CN102196506A - Network resource access control method, system and device - Google Patents
Network resource access control method, system and device Download PDFInfo
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- CN102196506A CN102196506A CN2010101256784A CN201010125678A CN102196506A CN 102196506 A CN102196506 A CN 102196506A CN 2010101256784 A CN2010101256784 A CN 2010101256784A CN 201010125678 A CN201010125678 A CN 201010125678A CN 102196506 A CN102196506 A CN 102196506A
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Abstract
The invention discloses a network resource access control method, a network resource access control system and a network resource access control device. The method comprises that: a gateway receives a first connection request from a terminal; when the first connection request is judged to carry cache identification information, and the terminal does not request for network resources requested by the first connection request for the first time after login, the gateway transmits a second connection request from which the cache identification information is removed to a server providing the network resources; and the gateway receives the network resources transmitted according to the second connection request from the server, and forwards the received network resources to the terminal. By the method, the system and the device, the frequent transmission of the connection requests from the terminal is avoided, the load of network equipment is reduced, and the network resources are saved.
Description
Technical field
The present invention relates to networking technology area, refer to a kind of network resource access control method, system and device that is used between the terminal and the webserver especially.
Background technology
In the conventional network resources system, terminal is by the server of accesses network resource provider, and obtaining Internet resources is service content.Caching mechanism basic in the network resource accession has been described in the HTTP1.1 agreement.Describe both sides by clear and definite message header identification field between terminal and the server and whether support caching function.
Be illustrated in figure 1 as in the prior art terminal to the flow chart of the server requests Internet resources of serving the provider.Wherein:
When terminal is visited a certain Internet resources first, comprise the following steps: that (1) terminal initiates connection request; (2) WAP (wireless access protocol) (Wireless Access Protocol, WAP) the gateway forwards connection request is given server; (3) server issues Internet resources; (4) WAP gateway transmission network resource is given terminal.Wherein, when server issues Internet resources, the descriptor of Internet resources be can carry, recent renewal time (LastModified), valid expiration date (Expires) and other buffer memory control informations (Cache Control) etc. comprised.
When terminal was repeatedly visited a certain Internet resources, the process of each visit comprised the following steps: that (11) terminal initiates connection request, owing to be not visit for the first time, therefore carries buffer memory sign (IfModified Since) field in connection request; (12) WAP gateway is transmitted connection request and is given server; (13) server issues response message notice terminal content and does not upgrade; (14) WAP gateway transmitted response message is given terminal.
That is to say whether terminal has caching function by the terminal that the identification field in the message header of connection request identifies the request of transmission in the prior art, whether server also can identify this requested content and allow to be buffered.When allowing, the content that server generally will notify terminal to ask allows the term of validity that is buffered, and after the term of validity, terminal can be initiated request again, so that obtain new content.Terminal can be carried the relevant inquiring condition in connection request, whether the content of query caching is updated, and after this partial content of discovering server upgrades, the content after upgrading is offered terminal, or this partial content of discovering server is not when upgrading, and the notice terminal does not need to upgrade.The purpose of this caching mechanism is with minimum information interaction amount, realizes effectively and timely the content information of buffer memory in the new terminal more.
The implementation of above-mentioned network resource accession, at some terminals, because the problem that exists during its caching mechanism is realized (for example: the destroyed grade of cache contents or since be provided with cause its repetitive requests etc. before the deadline), in the time need obtaining the Internet resources of being asked again, can resend connection request, and owing to carry the buffer memory identification field in the connection request, make the server content of the Internet resources of being asked of can having thought in the terminal buffer memory, give terminal and can not issue the network resource content of being asked again.Terminal then can frequently send the connection request to the identical network resource under the situation that can not regain Internet resources.WAP gateway all can directly be transmitted to the server that Internet resources are provided accordingly with connection request at every turn, because still before the deadline, therefore, server all can issue the unaltered information of network resource content at every turn and give terminal, for example: issue code 304 (Not Modified) at every turn, do not change with this network resource content of notice terminal.And the content of the Internet resources of being asked can not sent to user terminal, cause terminal can't normally show this partial content.
Because terminal is the frequent behavior that sends connection request in the Internet resources term of validity, causes server to receive a large amount of invalidation request, causes very big service processing pressure to the network equipment.
Especially when having the same Internet resources of a plurality of terminal request of caching function, WAP gateway can send to the request of each terminal ISP's server one by one.When above-mentioned terminal frequently sends the situation generation of request, because WAP gateway does not possess caching function, but directly carry out the information forwarding, may cause still being in a large amount of forwardings of the Internet resources connection request in the buffer memory term of validity, cause waste of network resources.
Summary of the invention
The embodiment of the invention provides a kind of network resource access control method, system and device, is used for solving the prior art terminal and frequently sends connection request, increases network equipment load, causes the problem of network resources waste.
A kind of network resource access control method comprises:
First connection request that the gateway receiving terminal sends;
Carry buffer memory identification information and described terminal be not in judging described first connection request when asking Internet resources that described first connection request asks after this is reached the standard grade first, described gateway sends second connection request removed behind the described buffer memory identification information to the server that described Internet resources are provided; And
Receive the Internet resources that described server issues according to described second connection request, and be transmitted to described terminal.
