WO2017049908A1

WO2017049908A1 - Method and device for redirection

Info

Publication number: WO2017049908A1
Application number: PCT/CN2016/081431
Authority: WO
Inventors: 卢仲君
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-09-23
Filing date: 2016-05-09
Publication date: 2017-03-30
Also published as: CN106550001A; CN106550001B

Abstract

A method and a device for redirection. The method comprises the following steps: a media gateway intercepting an HTTP data stream interacted between a client and a server (step 201); the media gateway detecting whether the HTTP data stream intercepted supports redirection (step 202); the media gateway performing redirection operations according to a predetermined strategy and the detection result of whether the HTTP data stream supports redirection (step 203).

Description

Method and device for redirection

Technical field

The present application relates to, but is not limited to, the Hyper-Text Transfer Protocol (HTTP) in the Internet Protocol (IP) or the Transmission Control Protocol (TCP) network. Redirection technology area.

Background technique

The HTTP protocol, request for comment 2616 (Request For Comments 2616, referred to as: RFC2616) hypertext transfer protocol, is the mainstream protocol for accessing network resources on a TCP/IP network. The HTTP protocol uses the request/response method, which corresponds to the client and the server. The client obtains the data content through the protocol, and the server provides the data content. The server indicates the result of the current request by the client by using the response code, where the redirection code indicates that the current resource needs to be obtained by using another Uniform Resource Locator (URL), and the default client receives the indication. A connection is initiated to the new URL and the data content is requested.

In the field of mobile Internet, the HTTP protocol is the mainstream way for mobile terminals to access the network, and is the default protocol used by web browsers. Network operators (ie, server) often use HTTP redirection to push reminders (such as user traffic status, specific service migration, recharge, friendship reminders, advertisements, etc.) to users (ie, clients), which are generally deployed in depth. Media gateway for packet detection (Deep Packet Inspection, DPI for short). However, with the development of the network, more and more small applications (Application, referred to as: APP) also use the HTTP protocol. This type of non-browser-based HTTP access does not respond to redirects, and some HTTP download services are in service. When the device returns to the redirect, it will also be treated as a failure. At this time, the active use of the redirection technology to push the reminder information will cause the user to fail the service and the user experience is not good.

In the mobile internet, the client (corresponding to the user terminal entity) uses the network service through the network channel, and the data content is forwarded to the network server by the media gateway, and the media gateway can intercept any data packet exchanged between the client and the server. The configuration entity is a configuration source that applies the policy configuration to the media gateway. Generally, the configuration entity can be a policy and charging rule function (Policy and Charging Rules Function (referred to as: PCRF) network element entity, of course, can also be a local configuration source. FIG. 1 is a schematic structural diagram of a redirection device provided by the related art. In the related art, the active redirection push process may be: the client accesses the content of the server A, and the data packet arrives at the media gateway, and the media The gateway detects the HTTP stream, and according to the configured policy, the URL of the server B is redirected to the client, and the client then initiates access to the server B (which carries the original address of the server A), that is, the gateway successfully The content of the server B is pushed to the client; as an optional step, the URL address provided by the server B can also be switched back to the server A. In the above application scenario, if the client is a non-web browser such as an application APP, it may not respond to the redirect code returned by the media gateway. At this time, the client cannot continue to access the content on the server B, so that the client accesses the network. Will fail.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The present invention provides a method and a device for redirection, which solves the problem that the media gateway actively uses the HTTP redirection technology to push the reminder information to the user in the related art, which may cause the user to access the service to a certain extent.

A method of redirecting, including the following steps:

The media gateway intercepts the HTTP data stream exchanged between the client and the server;

The media gateway detects whether the intercepted HTTP data stream supports redirection;

The media gateway performs a redirection operation according to whether the HTTP data stream supports the detection result of the redirection and the predetermined policy.

Optionally, the media gateway detects whether the intercepted HTTP data stream supports redirection, including:

The media gateway detects whether the feature of the HTTP data stream matches a preset feature database;

When the media gateway detects that the feature of the HTTP data stream matches the preset feature database, the HTTP data stream is used as a first detection result that supports redirection.

Optionally, the media gateway detects whether the intercepted HTTP data stream supports redirection, and further includes:

When the media gateway detects that the feature of the HTTP data stream does not match the preset feature database, the HTTP data stream is used as a second detection result that supports redirection.

Optionally, the media gateway performs a redirection operation according to whether the HTTP data stream supports the detection result of the redirection and the predetermined policy, including:

The media gateway performs the redirection operation according to the HTTP data stream as the first detection result or the second detection result that supports redirection, and the redirection service that needs to be supported in the predetermined policy.

