CN112153154A

CN112153154A - Data transmission method and related device

Info

Publication number: CN112153154A
Application number: CN202011041004.6A
Authority: CN
Inventors: 张鹏
Original assignee: Tencent Technology Shenzhen Co Ltd
Current assignee: Tencent Technology Shenzhen Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2020-12-29

Abstract

The application discloses a data transmission method and a related device, and belongs to the technical field of cloud. Obtaining a public network address of an opposite terminal network node; then, sending a target data packet to an opposite-end proxy server based on the public network address of the opposite-end network node so that the opposite-end proxy server forwards the target data packet to the opposite-end network node; and then receiving a data response sent by the opposite-end network node based on the target data packet. Therefore, the data transmission process based on the proxy server is realized, each network node corresponds to the respective proxy server, and the public network address indicating the network node exists in the proxy server, so that the data transmission process between the proxy servers cannot interfere with each other, the generation of delay is avoided, and the timeliness of data transmission in the relay transmission process is improved.

Description

Data transmission method and related device

Technical Field

The present application relates to the field of computer technologies, and in particular, to a data transmission method and a related apparatus.

Background

With the rapid development of internet technology, the requirement for communication quality between network devices is higher and higher. For example, in an application scenario of Peer-to-Peer (Peer-to-Peer, P2P) or real-time communication, when two nodes (peers) cannot be directly connected, if both parties are symmetrical, the communication must be forwarded to each other through a forwarding server.

Generally, the forwarding communication process is implemented by a turn (relay Using relay address) standard protocol, that is, a client communicates with a plurality of different peers by Using the same relay address.

However, the service flow based on the TURN standard Protocol is complicated, and the process of communicating with a plurality of different peers is buffered and forwarded by a Transmission Control Protocol (TCP), and when there are many network nodes that need to forward data, delay may occur, which affects timeliness of data Transmission in the relay forwarding communication process.

Disclosure of Invention

In view of this, the present application provides a data transmission method, which can effectively improve timeliness of data transmission in a relay forwarding communication process.

A first aspect of the present application provides a data transmission method, which may be applied to a system or a program including a data transmission function in a terminal device, and specifically includes:

acquiring a public network address of an opposite terminal network node;

sending a target data packet to a peer proxy server based on the public network address of the peer network node, so that the peer proxy server forwards the target data packet to the peer network node, wherein the peer proxy server and the peer network node have a corresponding relationship;

and receiving a data response sent by the opposite-end network node based on the target data packet.

A second aspect of the present application provides a data transmission apparatus, including: an obtaining unit, configured to obtain a public network address of an opposite-end network node;

a sending unit, configured to send a target data packet to an opposite-end proxy server based on a public network address of the opposite-end network node, so that the opposite-end proxy server forwards the target data packet to the opposite-end network node, where the opposite-end proxy server and the opposite-end network node have a corresponding relationship;

and the receiving unit is used for receiving a data response sent by the opposite-end network node based on the target data packet.

Optionally, in some possible implementation manners of the present application, the sending unit is specifically configured to obtain a target protocol corresponding to the peer network node in a data transmission process;

the sending unit is specifically configured to generate data structure information based on the target protocol, the identifier of the local network node, and the public network address of the peer network node;

the sending unit is specifically configured to generate the target data packet according to the data structure information and the data payload information;

the sending unit is specifically configured to send the target data packet to the peer proxy server, so that the peer proxy server forwards the target data packet to the peer network node.

Optionally, in some possible implementation manners of the present application, the sending unit is specifically configured to send the target data packet to the peer proxy server, so that the peer proxy server obtains the data information according to the data structure information through analysis and forwards the data information to the peer network node, and the peer proxy server deletes the public network address of the peer network node when forwarding the data information to the peer network node.

Optionally, in some possible implementation manners of the present application, the receiving unit is specifically configured to receive a first data feedback sent by a home agent server, where the first data feedback is obtained by the home agent server based on the data response sent by the peer network node, and the data response is obtained by the peer network node based on the target data packet.

Optionally, in some possible implementation manners of the present application, the receiving unit is specifically configured to receive a second data feedback sent by the peer proxy server, where the second data feedback is obtained by the peer proxy server based on the data response sent by the peer network node, and the data response is obtained by the peer network node based on the target data packet.

Optionally, in some possible implementation manners of the present application, the obtaining unit is specifically configured to obtain a feedback interval threshold;

the obtaining unit is specifically configured to send the second data feedback based on the feedback interval threshold.

Optionally, in some possible implementation manners of the present application, the obtaining unit is specifically configured to detect connection information between the peer network node and the home network node;

the obtaining unit is specifically configured to obtain a public network address of the peer network node if the connection information indicates that the connection is abnormal.

Optionally, in some possible implementation manners of the present application, the obtaining unit is specifically configured to determine a home agent server in response to a configuration instruction;

the acquiring unit is specifically configured to match the home agent server to generate a public network address of a home network node in the home agent server;

the acquiring unit is specifically configured to record a correspondence between a public network address of the home terminal network node and the home terminal network node.

