CN102724171A - Ipv4/ipv6 http protocol conversion method - Google Patents

Abstract

The invention discloses a scheme for IPv4/IPv6 HTTP protocol conversion and especially relates to a method for a design of an HTTP IPv4/IPv6 protocol conversion gateway. The gateway extracts a destination IPv4 URL from an HTTP request adapted by a navigation portal and requests a webpage from a destination server; and meanwhile, the URL of the requested webpage and a URL contained in a webpage content are dynamically added to an IPv6 address of a certain gateway in a gateway group according to a flow balancing demand, the URL is adapted to a destination website address: http: // ipv6 */ and the destination website address is returned to a user PC. Therefore, a function that an IPv6 terminal in an IPv6 network can access an IPv4 webpage in an IPv4 network can be realized.

Description

IPv4/IPv6 http protocol conversion method

Technical field

The present invention relates to a kind of method of IPv4/IPv6 http protocol conversion.

Background technology

The Internet is in the extensive use of social life every field and business-likely go deep into development and brought up the age of Internet economy of today jointly.The Internet is when the IPv4 epoch are obtained immense success; A series of problem also occurred, weary like the address space plaque, as to lack safety and service quality assurance, lacked the support of the service of moving and lack multimedia information dissemination, move the support of new application services such as inserting.To these problems, the IPv6 agreement is arisen at the historic moment, and through years of researches, test and deployment, has become a kind of procotol of maturation.Compare with the IPv4 agreement, the IPv6 agreement provides many new characteristics, for the development of Next Generation Internet provides more perfect support.Generally believe that IPv4 is the inexorable trend of Next Generation Internet development to the IPv6 transition.

IPv4 is meant under the prerequisite that does not influence the existing network application service to the IPv6 transition, realizes the transformation of network layer IPv4 agreement to the IPv6 agreement.Existing IPv4 network size is huge; The life cycle that technology such as routing CIDR and network address translation NAT has prolonged IPv4 between type field; Various circles of society also need a period of time to understanding and the acceptance of IPv6 in addition; Therefore IPv4 can not be accomplished to the TCP/IP network by the NCP network transition as nineteen eighty-two ARPNet to the transition of IPv6 overnight, and will be long-term, a progressive process.

IPv4 must experience one long period to the process of IPv6 transition, and the problem of interconnecting that how to solve network in this becomes one of focus that the Next Generation Internet development pays close attention in period.IETF sets up NGTrans working group (2002 be reassembled as v6ops working group) immediately and solves IPv4/IPv6 network transition problem after 1994 release the IPv6 agreement.The work of this working group is fruitful, has proposed a large amount of basic transitional technology schemes, but these schemes all are to design to the specific transitions scene, and exists limited applicability, safety problem and scalability problem.The emphasis of this working group's research no longer is basic transitional technology at present, and lays particular emphasis on the IPv4/IPv6 co-existence network problem under the research heterogeneous networks applied environment.

IPv4 comprises the transition of the main frame and the network equipment to the IPv6 transition, and wherein the transition of the network equipment is the emphasis of transition research.In IPv4/IPv6 transition period, the network equipment need adopt suitable transitional technology to guarantee the proper communication of transition network.Transfer gateway plays function served as bridge as the IPv4/IPv6 network edge device in the communication process of transition network.Along with progressively going deep into of IPv4/IPv6 network transition; The complexity and the potential safety hazard of transition network further increase; Conventional conversion gateway designs scheme can not satisfy actual application and demand for security gradually; Therefore press for transfer gateway is further furtherd investigate, the safety that achieves complicated transition scene lower network is interconnected.

