WO2009067926A1 - Méthode de redirection de pages et passerelle wap - Google Patents

Méthode de redirection de pages et passerelle wap Download PDF

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Publication number
WO2009067926A1
WO2009067926A1 PCT/CN2008/073035 CN2008073035W WO2009067926A1 WO 2009067926 A1 WO2009067926 A1 WO 2009067926A1 CN 2008073035 W CN2008073035 W CN 2008073035W WO 2009067926 A1 WO2009067926 A1 WO 2009067926A1
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WO
WIPO (PCT)
Prior art keywords
page
user terminal
redirection
wap gateway
redirect
Prior art date
Application number
PCT/CN2008/073035
Other languages
English (en)
French (fr)
Inventor
Zanfeng Yang
Xuri Liu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to ES08853781T priority Critical patent/ES2414080T3/es
Priority to BRPI0820424-1A priority patent/BRPI0820424A2/pt
Priority to EP08853781A priority patent/EP2205011B1/en
Publication of WO2009067926A1 publication Critical patent/WO2009067926A1/zh
Priority to US12/779,851 priority patent/US20100223355A1/en
Priority to US13/731,360 priority patent/US8918476B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/66Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/04Protocols specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/56Provisioning of proxy services
    • H04L67/563Data redirection of data network streams
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/56Provisioning of proxy services
    • H04L67/565Conversion or adaptation of application format or content
    • H04L67/5651Reducing the amount or size of exchanged application data

Definitions

  • the present invention relates to the field of communications, and in particular to a page redirection technique. Background technique
  • a user terminal can initiate a page request to a WAP gateway through a wireless interface, and the WAP gateway performs a Universal Resource Locator ("URL") according to the uniform resource location in the page request.
  • the service provider Service Provider, "SP" is requested to request the page requested by the user terminal, and the page obtained from the SP is returned to the user terminal.
  • SP Service Provider
  • the page location requested by the user terminal may change, for example, the page requested by the user terminal is originally in the server A, and is now changed to the server B. At this time, the user terminal needs to perform page redirection to obtain the desired page. .
  • the user terminal initiates a page request to the WAP gateway through the wireless interface, where the request carries the URL information of the page at the server A.
  • the WAP gateway obtains the page corresponding to the URL information from the server A of the SP according to the URL information, and directly returns the page to the user terminal. Since the page desired by the user terminal has been changed from the server A to the server B, the page acquired by the user terminal from the server A contains redirection information, and the user terminal is required to reacquire from the server B.
  • the user terminal performs page redirection according to the redirect information, thereby obtaining the location Expected page.
  • the inventors of the present invention have found that, according to the currently existing technology, the delay of the user terminal from the initiation of the request to the acquisition of the final page is long. This is because the page 4 accessed by the user terminal may have multiple redirects, that is, multiple redirection interactions between the user terminal and the SP, and between the user terminal and the WAP gateway.
  • the wireless interface transmission requires a long delay, so multiple redirection between the user terminal and the SP will result in a longer delay for the user terminal from the initiation of the request to the acquisition of the final page.
  • the delay of the user terminal to obtain the final page is related to the number of redirects. The more the number of redirects, the longer the delay.
  • the total length of time that the user terminal requests the "real estate car *people's altar" to get the page is 8.3S, of which the redirection is 4 times and takes 5 seconds, and each redirection takes about 1S;
  • the page content of the people's altar is 3S. It can be seen that the operation of multiple redirection is the main reason that affects the page refresh. Summary of the invention
  • the main technical problem to be solved by the embodiments of the present invention is to provide a page redirection method and a wireless application protocol gateway, so that the delay of obtaining a page by the terminal is reduced.
  • an embodiment of the present invention provides a page redirection method, which includes the following steps:
  • the wireless application protocol when receiving the page request of the user terminal, requests the service provider to request the page requested by the user terminal;
  • the WAP gateway performs page redirection, and returns the obtained page to the user terminal.
  • An embodiment of the present invention further provides a wireless application protocol gateway, including:
  • a requesting module configured to: when receiving a page request of the user terminal, request a page requested by the user terminal from the service provider and receive a page returned by the service provider;
  • a first determining module configured to determine, after the requesting module receives the page returned by the service provider, whether the page returned by the service provider meets a page redirection condition
  • a redirecting module configured to perform page redirection when the first determining module determines that the page returned by the service provider meets a page redirection condition
  • a sending module configured to return a page obtained by redirecting the redirecting module to the user end End.
  • the WAP gateway When receiving the page request of the user terminal, the WAP gateway requests the SP for the page requested by the user terminal. If the page returned by the SP meets the page redirection condition, the WAP gateway replaces the user terminal for page redirection, and The page obtained after the orientation is returned to the user terminal. When the page requested by the user terminal needs to be redirected, the WAP gateway replaces the user terminal for page redirection instead of the user terminal to initiate page redirection, thereby reducing air interface interaction between the WAP gateway and the user terminal, thereby reducing The terminal obtains the delay of the page, thereby improving user satisfaction and improving the efficiency of page refresh.
  • the WAP gateway replaces the user terminal for page redirection, and can also reduce the use of the wireless network bandwidth, and further Reduce mobile integrated procurement costs, and reduce reliance on user terminals, reducing user complaints.
  • FIG. 1 is a schematic flowchart of a page redirection method in an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a specific process of a page redirection method in an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a specific process of a page redirection method in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a specific process of a page redirection method in an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a specific process of a page redirection method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a specific process of a page redirection method in an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a specific structure of a WAP gateway according to an embodiment of the present invention. detailed description
  • FIG. 1 it is a schematic flowchart of a method for redirecting a page in an embodiment of the present invention.
  • the WAP gateway when receiving a page request from a user terminal, the WAP gateway requests the user terminal from the SP. The requested page. If the page returned by the SP meets the page redirection condition, the WAP gateway replaces the user terminal for page redirection, and returns the obtained page to the user terminal.
  • step 110 the WAP gateway receives a page request from the user terminal, and requests the SP for the page requested by the user terminal according to the request.
  • the page request of the page is sent to the WAP gateway through the wireless interface.
  • the WAP gateway After receiving the request for the page, the WAP gateway requests the SP for the page requested by the user terminal according to the URL information carried in the request.
  • step 120 the WAP gateway determines whether the page returned by the SP meets the page redirection condition. If the page redirection condition is met, the process proceeds to step 130. If the page redirection condition is not met, the process proceeds to step 140.
  • the WAP gateway After the WAP gateway requests the page from the SP according to the URL information carried in the page request of the user terminal, the SP returns a page corresponding to the URL information to the WAP gateway.
  • the WAP gateway parses the page returned by the SP. If the page returned by the SP meets the page redirection condition, it indicates that the page that the user terminal expects to acquire is not in the original server, and the page redirection is required; if the page returned by the SP does not match
  • the page redirection condition indicates that the page that the user terminal desires to acquire is still in the original server, and the page returned by the SP is the page desired by the user terminal.
  • the page redirection condition is that the page contains a redirect series status code indicating that a redirect operation is required, or the page contains an "onenterforward" flag. Since for the general page, if the status code is the redirected series status code, the page needs to be redirected; for the Wireless Markup Language (WML) page, if the page contains " The onenterforward" flag indicates that the page needs to be redirected. Therefore, the redirection judgment condition of the present embodiment is applied not only to a general page but also to a WML page.
  • WML Wireless Markup Language
  • the SP returns a page containing 300, 301, 302, 303, 305, 307 and other redirected series status codes, or the page returned by the SP is a WML page, and the page contains the "onenterforward" tag.
  • the WAP gateway determines that the page returned by the SP meets the page redirection condition, and needs to perform page redirection, that is, proceeds to step 130. If the page returned by the SP is a WML page, but the page does not contain the "onenterforward" tag, or the page returned by the SP is not a WML page, and the page does not contain the redirected series status of 300, 301, 302, 303, 305, 307, etc.
  • the WAP gateway will determine that the page returned by the SP does not meet the page redirection condition, and no page redirection is required, that is, the step is entered.
  • the WAP gateway needs to perform page redirection instead of the user terminal, and returns the obtained page to the user terminal.