Optionally, in some possible implementations of the present application, the obtaining unit is specifically configured to respond to the configuration instruction to broadcast a connection request to the proxy server cluster, so as to receive broadcast feedback;

the obtaining unit is specifically configured to determine the home agent server based on the broadcast feedback.

Optionally, in some possible implementation manners of the present application, the obtaining unit is specifically configured to send a heartbeat instruction to the home agent server according to a preset interval to receive heartbeat feedback;

the acquiring unit is specifically configured to update a correspondence between a public network address of the home terminal network node and the home terminal network node based on the heartbeat feedback.

Optionally, in some possible implementation manners of the present application, the obtaining unit is specifically configured to obtain data interaction information based on a local address between the home network node and the opposite network node;

the obtaining unit is specifically configured to send the data interaction information to the home agent server, so as to verify the data interaction information.

A third aspect of the present application provides a computer device comprising: a memory, a processor, and a bus system; the memory is used for storing program codes; the processor is configured to perform the method for data transmission according to any one of the first aspect or the first aspect according to instructions in the program code.

A fourth aspect of the present application provides a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the method of data transmission of any of the first aspect or the first aspect described above.

According to an aspect of the application, a computer program product or computer program is provided, comprising computer instructions, the computer instructions being stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method for data transmission provided in the first aspect or the various alternative implementations of the first aspect.

According to the technical scheme, the embodiment of the application has the following advantages:

obtaining a public network address of an opposite terminal network node; then, sending a target data packet to an opposite-end proxy server based on the public network address of the opposite-end network node so that the opposite-end proxy server forwards the target data packet to the opposite-end network node, wherein the opposite-end proxy server and the opposite-end network node have a corresponding relation; and then receiving a data response sent by the opposite-end network node based on the target data packet. Therefore, the data transmission process based on the proxy server is realized, each network node corresponds to the respective proxy server, and the public network address indicating the network node exists in the proxy server, so that the data transmission process between the proxy servers cannot interfere with each other, the generation of delay is avoided, and the timeliness of data transmission in the relay transmission process is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a diagram of a network architecture for system operation for data transmission;

fig. 2 is a flowchart of a data transmission according to an embodiment of the present application;

fig. 3 is a flowchart of a method for data transmission according to an embodiment of the present application;

fig. 4 is a schematic view of a scenario of a data transmission method according to an embodiment of the present application;

fig. 5 is a timing diagram of a method for data transmission according to an embodiment of the present application;

fig. 6 is a flowchart of another data transmission according to an embodiment of the present application;

fig. 7 is a timing diagram of another data transmission method according to an embodiment of the present application;

fig. 8 is a flowchart of another method for data transmission according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a server according to an embodiment of the present application.

Detailed Description

The embodiment of the application provides a data transmission method and a related device, which can be applied to a system or a program containing a data transmission function in terminal equipment, and can be used for acquiring a public network address of an opposite terminal network node; then, sending a target data packet to an opposite-end proxy server based on the public network address of the opposite-end network node so that the opposite-end proxy server forwards the target data packet to the opposite-end network node, wherein the opposite-end proxy server and the opposite-end network node have a corresponding relation; and then receiving a data response sent by the opposite-end network node based on the target data packet. Therefore, the data transmission process based on the proxy server is realized, each network node corresponds to the respective proxy server, and the public network address indicating the network node exists in the proxy server, so that the data transmission process between the proxy servers cannot interfere with each other, the generation of delay is avoided, and the timeliness of data transmission in the relay transmission process is improved.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "corresponding" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

First, some nouns that may appear in the embodiments of the present application are explained.

User Data Protocol (UDP): a simple datagram-oriented transport layer protocol. Non-connection-oriented, unreliable data streaming is provided. UDP does not provide reliability nor functions such as message arrival confirmation, ordering, and flow control. It simply sends out datagrams that the application passes to the IP layer, but does not guarantee that they will reach the destination. The messages may be lost, duplicated, out of order, etc. However, UDP does not require a connection between the client and the server before transmitting the datagram, and has no mechanism such as timeout retransmission, so that the transmission speed is high.

Proxy server (Agent): and the network node after the network address conversion is communicated with other network nodes. For example, when direct communication between network nodes is not possible, relay communication between the network nodes is realized by forwarding network data through a proxy Server, which is equivalent to a TURN Server (relay service) in a standard protocol.

TURN: when direct connection between nodes fails to punch holes, the adopted relay server forwarding mode is a standard protocol.

Network node (Peer): which refers to a terminal in a local area network under network address translation.

STUN server: so that the client terminals can learn their public address, the type of network address translation that is in front of them, and the network port that is connected to a particular local port by network address translation.

