JPH1132084A - Communication connection control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten turn-around time by storing connection success time for each connection party, transmitting a communication means to the connection party and notifying the communication error to a host device, in the case of not receiving a response from the connection party even after the lapse of time for which average time obtained from a connection time means stored in a storage means is multiplied by a predetermined prescribed number. SOLUTION: An arithmetic means 6 obtains the initial value of the time required for the success of connection for each connection party from a connection success time initial value setting means 5 and sets it to the storage means 4. In the case that there is a communication connection request from a host module 8, the communication connection request is transmitted to the communication connection party by a request transmission means 1. In the case that a response reception means 2 receives the response from the communication connection party, the time required for the success of the connection is stored in the storage means 4 by a time measurement means 3. In the case of waiting for the reception of the response of communication connection, even after the lapse of the double of the connection success time, the host module 8 is notified as a communication connection error.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a communication connection control method, and more particularly, to a TCP / IP (Transport Control Protocol) used as a connection protocol between computers.
The present invention relates to a connection error retry method suitable for use in a connection control method of an Internet Protocol (Internet Protocol / Internet Protocol).

[0002]

2. Description of the Related Art In a conventional communication connection control system, a connection retry in the case of a communication connection error is performed for a predetermined time or a predetermined number of times. Then, even if the connection retry is performed a predetermined number of times, when a connection error occurs, the connection error is notified to the host device.

[0003] As this kind of retry control, for example, Japanese Patent Laid-Open Publication No. Hei 1-206475 discloses that a predetermined number of times is set to a maximum, a standby is performed for a predetermined time, and a connection operation is performed again. A portable electronic device that repeats a connection operation up to a preset number of retries is disclosed.

[0004]

The above-mentioned conventional communication connection control method has a problem that a turnaround time until a connection error is notified to an upper module is slow.

[0005] The reason is that even if it is possible to determine in a short time that there is a problem with the connection partner or the communication path, the connection error retry is performed for a certain time or a certain number of times.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a communication connection control method for shortening a turnaround time until a connection error is notified to an upper module. It is in.

[0007]

In order to achieve the above object, according to the communication connection control method of the present invention, a time required for successful connection with a connection partner (referred to as "connection success time") is stored for each connection partner. After transmitting a communication connection request to the connection partner, even if a predetermined multiple of the average time obtained from the connection success time stored in the storage means has elapsed, the time has elapsed. When a response is not received from the connection partner, a communication error is notified to the host device.

Further, the present invention measures the time from when a response is received from the connection partner until the connection succeeds when transmitting a connection request to the connection partner, and based on the time required for the connection, the storage means Means for updating the stored connection success time of the connection partner.

Further, the present invention is characterized in that the storage means includes means for setting an initial value of the connection success time for each connection partner.

[0010]

Embodiments of the present invention will be described below. The present invention, in a preferred embodiment thereof, means for transmitting a communication connection request (1 in FIG. 1)
And means for receiving a communication connection response (2 in FIG. 1)
, Time measuring means (3 in FIG. 1), storage means (4 in FIG. 1) for storing the connection success time for each connection partner, and means for setting the initial value of the connection success time stored in the storage means (4). FIG.
5) and arithmetic means (6 in FIG. 1), and an initial value required for successful connection for each connection partner is set in the storage means by the connection success time initial value setting means, and the request transmission means ( When a communication connection request is transmitted from 1) in FIG. 1 to a communication partner, the time required for successful connection is measured by a time measuring unit (3 in FIG. 1), and a storage unit (FIG. After the communication connection request is transmitted from the request transmitting unit, the response receiving unit cannot receive a response even if twice the average value of the time required for successful connection has elapsed after transmission of the communication connection request from the request transmitting unit. In this case, a communication error is notified to the upper module (8 in FIG. 1).

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 1 is a diagram showing the configuration of one embodiment of the present invention.

Referring to FIG. 1, in one embodiment of the present invention, communication connection means 7 includes request transmission means 1, response reception means 2, time measurement means 3, and storage means 4.
Connection success time initial value setting means 5, calculation means 6,
, And has an interface with the upper-level module 8 via the arithmetic means 6.

FIG. 2 is a flowchart showing a processing flow in the calculating means 6 in one embodiment of the present invention.

First, the calculating means 6 obtains the initial value of the time required for successful connection for each connection partner from the connection success time initial value setting means 5 and sets the initial value in the storage means 4 (step 11).

