CN117527650A - Flow testing method, equipment and storage medium - Google Patents

Flow testing method, equipment and storage medium Download PDF

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Publication number
CN117527650A
CN117527650A CN202311565739.2A CN202311565739A CN117527650A CN 117527650 A CN117527650 A CN 117527650A CN 202311565739 A CN202311565739 A CN 202311565739A CN 117527650 A CN117527650 A CN 117527650A
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China
Prior art keywords
flow
tester
layer
test
traffic
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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CN202311565739.2A
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Chinese (zh)
Inventor
邱宇
王焱
国路
兰星
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Chengdu DBAPPSecurity Co Ltd
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Chengdu DBAPPSecurity Co Ltd
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Priority to CN202311565739.2A priority Critical patent/CN117527650A/en
Publication of CN117527650A publication Critical patent/CN117527650A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0876—Network utilisation, e.g. volume of load or congestion level
    • H04L43/0894—Packet rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/14—Arrangements for monitoring or testing data switching networks using software, i.e. software packages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention discloses a flow test method, flow test equipment and a storage medium, comprising the steps of obtaining a tester interface; initializing link information of a tester and tested equipment; initializing a flow template; the flow template can be called by a test case and is used for configuring a basic attribute layer, a physical layer, a data link layer, a network layer, a transmission layer and an application layer of the flow; and adding the flow template to a tester, generating test flow and carrying out flow test on the tested equipment. The method ensures that an automation developer can be suitable for different physical testers and virtual testers only by writing a set of test libraries, is used for testing the flow of the equipment to be tested, and solves the problems that the automation test environment changes, the flow testers are newly added, and test cases need to be rewritten when test schemes are required to be designed for different network data transmission levels.