It should be understood that the method for data transmission provided in the present application may be applied to a system or a program including a function of data transmission in a terminal device, and specifically, the method for data transmission provided in the present application is applied to a network architecture shown in fig. 1, where fig. 1 is a network architecture diagram for operating a system for data transmission. The network architecture may include: a sending end network node and a receiving end network node. As an example, the data transmission scheme provided by the embodiment of the present application may be applied in a scenario where data interaction such as video, picture, file, and the like is performed between network nodes.

For example, the method can be applied to a live video P2P transmission scene, and a stable and reliable transmission channel is provided for video data transmission. For such a scenario, the sending-end network node may be a server, and the receiving-end network node may be a terminal.

In a possible implementation manner, the server may be an independent physical server, or a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server that provides basic cloud computing services such as a cloud service, a cloud database, cloud computing, a cloud function, cloud storage, a network service, cloud communication, a middleware service, a domain name service, a security service, a CDN (Content delivery network), and a big data and artificial intelligence platform. The terminal may be, but is not limited to, a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, and the like.

The terminal and the server may be directly or indirectly connected through wired or wireless communication, and the present application is not limited thereto. In addition, data transmission between the sending end network node and the receiving end network node can be bidirectional, that is, the identities of the two can be interchanged.

It is understood that the terminal device may be a computer device, and in an actual scenario, there may be more or fewer types of terminal devices participating in the data transmission process, and the specific number and types depend on the actual scenario, which is not limited herein, and in addition, three network nodes are shown in fig. 1, but in an actual scenario, there may also be participation of multiple servers, and the specific number of network nodes depends on the actual scenario.

With the rapid development of internet technology, the requirement for communication quality between network devices is higher and higher. For example, in the application scenario of the P2P application or the real-time communication, when two nodes cannot be directly connected, if both sides are symmetrical, the communication must be forwarded to each other through the forwarding server.

Generally, the procedure of forwarding communication is implemented by TURN standard protocol, that is, a client communicates with a plurality of different peers by using the same relay address (relay address).

However, the service flow based on the TURN standard protocol is complex, and the process of communicating with a plurality of different nodes is buffered and forwarded by the transmission control protocol, and when there are many network nodes that need to forward data, delay may be generated, which affects timeliness of data transmission in the process of forwarding communication.

In order to solve the above problem, the present application provides a data transmission method, which is applied to the flow framework of data transmission shown in fig. 2, and as shown in fig. 2, the flow framework of data transmission provided in the embodiments of the present application is a flow framework diagram of data transmission, that is, at least one proxy server is set for each network node to ensure that the network node can completely communicate with other network nodes no matter what kind of network is, so called the proxy server is a proxy of the network node. The main function of the proxy server is that if data is sent to the network node in a communication way, the data can be directly sent to the proxy server of the network node and is forwarded to the network node by the proxy server.

It will be appreciated that the proxy server is integral with the STUN server and that the network nodes initially communicate with the proxy server and may communicate with each other by virtue of the fact that the network nodes must communicate with the STUN server in order for them to detect public network addresses.

It can be understood that the method provided by the present application may be a program written as a processing logic in a hardware system, or may be a data transmission device, and the processing logic is implemented in an integrated or external manner. As an implementation manner, the data transmission device obtains a public network address of the opposite-end network node; then, sending a target data packet to an opposite-end proxy server based on the public network address of the opposite-end network node so that the opposite-end proxy server forwards the target data packet to the opposite-end network node, wherein the opposite-end proxy server and the opposite-end network node have a corresponding relation; and then receiving a data response sent by the opposite-end network node based on the target data packet. Therefore, the data transmission process based on the proxy server is realized, each network node corresponds to the respective proxy server, and the public network address indicating the network node exists in the proxy server, so that the data transmission process between the proxy servers cannot interfere with each other, the generation of delay is avoided, and the timeliness of data transmission in the relay transmission process is improved.

With reference to the above flow architecture, the following describes a data transmission method in the present application, please refer to fig. 3, where fig. 3 is a flow chart of a data transmission method provided in an embodiment of the present application, where the management method may be executed by a network node, and the embodiment of the present application at least includes the following steps:

301. and acquiring the public network address of the opposite terminal network node.

In this embodiment, the data transmission method may be initiated by a home network node, where the home network node is a sender of data, and an opposite network node is a receiver of data; therefore, the home network node and the peer network node are relative concepts, and any network node is determined to be the home terminal or the peer terminal based on the data sending or receiving condition.

It is understood that the process of obtaining the public network address of the correspondent network node may be performed when the path between the network nodes is not established or fails in the P2P scenario. For the scene, the connection information between the opposite terminal network node and the local terminal network node can be detected firstly; and if the connection information indicates abnormal connection, acquiring the public network address of the opposite-end network node. Thereby ensuring the continuity of data transmission between the network nodes.

302. And sending the target data packet to the opposite-end proxy server based on the public network address of the opposite-end network node so that the opposite-end proxy server forwards the target data packet to the opposite-end network node.