HTTP is an important use layer protocol in the TCP/IP protocol suite, is the technical foundation that Web service realizes.Web service is a most important applications on the present the Internet, also is internet development and the important motive force of popularizing.According to the IAB statistics, the flow of Internet last 80% is from Web server at present.Except Wbe uses, other are much served, and like file transmission, audio frequency and video flow transmission etc., also can use http protocol to realize.Data interaction between major applications software and the sql server and the data, services on the Internet all are http traffics.Even some other agreement such as SMTP, SOCKS etc., can transmit through HTTP tunnel (HTTP Tunnel).We can say that present Internet goes up most data and transmits through http protocol.Along with the application software of B/S pattern becomes main flow gradually, the development of technology such as Web Service, the last HTTP data volume of Internet also can further increase.

But, can't directly carry out http communication between the main frame of different agreement stack because IPv6 and IPv4's is incompatible.Even inner at two stack main frames, the software of pure (Native) IPv4 also can't be visited pure IPv6 HTTP service.Equally, pure IPv4 HTTP service also can't be used by pure IPv6 software.The relevant application software of present most HTTP can't compatible IPv6, designs and develops these softwares again and wants the manpower of labor, financial resources and time, causes the serious waste of existing software resource simultaneously, does not meet the PIv6 transition basic principle of IETF proposition.

Summary of the invention

The invention discloses a kind of scheme of IPv4/IPv6HTTP protocol conversion.It relates to a kind of method for designing of HTTP IPv4/IPv6 protocol conversion gateway, and gateway extracts the purpose IPv4URL from the HTTP request of rewriting through the navigation door, and asks for webpage to this destination server; Simultaneously with the URL that is comprised in the URL of the webpage of asking for and the web page contents; The IPv6 address that dynamically adds a certain gateway among the gateway crowd according to the needs of flow equalization; This URL is rewritten into http://ipv6*/purpose station address returns to user PG, thereby the function of the IPv4 webpage in the IPv4 network can be visited in the IPv6 terminal in the realization IPv6 network.

The technical scheme that the present invention adopts is following:

A kind of IPv4/IPv6 http protocol conversion method, it may further comprise the steps:

1) the IPv6 network user asks the server of connected reference IPv4 network;

2) acting server deposits buffer memory in to IPv4 web server requests data and download process;

3) acting server sends to the IPv6 browser with the data that obtain.

The detailed step of said step 1) is: acting server starts the request that browser in the IPv6 network is waited in the back; And startup thread pool; In receiving the IPv6 network, during the request of browser, the request that receives is resolved the result queries buffer memory that obtains according to parsing.

Said step 2) detailed step is: if corresponding data are arranged in the buffer memory, and just direct return data, otherwise,, deposit buffer memory then in handling after the content download just to the address of these data of web server requests.

The HTTP IPv4/lPv6 protocol conversion gateway of the present invention design can make full use of existing a large amount of software resource in transition stage, realizes seamless, efficiently, intercommunication cheaply, be a kind of have very much study and the intercommunication solution of using value.And the present invention is conceived to http protocol, can simplified design, and the also control more easily at aspects such as performance, fail safe and reliabilities.

Description of drawings

Fig. 1 is the scheme principle schematic of IPv4/IPv6 http protocol conversion;

Fig. 2 is the flow chart of browser communication module;

Fig. 3 is the flow chart of web server communication module;

Fig. 4 is the flow chart of data processing module;

Fig. 5 is the flow chart of cache manager.

Embodiment

The present invention is a kind of IPv4/IPv6 http protocol conversion method, may further comprise the steps:

1) the IPv6 network user asks the server of connected reference IPv4 network;

2) acting server deposits buffer memory in to IPv4 web server requests data and download process;

3) acting server sends to the IPv6 browser with the data that obtain.

The detailed step of step 1) is: acting server starts the request that browser in the IPv6 network is waited in the back; And startup thread pool; In receiving the IPv6 network, during the request of browser, the request that receives is resolved the result queries buffer memory that obtains according to parsing.

Step 2) detailed step is: if corresponding data are arranged in the buffer memory, and just direct return data, otherwise,, deposit buffer memory then in handling after the content download just to the address of these data of web server requests.

