CN106453679A - Method and system for obtaining domain name IP address without blocking - Google Patents
Method and system for obtaining domain name IP address without blocking Download PDFInfo
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- CN106453679A CN106453679A CN201610876689.3A CN201610876689A CN106453679A CN 106453679 A CN106453679 A CN 106453679A CN 201610876689 A CN201610876689 A CN 201610876689A CN 106453679 A CN106453679 A CN 106453679A
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- address
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a method and system for obtaining a domain name IP address without blocking. The method comprises the steps of obtaining a domain name resolution request through a master process; establishing a sub-process by the master process; calling a gethostbyname () function by the sub-process to obtain an IP address corresponding to a domain name; and monitoring whether the sub-process obtains the IP address or not by the master process, if the sub-process obtains the IP address, continuing to operate, and if the sub-process does not obtain the IP address, stopping waiting after the master process waits for preset time. According to the method and the system, through adoption of the mode of the master process and the sub-process, the gethostbyname () function liable to block is placed in the sub-process, and a user can control the waiting time of the whole process by controlling the waiting time of the master process. When blocking occurs, the process is quitted without waiting for the 30-second response time of the gethostbyname () function.
Description
Technical field
The invention belongs to communication technical field, particularly relate to a kind of non-method and system blocking acquisition domain name/IP address.
Background technology
Resource address on current internet identifies with URL (URL), and URL is also referred to as webpage ground
Location, which is the resource address of standard on internet, and URL generally embodies in the way of domain name.
Domain name refers to a certain the computer on internet being made up of the name of a string separation or calculates unit
Title, for identifying the electronic bearing (sometimes referred to as geographical position) of computer when data are transmitted.
User is when the resource accessing on network, and the form generally with URL for the resource address is expressed, and the domain name in URL is then
Illustrate the address at server place, but, server generally uses IP address on network and represents its address.Obtain domain name
Corresponding IP address can be described as domain name mapping.
When processing the URL network request comprising domain name, domain name mapping generally to be carried out is to obtain this domain name pair
The IP address answered.For example during inquiry www.sina.com.cn corresponding IP address, after server obtains inquiry request, call storehouse
Corresponding for domain name IP address is returned to client by function gethostbyname ().
If but call built-in function the gethostbyname () short time can not obtain server response if, it will not be at once
Exit, but wait until that time-out exits always, time-consuming about 30 seconds of this process.It causes the page to wait as long for, it is impossible to response
The operation of user.And gethostbyname () function is linux built-in function, and versatility is stronger, it has not been convenient to repair it
Change.
For solving obstructing problem during domain name mapping in prior art, disclose multiple solution.For example, Publication No.
The Chinese patent " a kind of domain name analytic method and device " of CN103581349A, it sets up two or more in domain name mapping module
For the thread of domain name mapping, when there being analysis request, then select from multiple threads one available.When all of thread all
When unavailable, then newly-built one or entrance waiting queue.Although this measure reduces the blocking rate in resolving, reduce net
The seemingly-dead probability of page, but owing to multiple thread set up by needs, increase server burden undoubtedly.
And for example, the Chinese patent " a kind of domain name analytic method and device " of Publication No. CN104683501A, it passes through
Domain name buffer table is set, when there being domain name mapping to ask, whether there is corresponding parsing in first checking home domain name buffer table and believe
Breath, if having, directly returns parsing information, if without just to server request corresponding parsing information, during to save domain name mapping
Between.But, this kind of scheme increases the burden of local client, need to additionally arrange domain name buffer table.
Content of the invention
The technical problem to be solved is the above-mentioned deficiency for prior art, proposes one and uses boss's process
Mode obtain domain name addresses, be placed on the gethostbyname () function that reality obtains domain name addresses in subprocess, and lead
The non-obstruction of closedown and then shortening page stand-by period that process can control subprocess obtains the method for domain name/IP address.
It is a further object of the present invention to provide a kind of non-system blocking acquisition domain name/IP address.
The technical scheme that the present invention solves the employing of its technical problem is as follows：
A kind of non-method blocking acquisition domain name/IP address, it comprises the following specific steps that：
Obtain domain name mapping request by host process；
Host process creates subprocess；
Subprocess calls gethostbyname () function to obtain the corresponding IP address of domain name；
Whether host process monitoring subprocess gets IP address, if getting, then continuing to run with, if not getting, then leading
Process stops waiting after waiting Preset Time.
