CN105099829B - A kind of information resources service availability automatic monitoring method based on http protocol - Google Patents
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Abstract
A kind of information resources service availability automatic monitoring method based on http protocol, includes three phases：Service access behavioural characteristic automation collection；Service access behavioural characteristic stores；Service access Behavior modeling is with differentiating.The present invention can be used for monitoring by http protocol offer the search of electronic resources and the network service running status of download service, using the monitoring for being used to carry out bought bibliographic data base service including institution of higher learning and scientific research institutions.The present invention in the case of information resources service device control authority is obtained, completes with monitoring to implement for the monitoring information collection of the information resources service availability based on http protocol without manual analysis information resources service web page code.The collection of the live network address for all information of retrieval Form lists and download file can be automatically performed completely without any manual analysis is carried out to retrieval page code using the user of monitoring function, there is high automatization level.
Description
Technical field
The present invention relates to a kind of information resources service availability automatic monitoring method based on http protocol, for monitoring
The network service running status of the search of electronic resources and download service is provided by http protocol.
Background technology
Current Web technology has goed deep into the daily life of the mankind, has existed and is largely externally provided by http protocol
The search of electronic resources and the network service of download service, Typical Representative therein are exactly all kinds of bibliographic data base resource platforms, such as
ACM, SCI-E, Springer Link etc..For the demand of teaching research, many institution of higher learning and scientific research institution can all buy greatly
The bibliographic data base of amount.However, influenceed by network environment unstability and network service availability, domestic universities and colleges and scientific research machine
Abnormal page access, search service dysfunction or resource downloading service work(occurs in access of the structure for bibliographic data base often
Can be abnormal situations such as, directly compromise the consumption rights and interests of bibliographic data base buyer.Artificial periodic monitoring method takes time and effort, and imitates
Rate is low.
In the prior art, can by the control to institute's monitoring server for the monitoring scheme of information resources service availability
It is divided into two major classes：
First kind scheme is to network in the case of controllable and operation information resources service device and adjunct network device
The availability monitoring that service is carried out, its implementation is typically making for the equipment such as the CPU, internal memory and hard disk of monitoring network server
With the running status of the network based services facility such as situation and interchanger.Such mode is only applicable to monitor self-built electronics money
Source services, library's OPAC systems of such as universities and colleges and scientific research institutions itself.
Second class scheme is from information resources service buyer's angle, can not obtain the control of information resources service device
The monitoring of information resources service availability is carried out in the case of authority.Prior art is obtained by manual analysis web page source code mode
The control title of corresponding search condition is taken, then submits retrieval by way of customizing and corresponding to control value in webpage Form lists
Request, finally by judge information resources service device can correctly return to response message by anticipation mode realize monitor.It is such a
Mode, which is disadvantageous in that, to be needed to obtain the title of corresponding control by manually reading web page source code, and current each
The design framework and control naming rule of information resources service website are often not consistent, and this requires to use such a monitoring scheme
User should have higher professional standards, automaticity is low, high using difficulty, and ease for use is poor, it is difficult to popularization and application.
The content of the invention
The technical problem to be solved in the present invention is how from information resources service buyer's angle, without people's work point
Information resources service web page code is analysed, in the case of information resources service device control authority is obtained, is automated with one kind
The mode that degree is high, is easily used complete monitoring information collection for the information resources service availability based on http protocol with
Monitoring is implemented, and the information resources service type monitored includes the search of electronic resources service and the electronics provided by http protocol
Resource downloading service.
In order to solve the above problems, the present invention is divided into three phases in network protocol analysis method as core：Service access
Behavioural characteristic automation collection；Service access behavioural characteristic stores；Service access Behavior modeling is with differentiating and (monitoring)；Specifically such as
Under：
1) service access behavioural characteristic automation collection, this is the core content of the present invention.
As shown in Fig. 2 service access behavioural characteristic acquisition scheme of the present invention uses network equipment bottom layer driving
Routine interface obtains user's caused all-network data message during by browser access information resources service.
