CN105208074A - Path analysis method and device for asymmetric route based on Web server - Google Patents
Path analysis method and device for asymmetric route based on Web server Download PDFInfo
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- CN105208074A CN105208074A CN201510490721.XA CN201510490721A CN105208074A CN 105208074 A CN105208074 A CN 105208074A CN 201510490721 A CN201510490721 A CN 201510490721A CN 105208074 A CN105208074 A CN 105208074A
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- reverse proxy
- javaapplet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/20—Hop count for routing purposes, e.g. TTL
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
Abstract
The invention discloses a path analysis method and device for an asymmetric route based on a Web server, and relates to the field of Internet technology. The method comprises the following steps that when a client accesses the Web server, a Web reverse proxy sends an HTTP request to the Web server; after the Web server receives the request, a response page in response to the HTTP request is sent to the Web reverse proxy; the Web reverse proxy sends a path analysis program, used for analyzing a path from the client to the server, to the client via the response page; the client runs the path analysis program to analyze the path from the client to the server and submits an analysis result to the Web reverse proxy; and in the period that the client accesses the Web server, the path analysis device at the Web server end analyzes the path from the client to the server.
Description
Technical field
The present invention relates to Internet technical field, particularly a kind of path analysis method of asymmetric route of sing on web server and device.
Background technology
HTTP (HyperTextTransferProtocol, the HTTP) request of the initiation of client will finally arrive Web server end by several routing node.Each routing node is an independently routing device, and it determines the address of down hop route by routing policy or agreement.Example as shown in Figure 1, can be described as client to the routed path of Web server end is: A->B->C->D-Gre atT.GreaT.GTE.The HTTP request of client is all transmitted by this path with response.
The path of route by IP (InternetProtocol, the Internet protocol) address of each routing node as mark.The path of route frequently may change in the situation such as virtual forwarding strategy along with in the change of the change of certain router load, network topology or load balancing, multipath dynamic routing, cloud computing.
Because packet is after the end-to-end end of transmission, lost the routing information (holding the packet IP address seen to be Web client IP and Web service end IP) of route, so the transmission path of this connection needs to be undertaken analyzing by certain means just can draw.
The meaning of DPA (DeepPathAnalyze, depth pathway analysis) is fault location to network service and investigation.Usually, the provider of network service, can the data message that connects of the network of monitoring client opposite end in order to improve network service quality, thus statistics draw handle up, postpone, the data such as packet loss, and to be applied in the management work of network service.By obtaining DPA path data, can the fault point (as certain routing node) of fixer network service end opposite end, can Calculation bottleneck bandwidth, or find the policing issue etc. of Border gateway protocol (BGP (BorderGatewayProtocol, Border Gateway Protocol)).
According to the TTL (TimeToLive of IP message, time-to-live) characteristic, IP message is often through a routing node, ttl value is subtracted 1, when ttl value is 0, router thinks that this IP message cannot arrive at the destination, and router abandons this IP message, and reply ICMP (InternetControlMessageProtocol Internet Control Message agreement) and notify message, to inform source IP packet time-out.
Sketch according to above-mentioned principle, the process of path discovery can be sketched and be: the IP message sending specific ttl value, and waits for ICMP receipt.As shown in Figure 2, first path analysis equipment send the IP message that ttl value is 1, and when this packet arrives routing node E, it is 0 that ttl value subtracts 1, and now this node abandons this IP message, and reply ICMP notice, and the source IP of this icmp packet is the node IP of route E.Thus, path analysis function has just found the first path of jumping of its route.By that analogy, send TTL be 2 IP message can analyze the address drawing the second jumping, i.e. the node IP of route D.Increase the ttl value sending message, until it arrives destination address (Web client), just can draw out the path of whole transmitting procedure.Traceroute command program is had to achieve above-mentioned path discovery function in Linux type operating system.
