CN104735174A - HTTP transparent proxy implementing method and device - Google Patents
HTTP transparent proxy implementing method and device Download PDFInfo
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- CN104735174A CN104735174A CN201510146025.7A CN201510146025A CN104735174A CN 104735174 A CN104735174 A CN 104735174A CN 201510146025 A CN201510146025 A CN 201510146025A CN 104735174 A CN104735174 A CN 104735174A
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The embodiment of the invention discloses a HTTP transparent proxy implementing method and device. When a DNS request sent by a user is received, through a URL list comprising all preset URLs needing HTTP transparent proxy, the IP address of a target server matched with the URL list is obtained and recorded; every time an HTTP request is received, secondary matching between the IP address in the HTTP request and the recorded IP address is conducted; if the secondary matching is successful, third matching between the complete URL in the HTTP request and all the URLs in the URL list is conducted; the HTTP request with successful third matching is redirected to a transparent proxy server; the HTTP request with second failed matching and third failed matching is sent to the target server. By the adoption of the HTTP transparent proxy implementing method and device, the HTTP requests can be more efficiently and accurately redirected.
Description
Technical field
The present invention relates to HTTP Proxy technology, particularly a kind of implementation method of HTTP Transparent Proxy and device.
Background technology
At present, the implementation method of common HTTP Transparent Proxy normally: by web-transporting device, such as: the transmission node equipment in the network such as router or switch, for each HTTP request received, be all redirected on Transparent proxy server.Transparent proxy server receives all HTTP request, and then according to rule, HTTP request is forwarded on destination server, or to sending user's return cache result of HTTP request.
In this process, in this process, each HTTP request can be resolved.But in practical application, not all URL is required to do HTTP Transparent Proxy, such as: have user only to want to do HTTP Transparent Proxy for some URL, or some application program only needs to do HTTP Proxy to some URL.In this case, cannot process at web-transporting device at present, cause all irrelevant requests all can issue Transparent proxy server.Therefore, in this case, the treatment effeciency of above-mentioned implementation method is just lower.
Summary of the invention
The object of the embodiment of the present invention is the implementation method and the device that provide a kind of HTTP Transparent Proxy, to improve the treatment effeciency of HTTP Transparent Proxy.
For achieving the above object, the embodiment of the invention discloses a kind of implementation method of HTTP Transparent Proxy, being applied to web-transporting device, comprising step:
According to the DNS request that user sends, obtain the DNS query result comprising the IP address of destination server; The IP address of described destination server is corresponding with the domain name in DNS request;
Domain name in described DNS request is carried out first with the domain name in each URL in the url list preset mate; The default all URL needing to carry out HTTP Transparent Proxy are comprised in described default url list;
When first the match is successful, record the IP address of described destination server;
After the arbitrary HTTP request receiving user's transmission, the IP address comprised is carried out second with the IP address of each destination server recorded mate in HTTP request; If second the match is successful, then URL complete in this HTTP request is carried out the 3rd with all URL in described default url list and mate; If the second coupling is unsuccessful, then this HTTP request is sent to destination server;
If the 3rd the match is successful, then this HTTP request is redirected to Transparent proxy server; If the 3rd coupling is unsuccessful, then this HTTP request is sent to destination server.
Wherein, the described DNS request sent according to user, obtains the step comprising the DNS query result of the IP address of destination server, can comprise:
Receive the DNS request that user sends, according to described DNS request, initiate DNS query to dns server;
Receive the Query Result comprising the IP address of destination server that dns server returns;
The IP address of destination server is sent to user, sends HTTP request to make user according to this IP address.
Describedly default need all URL carrying out HTTP Transparent Proxy, can be pre-set by user or be pre-set by the instruction of described web-transporting device according to application program.
Describedly URL complete in this HTTP request is carried out the 3rd with all URL in described default url list mate, Ke Yiwei: adopt L7filter (7 layers of filter) to mate.
Described web-transporting device can be router or switch.
The embodiment of the invention also discloses a kind of implement device of HTTP Transparent Proxy, be applied to web-transporting device, comprise:
DNS query result obtains unit, for the DNS request sent according to user, obtains the DNS query result comprising the IP address of destination server; The IP address of described destination server is corresponding with the domain name in DNS request;
First matching unit, mates for the domain name in described DNS request is carried out first with the domain name in each URL in the url list preset; The default all URL needing to carry out HTTP Transparent Proxy are comprised in described default url list;
IP address record cell, for when first the match is successful, records the IP address of described destination server;
Second matching unit, for after the arbitrary HTTP request receiving user's transmission, carries out second by the IP address comprised in HTTP request with the IP address of each destination server recorded and mates; If second the match is successful, then start the 3rd matching unit; If the second coupling is unsuccessful, then this HTTP request is sent to destination server;
3rd matching unit, mates for URL complete in this HTTP request is carried out the 3rd with all URL in described default url list; If the 3rd the match is successful, then this HTTP request is redirected to Transparent proxy server; If the 3rd coupling is unsuccessful, then this HTTP request is sent to destination server.