Description

Flow testing method, equipment and storage medium
Technical Field
The invention belongs to the technical field of automatic testing, and particularly relates to a flow testing method, flow testing equipment and a storage medium.
Background
The control modes of the current testers of different manufacturers are completely different, for example, the testers of the manufacturer A are controlled by using a RESTful (Representational State Transfer a software architecture style) mode, wherein the control key word of the parameter of the IPv4 source address is key_word1. The tester of vendor B uses TCL (Tool Command Language, a scripting language) mode to control, wherein the control key of the parameter of the IPv4 source address is key_word2. For automation use cases it is only intended to control the same parameters, but completely different command systems and keywords are required for different testers. The method greatly increases the writing difficulty of the automatic test cases and reduces the efficiency and the maintenance difficulty of writing the automatic test cases.
The existing unified control schemes of the disclosed testers are limited to controlling physical tester equipment, and the physical testers need to purchase licenses and equipment from tester manufacturers, which increases the cost of building an automatic flow test platform.
Disclosure of Invention
The invention aims to provide a flow test method, flow test equipment and a storage medium, which are used for solving the problems of low efficiency and high maintenance difficulty caused by the fact that different test cases are required to be written for different testers.
The invention is realized by the following technical scheme:
in one aspect, the present invention provides a flow test method, including the steps of:
s02, acquiring a tester interface;
s04, initializing a tester and link information of tested equipment; the Link information Link includes at least: tester port rate, tester port name, tester port MAC address, tester port IP address, device under test port rate, device under test port name, device under test port MAC address, device under test port IP address;
s06, initializing a flow template; the flow template can be called by a test case and is used for configuring a basic attribute layer, a physical layer, a data link layer, a network layer, a transmission layer and an application layer of the flow;
and S08, adding the flow template to the tester, generating test flow and carrying out flow test on the tested equipment.
In some embodiments, in step S08, a test case is executed, the current tester type is determined, and the flow template configures the tester according to different tester types to generate a test flow; the tester types include a physical tester, a virtual tester for a data link layer and a network layer, and a virtual tester for an application layer.
In some embodiments, when the tester is a physical tester, the generation of the test flow includes the steps of:
calling an API of a tester, and creating flow;
calling an API of a tester, and writing link information in a packet sending direction into a source interface/MAC/IP of the flow;
calling an API of a tester, and writing link information in a packet sending direction into a destination interface/MAC/IP of the flow;
calling an API of the tester, and writing transport layer data configured by the flow template into the flow;
test traffic is generated and sent.
In some embodiments, when the tester is a virtual tester for a data link layer, a network layer, the generation of test traffic includes the steps of:
invoking an OTG component to create traffic;
invoking a snappi function of the OTG component, and writing link information in a packet sending direction into a source interface/MAC/IP of the flow;
invoking a snappi function of the OTG component, and writing link information in a packet sending direction into a destination interface/MAC/IP of the flow;
calling a snappi function of the OTG component, and writing transport layer data configured by a flow template into the flow;
test traffic is generated and sent.
In some embodiments, when the tester is a virtual tester for an application layer, the generation of test traffic includes the steps of:
corresponding application service is started according to the flow template configuration;
test traffic is generated and sent.
In some embodiments, in step S04, the tester link information includes a tester port rate, a tester port name, a tester port MAC address, a tester port IP address;
the tested device link information comprises tested device port rate, tested device port name, tested device port MAC address and tested device port IP address.
In some embodiments, in step S06, the configuration operation of the traffic template on the basic attribute layer, the physical layer, the data link layer, the network layer, the transport layer, and the application layer of the traffic includes:
configuring link information in a receiving/transmitting packet direction, frame size, transmission mode, transmission rate and head types of each layer in a basic attribute layer;
configuring the physical medium type interface rate at the physical layer;
configuring source MAC, destination MAC, protocol type, CRC check and VLAN at a quantity link layer;
configuring the IP header type and the ARP header type at a network layer;
configuring UDP header type and TCP header type at a transmission layer;
the HTTP application type, the FTP application type, the Mail application type and the Linux application type are configured at the application layer.
In some embodiments, when generating the test traffic to perform the traffic test on the device under test in step S08, the method further includes the steps of starting packet capturing, stopping sending traffic, and stopping packet capturing.
In another aspect, the present invention also provides an electronic device, including: a memory for storing a computer program; and the processor is used for realizing the flow test method when executing the program stored in the memory.
In another aspect, the present invention further provides a computer readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the flow test method is implemented.
Compared with the prior art, the invention has the following advantages:
the invention adopts unified Link information, utilizes the flow template to configure and classify different testers and different network data transmission levels, and an automation developer can be suitable for different physical testers and virtual testers only by writing a set of test libraries for flow test of equipment to be tested, thereby solving the problems that the automation test environment changes, the flow testers are newly added, and test cases need to be rewritten when test schemes are designed for different network data transmission levels.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a test framework of the present invention;
FIG. 2 is a flow chart of an embodiment of a flow test method according to the present invention;
FIG. 3 is a schematic diagram showing Link information interaction between a tester and a device under test in the method of the present invention;
FIG. 4 is a flow template configuration information diagram in the method of the present invention;