Further, described host process is by calling fork () function creation subprocess.
Further, described subprocess gets in Hou JiangIP address, IP address write default file, and host process detection should
Whether default file has content and then judges whether subprocess gets IP address.
Further, described subprocess creates IP address file after getting IP address, and host process monitors whether there is IP
Address file and then judge whether subprocess gets IP address.
Further, after described host process stops waiting, subprocess time-out exits.
Further, after described host process stops waiting, subprocess is deleted by host process.
The present invention also provides a kind of non-system blocking acquisition domain name/IP address, and the system of the present invention specifically includes as placed an order
Unit：
Host process creating unit, for creating the host process accessing domain name；
Subprocess creating unit, creates subprocess by host process；
IP address acquisition unit, calls gethostbyname () function to obtain the corresponding IP address of domain name by subprocess.
Further, also including monitoring unit, whether host process gets IP address by monitoring unit monitoring subprocess,
If getting, then continuing to run with, if not getting, then host process stops waiting after waiting Preset Time.
Further, described subprocess creating unit is fork () function, and host process is entered by fork () function creation
Journey.
Further, also including IP address write file, described subprocess obtains write literary composition in write IP address behind IP address
Part, whether described monitoring unit monitoring IP address write file exists content.
Further, also include that subprocess deletes unit, created by this host process for deleting after host process stops waiting
The subprocess built.
Technical solution of the present invention uses the mode of boss's process to obtain domain name addresses, and reality is obtained domain name addresses
Gethostbyname () function is placed in subprocess, and host process can control the closedown of subprocess and then the shortening page waits
Time.
Brief description
Fig. 1 is the system flow chart of one embodiment of the present invention.
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment 1
The present invention relates to a kind of non-method blocking acquisition domain name/IP address, wherein, non-obstruction is relative to prior art
In obstruction for.Concrete, " obstruction " refers to that a certain process just can carry out next process after having to pass through wait certain time.
And corresponding, " non-obstruction " refers to that a certain process can be walked around waiting time and directly carry out next process.
It is with more popular linguistic interpretation：If driveing to a certain place, wherein a certain section of road traffic congestion, the reality of " obstruction "
Existing mode is that traffic congestion situation terminates just to continue to end next destination by the time, alleviates " blocking " and reaches the method for " non-blocking " then
It is to try every possible means to walk around traffic congestion section or reduce traffic congestion probability.
Specific in technical solution of the present invention, if wanting to obtain domain name corresponding IP address, can realize with various ways, but
It is that the application is only for the mode utilizing gethostbyname () function to realize.Owing to gethostbyname () function is
The built-in function of liunx system, can be directly invoked by program, and therefore implementation is relatively simple, range of application is wider.But
Owing to gethostbyname () function is choke function, i.e. if if it can not obtain server response, it has to wait for relatively
The long time just can automatically exit from.This time is usually about 30 seconds, and waiting time is to cause for the page operation of router
Life.But directly changing gethostname () function can cause other systems calling this function in whole system mistake occur
By mistake.
To this end, the present embodiment solves the problems referred to above by following concrete scheme.
Refer to Fig. 1, in the present embodiment, the non-method blocking acquisition domain name/IP address specifically includes following steps：
Host process obtains domain name mapping request；
" domain name mapping " will domain name point to cyberspace IP address.For example, it is assumed that domain name is
Www.sina.com.cn, its corresponding IP address is 17.25.36.1.Domain name mapping request refers to that user inputs in a browser
After domain name, name server finds the process of this domain name corresponding IP address.After only obtaining IP address, ability and objective network
Communicate.
" process " refers to the once operation activity with regard to certain data acquisition system for the program with certain standalone feature, and it is behaviour
Make the elementary cell of system.
Host process creates subprocess；
" subprocess " is for " host process "." subprocess " refers to independently execute a certain function, but, it is subject to
" host process " controls, the class process that can be terminated by " host process ".After " subprocess " quilt " host process " terminates, " subprocess " is gathered around
The whole resources having, or return to " host process " or return to system.
Host process creates multiple methods that subprocess can use its default running.For example, at linux system, i.e.
Fork () function, vfork () function and three kinds of creation methods of clone () function, the son that every kind of creation method produces can be used
Pass between address, resource, execution function and host process for the process is fastened all not quite identical.