A kind of network resource visit control system comprises: terminal, gateway and the server of Internet resources is provided;
Described gateway is used to receive first connection request that described terminal sends; In judging described first connection request, carry buffer memory identification information and described terminal and be not when asking Internet resources that described first connection request asks after this is reached the standard grade first, send second connection request removed behind the described buffer memory identification information to the described server that described Internet resources are provided; And receive the Internet resources that described server issues according to described second connection request, and be transmitted to described terminal;
Described server is used for issuing Internet resources according to second connection request behind the described buffer memory identification information of removal and gives described terminal;
Described terminal is used to send Internet resources first connection request, and receives the Internet resources that described server issues.
A kind of network resource accession control device comprises:
Receiver module is used for first connection request that receiving terminal sends;
First judge module is used for judging whether described first connection request carries the buffer memory identification information, and judges that whether described terminal is to ask the Internet resources of being asked in described first connection request after this is reached the standard grade first;
First Executive Module, be used for judging described first connection request and carry buffer memory identification information and described terminal when not being the Internet resources of asking first after this is reached the standard grade to be asked in described first connection request, send second connection request removed behind the described buffer memory identification information to the described server that described Internet resources are provided when described first judge module;
Feedback module is used to receive the Internet resources that described server issues according to second connection request of removing behind the described buffer memory identification information, and is transmitted to described terminal.
The network resource access control method that the embodiment of the invention provides, system and device are by first connection request of gateway receiving terminal transmission; Carry buffer memory identification information and described terminal be not in judging described first connection request when asking Internet resources that described first connection request asks after this is reached the standard grade first, described gateway sends second connection request removed behind the described buffer memory identification information to the server that described Internet resources are provided; And receive the Internet resources that described server issues according to described second connection request, and be transmitted to described terminal.This method is not when visiting the Internet resources of being asked first in terminal, by gateway amended connection request is transmitted to server, server then can directly issue Internet resources, make terminal can get access to the Internet resources of being asked correctly, timely, avoided terminal frequently to send connection request, alleviate the load of the network equipment, saved Internet resources.
Description of drawings
Fig. 1 is the realization flow figure of terminal access network resource in the prior art;
Fig. 2 is the flow chart of network resource access control method in the embodiment of the invention;
Fig. 3 is the flow chart of network resource access control method in the embodiment of the invention one;
Fig. 4 is the process chart between the network element of network resource access control method in the embodiment of the invention one;
Fig. 5 is the flow chart of network resource access control method in the embodiment of the invention two;
Fig. 6 is the process chart between the network element of network resource access control method in the embodiment of the invention two;
Fig. 7 is the structural representation of network resource visit control system in the embodiment of the invention;
Fig. 8 is a kind of structural representation of network resource accession control device in the embodiment of the invention;
Fig. 9 is the another kind of structural representation of network resource accession control device in the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of network resource access control method, by gateway the network resource accession of terminal is controlled, make service content supplier (Service Provider on the terminal access the Internet, during the Internet resources that SP) provided, can accurately get access to needed Internet resources, and avoid repeated accesses to obtain effectively.
In the network resource access control method that the embodiment of the invention provided, its flow process comprises the following steps: as shown in Figure 2
Step S11: the connection request (first connection request) that the gateway receiving terminal sends.
Preferable, above-mentioned gateway is a WAP gateway, can certainly be other gateway.
Step S12: gateway judges whether the connection request that receives carries the buffer memory sign.
When described connection request carries the buffer memory sign, execution in step S14.When not carrying, execution in step S13.
Step S13: the normal flow according to buffer memory Internet resources is not handled connection request.
Step S14: whether this asks the Internet resources of being asked in the above-mentioned connection request after reaching the standard grade first to judge this terminal.
When determining terminal is not when visiting the Internet resources of being asked first after this is reached the standard grade, execution in step S15; Otherwise execution in step S17.
Step S15: the connection request (second connection request) that gateway sends behind the removal buffer memory identification information is given the server that Internet resources are provided.
Step S16: server issues Internet resources by gateway and gives terminal.
Server issues Internet resources and gives terminal according to removing connection request behind the buffer memory identification information.Thereby make terminal can in time get access to required Internet resources, avoid the frequent transmission of connection request.
Preferable, said method also comprises:
Step S17: effectively whether the Internet resources of the judgement terminal institute buffer memory that the gateway basis gets access to result of determination, transmission information comprises to terminal: the Internet resources after the renewal that response message that the network resource content that the transmission sign is asked does not upgrade or forwarding server issue are to terminal.
When determining that terminal is the Internet resources that visit was first asked after this was reached the standard grade, whether effectively the Internet resources of the judgement terminal institute buffer memory that will be got access to by gateway result of determination send to terminal, and Internet resources send to terminal after the renewal that when the Internet resources of judging terminal institute buffer memory are invalid server is issued.
