TWI483187B - Plug-in download method and system - Google Patents

Description

Plug-in download method and system

The present invention relates to the field of network interaction, and in particular, to a method and system for downloading a plug-in program.

A plug-in program is a program module that conforms to the access specification of the service platform and can run on the service platform. It is not a function or a service module that is necessary for the service platform itself. From a physical form, it includes but is not limited to a dynamic link. Dynamic Linkable Library (DLL). Instant Messaging (IM) refers to a service that can send and receive Internet messages on the Internet in real time. Through the IM function, you can know whether a contact is online or not, and can communicate instantly with online contacts. IM software is a software for realizing online chat and communication through instant messaging technology. A client loaded with IM software can be called an IM client, and an IM client sometimes needs to download a plug-in from a server.

In the process of downloading the plug-in program from the existing IM client, the peer-to-peer method is adopted. This method requires a seed server, which is used to record which clients have plug-in resources and what kind of plug-ins are available. Resources, as well as physical information of each client, such as the media access control (MAC) address of the client, and the Internet Protocol (IP) address. When a client needs to download the plug-in resource, the seed of the plug-in resource can be obtained through some means, and the seed server needs to download the connection from the plug-in download server according to the plug-in information of the seed record. Plugin.

As can be seen from the above process, the prior art download plug-in method requires the seed server to provide the corresponding seed, and the seed server occupies more network resources; further, when the client downloads the plug-in and installs it. Later, the updated plugin information needs to be synchronized to the seed server, which in turn increases the cost of maintaining the seed server and complicates the operation.

In short, a technical problem that needs to be solved urgently by those skilled in the art is how to innovatively propose a plug-in downloading method to solve the problem that the prior art requires a dedicated seed server and requires a large number of synchronous operations. Road resource waste problem.

The technical problem to be solved by the present application is to provide a method for downloading a plug-in program, which solves the problem that the prior art requires a dedicated seed server and requires a large amount of synchronization of network resources.

The application also provides a system for downloading a plug-in program to ensure the implementation and application of the above method in practice.

In order to solve the above problem, the present application discloses a method for downloading a plug-in program, comprising: an instant messaging IM client receiving a plug-in download request sent by a user; and when detecting a peer-end user terminal that can directly access, a certain preset The IM client requests a plug-in from the peer client according to the plug-in download request; when the preset time is exceeded, the IM client directly downloads the plug-in from the download server.

The application also discloses a system for downloading a plug-in program, the system comprising: an IM client, comprising a receiving module, a requesting plug-in module and a downloading module; wherein the receiving module is configured to receive a plug-in download sent by the user The requesting plug-in module is configured to, when detecting the peer-end client that can be directly accessed, request a plug-in from the peer-end client according to the plug-in download request within a certain preset time; the downloading mode The group is used to download the plugin directly from the download server when the preset time is exceeded.

Compared with the prior art, the present application includes the following advantages: In the embodiment of the present application, the IM client receives the plug-in download request sent by the user, and the plug-in download request includes the plug-in name and version information; When the peer end user directly accesses, the IM client requests the plug-in program to the peer end user according to the plug-in name and version information within a certain preset time; when the peer end user stores the plug-in In the program, the IM client receives the plug-in transmitted by the peer client, and when the preset time is exceeded, the IM client directly downloads the plug-in from the download server. It can be seen that the application does not use the seed server, but uses the plug-in saved by the online client (ie, the friend client) of the IM client, thereby directly providing the plug-in for the IM client. The process of setting up the seed server is avoided, and the system does not need to maintain the seed server to save the resources of the server and the network resources of the server, so that the method for downloading the plug-in in the embodiment is simpler and Further, it is further avoided that the IM client needs to synchronously upload the information of the plug-in to the download server after installing the plug-in.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

This application can be used in a variety of general purpose or special purpose computing device environments or configurations. For example: personal computers, server computers, handheld devices or portable devices, tablet devices, multi-processor devices, decentralized computing environments including any of the above devices or devices, and the like.

The application can be described in the general context of computer-executable instructions executed by a computer, such as a program module. Generally, a program module includes routines, programs, objects, components, data structures, and the like that perform particular tasks or implement particular abstract data types. The present application can also be practiced in a distributed computing environment where tasks are performed by remote processing devices that are connected through a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media, including storage devices.

