WO2014026493A1

WO2014026493A1 - Data transmission method, terminal and system

Info

Publication number: WO2014026493A1
Application number: PCT/CN2013/076137
Authority: WO
Inventors: 毕军; 王优; 胡虹雨; 王旸旸; 张伟
Original assignee: 华为技术有限公司; 清华大学
Priority date: 2012-08-17
Filing date: 2013-05-23
Publication date: 2014-02-20
Also published as: CN103595823B; CN103595823A

Abstract

The present invention relates to the technical field of network communications. Disclosed are a data transmission method, terminal and system, the method comprising: a first terminal invokes a local identifier layer interface via a local application layer to transmit data to a second terminal corresponding to a second identifier; mapping the second identifier to a second internet protocol (IP) address corresponding to the second terminal via a local identifier layer, and invoking a local transport layer interface to transmit the data to the second terminal corresponding to the second IP address. The present invention establishes an identifier layer between an application layer and a transport layer, utilizes the application layer to invoke an identifier layer interface, completes the mapping from an identifier to an IP address via the identifier layer, and invokes a transport layer interface to realize identifier-based data transmission between two communication ends, thus requiring no modification to an original protocol layer in a protocol stack of a terminal, and addressing the issues of difficult deployment and backward compatibility.

Description

The present invention claims the priority of a Chinese patent application filed on August 17, 2012 by the Chinese Patent Office, Application No. 201210295742.2, and entitled "Data Transmission Method, Terminal and System". The entire contents of this application are incorporated herein by reference. Technical field

The present invention relates to the field of network communication technologies, and in particular, to a data transmission method, terminal, and system. Background technique

With the continuous development of network communication technology, data transmission has received more and more attention from people because of its fast and convenient features. The use of identification and address separation mechanism to realize network data transmission in the process of data transmission is a hot issue in current Internet technology research.

In the prior art, there are two main ways to implement data transmission by using an identity and address separation mechanism: In the first method, a new module is created under the transport layer of the host end or a transport layer identifier is implemented by adding or modifying a transport layer protocol. The mapping of the protocol IP (Internet Protocol) addresses interconnected by the ID to the network, and the data transmission is implemented accordingly; the second method realizes the separation of the identifier and the address in a specific application of the application layer at the host side, and In this way, data transmission is achieved.

In the process of implementing the present invention, the inventor has found that the prior art has at least the following problems: In the first mode, since the protocol layer in the host protocol stack needs to be modified, there is a problem that the deployment is difficult; The implementation is separated from the address on a specific application, so the backward compatibility of the application cannot be satisfied. Summary of the invention

Embodiments of the present invention provide a data transmission method, terminal, and system. The technical solution is as follows:

In a first aspect, a method for data transmission is provided, the method comprising:

The first terminal sends the identifier layer interface of the local end to the second identifier through the application layer of the local end. The second terminal sends data;

Mapping the second identifier to a second corresponding to the second terminal by using an identifier layer of the local end

The IP address is sent to the second terminal corresponding to the second IP address by calling the transport layer interface of the local end.

With reference to the first aspect, in a first possible implementation manner of the first aspect, before the sending, by the application layer of the local end, the identifier layer interface of the local end to send data to the second terminal corresponding to the second identifier, the method further includes:

Sending, by the application layer of the local end, the identifier layer interface of the local end to send a connection request to the second terminal corresponding to the second identifier;

Obtaining, by the identifier layer of the local end, the second terminal corresponding to the second terminal according to the second identifier

The IP address, and the local layer's transport layer interface is called to send a connection request to the second terminal corresponding to the second IP address to establish an identifier-based connection with the second terminal.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the identifier layer of the local end acquires the second terminal corresponding to the second identifier according to the second identifier After the second IP address, it also includes:

And storing, by using the identifier layer of the local end, a mapping relationship between the second identifier of the second terminal and the second IP address in the local mapping table;

And mapping, by the identifier layer of the local end, the second identifier to the second Internet Protocol IP address corresponding to the second terminal, specifically:

Passing the identifier layer of the local end according to the second identifier and the second identifier in the local mapping table

The mapping relationship between the IP addresses maps the second identifier to a second IP address corresponding to the second terminal.

In conjunction with the first aspect, in a third possible implementation manner of the first aspect, if the local end updates the IP address, the method further includes:

Sending, by the application layer of the local end, the identifier layer interface of the local end to the second terminal, and sending a mapping update to the second terminal, where the mapping update includes the identifier corresponding to the local end and the new IP address;

Sending the mapping update message to the second terminal corresponding to the second IP address to restore the data between the second terminal and the second terminal according to the new IP address. transmission.

In a second aspect, a terminal is provided, where the terminal includes: a calling module, configured to send, by using an identifier layer interface of the local end by the application layer of the local end, data to the second terminal corresponding to the second identifier;

a mapping module, configured to map the second identifier to a second Internet Protocol IP address corresponding to the second terminal by using an identifier layer of the local end that is invoked by the calling module;

And a sending module, configured to send the data to the second terminal corresponding to the second IP address obtained by mapping by the mapping module by using the local layer's transport layer interface.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the calling module is further configured to: call, by the application layer of the local end, the identifier layer interface of the local end to the second identifier corresponding to the second identifier The terminal sends a connection request;

The mapping module is further configured to acquire, by using an identifier layer of the local end that is invoked by the calling module, a second IP address corresponding to the second terminal according to the second identifier;

The sending module is further configured to send a connection request to the second terminal corresponding to the second IP address acquired by the mapping module by using the identifier layer of the local end to call the transport layer interface of the local end, to establish a connection with the second terminal. The connection of the identifier.

With reference to the first possible implementation of the second aspect, in the second possible implementation manner of the second aspect, the terminal further includes:

a storage module, configured to, by using an identifier layer of the local end, the second identifier and the second identifier of the second terminal

The mapping relationship between IP addresses is stored in the local mapping table.

The mapping module is configured to map, by the identifier layer of the local end, the second identifier to the foregoing according to a mapping relationship between the second identifier and the second IP address in the local mapping table. The second IP address corresponding to the second terminal.

With reference to the second aspect, in a third possible implementation manner of the second aspect, the calling module is further configured to: when the local end updates the first IP address, invoke the local identifier layer interface by using the local application layer Sending a mapping update message to the second terminal, where the mapping update message includes an identifier corresponding to the local end and a new IP address;

The mapping module is configured to map the second identifier to a second IP address corresponding to the second terminal by using an identifier layer of the local end;

The sending module is further configured to send the mapping update message to the second terminal corresponding to the second IP address by using the local layer's transport layer interface to restore the new IP address according to the new IP address. Data transfer with the second terminal.

In a third aspect, a method for data transmission is provided, where the method includes: The second terminal receives the data sent by the first terminal corresponding to the first identifier by using the identifier layer interface of the local end by the application layer of the local end;

The data sent by the first terminal corresponding to the first identifier is received by the local layer's transport layer interface.

With the third aspect, in a first possible implementation manner of the third aspect, before the application layer of the local end invokes the identifier layer interface of the local end to receive the data sent by the first terminal corresponding to the first identifier, Also includes:

Receiving, by the application layer of the local end, the identifier layer interface of the local end, the connection request sent by the first terminal corresponding to the first identifier;

The connection layer sent by the first terminal corresponding to the first identifier is received by the local layer's transport layer interface to establish an identifier-based connection with the first terminal.

