CN102196506B - Network resource access control method, system and device - Google Patents

Abstract

The present invention discloses a network resource access control method, system and device. The method includes: a gateway receiving a first connection request sent by a terminal; when it is judged that the first connection request carries cache identification information and the terminal is not When requesting the network resource requested by the first connection request for the first time after going online this time, the gateway sends a second connection request after removing the cache identification information to the server providing the network resource; and receives the request from the server The network resource issued by the second connection request is forwarded to the terminal. This prevents the terminal from frequently sending connection requests, reduces the load on network devices, and saves network resources.

Description

Network resource access control method, system and device

technical field

The invention relates to the field of network technology, in particular to a method, system and device for controlling network resource access between a terminal and a network server.

Background technique

In an existing network resource system, a terminal obtains network resources, that is, service content, by accessing a server of a network resource provider. The basic caching mechanism in network resource access is described in the HTTP1.1 protocol. Between the terminal and the server, a clear message header identification field is used to describe whether the two parties support the caching function.

FIG. 1 is a flow chart of a terminal requesting network resources from a server of a service provider in the prior art. in:

When a terminal accesses a certain network resource for the first time, it includes the following steps: (1) The terminal initiates a connection request; (2) The Wireless Access Protocol (WAP) gateway forwards the connection request to the server; (3) The server issues the network resource ; (4) The WAP gateway forwards network resources to the terminal. Among them, when the server delivers the network resources, it will carry the description information of the network resources, including the latest update time (LastModified), expiration date (Expires) and other cache control information (Cache Control).

When the terminal accesses a certain network resource multiple times, the process of each access includes the following steps: (11) The terminal initiates a connection request, and since it is not the first time to access, the connection request carries the cache identifier (IfModified Since) field; (12) ) The WAP gateway forwards the connection request to the server; (13) The server sends a response message to notify the terminal that the content has not been updated; (14) The WAP gateway forwards the response message to the terminal.

That is to say, in the prior art, the terminal identifies whether the terminal sending the request has a caching function through the identification field in the message header of the connection request, and the server can also identify whether the content requested this time is allowed to be cached. When it is allowed, the server will generally notify the terminal of the validity period of the content requested to be cached. When the validity period expires, the terminal will re-initiate the request in order to obtain new content. The terminal can carry relevant query conditions in the connection request to check whether the cached content has been updated. After the server finds that the content of this part has been updated, it will provide the updated content to the terminal, or when the server finds that the content of this part has not been updated, it will notify the terminal that it does not need to renew. The purpose of the caching mechanism is to achieve effective and timely updating of content information cached in the terminal with the least amount of information interaction.

The implementation of the above-mentioned network resource access, for a certain terminal, due to problems in the implementation of its cache mechanism (for example: the cache content has been destroyed, etc., or due to settings that cause repeated requests within the validity period, etc.), when it is necessary to re-acquire the requested The connection request will be resent when the connection request contains the cache identification field, so the server will think that the content of the requested network resource has been cached in the terminal, and will not resend the requested network resource content to the terminal. When the terminal cannot regain the network resources, it will frequently send connection requests for the same network resources. The WAP gateway will directly forward the connection request to the corresponding server that provides network resources each time. Since it is still within the validity period, the server will send the information that the content of the network resources has not changed to the terminal every time, for example: every time the code is sent 304 (Not Modified) to notify the terminal that the content of the network resource has not changed. Instead of sending the content of the requested network resource to the user terminal, the terminal cannot normally display this part of the content.

Due to the frequent sending of connection requests by the terminal within the validity period of the network resources, the server receives a large number of invalid requests, which puts a lot of business processing pressure on the network equipment.

Especially when multiple terminals with caching function request the same network resource, the WAP gateway will send the requests of each terminal to the server of the service provider one by one. When the above-mentioned terminal frequently sends requests, because the WAP gateway does not have a cache function, but directly forwards information, it may cause a large number of forwarding of network resource connection requests that are still within the validity period of the cache, resulting in a waste of network resources.

Contents of the invention

Embodiments of the present invention provide a network resource access control method, system and device, which are used to solve the problem in the prior art that terminals frequently send connection requests, which increases the load of network equipment and causes waste of network resources.

A network resource access control method, comprising:

The gateway receives the first connection request sent by the terminal;

When it is determined that the first connection request carries cache identification information and the terminal is not the first request for the network resource requested by the first connection request after going online this time, the gateway sends an the second connection request to the server providing the network resource; and

receiving the network resource sent by the server according to the second connection request, and forwarding it to the terminal.

