CN105119805A - Instant messaging data transmission method and instant messaging data transmission system - Google Patents
Instant messaging data transmission method and instant messaging data transmission system Download PDFInfo
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- CN105119805A CN105119805A CN201510417007.8A CN201510417007A CN105119805A CN 105119805 A CN105119805 A CN 105119805A CN 201510417007 A CN201510417007 A CN 201510417007A CN 105119805 A CN105119805 A CN 105119805A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
- H04L51/04—Real-time or near real-time messaging, e.g. instant messaging [IM]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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Abstract
The invention discloses an instant messaging data transmission method. The instant messaging data transmission method comprises the following steps: a source terminal generates an identification code according to to-be-sent instant messaging information data and a preset rule, the source terminal sends a communication connection request to a private server, the source terminal sends a data transmission request to the private server after communication connection between the source terminal and the private server is established, the private server judges whether identification information consistent with the identification code exists in a first database, the private server calls the instant messaging data corresponding to the identification information from the first database if the identification information consistent with the identification code exists in the first database, and the private server sends the instant messaging data to a target terminal corresponding to IP address information of the target terminal. The invention further discloses an instant messaging data transmission system. When the fact that corresponding instant messaging data exists in the first database is determined through the data transmission request sent by the source terminal, the uploading process of the instant messaging data is reduced, and the data transmission speed is improved.
Description
Technical field
The present invention relates to technical field of data transmission, particularly relate to a kind of instant communication data transmission method and instant communication data transmission system.
Background technology
Along with the development of network technology, in order to improve the Experience Degree of user, higher requirement is proposed to data transmission bauds.Especially, higher requirement is proposed to the data transmission bauds of mass file.And the major programme of existing lifting data transmission bauds is for expanding the network bandwidth.
But the expansion of the network bandwidth is limited, and the network bandwidth comprises uploading bandwidth and download bandwidth, the data transmission bauds with uploading bandwidth is about 1/10th characteristics of the data transmission bauds of download bandwidth.Therefore, how under the condition of the existing network bandwidth, the characteristic utilizing the transmission speed of download bandwidth to be far longer than the transmission speed of uploading bandwidth promotes the data transmission bauds of mass file, is current technical problem urgently to be resolved hurrily.
Summary of the invention
In view of this, be necessary to provide a kind of under the condition of the existing network bandwidth in fact, promote the instant communication data transmission method of the data transmission bauds of mass file, and realize the instant communication data transmission system of this instant communication data transmission method.
A kind of instant communication data transmission method, it comprises the steps:
Source terminal is according to IMU information data to be sent and preset rules generating identification code.
Source terminal sends communication connection request to secret server, and to set up the communication connection with secret server, secret server comprises the first database storing multiple instant communication data, and instant communication data comprises with it identification information one to one.
After source terminal and secret server establish a communications link, source terminal sends data transfer request to secret server, and data transfer request comprises the IP address information of identification code and target terminal.
Secret server judges whether there is the identification information consistent with identification code in the first database.
If there is the identification information consistent with identification code in the first database, secret server transfers the instant communication data corresponding with identification information from the first database.
Secret server sends instant communication data to the target terminal corresponding with the IP address information of target terminal.
Preferably, secret server comprises after judging whether to exist the step of the identification information consistent with identification code in the first database:
If there is not the identification information consistent with identification code in the first database, secret server sends inquiry request to central server, inquiry request comprises the IP address information of identification code and target terminal, central server comprises the second database storing multiple instant communication data, and instant communication data comprises with it identification information one to one.
Central server judges whether there is the identification information consistent with identification code in the second database.
If there is the identification information consistent with identification code in the second database, central server transfers the instant communication data corresponding with identification information from the second database.
Central server sends instant communication data to the target terminal corresponding with the IP address information of target terminal.
Preferably, central server comprises after judging whether to exist the step of the identification information consistent with identification code in the second database:
If there is not the identification information consistent with identification code in the second database, central server feedback query failure information is to secret server.