In this embodiment, the peer proxy server and the peer network node have a corresponding relationship, and no matter the peer network node or the home network node has its associated proxy server, the public network address of the network node is stored in the associated proxy server, and the corresponding network node can be communicated through the public network address. Specifically, each proxy server can serve one network node or a plurality of network nodes, and the judgment of the network nodes can be carried out according to public network addresses when the proxy servers are used; each network node can correspond to one proxy server or serve a plurality of proxy servers, and when the network node is used, the proxy servers of the proxies are judged according to the time delay between the network node and the proxy servers, wherein the specific number is determined according to actual scenes.

Specifically, in the transmission process of the target data packet, a structure construction based on a public network address can be performed on the target data packet, that is, a target protocol, such as a UDP protocol, corresponding to the local network node and the opposite network node in the data transmission process is obtained first; then generating data structure information based on the target protocol, the identifier of the local terminal network node and the public network address of the opposite terminal network node; generating a target data packet according to the data structure information and the data load information; therefore, the target data packet is sent to the opposite-end proxy server, so that the opposite-end proxy server forwards the target data packet to the opposite-end network node, and the accuracy of data transmission is guaranteed.

In a possible scenario, the target data packet may refer to the structural form shown in fig. 4, and fig. 4 is a schematic view of a scenario of a method for data transmission according to an embodiment of the present application; that is, the data structure information part of the target data packet includes a protocol number, a sender identifier (a home network node identifier) and a target public network address (an opposite public network address), and the data load information part is a data load, that is, a specific data form. In the sending process, the data packet structure can be sent only by positioning an additional protocol number and a target public network address; correspondingly, based on the form of the target data packet, the behavior of the proxy server is simple, namely after the data packet is received, the target address (the opposite-end public network address) in the data packet is analyzed, and then the data packet is sent to the target address.

Optionally, in order to simulate a process of direct communication between the peer network node and the home network node, the peer public network address may be deleted after a sending target (the peer public network address) is determined; specifically, when the opposite-end proxy server retransmits the data, in order to achieve information transparency, the opposite-end network node analyzes the data to obtain that the local-end network node directly transmits the data to the opposite-end network node, the opposite-end public network address in the target data packet is removed, and then the data is transmitted to the opposite-end network node, so that the visibility of the source in the information transmission process is ensured.

It can be understood that the above-mentioned target data packet only includes a protocol number (also called a command word), a sender identifier, and a target public network address, and the size occupied by the data structure information is about 17 bytes, which is light, easy to parse and small in space occupation compared to the standard TURN protocol in which the data structure information is 36 bytes.

303. And receiving a data response sent by the opposite-end network node based on the target data packet.

In this embodiment, the data response of the peer network node may be a response generated based on the target data packet, for example, a voice response; the method can also be an identification response, for example, in a child smart watch, a home network node (parent) requests the position information of an opposite network node (child), and the data response is real-time position information; the method can also be simple to receive the reply, for example, in a live broadcast scene, the home terminal network node (anchor) pushes the video stream to the opposite terminal network node (audience), and the opposite terminal network node can feed back the played reply mark in real time, so that the video stream is normally pushed; the method can also be a simple additional path construction, for example, the method is applied to a live XP2P product, and lays a foundation for signaling interaction between P2P before the successful punching is carried out, namely, the received data is responded; the specific response form depends on the actual scene, and the actual scene includes but is not limited to live video, internet of things device interaction, real-time monitoring, real-time conversation and the like.

Specifically, before the opposite-end network node is acquired in this embodiment, there are a process of setting association between the network node and the proxy server, and a process of exchanging public network addresses between the network nodes. Taking the configuration process of the home agent server as an example, the determination of the home agent server may be to determine the home agent server in response to a configuration instruction; then matching with the home terminal proxy server to generate a public network address of the home terminal network node in the home terminal proxy server; and then recording the corresponding relation between the public network address of the local network node and the local network node so as to facilitate the access check. The configuration instruction may be initiated by a user, or may be automatically configured by the network node according to a history, where a specific manner is determined by an actual scene.

Optionally, for the configuration of the proxy server, the configuration may be obtained by screening a plurality of proxy servers, that is, first, a connection request is broadcasted to a proxy server cluster in response to a configuration instruction to receive broadcast feedback, where the proxy server cluster is a preset set of a plurality of proxy servers distributed at the edge of the network; and then, determining the home terminal proxy server based on the broadcast feedback, namely selecting the proxy server with smaller delay for association, thereby ensuring the accuracy of data transmission.