A network resource access control system, including: a terminal, a gateway and a server providing network resources;

The gateway is configured to receive the first connection request sent by the terminal; when it is determined that the first connection request carries cache identification information and the terminal is not the first request for the first connection request after going online this time, When requesting a network resource, send a second connection request after removing the cache identification information to the server that provides the network resource; and receive the network resource issued by the server according to the second connection request, and forward to said terminal;

The server is configured to deliver network resources to the terminal according to the second connection request after removing the cache identification information;

The terminal is configured to send a first connection request for network resources, and receive network resources sent by the server.

A network resource access control device, comprising:

a receiving module, configured to receive the first connection request sent by the terminal;

A first judging module, configured to judge whether the first connection request carries cache identification information, and judge whether the terminal requests the network resource requested in the first connection request for the first time after going online this time;

The first execution module is configured to, when the first judging module judges that the first connection request carries cache identification information and the terminal is not the first request for the network resources requested in the first connection request after going online this time , sending a second connection request after removing the cache identification information to the server providing the network resource;

A feedback module, configured to receive the network resource sent by the server according to the second connection request after removing the cache identification information, and forward it to the terminal.

The network resource access control method, system and device provided by the embodiments of the present invention receive the first connection request sent by the terminal through the gateway; when it is judged that the first connection request carries cache identification information and the terminal is not going online this time When requesting the network resource requested by the first connection request for the first time afterward, the gateway sends a second connection request after removing the cache identification information to the server providing the network resource; and receiving the server according to the first connection request 2. Connect to the network resource issued by the request and forward it to the terminal. In this method, when the terminal is not accessing the requested network resource for the first time, the gateway forwards the modified connection request to the server, and the server can directly deliver the network resource, so that the terminal can correctly and timely obtain the requested network resource. This prevents the terminal from frequently sending connection requests, reduces the load on network devices, and saves network resources.

Description of drawings

Fig. 1 is the implementation flowchart of terminal accessing network resources in the prior art;

FIG. 2 is a flowchart of a network resource access control method in an embodiment of the present invention;

FIG. 3 is a flow chart of a network resource access control method in Embodiment 1 of the present invention;

FIG. 4 is a flow chart of processing between network elements in the network resource access control method in Embodiment 1 of the present invention;

FIG. 5 is a flow chart of a network resource access control method in Embodiment 2 of the present invention;

FIG. 6 is a flow chart of processing between network elements in the network resource access control method in Embodiment 2 of the present invention;

FIG. 7 is a schematic structural diagram of a network resource access control system in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a network resource access control device in an embodiment of the present invention;

FIG. 9 is another schematic structural diagram of a network resource access control device in an embodiment of the present invention.

Detailed ways

The embodiment of the present invention provides a network resource access control method, which controls the network resource access of the terminal through the gateway, so that when the terminal accesses the network resources provided by the service content provider (Service Provider, SP) on the Internet, it can accurately obtain the The required network resources, and effectively avoid repeated access to obtain.

In the network resource access control method provided by the embodiment of the present invention, its flow is shown in Figure 2, including the following steps:

Step S11: the gateway receives the connection request (first connection request) sent by the terminal.

Preferably, the above gateway is a WAP gateway, and of course it can also be other gateways.

Step S12: The gateway judges whether the received connection request carries a cache identifier.

When the connection request carries a cache identifier, step S14 is performed. When not carried, execute step S13.

Step S13: Process the connection request according to the normal process of not caching network resources.

Step S14: Determine whether the terminal requests the network resource requested in the above connection request for the first time after going online this time.

When it is determined that it is not the first time that the terminal accesses the requested network resource after going online this time, step S15 is executed; otherwise, step S17 is executed.

Step S15: The gateway sends a connection request (second connection request) after removing the cache identification information to the server providing network resources.

Step S16: the server delivers network resources to the terminal through the gateway.

The server sends network resources to the terminal according to the connection request after removing the cache identification information. Therefore, the terminal can obtain the required network resources in time, and avoid frequent sending of connection requests.

Preferably, the above method also includes:

Step S17: The gateway sends information to the terminal according to the obtained judgment result of judging whether the network resource cached by the terminal is valid, including: sending a response message indicating that the content of the requested network resource has not been updated or an updated message issued by the forwarding server Network resources are given to the terminal.

When it is determined that the terminal is accessing the requested network resource for the first time after going online this time, the gateway will send the obtained judgment result to the terminal to determine whether the network resource cached by the terminal is valid, and when it is determined that the network resource cached by the terminal is invalid Send the updated network resource delivered by the server to the terminal.

The gateway sends the acquired determination result of whether the network resource cached by the terminal is valid to the terminal, and sends the updated network resource issued by the server to the terminal when it is determined invalid. Two situations are included, one is that the gateway determines whether the network resource cached by the terminal is valid, and the other is that the server determines whether the network resource cached by the terminal is valid. In the following, two specific embodiments are used to illustrate (the gateways in the following embodiments are all described by taking a WAP gateway as an example).

