KR20030025621A - Traffic inspection method for network - Google Patents

Abstract

The present invention relates to a method of checking a traffic of a network that can measure network performance by testing at which point of a network of a mobile communication system, a message to be transmitted from a user to a target point on an OS prompt. A first step of receiving information and content about the structure; A second step of specifying a test option or output format desired by a user; A third step of transmitting a message generated through the first and second steps to a target point; A fourth step of receiving the response message from the target point and outputting the traffic check result in the form set in the second step can be achieved.

Description

How to check traffic on your network {TRAFFIC INSPECTION METHOD FOR NETWORK}

The present invention relates to a traffic checking method of a network, and more particularly, to a traffic checking method of a network that can measure network performance by testing at which point of a network of a mobile communication system.

The traffic check of the network outputs the number of messages sent and received, the number of lost messages, the number of corrupted messages, the number of out of order messages, etc., when a message fails to send or receive through the network during system operation. It is a way to see the situation, time, etc. when a problem occurs and to use it as data for debugging the problem.

In general, an operating system developer (OS: less than or equal to OS) writes a test program that sends and receives messages between two boards to measure whether the driver works normally after developing the OS or to measure performance. Do it.

Conventionally, a specific signal is defined to obtain traffic statistics for messages transmitted and received in a certain form between a source point and a destination point, and to check a network section (source point OS and target point OS). It was.

However, if the application is actually applied to the OS after checking as described above, according to the time unit for transmitting and receiving the message of the prescribed size and content used in the application, the driver error that was not conceived during the OS development was not found. You will find it.

Accordingly, an object of the present invention is to provide a method for checking a traffic of a network that can measure network performance by testing at which point of the network the traffic is generated. have.

The present invention for achieving the above object, the first step of receiving information and content on the message structure to be transmitted from the user to the target point on the OS (OS) prompt; A second step of specifying a test option or output format desired by a user; A third step of transmitting a message generated through the first and second steps to a target point; And a fourth step of receiving a response message from the target point and outputting a traffic check result in the form set in the second step.

1 is a flowchart illustrating a method for measuring performance of a network section according to the present invention.

2 is an exemplary view showing a traffic check result in accordance with the present invention.

3 is an exemplary view showing a command input process for checking network traffic according to the present invention.

4 is a flowchart illustrating a process of generating a structure of a transmission message for checking a traffic according to the present invention.

FIG. 5 is a flowchart illustrating a process of allocating a memory and assigning a variable name according to a data structure type and a field type in FIG.

6 is a flowchart illustrating a process of loading a message to be actually transmitted and received according to the present invention.

The present invention allows the OS developer to know information such as the message size, content, transmission time unit, etc. used in the application in advance, and to perform a test based on the information, so that a driver error can be detected and corrected more quickly. There is this.

In order to measure the performance of the network section, if an application used in practice is to be measured and executed, it is inconvenient to add debug functions for measuring and processing other functions of the application and sending and receiving messages.

Accordingly, in the present invention, in order to solve the above-mentioned inconvenience, the message is generated, transmitted / received and measured at the OS driver point without the process of modifying the application or transmitting and receiving the message.

In order to facilitate understanding in comparison with the present invention, a description will be given of a command (Ping) for checking the Internet connection status in the PC.

Ping is used to measure whether a packet is sent back to a specific IP address and sends a meaningless packet back to the server in response, and the time and speed it takes to return.

The ping command is a command commonly used by all operating systems. It can check the connection status with a desired URL or IP address.

In other words, if you enter [ping 202.30.143.11] in the command input window, the connection status with the DNS server of the corresponding Internet service is displayed.

If the PC is properly connected to the Internet, this ping command will result in packet transmission. If the ping command fails but the PC is not properly connected to the Internet or the server is dead. It can be.

Next, a method for measuring performance of a network section according to the present invention will be described with reference to FIG. 1.

The user inputs information and content (message structure and content actually received by the application of the target point) to be sent to the destination point on the OS prompt (command input window) (S101 and S102).

Next, a desired test option (period, number of transmitted messages, etc.) is specified (S103).

For example, if you want to see the number of messages sent / received and the number of damaged messages for a certain period of time, you can set the information as an option when you run the test program.

That is, in the case of inputting the ping command, the IP address is input after the ping command. However, in the present invention, various options to be outputted are designated or the contents thereof are the same as when the ping is executed. It is not a meaningless packet, but a message size and content used in an actual application.

Next, the message set as described above is transmitted to the target point (S104), and a response message is received from the target point (S105).

Then, as shown in Fig. 2, the received message coming in the response is outputted in the form set as the test option above (S106).

Hereinafter, a method of measuring performance of a network section according to FIG. 1 will be described in more detail with reference to the accompanying drawings.