With the first possible implementation of the third aspect, in a second possible implementation manner of the third aspect, the application layer of the local end invokes the identifier layer interface of the local end to receive the first identifier Before the connection request sent by the first terminal, the method further includes:

The local layer's identifier layer interface is used to listen to the connection request sent by the first terminal corresponding to the first identifier.

The local layer's transport layer interface is used to listen to the connection request sent by the first terminal corresponding to the first identifier.

With the second possible implementation of the third aspect, in a third possible implementation manner of the third aspect, the identifier layer of the local end invokes the local transport layer interface to monitor the corresponding identifier of the first identifier. After the connection request sent by the first terminal, the method further includes:

Acquiring the first corresponding to the first terminal according to the first identifier by using the identifier layer of the local end

An IP address, and storing, by the identifier layer of the local end, a mapping relationship between the first identifier of the first terminal and the first IP address in a local mapping table, according to the first identifier in the local mapping table The mapping relationship between the symbol and the first IP address sends data to the first terminal corresponding to the first identifier.

With the third possible implementation of the third aspect, in a fourth possible implementation manner of the third aspect, if the first terminal updates the first IP address, the method further includes:

And receiving, by the application layer of the local end, the mapping layer interface of the local terminal, the mapping update file, the mapping identifier, the first identifier corresponding to the first terminal, and the new first IP address;

Receiving, by the identifier layer of the local end, the transport layer interface of the local end, receiving the location sent by the first terminal And mapping the update message to recover data transmission with the first terminal according to the new first IP address.

With the fourth possible implementation of the third aspect, in a fifth possible implementation manner of the third aspect, the transmitting layer interface that invokes the local end receives the location sent by the first terminal corresponding to the first IP address After the mapping update message, the method further includes:

Checking the legality of the mapping relationship between the first identifier and the new first IP address by using an identifier layer interface of the local end by the application layer of the local end;

If the check result is legal, the mapping relationship between the first identifier and the new first IP address is stored in the local mapping table by the identifier layer of the local end.

With reference to the third aspect, in a sixth possible implementation manner of the third aspect, after the transmitting layer interface that invokes the local end receives the data sent by the first terminal corresponding to the first IP address, the method further includes: The application layer directly invokes the transport layer interface of the local end to forward the data sent by the first terminal corresponding to the first identifier to the third terminal corresponding to the third identifier;

And/or, directly receiving the data sent by the third terminal corresponding to the third identifier by using the local layer's transport layer interface, and calling the third identifier layer interface of the local end through the local application layer The data sent by the terminal is forwarded to the first terminal corresponding to the first identifier.

In a fourth aspect, a terminal is provided, where the terminal includes:

a calling module, configured to receive, by using an identifier layer interface of the local end, the data sent by the first terminal corresponding to the first identifier by using an application layer of the local end;

The receiving module is configured to receive, by using the identifier layer of the local end that is invoked by the calling module, the data transmitted by the first terminal corresponding to the first identifier obtained by mapping the mapping module by using the transport layer interface of the local end.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the calling module is further configured to receive, by using an identifier layer interface of the local end by the application layer of the local end, the first identifier corresponding to the first identifier. a connection request sent by the terminal;

The receiving module is further configured to: receive, by using an identifier layer of the local end, the connection layer interface of the local end to receive a connection request sent by the first terminal corresponding to the first identifier, to establish an identifier-based connection with the first terminal. .

In conjunction with the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the calling module is further configured to: listen to the identifier by using an identifier layer interface of the local end by using an application layer of the local end The connection request sent by the first terminal corresponding to the first identifier;

The receiving module is further configured to invoke the local transport layer interface monitoring device by using the identifier layer of the local end. a connection request sent by the first terminal corresponding to the first identifier.

With reference to the second possible implementation of the fourth aspect, in a third possible implementation manner of the fourth aspect, the terminal further includes:

An acquiring module, configured to acquire, by using an identifier layer of the local end, the first IP address corresponding to the first terminal according to the first identifier;

a storage module, configured to store, by using an identifier layer of the local end, a mapping relationship between the first identifier of the first terminal and the first IP address obtained by the acquiring module in a local mapping table, according to the local The mapping relationship between the first identifier and the first IP address in the mapping table sends data to the first terminal corresponding to the first identifier.

With the third possible implementation of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the calling module is further configured to: if the first terminal updates the first IP address, The application layer of the local end invokes the identifier layer interface of the local end to receive the mapping update packet sent by the first terminal.

The receiving module is further configured to: call the transport layer interface of the local end to receive the mapping update packet sent by the first terminal, to recover data between the first terminal and the first terminal according to the new first IP address. transmission.

With reference to the fourth possible implementation manner of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the terminal further includes:

The checking module is configured to check the legality of the mapping relationship between the first identifier and the new first IP address by using an identifier layer interface of the local end by the application layer of the local end;

The storage module is further configured to store the mapping relationship between the first identifier and the new first IP address in a local mapping table by using an identifier layer of the local end, if the check result is legal.

With reference to the fourth aspect, in a sixth possible implementation manner of the fourth aspect, the terminal further includes:

a forwarding module, configured to forward, by the application layer of the local end, the data sent by the first terminal corresponding to the first identifier to the third terminal corresponding to the third identifier; and/or Receiving, by the application layer of the local end, the data of the third terminal corresponding to the third identifier is directly received by the local layer, and the third terminal is sent by using the identifier layer of the local end by the application layer of the local end. The data is forwarded to the first terminal corresponding to the first identifier.

The fifth aspect, further provides a system for data transmission, where the system includes: a first terminal and a second terminal; The first terminal is the terminal according to the second aspect above;

The second terminal is the terminal according to the above fourth aspect.

The beneficial effects brought by the technical solutions provided by the embodiments of the present invention are:

By establishing an identifier layer between the application layer and the transport layer, and using the application layer to call the identifier layer interface, the identifier layer is mapped to the IP address by the identifier layer, and the transport layer interface is called to implement the identifier-based communication between the two parties. Data transmission eliminates the need to modify the original protocol layer in the terminal protocol stack, solving the problem of difficult deployment and backward compatibility. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a schematic diagram of a protocol stack of a terminal according to an embodiment of the present invention;

2 is a flowchart of a first method for data transmission according to an embodiment of the present invention;

3 is a flowchart of a second method for data transmission according to an embodiment of the present invention;

4 is a flowchart of a third method for data transmission according to another embodiment of the present invention;

FIG. 5 is a flowchart of a fourth method for data transmission according to another embodiment of the present invention; FIG.

6 is a schematic structural diagram of a first terminal according to another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a second terminal according to another embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of a third terminal according to another embodiment of the present invention; FIG.

9 is a schematic structural diagram of a fourth terminal according to another embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a fifth terminal according to another embodiment of the present invention; FIG.