Above-mentioned by gateway with the Internet resources of the terminal institute buffer memory that gets access to whether effectively result of determination send to terminal, and Internet resources send to terminal after judging the renewal that server is issued when invalid.Comprise two kinds of situations, a kind of is to judge by gateway whether the Internet resources of terminal institute buffer memory are effective, and a kind of is to judge by server whether the Internet resources of terminal institute buffer memory are effective.Describe (gateway all is that example describes with the WAP gateway in the following embodiments) below by two specific embodiments.
Embodiment one:
The network resource access control method that the embodiment of the invention provides, during the terminal access network resource, if it is the Internet resources that request was first asked after this was reached the standard grade that WAP gateway is determined terminal, connection request is transmitted to server, judge by server whether the Internet resources of terminal buffers are effective.This method flow as shown in Figure 3, execution in step is as follows:
Step S101: terminal sends connection request to WAP gateway.
When terminal needs the accesses network resource, can send connection request, generally can indicate the address information of the Internet resources that will visit in the connection request.Generally can pass through URL(uniform resource locator) (Uniform/UniversalResource Locator, URL; Or title web page address) comes marked network resource addresses information.
The connection request that step S102:WAP gateway receiving terminal sends.
Step S103: judge in the connection request that receives whether carry the buffer memory identification information.
After the WAP terminal receives connection request, it is resolved, judge wherein whether carry the buffer memory identification information, for example: the If-Modified-Since field, when this field, think and carried the buffer memory identification information, otherwise think and do not carry the buffer memory identification information.
If, execution in step S105; Otherwise, execution in step S104.
Step S104: the normal flow according to buffer memory Internet resources is not handled connection request, issues Internet resources by server and gives terminal.
If promptly do not carry the buffer memory sign, then terminal does not possess the buffer memory ability or this Internet resources do not allow to be buffered, then handle according to the normal flow under the caching situation not, WAP gateway is transmitted to the server that these Internet resources are provided with connection request, and server issues Internet resources by WAP gateway and gives terminal.
Step S105: judge whether this terminal is the Internet resources of being asked in the connection request that request received first after this was reached the standard grade.
WAP gateway is generally according to the address information of Internet resources of the visit of asking that comprises in the connection request, URL for example, judge that whether this back of reaching the standard grade of terminal visits this network address first, determines whether terminal visits the pairing Internet resources in this network address first.
If, execution in step S108; Otherwise, execution in step S106.
Connection request behind the step S106:WAP gateway transmission removal buffer memory identification information is to corresponding server.
Be WAP gateway determine this terminal be not after this is reached the standard grade first the request asked Internet resources the time, the buffer memory identification information in the connection request that receives is removed, for example: remove the If-Modifled-Since field in the connection request.Again after the encapsulation, the connection request behind the removal buffer memory identification information is sent to the server that Internet resources are provided.Thereby can issue Internet resources smoothly to terminal after making server receive connection request, ensure that terminal can get access to correct network resource content information, reduce follow-up unnecessary repetitive requests.
Simultaneously, WAP gateway writes down Internet resources that this connection request relates to and the terminal iidentification of visiting these Internet resources, shows that this terminal asked the Internet resources that relate in the connection request.
Step S107: server issues Internet resources and gives terminal.
Server issues the terminal that Internet resources are given the request Internet resources according to the connection request of removing behind the buffer memory identification information.
Step S108:WAP gateway directly sends to the server that the Internet resources of being asked are provided with connection request.
WAP gateway will receive connection request and send to before the server that Internet resources are provided, the cache information of the Internet resources that the record terminal is asked.
Step S109: server judges whether the Internet resources of terminal buffers are effective.
If, execution in step S110; Otherwise, execution in step S111.
Server judges according to the descriptor that receives connection request and these Internet resources whether the Internet resources of terminal buffers are effective.Wherein, can comprise update time, valid expiration date and other buffer memory control informations of these Internet resources in the descriptor.
Server is according to the update time and/or the valid expiration date of the Internet resources of being asked that carry in the connection request that will receive, and compares with update time and/or valid expiration date in the descriptor, determines whether the Internet resources of terminal buffers are effective.When in the above-mentioned connection request with descriptor in update time and/or valid expiration date corresponding when identical, confirm that the Internet resources of terminal buffers are effective, otherwise invalid.
Step S110: server returns the network resource content that response message notice terminal asks and does not upgrade.
Server returns response message by WAP gateway to the terminal that sends connection request, carries the state code of content in the response message, and the Internet resources of asking in order to marking terminal are effectively, the renewal of not making amendment.
Step S111: server issues the Internet resources of being asked and gives terminal.
When server judges that the Internet resources of terminal buffers are invalid, the Internet resources after upgrading can be handed down to the terminal of the request of transmission; Simultaneously, the cache information that writes down among the WAP gateway deletion step S108.
A specific implementation example of the above-mentioned network resource access control method that the embodiment of the invention one provides as shown in Figure 4.With accesses network address (being URL) is that the Internet resources of http: // 61.135.154.43/info/disengag.gif are example, specifically comprises the following steps:
Step S121: terminal pins is initiated connection request to network address http: // 61.135.154.43/info/disengag.gif.