Embodiment one:

In the network resource access control method provided by the embodiment of the present invention, when a terminal accesses a network resource, if the WAP gateway determines that the terminal is requesting the requested network resource for the first time after going online this time, the connection request is forwarded to the server, and the server determines the network cached by the terminal. Whether the resource is valid. The flow of the method is shown in Figure 3, and the execution steps are as follows:

Step S101: the terminal sends a connection request to the WAP gateway.

When a terminal needs to access a network resource, it will send a connection request, and the connection request generally indicates the address information of the network resource to be accessed. Generally, address information of network resources can be identified by a Uniform/Universal Resource Locator (Uniform/UniversalResource Locator, URL; or web page address).

Step S102: the WAP gateway receives the connection request sent by the terminal.

Step S103: Determine whether the received connection request carries cache identification information.

After receiving the connection request, the WAP terminal parses it to determine whether it carries cache identification information, for example: If-Modified-Since field, when there is this field, it is considered that the cache identification information is carried, otherwise it is considered that the cache identification information is not carried .

If yes, execute step S105; otherwise, execute step S104.

Step S104: Process the connection request according to the normal process of not caching network resources, and send the network resources to the terminal by the server.

That is, if the cache identifier is not carried, the terminal does not have the caching capability or the network resource is not allowed to be cached, then it will be processed according to the normal process without caching, and the WAP gateway will forward the connection request to the server that provides the network resource, and the server will pass the WAP The gateway delivers network resources to the terminal.

Step S105: Determine whether the terminal requests the network resource requested in the connection request received for the first time after going online this time.

Generally, according to the address information of the requested network resource included in the connection request, such as URL, the WAP gateway judges whether the terminal accesses the network address for the first time after going online this time, and determines whether the terminal accesses the network resource corresponding to the network address for the first time.

If yes, execute step S108; otherwise, execute step S106.

Step S106: the WAP gateway sends the connection request to the corresponding server with the cache identification information removed.

That is, when the WAP gateway determines that the terminal is not the first request for the requested network resource after going online this time, it removes the cache identification information in the received connection request, for example: removes the If-Modifled-Since field in the connection request. After re-encapsulation, send the connection request with the cache identification information removed to the server providing the network resources. In this way, the server can smoothly deliver network resources to the terminal after receiving the connection request, ensuring that the terminal can obtain correct content information of network resources, and reducing unnecessary repeated requests in the future.

At the same time, the WAP gateway records the network resource involved in the connection request and the identifier of the terminal accessing the network resource, indicating that the terminal has requested the network resource involved in the connection request.

Step S107: the server sends network resources to the terminal.

The server sends the network resource to the terminal requesting the network resource according to the connection request after removing the cache identification information.

Step S108: the WAP gateway directly sends the connection request to the server providing the requested network resources.

Before the WAP gateway receives the connection request and sends it to the server providing the network resource, it records the cache information of the network resource requested by the terminal.

Step S109: the server judges whether the network resource cached by the terminal is valid.

If yes, execute step S110; otherwise, execute step S111.

The server judges whether the network resource cached by the terminal is valid according to the received connection request and the description information of the network resource. Wherein, the description information may include the update time, validity period and other cache control information of the network resource.

The server compares the update time and/or expiration date of the requested network resources carried in the received connection request with the update time and/or expiration date in the description information to determine whether the network resources cached by the terminal are valid. When the update time and/or validity period in the connection request and the description information correspond to the same, it is confirmed that the network resource cached by the terminal is valid; otherwise, it is invalid.

Step S110: The server returns a response message to notify the terminal that the content of the requested network resource has not been updated.

The server returns a response message to the terminal sending the connection request through the WAP gateway, and the status code carried in the response message is used to identify that the network resource requested by the terminal is valid and has not been modified or updated.

Step S111: the server delivers the requested network resource to the terminal.

When the server judges that the network resource cached by the terminal is invalid, it will send the updated network resource to the terminal sending the request; at the same time, the WAP gateway deletes the cached information recorded in step S108.

A specific implementation example of the above network resource access control method provided by Embodiment 1 of the present invention is shown in FIG. 4 . Taking access to a network resource whose network address (ie URL) is http://61.135.154.43/info/disengag.gif as an example, it specifically includes the following steps:

Step S121: The terminal initiates a connection request for the network address http://61.135.154.43/info/disengag.gif.

The connection request carries cache identification information, that is, the If-Modified-Since field, which contains description information: Tue, 04Sep 2007 02:01:22 GMT.

Step S122: the WAP gateway determines whether the received connection request carries cache identification information.

That is, according to the If-Modifled-Since field in the connection request, it is judged whether the terminal caches the network resource corresponding to the network address.

If so, execute step S126; otherwise, execute step S123, that is, process according to the normal process when the network resource is not cached.

