JP6728314B2 - Information processing apparatus, control method of information processing apparatus, and program - Google Patents

Description

The present invention relates to an information processing device, a method of controlling the information processing device, and a program.

In HTTP (HyperText Transfer Protocol), an information processing device establishes one connection with a server and executes data communication. As a technique for executing this data communication more efficiently, a plurality of connections are established between the information processing device and the server, the data is divided, and the divided data is communicated using the plurality of connections. The technology is known. In the following description, communication of divided data using a plurality of connections is called multi-connection communication.

When multi-connection communication is executed, since a plurality of connections can be used in parallel for communication, it can be executed more efficiently than when data is communicated using one connection. Patent Document 1 describes a technique in which an information processing device notifies a server of the maximum number of connections, and the server executes communication with the information processing device according to the notified maximum number of connections.

JP2012-95098A

For example, when the information processing apparatus transmits the divided data to the server using a plurality of connections, the information processing apparatus includes the Content-Range information in the header part of the HTTP packet and transmits the divided data to the server. The server receiving this HTTP packet can combine the plurality of pieces of divided data received using a plurality of connections into one original data by referring to the Content-Range information in the header part.

However, since specific header information such as Content-Range information is not indispensable information to support, some servers do not support multi-connection communication. On the other hand, Patent Document 1 assumes that the server supports multi-connection communication. Therefore, if the information processing apparatus of Patent Document 1 executes multi-connection communication to a server that does not support multi-connection communication, the processing ends in error and the information processing apparatus cannot execute communication with the server. I will end up.

Therefore, it is an object of the present invention to provide an information processing apparatus that executes communication using one connection instead of multi-connection communication when the server does not support multi-connection communication.

In order to solve the above problems, an information processing apparatus provided by the present invention is an information processing apparatus capable of executing multi-connection communication in which communication is performed using a plurality of connections, and whether the multi-connection communication is enabled. When setting whether to enable or disable multi-connection communication is set as the operation unit of the information processing apparatus and the operation setting is set as the operation setting , the external device as the communication partner supports the multi-connection communication. If it is determined that the external device supports the multi-connection communication by the determining device that determines whether or not the external device supports the multi-connection communication, the multi-connection communication with the external device is performed, and When the determination unit determines that the external device does not support the multi-connection communication, the communication unit executes the communication indicated by the execution instruction by using one connection, and the multi-connection communication is enabled. If that does not is set as the operation setting, the communication means, without performing determination by the determination means, that you perform the communication using a single connection between the external device Characterize.

Further, the information processing apparatus provided by the present invention is a communication means for executing multi-connection communication for communicating using a plurality of connections with an external device as a communication partner, and a response to the multi-connection communication for the external device. When the receiving means received from the device and the response received by the receiving means do not indicate an error, the communication means is controlled to continue the multi-connection communication, and the response received by the receiving means indicates an error, Control means for controlling the communication means so as to execute the communication indicated by the execution instruction by switching the communication method from the multi-connection communication to the communication using one connection.

Further, an information processing apparatus provided by the present invention is an information processing apparatus capable of executing multi-connection communication in which communication is performed using a plurality of connections, and whether or not to enable the multi-connection communication is determined by the information processing apparatus. When the setting means for setting as the operation setting of and the setting of enabling the multi-connection communication is set as the operation setting, the packet including the specific header information related to the multi-connection communication in the header part of the packet is set. Based on the transmitting means for transmitting to the external device using one connection, the receiving means for receiving the response packet for the packet transmitted by the transmitting means from the external device, and the response packet received by the receiving means. Whether to execute the multi-connection communication with the external device, or to execute the communication indicated by the execution instruction by using one connection without including the specific header information in the header part of the packet Deciding means for deciding that the multi-connection communication is not enabled as the operation setting, the deciding means transmits a packet including the specific header information by the transmitting means. None, characterized that you determined using one of the connections to perform communication with the external device can be.

According to the present invention, when a server does not support multi-connection communication, communication using one connection is executed instead of multi-connection communication. As a result, even if the server does not support multi-connection communication, communication can be executed instead of ending in error.