JavaScript is a kind of based on object and event driven client-side scripting language.Also be a kind of script being widely used in client Web exploitation simultaneously, be commonly used to add dynamic function to HTML (HypertextMarkupLanguage, HTML) webpage, such as respond the various operations of user.It is a kind of dynamic, weak type, language based on prototype, built-in support class.
JavaApplet is the applet of writing with Java language, and they can be directly embedded in webpage HTML, and can produce special effect.When user accesses such webpage, the computer that Applet is downloaded to user performs, if client browser supports java, and user opens the restriction of associated safety rank, then javaapplet can true(-)running in client browser.
Relative to Web (client) agency service, reverse proxy refers in Web server end administration, provides the software (or software equipment) of agency service to arriving the data of WEB server.Current Web reverse proxy gateway application is extensive, perfect in shape and function, and has ripe open source software to support (as nginx).The main application of reverse proxy has: carry out data service agency, cache acceleration, load balancing, HTTP web hosting service, HTTP redirection service etc. for large concurrent connection.Described Web reverse proxy refers to the system or equipment being deployed as Web reverse proxy gateway, as shown in Figure 3.
In the Internet scene of reality, due to the extensive application of dynamic routing and load balancing etc., on routing mode, mostly take asymmetric route (asymmetricroute), namely client is different to the path of the route of client with server end to server end.As shown in Figure 4, in asymmetric route scene, be positioned at the path analysis function of server end, the path drawing server to client end can only be analyzed, and correctly cannot obtain the path of client to server.The path drawn in the current path analysis method of server end is F->E->D->C-Gre atT.GreaT.GTB-A, this path can only as the path of ServerToClient, and the path (A->B->E->F) of ClientToServer then cannot be analyzed and obtain.Because the transmitting procedure of IP message, only know the address of its down hop, and its reverse routing address cannot be obtained, and cannot utilize that the transmission principle of IP message is counter looks into routing address.As above scheme, suppose that the DPA sent by server end at present analyzes message and drawn out path F->E->, then continue to send the probe messages that TTL is 3, this message is routed to node D, but not Node B, so after D abandons this message and receipt ICMP notifies, the path that DPA draws out is F->E->D.So existing DPA technology is owing to cannot draw the path of asymmetric route, it causes very large puzzlement for the statistical analysis of performance function of carrying out at server end.And the technological means of current transport network layer cannot solve this problem.
Summary of the invention
The object of the present invention is to provide a kind of path analysis method and device of asymmetric route of sing on web server, to solve in prior art because DPA cannot draw the path of asymmetric route, cause the statistical analysis of performance function of carrying out at server end to cause the problem of very large puzzlement.
According to an aspect of the present invention, provide a kind of path analysis method of asymmetric route of sing on web server, comprise the following steps:
During client-access Web server, send HTTP request via Web reverse proxy to Web server;
After Web server receives described request, the response page of the described HTTP request of response is sent to described Web reverse proxy;
Described Web reverse proxy utilizes the described response page to send to described client by being used for carrying out the path analysis program of client to server path analysis;
Described client, by running described path analysis program, is analyzed the path of client to server, and analysis result is submitted to described Web reverse proxy;
During described client-access Web server, the path analysis equipment being positioned at Web server end carries out the path analysis of server to client end.
Preferably, described be used for carrying out client to the path analysis program of server path analysis comprise for execution route analysis javaapplet and be used for path analysis result being submitted to described Web reverse proxy javascript; Wherein said javaapplet is the applet by java language compilation, and described javascript is the script running on client.
Preferably, described Web reverse proxy utilizes the described response page to send to described client to comprise by being used for carrying out the path analysis program of client to server path analysis:
Generated described javascript and described javaapplet label implant in the described response page by described Web reverse proxy;
The response page implanting described javascript and javaapplet label is sent to described client by described Web reverse proxy, so that client is run described javascript and performed described javaapplet.