Next, it is determined whether or not to end the processing (step 12), and when it is determined that the processing is to be ended, the processing is ended.

If it is determined in step 12 that the process is not to be terminated, it is determined whether or not there is a communication connection request from the upper module 8 (step 13). Upper module 8
If there is no communication connection request (No in step 13), the process returns to step 12, and if there is a communication connection request from the upper module 8 (Yes in step 13), the process goes to step 54.

The communication connection request is transmitted to the communication connection partner by the request transmission means 1 (step 1).
4).

Next, it is determined by the response receiving means 2 whether a response has been received from the communication partner (step 15).

When a response is received from the communication partner, it is determined whether or not the connection has succeeded (step 16).

If the connection fails (NO in step 16)
(Branch), a communication connection error notification is sent to the upper module 8 (step 17), and the process returns to step 12.

If the determination in step 16 is YES, the time required for successful connection is obtained by the time measuring means 3 and stored in the storage means 4 and the connection success stored in the storage means 4 is stored. The average of the connection success time is calculated from the time (step 20), and the upper module 8
Is notified of the normal end of the communication connection (step 2
1).

If the response of the communication connection is not received (No branch of step 15), it is determined whether or not twice the average time of the connection success time of the connection partner has elapsed (step 18).

If twice the average time of the connection success time of the connection partner has not elapsed, the process returns to step 55 and waits for a response of the communication connection, and waits for the average of the connection success time of the connection partner. If twice the time has elapsed (Yes branch of step 18), the upper module 8 is notified of an error in communication connection (step 19).

According to the present embodiment, the turnaround time for notifying the upper module 8 of a communication connection error can be reduced to twice the average time required for successful connection of the connection partner. it can.

[0025]

As described above, according to the present invention,
This has the effect that the turnaround time required for notifying the higher-level module of a communication connection error can be significantly reduced as compared with the related art. For example,
According to the present invention, it is possible to reduce the turnaround time required for notifying a higher-level module of a communication connection error to twice the average time required for successful connection of a connection partner.

The reason for this is that, in the present invention, the time required for successful connection for each communication partner is stored in the storage means by the connection success time initial value setting means, and the time required for connection is stored in the storage means. If a response cannot be received by the response receiving unit even after elapse of, for example, twice the average value of the time required for successful connection to the connection partner after transmitting the request, a communication error is notified. It is.

[Brief description of the drawings]

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

FIG. 2 is a flowchart illustrating a processing flow according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Request sending throw 2 Response receiving means 3 Time measuring means 4 Memory throwing 5 Connection success time initial value setting means 6 Computing means 7 Communication control means 8 Upper module 51-72 Processing steps

Claims (5)

[Claims] 1. A time required for successful connection with a connection partner (referred to as "connection success time") is stored in a storage unit for each connection partner, and after a communication connection request is transmitted to the connection partner, the storage is performed. Notifying a higher-level module of a communication error when a response has not been received from the connection partner even after a lapse of a predetermined multiple of the average time obtained from the connection success time stored in the means, A communication connection control method characterized by the following. 2. When the connection request is transmitted to the connection partner, a time period from when a response is received from the connection partner until the connection succeeds is measured, and the time stored in the storage means is stored based on the time required for the connection. 2. The communication connection control method according to claim 1, further comprising means for updating a connection success time of a connection partner. 3. The communication connection control method according to claim 1, wherein said storage means includes means for setting an initial value of the connection success time for each connection partner. 4. A communication control method in a TCP / IP protocol, comprising: a request transmitting unit, a response receiving unit, a time measuring unit, a storage unit, a connection success time initial value setting unit, and an arithmetic unit. The connection success time initial value setting means sets an initial value required for successful connection for each connection partner in the storage means, and transmits a communication connection request to the communication connection partner from the request transmission means. The time required for successful connection is measured by the time measurement means and stored in the storage means for each connection partner. After transmitting a communication connection request from the request transmission means, the connection to the connection partner is successfully completed. If a response cannot be received by the response receiving unit even after a predetermined multiple of the average value of the time required for the communication has elapsed, a communication error is notified. A communication connection control method characterized by the following. 5. A response cannot be received by the response receiving means even if twice the average value of the time required for successful connection to the connection partner has elapsed after transmitting the communication connection request from the request transmitting means. 5. The communication connection control method according to claim 4, wherein in the case, a communication error is notified to an upper module.