Step S123: Forward the connection request to the server providing the network resource.

Step S124: the server delivers network resources to the WAP gateway.

The server sends the network resource corresponding to the network address http://61.135.154.43/info/disengag.gif in the connection request to the terminal sending the request.

Step S125: the WAP gateway forwards the network resource issued by the server to the terminal sending the request.

Step S126: Determine whether the terminal accesses the requested network address for the first time after going online this time.

If yes, execute step S130; otherwise, execute step S127.

Step S127: the WAP gateway sends the connection request to the server with the cache identification information removed.

That is, the WAP gateway removes the If-Modified-Since field in the received connection request, and sends the connection request to the server providing network resources. At the same time, the WAP gateway records the network address involved in the connection request and the identifier of the terminal accessing the network address, indicating that the terminal has requested the network address involved in the connection request.

Preferably, the WAP gateway may not remove the If-Modifled-Since field, but modifies other fields to indicate that the information cached by the terminal is invalid, and the server needs to re-send the network resource corresponding to the network address.

Step S128: the server delivers network resources to the WAP gateway.

The server sends the network resource corresponding to the network address http://61.135.154.43/info/disengag.gif in the connection request to the terminal sending the request.

At the same time, it carries the description information of network resources, such as: release time Thu, 17Apr 2008 08:28:11GMT, update time Thu, 17 Apr 2008 06:00:00 GMT, expiration date Thu, 17 Apr 2008 10:00:00 GMT, etc. wait.

Step S129: the WAP gateway forwards the network resources delivered by the terminal to the terminal sending the request.

The WAP gateway will forward the description information of the network resources at the same time.

Step S130: the WAP gateway directly sends the connection request to the server providing the requested network resources.

Step S131: the server judges whether the network resource cached by the terminal is valid.

If yes, execute step S132; otherwise, execute step S134.

The server compares the validity period Tue, 04Sep 2007 02:01:22 GMT received in the connection request with the validity period in the description information of the network resource set locally to determine whether the network resource cached by the terminal is valid. Of course, it can also be judged according to the update time or other cache control information.

Step S132: the server returns a response message to the WAP gateway.

Step S133: The WAP gateway forwards the response message to notify the terminal that the content of the requested network resource has not been updated.

The forwarded response message carries a field of not Modified (for example: 304), indicating that the network resource requested by the terminal has not been updated.

When the validity period is updated, it can be carried at the same time so as to inform the terminal of the new validity period of the network resource.

Step S134: the server delivers network resources to the WAP gateway.

The server sends the network resource corresponding to the network address http://61.135.154.43/info/disengag.gif in the connection request to the terminal sending the request.

At the same time, it carries the description information of network resources, such as: release time Thu, 17Apr 2008 08:28:11GMT, update time Thu, 17Apr 2008 06:00:00 GMT, expiration date Thu, 17 Apr 2008 10:00:00 GMT, etc. .

Step 135: The WAP gateway forwards the network resources issued by the terminal to the terminal sending the request.

The WAP gateway will forward the description information of the network resources at the same time.

Embodiment two

In the network resource access control method provided by the embodiment of the present invention, when a terminal accesses a network resource, if the WAP gateway determines that the terminal is requesting the requested network resource for the first time after going online this time, it further judges whether the information cached by the terminal is valid, and executes according to the judgment result. next steps. The process flow of this method is shown in Figure 4, and the execution steps are as follows:

Steps S201-S207 are the same as steps S101-S107 in the first embodiment above, and will not be repeated here.

When the determination in step S205 is yes, execute step S208.

Step S208: the WAP gateway judges whether the network resource cached by the terminal is valid. If yes, execute step S209; otherwise, execute step S210.

The WAP gateway judges whether the network resource cached by the terminal is valid according to the received connection request and the description information of the network resource cached locally. Wherein, the description information may include the update time, validity period and other cache control information of the network resource.

Specifically, the WAP gateway compares the update time and/or expiration date of the requested network resource carried in the received connection request with the update time and/or expiration date in the description information; and determines whether the network resource cached by the terminal is valid. When the update time and/or validity period in the connection request and the description information correspond to the same, it is confirmed that the network resource cached by the terminal is valid; otherwise, it is invalid.

The WAP gateway pre-stores the description information of each network resource in each server that provides network resources. When the validity period of a certain network resource expires, the terminal will re-request the description information from the corresponding server in order to update the description of the network resource. information. The WAP gateway updates the update time and/or validity period in the locally cached description information of the network resource according to the update time and/or validity period of the requested network resource returned by the server. When the server does not respond successfully and sends the description information, delete the description information of the network resource.

The WAP gateway can create a table to store the description information of each network resource. Taking the validity period included in the stored description information as an example, the established table can be shown in Table 1.

