JP2006340401A - Http server - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an HTTP server capable of data transmission/reception between communication terminals utilizing advantages of facsimile transmission and an electronic mail by using HTTP. <P>SOLUTION: A center server 1 causes a communication section 11 to receive destination information and application communication information or the like together with data to be transmitted from a transmitter side communication terminal, and stores the received information in an original document database 14. At this time, the center server 1 searches a terminal database 13 based on the destination information, acquires the reception capability of a communication terminal of a transmission destination, and determines whether or not the data to be transferred are within the range of reception capability. If out of the reception capability, data reception is made to be error, or the data are automatically converted so as to be within the range of the reception capability. When the communication terminal of the transfer destination accesses to receive the data, the data for this communication terminal are transferred, and data transfer between communication terminals completes. Further, as application communication, various functions such as time designation, term of validity management or encryption communication can be provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a network system that performs communication using HTTP.

  Conventionally, facsimile communication has been used as a method for transmitting various types of information using image data. Facsimile communication is still widely used at present and has come to have many functions. In facsimile communication, the reception capability of the other party is detected by exchanging a procedure signal with the other party, and image data is transmitted within the range of the reception capability of the other party. As a result, in most cases, the image data can be received at the destination.

  However, since the facsimile communication is basically a one-to-one communication, it cannot be transmitted when the other party is not in a receivable state due to busy or the like. Further, even when the same image data (information) is transmitted to many other parties, basically, it is necessary to transmit the image data to each other party. Furthermore, for example, there is a function such as time designation as an applied communication function. In this case, the image data to be transmitted must be held until the designated time, and there is a disadvantage that a large memory capacity is required. .

  Recently, data exchange networks such as the Internet and LAN have been developed, and data is transmitted and received using the data exchange network. Electronic mail (SMTP / POP) is widely used as a method for transmitting and receiving data between communication terminals on a data exchange network. In electronic mail, data is transmitted to a mail server and then distributed. Therefore, the sender can send an e-mail regardless of the state of the other party. Further, even when sending to many destinations, if the destination addresses are noted, there is an advantage that only one transmission to the mail server is required.

  However, electronic mail is only transmitted unilaterally from the transmission source, and there is no means for knowing the reception capability of the other party as in facsimile communication. For this reason, it is not known whether the transmitted electronic mail can be referred to by the other party. There is also a problem that many functions that are generally available in facsimile communication such as time designation cannot be used.

JP 2000-332940 A JP-A-11-103322

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an HTTP server that enables transmission / reception of data between communication terminals using the advantages of facsimile communication and electronic mail using HTTP. Is.

  The present invention stores, in an HTTP server, communication means for performing HTTP communication with a plurality of communication terminals, data to be transferred received from the communication terminal via the communication means, and destination information indicating the transfer destination of the data Data storage means, and control means for transmitting the data from the communication means so that the data is transferred to a destination communication terminal in accordance with the destination information. The control means communicates the URL for transmission with respect to the URL for transmission. The data and destination information sent from the terminal are received and stored in the data storage means, and the data destined for the communication terminal is retrieved from the data storage means in accordance with a request from the communication terminal for the reception URL. Then, it is transferred to the requesting communication terminal.

  Furthermore, it can be configured to have a function of returning whether or not data has arrived at the transfer destination in response to a reception confirmation request from the communication terminal. Thus, it can be confirmed whether or not the data has actually arrived at the transfer destination.

  Further, if the time is specified when the data is received, the data may not be sent in response to the request from the communication terminal for the reception URL until the specified time arrives. it can.

  Furthermore, if an expiration date is set when data is received, the data is not sent in response to a request from the communication terminal for a URL for reception after the expiration date has passed. Can do.

  In addition to this, when receiving data from the communication terminal of the transmission source, various application communication functions such as designation of encrypted communication, designation of a transfer destination group, designation of registration on a bulletin board, etc. are applied as application communication information. It is possible to provide.

  In addition, authentication can be performed at least when a request from the communication terminal is received for a URL for reception.

  Furthermore, the communication history of the transmitted / received data may be managed, and the communication history may be returned to the inquiry source communication terminal in response to the inquiry from the communication terminal. In addition, a communication management function of the communication terminal can be provided. In particular, a communication management function for each group is provided so that, for example, authentication can be performed for each group or communication management can be aggregated for each group.