  • the WAP gateway can perform page redirection according to the redirect information carried in the page that is returned by the SP and meets the page redirection condition, and returns the obtained page to the user terminal.
  • the WAP gateway replaces the user terminal for page redirection instead of the user terminal to initiate page redirection, thereby reducing air interface interaction between the WAP gateway and the user terminal, thereby reducing The terminal obtains the delay of the page, thereby improving user satisfaction and improving the efficiency of page refresh.
  • the WAP gateway replaces the user terminal for page redirection, and can also reduce the use of the wireless network bandwidth, and further Reduce mobile integrated procurement costs, and reduce reliance on user terminals, reducing user complaints.
  • step 140 when the WAP gateway determines that the page returned by the SP does not meet the page redirection condition, the page returned by the SP is directly sent to the user terminal without the page redirection, so that the user terminal obtains the desired page.
  • FIG. 2 it is a specific flowchart of the method for redirecting a page in the embodiment of the present invention.
  • This embodiment is an embodiment of the embodiment shown in FIG. 1.
  • the WAP gateway needs to save the SP.
  • step 201 the user terminal initiates a page request to the WAP gateway, and the URL of the page requested to be accessed is http: ⁇ wap.montemet.com/redirect.wml.
  • step 202 after receiving the request for the page, the WAP gateway can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user. The page requested by the terminal.
  • the user terminal with the terminal type of WAP2.0 supports the WML page, and the user terminal with the terminal type of WAP1.x does not support the WML page. Therefore, if the user terminal that initiates the page request is a WAP1.x type user terminal, the WAP gateway can select The WML page is not sent to the user terminal.
  • the WAP gateway saves the "Cookie” information in the page returned by the SP, so when the WAP gateway needs to request the SP to obtain the obtained page, according to the saved "Cookie” information, Successfully obtained the requested page.
  • the specific process will be explained by the following steps 207 to 214.
  • step 207 the user terminal initiates a page request to the WAP gateway, and the URL of the requested page is http: ⁇ wap.montemet.eom/news/2.wml.
  • step 208 after receiving the request for the page, the WAP gateway can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • step 210 the WAP gateway sends the WML page returned by the DreamNet to the user terminal.
  • step 211 the user terminal initiates a page request to the WAP gateway, and the URL of the requested page is http: ⁇ wap.sina.eom/2.wml.
  • step 212 after receiving the request for the page, the WAP gateway can learn that the page requested by the user terminal is in the Sina network according to the URL information in the request, and therefore forwards the request to the Sina network to request the user.
  • step 213 Sina found the correct one in the request forwarded by the WAP gateway.
  • step 214 the WAP gateway sends the WML page returned by the Sina network to the user terminal. It is not difficult to find that steps 207 to 210 are the process for the user terminal to access the URL http://wap.monternet.eom/news/2.wml; Steps 211 to 214 are for the user terminal to access the URL as http://wap. The process of sina.eom/2.wml. There is no clear relationship between the two processes. The WAP gateway successfully obtains the cookie information from the SP and delivers it to the user terminal.
  • the cookie information is equivalent to a session state management function.
  • the SP determines whether the user's request is legitimate based on the cookie information. For example, if a user terminal accesses a website (such as Monternet), the SP first sets a cookie for the user terminal, and the user terminal needs to carry the cookie when accessing other directories or files of the website during the validity period of the cookie. Otherwise the page will stay on the home page and you will not be able to enter the next level of the directory.
  • some websites may set some personalized pages (such as language settings) for a certain user terminal. If the user terminal needs to access the website again during the validity period of the cookie, the website information may be re-set according to the cookie information. .
  • some websites may require users to enter an account number, password, etc. when they are accessed. After losing the website, the website will set a cookie for the user, so that when the website is accessed again during the validity period of the cookie, it is not necessary to re-enter the account number, password, etc. .
  • the webpage cookie information saved by the WAP gateway is for one terminal, there are more than four ways to implement the solution, such as storing the cookie information in a memory or a database.
  • FIG. 3 it is a specific process diagram of a page redirection method in the embodiment of the present invention.
  • This embodiment is an embodiment of the embodiment shown in FIG. 1.
  • the WAP gateway needs to be heavy.
  • the relative URL information in the page obtained after the orientation is changed to the absolute URL information.
  • step 301 the user terminal initiates a page request to the WAP gateway, requesting access to the page.
  • the URL is http: ⁇ wap.montemet.com/redirect.wml.
  • the WAP gateway can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal
  • Monternet returns to the jump page. After receiving the page request forwarded by the WAP gateway, Monternet can know that the page that the user terminal expects to obtain has been changed to the Sina network, so the dream network returns a jump page to the WAP gateway, and the jump page includes the redirect Go to http://wap.sina.com/sports.wml ⁇ jt ⁇ .
  • step 304 after receiving the jump page, the WAP gateway processes the jump page. Specifically, after receiving the jump page, the WAP gateway can learn that the page meets the page redirect condition by parsing the jump page, and needs to be redirected to http://wap.sina.com/sports .wml. Therefore, the WAP gateway substitutes the user terminal for page redirection and redirects to http: ⁇ wap.sina.com/sports.wml.
  • Sina returns a WML page to the WAP gateway.
  • the WAP gateway determines whether the WML page returned by the Sina network contains the relative URL information, and if so, changes the URL information to the absolute URL information.
  • the WML page returned by Sina.com contains the relative URL information: . basketball. wml, so the WAP gateway needs to change the URL information to absolute URL information, and change the basketball. wml to http: ⁇ wap .sina.com/ basketball. wml.
  • the WML page with the changed URL information is sent to the user terminal.
  • step 307 the user terminal accesses the page specified by the absolute URL, that is, the user terminal initiates a page request to the WAP gateway, and the URL of the page requesting access is http: ⁇ wap.sina.com/ basketball, wml.
  • the WAP gateway can learn that the page requested by the user terminal is in the Sina network according to the URL information in the request, and therefore forwards the request to the Sina network to request the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the Sina network according to the URL information in the request, and therefore forwards the request to the Sina network to request the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the Sina network according to the URL information in the request, and therefore forwards the request to the Sina network to request the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the Sina network according to the URL information in the request, and therefore forwards the request to the Sina network to request the user. The page requested by the terminal.
  • Sina returns the requested WML page to the WAP gateway.
  • step 310 after receiving the WML page returned by Sina.com, the WAP gateway returns the page to the user terminal.
  • the relative URL information needs to be modified to absolute URL information to ensure that subsequent user terminal access can reach the accurate page.
  • FIG. 4 it is a specific flowchart of the method for redirecting a page in the embodiment of the present invention.
  • the page requested by the user terminal is Download the page or configure it as a judgment without redirecting the page.
  • Steps 410 and 420 are the same as steps 110 and 120, respectively, and are not described herein again. If the WAP gateway determines that the page returned by the SP meets the page redirection condition in step 420, then proceeds to step 430; if the page redirection condition is not met, then proceeds to step 460.
  • step 430 the WAP gateway determines whether the page requested by the user terminal is a download page or is configured to not need to redirect the page. If it is a download page or is configured to not need to redirect the page, the process proceeds to step 440, if it is not a download page or is not configured. To avoid having to redirect the page, proceed to step 450.
  • the WAP gateway can determine, according to the redirection information in the page, whether the page requested by the user terminal is a download page or is configured to not need to be redirected. For example, the page returned by the SP to the WAP gateway carries the information redirected to http://wap.sina.eom/2.wml, and the WAP gateway can determine the request of the user terminal according to the suffix file name of the redirected URL. Whether the page is a download page or configured to not require a redirect page.
  • step 440 If it is determined to be a download page or configured to not need to redirect the page, proceed to step 440, and send the page returned by the SP directly to the user terminal, and the user terminal performs page redirection; if it is determined that the page is not downloaded or not configured as unnecessary If the page is redirected, the process proceeds to step 450.
  • the WAP gateway replaces the user terminal for page redirection, and returns the obtained page to the user terminal. Step 450 is identical to step 130.
  • Step 460 the page returned by the SP is directly sent to the user terminal, so that the user terminal obtains the desired page. Step 140 is identical.
  • the WAP gateway needs to determine whether the page requested by the user terminal is a download page or is configured to not need to redirect the page.