Wherein, data segment and code segment, the vfork () function of fork () function copy host process shares number with host process
According to section, clone () function can be by the resource of user's selecting inheritance host process.
In the present embodiment, host process passes through fork () function creation subprocess.
Subprocess by fork () function creation is substantially identical process with host process, that is, host process with
Subprocess can do identical thing, but, subprocess is by host process control.
Owing to the task of host process is domain name mapping, therefore, it passes through the task of the subprocess of fork () function creation also
It is domain name mapping.Now, subprocess calls gethostbyname () function to obtain domain name corresponding IP address.
That is, in the above-described example, after user inputs the domain name of www.sina.com.cn, subprocess passes through
Gethostbyname () function obtains this IP address of 17.25.36.1.
Gethostbyname () function is i.e. defined through domain name or host name acquisition IP address in Linux system
Function.Due to its direct this function of corresponding domain name analysis, it is not necessary to additionally program, therefore, be widely used.
The incoming value of gethostbyname () function is domain name or host name, spreads out of the structure that value is a hostentd,
Specific as follows：
Wherein, hostent->What h_name represented is the canonical name of main frame.For example, the canonical name of www.google.com
It is www.l.google.com in fact
hostent->The another name .www.google.com of what h_aliases represented is main frame is exactly google himself
Another name.Sometimes, some main frames may have several another names, these, it is in fact provided to be easy to user and remember and be the net of oneself
Stand the name taking more.
hostent->What h_addrtype represented is the type of main frame ip address, is ipv4 (AF_INET) on earth, or
pv6(AF_INET6).
hostent->What h_length represented is the length of main frame ip address.
hostent->What h_addr_lisst represented is the ip address of main frame.
After subprocess calls gethostbyname () function, whether host process monitoring subprocess obtains IP address, if obtaining
IP address, then returned this IP address to client by host process；If exceeding a period of time not obtain, then host process stops.
That is, the no matter whether finally and successfully IP address that gets of subprocess, system is run and will not therefore be stopped over, is entirely
System will not be parked in there and wait gethostbyname () function respond or do not respond and exit.Namely " the non-resistance of the application indication
Plug obtains domain name/IP address ".
Embodiment 2
The present embodiment is with the difference of embodiment 1, after the subprocess of the present embodiment obtains IP address, by IP address
In write default file.
Host process is by detecting whether this default file exists content and then judge whether subprocess successfully obtains IP address.
This default file is generally deposited in as in system temporary folder, for example, in/TMP/IPaddr file, it is possible to
To deposit in alternative document folder.
When host process is through Preset Time (typically smaller than 30 seconds), be still not detected by/TMP/IPaddr file in have content
After, it exits.
After host process exits, subprocess is in blocked state.Subprocess can after blocking time (30 seconds) terminate voluntarily
Exit, it is also possible to actively deleted by host process.
This kind of executive mode of the present embodiment, will not cause the wasting of resources.
Other contents of the present embodiment refer to embodiment 1.
Embodiment 3
The present embodiment is with the difference of embodiment 2：
In example 2, host process needs to detect file content, this kind of detection also relatively consumption system resource.
And in the present embodiment, after subprocess gets IP address, directly create IP address file.Host process only needs detection
Whether there is file in default file folder and i.e. can determine whether whether subprocess successfully obtains IP address.
Similarly, if host process is through Preset Time (typically smaller than 30 seconds), be still not detected by IP address file, then son enters
Journey time-out exits or is deleted by host process.
Above three embodiment can be applicable in disparate networks connection type, and for example, WIFI connects, Ethernet connects, 3G
Data cube computation, 4G data cube computation etc. are all applicable.
Above three embodiment applies also for the net that all kinds of existence needs IP address requesting and needs and external communication
In network equipment, for example：Router, intelligent television, smart mobile phone etc..