Based on the analysis to captured network message, the automatic feature for obtaining service access behavior is simply provided according to user's in this programme
Information, i.e., the network message information generated is needed in monitoring process.
The operating process that user carries out service access behavioural characteristic collection using this programme is as shown in Figure 3.
Under user is set in selected information resources service website URL, selected searching character string and selected website first
Link corresponding to published article part shows that character is (aobvious as corresponding to bibliographic data base retrieval result is used to downloading the hyperlink of full text
Show word, and such as " Full Text "), then start service access behavioural characteristic capture program.It is special starting service access behavior
After levying capture program, the subsequent network operations of user are recorded by behavioural characteristic capture program.
Now, user need to only retrieve according to the mode of operation of routine and download e-sourcing：Pass through any a net
Page browsing device opens selected information resources service website, inputs selected searching character string and confirms to retrieve, is returned in website
A certain resource is selected in the retrieval page returned, the hyperlink display text that resource is downloaded by clicking on performs down operation.
After user completes retrieval and the operation for downloading e-sourcing, pass through the life of service access behavioural characteristic capture program
Order stops the collection to user network operation.Now service access behavioural characteristic capture program can be generated corresponding to user just now
The service access behavioural characteristic operated.
Using the solution of the present invention, the operation that user is carried out in whole monitoring information gatherer process is that any have
The operation that the personnel of most basic online experience can complete, anyone work point is carried out to retrieval page code completely without user
Analysis can be automatically performed the collection for all information of retrieval Form lists and the live network address for downloading file, ensure that this
Scheme has high automatization level, reduces and is monitored to the full extent on the premise of ensureing that scheme has versatility
The technical difficulty of information gathering, the scheme of ensure that have best ease for use.
This programme continuously captures network message until obtaining individual features information during analysis (such as retrieval row
It is characterized or downloads URL addresses of file etc.) stop afterwards.In the process, only to caused in user service access process, number
Analyzed and processed according to length more than 0 Transmission Control Protocol message, and using " source IP address " in message for the machine address message as
Request message, using the message that " purpose IP address " in message is the machine address as response message.Need what is analyzed for each
Packet, Different Strategies are respectively adopted and are handled：
(1) request message is handled
Analyzed by request message, the characteristic information of retrieval behavior can be obtained.As shown in figure 4, this programme first determines whether
Whether request message is Ajax request messages, in the case where the load of current TCP data bag is not Ajax request messages, foundation
The searching character string and the difference of HTTP request method that user selectes, divide three major types situation to message using corresponding analysis side
Case：
A) load of TCP data bag is HTTP message, and HTTP message using GET request method and comprising and retrieval
Character string,.
B) load of TCP data bag is HTTP message, and HTTP message is using POST request method, and POST request
It is overall that a TCP data bag is used only, while include searching character string.
C) load of TCP data bag is HTTP message, and HTTP message is using POST request method, and POST request
Overall to use multiple TCP data bags, it is necessary to after to multiple data package-restructurings, differentiation includes searching character string.
Do not handled for the packet for finding to be not belonging to the class situation of the above three in analyzing deterministic process in packet content,
Then follow-up packet is continued with, until terminating all packet crawls after obtaining all required behavior characteristic informations
With analyzing work.
(2) response message is handled
Analyzed by response message, the characteristic information that e-sourcing downloads behavior can be obtained, core is to find user to exist
Service access behavioural characteristic acquisition phase clicks on the download URL addresses of the e-sourcing of download.It should be noted that once examine
Rope and downloading process can produce multiple different http response message, and the content of a response message is there is a possibility that with one
Or in multiple TCP response messages.
The present invention needs to collect all TCP data bags according to the response corresponding relation of itself and HTTP request.Need
It is noted that if multiple TCP data bags equally correspond to same HTTP request, chunked is not used in http response message
, it is necessary to which these TCP data bags are needed to be analyzed again after forming complete http response message by restructuring during coded system.