FIG. 11 is a schematic structural diagram of a sixth terminal according to another embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a system for data transmission according to another embodiment of the present invention. detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Embodiments of the present invention provide a data transmission method, which implements separation of an IP address and an identifier by establishing an identifier layer between an application layer and a transport layer in a terminal protocol stack. among them, The schematic diagram of the terminal protocol stack is shown in Figure 1. In Figure 1, the identifier layer provides a new API (Application Programming Interface) to the application layer App, enabling the application layer to initiate a session based on the identifiers of the communicating parties. The identifier layer maintains the session and maps the identifier to the corresponding IP address to establish and manage the transport layer connection so that the transport layer still transmits data based on the IP address. Based on the terminal protocol stack shown in FIG. 1, this embodiment uses the first terminal to send data to the second terminal as an example, and illustrates a method for data transmission. Referring to FIG. 2, the process of the method provided in this embodiment is specifically as follows:

201: The first terminal sends the data to the second terminal corresponding to the second identifier by using the identifier layer interface of the local end by the application layer of the local end;

Further, before the application layer of the local end invokes the identifier layer of the local end to send data to the second terminal corresponding to the second identifier, the method further includes:

Sending a connection request to the second terminal corresponding to the second identifier by using the local layer identifier layer interface by the local application layer;

Obtaining, by the identifier layer of the local end, the second IP address corresponding to the second terminal according to the second identifier, and calling the transport layer interface of the local end to send a connection request to the second terminal corresponding to the second IP address, to establish a connection with the second terminal. The connection of the identifier.

Further, obtaining, by the identifier layer of the local end, the second terminal corresponding to the second terminal according to the second identifier

After the IP address, it also includes:

The mapping relationship between the second identifier of the second terminal and the second IP address is stored in the local mapping table by using the identifier layer of the local end;

Mapping the second identifier to the second internet protocol corresponding to the second terminal by using the identifier layer of the local end

IP address, including:

The second identifier is mapped to the second IP address corresponding to the second terminal by the identifier layer of the local end according to the mapping relationship between the second identifier and the second IP address in the local mapping table.

202: The second identifier is mapped to the second IP address corresponding to the second terminal by using the identifier layer of the local end, and the data of the local end is sent to the second terminal corresponding to the second IP address.

Further, if the local end updates the IP address, the method further includes:

The local layer's identifier layer interface is used to send a mapping update message to the second terminal, and the mapping update includes the identifier corresponding to the local end and the new IP address.

The second identifier is mapped to the second IP address corresponding to the second terminal by the identifier layer of the local end, and the mapping update interface is sent to the second terminal corresponding to the second IP address by using the transport layer interface of the local end. To recover data transmission with the second terminal according to the new IP address.

Based on the terminal protocol stack shown in FIG. 1, this embodiment uses the second terminal to receive the data sent by the first terminal as an example, and illustrates a method for data transmission. Referring to FIG. 3, the process of the method provided in this embodiment is specifically as follows:

301: The second terminal receives the data sent by the first terminal corresponding to the first identifier by using the identifier layer interface of the local end by the application layer of the local end;

Further, before the application layer of the local end calls the identifier layer interface of the local end to receive the data sent by the first terminal corresponding to the first identifier, the method further includes:

Further, before the application layer of the local end calls the identifier layer interface of the local end to receive the connection request sent by the first terminal corresponding to the first identifier, the method further includes:

Further, after the local layer's transport layer interface is used to listen to the connection request sent by the first terminal corresponding to the first identifier, the identifier layer of the local end further includes:

Obtaining, by the identifier layer of the local end, the first IP address corresponding to the first terminal according to the first identifier, and connecting the first identifier of the first terminal with the first IP address by using the identifier layer of the local end The mapping relationship is stored in the local mapping table to send data to the first terminal corresponding to the first identifier mapping according to the mapping relationship between the first identifier and the first IP address in the local mapping table.

302: The local layer's transport layer interface is used to receive data sent by the first terminal corresponding to the first identifier by using the identifier layer of the local end.

Further, if the first terminal updates the first IP address, the method further includes:

Receiving, by the local application layer, the identifier layer interface of the local end, the mapping update sent by the first terminal, where the mapping update text includes the first identifier corresponding to the first terminal and the new first IP address; The layer invokes the transport layer interface of the local end to receive the mapping update packet sent by the first terminal, to recover the data transmission with the first terminal according to the new first IP address. Further, after the calling the transport layer interface of the local end receives the mapping update packet sent by the first terminal corresponding to the first IP address, the method further includes:

The local layer's identifier layer interface is used to check the legality of the mapping relationship between the first identifier and the new first IP address.

If the check result is legal, the mapping relationship between the first identifier and the new first IP address is stored in the local mapping table through the identifier layer of the local end.

Further, after the calling the transport layer interface of the local end receives the data sent by the first terminal corresponding to the first IP address, the method further includes:

The data sent by the first terminal corresponding to the received first identifier is forwarded to the third terminal corresponding to the third identifier by directly calling the local layer's transport layer interface;

And/or, the local layer of the transport layer directly calls the local end of the transport layer interface to receive the data sent by the third terminal corresponding to the third identifier, and the local layer's identifier layer interface is used to send the data sent by the third terminal through the local application layer. Forwarding to the first terminal corresponding to the first identifier.

The method provided by the embodiment of the present invention completes the mapping of the identifier to the IP address by the identifier layer by establishing an identifier layer between the application layer and the transport layer, and calling the identifier layer interface by using the application layer, and calling the transport layer. The interface implements identifier-based data transmission between the two communicating parties, thereby eliminating the need to modify the original protocol layer in the terminal protocol stack, thereby solving the problem of difficulty in deployment and backward compatibility. Another embodiment of the present invention provides a method for data transmission. For convenience of description, the present embodiment combines the contents of the foregoing embodiment and the protocol stack diagram shown in FIG. 1 to lay out the terminal A and the layout of the identifier layer. The data is transmitted between the terminal B of the identifier layer, and the identifier of the terminal A is the identifier A, the IP address of the terminal A is the address A, the identifier of the terminal B is the identifier B, and the IP address of the terminal B is the address B. For example, the method for data transmission provided in this embodiment is exemplified. Before describing the method provided by this embodiment, the identifier layer in the protocol stack is first described in conjunction with the protocol stack shown in FIG. The identifier layer provides the following functions in order to implement the mapping of identifiers to IP addresses and to establish and manage transport layer connections:

IDLookup: The argument to this function is an identifier. The function is configured to send a mapping query request to the mapping server according to the input identifier, and obtain an IP address corresponding to the current identifier of the identifier, and cache the mapping table;

IDUpdate: The parameters of this function are the identifier and the corresponding IP address. The function is used to send a mapping update request to a communication peer or a mapping server; IDCheck: The parameters of this function are the identifier and the corresponding IP address. This function is used to complete the RR (Return Routability) process and check the legality of the correspondence between the two. If the relationship is legal, the identifier and the corresponding IP address are cached into the mapping table.

IDSocket: The parameters of this function include the protocol cluster used, the transport layer protocol, and so on. This function is used to create an identifier-based session Socket, which maintains the session-related data of both parties, including the identifiers, ports, IP addresses, etc., and calls the Socket function in the traditional Socket interface.

IDBind: The parameters of this function include local identifier, local port, local IP (optional). This function is used to call the Bind function in the traditional Socket interface with the obtained local Port and IP;

IDConnect: The parameters of this function include local identifier, peer identifier, peer port, peer

IP (optional). If the user does not specify the peer IP address, then the identifier-to-IP mapping query needs to be completed here, that is, the UIDLookup function is called. This function is used to call the Connect function in the traditional Socket interface by using the obtained peer port and IP, and needs to inform the peer of its own identifier (such as using an IPv6 extension header);

IDListen: This function is used to call the Listen function in the traditional Socket interface.

IDAccept: This function is used to obtain the identifier of the peer, check its legality, and call the Accept function in the traditional Socket interface.

IDWrite: This function is used to send data to the peer. The packet needs to carry its own identifier (such as using the IPv6 extension header), and call the Write function in the traditional Socket interface.

