CN103634137A - Simulated system of network transmission environment - Google Patents
Simulated system of network transmission environment Download PDFInfo
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- CN103634137A CN103634137A CN201210308142.5A CN201210308142A CN103634137A CN 103634137 A CN103634137 A CN 103634137A CN 201210308142 A CN201210308142 A CN 201210308142A CN 103634137 A CN103634137 A CN 103634137A
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Abstract
Provided in the invention is a simulated system of a network transmission environment. The system consists of an interface unit, a setting unit, an actual transmission unit and a simulation transmission unit. To be specific, the interface unit is used for invoking the actual transmission unit or the simulation transmission unit according to the setting of the setting unit; the setting unit is used for setting for using the actual transmission unit or the simulation transmission unit and setting a limited bandwidth and a network abnormity parameter; the actual transmission unit is used for carrying out actual network transmission; and the simulation transmission unit is used for carrying out limited bandwidth simulation and network error simulation according to the limited bandwidth and the network abnormity parameter. According to the simulated system, execution situations of application programs at various network bandwidths on various network abnormity conditions can be simulated, thereby evaluating logicality and obtaining the performance parameter of the system. Moreover, the network application program testing can be simplified; the testing period can be reduced; and the development speed of the network application program is improved.
Description
Technical field
The present invention relates to network service field tests, be specifically related to a kind of analogue system of Internet Transmission environment.
Background technology
If the network terminal need to move under bandwidth restricted, when carrying out the assessment of the aspect such as stability, system performance, generally need to build real network environment, allow the network terminal run under real network environment.This kind of method need to be built complex network environment, spends high.System performance under test different situations, need to change even topological structure of network settings, and environmental structure complexity and applicability are poor.When whether test macro Network Abnormal processing logic is complete, need to manufacture physical network mistake, be difficult to especially carry out.
Summary of the invention
The object of the invention is to, a kind of analogue system of Internet Transmission environment is provided, can be by arranging easily, the system performance of test network application program under Bandwidth-Constrained environment, and it is abnormal to simulate easily diverse network, with the exception handling logic of test network application program.
For reaching above-mentioned purpose, the embodiment of the present invention provides a kind of analogue system of Internet Transmission environment, and described system comprises: interface unit, setting unit, true transmission unit and analogue transmission unit;
Described interface unit, for according to the setting of described setting unit, calls described true transmission unit or described analogue transmission unit;
Described setting unit, for true transmission unit or described analogue transmission unit described in setup and use, and arranges bandwidth restricted and Network Abnormal parameter;
Described true transmission unit, for carrying out live network transmission;
Described analogue transmission unit, for according to described bandwidth restricted and Network Abnormal parameter, carries out bandwidth restricted simulation and network error simulation.
The beneficial effect of technical scheme of the present invention is, by the enforcement of this analogue system, can simulate the various implementation status lower than application program under authentic testing environment network bandwidth, diverse network abnormal conditions, with the strict logic of evaluate application, obtain the performance parameter of system etc.Can also simulate and occur diverse network abnormal conditions, whether complete etc. with the exception handling logic of test macro.By the enforcement of this analogue system, the test of simplified network application program greatly, reduces test period, improves the development rate of web application.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, by the accompanying drawing of required use in embodiment or description of the Prior Art being done to one, introduce simply below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the tested web application Organization Chart of the embodiment of the present invention;
Fig. 2 is the analogue system structural representation of the Internet Transmission environment of the embodiment of the present invention;
Fig. 3 is the concrete function block diagram of the analogue transmission unit of the embodiment of the present invention.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
A network-termination device, due to residing network environment Bandwidth-Constrained, is rendered as network data transmission limited ability to the network software system moving in terminal.And owing to being difficult to build the bandwidth restricted network environment that can reflect true application scenarios in laboratory, and allow system in bandwidth restricted situation, test comparatively difficulty and not comprehensive.In view of this, the object of the invention is to, a kind of analogue system of Internet Transmission environment is provided, can be by arranging easily, the system performance of test network application program under Bandwidth-Constrained environment, and it is abnormal to simulate diverse network, to test the exception handling logic of upper layer network business application.