Analyzed as shown in figure 5, this programme is divided into four kinds of situations for a TCP response message：
A) for http response message, it is first determined whether being that a TCP data bag is used only.If so, then according to message
Whether pass through the judged result of GZIP compressions, carry out GZIP decompressions when necessary, finally give the load of HTTP message
Content, and the file download URL addresses included in HTTP loads are obtained (if the address is in HTTP message using regular expression
If being implicitly present in load).All packet crawl and analysis are terminated after all required behavior characteristic informations are obtained
Work.
B) if http response message has used multiple TCP data bags, and has used chunked coded systems, then true
Recognize http response and be not used in the case of GZIP compressions content in the current TCP data bag of Direct Analysis, and obtain it is all needed for
Behavior characteristic information after terminate all packet crawls and analysis work.
C) if http response message has used multiple TCP data bags, and has used chunked coded systems, while again
HTTP message load contents are compressed using GZIP modes, then needed all collect that http response message included
The load contents obtained in HTTP message are decompressed by GZIP after TCP data bag.Then, regular expression is recycled to obtain
The file download URL addresses included in HTTP loads (if being implicitly present in if the address in HTTP message load).Obtaining
All packet crawls and analysis work are terminated after obtaining all required behavior characteristic informations.
If d) http response message has used multiple TCP data bags, and chunked coded systems are not used, then converging
After all TCP data bags that collection http response message is included, complete http response report is obtained by TCP data package-restructuring
Text.Then, the judged result of GZIP compressions whether is passed through according to message, carries out GZIP decompressions when necessary, it is final to obtain
To the load contents of HTTP message, and using regular expression obtain HTTP load in include file download URL addresses (if
If the address is implicitly present in HTTP message load).Terminated after all required behavior characteristic informations are obtained all
Packet captures and analysis work.
2) service access behavioural characteristic stores
For the search of electronic resources service, the core of service access behavioural characteristic is caused bag in retrieving
The header information of HTTP message containing searching character string and POST form informations that may be present.For e-sourcing download service
For, the core of service access behavioural characteristic is the download address of e-sourcing.
Therefore, it is necessary to the letter of storage in using database or the similar data storage method with structures
Breath includes：(included among these for all key-value pair informations in the header for the HTTP request message for retrieving access behavior
Searching character string relevant information under GET request mode)；For the message load for the HTTP request message for retrieving access behavior
In correspond to POST lists all key-value pair informations (if present)；E-sourcing download address.
3) service access Behavior modeling is with differentiating and (monitoring).As shown in fig. 6, it is divided into the monitoring of 5 types：
A) monitoring server Network Interface Unit availability monitors, and monitors whether to be due to the network of monitoring server in itself
The failure that interface equipment has causes information resources service not access.
B) network gateway availability monitoring where monitoring server, monitor whether that network where being due to monitoring server is asked
Topic causes information resources service not access.
C) information resources service device selectes the availability of webpage.Setting URL corresponding webpage is obtained by connecting, according to electricity
The responsive state acquisition of information of child resource server selectes the usability status of webpage.
D) information resources service device retrieval service availability.HTTP request is constructed using the service behavior characteristic information of storage
Message is sent to information resources service device, and it is normal that the content by analyzing response message differentiates whether retrieval service request returns
Response message, so as to judge retrieval service usability status.
E) information resources service device file download service availability.Setting URL respective file is obtained by connecting, according to
The responsive state acquisition of information of information resources service device selectes the usability status of webpage.
The present invention is from information resources service buyer's angle, without manual analysis information resources service webpage generation
Code, in the case of information resources service device control authority is obtained, by a kind of automaticity it is high, be easily used in a manner of
Complete with monitoring to implement for the monitoring information collection of the information resources service availability based on http protocol.Use monitoring function
User can be automatically performed for retrieval Form lists institute completely without carrying out any manual analysis to retrieval page code
There is information and download the collection of the live network address of file, there is high automatization level, ensureing that it is general that scheme has
The technical difficulty for being monitored information gathering is reduced to the full extent on the premise of property, and the scheme of ensure that has best easy-to-use
Property and good popularizing application prospect.