After secret server receives query failure message, secret server receives the instant communication data to be sent that source terminal sends.
Instant communication data to be sent is stored to the first database by secret server.
Secret server sends instant communication data to be sent to the target terminal corresponding with the IP address information of target terminal.
Preferably, source terminal, according to after the step of IMU information data genaration identification code to be sent, comprising:
Source terminal sends communication connection request to central server, and to set up the communication connection with central server, central server comprises the second database storing multiple instant communication data, and instant communication data comprises with it identification information one to one.
After source terminal and central server establish a communications link, source terminal sends data transfer request to central server, and data transfer request comprises the IP address information of identification code and target terminal;
Central server judges whether there is the identification information consistent with identification code in the second database.
If there is the identification information consistent with identification code in the second database, central server transfers instant communication data from the second database, and instant communication data is sent to the target terminal corresponding with the IP address information of target terminal.
If there is not the identification information consistent with identification code in the second database, central server receives the instant communication data to be sent that source terminal sends, instant communication data to be sent is stored in the second database by central server, and sends instant communication data to be sent to the target terminal corresponding with the IP address information of target terminal.
Preferably, source terminal send communication connection request to secret server or source terminal send communication connection request to central server step before, comprising:
Corresponding first icon of central server of source terminal output display and the second icon of corresponding secret server.
Source terminal prompting user selects one in the first icon and the second icon.
If the icon that user chooses is the first icon, source terminal sends communication connection request to central server.
If the icon that user chooses is the second icon, source terminal sends communication connection request to secret server.
A kind of instant communication data transmission system, it comprises source terminal, secret server and target terminal.Source terminal comprises the first receiver module, generation module and the first sending module.Secret server comprises the second receiver module, module is set up in the first communication connection, the first judge module, first transfers module, the first database and the second sending module, first database purchase has multiple instant communication data, and instant communication data comprises with it identification information one to one.Generation module, for according to IMU information data to be sent and preset rules generating identification code.First sending module, for sending communication connection request to secret server, to set up the communication connection with secret server.Second receiver module, for received communication connection request.Module is set up in first communication connection, for setting up the communication connection with source terminal according to communication connection request.Second sending module, for sending communication connection successful information to source terminal.First receiver module, for received communication successful connection information.First sending module, for sending data transfer request to secret server, data transfer request comprises the IP address information of identification code and target terminal.Second receiver module, for receiving data transfer request.First judge module, for judging whether there is the identification information consistent with identification code in the first database.First transfers module, for transferring the instant communication data corresponding with identification information from the first database.Second sending module, for sending instant communication data to the target terminal corresponding with the IP address information of target terminal.
Preferably, central server comprises the 3rd receiver module, second judge module, second transfers module, the second database and the 3rd sending module, and the second database purchase has multiple instant communication data, and instant communication data comprises with it identification information one to one.Second sending module, if for there is not the identification information consistent with identification code in the first database, send inquiry request to central server, inquiry request comprises the IP address information of identification code and target terminal.3rd receiver module, for receiving inquiry request.Second judge module, for judging whether there is the identification information consistent with identification code in the second database.Second transfers module, if for there is the identification information consistent with identification code in the second database, transfer the instant communication data corresponding with identification information from the second database.3rd sending module, for sending instant communication data to the target terminal corresponding with the IP address information of target terminal.
Preferably, secret server also comprises the first memory module.Central server also comprises the second memory module.3rd sending module, if for there is not the identification information consistent with identification code in the second database, central server sends query failure message to secret server.Second receiver module, after receiving query failure message, receives the instant communication data to be sent that source terminal sends.First memory module, for being stored to the first database by instant communication data to be sent.Second sending module, for sending instant communication data to be sent to the target terminal corresponding with the IP address information of target terminal.