Table 1

website address Validity period http://219.133.40.48/images/face/online/1-1.gif Fri, 18 Apr 2008 08:27:20 GMT http://121.14.76.208:8080/qbar/sysmsg.gif Fri, 18 Apr 2008 08:28:02 GMT ... ...

Step S209: The WAP gateway returns a response message to notify the terminal that the requested network resource content has not been updated.

The WAP gateway returns a response message to the terminal sending the connection request, and the status code carried in the response message is used to identify that the network resource requested by the terminal is valid and has not been modified or updated.

Step S210: Send the connection request to the server providing the requested network resource.

At this time, the WAP gateway may directly forward the connection request to the server providing the requested network resources, or may remove the cache identification information and then send the modified connection request to the server.

Step S211: the server delivers the requested network resource to the terminal.

In fact, when the WAP gateway judges that the network resources cached by the terminal are invalid, the server also judges that the network resources cached by the terminal are invalid according to the received connection request, or the WAP network management directly notifies the server of the judgment result. The server will deliver the updated network resource to the terminal sending the request.

A specific implementation example of the above network resource access control method provided by Embodiment 2 of the present invention is shown in FIG. 5 . Take access to the network address http://121.14.76.208:8080/qbar/online.gif as an example, including the following steps:

Step S221: The terminal initiates a connection request for the network address http://121.14.76.208:8080/qbar/online.gif.

The connection request carries cache identification information, that is, the If-Modified-Since field, which contains description information: Tue, 08 Jan 2008 10:06:30 GMT.

Step S222: The WAP gateway determines whether the received connection request carries cache identification information.

That is, according to the If-Modified-Since field in the connection request, it is judged whether the terminal caches the network resource corresponding to the network address.

If so, execute step S226; otherwise, execute step S223, that is, process according to the normal process when the network resources are not cached.

Step S223: Forward the connection request to the server providing the network resource.

Step S224: the server delivers network resources to the WAP gateway.

The server sends the network resource corresponding to the network address http://121.14.76.208:8080/qbar/online.gif in the connection request to the terminal sending the request.

Step S225: The WAP gateway forwards the network resources issued by the server to the terminal sending the request.

Step S226: Determine whether the terminal accesses the requested network address for the first time after going online this time.

If yes, execute step S230; otherwise, execute step S227.

Step S227: the WAP gateway sends the connection request to the server with the cache identification information removed.

That is, the WAP gateway removes the If-Modified-Since field in the received connection request, and sends the connection request to the server providing network resources. At the same time, the WAP gateway records the network address involved in the connection request and the identifier of the terminal accessing the network address, indicating that the terminal has requested the network address involved in the connection request.

Preferably, the WAP gateway also does not delete the If-Modified-Since field, but modifies other fields to indicate that the information cached by the terminal is invalid, and the server needs to re-send the network resource corresponding to the network address.

Step S228: the server delivers network resources to the WAP gateway.

The server sends the network resource corresponding to the network address http://121.14.76.208:8080/qbar/online.gif in the connection request to the terminal sending the request.

At the same time, it carries the description information of network resources, such as: release time Thu, 17Apr 2008 08:31:56GMT, update time Tue, 08 Jan 2008 10:06:30 GMT, expiration date Fri, 18 Apr 20080831:56 GMT, etc.

Step S229: the WAP gateway forwards the network resources issued by the terminal to the terminal sending the request.

The WAP gateway will forward the description information of the network resources at the same time.

Step S230: the WAP gateway judges whether the network resource cached by the terminal is valid.

If yes, execute step S231; otherwise, execute step S232.

The WAP gateway compares the valid period Tue, 08Jan 2008 10:06:30 GMT received in the connection request with the valid period in the description information of the network resource set locally to determine whether the network resource cached by the terminal is valid. Of course, it can also be judged according to the update time or other cache control information.

Step S231: The WAP gateway returns a response message to notify the terminal that the content of the requested network resource has not been updated.

Step S232: Send the connection request for the network address http://121.14.76.208:8080/qbar/online.gif to the server providing the requested network resource

Step S233: the server delivers network resources to the WAP gateway.

The server sends the network resource corresponding to the network address http://61.135.154.43/info/disengag.gif in the connection request to the terminal sending the request.

At the same time, it carries the description information of network resources, such as: release time Thu, 17Apr 2008 08:31:56GMT, update time Tue, 08Jan 2008 10:06:30 GMT, expiration date Fri, 18 Apr 20080831:56GMT, etc.

Step S234: the WAP gateway forwards the network resources issued by the terminal to the terminal sending the request.

The WAP gateway will forward the description information of the network resources at the same time.