Below as a example by router resolves Sina website IP address by Ethernet connection request, describe the base of the application in detail
This workflow：
1st, user is in operation pages, for example, and IE browser input Sina website's domain name (www.sina.com.cn), and click on
Enter key；
2nd, system response user operation, sets up host process to prepare to access www.sina.com.cn；
3rd, host process sets up subprocess by fork () function；
4th, subprocess calls gethostbyname () and obtains www.sina.com.cn corresponding ip address；
5th, host process is circulated wait, and monitors whether subprocess successfully obtains corresponding ip address；
If 6 subprocess successfully obtain the ip address 17.25.36.1 of www.sina.com.cn, then by ip address
17.25.36.1 in the ipaddr file under writing system tmp file；Host process monitors ipaddr document memory in content
After then terminate wait, continue to run with；
If 7 subprocess cause not due to the domain name of network problem or the other side's server problem or user's input error
Can obtain ip address in Preset Time, then host process waits and stops when presetting waiting.System can proceed with next step and lives
Dynamic；
8th, after host process stops waiting, subprocess automatically exits within a period of time or is deleted by host process.
Present invention also offers a kind of non-system blocking acquisition domain name/IP address, it specifically includes such as lower unit：
Host process creating unit, the master being prepared to access certain domain name by system creation one for responding user operation enters
Journey；
Establishment process is that system is by text filed (text region), data area (data region) and storehouse
(stack region) distributes to the process of a certain address space.Wherein, stationery region storage performs code, and data area stores
Variable and the term of execution internal memory that uses, the instruction called and local variable in storehouse storage active procedure.
Subprocess creating unit, different by system creation from host process, subprocess is created by host process.
In a preferred embodiment, subprocess is passed through fork () function creation by host process.By fork () function creation
Subprocess at above-mentioned text filed (text region), data area (data region) and storehouse (stack region)
Upper identical with host process, it performs same task with host process.
IP address acquisition unit, subprocess calling system already present gethostbyname () function is to obtain domain name pair
Answer IP address.
This step is produced by automated system operation, it is not necessary to additionally arrange.
Said system also includes monitoring unit, and during subprocess obtains IP address, host process passes through monitoring unit
Whether monitoring subprocess gets IP address smoothly, if obtaining smoothly, then host process continues to run with, if not obtaining, then and host process
By the time stop after Preset Time waiting, then system continues executing with next task.
The information of monitoring unit monitoring can be a certain file content, and whether a certain file exists, or a certain information etc..
As more preferably scheme, present invention additionally comprises IP address write file, subprocess after getting IP address by IP
Address is written in this IP address write file.
Monitoring unit is by monitoring whether this IP address write file has content to judge whether subprocess successfully obtains IP
Address.
The acquisition IP address if subprocess fails, present invention additionally comprises subprocess and has deleted unit.Wait in host process
After exceeding Preset Time, subprocess is deleted unit and is deleted subprocess, thus saves the resource of system.
Hinge structure of the present invention has the following technical effect that：
1st, the present invention uses the mode of boss's process, and the gethostbyname () function easily blocking is put into subprocess
In, user can be by controlling the stand-by period of host process and then the stand-by period controlling whole process.When clogging occurs,
Without 30 second response time of gethostbyname () function by the time to exiting process again.
2nd, pass through fork () function creation subprocess, system resource can be saved.
3rd, global design is easy to use, with strong points, all and applies in all kinds of domain name mapping occasions, and without changing former system
System framework；
4th, in technical solution of the present invention, the host process stand-by period can independently set.
Specific embodiment described herein is only explanation for example to present invention spirit.Technology neck belonging to the present invention
Described specific embodiment can be made various modification or supplements or use similar mode to replace by the technical staff in territory
Generation, but without departing from the spirit of the present invention or surmount scope defined in appended claims.
Claims (10)
1. the non-method blocking acquisition domain name/IP address, it is characterised in that：Comprise the steps：
Obtain domain name mapping request by host process；
Host process creates subprocess；
Subprocess calls gethostbyname () function to obtain the corresponding IP address of domain name；
Whether host process monitoring subprocess gets IP address, if getting, then continues to run with；If not getting, then host process
Stop waiting after waiting Preset Time.
2. the non-method blocking acquisition domain name/IP address according to claim 1, it is characterised in that：Described host process is led to
Cross and call fork () function creation subprocess.
3. the non-method blocking acquisition domain name/IP address according to claim 1 and 2, it is characterised in that：Described son enters
Journey gets in Hou JiangIP address, IP address write default file, and host process detects whether this default file has content and then judgement
Whether subprocess gets IP address.