One of the main ideas of the application includes that the IM client receives the plug-in download request sent by the user, and the plug-in download request includes the plug-in name and version information; when detecting the peer client that can directly access, The IM client requests a plug-in from the peer client according to the plug-in name and version information; when the peer client stores the plug-in, the IM client receives the plug-in transmitted by the peer client. .

The system architecture of the present application in practical applications can be referred to FIG. 1 , which includes a download server, an IM server, an IM client, and a peer client. The download server is used to request a plug-in from the IM server directly to the download server when the peer user cannot provide the plug-in to the IM client, and the IM server is used to send the plug-in to the IM user. The terminal provides the address information of the contact client (that is, the peer client), including the IP address information and the MAC address information. The peer user terminal may be multiple, and the terminal can provide the IM client online. The plugin required.

Referring to FIG. 2, a flowchart of Embodiment 1 of a method for downloading a plug-in program of the present application is shown, which may include the following steps: Step 201: An IM client receives a plug-in download request sent by a user; wherein, the user sends the plug-in to the IM client. Sending a plug-in download request may include a plurality of methods in practice, for example, the user clicks on a Uniform Resource Locator URL link or a dialog box of an installation plug-in; or the user clicks on an IM-provider, including the installation plug-in The plug-in promotion entry of the program, the plug-in promotion portal may include a URL, which may be an entry button or the like at the user's main interface or chat window; or the user clicks on an IM operator's floating promotion area. Generally, the page area of the system task bar is raised in the lower right corner; or, after the user accepts the user agreement of the current system preset installation plug-in program, the plug-in installation is triggered by the system preset; the plug-in download request may include The name and version information of the plugin can be based on the plugin's The name and version are used to uniquely identify a plug-in; in the actual application, the plug-in download request triggered by the user can be intercepted by the plug-in manager of the IM client, and the plug-in manager is a function module of the IM client; 202: When detecting the peer client that can be directly accessed, the IM client requests the plug-in to the peer client according to the plug-in download request within a certain preset time; the IM client can receive After the downloading request sent by the user is sent to the user, it is detected whether the IM client has a peer user that can be accessed directly, and the access can be directly accessed, that is, whether the IM client and the peer user can pass the IM. The server directly performs IP communication; wherein the peer end user is also an IM client connected to the IM server, capable of instant messaging; specifically, the IP address in the friend address information list recorded by the IM client The address information is used to detect whether the IM client and the peer user can directly access; the preset time can be based on the IM client. The actual demand of the network, or the actual operation of the network, for example, 10 seconds; this application does not need to limit this, the size of the preset time does not affect the implementation of the application; wherein the friend address information list Can be as follows:

According to the IP address information, it can be known from the relevant standards which IP address belongs to the public network address, and which IP address belongs to the private network segment, that is, the regional network, only when the IP address of the opposite client belongs to the public network address. For example, the Sina IP address can directly communicate with the IM client without using the IM server; because if the IP address of the peer user is not a public network, it belongs to the local area network address, and the local area network The IP address is considered to be inaccessible in the embodiment of the present application. For example, an internal IP address of a company may not be directly accessed by an external network due to some special setting parameters; Therefore, the method for the peer end user that can be directly accessed in this step includes: sub-step A1: the IM client detects whether there is a peer user end on the current line, and if yes, proceeds to sub-step A2; sub-step A2 : determining, according to the stored IP address information of the peer client on the line, whether there is a peer user end capable of IP communication in the peer client on the line; if the detection is such The peer user, the IM client requests the plugin name and the plugin corresponding to the version information to the peer client, which can be implemented by sending a download plugin request; Step 203: The peer user side The IM client transmits the plugin.

Generally, after receiving the download plug-in request sent by the IM client, the peer end user locally detects whether the plug-in is present, and if so, the peer user The IM client transmits the plugin. When the peer user does not have the plugin, the prompt information of the pluginless program can be returned to the IM client, and the IM client can continue to request the plugin from other peer clients that can directly access the plugin. Program until you can request the plugin.