Preferably, central server also comprises second communication connection establishment module.First sending module, for sending communication connection request to central server, to set up the communication connection with central server.3rd receiver module, for received communication connection request.Second communication connection establishment module, for setting up the communication connection with source terminal according to communication connection request.3rd sending module, is successfully established information to source terminal for sending communication connection.First receiver module, for received communication connection establishment successful information.First sending module, for receiving after communication connection is successfully established information, send data transfer request to central server, data transfer request comprises the IP address information of identification code and target terminal.3rd receiver module, for receiving data transfer request.Second judge module, for judging whether there is the identification information consistent with identification code in the second database.Second transfers module, if for there is the identification information consistent with identification code in the second database, transfer instant communication data from the second database.3rd sending module, for being sent to the target terminal corresponding with the IP address information of target terminal by instant communication data.3rd receiver module, if for there is not the identification information consistent with identification code in the second database, receives the instant communication data to be sent that source terminal sends.Second memory module, for being stored to instant communication data to be sent in the second database.3rd sending module, for sending instant communication data to be sent to the target terminal corresponding with the IP address information of target terminal.
Preferably, source terminal also comprises output module, reminding module and communication connection selection module.Output module, for corresponding first icon of central server of output display and the second icon of corresponding secret server.Reminding module, selects one for pointing out user in the first icon and the second icon.Module is selected in communication connection, if the icon chosen for user is the first icon, source terminal sends communication connection request to central server.Module is selected in communication connection, if the icon chosen for user is the second icon, source terminal sends communication connection request to secret server.
In instant communication data transmission method of the present invention, when user selects secret server as terminal, judge whether there is the instant communication data corresponding with this identification code in the first database of secret server according to the identification code that instant communication data waiting for transmission and preset rules generate, if exist, directly send instant communication data to target terminal by secret server, so that decreasing source terminal uploads the process of instant communication data to secret server, so that improves data transmission bauds.
Accompanying drawing explanation
Fig. 1 is the block diagram of one embodiment of the present invention instant communication data transmission system.
Fig. 2 is the high-level schematic functional block diagram of source terminal in Fig. 1.
Fig. 3 is the high-level schematic functional block diagram of secret server in Fig. 1.
Fig. 4 is the high-level schematic functional block diagram of central server in Fig. 1.
Fig. 5 is the schematic flow sheet of one embodiment of the present invention instant communication data transmission method.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not used for limiting the present invention.
As shown in Figure 1 to 4, Fig. 1 is a kind of block diagram of execution mode instant communication data transmission system.Fig. 2 is the high-level schematic functional block diagram of source terminal in Fig. 1.Fig. 3 is the high-level schematic functional block diagram of secret server in Fig. 1.Fig. 4 is the high-level schematic functional block diagram of central server in Fig. 1.This instant communication data transmission system comprises source terminal 10, central server 30, secret server 20 and target terminal 40.In addition, the secret server 20 in the present invention comprises home computer.Stored by home computer by the instant communication data transmitted between source terminal and target terminal, to promote the fail safe of the data of transmission.Source terminal 10 comprises the first receiver module 100, output module 101, reminding module 102, communication connection selection module 103, generation module 104 and the first sending module 105.Secret server 20 comprises the second receiver module 200, first communication connection and sets up module 201, second judge module 202, first and transfer module 203, first database 204, first memory module 205 and the second sending module 206, first database 204 is for storing multiple instant communication data, and instant communication data comprises with it identification information one to one.Central server 30 comprises the 3rd receiver module 300, second communication connection establishment module the 301, the 3rd judge module 302, second transfers module 303, second database 304, second memory module 305 and the 3rd sending module 306, second database 304 is for storing multiple instant communication data, and instant communication data comprises with it identification information one to one.