  According to the present invention, data can be transferred using HTTP, can be transmitted regardless of the state of the other party, which is an advantage of e-mail, and can be transmitted to a plurality of destinations by one transmission. Transmission is possible. In addition, many applied communication functions can be provided. According to the present invention, there is an effect that data can be transmitted and received between communication terminals taking advantage of the advantages of facsimile communication and electronic mail that have been conventionally used.

  FIG. 1 is a block diagram showing an example of a system including an embodiment of the HTTP server of the present invention. In the figure, 1 is a center server, 2 is a data exchange network, 3 to 6 are communication terminals, 11 is a communication unit, 12 is a control unit, 13 is a terminal database, and 14 is a document database. In the example shown in FIG. 1, the center server 1 and the communication terminals 3 to 6 are connected to a data exchange network 2 such as a LAN or the Internet so as to be communicable. Of course, the number of communication terminals is not limited to four. Further, the number of center servers is not limited to one. Further, various other network devices may be connected to the data exchange network 2.

  The center server 1 is an HTTP server of the present invention, communicates with the communication terminals 3 to 6 using HTTP, and relays data transfer between the communication terminals. The center server 1 can be configured to include a communication unit 11, a control unit 12, a terminal database 13, a document database 14, and the like.

  The communication unit 11 performs HTTP communication with the communication terminals 3 to 6 through the data exchange network 2. At this time, for example, the URL used when the communication terminals 3 to 6 transmit data may be different from the URL used when the communication terminals 3 to 6 receive data. Note that the communication unit 11 may be able to communicate using a protocol other than HTTP. For example, in correspondence with SMTP / POP, transmission and reception of electronic mail may be possible.

  The control unit 12 controls each unit to realize various functions provided by the center server 1. In particular, after receiving data and destination information indicating the transfer destination of the data from the communication terminals 3 to 6 via the communication unit 11 and temporarily storing them in the document database 14, the data is transferred to the transfer destination communication terminal according to the destination information. Control to be transferred. Data transfer to the transfer destination communication terminal can be performed according to the request received from the transfer destination communication terminal. It is also possible to receive a designation of a group registered in advance as a transfer destination or a bulletin board function that does not specify a transfer destination. Further, referring to the terminal database 13, the reception capability of the transfer destination communication terminal is acquired, and it is determined whether or not the data received from the communication terminals 3 to 6 is within the range of the reception capability of the transfer destination communication terminal. . Data can be transferred as it is within the range of the receiving capability of the destination communication terminal, but if a function outside the range of the receiving capability is required, if the data is transferred as it is, the destination communication It is assumed that data cannot be referred to at the terminal or a result as intended by the transmission source cannot be obtained. Therefore, for data that requires a function outside the range of the receiving capability of the destination communication terminal, reception is refused and an error is returned to the source communication terminal. Alternatively, the data is converted so that it is within the range of the receiving capability of the transfer destination communication terminal so that the transfer destination communication terminal can receive data without any problem.

  The control unit 12 also receives an instruction (applied communication information) when using the applied communication function when receiving data to be transferred from the communication terminals 3 to 6. Then, the application communication function specified by the application communication information is executed. As the applied communication function, it is possible to provide various applied communication functions such as designation of the transfer start time, designation of an expiration date during which the destination communication terminal can receive data, designation of encrypted communication, and the like. . Application communication may be performed by designating the transfer destination group described above or designating registration on the bulletin board. When the transfer start time is specified, control is performed so that the data is not transferred until a specified time arrives even if there is a reception request from the transfer destination communication terminal. If an expiration date is specified, the data is transferred in response to a request from the transfer destination communication terminal until the specified expiration date, but is not transferred after the expiration date. In this case, after the expiration date, the data may be deleted from the document database 14 or may be left in the document database 14 for retransmission. When encrypted communication is designated, data is encrypted and transferred when data is transferred to the destination communication terminal. The other functions are similarly controlled and processed according to the functions.

  The terminal database 13 stores information such as reception capabilities of the communication terminals 3 to 6 and functions as reception capability storage means. FIG. 2 is an explanatory diagram of an example of information stored in the terminal database. In this example, the name (terminal name) and identification information (terminal ID), password, sender information, resolution, recording paper, encoding method, color reception, and other information of each communication terminal 3 to 6 can be stored. It is.