IDRead: This function is used to receive data from the peer and call the Read function in the traditional Socket interface.

In conjunction with the function provided by the identifier layer, referring to FIG. 4, the method flow provided by this embodiment is specifically: 3⁄4:

401: terminal A sends a connection request to terminal B corresponding to identifier B by calling the identifier layer interface of terminal A through the application layer of terminal A;

For the specific implementation, the ID socket function and the IDBind function in the identifier layer of the terminal A may be first invoked by the application layer of the terminal A to initialize the identifier layer interface of the terminal A, and then the terminal A passes the terminal. The application layer of A calls the identifier layer interface IDSocket of the terminal A to send a connection request to the terminal B corresponding to the identifier B.

The identifier layer interface IDSocket of the terminal A can be analogized to the traditional Socket interface, so that the application layer is equivalent to providing a new API. 402: The identifier layer of the terminal A acquires the address B corresponding to the terminal B according to the identifier B, and invokes the transport layer interface of the terminal A to send a connection request to the terminal B corresponding to the address B.

Specifically, after the application layer of the terminal A invokes the identifier layer interface of the terminal A in the foregoing step 401, in order to invoke the transport layer interface, the identifier layer can obtain the address B corresponding to the terminal B through the identifier layer function IDLookup of the terminal A, Then, the function IDConnect is called, and the function IDConnect uses the port B of the terminal B and the address B corresponding to the terminal B to call the Connect function in the traditional transport layer Socket interface, and completes the operation of sending a connection request to the terminal B corresponding to the address B, in the connection request. Carrying the identifier of the terminal A itself.

The function IDLookup sends a mapping query request to the mapping server according to the identifier B of the terminal B, so as to obtain the address B corresponding to the identifier, and the process of obtaining the address B corresponding to the terminal B is repeated. After the terminal A obtains the address B corresponding to the terminal B for the first time, the mapping relationship between the identifier B and the address B of the terminal B can be stored in the local mapping table, so that the next direct mapping table will be used. The identifier B is mapped to the address B.

403: The terminal B uses the identifier layer interface of the terminal B to listen to the connection request sent by the terminal A corresponding to the identifier A through the application layer of the terminal B;

For this step, as the data receiver, in order to listen to the connection request sent by the terminal A, the terminal B can use the ID socket function in the identifier layer interface of the terminal B of the terminal B to implement the terminal A corresponding to the interception identifier A. Connection request.

404: The terminal B invokes the transport layer interface of the terminal B through the identifier layer of the terminal B to listen to the connection request sent by the terminal A corresponding to the identifier A.

Specifically, after the identifier layer interface of the terminal B is invoked by the application layer, the identifier layer of the terminal B invokes the transport layer interface of the terminal B to listen to the connection request sent by the terminal A corresponding to the identifier A. The function IDlisten is called, and the listen function in the transport layer Socket interface of the terminal B is called by the function IDListen to listen to the connection request sent by the terminal A corresponding to the address A.

In addition, after the listener function in the transport layer interface is called by the identifier layer to listen to the connection request sent by the terminal A corresponding to the identifier A, if the connection request sent by the terminal A is detected, the method provided in this embodiment further includes: The step of obtaining the address A corresponding to the terminal A according to the identifier A by the identifier layer of the terminal B. In the specific implementation, the function IDLookup can be called by the identifier layer of the terminal B, and the function IDLookup is used according to the identifier A of the terminal A. The local mapping server sends a mapping query request, and obtains the address A corresponding to the current identifier A, and in order to enable the transmission of data to the terminal A after the establishment of the identifier-based connection with the terminal A, and avoids duplication The process of obtaining the address A corresponding to the terminal A is performed. After obtaining the address A corresponding to the terminal A, the step further includes storing the mapping relationship between the identifier A of the terminal A and the address A through the identifier layer of the terminal B. The step of mapping the table locally, so that the terminal B can send data to the terminal A corresponding to the identifier A according to the mapping relationship between the identifier A and the address A in the local mapping table.

405: The terminal B receives the connection request sent by the terminal A corresponding to the identifier A by using the identifier layer interface of the terminal B through the application layer of the terminal B;

For this step, after the connection request sent by the terminal A is sent to the terminal B, the terminal B receives the connection request sent by the terminal A corresponding to the identifier A through the identifier layer interface IDSocket of the terminal B through the application layer of the terminal B.

406: The terminal B receives the connection request sent by the terminal A corresponding to the identifier A by calling the transport layer interface of the terminal B through the identifier layer of the terminal B.

Specifically, since the foregoing step 404 has acquired the address A corresponding to the terminal A and stores it in the local mapping table, the terminal B receives the identifier through the identifier layer interface of the terminal B through the application layer of the terminal B in step 405. After the connection request sent by the terminal A corresponding to A, in the step 406, the method provided in this embodiment receives the connection request sent by the terminal A corresponding to the identifier A by calling the transport layer interface of the terminal B through the identifier layer of the terminal B. Previously, it also includes an operation of checking the validity of the identifier A. If the check result is legal, the function IDAccept is called by the identifier layer, and the Accept function in the transport layer Socket interface of the terminal B is called by the function IDAccept to receive the identifier A. The connection request sent by terminal A.

It should be noted that the above steps 401 to 406 are specific procedures for establishing an identifier-based connection between the terminal A and the terminal B. After the identifier-based connection is established, the identifier-based multiple data transmission can be performed between the terminal A and the terminal B without interruption of the connection, without re-establishing the identifier every time data transmission is performed. The connection, that is, the operation of the above steps 401 to 406 is performed only before the terminal A and the terminal B transmit data for the first time or after the connection is interrupted.

407: terminal A sends data to terminal B corresponding to identifier B through the identifier layer interface of terminal A through the application layer of terminal A;

For this step, after performing the above steps 401 to 406, that is, the terminal A and the terminal B have established an identifier-based connection, the communication parties can perform data transmission and reception based on the identifier. When the terminal A sends the data to the terminal B corresponding to the identifier B through the application layer of the terminal A, the terminal A can call the identifier layer interface ID socket of the terminal A to the identifier through the application layer of the terminal A. Terminal B corresponding to B transmits data. 408: The terminal A maps the identifier B to the address B corresponding to the terminal B through the identifier layer of the terminal A, and calls the transport layer interface of the terminal A to send the data to the terminal B corresponding to the address B.

Specifically, since the terminal B has obtained the address B corresponding to the terminal B in the above step 402 and stores it in the local mapping table, the terminal A invokes the identifier layer interface of the terminal A through the application layer of the terminal A in step 407. After transmitting the data to the terminal B corresponding to the identifier B, in order to implement the transmission of the data, in step 408, the terminal A can map the identifier B to the address B corresponding to the terminal B through the identifier layer of the terminal A, that is, through the terminal A. The identifier layer maps the identifier B to the address B corresponding to the terminal B according to the mapping relationship between the identifier B and the address B in the local mapping table. Then, the function IDWrite is called through the identifier layer, and the function of the call layer Socket interface of the terminal A is called by the function IDWrite to send the data to the terminal B corresponding to the address B.

409: The terminal B receives the data sent by the terminal A corresponding to the identifier A by using the identifier layer interface of the terminal B through the application layer of the terminal B;

For this step, after the step 408 is executed, if the data sent by the terminal A is sent to the terminal B, the terminal B can send the terminal A corresponding to the identifier A through the identifier layer interface ID socket of the terminal B through the application layer of the terminal B. The data.