Preferably, described client obtains described javaapplet and comprises:
After described client receives the described response page, according to javaapplet label wherein, initiate to described Web reverse proxy the request being used for downloading described javaapplet;
The javaapplet response that described client returns according to described Web reverse proxy, downloads described javaapplet.
Preferably, described described client, by running described path analysis program, is analyzed the path of client to server, and analysis result is submitted to described Web reverse proxy and comprise:
After javaapplet described in described client downloads, by running described javaapplet, the path of client to server being analyzed, obtaining the routing information of client to server;
Obtained routing information is submitted to described Web reverse proxy by running described javascript by described client.
Preferably, obtained routing information is submitted to described Web reverse proxy by the described javascript of operation and is comprised by described client:
When described client runs described javascript, send HTTP request by Ajax technology to described Web reverse proxy simultaneously, obtained routing information is submitted to described Web reverse proxy;
Wherein, described ajax is asynchronous JavaScript and XML.
According to a further aspect in the invention, provide a kind of path analysis device of asymmetric route of sing on web server, comprising:
Web reverse proxy receiver module, during for client-access Web server, receives the HTTP request that Web server sends according to client and the response page returned;
Web reverse proxy sending module, utilizes the described response page to send to described client by being used for carrying out the path analysis program of client to server path analysis for described Web reverse proxy;
Path analysis module, for described client by running described path analysis program, the path of client to server is analyzed, and analysis result is submitted to described Web reverse proxy, and during described client-access Web server, the path analysis equipment being positioned at Web server end carries out the path analysis of server to client end.
Preferably, described be used for carrying out client to the path analysis program of server path analysis comprise for execution route analysis javaapplet and be used for path analysis result being submitted to described Web reverse proxy javascript; Wherein said javaapplet is the applet by java language compilation, and described javascript is the script running on client.
Preferably, described Web reverse proxy sending module comprises:
Implant unit, for described Web reverse proxy, generated described javascript and described javaapplet label are implanted in the described response page;
Transmitting element, sends to described client for described Web reverse proxy by the response page implanting described javascript and javaapplet label, so that client is run described javascript and performed described javaapplet.
Preferably, also comprise:
Client process unit, after receiving the described response page for described client, according to javaapplet label wherein, the request being used for downloading described javaapplet is initiated to described Web reverse proxy, and the javaapplet response that described client returns according to described Web reverse proxy, download described javaapplet.
Compared with prior art, beneficial effect of the present invention is:
Path statistical function is applied to Web reverse proxy equipment by the present invention, realizes the path analysis function of transport network layer in conjunction with Web application layer, and the complete two-way approach information drawn under asymmetric route scene, improve Consumer's Experience.
Accompanying drawing explanation
Fig. 1 is the routed path schematic diagram of the client that provides of prior art to Web server end;
Fig. 2 is the route discovery procedure schematic diagram that prior art provides;
Fig. 3 is the schematic diagram of the deployment Web reverse proxy that prior art provides;
Fig. 4 is the schematic diagram of the asymmetric route that prior art provides;
Fig. 5 is the flow chart of the path analysis method of the asymmetric route of a kind of sing on web server that the embodiment of the present invention provides;
Fig. 6 is the schematic diagram of the path analysis device of the asymmetric route of a kind of sing on web server that the embodiment of the present invention provides;
Fig. 7 is that the Web reverse proxy that provides of the embodiment of the present invention is to the path schematic diagram of asymmetric route;
Fig. 8 is that the Web reverse proxy that provides of the embodiment of the present invention is to the path analysis flow chart of asymmetric route.
Embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Fig. 5 shows the flow chart of the path analysis method of the asymmetric route of a kind of sing on web server that the embodiment of the present invention provides, and as shown in Figure 5, comprises the following steps:
Step S501: during client-access Web server, sends HTTP request via Web reverse proxy to Web server;
After step S502:Web server receives described request, the response page of the described HTTP request of response is sent to described Web reverse proxy;
Step S503: described Web reverse proxy utilizes the described response page to send to described client by being used for carrying out the path analysis program of client to server path analysis;
Step S504: described client, by running described path analysis program, is analyzed the path of client to server, and analysis result submitted to described Web reverse proxy;
Step S505: during described client-access Web server, the path analysis equipment being positioned at Web server end carries out the path analysis of server to client end.