Optionally, after the media gateway performs the redirection operation according to the second detection result of the HTTP data flow as the redirection, the method further includes:

The media gateway verifies the result of the redirect operation performed.

Optionally, the media gateway verifies the result of the performed redirection operation, including:

The media gateway checks whether the client re-acquires the specified redirect resource within a set time by tracking the client performing the redirection operation;

When the media gateway verifies that the client re-acquires the specified redirect resource, adds a verification success identifier to the feature of the HTTP data stream as the second detection result, and saves the preset identifier In the feature library;

When the media gateway verifies that the specified resource is not re-acquired by the client, adding a verification failure identifier to the feature of the HTTP data stream as the second detection result, and saving the preset In the feature library.

A redirection device is disposed in a media gateway, where the redirecting device includes:

The obtaining module is configured to: intercept an HTTP data stream exchanged between the client and the server;

The detecting module is configured to: detect whether the HTTP data stream intercepted by the acquiring module supports redirection;

The execution module is configured to: perform a redirection operation according to whether the detection module detects whether the HTTP data stream supports the detection result of the redirection and the predetermined policy.

Optionally, the detecting module includes:

a first detecting unit, configured to: detect a feature of the HTTP data stream and the preset feature Whether the library matches, when detecting that the feature of the HTTP data stream matches the preset feature database, the HTTP data stream is used as a first detection result supporting redirection.

Optionally, the detecting module further includes:

a second detecting unit, configured to: detect whether a feature of the HTTP data stream matches the preset feature database, and when detecting that the feature of the HTTP data stream does not match a preset feature database, The HTTP data stream serves as the second detection result that supports redirection.

Optionally, the execution module includes:

An execution unit, configured to: perform the redirection according to the HTTP data flow as the first detection result or the second detection result that supports redirection, and a redirection service that needs to be supported in the predetermined policy operating.

The method and device for redirecting provided by the embodiment of the present invention intercepts an HTTP data stream exchanged between a client and a server through a media gateway, and detects whether the intercepted HTTP data stream supports redirection, thereby determining a result according to the detection result and a predetermined policy. The redirection operation is performed. The embodiment of the present invention solves the problem that the media gateway actively uses the HTTP redirection technology to push the reminder information to the user in the related art, which may cause the user to fail to access the service to a certain extent, and reduces the occurrence of the failure scenario. Improve the user experience.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic structural diagram of a redirection device provided by the related art;

2 is a flowchart of a method for redirecting according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a device for redirecting according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of another apparatus for redirecting according to an embodiment of the present invention.

Embodiments of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments herein may be arbitrarily combined with each other.

The steps illustrated in the flowchart of the figures may be executed in a computer system such as a set of computer executable instructions. Also, although logical sequences are shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

FIG. 2 is a flowchart of a method for redirection according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps, that is, steps 201 to 203:

Step 201: The media gateway intercepts an HTTP data stream exchanged between the client and the server.

Step 202: The media gateway detects whether the intercepted HTTP data stream supports redirection;

Step 203: The media gateway performs a redirection operation according to whether the HTTP data stream supports the detection result of the redirection and the predetermined policy.

Optionally, the media gateway detects whether the intercepted HTTP data stream supports redirection, including: the media gateway detects whether the feature of the HTTP data stream matches a preset feature database; and when the media gateway detects the HTTP data When the feature of the stream matches the preset feature database, the HTTP data stream is used as the first detection result supporting the redirection.

Optionally, the media gateway detects whether the intercepted HTTP data stream supports redirection, and further includes: when the media gateway detects that the feature of the HTTP data stream does not match the preset feature database, the HTTP data is used. The stream serves as the second test result that supports redirection.

Optionally, the media gateway performs a redirection operation according to whether the HTTP data stream supports the detection result of the redirection and the predetermined policy, where the media gateway uses the HTTP data stream as a first detection result that supports redirection or The second detection result, and the redirection service that needs to be supported in the predetermined policy, performs a redirection operation.

Optionally, after the media gateway performs the redirection operation according to the HTTP data flow as the second detection result that supports the redirection, the method further includes: the media gateway verifying the result of the performing the redirection operation. In the actual application, the media gateway verifies the result of the redirection operation, which may include: the media gateway, by tracking the client performing the redirection operation, verifying whether the client re-acquires the specified redirection resource within a set time; When the media gateway verifies that the client reacquires the specified redirection resource, the verification success identifier is added to the feature of the HTTP data stream as the second detection result, and is saved in the preset feature database; when the media gateway verifies When the client does not re-acquire the specified redirect resource, add the feature of the HTTP data stream as a result of the second detection. Verify the failure ID and save it to the preset signature database.

