CN111478825A - Extensible network traffic generation and analysis method and system - Google Patents
Extensible network traffic generation and analysis method and system Download PDFInfo
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Abstract
The invention discloses an extensible network traffic generation and analysis method and system. The method comprises the steps of receiving and analyzing flow generation information input by a user; converting the flow configuration information in the analyzed flow description script into a set format; generating flow according to the flow control information and the flow configuration information, storing the flow into a cache, and generating a flow descriptor; grouping the flow in the cache according to the flow descriptor, calculating a scheduling parameter of each flow in the flow group, and then sending a message in the flow to the tested equipment by adopting a grouping polling method according to the grouping, the scheduling parameters and the clock; and analyzing and counting the messages sent by the tested equipment and the messages sent to the tested equipment to obtain message statistical information. The system comprises a display control module, a flow configuration generation module, an information collection module, a method analysis module, a flow generation module, a flow scheduling module, a message transceiving queue module, a clock module and a flow receiving analysis and statistics module.
Description
Technical Field
The invention relates to the field of computer networks, in particular to an extensible network flow generation and analysis method and system.
Background
The network protocol test is to execute a group of test cases with definite purposes by using a test method, further observe the output behavior realized by the tested network, analyze the test result and judge whether the function or performance meets the regulations of the protocol or the user. The network protocol test is a black box test that is concerned only with the external behavior of the implementation under test and not with its internal operation.
Network protocol testing is generally divided into three categories: conformance testing, interoperability testing, and performance testing. The performance test is carried out on the basis that the first two tests pass, and the general test sequence is to carry out the consistency test, then carry out the interoperability test and finally carry out the performance test.
Conformance testing is the basis of network protocol testing, and its purpose is to test whether the network implementation is consistent with the provisions in the network protocol. Consistency is the most fundamental requirement for network implementation. Interoperability tests are used to test the situation of interconnection and interworking between network interconnected devices, which derive from the real-world requirements of the network. Through the performance test of the tested object, the behavior, the burst flow processing capability, the performance index, the performance limit and the influence of the architecture on the performance of the tested object under different loads can be known.
The main purpose of the performance test is to test and evaluate the performance of the network implementation. The network implementation is the object of network performance test, including network devices and network systems. The network equipment mainly comprises a hub, a switch, a router and the like; the network system is a network aggregate that is connected by network devices and can provide a certain network service.
The object concerned by the performance test is the performance index of the network, such as delay and loss rate, and is an important means for accurately evaluating the protocol implementation performance under different network loads.
Network traffic generation is the most critical technology in performance testing, and existing network traffic generation is mainly generated by using a special network tester. The dedicated network tester realizes flow generation in a hardware mode, but the dedicated network tester is designed for a specific network protocol, so that the dedicated network tester has defects in expandability and cannot meet the test requirements of the autonomous controllable network protocol.
Disclosure of Invention
In view of the above-mentioned deficiencies in the prior art, the present invention aims to provide an extensible network traffic generation and analysis method and system to meet the test requirements of different network protocols.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
a scalable network traffic generation and analysis method is provided, which includes:
s1, receiving and analyzing flow generation information input by a user, wherein the flow generation information comprises a flow description script and flow control information;
s2, converting the flow configuration information in the analyzed flow description script into a set format;
s3, generating flow according to the flow control information and the flow configuration information with the set format, storing the flow into a cache, and generating a flow descriptor;
s4, grouping the flow in the cache according to the flow descriptor, and calculating the scheduling parameter of each flow in the flow group; then, sending messages in flow to the tested equipment by adopting a packet polling method according to the packets, the scheduling parameters and the clock;
s5, analyzing and counting the messages sent by the tested device and the messages sent to the tested device to obtain message statistical information, wherein the message statistical information comprises the number of messages to be sent and received, the number of bytes to be sent and received, time delay, packet loss rate and real-time rate.