It should be noted that, when the preset time is exceeded, the IM client directly downloads the plug-in from the download server, because it is possible that the IM client cannot wait too long or causes the requesting plug-in to take too long. The IM client has almost no peer client online. Therefore, when the IM client requests the plug-in from the peer client for more than a predetermined time, the plug-in is downloaded directly from the download server.

In this embodiment, after receiving the download request from the IM client, the IM client directly detects whether there is a peer user that can be directly accessed. When such a peer user terminal is detected, the pair may directly The end user requests the required plug-in program, and finally receives the plug-in program transmitted by the peer-end client, thereby avoiding the process of setting the seed server, and the system does not need to maintain the seed server to save a lot of server resources. And the network resources of the server make the downloading method of the plug-in in this embodiment more simple and easy.

Referring to FIG. 3, a flowchart of Embodiment 2 of a method for downloading a plug-in program of the present application is shown, which may include the following steps: Step 301: The IM client receives a plug-in download request sent by a user, and the plug-in download request includes a plug-in program. Name and version information; in the actual application, the IM client includes a plug-in manager, and the execution body of the embodiment may also be implemented by using a plug-in manager; Step 302: The IM client detects whether there is a peer on the current line. The user terminal, if yes, proceeds to step 303; it can detect that the peer user terminal is in the online state in the friend address information list of the IM client, in the embodiment of the present application, the peer user terminal is the same All the contact users added by the IM client; the IM server will push the status of the peer user to the IM client when the IM client logs in, and the IM server will also be in any one of the peer users. When the status of the terminal changes, the status of the updated peer user is pushed to the IM client; in this step, if no If there is a peer user currently on the network, the IM client directly requests the plugin from the download server; Step 303: Determine the online address according to the stored IP address information of the peer user on the online Whether there is a peer client capable of IP communication in the peer client, if yes, proceed to step 304; when the IM client logs in, the IM server pushes the address information of the peer client on the line. To the IM client, the IM client stores the address information; in this step, the peer address can be known based on the IP address information, for example, whether it belongs to the public network or the regional network. Whether the user terminal and the IM client can directly perform IP communication; and can determine which operator belongs to the IP address information according to the IP address information, and can further preferentially select the peer user terminal of the same operator to communicate; in this step, if If it is detected that there is no peer user that can perform IP communication, the IM client directly requests the plug-in from the download server; Step 304: The IM is used within a preset time. The client initiates a connection establishment request to a peer end user. When the connection establishment is successful, the process proceeds to step 305. When the connection establishment fails, the process proceeds to step 306; the IM user terminal sends the peer user to the peer user who can directly perform IP communication. The terminal initiates the establishment of the connection request, and may initiate the connection to one of the opposite end users in a loop manner, wherein the connection between the two user terminals may be a TCP connection; the preset time is preferably selected for 10 seconds. It should be noted that when it is detected that there are multiple peer UEs that can communicate directly, one of them can be randomly selected, or the IM client can be selected by judging the IP address of the peer client. The peer client belonging to the same operator downloads. For example, if the IM client is a subscriber of the telecommunications carrier, the peer client of the telecom operator is preferentially selected for download; if there are multiple peers belonging to the same operator On the client side, the peer end user can be selected again from the physical address; in general, the same operator's client side is different than the different operations. The download speed between the users is fast, and the same operator can select the user with the physical address to download. In actual operation, it can be implemented according to the MAC address; of course, it can also be started. The thread, that is, the connection establishment request is initiated to the plurality of peer users at the same time, and then the connection client with the fastest connection is selected, and those skilled in the art can know which peer to download the plug-in. According to the actual network situation and the user's needs, the application does not limit the download mode; Step 305: The IM client sends a download plug-in request to the peer user, and proceeds to step 307; Step 306 The IM client loops to initiate establishment of a connection request to other peer users until the connection is successfully established, and proceeds to step 307; the IM client can loop back to establish a connection request to other peer users that can directly perform IP communication. Until the IM client can successfully establish a connection with a peer user; it should be noted that when all eligible I If the M client fails to establish a connection, the client requests the plugin from the download server to download directly from the download server. Step 307: The peer user transmits the plugin to the IM client; When receiving the download plug-in request sent by the IM client, the end user locally detects whether the plug-in is saved, and if so, directly transmits the plug-in to the IM client; Step 308: The IM client The plugin is installed locally, and the plugin name and version information corresponding to the plugin are saved. Step 309: When the preset time is exceeded, the IM client directly downloads the plugin from the download server.