  • the page requested by the user terminal is a download page or is configured to not require a redirect page, the problem that the user terminal cannot recognize the file can be avoided.
  • a URL may be set in the WAP gateway.
  • the URL in the whitelist is the page that needs to be redirected by the WAP gateway.
  • the URL in the blacklist is a page that prohibits the WAP gateway from redirecting. It supports fuzzy matching. Alternatively, set a redirect in the WAP gateway.
  • the suffix file name of the URL is a black and white list.
  • the suffix file in the whitelist is named as the page to be redirected by the WAP gateway.
  • the suffix file in the blacklist is named as the page that prohibits the WAP gateway from redirecting.
  • FIG. 5 it is a specific process diagram of a page redirection method in the embodiment of the present invention. This embodiment further solves the problem of a timer in a redirect page on the basis of the embodiment shown in FIG. .
  • Steps 510 to 540 are completely the same as steps 410 to 440, and details are not described herein again.
  • the WAP gateway determines whether the page requested by the user terminal includes a timer. That is to say, when the WAP gateway determines that the page requested by the user terminal is not a download page or is not configured to re-direct the page, it needs to further determine whether the page contains a timer. If it is determined that the timer is included, the process proceeds to step 560; if it is determined that the timer is not included, the process proceeds to step 570.
  • step 560 the WAP gateway starts a timer and waits for a timeout. This is because if the page requested by the user terminal includes a timer, it indicates that the page requested by the user terminal needs to wait for a certain period of time before being redirected. Therefore, the WAP gateway needs to wait for the timer to expire before starting the page. Redirect to ensure that the page requested by the user terminal can be successfully obtained.
  • step 570 the WAP gateway replaces the user terminal for page redirection, and returns the obtained page to the user terminal. This step is identical to step 450.
  • step 520 the WAP gateway determines that the page returned by the SP does not meet the page redirection condition
  • the process proceeds to step 580, and the page returned by the SP is directly sent to the user terminal, so that the user terminal obtains the desired page.
  • Step 460 is identical.
  • a sixth embodiment of the present invention relates to a page redirection method, which is substantially the same as the fourth embodiment, except that in the fourth embodiment, the WAP gateway performs page redirection instead of the user terminal. Determining whether the page requested by the user terminal is a download page or configured to not need to redirect the page. If it is determined that the page is not a download page or is not configured to be a redirect page, the page redirect is performed instead of the user terminal; if it is determined to be a download page or If the page is not required to be redirected, the page that meets the page redirection condition is directly sent to the user terminal, and the user performs page redirection to avoid the problem that the user terminal cannot recognize the downloaded file.
  • the page obtained after the redirect is returned to the user terminal, whether it is a download page or a configuration that does not require a redirect page, if it is determined not to be a download page or not configured to require no redirect page, the page obtained after the redirect is obtained. Return to the user terminal; if it is determined to be a download page or configured to not need to redirect the page, the page that meets the page redirection condition is sent to the user terminal, and the user performs page redirection to avoid the user terminal not recognizing the download. File problem.
  • FIG. 6 is a schematic diagram of a specific process of a page redirection method according to an embodiment of the present invention.
  • the user terminal initiates a page request to the WAP gateway, and the URL of the requested page is http://kjava.montemet.com/download.wml.
  • the WAP gateway can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal can learn that the page requested by the user terminal is in the dream network according to the URL information in the request, and therefore forwards the request to the dream network, requesting to acquire the user.
  • the page requested by the terminal
  • step 603 Monternet returns to the jump page, and the jump page includes a link to the file to be downloaded.
  • Monternet After receiving the page request forwarded by the WAP gateway, Monternet can know that the page that the user terminal expects to obtain has been changed to the Sina network, so Monternet returns a jump page to the WAP gateway.
  • step 604 after receiving the jump page, the WAP gateway processes the jump page. Specifically, after receiving the jump page, the WAP gateway can learn that the page meets the page redirect condition by parsing the jump page, and needs to be redirected to http://wap.sina.com/Ljar . Therefore, the WAP gateway replaces the user terminal for page redirection and redirects to http://wap.sina.eom/l.jar.
  • step 605 Sina returns the WAP gateway redirected page to the WAP gateway.
  • the WAP gateway determines whether the page is a download page or is configured to not require a redirect page.
  • the WAP gateway can determine whether the page is a download page or is configured to not require a redirect page according to the Multimedia Internet Mail Extend ("MIME") type of the page. If the result of the determination is not a download page or is not configured to be a redirect page, the page obtained after the redirect is returned to the user terminal, and the process ends; if the result of the determination is a download page or is configured to not require a redirect page, Go to step 607.
  • the result of the determination in this embodiment is that it is a download page or is configured to not require a redirect page, and therefore proceeds to step 607.
  • step 607 the WAP gateway saves the page obtained from the Sina network, and returns the jump page obtained from the DreamNet to the user terminal.
  • step 608 after receiving the jump page, the user terminal can learn that the page meets the page redirection condition by parsing the jump page, and needs to be redirected to http://wap.sina.com/Ljar. Therefore, the user terminal performs page redirection and redirects to http://wap.sina.eom/l.jar.
  • the WAP gateway can determine that the page exists in the WAP gateway according to the URL in the request, so the page can be directly returned to the user terminal.
  • the WAP gateway may perform multiple page redirection, that is, the second or even more redirection is required to obtain the page after the first redirection. In order to finally get the page you need. Then, after the WAP gateway first performs page redirection, the method may further include the following steps:
  • the WAP gateway Determining whether the page obtained by the WAP gateway after the page redirection meets the page redirection condition, if it is determined that the page does not match, the WAP gateway sends the page that does not meet the page redirection condition to the user terminal; If it is determined that the message is consistent, the WAP gateway continues to perform the page redirection until the page obtained after the page redirection does not meet the page redirection condition, and the page that does not meet the page redirection condition is sent to the user terminal.
  • the WAP gateway includes: a requesting module, configured to: when receiving a page request of a user terminal, request the SP to request the user terminal The page receives the page returned by the SP; the first determining module is configured to: after the requesting module receives the page returned by the SP, determine whether the page returned by the SP meets the page redirection condition; and the redirecting module is configured to be in the first The determining module determines that the page returned by the SP meets the page redirection condition, and performs page redirection instead of the user terminal.
  • the sending module is configured to return the page obtained by redirecting the redirection module to the user terminal.
  • the page redirection condition is that the page includes a redirection series status code indicating that the redirection operation is required, or the page includes an "onenterforward" flag, so that the embodiment of the present invention is applicable not only to the general page but also to the WML page.
  • the WAP gateway in this embodiment may further include a storage module, configured to save "Cookie” information in the page returned by the SP; and when the requesting module needs to request the acquired page from the SP, according to the "Cookie” information saved by the storage module. Request to the service provider to be able to successfully get the page.
  • the WAP gateway in this embodiment may further include a URL information changing module, configured to change the relative URL information when the relative URL information is included in the page obtained after the redirecting module is redirected. For absolute URL information.
  • the sending module returns the page with the changed URL information to the user terminal, so as to avoid the access failure problem that may occur when the user terminal further accesses the redirected page.
  • the WAP gateway in this embodiment may further include a second determining module, configured to determine whether the page requested by the user terminal is a download page or is configured to not need to redirect the page.
  • the sending module is further configured to send a page that meets the page redirection condition to the user terminal.
  • the second determining module determines, when the first determining module determines that the page meets the page redirection condition, whether the page requested by the user terminal is a download page or is configured to not need to be redirected, and the result of the determination is not a download page.
  • the redirection module is triggered.
  • the trigger sending module sends the page that meets the page redirection condition to the user terminal.
  • the second determining module determines whether the page requested by the user terminal is a download page or is configured to not need to redirect the page, and when the determination result is not a download page or is not configured to be a redirect page
  • the trigger sending module returns the page obtained after the redirect to the user terminal; when the determination result is the download page or is configured to not need to redirect the page, the trigger sending module sends the page that meets the page redirecting condition to the user terminal.
  • the WAP gateway needs to determine whether the page requested by the user terminal is a download page or is configured to not need to redirect the page, so that the page requested by the user terminal When downloading a page or configuring it to eliminate the need for a redirect page, it is possible to avoid the problem that the user terminal does not recognize the file.