Wherein, described be used for carrying out client to the path analysis program of server path analysis comprise for execution route analysis javaapplet and be used for path analysis result being submitted to described Web reverse proxy javascript; Wherein said javaapplet is the applet by java language compilation, and described javascript is the script running on client.
Web reverse proxy of the present invention utilizes the described response page to send to described client to comprise by being used for carrying out the path analysis program of client to server path analysis: generated described javascript and described javaapplet label implant in the described response page by described Web reverse proxy; The response page implanting described javascript and javaapplet label is sent to described client by described Web reverse proxy, so that client is run described javascript and performed described javaapplet.Specifically, described client obtains described javaapplet and comprises: after described client receives the described response page, according to javaapplet label wherein, initiates to described Web reverse proxy the request being used for downloading described javaapplet; The javaapplet response that described client returns according to described Web reverse proxy, downloads described javaapplet.
Described client of the present invention is by running described path analysis program, the path of client to server is analyzed, and analysis result is submitted to described Web reverse proxy and comprise: after javaapplet described in described client downloads, by running described javaapplet, the path of client to server being analyzed, obtaining the routing information of client to server; Obtained routing information is submitted to described Web reverse proxy by running described javascript by described client.Wherein, obtained routing information is submitted to described Web reverse proxy by the described javascript of operation and is comprised by described client: when described client runs described javascript, send HTTP request by Ajax technology to described Web reverse proxy simultaneously, obtained routing information is submitted to described Web reverse proxy; Wherein, described Ajax is asynchronous JavaScript and XML.
Fig. 6 shows the schematic diagram of the path analysis device of the asymmetric route of a kind of sing on web server that the embodiment of the present invention provides, as shown in Figure 6, comprising: Web reverse proxy receiver module 601, Web reverse proxy sending module 602 and path analysis module 603.Described Web reverse proxy receiver module 601, during for client-access Web server, receives the HTTP request that Web server sends according to client and the response page returned; Described Web reverse proxy sending module 602, utilizes the described response page to send to described client by being used for carrying out the path analysis program of client to server path analysis for described Web reverse proxy; Described path analysis module 603, for described client by running described path analysis program, the path of client to server is analyzed, and analysis result is submitted to described Web reverse proxy, and during described client-access Web server, the path analysis equipment being positioned at Web server end carries out the path analysis of server to client end.
Wherein, described be used for carrying out client to the path analysis program of server path analysis comprise for execution route analysis javaapplet and be used for path analysis result being submitted to described Web reverse proxy javascript; Wherein said javaapplet is the applet by java language compilation, and described javascript is the script running on client.
Wherein, implant unit, for described Web reverse proxy, generated described javascript and described javaapplet label are implanted in the described response page; Transmitting element, sends to described client for described Web reverse proxy by the response page implanting described javascript and javaapplet label, so that client is run described javascript and performed described javaapplet.
The present invention also comprises: client process unit, after receiving the described response page for described client, according to javaapplet label wherein, the request being used for downloading described javaapplet is initiated to described Web reverse proxy, and the javaapplet response that described client returns according to described Web reverse proxy, download described javaapplet.
The present invention is the Web function utilizing application layer, analyze the asymmetric route of transport network layer, the data of the response page data of client-requested being carried out to javascript and javaapplet are implanted, thus the path analysis program (principle is identical with above-mentioned path analysis) that javascript with javaapplet making client browser run implantation writes, path analysis result is submitted to Web reverse proxy by client, thus makes DPA system obtain the data of client to the asymmetric route of service end.