FIG. 3 is a schematic structural diagram of a redirection device according to an embodiment of the present invention. The redirection device is disposed in a media gateway. As shown in FIG. 3, the redirection device includes: an obtaining module 301, and a detecting module 302. And executing module 303.

The obtaining module 301 is configured to: intercept an HTTP data stream that is exchanged between the client and the server;

The detecting module 302 is configured to: detect whether the HTTP data stream intercepted by the obtaining module 301 supports redirection;

The executing module 303 is configured to perform a redirection operation according to whether the detection module 302 detects whether the HTTP data stream supports the detection result of the redirection and the predetermined policy.

Optionally, the detecting module 302 includes: a first detecting unit, configured to: detect whether a feature of the HTTP data stream matches a preset feature database, when detecting a feature of the HTTP data stream and a preset When the signature database is matched, the HTTP data stream is used as a first detection result for supporting redirection; and the second detecting unit is configured to: detect whether the feature of the HTTP data stream matches a preset feature database, and when detecting When the feature of the HTTP data stream does not match the preset feature database, the HTTP data stream is used as a second detection result that supports redirection. The execution module 303 includes: an execution unit, configured to: perform a redirection operation according to the HTTP data flow as a first detection result or a second detection result that supports redirection, and a redirection service that needs to be supported in a predetermined policy .

4 is a schematic structural diagram of another apparatus for redirecting according to an embodiment of the present invention. As shown in FIG. 4, the HTTP protocol uses a request/response mode, corresponding to a client and a server, and the client obtains data content through an HTTP protocol. The server provides data content. The server indicates the result of the current request by the client through the response code, wherein the redirect code indicates that the current resource needs to be obtained by another URL, and the default client will initiate a connection to the new URL and request the data content after receiving the indication. On the media gateway that needs to actively use the HTTP redirect method to push the reminder information, the HTTP service packet is first intercepted at the media gateway. The following three modules are deployed in the media gateway:

1), detection module 401: set to: detect whether the HTTP stream can be redirected;

2) Execution module 402: configured to: perform redirection according to input and policy decision of the detection module 401;

3), the verification module 403: set to: verify whether the client performs the redirection behavior as expected, and update the feature.

In this embodiment, the detecting module 401 identifies an HTTP stream that supports redirection through an updateable feature library. Alternatively, a public User-Agent domain or a private domain feature may be used; It is artificially configured (updateable signature library) or automatically detected. If the current feature library has no matching features, the automatic detection starts, and the keyword information of the domain can be extracted, for example, the approximate matching detection method based on the Levinstein distance can be extracted; the current HTTP stream is outputted according to the redirection, and the extracted The feature passes the subsequent module. The detection information of the HTTP output by the detection module 401 includes whether the redirection is supported, whether the matched feature has been verified by the verification module 403, and whether there is a newly extracted feature. That is to say, when the web browser or the application APP accesses the network, the domain such as User-Agent in the HTTP header field carries the client information; some APPs carry some private features, which indicate the relevant information of the client; Download the service, the request line will also carry some keywords; these features can be used as alternative information for HTTP service detection. As applications such as APP increase, these features may change, so the detection module 401 is updatable. The target of the detection module 401 is to detect which HTTP streams can be redirected, and the detection module 401 needs a basic feature library (this library can be manually set or updated) for matching decisions; if the detection module 401 is not recognized based on the current feature library , according to the set framework (such as which domains may have key information) to extract key information, and pass the results to subsequent modules.

The result of the detection module 401 is passed to the execution module 402, which determines whether to perform the redirection according to the policy of the system (local configuration or remote configuration indicates whether active redirection needs to be performed) and the detection result of the detection module 401 as an input. If the HTTP stream is redirected, and the feature matched by the detection module 401 has not passed the verification module 403 or belongs to the newly identified feature, the current HTTP stream information needs to be recorded, that is, if the detection module 401 prompts that the current HTTP feature is not After confirming or belonging to the newly detected key information, the feature of the current message is recorded and transmitted to the verification module 403, and the signature library is updated by the verification module 403.