Carry the buffer memory identification information in the connection request, i.e. If-Modified-Since field, this field comprises descriptor: Tue, 04Sep 2007 02:01:22 GMT.
Step S122:WAP gateway judges in the connection request that receives whether carry the buffer memory identification information.
Promptly, judge whether this terminal is cached with the Internet resources of this network address correspondence according to the If-Modifled-Since field in the connection request.
If execution in step S126 is arranged; Otherwise, execution in step S123, the normal flow during promptly according to buffer memory Internet resources is not handled.
Step S123: connection request is transmitted to the server that these Internet resources are provided.
Step S124: server issues Internet resources to WAP gateway.
Server issues the network address http in the connection request: the Internet resources of // 61.135.154.43/info/disengag.gif correspondence are given the terminal of the request of transmission.
The Internet resources that step S125:WAP gateway issues server are transmitted to the terminal of the request of transmission.
Step S126: judge whether this terminal is the network address that visit was first asked after this was reached the standard grade.
If, execution in step S130; Otherwise, execution in step S127.
Connection request behind the step S127:WAP gateway transmission removal buffer memory identification information is to server.
Be that WAP gateway removes the If-Modified-Since field in the connection request that receives, connection request sent to the server that Internet resources are provided.Simultaneously, WAP gateway writes down the network address that this connection request relates to and the terminal iidentification of visiting this network address, shows that this terminal asked the network address that relates in the connection request.
Preferable, WAP gateway also can not remove the If-Modifled-Since field, and has lost efficacy by the information of revising other field identification terminal buffers, needs server to issue the Internet resources of this network address correspondence again.
Step S128: server issues Internet resources to WAP gateway.
Server issues the network address http in the connection request: the Internet resources of // 61.135.154.43/info/disengag.gif correspondence are given the terminal of the request of transmission.
Carry the descriptor of Internet resources simultaneously, for example: issue time T hu, 17Apr 2008 08:28:11GMT, update time Thu, 17 Apr, 2008 06:00:00 GMT, valid expiration date Thu, 17 Apr 200810:00:00 GMT or the like.
The Internet resources that step S129:WAP gateway issues terminal are transmitted to the terminal of the request of transmission.
WAP gateway is the descriptor of transmission network resource simultaneously.
Step S130:WAP gateway directly sends to the server that the Internet resources of being asked are provided with connection request.
Step S131: server judges whether the Internet resources of terminal buffers are effective.
If, execution in step S132; Otherwise, execution in step S134.
Server will receive the valid expiration date Tue in the connection request, and the valid expiration date in the descriptor of 04Sep 2007 02:01:22 GMT and local these Internet resources that are provided with compares, and determines whether these Internet resources of terminal buffers are effective.Can certainly judge according to update time or other buffer memory control informations.
Step S132: server returns response message to WAP gateway.
The network resource content that step S133:WAP gateway forwards response message notice terminal is asked does not upgrade.
(for example: field 304), the Internet resources that marking terminal is asked do not upgrade to carry not Modified in the response message of transmitting.
When there is renewal in effective time limit, can carry simultaneously so that inform the new valid expiration date of these Internet resources of terminal.
Step S134: server issues Internet resources to WAP gateway.
Server issues the network address http in the connection request: the Internet resources of // 61.135.154.43/info/disengag.gif correspondence are given the terminal of the request of transmission.
Carry the descriptor of Internet resources simultaneously, for example: issue time T hu, 17Apr 2008 08:28:11GMT, update time Thu, 17Apr 2008 06:00:00 GMT, valid expiration date Thu, 17 Apr 200810:00:00 GMT or the like.
The Internet resources that step 135:WAP gateway issues terminal are transmitted to the terminal of the request of transmission.
WAP gateway is the descriptor of transmission network resource simultaneously.
Embodiment two
The network resource access control method that the embodiment of the invention provides, during the terminal access network resource, if it is the Internet resources that request was first asked after this was reached the standard grade that WAP gateway is determined terminal, judges further whether the information of terminal buffers is effective, and carry out subsequent step according to judged result.This method flow as shown in Figure 4, execution in step is as follows:
Step S201-S207 repeats no more with the step S101-S107 among the above-mentioned embodiment one herein.
Above-mentionedly be judged as when being execution in step S208 as step S205.
Step S208:WAP gateway judges whether the Internet resources of terminal buffers are effective.If, execution in step S209; Otherwise, execution in step S210.
WAP gateway judges according to the descriptor that receives these Internet resources of connection request and local cache whether the Internet resources of terminal buffers are effective.Wherein, can comprise update time, valid expiration date and other buffer memory control informations of these Internet resources in the descriptor.
WAP gateway is specifically with the update time and/or valid expiration date of the Internet resources of being asked that carry in the connection request that receives, and compares with update time and/or valid expiration date in the descriptor; Whether the Internet resources of determining terminal buffers are effective.When in the above-mentioned connection request with descriptor in update time and/or valid expiration date corresponding when identical, confirm that the Internet resources of terminal buffers are effective, otherwise invalid.