Generation module 104, for according to IMU information data to be sent and preset rules generating identification code.First sending module 105, for sending communication connection request to secret server, to set up the communication connection with secret server.Second receiver module 200, for received communication connection request.Module 201 is set up in first communication connection, for setting up the communication connection with source terminal according to communication connection request.Second sending module 206, for sending communication connection successful information to source terminal.First receiver module 100, for received communication successful connection information.First sending module 105, for sending data transfer request to secret server, data transfer request comprises the IP address information of identification code and target terminal.Second receiver module 200, for receiving data transfer request.First judge module 202, for judging whether there is the identification information consistent with identification code in the first database.First transfers module 203, for transferring the instant communication data corresponding with identification information from the first database.Second sending module 206, for sending instant communication data to the target terminal corresponding with the IP address information of target terminal.
Second sending module 206, if for there is not the identification information consistent with identification code in the first database, send inquiry request to central server, inquiry request comprises the IP address information of identification code and target terminal.3rd receiver module 300, for receiving inquiry request.Second judge module 302, for judging whether there is the identification information consistent with identification code in the second database.Second transfers module 303, if for there is the identification information consistent with identification code in the second database, transfer the instant communication data corresponding with identification information from the second database.3rd sending module 306, for sending instant communication data to the target terminal corresponding with the IP address information of target terminal.
3rd sending module 306, if for there is not the identification information consistent with identification code in the second database, central server sends query failure message to secret server.Second receiver module 200, after receiving query failure message, receives the instant communication data to be sent that source terminal sends.First memory module 205, for being stored to the first database by instant communication data to be sent.Second sending module 206, for sending instant communication data to be sent to the target terminal corresponding with the IP address information of target terminal.
In above-mentioned instant communication data transmission system, when selecting secret server 20 as terminal, judge whether there is the instant communication data corresponding with this identification information in the first database 204 of secret server 20 according to the identification code of instant communication data waiting for transmission, if exist, directly send instant communication data to target terminal 40 by secret server 20, so that decreasing source terminal 10 uploads the process of instant communication data to secret server 20, so that improves data transmission bauds.In addition, if do not exist, send inquiry request to central server 30, judge whether there is the instant communication data corresponding with this identification information for central server 30 in the second database 304 of central server 30 according to identification code, if exist, directly send instant communication data to target terminal 40 by central server 30, so that decrease source terminal 10 and upload the process of instant communication data to secret server 20, so that improve data transmission bauds.Only under secret server 20 and all non-existent situation of central server 30, source terminal 10 is just needed to upload instant communication data to secret server 20.In addition, after source terminal 10 uploads instant communication data to secret server 20, instant first database 204 that is stored to by instant communication data is when being convenient to the identical instant communication data of subsequent transmission, reduce source terminal 10 and upload the step of instant communication data to secret server 20, so that promote data transmission bauds.
3rd receiver module 300, for received communication connection request.Second communication connection establishment module 301, for setting up the communication connection with source terminal according to communication connection request.3rd sending module 306, is successfully established information to source terminal for sending communication connection.First receiver module 100, for received communication connection establishment successful information.First sending module 105, for receiving after communication connection is successfully established information, send data transfer request to central server, data transfer request comprises the IP address information of identification code and target terminal.3rd receiver module 300, for receiving data transfer request.Second judge module 302, for judging whether there is the identification information consistent with identification code in the second database.Second transfers module 303, if for there is the identification information consistent with identification code in the second database, transfer instant communication data from the second database.3rd sending module 306, for being sent to the target terminal corresponding with the IP address information of target terminal by instant communication data.
3rd receiver module 300, if for there is not the identification information consistent with identification code in the second database, receives the instant communication data to be sent that source terminal sends.Second memory module 305, for being stored to instant communication data to be sent in the second database.3rd sending module 306, for sending instant communication data to be sent to the target terminal corresponding with the IP address information of target terminal.