Wherein, described DNS query result obtains unit, can comprise:
DNS request receives subelement, for receiving the DNS request that user sends, according to described DNS request, initiates DNS query to dns server;
Query Result receives subelement, for receiving the Query Result comprising the IP address of destination server that dns server returns;
IP address sends subelement, for the IP address of destination server is sent to user, sends HTTP request to make user according to this IP address.
Describedly default need all URL carrying out HTTP Transparent Proxy, can be pre-set by user or be pre-set by the instruction of described web-transporting device according to application program.
Described 3rd matching unit can adopt L7filter to mate.
Described web-transporting device can be router or switch.
As seen from the above technical solutions, the implementation method of this HTTP Transparent Proxy that the embodiment of the present invention provides and device, when receiving the DNS request that user sends, by comprising the default url list needing to carry out all URL of HTTP Transparent Proxy, obtaining and recording the destination server IP address mated with url list; After receiving HTTP request, first carry out second by the IP address in HTTP request with the IP address of record and mate; Second after the match is successful, then carry out the 3rd with URL complete in this HTTP request with all URL in described default url list and mate; 3rd HTTP request that the match is successful is redirected to Transparent proxy server; Unsuccessful for second coupling and the unsuccessful HTTP request of the 3rd coupling are sent to destination server.
Visible, the implementation method of this HTTP Transparent Proxy that the embodiment of the present invention provides, first carries out second with the IP address of destination server with default url list and mates, namely carried out primary screening, adopt complete RUL and default url list to carry out the 3rd again to mate, namely carry out postsearch screening.Therefore, it is possible to more efficiently and be accurately redirected HTTP request.
Certainly, arbitrary product of the present invention is implemented or method must not necessarily need to reach above-described all advantages simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of the implementation method of the HTTP Transparent Proxy of the embodiment of the present invention;
A kind of structural representation of the implement device of the HTTP Transparent Proxy of Fig. 2 embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The implementation method of this HTTP Transparent Proxy that the embodiment of the present invention provides and device, when receiving the DNS request that user sends, by comprising the default url list needing to carry out all URL of HTTP Transparent Proxy, obtaining and recording the destination server IP address mated with url list; After receiving HTTP request, first carry out second by the IP address in HTTP request with the IP address of record and mate; Second after the match is successful, then carry out the 3rd with URL complete in this HTTP request with all URL in described default url list and mate; 3rd HTTP request that the match is successful is redirected to Transparent proxy server; Unsuccessful for second coupling and the unsuccessful HTTP request of the 3rd coupling are sent to destination server.The application embodiment of the present invention, can be redirected HTTP request more efficient and accurately.
See Fig. 1, a kind of flow process of the implementation method of the HTTP Transparent Proxy of the embodiment of the present invention, is applied to web-transporting device, comprises the steps:
Step 101, according to the DNS request that user sends, obtains the DNS query result comprising the IP address of destination server; The IP address of described destination server is corresponding with the domain name in DNS request.
In this step, specifically can comprise:
The DNS request that A, reception user send, according to described DNS request, initiates DNS query to dns server;
The Query Result comprising the IP address of destination server that B, reception dns server return;
C, the IP address of destination server is sent to user, send HTTP request to make user according to this IP address.
Step 102, carries out first by the domain name in described DNS request with the domain name in each URL in the url list preset and mates; The default all URL needing to carry out HTTP Transparent Proxy are comprised in described default url list.
It should be noted that, that presets described in the embodiment of the present invention needs all URL carrying out HTTP Transparent Proxy, can be pre-set or pre-set by the instruction of described web-transporting device according to application program by user.
Such as: user is configured in the URL arranging and need to carry out HTTP Transparent Proxy by web webpage or transparent service device, the URL that user is arranged is sent to the transport services device realizing the embodiment of the present invention, and these URL are saved in url list by transport services device.
In practical application, need to carry out HTTP Transparent Proxy as long as there is a user to be provided with certain URL, then all HTTP request comprising this URL all can be redirected to Transparent proxy server.Certainly, when also can arrange different URL different users, in described default url list, by the URL corresponding stored of user ID and setting thereof.So that after receiving the DNS request comprising user ID, carry out first according to user ID with the url list preset and mate; And when receiving the HTTP request comprising user ID, carrying out second according to user ID with the url list preset and mating and the 3rd coupling.