Stored the descriptor of each Internet resources in each server that Internet resources are provided in the WAP gateway in advance, when the valid expiration date of certain Internet resources is expired, terminal can be again to corresponding server request descriptor, so that upgrade the descriptor of these Internet resources.The update time of the Internet resources of being asked that WAP gateway returns according to server and/or valid expiration date are upgraded update time and/or the valid expiration date in the descriptor of these Internet resources of local cache.When server does not have success response and issues descriptor, delete the descriptor of these Internet resources.
WAP gateway can be set up form, stores the descriptor of each Internet resources, comprise in the descriptor with storage the time valid expiration date be example, the form of foundation can be as shown in table 1.
Table 1
| The network address | Valid expiration date |
| http://219.133.40.48/images/face/online/1-1.gif | Fri，18?Apr?200808:27:20?GMT |
| http://121.14.76.208：8080/qbar/sysmsg.gif | Fri，18?Apr?200808:28:02?GMT |
| ...... | ...... |
Step S209:WAP gateway returns the network resource content that response message notice terminal asks and does not upgrade.
WAP gateway returns response message to the terminal that sends connection request, carries the state code of content in the response message, and the Internet resources of asking in order to marking terminal are effectively, the renewal of not making amendment.
Step S210: connection request is sent to the server that the Internet resources of being asked are provided.
At this moment, WAP gateway can directly be transmitted to the server that the Internet resources of being asked are provided with connection request, more amended connection request is sent to this server after also can removing the buffer memory identification information.
Step S211: server issues the Internet resources of being asked and gives terminal.
In fact, when WAP gateway judged that the Internet resources of terminal buffers are invalid, the Internet resources that server also can be judged terminal buffers according to the connection request that receives were invalid, and perhaps the WAP webmaster is directly with the judged result announcement server.Server then can be handed down to the Internet resources after upgrading the terminal of the request of transmission.
A specific implementation example of the above-mentioned network resource access control method that the embodiment of the invention two provides as shown in Figure 5.With accesses network address http: // 121.14.76.208:8080/qbar/online.gif is an example, specifically comprises the following steps:
Step S221: terminal pins is initiated connection request to network address http: // 121.14.76.208:8080/qbar/online.gif.
Carry the buffer memory identification information in the connection request, i.e. If-Modified-Since field, this field comprises descriptor: Tue, 08 Jan, 2008 10:06:30 GMT.
Step S222:WAP gateway judges in the connection request that receives whether carry the buffer memory identification information.
Promptly, judge whether this terminal is cached with the Internet resources of this network address correspondence according to the If-Modified-Since field in the connection request.
If execution in step S226 is arranged; Otherwise, execution in step S223, the normal flow during promptly according to buffer memory Internet resources is not handled.
Step S223: connection request is transmitted to the server that these Internet resources are provided.
Step S224: server issues Internet resources to WAP gateway.
Server issues the network address http in the connection request: the Internet resources of // 121.14.76.208:8080/qbar/online.gif correspondence are given the terminal of the request of transmission.
The Internet resources that step S225:WAP gateway issues server are transmitted to the terminal of the request of transmission.
Step S226: judge whether this terminal is the network address that visit was first asked after this was reached the standard grade.
If, execution in step S230; Otherwise, execution in step S227.
Connection request behind the step S227:WAP gateway transmission removal buffer memory identification information is to server.
Be that WAP gateway removes the If-Modified-Since field in the connection request that receives, connection request sent to the server that Internet resources are provided.Simultaneously, WAP gateway writes down the network address that this connection request relates to and the terminal iidentification of visiting this network address, shows that this terminal asked the network address that relates in the connection request.
Preferable, WAP gateway equally also can not remove the If-Modified-Since field, and has lost efficacy by the information of revising other field identification terminal buffers, needs server to issue the Internet resources of this network address correspondence again.
Step S228: server issues Internet resources to WAP gateway.
Server issues the network address http in the connection request: the Internet resources of // 121.14.76.208:8080/qbar/online.gif correspondence are given the terminal of the request of transmission.
Carry the descriptor of Internet resources simultaneously, for example: issue time T hu, 17Apr 2008 08:31:56GMT, update time Tue, 08 Jan, 2008 10:06:30 GMT, valid expiration date Fri, 18 Apr 20080831:56 GMT or the like.
The Internet resources that step S229:WAP gateway issues terminal are transmitted to the terminal of the request of transmission.
WAP gateway is the descriptor of transmission network resource simultaneously.
Step S230:WAP gateway judges whether the Internet resources of terminal buffers are effective.
If, execution in step S231; Otherwise, execution in step S232.
WAP gateway will receive the valid expiration date Tue in the connection request, and the valid expiration date in the descriptor of 08Jan 2008 10:06:30 GMT and local these Internet resources that are provided with compares, and determines whether these Internet resources of terminal buffers are effective.Can certainly judge according to update time or other buffer memory control informations.