410: The terminal B receives the data sent by the terminal A corresponding to the identifier A by calling the transport layer interface of the terminal B through the identifier layer of the terminal B.

Specifically, in step 409, after the terminal B receives the data sent by the terminal A corresponding to the identifier A through the identifier layer interface of the terminal B, the terminal B can call the function IDRead through the identifier layer, and the function IDRead The Read function in the transport layer Socket interface of the calling terminal B receives the data sent by the terminal A corresponding to the identifier A, and thus, the data transmission between the terminal A in which the identifier layer is laid out and the terminal B in which the identifier layer is laid out is realized. .

Further, after the terminal A and the terminal B establish an identifier-based connection, if the terminal A or the terminal B updates the IP address, in order to enable the data transmission between the terminal A and the terminal B, the IP address needs to be updated. The terminal notifies the peer end of the updated IP address to recover the data transmission with the peer end according to the new IP address. For the sake of understanding, the terminal A is updated from the original address A to the address A. For example, the method provided in this embodiment further includes the following steps:

Step a: Terminal A sends a mapping update message to terminal B through the identifier layer interface IDSocket of terminal A through the application layer of terminal A, and the mapping update includes the identifier and address corresponding to terminal A;

Step b: The terminal A passes the identifier layer of the terminal A according to the identifier B and the ground in the local mapping table. The mapping relationship between the addresses B maps the identifier B to the address B corresponding to the terminal B. Then, the function IDUpdate is called by the identifier layer, and the Update function in the transport layer Socket interface of the terminal A is called by the function IDUpdate to send the map update message to the terminal B corresponding to the address B.

Step C: The terminal B receives the mapping update message sent by the terminal A by using the identifier layer interface IDSocket of the terminal B through the application layer of the terminal B, and the mapping update includes the identifier A and the address A corresponding to the terminal A,

Step d: Terminal B calls the function IDAccept through the identifier layer of the terminal B, and the function IDAccept obtains the identifier of the terminal A, and checks its legality. If the check result is legal, the Accept function in the traditional transport layer Socket interface is called to receive the address A. Corresponding mapping update message sent by terminal A to recover data transmission with terminal A according to new address A.

The method provided by the embodiment of the present invention completes the mapping of the identifier to the IP address by the identifier layer by establishing an identifier layer between the application layer and the transport layer, and calling the identifier layer interface by using the application layer, and calling the transport layer. The interface implements identifier-based data transmission between the two communicating parties, thereby eliminating the need to modify the original protocol layer in the terminal protocol stack, thereby solving the problem of difficulty in deployment and backward compatibility. Another embodiment of the present invention provides a data transmission method. For convenience of description, this embodiment combines the contents of the foregoing embodiment and the protocol stack diagram shown in FIG. 1 to deploy an identifier layer, terminal B, with terminal A. The identifier layer is not deployed, and the identifier-based connection is established between the terminal A and the terminal node C on which the identifier layer is deployed, and the TCP (Transmission Control Protocol) is established between the terminal C and the terminal B. The method of data transmission provided by the embodiment of the present invention is exemplified by a method of transmitting data between the terminal A and the terminal B by using the terminal C as an example of a transport layer connection such as a UDP (User Datagram Protocol). The identifier corresponding to the proxy node C is the identifier C, and the IP address is the address C. The terminal A and the terminal A establish an identifier-based connection in the same manner as the terminal A in the foregoing embodiment. A manner of establishing an identifier connection with the terminal B, and a method of establishing a transport layer connection such as a TCP or a UDP between the terminal C and the terminal B may be implemented by using an existing connection establishment manner, which is not specifically limited in this embodiment. . Referring to FIG. 5, the process of the method provided in this embodiment is specifically as follows:

501: The terminal A sends the data to the terminal C corresponding to the identifier C through the identifier layer interface of the terminal A through the application layer of the terminal A; after the identifier-based connection is established between the terminal A and the terminal C, the communication parties can be based on the identifier. get on The transmission and reception of data. Here, the terminal A can transmit data to the terminal C corresponding to the identifier C through the identifier layer interface IDSocket of the terminal A through the application layer of the terminal A.

502: Terminal A maps the identifier C to the IP address C corresponding to the terminal C through the identifier layer of the terminal A, and calls the transport layer interface of the terminal A to send the data to the terminal C corresponding to the address C.

Specifically, in the process of establishing the identifier connection between the terminal A and the terminal C, the terminal A has acquired the address C corresponding to the terminal C, and stores it in the local mapping table. In step 501, the terminal A passes the terminal A. After the application layer calls the identifier layer interface of the terminal A to transmit the data to the terminal C corresponding to the identifier C, in order to implement the transmission of data, in step 502, the terminal A can map the identifier C to the terminal through the identifier layer of the terminal A. The address C corresponding to C, that is, the identifier C of the terminal A is mapped to the address C corresponding to the terminal C according to the mapping relationship between the identifier C and the address C in the local mapping table. Then, the function IDWrite is called through the identifier layer, and the transfer function of the terminal A is called by the function IDWrite. The Write function in the Socket interface sends the data to the terminal C corresponding to the address C.

503: The terminal C receives the data sent by the terminal A corresponding to the identifier A through the identifier layer interface of the terminal C through the application layer of the terminal C.

For this step, after the step 502 is performed, if the data sent by the terminal A is sent to the terminal C, the terminal C can send the terminal A corresponding to the identifier A through the identifier layer interface IDSocket of the terminal C of the application layer of the terminal C. The data.

504: The terminal C receives the data sent by the terminal A corresponding to the identifier A by using the identifier layer of the terminal C to invoke the transport layer interface of the terminal C.

Specifically, in step 503, after the terminal C receives the data sent by the terminal A corresponding to the identifier A through the identifier layer interface of the terminal C of the application C of the terminal C, in order to implement the received data, in step 504, the terminal C may The function IDRead is called by the identifier layer, and the Read function in the transport layer Socket interface of the terminal C is called by the function IDRead to receive the data sent by the terminal A corresponding to the address A. Thus, the terminal A and the layout identifier of the identifier layer are realized. Data transfer between terminals C of the layer.

505: The terminal C directly calls the transport layer interface of the terminal C to forward the data sent by the terminal A corresponding to the identifier A to the identifier B, and the corresponding terminal B, through the application layer of the terminal C.

For this step, in the above step 504, the terminal C calls the function IDRead through the identifier layer of the terminal C, and the Read function in the transport layer Socket interface of the terminal C is called by the function IDRead to receive the data sent by the terminal A corresponding to the address A, as The proxy node, since the traditional transport layer connection has been established between the terminal C and the terminal B, the terminal C can be directly adjusted through the application layer of the terminal C. The data sent by the terminal A corresponding to the received identifier A is forwarded to the identifier B, the corresponding terminal B, by using the transport layer Socket interface of the terminal C.

In addition, the terminal C can also directly call the transport layer Socket interface of the terminal C to receive the identifier B, the corresponding terminal B, the transmitted data, and call the identifier of the terminal C through the application layer of the terminal C through the application layer of the terminal C. The symbol IDSocket interface forwards the data sent by the terminal B to the terminal A corresponding to the identifier A, thereby realizing the transmission of data between the terminal A and the terminal B.

It should be noted that, in the communication process, any one of the terminal A and the terminal C may also update the IP address, and in this case, the processing mode and the communication terminal in the above embodiment generate IP. The address update is performed in the same manner. For details, refer to the related description in step 410 in the foregoing embodiment.