  The password indicates that the password data is required from the sending side in order to transfer data to the communication terminal, and the stored password and the password received from the sending side are compared and matched. Only in such a case, transfer of data to the communication terminal is permitted. For example, for the communication terminal 4, data is transferred to the communication terminal 4 only when a password “xyz” is sent from the transmission side.

  The sender information indicates that only data stored from the sender is transferred to the communication terminal. For example, the communication terminal 3 indicates that only data from the “accounting department” is transferred. For example, since the password is specified in the communication terminal 4, data is transferred only when the sender is “General Affairs Department” and the password “xyz” is sent.

  The resolution, recording paper, encoding method, and color information all indicate the reception capability when transferring image data, and the maximum resolution, maximum recording paper size, and receivability when receiving image data (respectively) (Decoding is possible) image data encoding method, and whether color image reception is possible. For example, the communication terminal 3 cannot receive image data with a resolution higher than 200 dpi. Further, for example, the communication terminal 6 cannot receive A3 size image data because the maximum paper size is B4 size. The communication terminal 4 can receive image data encoded by JBIG as an encoding method, but cannot receive a color image.

  In the example illustrated in FIG. 2, there are rows in which the terminal name column is “group 1”, “group 2”, and “bulletin board”. The group can be used when instructing one or a plurality of communication terminals stored in other fields to transfer the same data. By simply designating a group at the time of transmission, the operation is the same as when a plurality of destinations are designated, so that designation of destinations can be simplified. For example, in “Group 1”, terminal IDs “1111” and “2222” are stored, and by designating “Group 1”, it is possible to instruct data transfer to the communication terminal 3 and the communication terminal 4. .

  The “bulletin board” is used when instructing that all communication terminals make the information publicly viewable. Data for which “Bulletin Board” is designated may be added to a bulletin board page so that it can be referred to by HTTP, or all the communication terminals may be distributed as a destination.

  Note that the information stored in the terminal database 13 shown in FIG. 2 is an example, and can be selected and stored from information that can be used as various reception capabilities. For example, only text data or image data can be received, or various information such as a file format and usable software can be stored as reception capability. Further, the information on the reception capability of the communication terminal stored in the terminal database 13 can be registered by various methods such that each communication terminal 3 to 6 can be registered, or an operator of the center server can register. it can.

  The manuscript database 14 functions as a data storage unit, and stores data received from a communication terminal on the transmission side, destination information received together with the data, and information on application communication when information is added. . FIG. 3 is an explanatory diagram of an example of management information in the document database. In this example, the data ID for specifying the data to be transferred, the data file indicating the file name of the stored data, the receiving target terminal indicating the transfer destination, the state indicating whether or not the transfer is performed, the data to be transferred Each information of the attribute information file indicating the file name storing the attribute information and the application communication information for storing the information related to the application communication is stored, and the data to be transferred is managed.

  In this example, the data to be transferred is managed as an internally identifiable file, and the file name is stored in the data file column. In addition, information (destination information) of a transfer destination designated when the data is sent is stored in the reception target terminal column. Here, the transfer destination is indicated by the terminal ID in the terminal database shown in FIG. Of course, it may be information specifying the terminal name and other communication terminals. The status column indicates whether the data has been transferred (read) or not (unread). When a plurality of transfer destinations are designated or a bulletin board is designated and data is transferred only to some communication terminals, this is indicated as “partially unread”. The attribute information of the data to be transferred is stored as a separate file from the data, and the file name is stored in the attribute information file column. As the attribute information, for example, in the case of image data, it is desirable to include information that can be compared with the receiving capability of the transfer destination, such as resolution, size, encoding method, and color. Of course, it is not limited to these.

  In the applied communication information column, the file name of a file storing instructions relating to applied communication is stored here. In addition, the function of applied communication indicated is shown in parentheses. For example, for the data with the data ID “0001”, the time is specified. This time designation function is a function of performing transfer after a designated time. Therefore, even if data is received from the transmission side and there is a reception request from the data transfer destination, the data is not transferred before the designated time. For data with a data ID “0002”, a sub-address is instructed. In this case, when the data is transferred to the transfer destination, the designated sub address is also transferred. In the transfer destination communication terminal, for example, a user to be received can be specified by using the subaddress, and a transfer destination can be instructed. When the data ID is “0004”, a password is sent. For example, when a password input from the transfer destination is requested in confidential communication or the like and authentication is obtained, transfer to the transfer destination is performed. In addition, various application communication instructions can be received. It is also possible to instruct by combining a plurality of applied communication functions.