FIG. 5 is a flow chart of test flow generation in the method of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the following detailed description of specific embodiments thereof is given with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present application are shown in the accompanying drawings. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently, or at the same time. Furthermore, the order of the operations may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Related word sense interpretation:
OTG: open Traffic Generator component, the northbound API specification of modern traffic generators and protocol emulators, is intended to test layer 2-7 network devices. Applicable to flow generators and protocol emulators such as Ixia-c, keysightElastic Network Generator, ixNetwork, magna, trex, etc.
OSI model: open System Interconnection Model, open system interconnection communication reference model;
TTL: time To Live, time To Live;
ARP: address Resolution Protocol, address resolution protocol;
I/O: input/Output, input/Output.
In one aspect, the present invention provides a flow test method.
Referring to fig. 1, the flow test method includes:
s10, initializing an environment: readiness operation for supporting basic operation of the automated test framework. Illustratively, the device under test is logged in, the program execution resources are pre-allocated, and the necessary components are loaded.
S20, pre-operation: for the test case executed this time, an operation to be performed before execution is performed. Illustratively, it is checked whether the test device is able to surf the internet, and whether an IP address needs to be configured for the interface.
S30, executing the test case: the flow template is mainly called in the step, and when the test case needs to send the flow, the flow template is called to generate the flow and send the flow. Meanwhile, a monitoring tool is used for capturing packets to obtain messages forwarded by tested equipment, and whether the content in the messages accords with expectations or not is checked.
S40, post-operation: the cleaning operation is carried out after the test case is executed, so that the aim of avoiding influencing the execution of the next test case is achieved. Exemplary includes clearing the configuration issued during the execution of the present test case.
The operation of the test case calling the flow template to generate the flow and sending the flow in step S30, referring to fig. 2, includes the following steps:
s301, acquiring a tester interface; and occupying a port of the tester for maintaining the operations of sending flow, grabbing packets and the like of the current session.
S302, connecting tested equipment and a tester, and initializing the tester and Link information Link of the tested equipment; referring to fig. 3, the Link information Link of the tester and the device under test at least includes: tester port rate, tester port name, tester port MAC address, tester port IP address, device under test port rate, device under test port name, device under test port MAC address, device under test port IP address. By initializing Link information of the tester and the tested equipment, the writing difficulty of the flow template can be greatly reduced.
S303, initializing a flow template;
referring to fig. 4, initializing a flow template according to the type of a tester, a flow standard and a flow system required by the tested equipment; the flow template information at least comprises a tester type, a sending rate, a sending packet number, a sending mode and a transmission mode, wherein the tester type comprises a physical tester and a virtual tester, the flow system is configured according to different network data transmission levels, the flow template is core configuration of the tester, the flow can be divided into different layers in the template, the application range of an automatic tester flow generation method is improved, and a more flexible test mode is provided for testers.
The flow template is an abstract configuration class, and can have completely different performances for different types of testers so as to realize the purpose of being compatible with testers of different manufacturers and types. For the test cases, one flow template shows the same behavior under the condition of facing all different testers, so that the development efficiency of the test cases is improved, and the operation and maintenance difficulty of an automatic test framework is also reduced.
Configuring the tester according to different tester types in the flow template; for example, reference may be made to the OSI model; configuring link information of a receiving/transmitting packet direction, a frame size, a transmission mode, a transmission rate and head types of each layer in a basic attribute layer, such as a transmission rate, the number of transmitting packets, a transmission mode and the like; configuring the physical medium type interface rate at the physical layer; configuring source MAC, destination MAC, protocol type, CRC check and VLAN at the quantity link layer, such as destination MAC address, source MAC address, next layer type and the like; configuring IP header type and ARP header type in network layer, such as destination IP address, source IP address, TTL (Time To Live) and other fields; configuring UDP header type and TCP header type at a transmission layer; the HTTP application type, the FTP application type, the Mail application type and the Linux application type are configured at the application layer. Meanwhile, a specific type of a certain layer can be specified, for example, when a ARP (Address Resolution Protocol) message needs to be simulated, a type of a second layer (data link layer) can be specified as ARP; when the IPv6 message needs to be simulated, the type of the third layer (network layer) can be designated as IPv6; when the HTTP application message needs to be emulated, the application layer may be designated as HTTP.
The flow template supports 4 layers and above of flow simulation tests, and can realize the operations of HTTP application flow, FTP application flow, mail application flow and Linux terminals.
Specifically, HTTP application type: the path is the path which the HTTP Server needs to monitor, the data is the response data of the HTTP Server, the status is the status code of the response, the method is the action of the request, the url is the link of the request, and the filename is the file name which needs to be uploaded or downloaded; FTP application type: command is a command of FTP operation, a file name of filename operation, dir is a path of operation file; mail application type: user is user name, password is password, text is mail content, filename is file name as attachment, command is operation such as sending or receiving; linux application type: command is a command that needs to be executed on a terminal, stdin is a standard input, stdout is a standard output, and stderr is a standard output error.
S304, adding the flow template to a tester, generating test flow and carrying out flow test on the tested equipment;