In the first and second embodiments above, the steps of judging whether the connection request carries cache identification information and judging whether the terminal is the first request for the requested network resource after going online this time can be performed in no particular order, that is, when it is determined that the connection request contains When carrying cache identification information and the terminal is not the first request for the requested network resources after going online this time, the WAP gateway sends a connection request after removing the cache identification information to the server providing network resources, which can reduce the number of connection request transmissions, thereby reducing information purpose of the interaction.

In the first and second embodiments above, when multiple user terminals initiate connection requests to network resources at a certain network address at the same time, the effect of reducing the load on the network equipment is more obvious. Especially in the second embodiment, when the gateway determines that the network resource cached by the terminal is valid, it directly notifies the terminal, which further reduces information interaction with the server.

Preferably, in the first and second embodiments above, when the terminal goes offline, both the terminal and the WAP gateway delete the cached network resource information, thereby effectively preventing the cached information in the terminal from being destroyed when the terminal is not online. Repeated requests for network resources occur.

The first and second embodiments above can also be modified and modified. For example, the function of judging whether the terminal is the first to initiate a connection request to a certain network resource after going online this time is placed in the terminal. Send a connection request without cache identification information, and send a connection request with cache identification information when it is initiated for the first time. In this way, when it is not initiated for the first time and the response message returned by the last request confirms that the cached content is valid, it can be used directly; when the cached content is destroyed, it can be obtained directly, so that the terminal can also avoid sending connection requests repeatedly.

According to the above network resource access control method provided by the embodiments of the present invention, a network resource access control system can be constructed. As shown in FIG. 6 , it includes: a terminal 10 , a gateway 20 (such as a WAP gateway) and a server 30 providing network resources. Wherein, one gateway 20 can provide information exchange for multiple terminals 10 and multiple servers 30 .

The terminal 10 is configured to send a first connection request for a network resource, and receive a network resource issued by the server 30 .

The gateway 20 is configured to receive the first connection request sent by the terminal 10; when it is determined that the first connection request carries cache identification information and the terminal 10 is not the first request for the network resource requested by the first connection request after going online this time , sending the second connection request after removing the cache identification information to the server 30 providing the requested network resource;

The server 30 is configured to send network resources to the terminal 10 according to the second connection request after removing the cache identification information.

Preferably, the gateway 20 is further configured to send the received first connection request to the server 30 when it is determined that the terminal 10 is accessing the network resource requested by the first connection request for the first time after going online this time; and Forwarding the response message returned by the server when judging that the network resource cached by the terminal is valid and indicating that the content of the requested network resource has not been updated to the terminal, or sending the response message sent by the server when judging that the network resource cached by the terminal is invalid The requested network resource is forwarded to the terminal.

The server 30 is further configured to judge whether the network resource cached by the terminal 10 is valid according to the received first connection request and the description information of the network resource; if so, return a response message to the gateway 20 so as to notify the terminal 10 of the requested network resource The content is not updated; otherwise, send the requested network resource to the gateway 20 .

Preferably, the gateway 20 is also used to record the relevant cache information of the network resource requested by the terminal 10; and delete the recorded cache information when the server 30 determines that the cached network resource of the terminal 10 is invalid.

Optionally, the gateway 20 is also configured to, when it is determined that the terminal 10 requests the network resource requested by the first connection request for the first time after going online this time, according to the received first connection request and the description of the network resource cached locally information, to determine whether the network resources cached by the terminal 10 are valid; when it is determined that the network resources cached by the terminal 10 are valid, return a response message to the terminal 10 to notify the terminal 10 that the content of the network resources requested by the terminal 10 has not been updated; otherwise, the first connection request will be received sending to the server 30 ; and receiving the network resource sent by the server 30 according to the first connection request, and forwarding it to the terminal 10 .

The server 30 is further configured to deliver network resources to the terminal 10 after receiving the connection request forwarded by the gateway 20 .

Optionally, the gateway 10 is further configured to update the update time and/or the validity period in the locally cached description information of the network resource according to the update time and/or the validity period of the network resource requested by the terminal 10 returned by the server 30 .

According to the above-mentioned network resource access control method provided in Embodiment 1 of the present invention, a network resource access control device can be constructed, and the device is set in a gateway of a network resource access control system. As shown in FIG. 7 , it includes: a receiving module 201 , a first judgment module 202 , a first execution module 203 and a feedback module 204 .

The receiving module 201 is configured to receive a first connection request sent by a terminal.

The first judging module 202 is configured to judge whether the received first connection request carries cache identification information, and judge whether the terminal requests the network resources requested in the first connection request received for the first time after going online this time.

The first execution module 203 is configured to send the cache removal identifier when the first judging module 201 judges that the cache identification information is carried in the first connection request and the terminal is not the first request for the network resources requested in the first connection request after going online this time The second connection request following the information is to the server providing the requested network resource.

The feedback module 204 is configured to receive the network resource delivered by the server according to the second connection request after removing the cache identification information, and forward it to the terminal.