On the other hand, the present solution also provides an extensible network traffic generation and analysis system, which includes:
the display control module is used for receiving and analyzing the flow generation information input by the user, then sending the flow generation information to the flow control module, and receiving and displaying the message statistical information; the flow generation information comprises a flow description script and flow control information;
the flow control module is used for sending the analyzed flow description script to the flow configuration generation module, packaging the flow control information and the flow configuration information with a set format and sending the packaged flow control information and the flow configuration information to the method analyzer;
the flow configuration generation module is used for converting the flow configuration information in the analyzed flow description script into a set format and then sending the set format to the flow control module;
the information collection module is used for receiving the message statistical information sent by the receiving analysis module, and sending the message statistical information to the display control module after the message statistical information is arranged in parallel;
the method analysis module is used for analyzing the flow control information and the flow configuration information and then sending the flow control information and the flow configuration information to the flow generation module;
the flow generation module is used for generating flow according to the flow control information and the flow configuration information, storing the flow into a cache, generating a flow descriptor, storing the flow descriptor into a queue of the flow scheduling module, and then informing the flow scheduling module of scheduling;
the flow scheduling module is used for grouping the flow in the cache according to the flow descriptor, calculating the scheduling parameter of each flow in the flow group, and sending the message in the flow through the message receiving and sending queue module by adopting a grouping polling method according to the grouping, the scheduling parameter and the clock, wherein the sending objects are the tested equipment and the flow receiving, analyzing and counting module;
the message receiving and sending queue module is used for receiving the message returned by the tested equipment and sending the message to the flow receiving, analyzing and counting module;
the clock module is used for generating a clock required by the flow scheduling module;
the flow receiving, analyzing and counting module is used for analyzing and counting the messages sent by the message receiving, transmitting and queuing to obtain message statistical information, and sending the message statistical information to the information collecting module through the method analyzing module; the message statistical information comprises the number of messages to be transmitted and received, the number of bytes to be transmitted and received, time delay, packet loss rate and real-time rate.
Furthermore, in order to separate the user input side from the tested device, the display control module, the flow configuration generation module and the information collection module are integrated to form a first unit and are integrated on the client; the method analysis module, the flow generation module, the flow scheduling module, the clock module, the message receiving and sending queue module, the flow receiving analysis and statistics module and the message capture module form a second unit and are integrated on the server; the information collection module and the flow control module are in communication connection with the method analysis module through a first interface on the client side and a second interface on the service side.
Furthermore, the number of the first units is more than 2, and the first units are respectively integrated on different clients, so that the simultaneous testing of different tested devices by multiple users is supported.
Furthermore, in order to facilitate the user to retrieve the lookup message, the display control module is further configured to receive and analyze the filtering rule input by the user and then send the filtering rule to the flow control module;
the flow control module is also used for sending the analyzed filtering rule to the message capturing module through the method analyzing module;
the expandable network flow generating and analyzing system also comprises a message capturing module which is used for capturing the message from the tested equipment in the flow receiving, analyzing and counting module according to the filtering rule and sending the captured message to the information collecting module through the method analyzing module.
Further, in order to make the message field dynamically change, the method for generating the flow according to the flow control information and the flow configuration information includes:
forming a basic message according to the flow control information and the flow configuration information;
and generating the message in the flow based on the information of the basic message and the data in the domain.
The invention has the beneficial effects that:
the method and the system provided by the invention can automatically generate the corresponding flow according to the flow generation information input by the user, thereby providing the required flow for the tested equipment, the generated flow can meet the test requirements of different network protocols, and the method and the system have good expandability and provide support for the performance test of the autonomous network equipment and protocols. The generated flow returns after passing through the tested equipment, so that the number of transmitted and received messages, the number of bytes transmitted and received, the time delay, the packet loss rate and the real-time rate are calculated based on the returned flow and the flow sent to the tested equipment.
Drawings
FIG. 1 is a schematic block diagram illustrating an application of the scalable traffic generation and analysis system in an exemplary embodiment;
FIG. 2 is a schematic block diagram of a scalable traffic generation and analysis system traffic generation process in the embodiment of FIG. 1;
FIG. 3 is a schematic block diagram of a traffic analysis process of the scalable traffic generation and analysis system in the embodiment of FIG. 1;
FIG. 4 is a schematic block diagram illustrating a message capture process of the scalable traffic generation and analysis system in the embodiment of FIG. 1;
FIG. 5 is a diagram of intra-domain data Area 1 and intra-domain data Area2 according to an exemplary embodiment;
fig. 6 is a flow chart of a packet polling method.
Detailed Description
The following detailed description of the present invention will be provided in conjunction with the accompanying drawings to facilitate the understanding of the present invention by those skilled in the art. It should be understood that the embodiments described below are only some embodiments of the invention, and not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step, without departing from the spirit and scope of the present invention as defined and defined by the appended claims, fall within the scope of protection of the present invention.
It should be noted that: if it is described that one constituent module is "communicatively connected" to another constituent module, a first constituent module may be communicatively connected directly to a second constituent module, or a third constituent module may be "communicatively connected" between the first constituent module and the second constituent module such that the first constituent module is communicatively connected to the second constituent module. On the contrary, when one constituent module is "directly communicatively connected" to another constituent module, it is understood that a third constituent module does not exist between the first constituent module and the second constituent element module.