the method is used for converting abstract flow template configuration classes into languages understood by all testers and converting all layers of data in the flow template configuration classes into actual fields. The flow template is an abstract configuration class, and can have completely different performances for different types of testers so as to realize the purpose of being compatible with testers of different manufacturers and types.
Specifically, the test case calls the add_traffic () method of TG, and calls different methods according to the TG type in the configuration file containing Link information, so as to create traffic on the interface. The source end MAC/IP address and the destination end MAC/IP address information of the access interfaces of the physical layer, the data Link layer and the network are obtained from Link information of a sending direction and Link information of a receiving direction, and repeated configuration of different test cases by a case writer is not needed. For a virtual tester, HTTP, FTP, mail, linux application flow simulation information requiring additional support can also be obtained from the flow template configuration.
And calling a start_traffic () method of the TG to send the traffic. For the application layer traffic of the virtual tester, a request of the application traffic is initiated, and after the application server responds to the request, the traffic transmission is considered to be finished.
In some embodiments, referring to fig. 5, when performing a test, the method includes the steps of:
test case call tg.add_traffic (); reading the type of the TG under the current networking from the topology file, and judging the type of the tester;
in the case of a physical tester, the generation of test flow comprises the following steps:
calling a corresponding physical tester API, and creating flow;
calling a physical tester API, and writing the link information of the packet sending direction into a source interface/MAC/IP of the flow;
calling a physical tester API, and writing the link information of the packet sending direction into a destination interface/MAC/IP of the flow;
calling a physical tester API, and writing the flow template configuration network data transmission level data into the flow;
calling tg.start_traffic (); the tester sends out traffic from the interface.
Aiming at the physical tester, the method calls the function creation flow provided by the manufacturer, and a writer is not required to write a specific test case aiming at the tester equipment of the manufacturer.
In some embodiments, referring to fig. 5, if the tester is a virtual tester for a data link layer and a network layer, the generation of test traffic includes the steps of:
calling an OTG component to create traffic;
invoking an sanppi function of the OTG to write the packet-sending direction link information into a source interface of the flow;
invoking an sanppi function of the OTG to write the packet-sending direction link information into a destination interface of the flow;
invoking an sanppi function of the OTG to write the traffic template configuration network data transmission hierarchy data into traffic;
calling tg.start_traffic (); the tester sends the flow.
In some of these embodiments, referring to fig. 5, if the tester is a virtual tester for the application layer, the generation of test traffic includes the steps of:
corresponding application services such as HTTP application service, FTP application service, mail application service and Linux application service are started according to the flow template configuration;
calling tg.start_traffic ();
sending an application flow request;
the server side requests correspondingly and receives a server side response; and the generation of the test flow is realized.
For the virtual tester, only configuration information required by different network data transmission layer protocols is required to be obtained from the flow template configuration, and a case writer is not required to write a specific test case for a certain layer of the virtual equipment.
The virtual tester can be deployed on any virtualization platform without depending on various physical wiring, and can also be installed on physical equipment, so that the virtual tester is replaced by the physical tester, and the testing cost is reduced.
In some embodiments, the network data transmission layer may be any layer of the seven OSI layers, the four TCP/IP layers and the five TCP/IP layers, and the traffic templates automatically configure the corresponding content required by the layer protocol according to different layers.
In some embodiments, the flow template performs a target tester conversion step, converts the flow template into a specific command group corresponding to the target tester, and converts each layer of data parameters in the flow template into actual transmission control fields.
In some embodiments, referring to fig. 2, the method uses a corresponding monitoring tool, for example, a packet capturing device to obtain a message forwarded by a tested device, and determines whether the content in the checked message meets the expectations, so as to implement a flow test, and the specific process includes the following steps:
t10, starting a grabbing bag; the starting of the packet capturing is to call a message capturing function of the tester, and after the tested equipment processes the message, the tested equipment also needs to judge whether the message forwarded after the processing is correct or not;
t20, stopping sending the flow; the flow stopping sending can adopt two modes of preset flow message number or manual flow stopping sending; the preset flow message number mode is to stop sending the designated message number, and the flow sending state of the tester needs to be monitored for the sending mode, and the next judging operation is carried out only after the flow sending is finished; the manual suspension flow mode is to continue to send flow, and this mode of sending requires manual stopping. The port status of the tester, such as the rate of the sending or receiving direction, the number of messages in the sending or receiving direction, etc., can also be obtained in this operation. The same data is returned in the step, and the performances of all types of testers are consistent for the test cases;
t30, stopping grabbing the bag; and stopping obtaining the message, and simultaneously directly returning to the class after the message is processed, wherein the class is captured by the port of the tester. The method is greatly convenient for writers of test cases, and processing of the packet grabbing files and processing of file I/O streams by different testers are not needed to be considered.
In another aspect, the present invention also provides an electronic device, including: a memory for storing a computer program; and the processor is used for realizing any one of the automatic tester flow generation methods when executing the program stored in the memory.
In another aspect, the present invention further provides a computer readable storage medium, in which a computer program is stored, and when the computer program is executed by a processor, the method for generating flow of any one of the automated testers is implemented.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.