IPv4/IPv6 http protocol conversion plan of the present invention relates to the method for designing of HTTP IPv4/IPv6 protocol conversion gateway; As shown in Figure 1; Gateway extracts the purpose IPv4 URL from the HTTP request of rewriting through the navigation door, and asks for webpage to this destination server; Simultaneously with the URL that is comprised in the URL of the webpage of asking for and the web page contents; The IPv6 address that dynamically adds a certain gateway among the gateway crowd according to the needs of flow equalization; This URL is rewritten into http://ipv6*/purpose station address returns to user PC, thereby the function of the IPv4 webpage in the IPv4 network can be visited in the IPv6 terminal in the realization IPv6 network.

The IPv6 Http proxy gateway that the present invention relates to comprises four modules: browser communication module, web server communication module, data processing module and cache manager.Wherein:

Like Fig. 2, the browser communication module is responsible for carrying out the communication of acting server and browser, promptly receives request from browser, from buffer memory, obtains data, sends data to browser.

Like Fig. 3, web server communication module and Web server carry out communication, and request is sent to the web server, downloading page content then, and give caching management module with it.

Like Fig. 4, data processing module is analyzed downloaded contents, and parsing etc. is filtered in replacement, then it is submitted to cache manager.The content of if needed from the web server, obtaining is once more then submitted to cache manager with its address, and repeats above-mentioned steps.

Like Fig. 5; Cache manager receives the request from the browser communication module; If do not have corresponding data in the buffer memory, then request sent to web server communication module, after waiting to receive the data of web server communication module and data processing module; Deposit data in buffer memory, and content is returned to the browser communication module.

Flow process of the present invention is following:

The step 1:IPv6 network user asks the server of connected reference IPv4 network.

Visit the IPv6 network user under the server scene of IPv4 network; The user browser communication module is to IPv6 Http proxy gateway initiation request; IPv6 Http proxy gateway starts thread pool; Request to receiving is resolved, and extracts the purpose IPv4 URL from ask through the HTTP that rewrote of navigation door the result queries buffer memory that obtains according to parsing.If corresponding data are arranged in the buffer memory, then directly get into step 3; Otherwise, get into step 2.

Step 2:IPv6 Http proxy gateway deposits buffer memory in to IPv4 web server requests data and download process.

In buffer memory, do not have under the corresponding data conditions; IPv6 Http proxy gateway sends request through web server communication module to IPv4 network Web server; Data download then, data processing module is analyzed downloaded contents, and replacement is filtered and is resolved etc.; With the URL that is comprised in the URL of the webpage of asking for and the web page contents; Dynamically add the IPv6 address of a certain gateway among the gateway crowd according to the needs of flow equalization, this URL is rewritten into http://ipv6*/purpose station address, then it is submitted to cache manager.

Step 3: cache manager sends to the IPv6 browser with the data that obtain.

From buffer memory, ask to obtain after the data, cache manager sends to the IPv6 browser with data through the browser communication module, accomplishes whole communication process.

Claims (3)

1. IPv4/IPv6 http protocol conversion method is characterized in that may further comprise the steps:

1) the IPv6 network user asks the server of connected reference IPv4 network;

2) acting server deposits buffer memory in to IPv4 web server requests data and download process;

3) acting server sends to the IPv6 browser with the data that obtain.

2. IPv4/IPv6 http protocol conversion method as claimed in claim 1 is characterized in that:

The detailed step of said step 1) is: acting server starts the request that browser in the IPv6 network is waited in the back; And startup thread pool; In receiving the IPv6 network, during the request of browser, the request that receives is resolved the result queries buffer memory that obtains according to parsing.

3. IPv4/IPv6 http protocol conversion method as claimed in claim 1 is characterized in that:

Said step 2) detailed step is: if corresponding data are arranged in the buffer memory, and just direct return data, otherwise,, deposit buffer memory then in handling after the content download just to the address of these data of web server requests.

Images