The term "user" used in various embodiments of the present disclosure may indicate a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).
The expandable network flow generation and analysis method comprises the following steps:
s1, receiving and analyzing flow generation information input by a user, wherein the flow generation information comprises a flow description script and flow control information;
s2, converting the flow configuration information in the analyzed flow description script into a set format;
s3, generating flow according to the flow control information and the flow configuration information with the set format, storing the flow into a cache, and generating a flow descriptor;
s4, grouping the flow in the cache according to the flow descriptor, and calculating the scheduling parameter of each flow in the flow group; then, sending messages in flow to the tested equipment by adopting a packet polling method according to the packets, the scheduling parameters and the clock;
s5, analyzing and counting the messages sent by the tested device and the messages sent to the tested device to obtain message statistical information, wherein the message statistical information comprises the number of messages to be sent and received, the number of bytes to be sent and received, time delay, packet loss rate and real-time rate.
As shown in fig. 1 to 3, a scalable network traffic generation and analysis system includes:
the display control module is used for receiving and analyzing the flow generation information input by the user, then sending the flow generation information to the flow control module, and receiving and displaying the message statistical information; the flow generation information comprises a flow description script and flow control information;
the flow control module is used for sending the analyzed flow description script to the flow configuration generation module, packaging the flow control information and the flow configuration information with a set format and sending the packaged flow control information and the flow configuration information to the method analyzer;
the flow configuration generation module is used for converting the flow configuration information in the analyzed flow description script into a set format and then sending the set format to the flow control module, wherein the set format can be a JSON format;
the information collection module is used for receiving the message statistical information sent by the receiving analysis module, and sending the message statistical information to the display control module after the message statistical information is arranged in parallel;
the method analysis module is used for analyzing the flow control information and the flow configuration information and then sending the flow control information and the flow configuration information to the flow generation module;
the flow generation module is used for generating flow according to the flow control information and the flow configuration information, storing the flow into a cache, generating a flow descriptor, storing the flow descriptor into a queue of the flow scheduling module, and then informing the flow scheduling module of scheduling;
the flow scheduling module is used for grouping the flow in the cache according to the flow descriptor, calculating the scheduling parameter of each flow in the flow group, and sending the message in the flow through the message receiving and sending queue module by adopting a grouping polling method according to the grouping, the scheduling parameter and the clock, wherein the sending objects are the tested equipment and the flow receiving, analyzing and counting module;
the message receiving and sending queue module is used for receiving the message returned by the tested equipment and sending the message to the flow receiving, analyzing and counting module;
the clock module is used for generating a clock required by the flow scheduling module;
the flow receiving, analyzing and counting module is used for analyzing and counting the messages sent by the message receiving, transmitting and queuing to obtain message statistical information, and sending the message statistical information to the information collecting module through the method analyzing module; the message statistical information comprises the number of messages to be transmitted and received, the number of bytes to be transmitted and received, time delay, packet loss rate and real-time rate.
In implementation, as shown in fig. 1 to 3, in the present solution, a display control module, a flow configuration generation module, and an information collection module are integrated to form a first unit and integrated on a client; the method analysis module, the flow generation module, the flow scheduling module, the clock module, the message receiving and sending queue module, the flow receiving analysis and statistics module and the message capture module form a second unit and are integrated on the server; the information collection module and the flow control module are in communication connection with the method analysis module through a first interface on the client side and a second interface on the service side.
As shown in fig. 1, the device under test is in communication connection with the message transceiving queue module through the input/output interface, the input/output interface is ethernet interface cards, the number of the ethernet interface cards is multiple, so that multiple test interfaces of the same device under test are simultaneously connected, the first interface and the second interface are RPC interfaces, and correspondingly, the flow control module encapsulates the flow control information and the flow configuration information with the set format into an RPC message and then sends the RPC message to the method analysis module through the first interface and the second interface.
As shown in fig. 1, the number of the first units is more than 2, and the first units are respectively integrated on different clients. The number of the Ethernet interface cards is multiple, so that multiple users are supported to simultaneously test by using different user terminals, and different tested devices temporarily use different Ethernet interface cards.
As shown in fig. 4, in order to facilitate the user to retrieve the lookup packet, the extensible network traffic generation and analysis system further includes a packet capturing module, configured to capture, according to the filtering rule, a packet from the device under test in the traffic receiving, analyzing and counting module, and send the captured packet to the information collecting module via the method analyzing module. The display control module is also used for receiving and analyzing the filtering rule input by the user and then sending the filtering rule to the flow control module; the flow control module is also used for sending the analyzed filtering rule to the message capturing module through the method analysis module. Meanwhile, the format of the message stored in the information collection module is generally pcap, so that most users can call and look up the message.