Optionally, after the network node is matched with the proxy server, a heartbeat keep-alive process may be performed, that is, the availability of a network path between the network node and the proxy server is determined. Specifically, a heartbeat instruction can be sent to the home agent server according to a preset interval so as to receive heartbeat feedback; and then updating the corresponding relation between the public network address of the local network node and the local network node based on the heartbeat feedback. In one possible scenario, the network node may implement long connection keep-alive by using application layer heartbeat, and performing reconnection operation through timeout of heartbeat packets and other conditions (network handover). The application layer heartbeat can be that the network node sends a self-defined instruction to the opposite terminal at regular intervals so as to judge whether the two parties are alive or not, and the specific instruction form is determined by an actual scene.

With the above embodiment, it can be known that the public network address of the opposite terminal network node is obtained; then, sending a target data packet to an opposite-end proxy server based on the public network address of the opposite-end network node so that the opposite-end proxy server forwards the target data packet to the opposite-end network node, wherein the opposite-end proxy server and the opposite-end network node have a corresponding relation; and then receiving a data response sent by the opposite-end network node based on the target data packet. Therefore, the data transmission process based on the proxy server is realized, each network node corresponds to the respective proxy server, and the public network address indicating the network node exists in the proxy server, so that the data transmission process between the proxy servers cannot interfere with each other, the generation of delay is avoided, and the timeliness of data transmission in the relay transmission process is improved.

The foregoing embodiment describes a process of data transmission in a relay service process by a home network node, and next, with reference to an architecture shown in fig. 2, an execution operation of each part in the architecture is described, as shown in fig. 5, fig. 5 is a timing diagram of a method for data transmission provided in an embodiment of the present application, where the embodiment at least includes the following steps:

501. and the home terminal network node maps the public network address to the home terminal proxy server.

In this embodiment, corresponding to the architecture shown in fig. 2, the home network node is the network node 1, the home agent server is the agent server 1, the peer network node is the network node 2, and the peer agent server is the agent server 2.

502. The correspondent network node maps the public network address to the correspondent proxy server.

In this embodiment, the processes in step 501 and step 502 are processes of determining an association relationship between a network node and each proxy server, and reflecting the association relationship through mapping of public network addresses.

503. And the local terminal network node sends the target data packet to the opposite terminal proxy server.

In this embodiment, the home node determines a destination by analyzing a destination address (an opposite-end public network address) indicated in a header of the destination packet, so as to send the destination packet to the corresponding opposite-end proxy server.

504. And the opposite terminal proxy server analyzes the target data packet to obtain the public network address of the opposite terminal network node.

In this embodiment, the peer proxy server obtains the public network address of the peer network node by analyzing the target packet, so that the target packet can be immediately sent to the network node corresponding to the public network address.

505. And the opposite-end proxy server sends the target data packet to the opposite-end network node.

In this embodiment, before sending the target data packet to the peer network node, the peer proxy server may delete the part indicating the public network address of the peer network node in the data structure information of the target data packet, so as to simulate a scenario in which the home network node directly communicates with the peer network node.

506. The opposite end network node responds to the target data packet.

In this embodiment, the response mode of the peer network node is determined by an actual scene, and the specific scene includes, but is not limited to, live broadcast software, real-time monitoring of a consumer-level camera, real-time call assistance of a child smart watch, and the like.

507. And the opposite terminal network node sends a data response to the home terminal proxy server.

In this embodiment, since the home agent server records the public network address of the home network node, data response can be performed by the home agent server.

508. And the home terminal proxy server forwards the data response.

In this embodiment, the sending of the data response by the peer network node to the home agent server may be a first data feedback, where the first data feedback is obtained by the home agent server based on the data response sent by the peer network node, that is, the first data feedback is a path identifier added with a response on the basis of the data response, so that visibility of a communication process is improved.

509. And the home terminal proxy server sends a data response to the home terminal network node.

It can be seen from the above embodiments that the above process is implemented for the standard TURN standard, which greatly simplifies the relay forwarding process and effectively solves the communication mode when no hole is successfully drilled between P2P. And the proxy servers can be easily deployed, and because each proxy server has no relevance, horizontal capacity expansion can be realized by random deployment. In addition, the performance is high due to the small behavior of the proxy server, i.e. the performance is better than the TURN server implemented by the standard protocol.

In a possible scenario, since the home network node is already actively connected to the peer proxy server, it is also feasible to forward the data to the home network node through the peer proxy service, which is described below, as shown in fig. 6, fig. 6 is another flow architecture diagram of data transmission provided in this embodiment of the present application, that is, a network node 2 (peer network node) sends data feedback to a proxy server 2 (peer proxy server) to forward the data to a network node 1 (home network node).

Fig. 7 shows a specific step, and fig. 7 is a timing diagram of another data transmission method according to the embodiment of the present application; the embodiment at least comprises the following steps:

701. and the home terminal network node maps the public network address to the home terminal proxy server.

702. The correspondent network node maps the public network address to the correspondent proxy server.

703. And the local terminal network node sends the target data packet to the opposite terminal proxy server.

704. And the opposite terminal proxy server analyzes the target data packet to obtain the public network address of the opposite terminal network node.