  FIG. 4 is an explanatory diagram outlining the operation of the system including one embodiment of the HTTP server of the present invention. Here, an outline of basic operations is shown assuming that data is transferred from the communication terminal 3 to the communication terminal 5. It is assumed that information such as the reception capability of each of the communication terminals 3 to 6 is registered and stored in the terminal database 13 in advance in the center server 1.

  First, in (1), the communication terminal 3 designates a URL for transmission to the center server 1 to establish connection with the center server 1. Thereafter, in (2), together with the data to be transferred, destination information (destination terminal ID) as a transfer destination of the data, a terminal ID of the own apparatus, and the like are transmitted to the center server 1. Note that a transmission page may be sent from the center server 1 to the communication terminal 3 when connected to the center server 1, and transmission from the communication terminal 3 to the center server 1 may be performed by a transmission instruction in the page. The destination information may be configured as a part of a transmission URL used when accessing the center server 1, for example. Further, when connecting to the center server 1 or when the center server 1 receives data or the like from the communication terminal 3, the communication terminal 3 on the transmission side may be authenticated.

  In the center server 1, the data to be transferred received from the communication terminal 3, the destination terminal ID, and the terminal ID of the own apparatus are stored in the document database 14. At this time, for example, management information as shown in FIG. 3 is generated. Further, as a response to receiving the data to be transferred, it is preferable to return a data ID for uniquely specifying the received data to be transferred, as indicated by a broken line in the figure.

  Thereafter, in (3), the communication terminal 5 which is the transfer destination designates a reception URL to the center server 1 to establish connection with the center server 1. Then, in (4), the terminal ID of the own apparatus is designated and data reception is requested. Also in this case, as a response to the access to the center server 1 in (3), a page for receiving data is sent to the communication terminal 5, and after inputting predetermined items such as the terminal ID, the data is received by a transmission instruction in the page. You may comprise so that a receipt request may be made.

  In accordance with the request from the communication terminal 5, the center server 1 searches for data destined for the communication terminal 5 from the management information of the document database 14 as shown in FIG. 3, for example, and communicates the corresponding data file in (5). Transfer to terminal 5. In this way, the data transmitted from the communication terminal 3 reaches the communication terminal 5. Further, for example, an attribute information file may be configured to be transferable in response to a request from the communication terminal 5. Furthermore, when the communication terminal 5 connects to the center server 1 or requests the center server 1 to transfer data, the transfer destination communication terminal 5 may be authenticated. Furthermore, for example, the center server 1 returns the presence / absence of newly arrived data, the number and data ID of newly arrived data, sender information and transmission information (such as transmission time) to the transfer destination communication terminal, and confirms at the transfer destination. It may be configured to receive data transfer from. At this time, data to be transferred may be selectable.

  When a plurality of transfer destinations are specified as destination information from the communication terminal 3 on the transmission side in (2), data is transferred in response to a request from any of the specified transfer destination communication terminals. Further, when a group is designated, it may be handled that one or more communication terminals registered in the designated group are designated as transfer destinations. As a result, the transmission side communication terminal 3 can transmit data (broadcast communication) to a plurality of transfer destinations by one transmission. Furthermore, when a bulletin board is designated, data may be transferred in response to a request from any communication terminal.

  After the data is transferred to the transfer destination communication terminal, the center server 1 automatically deletes the data. Alternatively, it is stored as it is, and is deleted according to an instruction from the transfer destination communication terminal. When a plurality of transfer destinations are designated (including group designation and bulletin board designation), the data cannot be deleted until data transfer to at least all the transfer destinations is completed. In addition, when a bulletin board is designated, it is possible to prevent deletion from the transfer destination and to set a time limit or delete from the transmission side.

  Thus, the data transferred from the communication terminal 3 to the communication terminal 5 may exceed the range of the reception capability of the communication terminal 5. Therefore, the center server 1 checks whether or not the received data is within the range of the reception capability of the communication terminal 5 until the data is received from the communication terminal 3 and transferred to the communication terminal 5. That is, based on the destination information received together with the data, the terminal database 13 as shown in FIG. 2 is searched to obtain information regarding the reception capability of the communication terminal 5 that is the transfer destination. Then, it is determined whether the attribute of the data, for example, if it is image data, the resolution, size, color, etc. are within the range of the reception capability. In addition, for example, in the example of the terminal database 13 shown in FIG. 2, it is possible to check the sender information, the password, and the like.