It is a figure which shows the whole system. 3 is a diagram showing a configuration of an information processing device 101. FIG. It is a figure which shows the screen for setting whether to perform multi-connection communication. 6 is a flowchart showing a process executed in the first embodiment. It is a figure which shows the screen regarding a data transmission process. It is a figure which shows the multi-connection communication at the time of transmitting data. It is a figure which shows multi-connection communication at the time of acquiring data. 9 is a flowchart showing a process executed in the second embodiment. FIG. 9 is a diagram illustrating multi-connection communication executed in the second embodiment. 3 is a diagram showing a table 1000 stored in the information processing device 101. FIG.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Note that the following embodiments do not limit the invention according to the claims, and all combinations of the features described in the embodiments are not necessarily essential to the solution means of the invention.

(Embodiment 1)
The configuration of the information processing system according to this embodiment will be described with reference to FIG. The information processing system includes an information processing apparatus 101 and a server 102, and the information processing apparatus 101 and the server 102 are communicably connected to each other via a network 103.

Next, the hardware configuration of the information processing apparatus 101 will be described with reference to FIG. The information processing apparatus 101 is a printing apparatus having a copy function, a print function, a scan function, a transmission function, and the like. In the present embodiment, a printing device will be described as an example of the information processing device 101, but the information processing device 101 is not limited to the printing device and may be any device that can execute communication with the server 102 (for example, a PC, a mobile phone, a smartphone, etc.). ..

The CPU 201 reads out the control program stored in the ROM 202 and controls the overall operation of the information processing apparatus 101. The RAM 203 is used as a main memory of the CPU 201 and a temporary storage area such as a work area. The HDD 204 stores various data such as font data, emulation programs, and form data.

In addition, in the case of the information processing apparatus 101, one CPU 201 executes each process shown in a flowchart described later, but other modes may be used. For example, a plurality of CPUs may cooperate with each other to execute each process shown in a flowchart described later.

The printer 205 executes print processing based on a print job or image data generated by the scanner 206. The scanner 206 reads a document and generates image data. The operation unit 207 includes a liquid crystal display unit having a touch panel function, a keyboard, and the like. The user can input an operation and an instruction to the information processing apparatus 101 via the operation unit 207. The network I/F 208 executes communication with an external device such as the server 102 via the network 103.

When transmitting certain data to the server 102, the information processing apparatus 101 can establish a plurality of connections (HTTP connections) with the server 102 and transmit the data using the plurality of connections. .. At this time, the data to be transmitted is divided into a predetermined size, and the divided data is transmitted to the server 102 in parallel using a plurality of connections. The server 102 can combine the received divided data and restore the original data. In addition, the information processing apparatus 101 can also establish a plurality of connections with the server 102 and acquire data using the plurality of connections even when acquiring certain data from the server 102.

In this way, a communication method for communicating divided data using a plurality of connections will be referred to as multi-connection communication in the following description. The information processing apparatus 101 supports multi-connection communication and can execute multi-connection communication. By executing the multi-connection communication, a plurality of connections can be used in parallel for communication, so that the communication can be executed more efficiently than when data is communicated using one connection. However, the external device (for example, the server 102) as the communication partner does not always support the multi-connection communication. Therefore, the information processing apparatus 101 of the present embodiment is characterized by switching the communication method to communication using one connection in response to the determination that the external device does not support multi-connection communication. The processing executed by the information processing apparatus 101 will be described in detail later with reference to the flowchart.

The screen 300 of FIG. 3 is a screen displayed by the operation unit 207. This screen 300 is a screen used by the user to set whether or not the information processing apparatus 101 executes multi-connection communication. When the user selects the button 301, the setting “execute multi-connection communication” is stored in the HDD 204. On the other hand, when the user selects the button 302, the setting “do not execute multi-connection communication” is stored in the HDD 204.

When the information processing apparatus 101 executes the multi-connection communication, the processing load of the CPU 201 increases. Therefore, if priority is given to reducing the processing load of the CPU 201, the user may select the button 302. On the other hand, when prioritizing speeding up of communication, the user may select the button 301.

As described above, the screen 300 allows the user to set whether to execute multi-connection communication. In the present embodiment, it is assumed that any user can set the screen 300, but only a specific user (for example, a user having administrator authority) can set the screen 300 by introducing a user authentication function in the information processing apparatus. May be enabled.