In addition, some application program in the process of implementation, some HTTP request is needed to be redirected to transparent service device, then can send to the transport services device realizing the embodiment of the present invention and comprise the instruction needing the URL carrying out HTTP Transparent Proxy, these URL are saved in url list by transport services device.
Step 103, when first the match is successful, records the IP address of described destination server.If the first coupling is unsuccessful, then the IP address of not record object server.
Such as: the URL in DNS request is:
http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol
Wherein domain name is
en.wikipedia.org
If had containing domain name in the url list preset
en.wikipedia.orguRL, then first the match is successful; Otherwise the first coupling is unsuccessful.
In practical application, the IP address of the destination server of record can be saved in default IP address list.
Step 104, after the arbitrary HTTP request receiving user's transmission, carries out second by the IP address comprised in HTTP request with the IP address of each destination server recorded and mates; If second the match is successful, then URL complete in this HTTP request is carried out the 3rd with all URL in described default url list and mate; If the second coupling is unsuccessful, then this HTTP request is sent to destination server.
If in the IP address of each destination server recorded, comprise the IP address comprised in HTTP request, then second the match is successful; Otherwise the second coupling is unsuccessful.
Realize the transport services device of the embodiment of the present invention after obtaining the IP address of destination server, this IP address can be sent to user, user sends HTTP request according to this IP address.
In this step, that is undertaken by the IP address of destination server and default url list exactly second is mated, and has carried out primary screening.But because an IP address can corresponding multiple URL, therefore also need to carry out the 3rd with complete URL with all URL in described default url list and mate, namely carry out programmed screening, to filter out the HTTP request needing to carry out HTTP Transparent Proxy accurately.
If in the url list preset, comprise and the complete identical URL of URL in HTTP request, then the 3rd the match is successful; Otherwise the 3rd coupling is unsuccessful.
Step 105, if the 3rd the match is successful, is then redirected to Transparent proxy server by this HTTP request; If the 3rd coupling is unsuccessful, then this HTTP request is sent to destination server.
Such as: the IP address in HTTP request packet is 208.80.154.224;
URL in HTTP request is
http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol
If the IP address of having recorded comprises 208.80.154.224,
If comprise/wiki/Hypertext_Transfer_Protocol in the url list preset
Then this HTTP request is redirected to Transparent proxy server.
In this step, L7filter (7 layers of filter) can be adopted to carry out deep packet for URL and to intercept, coupling is searched to each bag in URL.
It should be noted that, the web-transporting device described in the embodiment of the present invention can be router or switch.
From the above embodiments, the implementation method of the HTTP Transparent Proxy of the application embodiment of the present invention can be redirected HTTP request more efficient and accurately.In addition, due to only to the second HTTP request that the match is successful, then carrying out the 3rd with complete URL with all URL in described default url list and mate, is not therefore very high to the demand of computational resource.
See Fig. 2, a kind of structure chart of the implement device of the HTTP Transparent Proxy of the embodiment of the present invention, be applied to web-transporting device, this device is corresponding with the implementation method described in Fig. 1, comprising: DNS query result obtains unit 201, first matching unit 202, IP address record cell 203, second matching unit 204 and the 3rd matching unit 205.
Wherein, described DNS query result obtains unit 201, for the DNS request sent according to user, obtains the DNS query result comprising the IP address of destination server; The IP address of described destination server is corresponding with the domain name in DNS request.
In the present embodiment, described DNS query result obtains unit 201, can comprise:
DNS request receives subelement, for receiving the DNS request that user sends, according to described DNS request, initiates DNS query to dns server;
Query Result receives subelement, for receiving the Query Result comprising the IP address of destination server that dns server returns;
IP address sends subelement, for the IP address of destination server is sent to user, sends HTTP request to make user according to this IP address.
Described first matching unit 202, mates for the domain name in described DNS request is carried out first with the domain name in each URL in the url list preset; The default all URL needing to carry out HTTP Transparent Proxy are comprised in described default url list.
In the present embodiment, describedly default need all URL carrying out HTTP Transparent Proxy, can be pre-set by user or be pre-set by the instruction of described web-transporting device according to application program.
Described IP address record cell 203, for when first the match is successful, records the IP address of described destination server.
Described second matching unit 204, for after the arbitrary HTTP request receiving user's transmission, carries out second by the IP address comprised in HTTP request with the IP address of each destination server recorded and mates; If second the match is successful, then start the 3rd matching unit 205; If the second coupling is unsuccessful, then this HTTP request is sent to destination server.
Described 3rd matching unit 205, mates for URL complete in this HTTP request is carried out the 3rd with all URL in described default url list; If the 3rd the match is successful, then this HTTP request is redirected to Transparent proxy server; If the 3rd coupling is unsuccessful, then this HTTP request is sent to destination server.
