file to an e-mail and attaching a sequence number to the e-mail; a means for transmitting the e-mail; A computer-readable recording medium on which is recorded a program that functions as a means for resending the electronic mail when a transmission confirmation is not received. 8. A means for extracting a sequence number given to a received e-mail or a file attached to the received e-mail, and when a file is insufficient based on the sequence number of the fetched file. Recorded a program that, when found, returns the sequence number of the missing file to the sender and requests retransmission, and functions as a means to delete the file with the duplicate sequence number when the file is found to be duplicated. Computer readable recording medium.