The method for generating the flow according to the flow control information and the flow configuration information to enable the message field to dynamically change comprises the following steps:
(1) forming a basic message according to the flow control information and the flow configuration information:
template-based hierarchical stacking techniques allow a user to describe one or a series of messages as layers that are stacked one on top of the other, with a useful and reloadable default value for each layer's data field. The user can use the predefined method and template structure to construct the basic message, and can also construct the self-defined basic message through the self-defined protocol layer.
Common protocol messages of the internet, such as ETHER, IPv4, TCP, UDP and other messages, have pre-defined templates, and basic messages can be constructed in a simpler way. The following takes the construction of a UDP packet as an example, and exemplifies the construction of a basic packet.
The constructed UDP message comprises an Ethernet header (Ether), an IPv4 header (IP), a UDP header (UDP) and a payload part (PAY L OAD), the protocols are internally predefined, and a basic message can be constructed only by using a predefined template.
The above script defines the first layer packet ethernet header of the packet with a destination MAC address of "00:11: f7:09:13:24", no default values (MAC address of selected packet sending interface) are provided for the source MAC address, and 0x0800 for EthType (determined for IP by the next layer protocol). The second layer is an IP header, the source IP address is "16.0.0.1", the destination IP address is "5.5.5.5", the Protocol field is 0x06 (determined by the next layer Protocol being UDP), and the rest of the fields use default values, which is not described herein again. Layer three is a UDP header with source port number 1025, destination port number 12, and default values for the remaining fields. The payload portion is defined as "0 xAABB", indicating that all of the payload portion will be re-populated with "0 xAABB".
Next, a definition mode of a custom protocol header is introduced, where the protocol is a protocol of a network layer, and the following is a format of the protocol header:
the protocol header definition includes the name of the protocol, the definition of each field of the protocol header, the length of each field, default values,
the script definition for the protocol header is given below:
the name of the protocol is defined as 'TEST' in the script, and the default value, bit length and protocol number of the protocol of the upper layer of each field are defined. The len field uses the definition of 'Auto', which indicates that the field is automatically calculated in a way of adding the self length of a protocol header to the load length of the protocol; the proto field uses the EField definition, which means that the value is a range-defining value, defined herein as "IP _ PROTOS", which means "IP _ PROTOS" using the predefined IPv4 protocol. The protocol of the upper layer can be defined as Eether, and the type field of the protocol is 0x 1234.
For example, a UDP packet using the new protocol may be defined using the following:
the protocol has a first layer of Eether, a second layer of TEST, a third layer of UDP and a fourth layer of load part.
The basic message does not support the dynamic change of the message field, so that the message in the flow is generated by adopting the information based on the basic message and the data in the domain to realize the dynamic change of the message field so as to realize the dynamic change of the message field and meet different flow modes required by the test.
(2) Generating the message in the flow based on the information of the basic message and the intra-domain data to realize the dynamic change of the message field:
the information of the data in the domain comprises the offset of the data in the domain relative to the initial position of the message, the length of the data in the domain, the minimum value of the data in the domain, the maximum value of the data in the domain, a change module and an optional field, and the change mode comprises increment, decrement and random change.
That is, the information of the intra-domain data is represented as (the data content between any piece of offset (field offset) is called a piece of intra-domain data, and the intra-domain data is the user input content):
FieldVar＝(offset,size,min_value,max_value,mod,step_size)
offset is the offset of the data in the domain relative to the start of the message.
size: domain length.
min _ value is the minimum value of data within the domain.
max _ value is the maximum value of data in the domain.
mod change mode contains (inc, dec, random).
step _ size: an optional field, which may specify an increment or decrement stride when Mod is inc or dec, defaults to 1.
As shown in fig. 5, the information of the intra-domain data Area 1 is represented as: FieldVar ═ (10,2,0x4455,0xffff, inc); the information of the intra-domain data Area2 is represented as: FieldVar ═ (26,4,0xc0a8042b,0 xfffffffff, random).
In consideration of ease of use and readability, the above intra-domain data Area 1 and Area2 are changed to Area 1: FiledVar ═ ("ether. src", "00:11: 22:33:44: 55", "00:11: 22:33: ff: ff", inc); area 2: the FiledVar (ip. src "," 192.168.4.43 "," 255.255.255.255 ", random) then combines with the basic message to generate the message in the traffic.