Step 308 and step 309 are steps for selecting and executing, and are arranged in a sequential relationship for convenience of description. Those skilled in the art may know that step 308 and step 309 do not have a sequential relationship.

In this embodiment, after receiving the plugin, the IM client locally installs the plugin, and saves the plugin name and version information corresponding to the plugin, which needs to be described as different from the prior art. In this case, the server does not need to be uploaded to the server. Therefore, in this embodiment, not only the seed server but also the server resources and the server network resources are saved. It is also possible to omit the synchronization operation of the IM client uploading the plug-in installation to the seed server, thereby saving the network interaction resources of the server.

Referring to FIG. 4, a flowchart of Embodiment 3 of a method for downloading a plug-in program of the present application is shown. This embodiment can be understood as a specific example of the application in the actual application, and may include the following steps: Step 401: User in IM The client logs in to the IM software; Step 402: The IM server sends the address information of the peer user on the line to the IM client; after the user logs in to the IM software, the IM server sends the peer on the line to the IM client. The address information of the user terminal; Step 403: The IM client records the address information in the friend address information list; the IM client can record the address information through the friend address information list, and the foregoing steps are in Embodiment 1 and implemented. It has been described in detail in Example 2, and will not be described here. Step 404: The plug-in manager of the IM client receives the user's click on the Uniform Resource Locator URL link or dialog box of the plug-in, and then goes to the IM client. Send a request, which includes the plugin name and version information; when the user clicks on the URL link or dialog box of the plugin, it sends the message to the IM server. Sending the request, but the IM client first intercepts the request and performs subsequent operations; the request includes the plugin name and version information, and can uniquely identify a plugin; Step 405: The plugin manager detects the locally saved plugin identifier In the information, whether the plugin name and version information are included, if not, proceed to step 406; in this embodiment, the plugin manager detects whether the plugin name is included in the locally stored plugin identification information. And the version information, if it is already included, it can be obtained directly from the local; Step 406: The plugin manager sends the plugin name and version information to the IM server; Step 407: The plugin manager receives the IM server according to The plugin name and version information returned by the plugin signature information; in this example, preferably, the plugin manager can also send the plugin name and version information to the IM server; the IM server receives the plugin name And the version information, query the plugin signature information, The signature information is a hash value of the Message-digest Algorithm 5 (MD5), which is used to uniquely identify the installation package information of a plug-in, and can be used to determine whether the plug-in is modified. The IM server sends the signature information to the IM client. Step 408: The plugin manager detects whether there is a peer client currently online, and if yes, proceeds to step 409; Step 409: The plugin manager stores according to the The IP address information of the peer end user on the line determines whether there is a peer user end capable of IP communication in the peer end user on the line, and if yes, proceeds to step 410; Step 410: At a preset time The plugin manager sends a download plugin request to the peer client, the download plugin request includes the plugin name and version information, and the plugin signature information; in this example, different from the first two embodiments. The downloading plugin request sent by the plugin manager to the peer client includes the plugin name and version information, and Including the plug-in signature information; step 411: the peer end user detects whether the received plug-in signature information is consistent with the locally saved plug-in signature information, and if so, transmits the plug-in to the IM client; the peer The user end detects whether the signature information of the plug-in program and the signature information of the locally stored plug-in program are consistent. When the user is inconsistent, the user may return a prompt error message to the IM client, or may return a prompt message without the plug-in. The IM client can directly download the plug-in from the download server; if the client is consistent, the peer user transmits the plug-in to the IM client; Step 412: The IM client installs the plug-in locally. The plugin name, version information, and signature information corresponding to the plugin are saved.

It should be noted that, according to the embodiment of the present application, those skilled in the art can easily think that when all the peer users do not have the plug-in required by the IM client, the peer client can continue to The buddy client sends a plugin request until one of the peer clients can find the buddy client that saved the plugin, or the buddy client continues to send the plugin request to the friend until the plugin is found; of course, if The plug-in can not be queried within a certain period of time, and can also be downloaded directly from the download server. The certain time can be arbitrarily set according to the actual network conditions.