The method provided by the embodiment of the present invention completes the mapping of the identifier to the IP address by the identifier layer by establishing an identifier layer between the application layer and the transport layer, and calling the identifier layer interface by using the application layer, and calling the transport layer. The interface implements identifier-based data transmission between the two communicating parties, thereby eliminating the need to modify the original protocol layer in the terminal protocol stack, thereby solving the problem of difficulty in deployment and backward compatibility. Another embodiment of the present invention provides a first type of terminal, which is used to perform the functions performed by the terminal that sends data in the foregoing embodiment. Referring to FIG. 6, the terminal 60 includes:

The calling module 61 is configured to send the data to the second terminal corresponding to the second identifier by using the identifier layer interface of the local end by the application layer of the local end;

The mapping module 62 is configured to map the second identifier to the second IP address corresponding to the second terminal by using the identifier layer of the local end that is invoked by the calling module 61;

The sending module 63 is configured to send the data to the second terminal corresponding to the second IP address mapped by the mapping module 62 by using the local layer's transport layer interface.

Further, the calling module 61 is further configured to send a connection request to the second terminal corresponding to the second identifier by using the identifier layer interface of the local end by the application layer of the local end;

The mapping module 62 is further configured to acquire, by using the identifier layer of the local end, the calling module 61, the second IP address corresponding to the second terminal according to the second identifier;

The sending module 63 is further configured to send a connection request to the second terminal corresponding to the second IP address acquired by the mapping module 62 by using the identifier layer of the local end to invoke the transport layer interface of the local end, to establish an identifier-based connection with the second terminal. .

Referring to FIG. 7, the terminal 70 further includes: a storage module 64, configured to store, by using an identifier layer of the local end, a mapping relationship between the second identifier of the second terminal and the second IP address into the local mapping table;

The mapping module 62 is configured to map the second identifier to the second IP address corresponding to the second terminal according to the mapping relationship between the second identifier and the second IP address in the local mapping table by the identifier layer of the local end.

Further, the calling module 61 is further configured to: if the local end updates the first IP address, send the mapping update to the second terminal by using the identifier layer interface of the local end by the application layer of the local end, and the mapping update includes the local end. Corresponding identifier and new IP address;

The mapping module 62 is configured to map the second identifier to the second IP address corresponding to the second terminal by using the identifier layer of the local end;

The sending module 63 is further configured to send the mapping update message to the second terminal corresponding to the second IP address by using the local layer's transport layer interface to restore the relationship between the second terminal and the second terminal according to the new IP address. data transmission.

The terminal provided by the embodiment of the present invention completes the mapping of the identifier to the IP address by the identifier layer by establishing an identifier layer between the application layer and the transport layer, and calling the identifier layer interface by using the application layer, and calling the transport layer. The interface implements identifier-based data transmission between the two communicating parties, thereby eliminating the need to modify the original protocol layer in the terminal protocol stack, thereby solving the problem of difficulty in deployment and backward compatibility. Another embodiment of the present invention provides a first terminal, where the terminal includes:

a transmitter, configured to send data to the second terminal corresponding to the second identifier by using an identifier layer interface of the local end by using an application layer of the local end;

a processor, configured to map the second identifier to a second Internet Protocol IP address corresponding to the second terminal by using an identifier layer of the local end;

The transmitter is further configured to send the data of the local end to send the data to the second terminal corresponding to the second IP address.

Further, the transmitter is further configured to send a connection request to the second terminal corresponding to the second identifier by using an identifier layer interface of the local end by using an application layer of the local end;

The processor is further configured to obtain, by using the identifier layer of the local end, the second IP address corresponding to the second terminal according to the second identifier;

The transmitter is further configured to send a connection request to the second terminal corresponding to the second IP address by using the local transport layer interface to establish an identifier-based connection with the second terminal. Further, the processor is further configured to store the mapping relationship between the second identifier of the second terminal and the second IP address in the local mapping table by using the identifier layer of the local end; and according to the local mapping table by using the identifier layer of the local end The mapping relationship between the second identifier and the second IP address maps the second identifier to a second IP address corresponding to the second terminal.

Further, the processor is further configured to send, by using an identifier layer interface of the local end, the mapping update interface of the local end to the second terminal, where the mapping update includes the identifier corresponding to the local end and the new IP address; The second identifier is mapped to the second IP address corresponding to the second terminal by the identifier layer of the local end; the transmitter is further configured to send the mapping update interface of the local end to send the mapping update packet to the second corresponding to the second IP address. The terminal, to recover data transmission with the second terminal according to the new IP address.

The terminal provided by the embodiment of the present invention completes the mapping of the identifier to the IP address by the identifier layer by establishing an identifier layer between the application layer and the transport layer, and calling the identifier layer interface by using the application layer, and calling the transport layer. The interface implements identifier-based data transmission between the two communicating parties, thereby eliminating the need to modify the original protocol layer in the terminal protocol stack, and solving the problem of difficulty in deployment and backward compatibility. Another embodiment of the present invention provides a second terminal, which is used to perform the functions performed by the terminal that receives data in the foregoing embodiment. Referring to FIG. 8, the terminal 80 includes:

The calling module 81 is configured to receive, by using an identifier layer interface of the local end, the data sent by the first terminal corresponding to the first identifier by the application layer of the local end;

The receiving module 82 is configured to receive the data sent by the first terminal corresponding to the first identifier by using the local layer identifier layer of the local end called by the calling module 81.

Further, the calling module 81 is further configured to: receive, by the application layer of the local end, the identifier layer interface of the local end to receive the connection request sent by the first terminal corresponding to the first identifier;

The receiving module 82 is further configured to receive, by using the identifier layer of the local end, the connection layer interface of the local end to receive the connection request sent by the first terminal corresponding to the first identifier, to establish an identifier-based connection with the first terminal.

Further, the calling module 81 is further configured to, by using an application layer of the local end, invoke the identifier layer interface of the local end to listen to the connection request sent by the first terminal corresponding to the first identifier;

The receiving module 82 is further configured to, by using the identifier layer of the local end, invoke the transport layer interface of the local end to listen to the connection request sent by the first terminal corresponding to the first identifier.

Referring to Figure 9, terminal 90 also includes:

The obtaining module 83 is configured to obtain, by using the identifier layer of the local end, the first terminal corresponding to the first identifier. First IP address;

The storage module 84 is configured to store, by using the identifier layer of the local end, a mapping relationship between the first identifier of the first terminal and the first IP address obtained by the obtaining module 83 in the local mapping table, according to the local mapping table. The mapping relationship between the identifier and the first IP address sends data to the first terminal corresponding to the first identifier.

Further, the calling module 81 is further configured to: if the first terminal updates the first IP address, the application layer of the local end invokes the identifier layer interface of the local end to receive the mapping update message sent by the first terminal; the mapping module 82 is configured to pass The identifier layer of the local end maps the first identifier to the first IP address corresponding to the first terminal;

The receiving module 83 is further configured to: call the transport layer interface of the local end to receive the mapping update packet sent by the first terminal corresponding to the first IP address, to recover the data transmission with the first terminal according to the new first IP address.

Referring to FIG. 10, the terminal 100 further includes:

The checking module 85 is configured to check the legality of the mapping relationship between the first identifier and the new first IP address by using the local layer identifier layer interface by the application layer of the local end;

The storage module 84 is further configured to store the mapping relationship between the first identifier and the new first IP address in the local mapping table by using the identifier layer of the local end, if the check result is legal.