4. the non-method blocking acquisition domain name/IP address according to claim 1 and 2, it is characterised in that：Described son enters
Journey creates IP address file after getting IP address, and host process monitors whether to there is IP address file and then whether judges subprocess
Get IP address.
5. the non-method blocking acquisition domain name/IP address according to claim 1 and 2, it is characterised in that：Described master enters
After journey stops waiting, subprocess time-out exits.
6. the non-method blocking acquisition domain name/IP address according to claim 1 and 2, it is characterised in that：Described master enters
After journey stops waiting, subprocess is deleted by host process.
7. the non-system blocking acquisition domain name/IP address, it is characterised in that：Including such as lower unit：
Host process creating unit, for creating the host process accessing domain name；
Subprocess creating unit, creates subprocess by host process；
IP address acquisition unit, calls gethostbyname () function to obtain the corresponding IP address of domain name by subprocess.
8. the non-system blocking acquisition domain name/IP address according to claim 7, it is characterised in that：Described system is also wrapped
Including monitoring unit, whether host process gets IP address by monitoring unit monitoring subprocess, if getting, then continues to run with；
If not getting, then host process stops waiting after waiting Preset Time.
9. the non-system blocking acquisition domain name/IP address according to claim 7, it is characterised in that：Described subprocess creates
Unit is fork () function, and host process passes through fork () function creation subprocess.
10. the non-system blocking acquisition domain name/IP address according to claim 7, it is characterised in that：Described system is also
Including subprocess deletes unit, for deleting, after host process stops and waiting, the subprocess being created by this host process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610876689.3A CN106453679A (en) | 2016-09-30 | 2016-09-30 | Method and system for obtaining domain name IP address without blocking |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610876689.3A CN106453679A (en) | 2016-09-30 | 2016-09-30 | Method and system for obtaining domain name IP address without blocking |
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| CN201610876689.3A Pending CN106453679A (en) | 2016-09-30 | 2016-09-30 | Method and system for obtaining domain name IP address without blocking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889511A (en) * | 2019-01-31 | 2019-06-14 | 中国人民解放军61660部队 | Process DNS activity monitoring method, equipment and medium |
| CN111010463A (en) * | 2019-12-30 | 2020-04-14 | 深圳Tcl新技术有限公司 | Domain name conversion method, device and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116539A (en) * | 2012-02-15 | 2013-05-22 | 无锡江南计算技术研究所 | Performance loss testing method and device of fine-grained virtual system |
| CN103116519A (en) * | 2011-11-17 | 2013-05-22 | 深圳市共进电子股份有限公司 | Method of controlling embedded device and WEB embedded system |
| CN104331327A (en) * | 2014-12-02 | 2015-02-04 | 山东乾云启创信息科技有限公司 | Optimization method and optimization system for task scheduling in large-scale virtualization environment |
| CN104714839A (en) * | 2013-12-12 | 2015-06-17 | 腾讯科技（深圳）有限公司 | Method and device for controlling life cycle of processes |
-
2016
- 2016-09-30 CN CN201610876689.3A patent/CN106453679A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116519A (en) * | 2011-11-17 | 2013-05-22 | 深圳市共进电子股份有限公司 | Method of controlling embedded device and WEB embedded system |
| CN103116539A (en) * | 2012-02-15 | 2013-05-22 | 无锡江南计算技术研究所 | Performance loss testing method and device of fine-grained virtual system |
| CN104714839A (en) * | 2013-12-12 | 2015-06-17 | 腾讯科技（深圳）有限公司 | Method and device for controlling life cycle of processes |
| CN104331327A (en) * | 2014-12-02 | 2015-02-04 | 山东乾云启创信息科技有限公司 | Optimization method and optimization system for task scheduling in large-scale virtualization environment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889511A (en) * | 2019-01-31 | 2019-06-14 | 中国人民解放军61660部队 | Process DNS activity monitoring method, equipment and medium |
| CN109889511B (en) * | 2019-01-31 | 2021-10-01 | 中国人民解放军61660部队 | Process DNS activity monitoring method, equipment and medium |
| CN111010463A (en) * | 2019-12-30 | 2020-04-14 | 深圳Tcl新技术有限公司 | Domain name conversion method, device and storage medium |
| CN111010463B (en) * | 2019-12-30 | 2023-05-12 | 深圳Tcl新技术有限公司 | Domain name conversion method, device and storage medium |
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Application publication date: 20170222 |