The enforcement of the analogue system by this Internet Transmission environment, can test one and approach truth, under simulation diverse network bandwidth, diverse network abnormal conditions, the implementation status of application program, with the strict logic of evaluate application, obtains the performance parameter of system etc.And for physical network, there is no any requirement, only need be under laboratory condition, by the configuration of configuration file, can carry out carrying out under nominated bandwidth environment simulation test.Whether in addition, also can carry out some configurations, there are diverse network abnormal conditions in simulation, complete etc. with the exception handling logic of test macro.By the enforcement of this analogue system, the test of simplified network application program greatly, reduces test period, improves the development rate of upper layer network business application.
The analogue system of the Internet Transmission environment of the embodiment of the present invention comprises the Interface for socket API(Application Programming, API) one deck encapsulation, application programs presents limited interface, and carry out abstract package by C++ base class, utilize base class pointer can point to the characteristic of speech sounds of derived class, realize real network Communication processing logic and analog network Communication processing logic can be carried out indifference replacement, when facilitating simulation test, can not introduce again and because of simulation test logic, need to increase or delete any service logic.
Wherein, in the situation such as simulation test logic refers to the analogue system of application bandwidth restricted, simulates the upper layer network business application that possesses true application function logic,, Network Abnormal limited at the network bandwidth, carry out the test of program function.Service logic refers to the business function logic of upper layer network business application own, utilizes the analogue system of the Internet Transmission environment of the embodiment of the present invention to carry out the tested object logics of simulation test.
Fig. 1 is the tested web application Organization Chart of the embodiment of the present invention, and the application program realizing based on this Organization Chart, just can utilize analogue system of the present invention to test.As shown in Figure 1, on operating system, under upper layer network business application, the network operation API that system is provided carries out one deck encapsulation, realize a web socket encapsulation function, utilize this functional module, can better realize cross operating system on the one hand, on the other hand, can be by the setting unit in this functional module, carry out network behavior simulation and arrange, by analogue transmission unit, replace TCP/UDP transmission unit (as shown in Figure 2), realize flexible configuration and the simulation of diverse network situation.
The analogue system of the Internet Transmission environment of the embodiment of the present invention, on the program architecture basis shown in Fig. 1, in web socket encapsulation function, introduce setting unit and analogue transmission unit, support arranges flexibly by setting unit, allow analogue transmission unit substitute TCP/UDP transmission unit (as shown in Figure 2) and carry out network I/O simulation, using and realize as a kind of means of testing in upper layer network business application systems development process, reach raising development rate, guarantee the effect of program quality.
Fig. 2 is the structural representation of analogue system of the bandwidth restricted of the embodiment of the present invention, as shown in Figure 2, the analogue system 100(web socket encapsulation function of this Internet Transmission environment), comprise following functional unit: interface unit 110, simulation test setting unit (hereinafter to be referred as setting unit) 120, true transmission unit (TCP/UDP transmission unit) 130 and analogue transmission unit 140.
Web socket encapsulation function is by interface unit 110, to application development, provide unified interface, and by setting unit 120, the analogue system that can configure this Internet Transmission environment is to use TCP/UDP transmission unit 130, or analogue transmission unit 140, when setup and use analogue transmission unit 140, analog bandwidth, multiple random network abnormal conditions etc. can also be set flexibly.Can realize like this system of a normal exploitation, at test phase, by setting unit 120, grid IO is set and uses analogue transmission unit 140, simulation arranges various bandwidth restricted, multiple random network abnormal conditions, performance (comprising stability etc.) under, diverse network abnormal conditions limited at the network bandwidth with test macro, simplify test environment and build, increase Test coverage face, to reach the effect that improves the tested stability of a system.
Wherein, TCP/UDP transmission unit 130 and analogue transmission unit 140 are that by certainly concrete which unit that uses of setting unit 120, TCP/UDP transmission unit 130 and analogue transmission unit 140 come into force while being difference.Interface unit 110 calls analogue transmission unit 140, realizes analog network I/O function.Setting unit 120 is not directly called analogue transmission unit 140, the parameter settings such as whether setting unit 120 only completes and simulate, analog bandwidth, Network Abnormal parameter.Parameter after arranging can have influence on the Action logic of analogue transmission unit 140.Network Abnormal parameter for example can comprise: 1, Network Abnormal analog form, and analog form can be embodied wrong or closed socket and manufacture mistake etc. by return value; 2, Network Abnormal produces probability or condition, and the random probability of happening of Network Abnormal is set, or is arranged on Network Abnormal occurs when certain specific program logical condition meets.