For the foregoing method embodiments, for the sake of brevity, they are all described as a series of action combinations, but those skilled in the art should understand that the present application is not limited by the described action sequence, because according to the present application, Some steps can be performed in other orders or at the same time. In the following, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

The method provided in the method embodiment 1 of the plug-in downloading method of the present application is as described above. Referring to FIG. 5, the present application further provides a system embodiment 1 for downloading a plug-in program. In this embodiment, the system may include: The IM client 501 includes a receiving module 5011, a requesting plug-in module 5012, and a downloading module 5013. The receiving module 5011 is configured to receive a plug-in download request sent by a user. The request plug-in module 5012 is configured to: When detecting the peer client that can be directly accessed, the plug-in program is requested from the peer client according to the plug-in download request within a certain preset time; the download module 5013 is configured to exceed the preset time. The plug-in program is downloaded directly from the download server. The user sends a plug-in download request to the IM client. In practice, the user may include multiple methods, for example, the user clicks on the uniform resource locator URL chain of an installer. a node or a dialog box; or, the user clicks on a plug-in promotion portal provided by an IM operator, including an installation plug-in instruction. The plugin promotion portal may include a URL, which may be an entry button or a similar entry at the user's main interface or chat window, or the user clicks on an IM operator's floating promotion area, generally the system taskbar is on the right. The page area that appears in the lower corner; or, after the user accepts the user agreement of the current system preset installation plug-in, the plug-in installation is triggered by the system preset; the plug-in download request may include the name and version information of the plug-in, According to the name and version of the plug-in, a plug-in program is uniquely determined. In the actual application, the user-triggered plug-in download request can be intercepted by the plug-in manager of the IM client, and the plug-in manager is a function of the IM client. The client terminal 502 is configured to transmit the plugin to the IM client.

In general, after receiving the request of the download plugin sent by the IM client, the peer end user may first detect whether the plugin exists locally, and if so, the peer end user transmits the plugin to the IM client. Program. The requesting plug-in module 5012 can continue to other peer-end clients that can directly access the plug-in information of the plug-in program when the peer-end client does not have the plug-in program. Request the plugin until it can request the plugin.

In this embodiment, after receiving the download request from the IM client, the IM client directly detects whether there is a peer user that can be directly accessed. When such a peer user terminal is detected, the pair may directly The end user requests the required plug-in program, and finally receives the plug-in program transmitted by the peer-end client, thereby avoiding the process of setting the seed server, and the system does not need to maintain the seed server to save a lot of server resources. And the network resources of the server make the downloading method of the plug-in in this embodiment more simple and easy.

Corresponding to the method provided in Embodiment 2 of the method for downloading a plug-in program of the present application, referring to FIG. 6, the present application further provides a preferred embodiment 2 of a system for downloading a plug-in program. In this embodiment, the system specifically The receiving module 5011 is configured to receive a plug-in download request sent by the user, the plug-in download request includes a plug-in name and version information, and the detecting sub-module 601 is configured to detect whether the current The peer end user on the line; the detecting sub-module 601 can detect the number of peer users in the online address information list of the IM client, and in the embodiment of the present application, the peer user end All the contact users added by the IM client; the IM server will push the status of the peer user to the IM client when the IM client logs in, and the IM server will also be in any one of the When the status of the peer end user changes, the status of the updated peer end user is pushed to the IM user terminal; if the detecting submodule 601 detects If there is a peer user on the current line, the IM client directly requests the plug-in from the download server; and the judgment sub-module 602 is configured to: when the result of detecting the sub-module is YES, according to the stored line The IP address information of the peer end user determines whether there is a peer user end capable of IP communication in the peer end user on the line; when the IM client is logged in, the IM server will be the peer user on the line. The address information of the terminal is pushed to the IM client, and the IM client stores the address information; in this step, according to the meaning indicated by the IP address information, for example, whether it belongs to the public network, or The local area network, etc., knows whether the peer end user and the IM user end can directly perform IP communication; and can determine which operator belongs to according to the IP address information, and can further preferentially select the peer end user of the same operator. Communicating; requesting the plug-in sub-module 603, when the result of the judging sub-module is YES, requesting the plug-in from the peer end user according to the plug-in identifier information; The program sub-module 603 may specifically include: a request connection sub-module, configured to initiate a connection establishment request to a peer user that can directly access when the result of the judging sub-module is YES; requesting a sub-module For sending a download plugin request to the peer end user when the connection is successfully established; the loop request submodule is configured to initiate a connection establishment request to the other peer end users when the connection establishment fails; The installation save module 604 is configured to install the plugin locally and save the plugin name and version information corresponding to the plugin.