  Such a reception capability check can be performed, for example, when data to be transferred is received. When the received data exceeds the receiving capability range of the destination communication terminal 5, an error is returned as a data transmission response in (2) to the transmission side communication terminal 3. can do. At this time, an item exceeding the receiving capability of the transfer destination communication terminal may be returned to the transmission source. Alternatively, the receiving capability of the transfer destination communication terminal may be transferred to the transmitting side, and data transmission within the range may be prompted. By checking at the time of data reception in this way, the transfer destination communication terminal can receive the data within the range of the reception capability.

  Alternatively, the reception capability is checked as described above, and if the reception capability of the communication terminal of the transfer destination is exceeded, the data is appropriately stored in the center server 1 so that it is within the range of the reception capability of the communication terminal. Conversion processing may be performed. For example, if the upper limit of the resolution is exceeded, resolution conversion may be performed so that it is within the reception capability range. The same applies to the size. If the encoding method is different, it may be decoded and then re-encoded according to the reception capability. When a color image is transmitted to a communication terminal that can receive only black and white, it may be converted into a black and white image. Furthermore, when the communication terminal of the transfer destination cannot perform communication by HTTP, it can be configured so as to respond to a retrieval request by POP after converting it to e-mail format, for example.

  By transferring the data appropriately converted in this way, the transfer destination communication terminal can receive the data within the range of the reception capability. This conversion process can be performed when data is received from the transmission side, or can be performed when data is transferred to a transfer destination.

  Note that the above-described check at the time of data reception and automatic conversion processing may be appropriately combined. For example, the password and sender information can be checked when data is received, and conversion such as resolution can be automatically performed during transfer. In addition, information regarding the reception capability of the transfer destination communication terminal can be previously extracted from the communication terminal on the transmission side, and data is transmitted to the center server 1 after confirming the reception capability of the transfer destination communication terminal. It may be configured.

  The source communication terminal 3 can be configured such that, for example, as shown in (6), a request for reception confirmation is made to the center server 1 and the response is returned by the center server 1 in (7). At this time, if a data ID is returned after data transmission in (2), it is preferable to request reception confirmation using the data ID. Since the timing (6) shown in FIG. 4 is after the data is received by the communication terminal 5, a reception notification is returned to the communication terminal 3 in (7). Thus, it can be confirmed whether or not the data has actually arrived at the transfer destination.

  In addition, the center server 1 can be configured to manage a communication history of transmitted / received data. In response to an inquiry from a communication terminal, the communication history data of the communication terminal and the communication history data of the designated communication terminal can be transmitted to the communication terminal that made the inquiry. Further, the center server 1 may be provided with a communication management function, and for example, a function of managing each communication terminal or each group in which the communication terminals are classified into specific groups may be provided. For example, grouping can also be used as a group in the terminal database 13, or a management group can be set separately. A group code is set for each group, and when transmission or reception is performed, authentication based on the group code can be requested, and communication management can be aggregated in units of groups.

  In addition, when the center server 1 has an email transmission / reception function together with HTTP, for example, notification of arrival of newly arrived data by email to the transfer destination communication terminal, or notification of completion of reception after transfer on the transmission side It is possible to provide services such as notifying a communication terminal by e-mail, and further notifying various information such as communication management data by e-mail. As described above, as one of the automatic conversion functions, it is also possible to convert data to be transferred into electronic mail and transfer it.

  FIG. 5 is an explanatory diagram showing an example of the operation when the time is specified in the system including the embodiment of the HTTP server of the present invention. Description overlapping with FIG. 4 is omitted. Although the basic flow of operation has been described with reference to FIG. 4, various applied communication functions can be executed as described above. FIG. 5 shows a case where time designation, which is one of applied communication functions, is performed.

  First, in (1), the communication terminal 3 designates a URL for transmission to the center server 1 and connects to the center server 1. In (2), the destination information, the terminal ID of the own device, etc. are transmitted together with the data to be transferred. It transmits to the center server 1. At this time, information related to time designation is also transmitted to the center server 1 as applied communication information.