The analogue system of this Internet Transmission environment is as the intermediate layer between system API and upper layer application, to upper layer application system development be interface unit 110, the return value by interface unit 110 embodies the result that upper layer application is called.And the concrete actuating logic of interface unit 110 is TCP/UDP transmission unit 130 or analogue transmission unit 140, be to be determined by setting unit 120.TCP/UDP transmission unit 130 and analogue transmission unit 140 all can call system API, realize real network I/O function etc.Particularly, TCP/UDP transmission unit 130 utilizes system API, realizes network I/O function; Analogue transmission unit 140 is due to the parameters of setting unit 120, normal network I/O function is intervened, such as restricting data transmitting-receiving speed reaches bandwidth restricted simulation, random error analog network mistake etc., but be also to carry out calling of system API, when bandwidth does not reach confined condition or do not produce simulation mistake, carry out real network I/O function.
In one embodiment, user can pass through configuration file, allows setting unit 120 by the configuration take-effective of configuration file, realizes function is set.The content of configuration file can comprise: bandwidth restricted value, random anomaly algorithm selection etc.If do not configure or do not exist configuration file, system is by normal logic operation, i.e. non-simulation test logic.
In one embodiment, diverse network, extremely for upper layer application, shows as the failure of system API Calls, and by encapsulation, is to be rendered as package interface malloc failure malloc to upper layer application.So can pass through random algorithm, in each package interface certain probability return to failure, whether rigorous for the processing of unsuccessfully returning to test upper layer application logic.
Fig. 3 is the concrete function block diagram of the analogue transmission unit of the embodiment of the present invention.As shown in Figure 3:
In one embodiment, this analogue transmission unit 140 comprises: TCP Bandwidth-Constrained analog module 142, and for the higher limit that makes data traffic volume in the unit interval or quantities received be no more than bandwidth restricted.
In another embodiment, this analogue transmission unit 140 comprises: UDP Bandwidth-Constrained analog module 144, while surpassing the higher limit of bandwidth restricted for the data traffic volume within the unit interval or quantities received, carries out packet loss processing.
In yet another embodiment, this analogue transmission unit 140 comprises: network error analog module 146, and for according to Network Abnormal random algorithm, stochastic simulation network error, feed back to upper level applications, or the I/O handle of closing use is to be rendered as true mistake.
In yet another embodiment, this analogue transmission unit 140 can comprise the above-mentioned combination of two or three modules arbitrarily.
The concrete function of above-mentioned TCP Bandwidth-Constrained analog module 142, UDP Bandwidth-Constrained analog module 144, network error analog module 146 is described below:
Module in analogue transmission unit 140, specifically can be for reading the setting of setting unit 120, and flow restriction is carried out in simulation, consistent upper layer application performance when reaching with Bandwidth-Constrained.
When realizing TCP Bandwidth-Constrained analog module 142, for TCP communication, the main manifestations of bandwidth restricted is that data transmission capabilities is lower, and data receiver ability declines.Wherein, data transmission capabilities is by take for 1 second as measurement period, and statistics traffic volume makes the data traffic volume in each second all be less than or equal to the bandwidth higher limit of setting, to reach the data transmission capabilities of simulation bandwidth restricted.Similarly, data receiver also take for 1 second as measurement period, by revising the reception buffer zone length of importing into when reception is called on upper strata, realized the bandwidth higher limit that the data volume of obtaining from protocol stack socket buffering in each second is no more than setting.
When realizing UDP Bandwidth-Constrained analog module 144, for UDP communication, show as the network bandwidth and be subject to occur packet loss in limited time.When data send, if the data volume to be sent that in 1 second, upper strata issues is greater than the bandwidth upper limit of setting, packet loss and do not carry out Internet Transmission initiatively.For data receiver, be that the data volume that receives in 1 second is greater than in bandwidth in limited time, carry out packet loss processing.Packet loss processing refers to loses the packet sending below, as within 1 second, allowed to send the data volume of 1MB, if the actual 2MB that sent in upper strata loses rear 1MB data.