The system may further include: a peer end client 502, configured to transmit the plugin to the IM client.

In this embodiment, after receiving the plugin, the IM client locally installs the plugin, and saves the plugin name and version information corresponding to the plugin, which needs to be explained, and the prior art. The difference is that the IM user can be saved locally in the IM client. Therefore, in this embodiment, the seed server can be saved, the network resources can be saved, and the IM client can be omitted. The seed server uploads the synchronization operation of the plug-in installation, thus saving the server resources and the server's network interaction resources.

Meanwhile, in another embodiment of the present application, referring to FIG. 7, the IM client may further include: a detecting module 701, configured to detect whether the plugin name and the plugin name are included in the locally saved plugin identification information. The version information 702 is configured to send the plugin name and version information to the IM server, and the second receiving module 703 is configured to receive the plugin signature returned by the IM server according to the plugin name and version information. The requesting plug-in module 5012 is specifically configured to send the plug-in name and version information and the plug-in signature information to the peer end user when detecting the peer-end user end that can be directly accessed; The peer client 502 is specifically configured to detect whether the received plugin signature information is consistent with the locally saved plugin signature information, and if yes, transmit the plugin to the IM client.

It should be noted that each embodiment in the specification is described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the embodiments are referred to each other. can. For the system class embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

It should also be noted that, in this context, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying such entities or operations. There is any such actual relationship or order between them. Also, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that includes a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The method and system for downloading a plug-in program provided by the present application are described in detail. The principles and implementation manners of the present application are described in the following. The description of the above embodiments is only used to help understand the present application. The method and its core idea; at the same time, those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and the scope of application, in summary, the contents of this specification should not be construed as Application restrictions.

501. . . IM client

5011. . . Receiving module

5012. . . Request plugin module

5013. . . Download module

502. . . Peer client

601. . . Detection submodule

602. . . Judging submodule

603. . . Request plugin submodule

604. . . Install save module

701. . . Detection module

702. . . Sending module

703. . . Second receiving module

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only Some embodiments of the application may also be used to obtain other figures from those of ordinary skill in the art without departing from the scope of the invention.

1 is a system architecture diagram of the present application in practical application;

2 is a flowchart of Embodiment 1 of a method for downloading a plug-in program of the present application;

3 is a flowchart of Embodiment 2 of a method for downloading a plug-in program of the present application;

4 is a flowchart of Embodiment 3 of a method for downloading a plug-in program of the present application;

5 is a structural block diagram of Embodiment 1 of a system for downloading a plug-in program of the present application;

6 is a structural block diagram of Embodiment 2 of a system for downloading a plug-in program of the present application;

FIG. 7 is a partial structural block diagram of an IM client in a system embodiment 2 of a plug-in download of the present application.

Claims (15)