Referring to FIG. 11, the terminal 110 further includes:

The forwarding module 86 is configured to directly forward the data sent by the first terminal corresponding to the received first identifier to the third terminal corresponding to the third identifier by using the local layer of the local layer; and/or The data layer sent by the third terminal corresponding to the third identifier is directly received by the application layer of the local end, and the data sent by the third terminal is forwarded to the first through the identifier layer of the local end by the application layer of the local end. The first terminal corresponding to the identifier.

The terminal provided by the embodiment of the present invention completes the mapping of the identifier to the IP address by the identifier layer by establishing an identifier layer between the application layer and the transport layer, and calling the identifier layer interface by using the application layer, and calling the transport layer. The interface implements identifier-based data transmission between the two communicating parties, thereby eliminating the need to modify the original protocol layer in the terminal protocol stack, thereby solving the problem of difficulty in deployment and backward compatibility. Another embodiment of the present invention provides a second terminal, where the terminal includes:

The receiver is configured to receive the data sent by the first terminal corresponding to the first identifier by using the identifier layer interface of the local end by the application layer of the local end; and receive the transmission layer interface of the local end by using the identifier layer of the local end The data sent by the first terminal corresponding to the first identifier.

Further, the receiver is further configured to receive the connection request sent by the first terminal corresponding to the first identifier by using the identifier layer interface of the local end by the application layer of the local end, and receive the first transmission layer interface by using the identifier layer of the local end. A connection request sent by the first terminal corresponding to the identifier to establish an identifier-based connection with the first terminal.

The processor is configured to: listen to the connection request sent by the first terminal corresponding to the first identifier by using the identifier layer interface of the local end by the application layer of the local end; and invoke the transport layer interface of the local end to listen to the first identifier by using the identifier layer of the local end The connection request sent by the first terminal.

Further, the processor is further configured to acquire, by using the identifier layer of the local end, the first IP address corresponding to the first terminal according to the first identifier, and the first identifier of the first terminal and the first identifier by using the identifier layer of the local end The mapping relationship between the IP addresses is stored in the local mapping table to send data to the first terminal corresponding to the first identifier according to the mapping relationship between the first identifier and the first IP address in the local mapping table.

Further, the processor is further configured to receive, by using an identifier layer interface of the local end, the mapping update interface sent by the first terminal, where the mapping update packet includes the first identifier corresponding to the first terminal, and the new identifier. First IP address;

The receiver is further configured to receive the mapping update packet sent by the first terminal by using the local layer's transport layer interface to restore the data transmission with the first terminal according to the new first IP address.

Further, the processor is further configured to: by using an identifier layer interface of the local end of the local end, check the legality of the mapping relationship between the first identifier and the new first IP address; if the check result is legal, pass the The identifier layer of the local end stores the mapping relationship between the first identifier and the new first IP address in the local mapping table.

Further, the receiver is further configured to directly forward the data sent by the first terminal corresponding to the received first identifier to the third terminal corresponding to the third identifier by using the local layer of the local layer;

The transmitter is configured to directly receive the data sent by the third terminal corresponding to the third identifier by using the local layer of the local layer, and send the third terminal by using the identifier layer of the local end by the application layer of the local end. The data is forwarded to the first terminal corresponding to the first identifier.

The terminal provided by the embodiment of the present invention completes the mapping of the identifier to the IP address by the identifier layer by establishing an identifier layer between the application layer and the transport layer, and calling the identifier layer interface by using the application layer, and calling the transport layer. The interface implements identifier-based data transmission between the two parties, thus eliminating the need for a terminal protocol The original protocol layer in the stack is modified to solve the problem of difficult deployment and backward compatibility. Another embodiment of the present invention provides a system for data transmission, which is used to perform the data transmission method provided by the foregoing embodiments. Referring to Figure 12, the system includes:

The first terminal 1201 and the second terminal 1202;

The first terminal 1201 is the first terminal provided by the foregoing embodiment;

The second terminal 1202 is the second terminal provided by the foregoing embodiment.

The system provided by the embodiment of the present invention completes the mapping of the identifier to the IP address by the identifier layer by establishing an identifier layer between the application layer and the transport layer, and calling the identifier layer interface by using the application layer, and calling the transport layer. The interface implements identifier-based data transmission between the two communicating parties, thereby eliminating the need to modify the original protocol layer in the terminal protocol stack, thereby solving the problem of difficulty in deployment and backward compatibility. It should be noted that, when the terminal provided by the foregoing embodiment sends data and receives data, only the division of each functional module is illustrated. In actual applications, the function distribution may be completed by different functional modules as needed. The internal structure of the terminal is divided into different functional modules to complete all or part of the functions described above. In addition, the terminal, the data transmission system and the data transmission method embodiment provided by the foregoing embodiments are in the same concept, and the specific implementation process is described in the method embodiment, and details are not described herein again.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

claims

1. A method of data transmission, characterized in that the method includes:

The first terminal calls the local identifier layer interface through the local application layer to send data to the second terminal corresponding to the second identifier;

The second identifier is mapped to the second Internet Protocol IP address corresponding to the second terminal through the identifier layer of the local end, and the transport layer interface of the local end is called to send the data to the second IP address. The corresponding second terminal.

2. The method according to claim 1, characterized in that, before calling the local identifier layer interface through the local application layer to send data to the second terminal corresponding to the second identifier, the method further includes: using the local application. The layer calls the identifier layer interface of the local terminal to send a connection request to the second terminal corresponding to the second identifier;

Obtain the second IP address corresponding to the second terminal through the identifier layer of the local terminal according to the second identifier, and call the transport layer interface of the local terminal to send a connection request to the second terminal corresponding to the second IP address, so as to An identifier-based connection is established with the second terminal.

3. The method according to claim 2, characterized in that, after obtaining the second IP address corresponding to the second terminal according to the second identifier through the identifier layer of the local terminal, it further includes:

Store the mapping relationship between the second identifier of the second terminal and the second IP address in the local mapping table through the local identifier layer;

Mapping the second identifier to the second Internet Protocol IP address corresponding to the second terminal through the local identifier layer specifically includes:

The local identifier layer maps the second identifier to the second IP corresponding to the second terminal according to the mapping relationship between the second identifier and the second IP address in the local mapping table. address.

4. The method according to claim 1, characterized in that if the local terminal updates the IP address, the method further includes:

The application layer of the local terminal calls the identifier layer interface of the local terminal to send a mapping update message to the second terminal, where the mapping update message includes the identifier corresponding to the local terminal and the new IP address;

The second identifier is mapped to the second IP corresponding to the second terminal through the local identifier layer. address, and calls the local transport layer interface to send the mapping update message to the second terminal corresponding to the second IP address, so as to resume data transmission with the second terminal based on the new IP address. .

5. A terminal, characterized in that, the terminal includes:

The calling module is used to call the local identifier layer interface through the local application layer to send data to the second terminal corresponding to the second identifier;

A mapping module, configured to map the second identifier to the second Internet Protocol IP address corresponding to the second terminal through the identifier layer of the local terminal called by the calling module;

The sending module is configured to call the local transport layer interface through the local identifier layer to send the data to the second terminal corresponding to the second IP address mapped by the mapping module.