In above-mentioned instant communication data transmission system, when user selects central server 30 as terminal, judge whether there is the instant communication data corresponding with this identification code in the second database 304 of central server 30 according to the identification code of instant communication data waiting for transmission, if exist, directly send instant communication data to target terminal 40 by central server 30, so that decreasing source terminal 10 uploads the process of instant communication data to central server 30, so that improves data transmission bauds.In addition, after source terminal 10 uploads instant communication data to central server 30, immediately instant communication data is stored to the second database 304, when being convenient to the identical instant communication data of subsequent transmission, reduce source terminal 10 and upload the step of instant communication data to central server 30, so that promote data transmission bauds.
Output module 101, for corresponding first icon of central server 30 of output display and the second icon of corresponding secret server 20.Reminding module 102, selects one for pointing out user in the first icon and the second icon.Module 103 is selected in communication connection, if the icon chosen for user is the first icon, source terminal 10 sends communication connection request to central server 30.Module 103 is selected in communication connection, if the icon chosen for user is the second icon, source terminal 10 sends communication connection request to secret server 20.
In above-mentioned instant communication data transmission system, user can select central server 30 or secret server 20 as terminal according to the demand of self, if user selects secret server 20 as terminal, can promote the Information Security in transmitting procedure.
As shown in Figure 5, it is a kind of schematic flow sheet of execution mode instant communication data transmission method.This instant communication data transmission method comprises the steps:
Step S1, source terminal is according to IMU information data to be sent and preset rules generating identification code.
Step S2, corresponding first icon of central server of source terminal output display and the second icon of corresponding secret server.
Step S3, source terminal prompting user selects one in the first icon and the second icon.
Step S4, source terminal judges whether the icon that user chooses is the second icon.If so, step S5 is performed.If not, step 18 is performed.
Step S5, source terminal sends communication connection request to secret server, and to set up the communication connection with secret server, secret server comprises the first database.
Step S6, after source terminal and secret server establish a communications link, source terminal sends data transfer request to secret server, and data transfer request comprises the IP address information of identification code and target terminal.
Step S7, secret server judges whether there is the identification information corresponding with identification code in the first database.If so, step S8 is performed.If not, step S10 is performed.
Step S8, secret server transfers instant communication data from the first database.
Step S9, secret server sends instant communication data to the target terminal corresponding with the IP address information of target terminal.
Step S10, secret server sends inquiry request to central server, and inquiry request comprises the IP address information of identification code and target terminal, and central server comprises the second database.
Step S11, central server judges whether there is the identification information corresponding with identification code in the second database.If so, step S12 is performed.If not, step S14 is performed.
Step S12, central server transfers instant communication data from the second database.
Step S13, central server sends instant communication data to the target terminal corresponding with the IP address information of target terminal.
Step S14, central server feedback query failure information is to secret server.
Step S15, after secret server receives query failure message, secret server receives the instant communication data that source terminal sends.
Step S16, instant communication data is stored to the first database by secret server.
Step S17, secret server sends instant communication data to the target terminal corresponding with the IP address information of target terminal.
Step S18, source terminal sends communication connection request to central server, and to set up the communication connection with central server, central server comprises the second database.
Step S19, after source terminal and central server establish a communications link, source terminal sends data transfer request to central server, and data transfer request comprises the IP address information of identification code and target terminal.
Step S20, central server judges whether there is the identification information corresponding with identification code in the second database.If so, step S21 is performed.If not, step S23 is performed.
Step S21, central server transfers instant communication data from the second database.
Step S22, central server sends instant communication data to the target terminal corresponding with the IP address information of target terminal.
Step S23, central server receives the instant communication data that source terminal sends.
Step S24, instant communication data is stored in the second database by central server.
Step S25, central server sends instant communication data to the target terminal corresponding with the IP address information of target terminal.
Be described in detail the embodiment of invention above, but it is as example, the present invention does not limit and embodiment described above.For a person skilled in the art, any equivalent modifications or alternative also all among category of the present invention that this invention is carried out, therefore, not departing from the equalization conversion and amendment, improvement etc. done under the spirit and principles in the present invention scope, all should contain within the scope of the invention.