To the automation collection of configuration information needed for the monitoring of information resources service device service availability.The letter of institute's automatic data collection
Breath can be used for monitoring the search of electronic resources service and e-sourcing download service.Automatic monitoring information resources service device monitoring net
Stand availability, the availability of retrieval service, the availability of download service of the page.To prevent from reporting by mistake, automatic monitoring monitoring service
The state of device local network context, including the state of monitoring server own network interface equipment and the gateway of residing network can use
Character state.Regarded as output controlling can provide the analytic function for availability monitoring journal.
Brief description of the drawings
Fig. 1 is overview flow chart of the present invention.
Fig. 2 is service access behavioural characteristic gatherer process general principles block diagram.
Fig. 3 is service access behavioural characteristic acquisition operations flow chart.
Fig. 4 is request message processing routine flow chart.
Fig. 5 is response message processing routine flow chart.
Fig. 6 is that information resources service monitors flow chart.
Embodiment
Describe the embodiment of the present invention in detail below in conjunction with technical scheme and accompanying drawing.
1) service access behavioural characteristic automation collection
A) network equipment bsp driver interface
Using Winpcap free netses bsp driver and corresponding development library file acquisition by specifying the network equipment
Network message packet.In Java language environment, Jpcap class libraries can be used to obtain the network message packet of bottom, can
To obtain source IP address, purpose IP address, serial number that TCP data bag included, confirm number, urgent data flag, confirm number
Effective marker, transmission enforcement functionalities mark, that mark, serial number acknowledgement indicator, transmission end mark, window are reseted in request connection is big
The information such as small, emergency data pointer and data.
B) parsing of network message content
The TCP data bag load of transmission http data content can use Java standard class String to be converted to word
Symbol string, the regular expression class Pattern of Java standards can be used to be parsed afterwards, String classes also can be used directly
Character string function is analyzed.For the HTTP data compressed using GZIP methods, Java tool-class can be used
Java.util.zip.GZIPInputStream is converted to character string after being decompressed, then carry out subsequent treatment again.
C) for the judgement of HTTP message attribute.
If HTTP message head includes " Transfer-Encoding:Chunked ", then show that HTTP message uses
Chunked is encoded.If HTTP message head includes " Content-Encoding:Gzip ", then show in HTTP message load
Appearance is compressed using gzip.If HTTP message head includes " X-Requested-With ", it is believed that current HTTP please
Ask and asked for Ajax.
D) response message recombinates.
For the response message being made up of multiple TCP data bags, if the message is not encoded using chunked, need
By all TCP data bag interim storages, and (believed after confirming to obtain all packets of message according to HTTP data packet headers
Content-length and the data length in the packet obtained contrast understand whether obtain all packets in breath), according to
According to the sequence number (sequence) in each packet by all TCP data packet sequencings, then successively by each TCP data bag
Content is spliced in same byte arrays, and byte arrays then are converted into character string (in message by being needed during GZIP compressions
Want necessary decompression operation).The character analysis operation for http protocol is finally carried out to obtained character string.
E) behavioural characteristic availability is captured with given HTTP request header information and the checking of POST form informations.
The org.apache.http.impl.client.HttpClients classes in Apache class libraries can be used to construct simultaneously
Network request is sent, for the org.apache.http.client.methods.CloseableHttpResponse of its return
Class object, the content of response can be obtained, whether (such as Content-Type values are comprising critical information by content
Text/xml) or responsive state code (such as 200) or responsive state information can determine whether crawl behavioural characteristic (such as " OK " or " ok ")
Availability.
2) service access behavioural characteristic stores
All key-value pair informations of form data can be by using Java standard characters in header and message load
String class String character string takes substring function, string segmentation function, character to search combination of function and obtain.Also may be used in storage
Whole header information and form data are directly stored with overall character string forms, key-value pair information extraction work is placed
Completed in the initialization procedure of monitoring implementation phase.