Claims (10)

1. The flow test method is characterized by comprising the following steps of:
s02, acquiring a tester interface;
s04, initializing a tester and link information of tested equipment;
s06, initializing a flow template; the flow template can be called by a test case and is used for configuring a basic attribute layer, a physical layer, a data link layer, a network layer, a transmission layer and an application layer of the flow;
and S08, adding the flow template to the tester, generating test flow and carrying out flow test on the tested equipment.
2. The flow test method according to claim 1, wherein in step S08, a test case is executed, the current tester type is determined, and the flow template configures the tester according to different tester types to generate a test flow; the tester types include a physical tester, a virtual tester for a data link layer and a network layer, and a virtual tester for an application layer.
3. The flow rate testing method according to claim 2, wherein when the tester is a physical tester, the generation of the test flow rate includes the steps of:
calling an API of a tester, and creating flow;
calling an API of a tester, and writing link information in a packet sending direction into a source interface/MAC/IP of the flow;
calling an API of a tester, and writing link information in a packet sending direction into a destination interface/MAC/IP of the flow;
calling an API of the tester, and writing transport layer data configured by the flow template into the flow;
test traffic is generated and sent.
4. The traffic testing method according to claim 2, wherein when the tester is a virtual tester for a data link layer, a network layer, the generation of the test traffic comprises the steps of:
invoking an OTG component to create traffic;
invoking a snappi function of the OTG component, and writing link information in a packet sending direction into a source interface/MAC/IP of the flow;
invoking a snappi function of the OTG component, and writing link information in a packet sending direction into a destination interface/MAC/IP of the flow;
calling a snappi function of the OTG component, and writing transport layer data configured by a flow template into the flow;
test traffic is generated and sent.
5. The flow test method according to claim 2, wherein when the tester is a virtual tester for an application layer, the generation of the test flow includes the steps of:
corresponding application service is started according to the flow template configuration;
test traffic is generated and sent.
6. The flow testing method according to claim 1, wherein in step S04, the tester link information includes a tester port rate, a tester port name, a tester port MAC address, and a tester port IP address;
the tested device link information comprises tested device port rate, tested device port name, tested device port MAC address and tested device port IP address.
7. The traffic testing method according to claim 1, wherein in step S06, the configuration operation of the traffic template on the basic attribute layer, the physical layer, the data link layer, the network layer, the transport layer, and the application layer of the traffic includes:
configuring link information in a receiving/transmitting packet direction, frame size, transmission mode, transmission rate and head types of each layer in a basic attribute layer;
configuring the physical medium type interface rate at the physical layer;
configuring source MAC, destination MAC, protocol type, CRC check and VLAN at a quantity link layer;
configuring the IP header type and the ARP header type at a network layer;
configuring UDP header type and TCP header type at a transmission layer;
the HTTP application type, the FTP application type, the Mail application type and the Linux application type are configured at the application layer.
8. The flow test method according to claim 1, wherein in step S08, when generating the test flow to perform the flow test on the device under test, further comprising the steps of starting packet capturing, stopping sending the flow, and stopping packet capturing.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the flow test method according to any one of claims 1 to 8 when executing a program stored on a memory.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which, when executed by a processor, implements the flow test method according to any of claims 1-8.
CN202311565739.2A 2023-11-22 2023-11-22 Flow testing method, equipment and storage medium Pending CN117527650A (en)

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Application Number Priority Date Filing Date Title
CN202311565739.2A CN117527650A (en) 2023-11-22 2023-11-22 Flow testing method, equipment and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311565739.2A CN117527650A (en) 2023-11-22 2023-11-22 Flow testing method, equipment and storage medium

Publications (1)

Publication Number Publication Date
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