  • the WAP gateway when receiving the page request of the user terminal, the WAP gateway requests the SP for the page requested by the user terminal, and if the page returned by the SP meets the page redirection condition, The WAP gateway replaces the user terminal for page redirection, and returns the page obtained after the redirection to the user terminal.
  • the WAP gateway replaces the user terminal for page redirection instead of the user terminal to initiate page redirection, thereby reducing air interface interaction between the WAP gateway and the user terminal, thereby reducing The terminal obtains the delay of the page, thereby improving user satisfaction and improving the efficiency of page refresh.
  • the WAP gateway replaces the user terminal for page redirection, and can also reduce the use of the wireless network bandwidth, and further Reduce mobile integrated procurement costs, and reduce reliance on user terminals, reducing user complaints.
  • the page redirection condition is that the page contains a redirected series status indicating that a redirect is required.
  • the code, or the page contains the "onenterforward" tag, so that embodiments of the present invention are applicable not only to general pages, but also to WML pages.
  • the WAP gateway saves the "Cookie" information in the page returned by the SP, so that it can be successfully obtained when it needs to request the SP to obtain the obtained page.
  • the WAP gateway replaces the user terminal for page redirection, and the obtained page contains the relative URL information
  • the relative URL information is changed to the absolute URL information, and then sent to the user terminal, so as to prevent the user terminal from being in the redirected page. Access failures that may result when further access is made.
  • the WAP gateway needs to determine whether the page requested by the user terminal is a download page or is configured to not need to redirect the page, so that the page requested by the user terminal When downloading a page or configuring it to eliminate the need for a redirect page, it is possible to avoid the problem that the user terminal does not recognize the file.

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Description

页面重定向方法及无线应用协议网关 本申请要求于 2007 年 11 月 13 日提交中国专利局、 申请号为 200710124514.8、 发明名称为 "页面重定向方法及无线应用协议网关" 的中国专 利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信领域, 特别涉及页面重定向技术。 背景技术
随着用户对移动通信需求的提高, 移动网络需要不断推出越来越多的新业 务, 以便满足各种各样的用户需求。 近年来, 移动网络的新业务可以说是不断 推陈出新, 从数据通信与传真、 中英文短信服务、 国际漫游, 到手机证券、 双 频网、 虚拟专用网、 秘书服务、 无线应用协议(Wireless Application Protocol, 筒称 "WAP" )、 手机银行等, 用户通过这些新业务, 越来越多地体验到移动通 信技术带给人们的实用性和娱乐性。
目前, 网页浏览属于应用较为广泛的一种业务, 用户终端通过无线接口可 以向 WAP网关发起页面请求, 由 WAP网关根据该页面请求中的统一资源定位 ( Universal Resource Locator, 筒称 "URL" ), 向业务提供商 ( Service Provider, 筒称 "SP" )请求该用户终端所请求的页面, 并将从 SP处获取的页面返回给该 用户终端。
由于用户终端请求的页面位置可能发生变化, 比如说, 用户终端请求的页 面原本在服务器 A中, 现更改为在服务器 B中, 此时, 用户终端需要进行页面 重定向, 以获取到期望的页面。
具体地说, 用户终端通过无线接口向 WAP网关发起页面请求, 该请求中携 带该页面在服务器 A时的 URL信息。 WAP网关根据该 URL信息从 SP的服务 器 A中获取到该 URL信息所对应的页面, 并直接将该页面返回给该用户终端。 由于用户终端期望的页面已从服务器 A中更换到了服务器 B, 因此该用户终端 从服务器 A中获取到的页面内包含了重定向信息, 要求该用户终端从服务器 B 中重新获取。 该用户终端根据该重定向信息, 进行页面重定向, 进而获取到所 期望的页面。
然而, 本发明的发明人发现, 根据目前现有的技术, 用户终端从发起请求 到获取最终页面的时延较长。 这是因为, 用户终端访问的页面 4艮有可能存在多 次重定向的情况, 也就是说, 在用户终端和 SP之间需要发生多次重定向交互操 作, 而用户终端与 WAP网关之间的无线接口传输需要较长的时延, 因此用户终 端和 SP之间的多次重定向,将导致用户终端从发起请求到获取最终页面的时延 较长。
通过 CDS软件查看, 用户终端获取到最终页面的时延与重定向次数有关, 重定向次数越多时延则越长。 比如说, 用户终端从请求 "房产汽车 *百姓坛" 到 获取到该页面的总时长为 8.3S , 其中重定向四次耗时 5S, 每次重定向大概耗时 1S左右; 显示 "房产汽车 *百姓坛" 页面内容耗时 3S, 由此可见, 多次重定向 的操作为影响页面刷新变动的主要原因。 发明内容
本发明实施方式要解决的主要技术问题是提供一种页面重定向方法及无线 应用协议网关, 使得终端获取页面的时延得以减少。
为解决上述技术问题, 本发明的实施方式提供了一种页面重定向方法, 包 括以下步骤:
无线应用协议 WAP网关在收到用户终端的页面请求时, 向服务提供商请求 所述用户终端所请求的页面;
如果所述服务提供商返回的页面符合页面重定向条件, 则所述 WAP网关进 行页面重定向, 并将重定向后得到的页面返回给所述用户终端。
本发明的实施方式还提供了一种无线应用协议网关, 包括:
请求模块, 用于在收到用户终端的页面请求时, 向服务提供商请求该用户 终端所请求的页面并接收该服务提供商返回的页面;
第一判断模块, 用于在所述请求模块收到所述服务提供商返回的页面后, 判断所述服务提供商返回的页面是否符合页面重定向条件;
重定向模块, 用于在所述第一判断模块判定所述服务提供商返回的页面符 合页面重定向条件时, 进行页面重定向;
发送模块, 用于将所述重定向模块重定向后得到的页面返回给所述用户终 端。
WAP 网关在收到用户终端的页面请求时, 向 SP请求该用户终端所请求的 页面, 如果该 SP返回的页面符合页面重定向条件, 则该 WAP网关代替用户终 端进行页面重定向, 并将重定向后得到的页面返回给该用户终端。 由于在用户 终端所请求的页面需要重定向时, 由 WAP网关代替用户终端进行页面重定向, 而非由用户终端发起页面重定向,减少了 WAP网关与用户终端之间的空口交互, 从而可减少终端获取页面的时延, 进而提高了用户满意度, 提升了页面刷新的 效率。 而且, 由于用户终端发起的页面重定向需要使用到无线网络带宽, 并且 需要用户终端具备页面重定向的功能, 因此由 WAP网关代替用户终端进行页面 重定向, 还可以降低无线网络带宽的使用, 进而降低移动综合采购成本, 并且 降低对用户终端的依赖, 减少了用户投诉。 附图说明 例或现有技术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面描述 中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付 出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明实施例中页面重定向方法的流程示意图;
图 2是本发明实施例中页面重定向方法的一个具体流程示意图;
图 3是本发明实施例中页面重定向方法的一个具体流程示意图;
图 4是本发明实施例中页面重定向方法的一个具体流程示意图;
图 5是本发明实施例中页面重定向方法的一个具体流程示意图;
图 6是本发明实施例中页面重定向方法的一个具体流程示意图;
图 7是本发明实施例中 WAP网关的一个具体组成结构示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明 的实施方式作进一步地详细描述。
如图 1 所示, 为本发明实施例中页面重定向方法的流程示意图, 在本实施 方式中, 当 WAP网关在收到用户终端的页面请求时, 向 SP请求该用户终端所 请求的页面。 如果 SP返回的页面符合页面重定向条件, 则该 WAP网关代替该 用户终端进行页面重定向, 并将重定向后得到的页面返回给该用户终端。
在步骤 110中, WAP网关接收来自用户终端的页面请求, 并根据该请求向 SP请求该用户终端所请求的页面。
具体地说, 当用户终端需要访问某个页面时, 通过无线接口向 WAP网关发 送该页面的页面请求。 WAP网关在收到该页面请求后,根据该请求中携带的 URL 信息, 向 SP请求该用户终端所请求的页面。
在步骤 120中, WAP网关判断 SP返回的页面是否符合页面重定向条件, 如果符合页面重定向条件, 则进入步骤 130; 如果不符合页面重定向条件, 则进 入步骤 140。
具体地说, 当 WAP网关根据用户终端的页面请求中携带的 URL信息, 向 SP请求页面后, SP会向该 WAP网关返回与该 URL信息相对应的页面。 WAP 网关对 SP返回的页面进行解析, 如果 SP返回的页面符合页面重定向条件, 则 说明该用户终端期望获取的页面已不在原先的服务器中, 需要进行页面重定向; 如果 SP返回的页面不符合页面重定向条件, 则说明该用户终端期望获取的页面 仍在原先的服务器中, SP返回的页面就是该用户终端所期望的页面。 其中, 页 面重定向条件为页面中包含表示需进行重定向操作的重定向系列状态码, 或者 页面中包含 "onenterforward" 标记。 由于对于一般页面而言, 如果状态码为重 定向系列状态码, 则说明该页面需要进行重定向; 对于无线标记语言 (Wireless Markup Language, 筒称 "WML" )页面而言, 如果页面中包含 "onenterforward" 标记, 则说明该页面需要进行重定向。 因此, 本实施方式的重定向判断条件, 不仅使用于一般页面, 还适用于 WML页面。
比如说, SP返回的页面中包含 300、 301、 302、 303、 305、 307等重定向系 列状态码, 或者 SP返回的页面为 WML页面, 页面中包含 "onenterforward" 标 记。 此时, WAP网关将判定 SP返回的页面符合页面重定向条件, 需要进行页 面重定向, 即进入步骤 130。 如果 SP返回的页面为 WML页面, 但页面中不包 含 "onenterforward" 标记, 或者 SP返回的页面不为 WML页面, 并且页面中不 包含 300、 301、 302、 303、 305、 307等重定向系列状态码, 此时, WAP网关将 判定 SP返回的页面不符合页面重定向条件, 无需进行页面重定向, 即进入步骤 在步骤 130中, 当 WAP网关将判定 SP返回的页面符合页面重定向条件, 需要进行页面重定向后, WAP网关代替用户终端进行页面重定向, 并将重定向 后得到的页面返回给该用户终端。 该 WAP网关可根据 SP返回的符合页面重定 向条件的页面中, 携带的重定向信息进行页面重定向, 并将重定向后得到的页 面返回给该用户终端。
由于在用户终端所请求的页面需要重定向时, 由 WAP网关代替用户终端进 行页面重定向, 而非由用户终端发起页面重定向, 减少了 WAP网关与用户终端 之间的空口交互, 从而可减少终端获取页面的时延, 进而提高了用户满意度, 提升了页面刷新的效率。 而且, 由于用户终端发起的页面重定向需要使用到无 线网络带宽, 并且需要用户终端具备页面重定向的功能, 因此由 WAP网关代替 用户终端进行页面重定向, 还可以降低无线网络带宽的使用, 进而降低移动综 合采购成本, 并且降低对用户终端的依赖, 减少了用户投诉。
在步骤 140中, 当 WAP网关将判定 SP返回的页面不符合页面重定向条件, 无需进行页面重定向后, 直接将 SP返回的页面发送给用户终端, 使该用户终端 获取到所期望的页面。
如图 2所示, 为本发明实施例中页面重定向方法的一个具体流程示意图, 本实施例是如图 1所示的实施例的具体化, 在本实施例中, WAP网关还需保存 SP返回的页面中的 "Cookie" 信息。
在步骤 201 中, 用户终端向 WAP 网关发起页面请求, 请求访问的页面的 URL为 http:〃 wap.montemet.com/redirect.wml。
在步骤 202中, WAP网关在收到该页面请求后,根据该请求中的 URL信息, 可获知该用户终端所请求的页面在梦网中, 因此将该请求转发到梦网, 请求获 取该用户终端所请求的页面。
在步骤 203 中, 梦网返回跳转页面, 且设置 Cookie, uid=8888。 由于梦网 在收到 WAP网关转发的页面请求后, 可获知该用户终端所期望获取的页面已更 改到新浪网中, 因此梦网向 WAP网关返回跳转页面, 该跳转页面包含需重定向 到 http://wap.sina.eom/2.wml的信息,并且,包含该跳转页面的 uid=8888的 Cookie 信息。
在步骤 204中, WAP网关在收到该跳转页面后, 处理该跳转页面。 具体地 说, 该 WAP网关在收到该跳转页面后, 通过对该跳转页面的解析, 可获知该页 面符合页面重定向条件,需要重定向到 http://wap.sina.eom/2.wml。因此,该 WAP 网关代替用户终端进行页面重定向, 重定向到 http://wap.sina.eom/2.wml。 另夕卜, 由于该跳转页面中包含 uid=8888 的 Cookie信息, 因此该 WAP 网关还需对该 Cookie信息进行保存。
在步骤 205 中, 新浪网向 WAP 网关返回 WML 页面, 且设置 Cookie, uid=6666。
在步骤 206中, WAP网关在收到新浪网返回的 WML页面后, 将该页面返 回给用户终端。 并且, 保存该 WML页面中的 uid=6666的 Cookie信息。 由于终 端类型为 WAP2.0的用户终端支持 WML页面, 而终端类型为 WAPl.x的用户终 端不支持 WML页面,因此如果发起页面请求的用户终端为 WAPl.x类型的用户 终端, WAP网关可以选择不向该用户终端下发 WML页面。
由于在本实施方式中, WAP网关对 SP返回的页面中的 "Cookie"信息进行 了保存, 因此当该 WAP网关在需要向 SP请求已获取过的页面时, 可以根据保 存的 "Cookie" 信息, 成功获取到所请求的页面。 具体流程将通过下面的步骤 207至步骤 214进行说明。