Next, the processing executed by the information processing apparatus 101 when performing multi-connection communication will be described with reference to the flowchart of FIG. Each step shown in the flowchart of FIG. 4 is processed by the CPU 201 loading a program stored in a memory such as the ROM 202 into the RAM 203 and executing the program. Further, the setting as to whether or not to execute the multi-connection communication is set by the user via the screen 300, and the set content is stored in the HDD 204.

First, in step S401, the CPU 201 receives a data communication execution instruction from a user. A screen 500 of FIG. 5 is a screen used when uploading a scan image (read image) generated by scanning an original by the scanner 206 to an external device such as the server 102, and is displayed by the operation unit 207. For example, when the button 501 on the screen 500 is pressed by the user, the CPU 201 receives an instruction to execute data communication in step S401.

Upon receiving the data communication execution instruction in step S401, the CPU 201 determines in step S402 whether to execute multi-connection communication. The determination in step S402 is performed by the CPU 201 referring to the setting set through the screen 300 and stored in the HDD 204. If the setting “execute multi-connection communication” is stored in the HDD 204, the CPU 201 determines that multi-connection communication will be executed, and the process proceeds to step S403. On the other hand, if the setting "Do not execute multi-connection communication" is stored in the HDD 204, the CPU 201 determines not to execute multi-connection communication, and proceeds to step S409.

Next, in step S403, the network I/F 208 establishes a plurality of HTTP connections with the server 102, and executes data communication using the plurality of HTTP connections. The data communication executed in step S403 will be described in detail with reference to FIG.

The information processing apparatus 101 establishes five HTTP connections when executing multi-connection communication. The number of five is merely an example, and may be another number according to the performance of the apparatus or a number set by the user. When the button 501 of FIG. 5 is pressed by the user, the information processing apparatus 101 divides the scan image into a predetermined size and uploads the divided data to five HTTP connections in order to upload the scan image to the server 102. Use and send to server 102. The header portion 601 of the packet includes Content-Range information, and indicates which byte of one piece of divided data is in the entire data. In the case of the header portion 601, it indicates that the divided data from the 0th byte to the 999th byte is transmitted. The server 102 that has received the divided data can combine the divided data into one original data by referring to the Content-Range information. Although not described in FIG. 6, Content-Range information is specified for all the divided data transmitted in S403.

Next, in step S404, the CPU 201 determines whether or not a response packet for the communication executed in step S403 has been received from the server 102. When the CPU 201 determines that the response packet has been received, the process proceeds to step S405, and when the CPU 201 determines that the response packet has not been received, it waits until the response packet is received.

Upon receiving the response packet from the server 102, in step S405, the CPU 201 determines whether the received response packet is a packet indicating an error response. If the server 102 supports Content-Range information, a response packet indicating successful reception is returned from the server 102. In the case of HTTP, the response packet indicating successful reception is an HTTP packet that includes “200:OK” or “201:Created” in the status code. When such a response packet indicating successful reception is received from the server 102, the CPU 201 determines that the received response packet is not a packet indicating an error response, and proceeds to step S406.

In step S406, the network I/F 208 uses the established HTTP connections to transmit the remaining divided data to the server 102. In other words, since it is known that the server 102 supports multi-connection communication, the information processing apparatus 101 continues multi-connection communication. Note that the communication executed in step S406 includes the Content-Range information in the header part of the packet, as in step S403.

On the other hand, when the CPU 201 determines that the response packet received in step S405 is a packet indicating an error response, the process proceeds to step S407. In step S407, the CPU 201 determines whether to switch the communication method.

When the server 102 does not support specific header information (for example, Content-Range), the information processing apparatus 101 receives an error response from the server 102. If the received error response is a response including “400: Bad Request” or “501: Not Implemented” in the status code, the information processing apparatus 101 may be able to communicate with the server 102 unless multi-connection communication is used. high. Therefore, in step S407, the CPU 201 determines whether to switch the communication method based on the type of the received error response.

When a specific error response such as “400: Bad Request” or “501: Not Implemented” is received from the server 102, the CPU 201 determines that the communication method is switched in step S407, and proceeds to step S409. On the other hand, when an error response such as the status code “500: Internal Server Error” is returned from the server 102, the information processing apparatus 101 cannot communicate with the server 102 even if the communication method is switched. Therefore, when a specific error response such as "500: Internal Server Error" is received from the server 102, the CPU 201 determines in step S407 that the communication method should not be switched, and proceeds to step S408.