Claims (10)
1. an instant communication data transmission method, is characterized in that, it comprises the steps:
Described source terminal is according to IMU information data to be sent and preset rules generating identification code;
Described source terminal sends communication connection request to secret server, to set up the communication connection with described secret server, described secret server comprises the first database storing multiple instant communication data, and described instant communication data comprises with it identification information one to one;
After described source terminal and described secret server establish a communications link, described source terminal sends data transfer request to described secret server, and described data transfer request comprises the IP address information of described identification code and target terminal;
Described secret server judges whether there is the described identification information consistent with described identification code in described first database;
If there is the described identification information consistent with described identification code in the first database, described secret server transfers the described instant communication data corresponding with described identification information from described first database;
Described secret server sends described instant communication data to the target terminal corresponding with the IP address information of described target terminal.
2. instant communication data transmission method according to claim 1, is characterized in that, described secret server comprises after judging whether to exist the step of the described identification information consistent with described identification code in described first database:
If there is not the described identification information consistent with described identification code in described first database, described secret server sends inquiry request to described central server, described inquiry request comprises the IP address information of described identification code and described target terminal, described central server comprises the second database storing multiple instant communication data, and described instant communication data comprises with it identification information one to one;
Described central server judges whether there is the described identification information consistent with described identification code in described second database;
If there is the described identification information consistent with described identification code in described second database, described central server transfers the described instant communication data corresponding with described identification information from described second database;
Described central server sends described instant communication data to the target terminal corresponding with the IP address information of described target terminal.
3. instant communication data transmission method according to claim 2, is characterized in that, described central server comprises after judging whether to exist the step of the described identification information consistent with described identification code in described second database:
If there is not the described identification information consistent with described identification code in described second database, described central server feedback query failure information is to described secret server;
After described secret server receives described query failure message, described secret server receives the instant communication data described to be sent that described source terminal sends;
Described instant communication data to be sent is stored to described first database by described secret server;
Described secret server sends described instant communication data to be sent to the target terminal corresponding with the IP address information of described target terminal.
4. instant communication data transmission method according to claim 1, is characterized in that, described source terminal, according to after the step of IMU information data genaration identification code to be sent, comprising:
Described source terminal sends communication connection request to described central server, to set up the communication connection with described central server, described central server comprises the second database storing multiple instant communication data, and described instant communication data comprises with it identification information one to one;
After described source terminal and described central server establish a communications link, described source terminal sends data transfer request to described central server, and described data transfer request comprises the IP address information of described identification code and described target terminal;
Described central server judges whether there is the described identification information consistent with described identification code in described second database;
If there is the described identification information consistent with described identification code in described second database, described central server transfers described instant communication data from described second database, and described instant communication data is sent to the target terminal corresponding with the IP address information of described target terminal;
If there is not the described identification information consistent with described identification code in described second database, described central server receives the instant communication data described to be sent that described source terminal sends, described instant communication data to be sent is stored in described second database by described central server, and sends described instant communication data to be sent to the target terminal corresponding with the IP address information of described target terminal.
5. the instant communication data transmission method according to claim 1 or 4, is characterized in that, described source terminal send communication connection request to secret server or described source terminal send communication connection request to described central server step before, comprising:
Corresponding first icon of central server of source terminal output display and the second icon of corresponding secret server;
Described source terminal prompting user selects one in described first icon and described second icon;
If the icon that described user chooses is described first icon, described source terminal sends described communication connection request to described central server;
If the icon that described user chooses is described second icon, described source terminal sends described communication connection request to described secret server.