A method for downloading a plug-in program, the method comprising: an instant messaging IM client receiving a plug-in download request sent by a user; and when detecting a peer-end user terminal that can be directly accessed, within a certain preset time, The IM client requests a plug-in from the peer client according to the plug-in download request; when the preset time is exceeded, the IM client directly downloads the plug-in from the download server. The method of claim 1, wherein the method for detecting a peer end user that can be directly accessed includes: detecting, by the IM client, whether there is a peer user end on the current line; if yes, according to the storing The IP address information of the peer client on the line determines whether there is a peer client that can directly perform IP communication in the peer client on the line. According to the method of claim 1, wherein the IM client requests the plug-in to the peer user according to the plug-in download request, and the method includes: the IM client initiates a connection to a peer user. If the connection is successfully established, the download plug-in request is sent to the peer end user. When the connection establishment fails, the loop initiates a connection establishment request to the other peer end users. The method of claim 1, wherein the plugin download request includes a plugin name and version information. According to the method of claim 4, after the IM client receives the plug-in download request sent by the user, the method further includes: the IM client detecting whether the plug-in name is included in the locally stored plug-in identifier information. And version information; if not included, the step of requesting the plugin from the peer client according to the plugin name and version information. According to the method of claim 4, after the IM client receives the plug-in download request sent by the user, the IM client sends the plug-in name and version information to the IM server; the IM client Receiving the plugin signature information returned by the IM server according to the plugin name and the version information; the IM client requests the plugin from the peer client according to the plugin name and the version information, including: the IM client Sending the plugin name and version information to the peer end user, and the plugin signature information; correspondingly, the peer end user transmits the plugin to the IM client, specifically: the peer end user detects and receives Whether the plugin signature information is consistent with the locally saved plugin signature information, and if so, the plugin is transmitted to the IM client. According to the method of claim 1, wherein after the peer user transmits the plugin to the IM client, the method further includes: the IM client locally installing the plugin, and corresponding to the plugin The plugin name and version information are saved. According to the method of claim 1, wherein the IM client receives the plug-in download request sent by the user, in any one of the following ways or any combination: the IM client receives the unifiedness of the user clicking the install plug-in a request sent to an IM client when the resource locator is a URL link or a dialog box; the IM client receives a request sent by the user to the IM client when clicking the floating promotion area including the installation plugin instruction; the IM user Receiving a request sent by the user to the IM client when clicking the plug-in promotion portal including the plug-in indication; the IM client receiving the user agreement to accept the current system preset installation plug-in to the IM client The request sent. According to the method of claim 1 or 2, wherein when the number of peer users that can directly access is detected, the IP address selection of the peer client is the same as the IM client. The peer end user of the operator is downloaded, and/or, at the same time, initiates a connection establishment request to the plurality of peer end users, and selects the peer end user that establishes the fastest connection to download. A system for downloading a plug-in program, the system comprising: an IM client, comprising a receiving module, a requesting plug-in module, and a downloading module; wherein the receiving module is configured to receive a plug-in download request sent by a user The requesting plug-in module is configured to request a plug-in from the peer-end client according to the plug-in download request within a certain preset time when detecting the peer-end client that can directly access the plug-in terminal; the downloading module Used to download the plugin directly from the download server when the preset time is exceeded. The system of claim 9, wherein the requesting plug-in module comprises: a detecting sub-module for detecting whether there is a peer end user on the current line; and determining a sub-module for When the result of detecting the sub-module is YES, according to the stored IP address information of the opposite end user on the line, it is determined whether there is a peer end user capable of IP communication in the opposite end user on the line; and requesting the plug-in program The sub-module is configured to request the plug-in from the peer user according to the plug-in identification information when the result of the judging sub-module is YES. According to the system of claim 11, wherein the requesting plug-in sub-module specifically includes: requesting a connection sub-module, wherein when the result of the judging sub-module is YES, one can directly save The peer end user initiates a connection establishment request; the request submodule is configured to send a download plugin request to the peer end client when the connection establishment is successful; and the loop request submodule is used to establish the connection In case of failure, the loop initiates a connection establishment request to other peer clients. According to the system of claim 10, wherein the plug-in download request includes a plug-in name and version information, the IM client further includes: a detecting module, configured for the IM client to detect the locally saved plug-in Whether the plugin name and version information are included in the identification information. The system of claim 13, wherein the IM client further comprises: a sending module, configured to send the plugin name and version information to the IM server; and a second receiving module, configured to receive the The external server signature information returned by the IM server according to the plugin name and the version information; the request plugin module is specifically configured to send to the peer user terminal when detecting the peer user terminal that can directly access The plugin name and version information, and the plugin signature information; the peer client is specifically configured to detect whether the received plugin signature information and the locally saved plugin signature information are consistent, and if so, to the IM The client transmits the plugin. The system of claim 10, wherein the IM client further comprises: an installation save module, configured to locally install the plugin, and save the plugin name and version information corresponding to the plugin .