在步骤 207 中, 用户终端向 WAP 网关发起页面请求, 请求访问的页面的 URL为 http:〃 wap.montemet.eom/news/2.wml。
在步骤 208中, WAP网关在收到该页面请求后,根据该请求中的 URL信息, 可获知该用户终端所请求的页面在梦网中, 因此将该请求转发到梦网, 请求获 取该用户终端所请求的页面。 由于该 WAP网关还可根据请求中的 URL信息, 查询到保存的 uid=8888的 Cookie信息, 因此该 WAP网关转发该页面请求的同 时, 还需将 uid=8888的 Cookie信息发送给梦网。
在步骤 209中,梦网在 WAP网关转发的请求中发现正确的 Cookie:uid=8888, 访问成功, 向 WAP网关返回 WML页面。
在步骤 210中, WAP网关将梦网返回的 WML页面下发给用户终端。
在步骤 211 中, 用户终端向 WAP 网关发起页面请求, 请求访问的页面的 URL为 http:〃 wap.sina.eom/2.wml。
在步骤 212中, WAP网关在收到该页面请求后,根据该请求中的 URL信息, 可获知该用户终端所请求的页面在新浪网中, 因此将该请求转发到新浪网, 请 求获取该用户终端所请求的页面。 由于该 WAP网关还可根据请求中的 URL信 息, 查询到保存的 uid=6666的 Cookie信息, 因此该 WAP网关转发该页面请求 的同时, 还需将 uid=6666的 Cookie信息发送给新浪网。
在步骤 213 中, 新浪网在 WAP 网关转发的请求中发现正确的
Cookie:uid=6666 , 访问成功, 向 WAP网关返回 WML页面。
在步骤 214中, WAP网关将新浪网返回的 WML页面下发给用户终端。 不难发现, 步骤 207 至步骤 210 为用 户 终端访问 URL 为 http://wap.monternet.eom/news/2.wml的流程; 步骤 211至步骤 214为用户终端访 问 URL为 http://wap.sina.eom/2.wml的流程。这两个流程之间并无明确的先后关 系, WAP网关分别通过保存的 Cookie信息从 SP处成功获取, 并下发给用户终 端。
由于 HTTP协议是无状态的协议, 因此 Cookie信息相当于起一个会话状态 管理作用, 4艮多情况下 SP是根据 Cookie信息来判断用户的请求是否合法。 比 如说, 某个用户终端访问一个网站(如移动梦网), SP会首先为该用户终端设置 一个 Cookie,在 Cookie有效期内该用户终端访问该网站的其它目录或文件, 都 需要携带该 Cookie, 否则页面将一直停留在首页, 无法进入下一级目录。 而且, 某些网站可以针对某个用户终端设置一些个性化页面 (如语言设置等), 如果用 户终端在 Cookie有效期内需要再次访问该网站时, 就可以根据 Cookie信息, 避 免对该网页的重新设置。
另外, 某些网站可能还需要用户在访问时输入帐号、 密码等, 输好后, 网 站会为该用户设置一个 Cookie, 以便在 Cookie有效期内再访问该网站时, 就不 用重新输入帐号、 密码等。
在本实施方式中, 由 WAP 网关处理 Cookie信息, 以免用户终端误以为 http://wap.monternet.com/redirect.wml ] Cookie为 UID=6666 ( UID=6666实际上 是 http:// wap.sina.com的 Cookie ), 从而造成访问的错误。
而且, 由于 WAP网关保存的网页 cookie信息, 是针对一个终端的, 因此在 实现上有 4艮多方式可以解决, 比如将 Cookie信息保存在内存或者数据库中等。
如图 3所示, 为本发明实施例中页面重定向方法的一个具体流程示意图, 本实施例是如图 1所示的实施例的具体化, 在本实施例中, WAP网关还需将重 定向后得到的页面中的相对 URL信息更改为绝对 URL信息。
在步骤 301 中, 用户终端向 WAP 网关发起页面请求, 请求访问的页面的 URL为 http:〃 wap.montemet.com/redirect.wml。
在步骤 302中, WAP网关在收到该页面请求后,根据该请求中的 URL信息, 可获知该用户终端所请求的页面在梦网中, 因此将该请求转发到梦网, 请求获 取该用户终端所请求的页面。
在步骤 303中, 梦网返回跳转页面。 由于梦网在收到 WAP网关转发的页面 请求后, 可获知该用户终端所期望获取的页面已更改到新浪网中, 因此梦网向 WAP 网 关 返 回 跳 转 页 面 , 该 跳 转 页 面 包 含 需 重 定 向 到 http://wap.sina.com/sports.wml ^jt^。
在步骤 304中, WAP网关在收到该跳转页面后, 处理该跳转页面。 具体地 说, 该 WAP网关在收到该跳转页面后, 通过对该跳转页面的解析, 可获知该页 面符合页面重定向条件, 需要重定向到 http://wap.sina.com/sports.wml。 因此, 该 WAP 网 关 代 替 用 户 终 端 进 行 页 面 重 定 向 , 重 定 向 到 http:〃 wap.sina.com/sports.wml。
在步骤 305中, 新浪网向 WAP网关返回 WML页面。
在步骤 306中, WAP网关判断新浪网返回的 WML页面中, 是否包含有相 对 URL信息, 如果有, 则将该对 URL信息更改为绝对 URL信息。 在本实施方 式中, 新浪网返回的 WML页面中包含有相对 URL信息: . basketball. wml, 因 此 WAP网关需将该对 URL信息更改为绝对 URL信息, 即将. basketball. wml更 改为 http:〃 wap.sina.com/ basketball. wml。 并将 URL信息更改后的 WML页面发 送给用户终端。
在步骤 307中, 用户终端访问绝对 URL指定的页面, 也就是说, 用户终端 向 WAP 网关发起页面请求, 请求访问的页面的 URL 为 http:〃 wap.sina.com/ basketball, wml。
在步骤 308中, WAP网关在收到该页面请求后,根据该请求中的 URL信息, 可获知该用户终端所请求的页面在新浪网中, 因此将该请求转发到新浪网, 请 求获取该用户终端所请求的页面。
在步骤 309中, 新浪网向 WAP网关返回所请求的 WML页面。
在步骤 310中, WAP网关在收到新浪网返回的 WML页面后, 将该页面返 回给用户终端。
由于重定向后返回的页面中存在一些相对 URL的情况, 因此, 由 WAP网 关代为重定向后需要将相对 URL信息修改为绝对 URL信息, 以保证后续用户 终端的访问可以到达准确的页面。
如图 4所示, 为本发明实施例中页面重定向方法的一个具体流程示意图, 本实施例是在如图 1 所示的实施例的基础上, 进一步增加了用户终端所请求的 页面是否为下载页面或配置为无需重定向页面的判断。
步骤 410和步骤 420分别与步骤 110和步骤 120相同, 在此不再赘述。 如果在步骤 420中, WAP网关判定 SP返回的页面符合页面重定向条件, 则进入步骤 430; 如果不符合页面重定向条件, 则进入步骤 460。
在步骤 430中, WAP网关判断用户终端请求的页面是否为下载页面或配置 为无需重定向页面, 如果是下载页面或是配置为无需重定向页面, 则进入步骤 440, 如果不是下载页面或不是配置为无需重定向页面, 则进入步骤 450。
具体地说, 当 SP向 WAP网关返回符合页面重定向条件的页面后, WAP网 关可根据该页面中的重定向信息, 判断用户终端请求的页面是否为下载页面或 配置为无需重定向页面。 比如说, SP向 WAP网关返回的页面中, 携带重定向 到 http://wap.sina.eom/2.wml的信息, WAP网关就可根据重定向的 URL的后缀 文件名判断用户终端请求的页面是否为下载页面或配置为无需重定向页面。 如 果判定为是下载页面或是配置为无需重定向页面, 则进入步骤 440, 将 SP返回 的页面直接发送给用户终端, 由用户终端进行页面重定向; 如果判定为不是下 载页面或不是配置为无需重定向页面, 则进入步骤 450, 由 WAP网关代替用户 终端进行页面重定向, 并将重定向后得到的页面返回给该用户终端, 步骤 450 与步骤 130完全相同。
如果在步骤 420中, WAP网关判定 SP返回的页面不符合页面重定向条件, 则进入步骤 460, 直接将 SP返回的页面发送给用户终端, 使该用户终端获取到 所期望的页面, 本步骤与步骤 140完全相同。
由于重定向后得到的页面的 URL与用户终端发起页面请求时使用的 URL 不一致, 因此在本实施方式中, WAP网关需要判断用户终端请求的页面是否为 下载页面或配置为无需重定向页面, 使得当用户终端请求的页面为下载页面或 是配置为无需重定向页面时, 能够避免用户终端无法识别该文件的问题。