6. The terminal according to claim 5, wherein the calling module is further configured to call the local identifier layer interface through the local application layer to send a connection request to the second terminal corresponding to the second identifier. ;

The mapping module is also configured to obtain the second IP address corresponding to the second terminal according to the second identifier through the identifier layer of the local terminal called by the calling module;

The sending module is also configured to call the local transport layer interface through the local identifier layer to send a connection request to the second terminal corresponding to the second IP address obtained by the mapping module, so as to establish a connection with the second terminal based on Identifier connection.

7. The terminal according to claim 6, characterized in that, the terminal further includes: a storage module, configured to combine the second identifier of the second terminal and the second IP address through the identifier layer of the local terminal. The mapping relationship between them is stored in the local mapping table;

The mapping module is specifically configured to map the second identifier to the second IP address according to the mapping relationship between the second identifier and the second IP address in the local mapping table through the local identifier layer. The second IP address corresponding to the second terminal.

8. The terminal according to claim 5, wherein the calling module is further configured to, if the local terminal updates the first IP address, call the local terminal’s identifier layer interface through the local terminal’s application layer to the first IP address. The second terminal sends a mapping update message, where the mapping update message includes the identifier corresponding to the local terminal and the new IP address; The mapping module is configured to map the second identifier to the second IP address corresponding to the second terminal through the local identifier layer;

The sending module is also configured to call the local transport layer interface through the local identifier layer to send the mapping update message to the second terminal corresponding to the second IP address, so as to recover according to the new IP address. Data transmission with the second terminal.

9. A method of data transmission, characterized in that the method includes:

The second terminal calls the local identifier layer interface through the local application layer to receive the data sent by the first terminal corresponding to the first identifier;

The local end's transport layer interface is called through the local end's identifier layer to receive the data sent by the first terminal corresponding to the first identifier.

10. The method according to claim 9, characterized in that, before calling the local identifier layer interface through the local application layer to receive the data sent by the first terminal corresponding to the first identifier, the method further includes:

Call the local identifier layer interface through the local application layer to receive the connection request sent by the first terminal corresponding to the first identifier;

The local transport layer interface is called through the local identifier layer to receive the connection request sent by the first terminal corresponding to the first identifier, so as to establish an identifier-based connection with the first terminal.

11. The method according to claim 10, characterized in that, before calling the local identifier layer interface through the local application layer to receive the connection request sent by the first terminal corresponding to the first identifier, the method further includes:

Call the local identifier layer interface through the local application layer to monitor the connection request sent by the first terminal corresponding to the first identifier;

The local transport layer interface is called through the local identifier layer to monitor the connection request sent by the first terminal corresponding to the first identifier.

12. The method according to claim 11, characterized in that, after calling the local transport layer interface through the local identifier layer to monitor the connection request sent by the first terminal corresponding to the first identifier, the method further includes: Obtain the first IP address corresponding to the first terminal according to the first identifier through the local identifier layer, and combine the first identifier of the first terminal with the first IP address through the local identifier layer. The mapping relationship between the first identifier and the first IP address is stored in a local mapping table to send data to the first terminal corresponding to the first identifier according to the mapping relationship between the first identifier and the first IP address in the local mapping table. .

13. The method according to claim 12, wherein if the first terminal updates the first IP address, the method further includes:

The local application layer calls the local identifier layer interface to receive the mapping update message sent by the first terminal. The mapping update message includes the first identifier corresponding to the first terminal and the new first IP. address;

The local end's identifier layer calls the local end's transport layer interface to receive the mapping update message sent by the first terminal, so as to resume data transmission with the first terminal based on the new first IP address.

14. The method according to claim 13, characterized in that, after the calling local transport layer interface receives the mapping update message sent by the first terminal corresponding to the first IP address, the method further includes: The application layer of the end calls the identifier layer interface of the end to check the legality of the mapping relationship between the first identifier and the new first IP address;

If the check result is legal, the mapping relationship between the first identifier and the new first IP address is stored in the local mapping table through the local identifier layer.

15. The method according to claim 9, characterized in that, after calling the transport layer interface of the local terminal to receive the data sent by the first terminal corresponding to the first IP address, it further includes:

The local application layer directly calls the local transport layer interface to forward the data sent by the first terminal corresponding to the received first identifier to the third terminal corresponding to the third identifier;

And/or, directly call the local transport layer interface through the local application layer to receive the data sent by the third terminal corresponding to the third identifier, and call the local identifier layer interface through the local application layer to transfer the third identifier. The data sent by the terminal is forwarded to the first terminal corresponding to the first identifier.

16. A terminal, characterized in that, the terminal includes:

The calling module is used to call the local identifier layer interface through the local application layer to receive the first identifier. The data sent by the first terminal corresponding to the symbol;

The receiving module is configured to call the transport layer interface of the local terminal through the identifier layer of the local terminal called by the calling module to receive the data sent by the first terminal corresponding to the first identifier.

17. The terminal according to claim 16, wherein the calling module is further configured to call the local identifier layer interface through the local application layer to receive the connection sent by the first terminal corresponding to the first identifier. ask;

The receiving module is also configured to call the local transport layer interface through the local identifier layer to receive the connection request sent by the first terminal corresponding to the first identifier, so as to establish an identifier-based connection with the first terminal. .

18. The terminal according to claim 17, characterized in that the calling module is further configured to call the local identifier layer interface through the local application layer to monitor all the messages sent by the first terminal corresponding to the first identifier. Described connection request;

The receiving module is also configured to call the local transport layer interface through the local identifier layer to monitor the connection request sent by the first terminal corresponding to the first identifier.

19. The terminal according to claim 18, characterized in that, the terminal further includes: an acquisition module, configured to obtain the first identifier corresponding to the first terminal through the identifier layer of the local terminal according to the first identifier. IP address;

The storage module is configured to store the mapping relationship between the first identifier of the first terminal and the first IP address obtained by the acquisition module into a local mapping table through the identifier layer of the local terminal, so as to store the mapping relationship between the first identifier of the first terminal and the first IP address obtained by the acquisition module. The mapping relationship between the first identifier and the first IP address in the mapping table sends data to the first terminal corresponding to the first identifier.

20. The terminal according to claim 19, wherein the calling module is further configured to, if the first terminal updates the first IP address, call the identifier layer interface of the local terminal to receive the information through the local application layer. The mapping update message sent by the first terminal;

The receiving module is also configured to call the local transport layer interface to receive the mapping update message sent by the first terminal, so as to restore data with the first terminal according to the new first IP address. transmission.

21. The terminal according to claim 20, characterized in that, the terminal further includes: a checking module, configured to call the identifier layer interface of the local terminal through the local application layer to check the first identifier and the new identifier. The legality of the mapping relationship between the first IP addresses;

The storage module is also configured to store the mapping relationship between the first identifier and the new first IP address in the local mapping table through the local identifier layer if the check result is legal.

22. The terminal according to claim 16, characterized in that, the terminal further includes: a forwarding module, configured to directly call the transport layer interface of the local terminal through the local application layer to correspond to the received first identifier. The data sent by the first terminal is forwarded to the third terminal corresponding to the third identifier; and/or, the local application layer directly calls the local transport layer interface to receive the data sent by the third terminal corresponding to the third identifier. , and forwards the data sent by the third terminal to the first terminal corresponding to the first identifier by calling the identifier layer interface of the local terminal through the local application layer.

23. A data transmission system, characterized in that the system includes: a first terminal and a second terminal;

Wherein, the first terminal is as described in any one of claims 5 to 8; and the second terminal is as described in any one of claims 16 to 22. terminal.