Step S231:WAP gateway returns the network resource content that response message notice terminal asks and does not upgrade.
Step S232: will be at network address http: // 121.14.76.208:8080/qbar/online.gif connection request sends to the server that the Internet resources of being asked are provided
Step S233: server issues Internet resources to WAP gateway.
Server issues the network address http in the connection request: the Internet resources of // 61.135.154.43/info/disengag.gif correspondence are given the terminal of the request of transmission.
Carry the descriptor of Internet resources simultaneously, for example: issue time T hu, 17Apr 2008 08:31:56GMT, update time Tue, 08Jan 2008 10:06:30 GMT, valid expiration date Fri, 18 Apr 20080831:56GMT or the like.
The Internet resources that step S234:WAP gateway issues terminal are transmitted to the terminal of the request of transmission.
WAP gateway is the descriptor of transmission network resource simultaneously.
Among the foregoing description one and the embodiment two, judge whether carry the buffer memory identification information in the connection request and judge that terminal is the step of the Internet resources that request was first asked after this was reached the standard grade, can be in no particular order, when promptly in determining connection request, carrying buffer memory identification information and terminal and not being the Internet resources that request was first asked after this was reached the standard grade, connection request behind the WAP gateway transmission removal buffer memory identification information is to the server that Internet resources are provided, can realize reducing connection request and send number of times, thereby reduce the purpose of information interaction.
Among the foregoing description one and the embodiment two, when a plurality of users' terminal was initiated connection request to the Internet resources of a certain network address simultaneously, its effect that reduces network equipment load was more obvious.Especially gateway is directly notified terminal among the embodiment two when the Internet resources of judging terminal buffers are effective, further reduced and server between information interaction.
Preferable, among the foregoing description one and the embodiment two, in terminal rolls off the production line terminal and WAP gateway, all delete the network resource information of buffer memory, thus during effectively avoiding terminal not online cache information in the terminal destroyed after, the situation that the repetitive requests that is caused is obtained Internet resources takes place.
The foregoing description one and embodiment two also can be out of shape and change, for example: will judge that whether terminal is to initiate first after this is reached the standard grade the function of the connection request of certain Internet resources is put in the terminal, when not being when initiating first, directly the connection request of buffer memory identification information is not carried in transmission, when being then sends the connection request that carries the buffer memory identification information when initiating first to get final product.When not being to initiate first and response message that last request is returned when determining that its cache contents is effective, promptly can directly use like this; When the content of buffer memory is destroyed, then can directly goes to obtain, thereby make terminal also can avoid repeating to send connection request.
Above-mentioned network resource access control method according to the embodiment of the invention provides can make up a kind of network resource visit control system.As shown in Figure 6, comprising: terminal 10, gateway 20 are (for example: the WAP (wireless access protocol) WAP gateway) and the server 30 of Internet resources is provided.Wherein, gateway 20 can provide information interaction for a plurality of terminals 10 and a plurality of server 30.
Preferable, gateway 20, also be used for when determine terminal 10 be after this is reached the standard grade first access request first connection request ask Internet resources the time, first connection request that receives is sent to described server 30; And transmit described server judge that the Internet resources of described terminal buffers return when effective, characterize the response message that the network resource content of being asked do not upgrade and give terminal, or described server is judged that the Internet resources of being asked that the Internet resources of described terminal buffers issue when invalid are transmitted to described terminal.
Preferable, gateway 20 also is used to write down the related cache information of the Internet resources that terminal 10 asked; And when knowing that server 30 determines the Internet resources of 10 buffer memorys of terminal when invalid, the cache information of deletion record.
Optionally, gateway 20, also being used for when determining terminal 10 is when asking Internet resources that first connection request asks after this is reached the standard grade first, according to the descriptor of this Internet resources of first connection request that receives and local cache, judges whether the Internet resources of terminal 10 buffer memorys are effective; When the Internet resources of judging terminal 10 buffer memorys are effective, return the network resource content that response message notice terminal 10 asked to terminal 10 and do not upgrade; Otherwise, will receive first connection request and send to server 30; And the Internet resources that issue according to first connection request of reception server 30, and be transmitted to terminal 10.
Optionally, gateway 10, the update time and/or the valid expiration date of the descriptor of these Internet resources of the update time of the Internet resources that the terminal 10 that also is used for returning according to server 30 is asked and/or valid expiration date renewal local cache.
According to the above-mentioned network resource access control method that the embodiment of the invention one provides, can make up a kind of network resource accession control device, this device is arranged in the gateway of network resource visit control system.As shown in Figure 7, comprising: receiver module 201, first judge module 202, first Executive Module 203 and feedback module 204.
Receiver module 201 is used for first connection request that receiving terminal sends.
First judge module 202 is used for judging and receives first connection request and whether carry the buffer memory identification information, and judges whether this terminal is the Internet resources of being asked in first connection request that request received first after this was reached the standard grade.
First Executive Module 203, be used for judging first connection request and carry buffer memory identification information and terminal when not being the Internet resources of asking first after this is reached the standard grade to be asked in first connection request, send the server that the Internet resources that second connection request behind the buffer memory identification information asks to providing are provided when first judge module 201.