In the present embodiment, the 3rd described matching unit can adopt L7filter to mate.
Web-transporting device described in the embodiment of the present invention can be router or switch.
From the above embodiments, the implement device of the HTTP Transparent Proxy of the application embodiment of the present invention can be redirected HTTP request more efficient and accurately.In addition, due to only to the second HTTP request that the match is successful, then carrying out the 3rd with complete URL with all URL in described default url list and mate, is not therefore very high to the demand of computational resource.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Each embodiment in this specification all adopts relevant mode to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. an implementation method for HTTP Transparent Proxy, is applied to web-transporting device, it is characterized in that, comprises step:
According to the DNS request that user sends, obtain the DNS query result comprising the IP address of destination server; The IP address of described destination server is corresponding with the domain name in DNS request;
Domain name in described DNS request is carried out first with the domain name in each URL in the url list preset mate; The default all URL needing to carry out HTTP Transparent Proxy are comprised in described default url list;
When first the match is successful, record the IP address of described destination server;
After the arbitrary HTTP request receiving user's transmission, the IP address comprised is carried out second with the IP address of each destination server recorded mate in HTTP request; If second the match is successful, then URL complete in this HTTP request is carried out the 3rd with all URL in described default url list and mate; If the second coupling is unsuccessful, then this HTTP request is sent to destination server;
If the 3rd the match is successful, then this HTTP request is redirected to Transparent proxy server; If the 3rd coupling is unsuccessful, then this HTTP request is sent to destination server.
2. implementation method according to claim 1, is characterized in that, the described DNS request sent according to user, obtains the step comprising the DNS query result of the IP address of destination server, comprising:
Receive the DNS request that user sends, according to described DNS request, initiate DNS query to dns server;
Receive the Query Result comprising the IP address of destination server that dns server returns;
The IP address of destination server is sent to user, sends HTTP request to make user according to this IP address.
3. implementation method according to claim 1, is characterized in that: describedly default need all URL carrying out HTTP Transparent Proxy, is pre-set or pre-set by the instruction of described web-transporting device according to application program by user.
4. implementation method according to claim 1, is characterized in that, describedly URL complete in this HTTP request is carried out the 3rd with all URL in described default url list mates, for: adopt L7filter (7 layers of filter) to mate.
5. the implementation method according to the arbitrary claim of claim 1-4, is characterized in that, described web-transporting device is router or switch.
6. an implement device for HTTP Transparent Proxy, is applied to web-transporting device, it is characterized in that, comprising:
DNS query result obtains unit, for the DNS request sent according to user, obtains the DNS query result comprising the IP address of destination server; The IP address of described destination server is corresponding with the domain name in DNS request;
First matching unit, mates for the domain name in described DNS request is carried out first with the domain name in each URL in the url list preset; The default all URL needing to carry out HTTP Transparent Proxy are comprised in described default url list;
IP address record cell, for when first the match is successful, records the IP address of described destination server;
Second matching unit, for after the arbitrary HTTP request receiving user's transmission, carries out second by the IP address comprised in HTTP request with the IP address of each destination server recorded and mates; If second the match is successful, then start the 3rd matching unit; If the second coupling is unsuccessful, then this HTTP request is sent to destination server;
3rd matching unit, mates for URL complete in this HTTP request is carried out the 3rd with all URL in described default url list; If the 3rd the match is successful, then this HTTP request is redirected to Transparent proxy server; If the 3rd coupling is unsuccessful, then this HTTP request is sent to destination server.
7. implement device according to claim 6, is characterized in that, described DNS query result obtains unit, comprising:
DNS request receives subelement, for receiving the DNS request that user sends, according to described DNS request, initiates DNS query to dns server;
Query Result receives subelement, for receiving the Query Result comprising the IP address of destination server that dns server returns;
IP address sends subelement, for the IP address of destination server is sent to user, sends HTTP request to make user according to this IP address.
8. implement device according to claim 6, is characterized in that: describedly default need all URL carrying out HTTP Transparent Proxy, is pre-set or pre-set by the instruction of described web-transporting device according to application program by user.
9. implement device according to claim 6, is characterized in that, described 3rd matching unit adopts L7filter to mate.
10. the implement device according to the arbitrary claim of claim 6-9, is characterized in that, described web-transporting device is router or switch.
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| CN110324436A (en) * | 2019-07-05 | 2019-10-11 | 网宿科技股份有限公司 | A kind of Proxy Method and device of transport-layer proxy |
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Also Published As
| Publication number | Publication date |
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| CN104735174B (en) | 2018-04-13 |
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