6. an instant communication data transmission system, it is characterized in that, it comprises source terminal, secret server and target terminal, described source terminal comprises the first receiver module, generation module and the first sending module, described secret server comprises the second receiver module, module is set up in the first communication connection, the first judge module, first transfers module, the first database and the second sending module, described first database purchase has multiple instant communication data, and described instant communication data comprises with it identification information one to one; Described generation module, for according to IMU information data to be sent and preset rules generating identification code; Described first sending module, for sending communication connection request to secret server, to set up the communication connection with described secret server; Described second receiver module, for receiving described communication connection request; Module is set up in described first communication connection, for setting up the communication connection with described source terminal according to described communication connection request; Described second sending module, for sending communication connection successful information to described source terminal; Described first receiver module, for receiving described communication connection successful information; Described first sending module, for sending data transfer request to described secret server, described data transfer request comprises the IP address information of described identification code and target terminal; Described second receiver module, for receiving described data transfer request; Described first judge module, for judging whether there is the described identification information consistent with described identification code in described first database; Described first transfers module, for transferring the described instant communication data corresponding with described identification information from described first database; Described second sending module, for sending described instant communication data to the target terminal corresponding with the IP address information of described target terminal.
7. instant communication data transmission system according to claim 6, it is characterized in that, described central server comprises the 3rd receiver module, second judge module, second transfers module, the second database and the 3rd sending module, described second database purchase has multiple instant communication data, and described instant communication data comprises with it identification information one to one; Second sending module, if for there is not the described identification information consistent with described identification code in described first database, send inquiry request to described central server, described inquiry request comprises the IP address information of described identification code and described target terminal; 3rd receiver module, for receiving described inquiry request; Second judge module, for judging whether there is the described identification information consistent with described identification code in described second database; Second transfers module, if for there is the described identification information consistent with described identification code in described second database, transfer the described instant communication data corresponding with described identification information from described second database; 3rd sending module, for sending described instant communication data to the target terminal corresponding with the IP address information of described target terminal.
8. the instant communication data transmission system according to claim 6 or 7, it is characterized in that, described secret server also comprises the first memory module, described central server also comprises the second memory module, described 3rd sending module, if for there is not the described identification information consistent with described identification code in described second database, described central server sends query failure message to described secret server; Described second receiver module, after receiving described query failure message, receives the instant communication data described to be sent that described source terminal sends; Described first memory module, for being stored to described first database by described instant communication data to be sent; Described second sending module, for sending described instant communication data to be sent to the target terminal corresponding with the IP address information of described target terminal.
9. the instant communication data transmission system according to claim 6 or 7, it is characterized in that, described central server also comprises second communication connection establishment module, described first sending module, for sending communication connection request to described central server, to set up the communication connection with described central server; Described 3rd receiver module, for receiving described communication connection request; Described second communication connection establishment module, for setting up the communication connection with described source terminal according to described communication connection request; Described 3rd sending module, is successfully established information to described source terminal for sending described communication connection; Described first receiver module, is successfully established information for receiving described communication connection; Described first sending module, for receiving after described communication connection is successfully established information, send data transfer request to described central server, described data transfer request comprises the IP address information of described identification code and described target terminal; Described 3rd receiver module, for receiving described data transfer request; Described second judge module, for judging whether there is the described identification information consistent with described identification code in described second database; Described second transfers module, if for there is the described identification information consistent with described identification code in described second database, transfer described instant communication data from described second database; Described 3rd sending module, for being sent to the target terminal corresponding with the IP address information of described target terminal by described instant communication data; Described 3rd receiver module, if for there is not the described identification information consistent with described identification code in described second database, receives the instant communication data described to be sent that described source terminal sends; Second memory module, for being stored in described second database by described instant communication data to be sent; 3rd sending module, for sending described instant communication data to be sent to the target terminal corresponding with the IP address information of described target terminal.
10. instant communication data transmission system according to claim 6, is characterized in that, described source terminal also comprises output module, reminding module and communication connection and selects module; Described output module, for corresponding first icon of central server of output display and the second icon of corresponding secret server; Described reminding module, selects one for pointing out user in described first icon and described second icon; Module is selected in described communication connection, if the icon chosen for described user is described first icon, described source terminal sends described communication connection request to described central server; Module is selected in described communication connection, if the icon chosen for described user is described second icon, described source terminal sends described communication connection request to described secret server.
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