Feedback module 204 is used for the Internet resources that reception server issues according to second connection request of removing behind the buffer memory identification information, and is transmitted to terminal.
Preferable, above-mentioned network resource accession control device, also comprise: second Executive Module 205, being used for determining terminal when first judge module 202 is when asking Internet resources that first connection request asks after this is reached the standard grade first, first connection request that receives to be sent to the server that the Internet resources of being asked are provided.
Feedback module 204 is used for also server is judged that the response message that the Internet resources of terminal buffers return when effective is transmitted to terminal that the network resource content that the notice terminal is asked does not upgrade; Or server judged that the Internet resources of being asked that the Internet resources of terminal buffers issue when invalid are transmitted to terminal; Wherein server 30 judges according to the descriptor of first connection request and these Internet resources whether the Internet resources of terminal 10 buffer memorys are effective.
Above-mentioned network resource accession control device also comprises: logging modle 206 is used to write down the related cache information of the Internet resources that terminal asks; And when knowing that server determines the Internet resources of terminal institute buffer memory when invalid, the cache information of deletion record.
According to the above-mentioned network resource access control method that the embodiment of the invention two provides, can make up a kind of network resource accession control device, this device is arranged in the WAP gateway of network resource visit control system.As shown in Figure 8, comprising: receiver module 301, first judge module 302, first Executive Module 303 and feedback module 304.
Above-mentioned network resource accession control device, also comprise: second judge module 305, being used for determining terminal when first judge module 302 is when asking Internet resources that first connection request asks after this is reached the standard grade first, according to the descriptor of this Internet resources of first connection request that receives and local cache, judge whether the Internet resources of terminal buffers are effective.
Above-mentioned network resource accession control device, also comprise: update module 307 is used for the update time and/or the valid expiration date of the descriptor of these Internet resources that update time of the Internet resources of being asked that send according to server and/or valid expiration date upgrade local cache.
Above-mentioned network resource accession control device can also can concentrate on Fig. 7 and each module shown in Figure 8 in the same device simultaneously as above-mentioned Fig. 7 and shown in Figure 8, is arranged at jointly in the same gateway.Then whether this gateway Internet resources that both can select oneself to carry out terminal buffers are effectively judged, also can select to finish this arbitration functions by server.
The above-mentioned network resource access control method that the embodiment of the invention provides, system and device, by gateway judge terminal whether be reach the standard grade after the Internet resources of being asked of request first, when terminal is not the Internet resources of asking first to be asked, by gateway amended connection request is transmitted to server, server then can directly issue Internet resources, be to guarantee that terminal can be correct when inner buffer information is destroyed, get access to the Internet resources of being asked timely, avoided terminal frequently to send connection request, alleviate the load of the network equipment, saved Internet resources.
When the gateway Internet resources that request is first asked after to judge terminal be to reach the standard grade, connection request can be transmitted to server process, also can judge earlier according to the descriptor of this Internet resources of local cache, notice terminal when effective is transmitted to server process when invalid again when judging.Thereby make gateway needn't possess the Internet resources caching function, only write down the descriptor of each Internet resources, just can further reduce connection request server.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily, replace or be applied to other similar devices, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (14)
1. a network resource access control method is characterized in that, comprising:
First connection request that the gateway receiving terminal sends;
Carry buffer memory identification information and described terminal be not in judging described first connection request when asking Internet resources that described first connection request asks after this is reached the standard grade first, described gateway sends second connection request removed behind the described buffer memory identification information to the server that described Internet resources are provided; And
Receive the Internet resources that described server issues according to described second connection request, and be transmitted to described terminal.
2. the method for claim 1 is characterized in that, also comprises:
When determining described terminal is that gateway sends to described server with described first connection request when asking Internet resources that described first connection request asks after this is reached the standard grade first; And
With described server judge that the Internet resources of described terminal buffers return when effective, characterize the response message that the network resource content of being asked do not upgrade and be transmitted to terminal, or described server is judged that the Internet resources of being asked that the Internet resources of described terminal buffers issue when invalid are transmitted to described terminal; Wherein said server judges according to the descriptor of described first connection request and these Internet resources whether the Internet resources of described terminal buffers are effective.
3. method as claimed in claim 2 is characterized in that, gateway sends to described first connection request and also comprises before the described server: the related cache information that writes down the Internet resources that described terminal asks; And
Determine the Internet resources of described terminal institute buffer memory when invalid, the described cache information of described gateway deletion record when knowing described server.
4. as claim 2 or 3 described methods, it is characterized in that, described server is according to the update time and/or the valid expiration date of the Internet resources of being asked that carry in described first connection request, compare with update time and/or valid expiration date in the described descriptor, determine whether the Internet resources of described terminal buffers are effective.