Where, src is the field corresponding to offset 10 and size 2, 00:11:22:33:44:55 is the decimal point number represented by 0x4455, and 00:11:22:33: ff: ff is the decimal point number represented by 0 xffff. Src is offset26, size 4 corresponding field, 192.168.4.43 is dot decimal number represented by 0xc0a8042b, 255.255.255 is dot decimal number represented by 0 xfffffffff. That is, offset and size are represented by their corresponding fields, min _ value and max _ value are represented by their corresponding dotted decimal numbers, and mod and step _ size remain unchanged.
The flow chart of the packet polling method is shown in fig. 6.
Claims (6)
1. A scalable network traffic generation and analysis method, comprising:
s1, receiving and analyzing flow generation information input by a user, wherein the flow generation information comprises a flow description script and flow control information;
s2, converting the flow configuration information in the analyzed flow description script into a set format;
s3, generating flow according to the flow control information and the flow configuration information with the set format, storing the flow into a cache, and generating a flow descriptor;
s4, grouping the flow in the cache according to the flow descriptor, and calculating the scheduling parameter of each flow in the flow group; then, sending messages in flow to the tested equipment by adopting a packet polling method according to the packets, the scheduling parameters and the clock;
s5, analyzing and counting the messages sent by the tested device and the messages sent to the tested device to obtain message statistical information, wherein the message statistical information comprises the number of messages to be sent and received, the number of bytes to be sent and received, time delay, packet loss rate and real-time rate.
2. A scalable network traffic generation and analysis system, comprising:
the display control module is used for receiving and analyzing the flow generation information input by the user, then sending the flow generation information to the flow control module, and receiving and displaying the message statistical information; the flow generation information comprises a flow description script and flow control information;
the flow control module is used for sending the analyzed flow description script to the flow configuration generation module, packaging the flow control information and the flow configuration information with a set format and sending the packaged flow control information and the flow configuration information to the method analyzer;
the flow configuration generation module is used for converting the flow configuration information in the analyzed flow description script into a set format and then sending the set format to the flow control module;
the information collection module is used for receiving the message statistical information sent by the receiving analysis module, and sending the message statistical information to the display control module after the message statistical information is arranged in parallel;
the method analysis module is used for analyzing the flow control information and the flow configuration information and then sending the flow control information and the flow configuration information to the flow generation module;
the flow generation module is used for generating flow according to the flow control information and the flow configuration information, storing the flow into a cache, generating a flow descriptor, storing the flow descriptor into a queue of the flow scheduling module, and then informing the flow scheduling module of scheduling;
the flow scheduling module is used for grouping the flow in the cache according to the flow descriptor, calculating the scheduling parameter of each flow in the flow group, and sending the message in the flow through the message receiving and sending queue module by adopting a grouping polling method according to the grouping, the scheduling parameter and the clock, wherein the sending objects are the tested equipment and the flow receiving, analyzing and counting module;
the message receiving and sending queue module is used for receiving the message returned by the tested equipment and sending the message to the flow receiving, analyzing and counting module;
the clock module is used for generating a clock required by the flow scheduling module;
the flow receiving, analyzing and counting module is used for analyzing and counting the messages sent by the message receiving, transmitting and queuing to obtain message statistical information, and sending the message statistical information to the information collecting module through the method analyzing module; the message statistical information comprises the number of messages to be transmitted and received, the number of bytes to be transmitted and received, time delay, packet loss rate and real-time rate.
3. The scalable network traffic generation and analysis system of claim 1, wherein the display control module, the flow configuration generation module, and the information collection module are integrated into a first unit and integrated on the client; the method analysis module, the flow generation module, the flow scheduling module, the clock module, the message receiving and sending queue module, the flow receiving analysis and statistics module and the message capture module form a second unit and are integrated on the server; the information collection module and the flow control module are in communication connection with the method analysis module through a first interface on the client side and a second interface on the service side.
4. The scalable network traffic generation and analysis system of claim 3, wherein the first units are 2 or more, each integrated on a different client.
5. The scalable network traffic generation and analysis system of claim 1, wherein the display and control module is further configured to receive and parse a filter rule input by a user and send the filter rule to the flow control module;
the flow control module is also used for sending the analyzed filtering rule to the message capturing module through the method analyzing module;
and the message capturing module is used for capturing the message from the tested equipment in the flow receiving, analyzing and counting module according to the filtering rule, and sending the captured message to the information collecting module through the method analyzing module.
6. The scalable network traffic generation and analysis system of any of claims 1-5, wherein the method for generating traffic based on the flow control information and the flow configuration information comprises:
forming a basic message according to the flow control information and the flow configuration information;
and generating the message in the flow based on the information of the basic message and the data in the domain.
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