Network error analog module 146, supports to arrange by configuration file, and by interface return value, stochastic simulation network error, presents to upper layer network business application.The main random algorithm that adopts, in the process of communication, produces mistake with certain probability, by interface return value, feeds back to upper level applications.Also support random generation when wrong, the I/O handle of use is closed in analogue transmission unit, and allows follow-up I/O handle operation failure, is rendered as a kind of Network Abnormal.
To upper layer software (applications) system, interface returns correctly not abnormal, if the mistake of returning just represents that existence is abnormal, needs abnormality processing.Whether, by layering, concrete mistake is indifferent on upper strata, be only concerned about abnormal.
In one embodiment, can use random () API to realize random value, then random value is carried out to the complementation in certain limit, if remainder equals 0, produce mistake.So can realize probability adjustment by adjusting complementation scope.
In embodiments of the present invention, for the simulation of network error, be to realize by two kinds of modes: 1, the interface of interface unit returns to failure, for upper layer application, has thought Network Abnormal; 2, socket is closed in analogue transmission unit, and close socket, can bring real Network Abnormal, and the last or failure of returning by interface unit feeds back to upper layer application.
In the embodiment of the present invention: the system of (1) layering, unification encapsulates system API, abstraction interface unit, thus make framework clear, can reduce maintenance cost etc.; (2), by setting unit, carry out easily true transmission logic and analogue transmission logic and switch, and do not form any adverse effect for true transmission logic; (3) utilize inside, analogue transmission unit to carry out the simulation of bandwidth restricted simulation and network error, can conveniently test, improve development rate, test abnormality processing flow process and reach the effect of strengthening test.The exploitation of the above-mentioned analogue system by the embodiment of the present invention, developer can carry out function, the performance performance test of network program in bandwidth restricted situation easily, improve program development speed, and the abnormal handling process of test network, reach the effect of strengthening test.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, or the combination of the two is implemented.
Above embodiment only, in order to the technical scheme of the embodiment of the present invention to be described, is not intended to limit; Although the embodiment of the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the embodiment of the present invention.
Claims (7)
1. an analogue system for Internet Transmission environment, is characterized in that, described system comprises: interface unit, setting unit, true transmission unit and analogue transmission unit;
Described interface unit, for according to the setting of described setting unit, calls described true transmission unit or described analogue transmission unit;
Described setting unit, for true transmission unit or described analogue transmission unit described in setup and use, and arranges bandwidth restricted and Network Abnormal parameter;
Described true transmission unit, for carrying out live network transmission;
Described analogue transmission unit, for according to described bandwidth restricted and Network Abnormal parameter, carries out bandwidth restricted simulation and network error simulation.
2. system according to claim 1, is characterized in that, described interface unit comprises TCP interface and UDP interface.
3. system according to claim 1, is characterized in that, described analogue transmission unit comprises:
TCP Bandwidth-Constrained analog module, for the higher limit that makes data traffic volume in the unit interval or quantities received be no more than bandwidth restricted.
4. system according to claim 1, is characterized in that, described analogue transmission unit comprises:
UDP Bandwidth-Constrained analog module, while surpassing the higher limit of bandwidth restricted for the data traffic volume within the unit interval or quantities received, carries out packet loss processing.
5. system according to claim 1, is characterized in that, described analogue transmission unit comprises:
Network error analog module, for according to Network Abnormal random algorithm, stochastic simulation network error, feeds back to upper layer network business application, or the I/O handle of closing use is to be rendered as true mistake.
6. system according to claim 1, is characterized in that, described true transmission unit comprises TCP/UDP transmission unit.
7. system according to claim 1, is characterized in that, the analogue system of described bandwidth restricted is formed on operating system, under upper layer network business application, be web socket encapsulation function.
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| CN109271310A (en) * | 2017-07-18 | 2019-01-25 | 北京京东尚科信息技术有限公司 | The exploitation test method and device of mobile applications network function |
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