  In the center server 1, the data to be transferred received from the communication terminal 3, the destination terminal ID, the terminal ID of the own apparatus, and the applied communication information are stored in the document database 14. At this time, for example, management information as shown in FIG. 3 is generated, and the fact that the time is specified as the application communication information is stored. The data is not transferred until the designated time arrives. That is, in (3), the communication terminal 5 as a transfer destination designates a reception URL to the center server 1 and connects to the center server 1, and then in (4) designates the terminal ID of the own device. If data reception is requested, even if there is data destined for the communication terminal 5, if there is data before the designated time, the center server 1 will not have data in (5) (or only other data) )return it.

  When the designated time arrives and then the reception of data is requested by designating the terminal ID of its own device in (6), the center server 1 will now specify the time according to the request from the communication terminal 5. The data that has been made is transferred to the communication terminal 5 in (7). In this way, data can be transferred to the transfer destination communication terminal after the time designated by the communication terminal 3 on the transmission side.

  The time designation function as described above can be designated for each transfer destination as well as for each data to be transferred. Further, until the designated time arrives, the transfer destination communication terminal does not know the existence of the data. Therefore, it is possible to delete the data up to the designated time in the communication terminal on the transmission side. In this case, in addition to instructing for each data to be transferred, designation for each transfer destination can be made possible.

  Although the case where the time is specified as the applied communication function is shown here, the present invention is not limited to this, and various applied communication functions can be provided. For example, an expiration date can be set and data can be transferred in response to a request from the destination communication terminal if it is within the expiration date, but no transfer can be performed when the expiration date has passed. . It should be noted that, within the validity period, it is preferable that the data is not automatically deleted in the instruction from the transfer destination communication terminal or in the center server 1 and can be deleted by the transmission side communication terminal or the operator of the center server 1. . In addition, after the expiration date, the data can be deleted, or can be retained so as to respond to a new expiration date setting or a retransmission instruction from the transmission side.

  As another application communication function, for example, when encryption communication is designated, at least communication between the center server 1 and the transfer destination communication terminal is performed by encryption communication. In this case, the communication between the communication terminal on the transmission side and the center server 1 is set in advance so as to perform communication by encrypted communication, or the encrypted communication is notified to the center server 1 prior to data transmission. It may be configured to transmit data after that. Note that the communication between the communication terminal on the transmission side and the center server 1 is not limited to data transfer, and encryption communication may always be performed according to settings.

  As another applied communication function, there may be provided a function of transferring various information (sub address, password, confidential information, etc.) together with the data to instruct the transfer destination communication terminal to perform processing after data reception.

It is a block diagram which shows an example of the system containing one Embodiment of the HTTP server of this invention. It is explanatory drawing of an example of the information which a terminal database memorize | stores. It is explanatory drawing of an example of the management information in a document database. It is explanatory drawing of the outline | summary of operation | movement of the system containing one Embodiment of the HTTP server of this invention. It is explanatory drawing of an example of operation | movement at the time of performing time designation in the system containing one Embodiment of the HTTP server of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Center server, 2 ... Data exchange network, 3-6 ... Communication terminal, 11 ... Communication part, 12 ... Control part, 13 ... Terminal database, 14 ... Document database.

Claims (5)

  Communication means for performing HTTP communication with a plurality of communication terminals, data storage means for storing data to be transferred received from the communication terminal via the communication means, and destination information indicating a transfer destination of the data, and the destination Control means for transmitting from the communication means so that the data is transferred to a destination communication terminal according to the information, the control means including data sent from the communication terminal with respect to a URL for transmission; Destination information is received and stored in the data storage means, and the data destined for the communication terminal is retrieved from the data storage means to the requesting communication terminal in accordance with a request from the communication terminal for the URL for reception. An HTTP server characterized by transferring.   2. The HTTP server according to claim 1, wherein the control unit returns whether or not data has arrived at a transfer destination in response to a reception confirmation request from the communication terminal.   If the time is specified when the data is received, the control means does not send the data in response to the request from the communication terminal for the URL for reception until the specified time arrives. The HTTP server according to claim 1 or 2.   If an expiration date is set when data is received, the control means does not send the data in response to a request from the communication terminal for a URL for reception after the expiration date has passed. The HTTP server according to claim 1, wherein the HTTP server is characterized.   5. The HTTP server according to claim 1, wherein the control unit authenticates at least a request from the communication terminal with respect to a reception URL. 6.

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