All behavior characteristic informations and information-setting by user can be stored in JSON files or database, also can be used
The transmission that JSON files carry out all behavior characteristic informations and information-setting by user (for example sets monitoring in monitoring information collection terminal
Confidence breath is uploaded in the scene of monitoring server).
3) service access Behavior modeling is with differentiating
A) monitoring server Network Interface Unit availability monitoring method
Java.net.InetAddress.isReachable (int timeout) is called to access the machine address
" 127.0.0.1 ", by checking whether time-out judges monitoring server Network Interface Unit availability for response.
B) network gateway availability monitoring method where monitoring server
By primary dns server used in program ping monitoring servers, check the response time, whether time-out judged
Network gateway availability where monitoring server.
C) information resources service device selectes the availability monitoring method of webpage
With the use of org.apache.http.client.methods.HttpGet classes and
The object formation of org.apache.http.impl.client.CloseableHttpClient classes please to selecting the GET of webpage
Ask, responded by network in returned org.apache.http.client.methods.CloseableHttpResponse
Information searching response message in whether comprising key responsive state code (such as 200) or responsive state information (such as " OK " or
" ok "), the availability for judging to select webpage with this.
D) information resources service device retrieval service availability monitoring method
According to the monitoring information previously gathered, differentiation is monitored and asked used in information resources service device retrieval service
Mode (GET request or POST request), then according to the monitoring information previously collected, it is used cooperatively
HttpGet classes, HttpPost classes in org.apache.http.client.methods bags and
The object of org.apache.http.impl.client.CloseableHttpClient classes, corresponding HTTP request is generated, led to
The letter crossed in the returned org.apache.http.client.methods.CloseableHttpResponse of network response
Whether breath is searched includes key responsive state code (such as 200) or responsive state information (such as " OK " or " ok ") in response message,
The availability of retrieval service is judged with this.
E) information resources service device file download service availability monitoring method
According to the file download address previously gathered, it is used cooperatively
Org.apache.http.client.methods.HttpGet classes and
org.apache.http.impl.client.
The object formation of CloseableHttpClient classes is returned to the GET request to select files by network response
Org.apache.http.client.methods.CloseableHttpResponse in information searching response message in
Whether comprising key responsive state code (such as 200) or responsive state information (such as " OK " or " ok "), download service is judged with this
Availability.
The monitoring system based on multipad can be developed using this programme, can also develop the monitoring based on B/S patterns
Server system and corresponding mobile client.For those skilled in the art, may be used also on the basis of the above description
To make other various forms of changes or variation.
Claims (1)
1. a kind of method of information resources service availability of automatic monitoring based on http protocol, includes three phases：Service
Access behavioural characteristic automation collection；Service access behavioural characteristic stores；Service access Behavior modeling is with differentiating；It is characterized in that
Following steps,
(1) first stage：Service access behavioural characteristic automation collection；
User is obtained during by browser access information resources service using network equipment bsp driver interface
Caused all-network message；Based on the analysis to captured network message, taken according to automatic obtain that be simply provided of user
The characteristic information of business access behavior, i.e., need the network message information generated in monitoring process；By analyzing user to electronics
The request message that Resource Server is sent, automatically analyze in the monitoring information needed during retrieval service monitoring；
When automatically analyzing request message, first determine whether request message is Ajax request messages, in current TCP data bag
In the case that load is not Ajax request messages, the searching character string and the difference of HTTP request method selected according to user, point
Three major types situation uses corresponding analytical plan to message：
A) load of TCP data bag is HTTP message, and HTTP message using GET request method and includes searching character
String；
B) load of TCP data bag is HTTP message, and HTTP message is using POST request method, and POST request is overall
Using only a TCP data bag, while include searching character string；
C) load of TCP data bag is HTTP message, and HTTP message is using POST request method, and POST request is overall
Using multiple TCP data bags, it is necessary to after to multiple data package-restructurings, differentiation includes searching character string；