In step S408, the CPU 201 ends in error. When the processing ends in error in step S408, the fact that the processing has ended in error may be displayed on the operation unit 207 or may be notified to a predetermined external device.

Next, step S409 will be described. In step S409, the network I/F 208 executes data communication with the server 102 using one HTTP connection. As the HTTP connection used at this time, any one of the plurality of HTTP connections established in S403 may be used, or one new HTTP connection may be established with the server 102. In this embodiment, the scanned image is transmitted to the server 102 using one HTTP connection in step S409. Since there is a high possibility that the server 102 that does not support the multi-connection communication discards the divided data transmitted in step S403, the divided image is transmitted from the beginning of the scanned image in step S409. Further, the communication executed in step S409 does not include specific header information related to multi-connection communication such as Content-Range information.

The process of step S409 is also executed when the CPU 201 determines not to execute the multi-connection communication in step S402. If it is determined in step S402 that the multi-connection communication is not executed, a plurality of HTTP connections have not been established with the server 102. The network I/F 208 establishes one HTTP connection with the server 102 and executes communication.

As described above, the information processing apparatus 101 can switch the communication method to the communication using one HTTP connection in response to the determination that the server does not support the multi-connection communication. As a result, even if the server does not support multi-connection communication, data communication with the server can be executed without terminating with an error.

Note that in the description of the flowchart of FIG. 4, the data transmission process in which the information processing apparatus 101 transmits data to the server 102 is described as an example of multi-connection communication, but the flowchart of FIG. 4 is not limited to the transmission process. .. The flowchart of FIG. 4 can also be applied to the data acquisition process in which the information processing apparatus 101 acquires data from the server 102.

The processing executed when the information processing apparatus 101 acquires data from the server 102 will be described with reference to FIGS. 4 and 7. In the flowchart of FIG. 4, steps for performing processing different from the above-described transmission processing will be described in detail, and description of steps for performing similar processing will be omitted. Further, as the data acquisition process, a process in which the information processing apparatus 101 acquires print data from the server 102 and the printer 205 executes printing will be described as an example.

In step S403, the network I/F 208 establishes a plurality of HTTP connections with the server 102, and transmits an HTTP GET request for acquiring print data to the server 102 using the plurality of HTTP connections. .. The transmission of this GET request is shown in FIG. The header information 701 of the packet transmitted to the server 102 includes Range information. Although not shown in FIG. 7, the GET request packet transmitted in S403 includes all Range information. This Range information is information for designating the range of print data to be acquired, and in the case of the header portion 701, it means that the print data of the 0th byte to the 999th byte is requested to the server 102. Since the Range information is not essential to be supported, some servers may not support the multi-connection communication using the Range information, like the Content-Range information.

When the server 102 that has received the GET request in FIG. 6 supports Range information, that is, supports multi-connection communication, the server 102 causes the information processing apparatus 101 to print data in a range specified by the Range information. To send. The information processing apparatus 101 that receives this response determines that the response received in step S405 is not an error response, and executes multi-connection communication also when obtaining the remaining print data in step S406. When the reception of the entire print data is completed, the printer 205 executes the print processing based on the received print data.

On the other hand, when the server 102 that receives the GET request in FIG. 6 does not support Range information, that is, when it does not support multi-connection communication, the server 102 returns an error response to the information processing device. The error response transmitted by the server 102 at this time is an error response including “400: Bad Request” and “501: Not Implemented” in the status code, as in the description of FIG. 4. Upon receiving this response, the information processing apparatus 101 determines to switch the communication method in step S407, and acquires print data from the server 102 using one HTTP connection in step S409. In step S409, the GET request transmitted from the information processing apparatus 101 to the server 102 does not include Range information. When the reception of the print data is completed, the printer 205 executes the print processing based on the received print data.

As described above, whether the data transmission process or the data acquisition process is performed, the information processing apparatus 101 changes the communication method with the server that does not support the multi-connection communication to the communication using one HTTP connection. You can switch.