705. And the opposite-end proxy server sends the target data packet to the opposite-end network node.

706. The opposite end network node responds to the target data packet.

In this embodiment, steps 701-706 are similar to steps 501-506 of the embodiment shown in fig. 5, and the description of the relevant features may be referred to, which is not repeated herein.

707. And the opposite-end network node sends a data response to the opposite-end proxy server.

In this embodiment, since the home network node has been actively connected to the peer proxy server, the home network node can be forwarded to the home network node through the peer proxy server.

708. And the opposite-end proxy server forwards the data response.

Optionally, the forwarding of the data response by the peer proxy server needs to be performed as soon as possible, so as to avoid packet loss due to no keep-alive mechanism between the local network node and the peer proxy server. So the feedback interval threshold can be obtained first; the second data feedback is then sent based on the feedback interval threshold. In one possible scenario, forwarding the data response may be performed immediately, thereby avoiding the occurrence of a packet loss situation.

709. And the opposite-end proxy server sends a data response to the local-end network node.

In this scenario, the home network node receives a second data feedback sent by the peer proxy server, where the second data feedback is obtained by the peer proxy server based on a data response sent by the peer network node, and the data response is obtained by the peer network node based on the target data packet. The second data feedback can be the same as the data response, or a path identifier is added on the basis of the data response, so that the visibility of the data transmission process is improved.

By combining the above embodiments, based on the UDP protocol between network nodes, the proxy server does not need to maintain any data structure under the condition that redundant relay addresses are not involved, and only needs to use the public network address of each node as the proxy address of the node, and then only needs to carry the public network address of the other node in the data packet, so that the head load of the data packet is low. And no queuing buffer is involved in forwarding, so delay is hardly increased. Compared with the TURN standard protocol, the execution flow of the TURN standard protocol is greatly simplified, and meanwhile, the information transmission process can be executed efficiently.

In a possible scenario, the data transmission method of the present application can also be used as an auxiliary communication in the normal communication process of P2P, which is described below. Referring to fig. 8, fig. 8 is a flowchart of another data transmission method according to an embodiment of the present disclosure, where the embodiment of the present disclosure at least includes the following steps:

801. and interacting with the opposite terminal equipment based on the local address to obtain local interaction information.

In this embodiment, the local interaction information is interaction information directly connected between network nodes, so that data interaction information based on a local address between the local network node and the opposite network node can be obtained first; and then sending the data interaction information to the home agent server to verify the data interaction information.

In one possible scenario, where reliable transport protocol support is already available between network nodes, reliable transport between network nodes is not affected by relay forwarding through the respective proxy server. Because the proxy server is transparent, the data transmission mode of the application can be adopted even if the network node is supported by a reliable transmission protocol. For example, in the live video broadcasting process, a reliable transmission algorithm is already provided between the instant network nodes, and a proxy server can also be set.

802. And interacting with the opposite terminal equipment based on the public network address to obtain public network interaction information.

In this embodiment, the process of determining the public network interaction information refers to the embodiment shown in fig. 3, which is not described herein again.

803. And comparing the local interactive information with the public network interactive information to obtain a comparison result.

In this embodiment, the comparison process is to compare the difference of the transmission data, for example: data integrity, target address accuracy and the like, so as to judge whether a network exception occurs in the local interaction process, thereby ensuring high-speed and high-efficiency operation of the P2P communication process.

In order to better implement the above-mentioned aspects of the embodiments of the present application, the following also provides related apparatuses for implementing the above-mentioned aspects. Referring to fig. 9, fig. 9 is a schematic structural diagram of a data transmission device according to an embodiment of the present application, where the data transmission device 900 includes:

an obtaining unit 901, configured to obtain a public network address of an opposite-end network node;

a sending unit 902, configured to send a target data packet to a peer proxy server based on a public network address of the peer network node, so that the peer proxy server forwards the target data packet to the peer network node, where the peer proxy server and the peer network node have a corresponding relationship;

a receiving unit 903, configured to receive a data response sent by the peer network node based on the target data packet.

Optionally, in some possible implementation manners of the present application, the sending unit 902 is specifically configured to obtain a target protocol corresponding to the peer network node in a data transmission process;

the sending unit 902 is specifically configured to generate data structure information based on the target protocol, the identifier of the local network node, and the public network address of the peer network node;

the sending unit 902 is specifically configured to generate the target data packet according to the data structure information and the data payload information;

the sending unit 902 is specifically configured to send the target data packet to the peer proxy server, so that the peer proxy server forwards the target data packet to the peer network node.

Optionally, in some possible implementation manners of the present application, the sending unit 902 is specifically configured to send the target data packet to the peer proxy server, so that the peer proxy server obtains the data information according to the data structure information through analysis and forwards the data information to the peer network node, and the peer proxy server deletes the public network address of the peer network node when forwarding the data information to the peer network node.