Do not handled for the packet for finding to be not belonging to the class situation of the above three in analyzing deterministic process in packet content, then
Follow-up packet is continued with, until terminating all packet crawls after obtaining all required behavior characteristic informations and dividing
Analyse work；
Analyzed by response message, obtain the characteristic information that e-sourcing downloads behavior, core is servicing to be automatically found user
Access the download URL addresses that behavioural characteristic acquisition phase clicks on the e-sourcing of download；During response message is analyzed, it is
Obtain and download file address, be divided into four kinds of situations for a TCP response message and analyze：
A) for http response message, it is first determined whether being that a TCP data bag is used only；Used if meeting in good time
In the case that GZIP compresses, file download address is obtained by regular expression；Obtaining all required behavior characteristic informations
All packet crawls and analysis work are terminated afterwards；
If b) http response message has used multiple TCP data bags, and has used chunked coded systems, then confirming
Content in the current TCP data bag of Direct Analysis in the case of the unused GZIP compressions of http response, and it is all required obtaining
All packet crawls and analysis work are terminated after behavior characteristic information；
C) if http response message has used multiple TCP data bags, and has used chunked coded systems, while uses again
GZIP modes are compressed to HTTP message load contents, then need in all TCP for collecting http response message and being included
The load contents obtained in HTTP message are decompressed by GZIP after packet；Then, regular expression is recycled to obtain HTTP
The file download URL addresses included in load；All packets are terminated after all required behavior characteristic informations are obtained to grab
Take and analysis work；
If d) http response message has used multiple TCP data bags, and chunked coded systems are not used, then collecting
After all TCP data bags that http response message is included, complete http response message is obtained by TCP data package-restructuring；
Then, the judged result of GZIP compressions whether is passed through according to message, GZIP decompressions is carried out when necessary, finally gives
The load contents of HTTP message, and the file download URL addresses included in HTTP loads are obtained using regular expression；Obtaining
All packet crawls and analysis work are terminated after all required behavior characteristic informations；
(2) service access behavioural characteristic stores
For the search of electronic resources service, the core of service access behavioural characteristic is comprising inspection caused by retrieving
The header information of the HTTP message of rope character string and POST form informations that may be present；For e-sourcing download service
Speech, the core of service access behavioural characteristic is the download address of e-sourcing；
, it is necessary to which the packet of storage contains in using database or the similar data storage method with structures：Pin
To all key-value pair informations in the header for the HTTP request message for retrieving access behavior；For retrieval access behavior
Correspond to all key-value pair informations of POST lists in the message load of HTTP request message；
(3) service access Behavior modeling is divided into the monitoring of 5 types with differentiating：
A) monitoring server Network Interface Unit availability monitors, and monitors whether to be due to the network interface of monitoring server in itself
Failure be present and cause information resources service not access in equipment；
B) network gateway availability monitoring where monitoring server, monitor whether that network problem where being due to monitoring server is made
It can not be accessed into information resources service；
C) information resources service device selectes the availability of webpage；Setting URL corresponding webpage is obtained by connecting, is provided according to electronics
The responsive state acquisition of information of source server selectes the usability status of webpage；
D) information resources service device retrieval service availability；HTTP request message is constructed using the service behavior characteristic information of storage
Send to information resources service device, the content by analyzing response message differentiates whether retrieval service request returns normal sound
Information is answered, so as to judge retrieval service usability status；
E) information resources service device file download service availability；Setting URL respective file is obtained by connecting, according to electronics
The responsive state acquisition of information of Resource Server selectes the usability status of webpage.
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| CN108259482B (en) * | 2018-01-04 | 2019-05-28 | 平安科技（深圳）有限公司 | Network Abnormal data detection method, device, computer equipment and storage medium |
| CN108595586B (en) * | 2018-04-19 | 2021-12-24 | 杭州迪普科技股份有限公司 | Method and device for determining search keywords |
| CN113726808A (en) * | 2021-09-06 | 2021-11-30 | 杭州安恒信息安全技术有限公司 | Website monitoring method, device, equipment and storage medium |
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