Fig. 7 shows Web reverse proxy that the embodiment of the present invention provides to the path schematic diagram of asymmetric route, and as shown in Figure 7, depth pathway analysis (DPA) process is divided into two parts by the present invention: the path analysis in 1.ServertoClient direction.Traditional path analysis method is used to perform.The path analysis in 2.ClienttoServer direction uses the javaapplet program being implanted in client to realize, the method of this program statistics is the same with traditional approach, because routing statistics flow (Limited-TTL-IP packet) is sent by client, so the routing information that ClienttoServer holds correctly can be drawn.This routing information exports to Web reverse proxy by the javascript implanting client again, thus realizes gathering of two-way routing iinformation.
Fig. 8 shows Web reverse proxy that the embodiment of the present invention provides to the path analysis flow chart of asymmetric route, as shown in Figure 8, comprises the following steps:
Step 1, client browser initially send HTTP request html page.
Step 2, this request are directly forwarded by proxy server.
Step 3, Web server response html page content.
After step 4, page data arrive Web reverse proxy end, agent side program implant javascript and " <applet> " html page-tag.And this page data is issued client.
After step 5, client receive data, start each element of downloading page, comprising javaapplet program implanted in the page.Request msg by Web reverse proxy device responds, and sends javaapplet program.
Step 6, after client has downloaded javaapplet, start to perform this program, this program sends the IP message of specific T TL automatically, and storing path information (routing IP value, time delay).
Step 7, after the javaapplet program statistical path of client completes, the javascript data being implanted in client start perform and send HTTP request by ajax, with outgoing route statistical information to Web reverse proxy equipment.
Wherein, the applet label of HTML is implanted:
<appletarchive＝"dpa.jar"code＝"dpa.class"id＝"dpa"width＝1height＝1mayscript></applet>
Implant the javascript fragment of HTML:
<scriptlanguage＝”javascript”>functiontracert(){ping＝document.applets[0]…
Use upstream generic module (realizing the implantation of the WEB reverse proxy) code snippet that the reverse proxy software Nginx that increases income realizes:
In sum, the present invention has following technique effect:
Path statistical function is applied to Web reverse proxy equipment by the present invention, realizes the path analysis function of transport network layer in conjunction with Web application layer, and the complete two-way approach information drawn under asymmetric route scene, improve Consumer's Experience.
Although above to invention has been detailed description, the present invention is not limited thereto, those skilled in the art of the present technique can carry out various amendment according to principle of the present invention.Therefore, all amendments done according to the principle of the invention, all should be understood to fall into protection scope of the present invention.
Claims (10)
1. a path analysis method for the asymmetric route of sing on web server, is characterized in that, comprise the following steps:
During client-access Web server, send HTTP request via Web reverse proxy to Web server;
After Web server receives described request, the response page of the described HTTP request of response is sent to described Web reverse proxy;
Described Web reverse proxy utilizes the described response page to send to described client by being used for carrying out the path analysis program of client to server path analysis;
Described client, by running described path analysis program, is analyzed the path of client to server, and analysis result is submitted to described Web reverse proxy;
During described client-access Web server, the path analysis equipment being positioned at Web server end carries out the path analysis of server to client end.
2. method according to claim 1, it is characterized in that, described be used for carrying out client to the path analysis program of server path analysis comprise for execution route analysis javaapplet and be used for path analysis result being submitted to described Web reverse proxy javascript; Wherein said javaapplet is the applet by java language compilation, and described javascript is the script running on client.
3. method according to claim 2, is characterized in that, described Web reverse proxy utilizes the described response page to send to described client to comprise by being used for carrying out the path analysis program of client to server path analysis:
Generated described javascript and described javaapplet label implant in the described response page by described Web reverse proxy;
The response page implanting described javascript and javaapplet label is sent to described client by described Web reverse proxy, so that client is run described javascript and performed described javaapplet.
4. method according to claim 3, is characterized in that, described client obtains described javaapplet and comprises:
After described client receives the described response page, according to javaapplet label wherein, initiate to described Web reverse proxy the request being used for downloading described javaapplet;
The javaapplet response that described client returns according to described Web reverse proxy, downloads described javaapplet.