5. the method for claim 1 is characterized in that, also comprises:
When determining described terminal is when asking the pairing Internet resources of described first connection request after this is reached the standard grade first, described gateway judges according to the descriptor of these Internet resources of buffer memory on described first connection request and the gateway whether the Internet resources of described terminal buffers are effective;
When the Internet resources of judging described terminal buffers are effective, return the network resource content that response message notifies described terminal to ask to described terminal and do not upgrade.
6. method as claimed in claim 5, it is characterized in that, described gateway is according to the update time and/or the valid expiration date of the Internet resources of being asked that carry in described first connection request, with update time in the described descriptor of local cache and/or valid expiration date relatively, determine whether the Internet resources of described terminal buffers effective.
7. as claim 5 or 6 described methods, it is characterized in that, also comprise:
Update time and/or valid expiration date in the descriptor of these Internet resources that the update time of the described Internet resources that described gateway sends according to described server and/or valid expiration date are upgraded local cache.
8. a network resource visit control system is characterized in that, comprising: terminal, gateway and the server of Internet resources is provided;
Described gateway is used to receive first connection request that described terminal sends; In judging described first connection request, carry buffer memory identification information and described terminal and be not when asking Internet resources that described first connection request asks after this is reached the standard grade first, send second connection request removed behind the described buffer memory identification information to the described server that described Internet resources are provided; And receive the Internet resources that described server issues according to described second connection request, and be transmitted to described terminal;
Described server is used for issuing Internet resources according to second connection request behind the described buffer memory identification information of removal and gives described terminal;
Described terminal is used to send Internet resources first connection request, and receives the Internet resources that described server issues.
9. system as claimed in claim 8 is characterized in that, described gateway, and also being used for when determining described terminal is when asking Internet resources that described first connection request asks after this is reached the standard grade first, described first connection request to be sent to described server; And transmit described server judge that the Internet resources of described terminal buffers return when effective, characterize the response message that the network resource content of being asked do not upgrade and give terminal, or described server is judged that the Internet resources of being asked that the Internet resources of described terminal buffers issue when invalid are transmitted to described terminal;
Described server also is used for the descriptor according to described first connection request and these Internet resources, judges whether the Internet resources of described terminal buffers are effective; If then return described response message and give described gateway; Otherwise, issue the Internet resources of being asked and give described gateway.
10. system as claimed in claim 8, it is characterized in that, described gateway, also be used for: when determining described terminal is when asking Internet resources that described first connection request asks after this is reached the standard grade first, according to the descriptor of this Internet resources of described first connection request and local cache, judge whether the Internet resources of described terminal buffers are effective;
When the Internet resources of judging described terminal buffers are effective, return the network resource content that response message notifies described terminal to ask to described terminal and do not upgrade; Otherwise, described first connection request is sent to described server; And receive the Internet resources that described server issues according to first connection request, and be transmitted to described terminal;
Described server also is used to receive and issues Internet resources behind the connection request of described gateway forwards and give described terminal.
11. a network resource accession control device is characterized in that, comprising:
Receiver module is used for first connection request that receiving terminal sends;
First judge module is used for judging whether described first connection request carries the buffer memory identification information, and judges that whether described terminal is to ask the Internet resources of being asked in described first connection request after this is reached the standard grade first;
First Executive Module, be used for judging described first connection request and carry buffer memory identification information and described terminal when not being the Internet resources of asking first after this is reached the standard grade to be asked in described first connection request, send second connection request removed behind the described buffer memory identification information to the described server that described Internet resources are provided when described first judge module;
Feedback module is used to receive the Internet resources that described server issues according to second connection request of removing behind the described buffer memory identification information, and is transmitted to described terminal.
12. device as claimed in claim 11 is characterized in that, also comprises:
Second Executive Module, being used for determining described terminal when described first judge module is when asking Internet resources that described first connection request asks after this is reached the standard grade first, described first connection request to be sent to described server;
Described feedback module is used for also described server is judged that the response message that the Internet resources of described terminal buffers return when effective is transmitted to terminal that the network resource content of notifying described terminal to ask does not upgrade; Or described server judged that the Internet resources of being asked that the Internet resources of described terminal buffers issue when invalid are transmitted to described terminal; Wherein said server judges according to the descriptor of described first connection request and these Internet resources whether the Internet resources of described terminal buffers are effective.
13. device as claimed in claim 12 is characterized in that, also comprises:
Logging modle is used to write down the related cache information of the Internet resources that described terminal asks; And when knowing that described server determines the Internet resources of described terminal institute buffer memory when invalid, the described cache information of deletion record.
14. device as claimed in claim 11 is characterized in that, also comprises:
Second judge module, be used for: determining described terminal when described first judge module is when asking Internet resources that described first connection request asks after this is reached the standard grade first, according to the descriptor of this Internet resources of described first connection request and local cache, judge whether the Internet resources of described terminal buffers are effective;
Second Executive Module is used for Internet resources that described second judge module judges described terminal buffers when effective, returns the network resource content that response message notifies described terminal to ask to described terminal and does not upgrade; Otherwise, described first connection request is sent to described server;
Described feedback module also is used to receive the Internet resources that connection request that described server sends according to described second Executive Module issues, and is transmitted to described terminal.
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