Preferably, the above-mentioned network resource access control device further includes: a second execution module 205, configured to: when the first judging module 202 determines that the terminal requests the network resource requested in the first connection request for the first time after going online this time, The received first connection request is sent to a server providing the requested network resource.

The feedback module 204 is further configured to forward the response message returned by the server to the terminal when the server judges that the network resource cached by the terminal is valid, and notify the terminal that the content of the requested network resource has not been updated; The requested network resource is forwarded to the terminal; wherein the server 30 judges whether the network resource cached by the terminal 10 is valid according to the first connection request and the description information of the network resource.

The above-mentioned network resource access control device further includes: a recording module 206 configured to record relevant cache information of the network resource requested by the terminal; and delete the recorded cache information when the server determines that the network resource cached by the terminal is invalid.

According to the above-mentioned network resource access control method provided in Embodiment 2 of the present invention, a network resource access control device can be constructed, and the device is set in a WAP gateway of a network resource access control system. As shown in FIG. 8 , it includes: a receiving module 301 , a first judgment module 302 , a first execution module 303 and a feedback module 304 .

The receiving module 301 is configured to receive a first connection request sent by a terminal.

The first judging module 302 is configured to judge whether the received first connection request carries cache identification information, and judge whether the terminal is requested in the first connection request received in the first request for the first connection request after going online this time Internet resources.

The first execution module 303 is configured to send the cache removal identifier when the first judging module 301 judges that the cache identification information is carried in the first connection request and the terminal is not the first request for the network resources requested in the first connection request after going online this time The second connection request following the information is to the server providing the requested network resource.

The feedback module 304 is configured to receive the network resource sent by the server according to the second connection request after removing the cache identification information, and forward it to the terminal.

The above-mentioned network resource access control device further includes: a second judging module 305, configured to, when the first judging module 302 determines that the terminal requests the network resources requested in the first connection request for the first time after going online this time, according to the received The first connection request and the locally cached description information of the network resource determine whether the network resource cached by the terminal is valid.

The second execution module 306 is used for when the second judging module 305 judges that the network resource cached by the terminal 10 is valid, return a response message to the terminal to notify the terminal that the content of the network resource requested by the terminal has not been updated; otherwise, the received first connection request Sent to the server providing the requested web resource.

The feedback module 304 is further configured to receive the network resource sent by the server according to the connection request sent by the second execution module 306, and forward it to the terminal.

The above-mentioned network resource access control device further includes: an update module 307, configured to update the update time and/or expiration date in the description information of the network resource cached locally according to the update time and/or validity period of the requested network resource sent by the server Validity period.

The above-mentioned network resource access control device may be as shown in FIG. 7 and FIG. 8 above, or the various modules shown in FIG. 7 and FIG. 8 may be integrated in the same device and jointly installed in the same gateway. Then the gateway can either choose to perform the judgment on whether the network resource cached by the terminal is valid by itself, or choose to let the server complete the judgment function.

In the above-mentioned network resource access control method, system and device provided by the embodiments of the present invention, the gateway judges whether the terminal requests the requested network resource for the first time after going online, and when the terminal does not request the requested network resource for the first time, the modified The connection request is forwarded to the server, and the server can directly issue network resources, which ensures that the terminal can correctly and timely obtain the requested network resources when the internal cache information is destroyed, avoiding the frequent sending of connection requests by the terminal and reducing the network resources. equipment load, saving network resources.

When the gateway judges that the terminal is requesting the requested network resource for the first time after going online, it can forward the connection request to the server for processing, or make a judgment based on the description information of the network resource cached locally, and notify the terminal when it is valid. If it is invalid, it will be forwarded to the server for processing. Therefore, the gateway does not need to have a network resource caching function, and only records the description information of each network resource, which can further reduce connection requests to the server.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any skilled person in the technical field can easily think of changes, Replacement or application to other similar devices shall fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (14)

1. a network resource access control method, is characterized in that, comprising:

The first connection request that the gateway receiving terminal sends;

Carry buffer memory identification information and described terminal be not in judging described the first connection request while asking first Internet resources that described the first connection request asks after this is reached the standard grade, described gateway sends the second connection request of removing after 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 the 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, be that while asking first Internet resources that described the first connection request asks after this is reached the standard grade, gateway sends to described server by described the first connection request; And

By described server judge that the Internet resources of described terminal buffers return when effective, characterize the response message that the network resource content of asking do not upgrade and be transmitted to terminal, or described server is judged to the Internet resources of asking that the Internet resources of described terminal buffers issue when invalid are transmitted to described terminal; Wherein said server, according to the descriptor of described the first connection request and these Internet resources, judges that 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 the first connection request before described server and also comprises: the related cache information that records 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. method as claimed in claim 2 or claim 3, it is characterized in that, described server is according to update time and/or the valid expiration date of the Internet resources of asking that carry in described the first connection request, compare with update time and/or valid expiration date in described descriptor, determine that 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, be while asking first the corresponding Internet resources of described the first connection request after this is reached the standard grade, described gateway, according to the descriptor of these Internet resources of buffer memory on described the first connection request and gateway, judges that whether the Internet resources of described terminal buffers are effective;

When the Internet resources of the described terminal buffers of judgement when effective, return to described terminal the network resource content that response message notifies described terminal to ask and do not upgrade.