Optionally, in some possible implementation manners of the present application, the receiving unit 903 is specifically configured to receive a first data feedback sent by a home agent server, where the first data feedback is obtained by the home agent server based on a data response sent by the peer network node, and the data response is obtained by the peer network node based on the target data packet.

Optionally, in some possible implementation manners of the present application, the receiving unit 903 is specifically configured to receive a second data feedback sent by the peer proxy server, where the second data feedback is obtained by the peer proxy server based on the data response sent by the peer network node, and the data response is obtained by the peer network node based on the target data packet.

Optionally, in some possible implementation manners of the present application, the obtaining unit 901 is specifically configured to obtain a feedback interval threshold;

the obtaining unit 901 is specifically configured to send the second data feedback based on the feedback interval threshold.

Optionally, in some possible implementation manners of the present application, the obtaining unit 901 is specifically configured to detect connection information between the peer network node and the home network node;

the obtaining unit 901 is specifically configured to obtain a public network address of an opposite-end network node if the connection information indicates that the connection is abnormal.

Optionally, in some possible implementation manners of the present application, the obtaining unit 901 is specifically configured to determine a home agent server in response to a configuration instruction;

the acquiring unit 901 is specifically configured to match the home agent server to generate a public network address of a home network node in the home agent server;

the obtaining unit 901 is specifically configured to record a corresponding relationship between a public network address of the home network node and the home network node.

Optionally, in some possible implementation manners of the present application, the obtaining unit 901 is specifically configured to respond to the configuration instruction to broadcast a connection request to the proxy server cluster, so as to receive broadcast feedback;

the obtaining unit 901 is specifically configured to determine the home agent server based on the broadcast feedback.

Optionally, in some possible implementation manners of the present application, the obtaining unit 901 is specifically configured to send a heartbeat instruction to the home agent server according to a preset interval to receive heartbeat feedback;

the obtaining unit 901 is specifically configured to update the corresponding relationship between the public network address of the home network node and the home network node based on the heartbeat feedback.

Optionally, in some possible implementation manners of the present application, the obtaining unit 901 is specifically configured to obtain data interaction information based on a local address between the local network node and the opposite network node;

the obtaining unit 901 is specifically configured to send the data interaction information to the home agent server, so as to verify the data interaction information.

An embodiment of the present application further provides a terminal device, as shown in fig. 10, which is a schematic structural diagram of another terminal device provided in the embodiment of the present application, and for convenience of description, only a portion related to the embodiment of the present application is shown, and details of the specific technology are not disclosed, please refer to a method portion in the embodiment of the present application. The terminal may be any terminal device including a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), a point of sale (POS), a vehicle-mounted computer, and the like, taking the terminal as the mobile phone as an example:

fig. 10 is a block diagram illustrating a partial structure of a mobile phone related to a terminal provided in an embodiment of the present application. Referring to fig. 10, the cellular phone includes: radio Frequency (RF) circuitry 1010, memory 1020, input unit 1030, display unit 1040, sensor 1050, audio circuitry 1060, wireless fidelity (WiFi) module 1070, processor 1080, and power source 1090. Those skilled in the art will appreciate that the handset configuration shown in fig. 10 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile phone in detail with reference to fig. 10:

RF circuit 1010 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, for processing downlink information of a base station after receiving the downlink information to processor 1080; in addition, the data for designing uplink is transmitted to the base station. In general, RF circuit 1010 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuitry 1010 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to global system for mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Message Service (SMS), etc.

The memory 1020 can be used for storing software programs and modules, and the processor 1080 executes various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 1020. The memory 1020 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 1020 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 1030 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 1030 may include a touch panel 1031 and other input devices 1032. The touch panel 1031, also referred to as a touch screen, may collect touch operations by a user (e.g., operations by a user on or near the touch panel 1031 using any suitable object or accessory such as a finger, a stylus, etc., and spaced touch operations within a certain range on the touch panel 1031) and drive corresponding connection devices according to a preset program. Alternatively, the touch panel 1031 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1080, and can receive and execute commands sent by the processor 1080. In addition, the touch panel 1031 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 1030 may include other input devices 1032 in addition to the touch panel 1031. In particular, other input devices 1032 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, a joystick, or the like.

The display unit 1040 may be used to display information input by a user or information provided to the user and various menus of the cellular phone. The display unit 1040 may include a display panel 1041, and optionally, the display panel 1041 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), or the like. Further, the touch panel 1031 can cover the display panel 1041, and when the touch panel 1031 detects a touch operation on or near the touch panel 1031, the touch operation is transmitted to the processor 1080 to determine the type of the touch event, and then the processor 1080 provides a corresponding visual output on the display panel 1041 according to the type of the touch event. Although in fig. 10, the touch panel 1031 and the display panel 1041 are two separate components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 1031 and the display panel 1041 may be integrated to implement the input and output functions of the mobile phone.