First, FIG. 3 is an exemplary view showing a command input process for checking network traffic according to the present invention. When a command (CheckTraffic) is input, the user is asked about various items necessary for constructing a message, and the user responds to the message. Set up the structure and content.

Of course, you can simply answer yes or no, ask the viewer to pick and choose the answer, or let the user enter the content.

Next, FIG. 4 is a flowchart illustrating a process of generating a structure of a transmission message for traffic checking according to the present invention. The message structure table is initialized (S201), and the message structure is set by the method shown in FIG. S202).

In order to set the message structure, if there is a data structure type required by the application (S203), the depth of the data structure is increased by '1' (S204).

Next, the field type is determined (S205), the memory of each field type information is allocated, and the variable name of the message to be transmitted / received is allocated (S206). The processes S205 and S206 are repeated until the data structure is set (S207).

If there is no data structure type required by the application, since it is not necessary to allocate memory according to the field type information, only variable names of messages to be transmitted and received are allocated (S208).

The memory allocation and variable name allocation processes S206 and S208 according to the data structure type and the field type are specifically illustrated in FIG. 5.

That is, it is determined whether the field type is an integer, a real number, a character, or a string (S301 to S304). The memory of one column of the message structure table is allocated for the field type information (S305), and each message of the message to be transmitted and received is determined. Assign a variable name (S306).

If there is no field type, each variable name of a message to be immediately transmitted and received is assigned (S306) to generate a message structure.

For reference, in the case of data structure, there is no name and only the depth is increased by '1'. Basically, the depth of the field type is the same as the depth of the data structure mentioned above.

Therefore, when the message structure table is composed of 'type', 'name', and 'depth' items, instead of the depth value, the variable name of the message to be actually sent and received is put.

6 is a flowchart showing a process of loading a message to be actually transmitted and received according to the present invention. (S403), a pointer to the message structure table is obtained again (S404).

The message (S405) is transmitted (S405) by sequentially inputting the values of the variables (value of the depth item) received along the pointer from the first address of the allocated memory (S405).

The message transmission process has been described above. Hereinafter, a process for receiving a response of an application that receives the message transmitted as described above will be described.

When checking traffic while transmitting / receiving data at the OS level, fields for traffic control, such as sequence number and CRC, can be created, but an application may not know what message structure is to be used. The message structure received by ACK (Acknowledge) may be different, and there may be no field for sequence number depending on the purpose.

Therefore, in order to check traffic, it is necessary to know in advance the message structure to be transmitted and the message structure to be received.

In addition, if there is a message field that can act as a sequence number, if it is not found, the traffic check does not check for a situation in which the sequence is reversed or dropped, and only the quantity of messages sent and received is reported. do.

On the other hand, as described above, when the message is transmitted / received, the state (number of transmission / reception, number of CRC errors, number of changed or missing sequences) is stored, and the statistical value is output by the user or periodically.

As described above, the traffic checking method of the network of the present invention has an effect of measuring network performance by testing at which point of the network the traffic is applied.

Claims (9)

A first step of receiving information and content of a message structure to be transmitted from a user to a target point on an OS prompt; A second step of specifying a test option or output format desired by a user; A third step of transmitting a message generated through the first and second steps to a target point; And a fourth step of receiving a response message from a target point and outputting a traffic check result in the form set in the second step. The method of claim 1, wherein the information specified in the test option or output format includes a test time, a number of transmitted / received messages, a corrupted message count, and the like. The method of claim 1, wherein the generating of the transmission message based on the information input from the user comprises: a first step of initializing a message structure table and determining whether a data structure type required by an application is present; If there is a data structure type required by the application, increasing the depth of the data structure; Determining a field type for each data structure, allocating a memory of each field type information, and allocating a variable name of a message to be transmitted / received; And a fourth step of repeating the process of the third step until the setting of the data structure is completed. 4. The method of claim 3, wherein if there is no data structure type required by the application, only variable names of messages to be transmitted and received are allocated without allocating memory according to field type information. 2. The method of claim 1, wherein the memory allocation according to the field type determines a field type and allocates a row of memory of the message structure table according to the field type. 4. The method of claim 3, wherein the message structure table includes 'type', 'name', and 'depth' items of a message. 6. The method of claim 5, wherein the field type includes an integer, a real number, a character, a string, and the like. The method of claim 1, further comprising: a step of obtaining a pointer of a message structure table to transmit the generated message; Obtaining a total size of a message structure table according to the pointer, and allocating memory corresponding to the size; And a third step of obtaining a pointer of the message structure table and inserting values of the variables received along with the pointer, starting from the first address of the allocated memory, and transmitting the values sequentially. The method according to claim 8, wherein when transmitting a message or receiving a response to the message as described above, the sequence number of the transmitted / received message and the number of messages transmitted / received are stored, and the statistical value is stored in the user. A method for checking traffic in a network, characterized by outputting a request or a request periodically.