(Embodiment 2)
In the first embodiment, a plurality of HTTP connections are established in step S403 to execute multi-connection communication, and it is determined whether the server 102 supports multi-connection communication based on the response received from the server 102. The configuration has been described. On the other hand, in the present embodiment, as a modification of the first embodiment, first, communication using one connection is executed, and it is determined whether the server 102 supports multi-connection communication based on the response. The configuration will be described.

The processing executed by the information processing apparatus 101 when performing multi-connection communication in this embodiment will be described with reference to the flowchart of FIG. Each step shown in the flowchart of FIG. 8 is processed by the CPU 201 loading a program stored in a memory such as the ROM 202 into the RAM 203 and executing the program. Note that among the steps in FIG. 8, steps having the same numbers as those in the flowchart in FIG. 4 perform the same processing as in FIG. 4, so detailed description thereof will be omitted.

When the CPU 201 determines to execute the multi-connection communication in step S402, the process proceeds to step S801. Then, in step S801, the network I/F 208 establishes one HTTP connection with the server, and executes data communication using this one HTTP connection. The data communication executed in step S801 will be described in detail with reference to FIG.

Unlike step S403 and FIG. 7 of FIG. 4, the information processing apparatus 101 establishes one HTTP connection with the server 102 instead of a plurality of HTTP connections. FIG. 9A shows an example of a process in which the information processing apparatus 101 transmits data (for example, a scanned image) to the server 102. The header section 901 of the divided data transmitted by the information processing apparatus 101 includes specific header information (Content-Range information in the case of FIG. 9) related to multi-connection communication. Therefore, the information processing apparatus 101 can determine whether the server 102 supports multi-connection communication based on the response received from the server 102.

When the data including the specific header information (Content-Range information) is transmitted to the server 102 using one HTTP connection in step S801, the information processing apparatus 101 receives a response to the communication from the server 102. Then, in step S405, the CPU 201 determines whether the received response packet is a packet indicating an error response.

When the CPU 201 determines that the received response packet is not a packet indicating an error response, the process proceeds to step S802, and the network I/F 208 executes multi-connection communication. In step S802, as shown in FIG. 9B, the information processing apparatus 101 establishes a plurality of HTTP connections with the server 102, and executes data communication using the plurality of HTTP connections. The header part 911 includes Content-Range information.

On the other hand, if the received response packet is a packet indicating an error response and the error content is a specific error (“400: Bad Request” or “501: Not Implemented”), the process proceeds to step S803. In step S803, similar to step S409 of FIG. 4, one HTTP is used to perform data communication with the server 102. At this time, since the server 102 does not support multi-connection communication, unlike step S801, data communication is executed without using specific header information such as Content-Range information.

A comparison between the present embodiment and the first embodiment is that in step S801, one HTTP connection is used instead of a plurality of HTTP connections. In step S801, the following effects are obtained by using one HTTP connection instead of a plurality of HTTP connections.

Since communication using a plurality of HTTP connections increases the processing load on both the information processing apparatus 101 and the server 102, it is desirable to reduce this processing load as much as possible. Therefore, it is possible to reduce the processing load on both the information processing apparatus 101 and the server 102 by executing communication using one HTTP connection until it is determined whether the server 102 supports multi-connection communication. it can.

(Embodiment 3)
In step S407 of FIG. 4 and FIG. 8, it is switched whether to execute communication using one HTTP connection or to end in error, based on the type of the received error response, but other forms are possible. May be. For example, when the CPU 201 determines that the error response is received in step S405, the communication method may be uniformly switched from the multi-connection communication to the communication using one HTTP connection regardless of the type of the error response.

(Embodiment 4)
In each of the above-described embodiments, it is determined whether or not the server supports multi-connection communication every time an instruction to execute data communication is received from the user, but other forms may be used. For example, when communicating for the first time, it may be determined whether or not the server supports multi-connection communication, and the determination result and identification information indicating the server may be associated and stored in a memory such as the HDD 204. Then, when executing the second and subsequent communications, it may be determined whether or not to perform the multi-connection communication by referring to the information stored in the memory such as the HDD 204.

The table 1000 of FIG. 10 is a table for the information processing apparatus 101 to store whether or not the server, which once communicated, supports multi-connection communication, and is stored in the HDD 204. When the response is received from the server in step S404 of FIG. 4 or FIG. 8 and the response does not indicate an error, the information processing apparatus 101 determines that the server of the communication partner supports multi-connection communication in the table 1000. Remember. On the other hand, if the response indicates the received error, the information processing apparatus 101 stores in the table 1000 that the server of the communication partner does not support multi-connection communication.