另外, 值得一提的是, 为了提高 WAP网关对用户终端请求的页面是否为下 载页面或配置为无需重定向页面的判断效率,可以在 WAP网关中设置一个 URL 列表的黑白名单, 白名单中的 URL为需要由 WAP网关代为重定向的页面, 黑 名单中的 URL为禁止 WAP网关代为重定向的页面, 支持模糊匹配; 或者, 在 WAP网关中设置一个重定向 URL的后缀文件名黑白名单,白名单中的后缀文件 名为需要由 WAP 网关代为重定向的页面, 黑名单中的后缀文件名为禁止 WAP 网关代为重定向的页面, 采用完全匹配。
如图 5 所示, 为本发明实施例中页面重定向方法的一个具体流程示意图, 本实施例是在如图 4所示的实施例的基础上, 进一步解决了重定向页面中定时 器的问题。
步骤 510至步骤 540与步骤 410至步骤 440完全相同, 在此不再赘述。 在步骤 550中, WAP网关判断用户终端请求的页面是否包含定时器。 也就 是说, 当 WAP网关判定用户终端请求的页面不是下载页面或不是配置为无需重 定向页面后, 还需进一步判断该页面是否包含定时器。 如果判定为包含定时器, 则进入步骤 560; 如果判定为不包含定时器, 则进入步骤 570。
在步骤 560中, WAP网关启动定时器, 等待超时。 这是因为, 如果用户终 端所请求的页面中包含定时器, 则说明该用户终端所请求的页面需要等待一定 时间后才能进行重定向, 因此需要 WAP网关在等到定时器超时时, 再开始进行 页面重定向, 以保证能够成功获取到该用户终端所请求的页面。
在定时器超时或 WAP网关判定用户终端所请求的页面中不包含定时器后, 进入步骤 570, 由 WAP网关代替用户终端进行页面重定向, 并将重定向后得到 的页面返回给该用户终端, 本步骤与步骤 450完全相同。
如果在步骤 520中, WAP网关判定 SP返回的页面不符合页面重定向条件, 则进入步骤 580, 直接将 SP返回的页面发送给用户终端, 使该用户终端获取到 所期望的页面, 本步骤与步骤 460完全相同。
本发明的第六实施方式涉及一种页面重定向方法, 本实施方式与第四实施 方式大致相同, 其区别在于, 在第四实施方式中, WAP网关在代替用户终端进 行页面重定向之前, 先判断用户终端请求的页面是否为下载页面或配置为无需 重定向页面, 如果判定为不是下载页面或不是配置为无需重定向页面, 则代替 用户终端进行页面重定向; 如果判定为是下载页面或是配置为无需重定向页面, 则直接将符合页面重定向条件的页面发送给该用户终端, 由用户自行进行页面 重定向, 以避免用户终端无法识别下载文件的问题。 而在本实施方式中, 在将 重定向后得到的页面返回给用户终端之前, 进行是否为下载页面或配置为无需 重定向页面的判断, 如果判定为不是下载页面或不是配置为无需重定向页面, 则将重定向后得到的页面返回给用户终端; 如果判定为是下载页面或是配置为 无需重定向页面, 则将符合页面重定向条件的页面, 发送给用户终端, 由用户 自行进行页面重定向, 以避免用户终端无法识别下载文件的问题。
下面通过一个具体的例子, 对本实施方式进行说明。
如图 6所示, 为本发明实施例中页面重定向方法的一个具体流程示意图。 在步骤 601 中, 用户终端向 WAP 网关发起页面请求, 请求访问的页面的 URL为 http://kjava.montemet.com/download.wml。
在步骤 602中, WAP网关在收到该页面请求后,根据该请求中的 URL信息, 可获知该用户终端所请求的页面在梦网中, 因此将该请求转发到梦网, 请求获 取该用户终端所请求的页面。
在步骤 603 中, 梦网返回跳转页面, 在该跳转页面中包括需要下载的文件 链接。 由于梦网在收到 WAP网关转发的页面请求后, 可获知该用户终端所期望 获取的页面已更改到新浪网中, 因此梦网向 WAP网关返回跳转页面。
在步骤 604中, WAP网关在收到该跳转页面后, 处理该跳转页面。 具体地 说, 该 WAP网关在收到该跳转页面后, 通过对该跳转页面的解析, 可获知该页 面符合页面重定向条件, 需要重定向到 http://wap.sina.com/Ljar。 因此, 该 WAP 网关代替用户终端进行页面重定向, 重定向到 http://wap.sina.eom/l.jar。
在步骤 605中, 新浪网向 WAP网关返回该 WAP网关重定向的页面。
在步骤 606中, WAP网关在收到新浪网返回的页面后, 判断该页面是否为 下载页面或配置为无需重定向页面。该 WAP网关可 ^据该页面的多媒体因特网 邮件扩展(Multimedia Internet Mail Extend, 筒称 "MIME" )类型, 判断该页面 是否为下载页面或配置为无需重定向页面。 如果判定结果为不是下载页面或不 是配置为无需重定向页面, 则将该重定向后得到的页面返回给用户终端, 结束 流程;如果判定结果为是下载页面或是配置为无需重定向页面,则进入步骤 607。 本实施方式中的判定结果为是下载页面或是配置为无需重定向页面, 因此进入 步骤 607。
在步骤 607中, WAP网关保存从新浪网处获取的页面, 并将从梦网处获取 的跳转页面返回给用户终端。 在步骤 608 中, 用户终端收到该跳转页面后, 通过对该跳转页面的解析, 可获知该页面符合页面重定向条件, 需要重定向到 http://wap.sina.com/Ljar。 因 此, 该用户终端进行页面重定向, 重定向到 http://wap.sina.eom/l.jar。
在步骤 609中, WAP网关在收到用户终端的页面重定向请求后, 根据该请 求中的 URL可判定本 WAP网关内已有该页面, 因此可直接将该页面返回给用 户终端。
其中, 在本发明实施例中的页面重定向方法中, WAP网关可以进行多次的 页面重定向, 即在第一次重定向后获得页面还需要进行第二次甚至更多次的重 定向, 才能最终获得需要的页面。 则在所述 WAP网关首次进行页面重定向之后 还可以包括步骤:
判断所述 WAP 网关进行页面重定向后获得的页面是否符合页面重定向条 件, 如果判断为不符合, 则所述 WAP网关将所述不符合页面重定向条件的页面 发送给所述用户终端; 如果判断为符合, 则 WAP网关继续进行页面重定向, 直 至当进行页面重定向后获得的页面不符合页面重定向条件时, 将所述不符合页 面重定向条件的页面发送给所述用户终端。
如图 7所示, 为本发明实施例中 WAP网关的一个具体组成结构示意图, 该 WAP 网关包括: 请求模块, 用于在收到用户终端的页面请求时, 向 SP请求该 用户终端所请求的页面并接收该 SP返回的页面; 第一判断模块, 用于在该请求 模块收到 SP返回的页面后, 判断 SP返回的页面是否符合页面重定向条件; 重 定向模块, 用于在该第一判断模块判定 SP返回的页面符合页面重定向条件时, 代替用户终端进行页面重定向; 发送模块, 用于将该重定向模块重定向后得到 的页面返回给用户终端。
其中, 页面重定向条件为页面中包含表示需进行重定向操作的重定向系列 状态码, 或者页面中包含 "onenterforward" 标记, 使得本发明的实施方式不仅 使用于一般页面, 还适用于 WML页面。
本实施方式中的 WAP网关还可以包括存储模块, 用于保存 SP返回的页面 中的 "Cookie" 信息; 请求模块需要向 SP请求已获取过的页面时, 根据该存储 模块保存的 "Cookie" 信息向该服务提供商请求, 以便能够成功获取到该页面。
本实施方式中的 WAP网关还可以包括 URL信息更改模块, 用于在重定向 模块重定向后得到的页面中, 包含相对 URL信息时, 将该相对 URL信息更改 为绝对 URL信息。 发送模块将 URL信息更改后的页面返回给用户终端, 以免 该用户终端在对重定向后的页面进一步访问时, 可能导致的访问失败问题。
本实施方式中的 WAP网关还可以包括第二判断模块, 用于判断用户终端请 求的页面是否为下载页面或配置为无需重定向页面。 另外, 发送模块还用于将 符合页面重定向条件的页面发送给用户终端。
具体地说, 该第二判断模块在第一判断模块判定页面符合页面重定向条件 时, 判断该用户终端请求的页面是否为下载页面或配置为无需重定向页面, 并 在判定结果为不是下载页面或不是配置为无需重定向页面时, 触发重定向模块; 在判定结果为是下载页面或是配置为无需重定向页面时, 触发发送模块将符合 页面重定向条件的页面发送给用户终端。 或者, 该第二判断模块在重定向模块 重定向后, 判断用户终端请求的页面是否为下载页面或配置为无需重定向页面, 并在判定结果为不是下载页面或不是配置为无需重定向页面时, 触发发送模块 将重定向后得到的页面返回给用户终端; 在判定结果为是下载页面或是配置为 无需重定向页面时, 触发发送模块将符合页面重定向条件的页面发送给用户终 端。