5. method according to claim 4, is characterized in that, described described client, by running described path analysis program, is analyzed the path of client to server, and analysis result is submitted to described Web reverse proxy and comprise:
After javaapplet described in described client downloads, by running described javaapplet, the path of client to server being analyzed, obtaining the routing information of client to server;
Obtained routing information is submitted to described Web reverse proxy by running described javascript by described client.
6. method according to claim 5, is characterized in that, obtained routing information is submitted to described Web reverse proxy by the described javascript of operation and comprised by described client:
When described client runs described javascript, send HTTP request by Ajax technology to described Web reverse proxy simultaneously, obtained routing information is submitted to described Web reverse proxy;
Wherein, described Ajax is asynchronous JavaScript and XML.
7. a path analysis device for the asymmetric route of sing on web server, is characterized in that, comprising:
Web reverse proxy receiver module, during for client-access Web server, receives the HTTP request that Web server sends according to client and the response page returned;
Web reverse proxy sending module, utilizes the described response page to send to described client by being used for carrying out the path analysis program of client to server path analysis for described Web reverse proxy;
Path analysis module, for described client by running described path analysis program, the path of client to server is analyzed, and analysis result is submitted to described Web reverse proxy, and during described client-access Web server, the path analysis equipment being positioned at Web server end carries out the path analysis of server to client end.
8. device according to claim 7, it is characterized in that, described be used for carrying out client to the path analysis program of server path analysis comprise for execution route analysis javaapplet and be used for path analysis result being submitted to described Web reverse proxy javascript; Wherein said javaapplet is the applet by java language compilation, and described javascript is the script running on client.
9. device according to claim 8, is characterized in that, described Web reverse proxy sending module comprises:
Implant unit, for described Web reverse proxy, generated described javascript and described javaapplet label are implanted in the described response page;
Transmitting element, sends to described client for described Web reverse proxy by the response page implanting described javascript and javaapplet label, so that client is run described javascript and performed described javaapplet.
10. device according to claim 9, is characterized in that, also comprises:
Client process unit, after receiving the described response page for described client, according to javaapplet label wherein, the request being used for downloading described javaapplet is initiated to described Web reverse proxy, and the javaapplet response that described client returns according to described Web reverse proxy, download described javaapplet.
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| CN105656671A (en) * | 2016-01-06 | 2016-06-08 | 北京京东尚科信息技术有限公司 | JavaScript routing method and apparatus thereof |
| CN106255264A (en) * | 2016-08-17 | 2016-12-21 | 合肥耀贝软件开发有限公司 | Intelligent street lamp control system |
| CN109067914A (en) * | 2018-09-20 | 2018-12-21 | 星环信息科技（上海）有限公司 | Proxy Method, device, equipment and the storage medium of Web service |
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| CN104243475A (en) * | 2014-09-18 | 2014-12-24 | 东软集团股份有限公司 | Method and system for dynamic mixing based on WEB reverse proxy |
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| US20130232234A1 (en) * | 2009-10-23 | 2013-09-05 | Ajay Kapur | Dynamically rehosting web content |
| CN104243475A (en) * | 2014-09-18 | 2014-12-24 | 东软集团股份有限公司 | Method and system for dynamic mixing based on WEB reverse proxy |
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| CN105656671A (en) * | 2016-01-06 | 2016-06-08 | 北京京东尚科信息技术有限公司 | JavaScript routing method and apparatus thereof |
| CN105656671B (en) * | 2016-01-06 | 2019-06-04 | 北京京东尚科信息技术有限公司 | JavaScript method for routing and its device |
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| CN109067914A (en) * | 2018-09-20 | 2018-12-21 | 星环信息科技（上海）有限公司 | Proxy Method, device, equipment and the storage medium of Web service |
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| CN105208074B (en) | 2018-05-15 |
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