In order to verify whether the client performs the expected redirection behavior, improve the correct rate of the detection module 401, and deploy a redirection successful verification module 403, the verification module 403 is configured to: track and verify whether the HTTP process actively performing the redirection push is The process of re-acquiring the specified resource is initiated, that is, by tracking the client that performed the redirection, checking whether the client has accessed within a certain time limit. The specified redirect resource. The verification module 403 inversely updates the feature library of the detection module 401 according to the detection result, such as modifying the feature library or adding a new feature to the feature library. That is to say, for the feature of successful verification, it is necessary to update the feature library in reverse, such as setting a trusted field or inserting a new feature content; for the feature that fails to be verified, it is also required to identify in the feature library. Therefore, the role of the verification module 403 includes correcting the recognition result, solidifying the trusted feature, and increasing the candidate feature.

After repeated, the three modules reach the goal of automatically detecting and performing the redirection.

In summary, the embodiments of the present invention have the following technical effects:

The detection module 401 and the verification module 403 are used to selectively perform redirection in the HTTP stream that needs to be redirected, which improves the success rate of the HTTP redirection push and reduces the perceived failure scenario caused by the active push. To enhance the user experience.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

The embodiment of the present invention intercepts the HTTP data flow exchanged between the client and the server through the media gateway, and detects whether the intercepted HTTP data stream supports redirection, thereby performing a redirection operation according to the detection result and the predetermined policy; Medium Media Gateway actively uses HTTP redirection technology To push the reminder information to the user, the user may fail to access the service to a certain extent, and reduce the occurrence of the failure scenario and improve the user experience.

Claims

A method of redirection, including:

The media gateway intercepts the HTTP data stream exchanged between the client and the server;

The media gateway detects whether the intercepted HTTP data stream supports redirection;

The media gateway performs a redirection operation according to whether the HTTP data stream supports the detection result of the redirection and the predetermined policy.
The method of claim 1, wherein the media gateway detects whether the intercepted HTTP data stream supports redirection, including:

The media gateway detects whether the feature of the HTTP data stream matches a preset feature database;

When the media gateway detects that the feature of the HTTP data stream matches the preset feature database, the HTTP data stream is used as a first detection result that supports redirection.
The method of claim 2, wherein the media gateway detects whether the intercepted HTTP data stream supports redirection, and further includes:

When the media gateway detects that the feature of the HTTP data stream does not match the preset feature database, the HTTP data stream is used as a second detection result that supports redirection.
The method of claim 3, wherein the media gateway performs a redirection operation according to whether the HTTP data stream supports the detection result of the redirection and the predetermined policy, including:

The media gateway performs the redirection operation according to the HTTP data stream as the first detection result or the second detection result that supports redirection, and the redirection service that needs to be supported in the predetermined policy.
The method of claim 4, further comprising: after the performing, by the media gateway, the redirection operation according to the second detection result of the redirection of the HTTP data stream,

The media gateway verifies the result of the redirect operation performed.
The method of claim 5, wherein the media gateway verifies the result of the performed redirection operation, including:

The media gateway checks the client performing the redirection operation and checks the set time Whether the client re-acquires the specified redirect resource;

When the media gateway verifies that the client re-acquires the specified redirect resource, adds a verification success identifier to the feature of the HTTP data stream as the second detection result, and saves the preset identifier In the feature library;

When the media gateway verifies that the specified resource is not re-acquired by the client, adding a verification failure identifier to the feature of the HTTP data stream as the second detection result, and saving the preset In the feature library.
A redirection device is disposed in a media gateway, where the redirecting device includes:

The obtaining module is configured to: intercept an HTTP data stream exchanged between the client and the server;

The detecting module is configured to: detect whether the HTTP data stream intercepted by the acquiring module supports redirection;

The execution module is configured to: perform a redirection operation according to whether the detection module detects whether the HTTP data stream supports the detection result of the redirection and the predetermined policy.
The apparatus of claim 7 wherein said detecting module comprises:

a first detecting unit, configured to: detect whether a feature of the HTTP data stream matches a preset feature database, and when the feature of the HTTP data stream is detected to match a preset feature database, the HTTP data stream is As the first test result to support redirection.
The apparatus of claim 8, wherein the detecting module further comprises:

a second detecting unit, configured to: detect whether a feature of the HTTP data stream matches the preset feature database, and when detecting that the feature of the HTTP data stream does not match a preset feature database, The HTTP data stream serves as the second detection result that supports redirection.
The apparatus of claim 9, wherein the execution module comprises:

An execution unit, configured to: perform the redirection according to the HTTP data flow as the first detection result or the second detection result that supports redirection, and a redirection service that needs to be supported in the predetermined policy operating.