由于重定向后得到的页面的 URL与用户终端发起页面请求时使用的 URL 不一致, 因此 WAP网关需要判断用户终端请求的页面是否为下载页面或配置为 无需重定向页面, 使得当用户终端请求的页面为下载页面或是配置为无需重定 向页面时, 能够避免用户终端无法识别该文件的问题。
综上所述, 在本发明的实施方式中, WAP网关在收到用户终端的页面请求 时, 向 SP请求该用户终端所请求的页面, 如果该 SP返回的页面符合页面重定 向条件, 则该 WAP网关代替用户终端进行页面重定向, 并将重定向后得到的页 面返回给该用户终端。 由于在用户终端所请求的页面需要重定向时, 由 WAP网 关代替用户终端进行页面重定向,而非由用户终端发起页面重定向,减少了 WAP 网关与用户终端之间的空口交互, 从而可减少终端获取页面的时延, 进而提高 了用户满意度, 提升了页面刷新的效率。 而且, 由于用户终端发起的页面重定 向需要使用到无线网络带宽, 并且需要用户终端具备页面重定向的功能, 因此 由 WAP网关代替用户终端进行页面重定向, 还可以降低无线网络带宽的使用, 进而降低移动综合采购成本, 并且降低对用户终端的依赖, 减少了用户投诉。
页面重定向条件为页面中包含表示需进行重定向操作的重定向系列状态 码, 或者页面中包含 "onenterforward" 标记, 使得本发明的实施方式不仅使用 于一般页面, 还适用于 WML页面。
WAP网关通过对 SP返回的页面中的 "Cookie"信息进行保存, 以便在需要 向 SP请求已获取过的页面时, 能够成功获取到。
如果 WAP 网关代替用户终端进行页面重定向后, 得到的页面中包含相对 URL信息, 则将该相对 URL信息更改为绝对 URL信息后, 发送给用户终端, 以免该用户终端在对重定向后的页面进一步访问时, 可能导致的访问失败问题。
由于重定向后得到的页面的 URL与用户终端发起页面请求时使用的 URL 不一致, 因此 WAP网关需要判断用户终端请求的页面是否为下载页面或配置为 无需重定向页面, 使得当用户终端请求的页面为下载页面或是配置为无需重定 向页面时, 能够避免用户终端无法识别该文件的问题。
虽然通过参照本发明的某些优选实施方式, 已经对本发明进行了图示和描 述, 但本领域的普通技术人员应该明白, 可以在形式上和细节上对其作各种改 变, 而不偏离本发明的精神和范围。

Claims

权 利 要 求
1. 一种页面重定向方法, 其特征在于, 包括:
无线应用协议 WAP网关在收到用户终端的页面请求时, 向服务提供商请求 所述用户终端所请求的页面;
如果所述服务提供商返回的页面符合页面重定向条件, 则所述 WAP网关进 行页面重定向, 并将重定向后得到的页面返回给所述用户终端。
2. 根据权利要求 1所述的页面重定向方法, 其特征在于, 所述页面重定向 条件为页面中包含表示需进行重定向操作的重定向系列状态码, 或者页面中包 含 "onenterforward" 标记。
3. 根据权利要求 1所述的页面重定向方法, 其特征在于, 还包括: 当所述 WAP网关需要向所述服务提供商请求已获取过的页面时,根据保存 的 "Cookie" 信息向该服务提供商请求。
4. 根据权利要求 1所述的页面重定向方法, 其特征在于, 所述将重定向后 得到的页面返回给所述用户终端包括:
判断所述重定向后得到的页面中, 是否包含相对统一资源定位 URL信息, 如果包含相对 URL信息, 则将该相对 URL信息更改为绝对 URL信息;
将所述包括绝对 URL信息的页面返回给所述用户终端。
5. 根据权利要求 1所述的页面重定向方法, 其特征在于, 还包括: 如果所述服务提供商返回的页面符合页面重定向条件, 判断所述用户终端 所请求的页面是否为下载页面或配置为无需重定向页面, 如果判定为不是下载 页面或不是配置为无需重定向页面, 则执行所述 WAP网关进行页面重定向, 如 果判定为是下载页面或是配置为无需重定向页面, 则直接将所述符合页面重定 向条件的页面发送给所述用户终端。
6. 根据权利要求 5所述的页面重定向方法, 其特征在于, 所述判断所述用 户终端所请求的页面是否为下载页面或配置为无需重定向页面的方式如下: 根据所述用户终端所请求的页面的后缀名判断该页面是否为下载页面或配 置为无需重定向页面。
7. 根据权利要求 1所述的页面重定向方法, 其特征在于, 还包括: 所述 WAP网关进行页面重定向, 判断所述重定向获得的用户终端所请求的 页面是否为下载页面或配置为无需重定向页面, 如果判定为不是下载页面或不 是配置为无需重定向页面, 则执行所述将重定向后得到的页面返回给所述用户 终端; 如果判定为是下载页面或是配置为无需重定向页面, 则将所述服务提供 商返回的符合页面重定向条件的页面, 发送给所述用户终端。
8. 根据权利要求 7所述的页面重定向方法, 其特征在于, 所述判断所述用 户终端请求的页面是否为下载页面或配置为无需重定向页面的方式包括:
根据重定向后得到的页面的多媒体因特网邮件扩展类型, 判断所述用户终 端请求的页面是否为下载页面或配置为无需重定向页面。
9. 根据权利要求 1至 4中任一项所述的页面重定向方法, 其特征在于, 所 述如果所述服务提供商返回的页面符合页面重定向条件, 则所述 WAP网关进行 页面重定向, 并将重定向后得到的页面返回给所述用户终端包括:
如果所述服务提供商返回的页面符合页面重定向条件, 则判断所述符合页 面重定向条件的页面中是否包含定时器, 如果包含定时器, 则在定时器超时时, 则所述 WAP网关进行页面重定向, 并将重定向后得到的页面返回给所述用户终 端。
10. 根据权利要求 1至 4中任一项所述的页面重定向方法, 其特征在于, 在所述 WAP网关进行页面重定向之后包括:
判断所述 WAP 网关进行页面重定向后获得的页面是否符合页面重定向条 件, 如果判断为不符合, 则所述 WAP网关将所述不符合页面重定向条件的页面 发送给所述用户终端; 如果判断为符合, 则 WAP网关继续进行页面重定向, 直 至当进行页面重定向后获得的页面不符合页面重定向条件时, 将所述不符合页 面重定向条件的页面发送给所述用户终端。
11. 一种无线应用协议网关, 其特征在于, 包括:
请求模块, 用于在收到用户终端的页面请求时, 向服务提供商请求该用户 终端所请求的页面并接收该服务提供商返回的页面;
第一判断模块, 用于在所述请求模块收到所述服务提供商返回的页面后, 判断所述服务提供商返回的页面是否符合页面重定向条件;
重定向模块, 用于在所述第一判断模块判定所述服务提供商返回的页面符 合页面重定向条件时, 进行页面重定向;
发送模块, 用于将所述重定向模块重定向后得到的页面返回给所述用户终 端。
12. 根据权利要求 11所述的无线应用协议网关, 其特征在于, 所述页面重 定向条件为页面中包含表示需进行重定向操作的重定向系列状态码, 或者页面 中包含 " onenterf orward" 标记。
13. 根据权利要求 11所述的无线应用协议网关, 其特征在于, 还包括: 存储模块, 用于保存所述服务提供商返回的页面中的 "Cookie" 信息; 所述请求模块需要向所述服务提供商请求已获取过的页面时, 根据所述存 储模块保存的 "Cookie" 信息向该服务提供商请求。
14. 根据权利要求 11所述的无线应用协议网关, 其特征在于, 还包括: URL信息更改模块, 用于在所述重定向模块重定向后得到的页面中, 包含 相对 URL信息时, 将该相对 URL信息更改为绝对 URL信息;
所述发送模块将 URL信息更改后的页面返回给所述用户终端。
15. 根据权利要求 11所述的无线应用协议网关, 其特征在于, 还包括: 第二判断模块, 用于判断所述用户终端请求的页面是否为下载页面或配置 为无需重定向页面; 所述发送模块还用于将所述符合页面重定向条件的页面发送给所述用户终 端;
所述第二判断模块在所述第一判断模块判定页面符合页面重定向条件时, 判断所述用户终端请求的页面是否为下载页面或配置为无需重定向页面, 并在 判定为不是下载页面或不是配置为无需重定向页面时, 触发所述重定向模块; 在判定为是下载页面或是配置为无需重定向页面时, 触发所述发送模块将所述 符合页面重定向条件的页面发送给所述用户终端; 或者,
所述第二判断模块在所述重定向模块重定向后, 判断所述用户终端请求的 页面是否为下载页面或配置为无需重定向页面, 并在判定为不是下载页面或不 是配置为无需重定向页面时, 触发所述发送模块将重定向后得到的页面返回给 所述用户终端; 在判定为是下载页面或是配置为无需重定向页面时, 触发所述 发送模块将所述符合页面重定向条件的页面发送给所述用户终端。
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US8918476B2 (en) 2014-12-23
US20130124678A1 (en) 2013-05-16
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