6. method as claimed in claim 5, it is characterized in that, described gateway is according to update time and/or the valid expiration date of the Internet resources of asking that carry in described the first connection request, with update time in the described descriptor of local cache and/or valid expiration date relatively, determine that whether the Internet resources of described terminal buffers effective.

7. method as described as claim 5 or 6, is characterized in that, also comprises:

Update time and/or valid expiration date in the descriptor of these Internet resources of the update time of the described Internet resources that described gateway sends according to described server and/or valid expiration date renewal 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, the first connection request sent for receiving described terminal; Carry buffer memory identification information and described terminal be not in judging described the first connection request while asking first Internet resources that described the first connection request asks after this is reached the standard grade, send the second connection request of removing after 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 the second connection request, and be transmitted to described terminal;

Described server, issue Internet resources to described terminal for the second connection request according to after the described buffer memory identification information of removal;

Described terminal, for sending Internet resources the first connection request, and receive the Internet resources that described server issues.

9. system as claimed in claim 8, is characterized in that, described gateway, also for being, while asking first Internet resources that described the first connection request asks after this is reached the standard grade, described the first connection request to be sent to described server when determining described terminal; And forward described server judge that the Internet resources of described terminal buffers return when effective, characterize response message that the network resource content of asking do not upgrade to terminal, or described server is judged to the Internet resources of asking that the Internet resources of described terminal buffers issue when invalid are transmitted to described terminal;

Described server, also, for the descriptor according to described the first connection request and these Internet resources, judge that whether the Internet resources of described terminal buffers are effective; If return to described response message to described gateway; Otherwise, issue asked Internet resources to described gateway.

10. system as claimed in claim 8, it is characterized in that, described gateway, also for: when determining described terminal, be while asking first Internet resources that described the first connection request asks after this is reached the standard grade, descriptor according to this Internet resources of described the first connection request and local cache, judge that whether the Internet resources of described terminal buffers are effective;

When the Internet resources of the described terminal buffers of judgement when effective, return to described terminal the network resource content that response message notifies described terminal to ask and do not upgrade; Otherwise, described the first connection request is sent to described server; And receive the Internet resources that described server issues according to the first connection request, and be transmitted to described terminal;

Described server, also for issuing Internet resources to described terminal after the connection request that receives described gateway forwards.

11. a network resource accession control device, is characterized in that, comprising:

Receiver module, the first connection request sent for receiving terminal;

Whether the first judge module, carry the buffer memory identification information for judging described the first connection request, and judge whether described terminal is to ask first the Internet resources of asking in described the first connection request after this is reached the standard grade;

The first Executive Module, carry buffer memory identification information and described terminal while not being the Internet resources of asking first after this is reached the standard grade to ask in described the first connection request for judge described the first connection request when described the first judge module, send the second connection request after the described buffer memory identification information of removal to the server that described Internet resources are provided;

Feedback module, the Internet resources that issue according to the second connection request after the described buffer memory identification information of removal for receiving described server, and be transmitted to described terminal.

12. device as claimed in claim 11, is characterized in that, also comprises:

The second Executive Module is, while asking first Internet resources that described the first connection request asks after this is reached the standard grade, described the first connection request to be sent to described server for determine described terminal when described the first judge module;

Described feedback module, the response message returned when also effective for the Internet resources that described server judged to described terminal buffers is transmitted to terminal, and the network resource content of notifying described terminal to ask does not upgrade; Or described server is judged to the Internet resources of asking that the Internet resources of described terminal buffers issue when invalid are transmitted to described terminal; Wherein said server, according to the descriptor of described the first connection request and these Internet resources, judges that 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, for recording 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:

The second judge module, be used for: determining described terminal when described the first judge module is while asking first Internet resources that described the first connection request asks after this is reached the standard grade, descriptor according to this Internet resources of described the first connection request and local cache, judge that whether the Internet resources of described terminal buffers are effective;

The second Executive Module, when the Internet resources of judging described terminal buffers for described the second judge module are effective, return to described terminal the network resource content that response message notifies described terminal to ask and do not upgrade; Otherwise, described the first connection request is sent to described server;

Described feedback module, the Internet resources that also issue for receiving connection request that described server sends according to described the second Executive Module, be transmitted to described terminal.

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