The item 1001 stores identification information indicating a server. Items 1002 and 1003 store whether or not the server supports multi-connection communication for each of the data transmission process and the data acquisition process. The data transmission process and the data acquisition process are stored separately because the header information used by each is different, and some servers may support only one of them.

For example, when it is determined in step S402 in FIG. 4 or 8 that multi-connection communication is to be executed, the table 1000 is referred to and it is determined whether or not the server as the communication partner supports multi-connection communication. If the information indicating the server as the communication partner is stored in the table 1000, whether to execute the multi-connection communication or not to execute the multi-connection communication may be determined according to the stored determination result. As a result, wasteful communication is executed when the second and subsequent communication is executed with the server that does not support the multi-connection communication (step S403 of FIG. 4 and FIG. 8 for the server that does not support the multi-connection communication). Execution of step S801) can be prevented.

On the other hand, when the information indicating the server is not stored in the table 1000 (for example, when communicating for the first time), the processing of step S403 of FIG. 4 and step S801 of FIG. It may be determined whether or not Then, the determination result may be stored in the table 1000, and the stored information may be referred to when executing the communication from the next time.

(Other embodiments)
The present invention is also realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or device via a network or various storage media, and the computer (or CPU, MPU, etc.) of the system or device reads the program. This is the process to be executed.

101 information processing device 102 server 201 CPU
202 ROM
203 RAM
204 HDD
208 Network I/F

Claims (21)

An information processing device capable of performing multi-connection communication, which communicates using a plurality of connections,
Setting means for setting whether or not to enable multi-connection communication as an operation setting of the information processing device,
When enabling the multi-connection communication is set as the operation setting, a determination means for determining whether the external device as a communication partner supports the multi-connection communication,
When the determination unit determines that the external device supports the multi-connection communication, the multi-connection communication is executed with the external device, and the determination unit causes the external device to perform the multi-connection communication. Communication means that executes communication using one connection with the external device when it is determined that the device does not support
Equipped with
When it is set as the operation setting that multi-connection communication is not enabled, the communication unit performs communication using one connection with the external device without performing the determination by the determination unit. An information processing device characterized by executing. The communication means executes communication for determining whether or not an external device that is a communication partner supports the multi-connection communication when enabling the multi-connection communication is set as the operation setting. Then
The information processing apparatus according to claim 1, wherein the determination unit determines whether or not the external device supports the multi-connection communication based on a response of the external device to the communication. The information processing apparatus according to claim 2, wherein when the response of the external device indicates an error, the determining unit determines that the external device does not support the multi-connection communication. When the determination unit determines that the external device does not support the multi-connection communication, the communication unit uses one connection to perform communication with the external device, or ends in error. The information processing apparatus according to claim 3, wherein whether to perform the determination is determined based on the type of error. Further comprising a receiving means for receiving a communication execution instruction,
5. The determining unit determines whether or not the external device supports the multi-connection communication in accordance with the receiving unit receiving the execution instruction. The information processing device according to item. A communication means for executing multi-connection communication for communicating using a plurality of connections with an external device as a communication partner,
Receiving means for receiving a response to the multi-connection communication from the external device,
When the response received by the receiving means does not indicate an error, the communication means is controlled to continue the multi-connection communication, and when the response received by the receiving means indicates an error, the communication method is changed from the multi-connection communication. Control means for controlling the communication means to switch to communication using one connection;
An information processing apparatus comprising: When the response received by the receiving unit indicates an error, the control unit determines whether to execute communication with the external device using one connection or to determine whether to end in error. The information processing device according to claim 6, wherein the information processing device is determined based on. Further comprising a receiving means for receiving a communication execution instruction,
8. The communication unit executes the multi-connection communication with the external device when the reception unit receives the execution instruction, and the communication unit executes the multi-connection communication with the external device. Information processing device. When the communication unit performs the multi-connection communication, the header portion of the packet includes specific header information,
9. The header section of a packet does not include the specific header information when the communication section executes communication using one connection, and the specific header information is not included in the packet header section. Information processing device. An information processing device capable of performing multi-connection communication, which communicates using a plurality of connections,
Setting means for setting whether or not to enable the multi-connection communication as an operation setting of the information processing device,
When enabling the multi-connection communication is set as the operation setting, the packet including the specific header information related to the multi-connection communication in the header part of the packet is transferred to the outside using one connection. Transmitting means for transmitting to the device,
Receiving means for receiving from the external device a response packet to the packet transmitted by the transmitting means,
Based on the response packet received by the receiving means, the multi-connection communication is executed with the external device, or one connection is used without including the specific header information in the header part of the packet. Determining means for determining whether to execute communication with the external device,
Equipped with
When it is set as the operation setting that the multi-connection communication is not enabled, the determining unit uses one connection without transmitting a packet including the specific header information by the transmitting unit. Then, the information processing apparatus determines to execute communication with the external device. Further comprising a receiving means for receiving a communication execution instruction,
11. The transmission unit transmits a packet including the specific header information to an external device using one connection in response to the reception of the execution instruction by the reception unit. Information processing equipment. When the response packet is not a packet indicating an error, the determining unit determines to execute the multi-connection communication, and when the response packet is a packet indicating an error, the determining unit includes the packet in the header portion of the packet. The information processing apparatus according to claim 10 or 11, wherein the information processing apparatus determines to perform communication with the external apparatus using one connection without including specific header information. When the response packet is a packet indicating an error, the determining unit executes communication with the external device by using one connection without including the specific header information in the header part of the packet, or The information processing apparatus according to claim 12, wherein whether to end the error is determined based on the type of the error. The information processing apparatus according to claim 9, wherein the specific header information is HTTP Content-Range. 14. The information processing apparatus according to claim 9, wherein the specific header information is HTTP Range. Further comprising a reading means for reading the original and generating image data,
16. The multi-connection communication is a process of dividing the image data and transmitting the divided image data to the external device using a plurality of connections. The information processing device according to item. Further comprising printing means,
The multi-connection communication is a process of acquiring divided print data from the external device using a plurality of connections,
The information processing apparatus according to any one of claims 1 to 16, wherein the printing unit executes printing based on print data acquired from the external device. A method for controlling an information processing device capable of performing multi-connection communication, which uses a plurality of connections for communication,
A setting step of setting whether to enable multi-connection communication as an operation setting of the information processing device;
When enabling multi-connection communication is set as the operation setting, a determination step of determining whether the external device that is a communication partner supports the multi-connection communication,
When it is determined in the determination step that the external device supports the multi-connection communication, the multi-connection communication is executed with the external device, and in the determination step, the external device performs the multi-connection communication. And a communication step of performing communication using one connection with the external device when it is determined that
Have
When it is set as the operation setting that multi-connection communication is not enabled, in the communication step, communication using one connection is performed with the external device without performing the judgment in the judgment step. A method for controlling an information processing apparatus, characterized by executing the method. A method of controlling an information processing device, comprising:
A communication step of executing multi-connection communication for communication using a plurality of connections with an external device as a communication partner,
A receiving step of receiving a response to the multi-connection communication from the external device,
If the response received in the receiving step does not indicate an error, the multi-connection communication is continued, and if the response received in the receiving step indicates an error, the communication method is communication using one connection from the multi-connection communication. Control step to control to switch to,
A method for controlling an information processing device, comprising: A method for controlling an information processing device capable of performing multi-connection communication, which uses a plurality of connections for communication,
A setting step of setting whether or not to enable the multi-connection communication as an operation setting of the information processing device;
When enabling the multi-connection communication is set as the operation setting, the packet including the specific header information related to the multi-connection communication in the header part of the packet is transferred to the outside using one connection. A transmitting step for transmitting to the device,
A receiving step of receiving a response packet for the packet transmitted in the transmitting step from the external device,
Based on the response packet received in the receiving step, the multi-connection communication is executed with the external device, or one connection is used without including the specific header information in the header part of the packet. And a determining step of determining whether to perform communication with the external device,
Have
If it does not enable the multi-connection communication is set as the operation setting, in the determination step, without sending the packet containing the specific header information I by the said transmission step, one A method for controlling an information processing device, characterized in that it is determined to perform communication with the external device using a connection. A program for causing a computer to operate as the information processing apparatus according to claim 1.

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