The handset may also include at least one sensor 1050, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 1041 according to the brightness of ambient light, and the proximity sensor may turn off the display panel 1041 and/or the backlight when the mobile phone moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

Audio circuitry 1060, speaker 1061, microphone 1062 may provide an audio interface between the user and the handset. The audio circuit 1060 can transmit the electrical signal converted from the received audio data to the speaker 1061, and the electrical signal is converted into a sound signal by the speaker 1061 and output; on the other hand, the microphone 1062 converts the collected sound signal into an electrical signal, which is received by the audio circuit 1060 and converted into audio data, which is then processed by the audio data output processor 1080 and then sent to, for example, another cellular phone via the RF circuit 1010, or output to the memory 1020 for further processing.

WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help the user to send and receive e-mail, browse web pages, access streaming media, etc. through the WiFi module 1070, which provides wireless broadband internet access for the user. Although fig. 10 shows the WiFi module 1070, it is understood that it does not belong to the essential constitution of the handset, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 1080 is a control center of the mobile phone, connects various parts of the whole mobile phone by using various interfaces and lines, and executes various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 1020 and calling data stored in the memory 1020, thereby integrally monitoring the mobile phone. Optionally, processor 1080 may include one or more processing units; optionally, processor 1080 may integrate an application processor, which primarily handles operating systems, user interfaces, application programs, etc., and a modem processor, which primarily handles wireless communications. It is to be appreciated that the modem processor described above may not be integrated into processor 1080.

The handset also includes a power source 1090 (e.g., a battery) for powering the various components, which may optionally be logically coupled to the processor 1080 via a power management system to manage charging, discharging, and power consumption via the power management system.

Although not shown, the mobile phone may further include a camera, a bluetooth module, etc., which are not described herein.

In the embodiment of the present application, the processor 1080 included in the terminal further has a function of executing the steps of the page processing method.

Referring to fig. 11, fig. 11 is a schematic structural diagram of a server provided in the embodiment of the present application, where the server 1100 may generate large differences due to different configurations or performances, and may include one or more Central Processing Units (CPUs) 1122 (e.g., one or more processors) and a memory 1132, and one or more storage media 1130 (e.g., one or more mass storage devices) storing an application program 1142 or data 1144. Memory 1132 and storage media 1130 may be, among other things, transient storage or persistent storage. The program stored on the storage medium 1130 may include one or more modules (not shown), each of which may include a series of instruction operations for the server. Still further, the central processor 1122 may be provided in communication with the storage medium 1130 to execute a series of instruction operations in the storage medium 1130 on the server 1100.

The server 1100 may also include one or more power supplies 1126, one or more wired or wireless network interfaces 1150, one or more input-output interfaces 1158, and/or one or more operating systems 1141, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and so forth.

The steps performed by the management apparatus in the above-described embodiment may be based on the server configuration shown in fig. 11.

Also provided in the embodiments of the present application is a computer-readable storage medium, which stores instructions for data transmission, and when the instructions are executed on a computer, the instructions cause the computer to perform the steps performed by the data transmission apparatus in the methods described in the foregoing embodiments shown in fig. 2 to 8.

Also provided in the embodiments of the present application is a computer program product including instructions for data transmission, which when run on a computer, cause the computer to perform the steps performed by the data transmission apparatus in the method described in the embodiments of fig. 2 to 8.

The embodiment of the present application further provides a data transmission system, where the data transmission system may include the data transmission apparatus in the embodiment described in fig. 9, or the terminal device in the embodiment described in fig. 10, or the server described in fig. 11.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a data transmission device, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A method of data transmission, comprising:

acquiring a public network address of an opposite terminal network node;

2. The method of claim 1, wherein sending the destination packet to a correspondent proxy server based on a public network address of the correspondent network node, so that the correspondent proxy server forwards the destination packet to the correspondent network node, comprises:

acquiring a target protocol corresponding to the opposite terminal network node in the data transmission process;

generating data structure information based on the target protocol, the identifier of the local network node and the public network address of the opposite network node;

generating the target data packet according to the data structure information and the data load information;

sending the target data packet to the peer proxy server, so that the peer proxy server forwards the target data packet to the peer network node.

3. The method of claim 2, wherein sending the target packet to the peer proxy server to cause the peer proxy server to forward the target packet to the peer network node comprises:

and sending the target data packet to the opposite-end proxy server so that the opposite-end proxy server obtains the data information according to the data structure information analysis and forwards the data information to the opposite-end network node, and deleting the public network address of the opposite-end network node when the opposite-end proxy server forwards the data information to the opposite-end network node.

4. The method of claim 1, wherein the receiving of the data response sent by the peer network node based on the destination data packet comprises:

and receiving a first data feedback sent by a home agent server, wherein the first data feedback is obtained by the home agent server based on the data response sent by the opposite-end network node, and the data response is obtained by the opposite-end network node based on the target data packet.

5. The method of claim 1, wherein the receiving of the data response sent by the peer network node based on the destination data packet comprises:

and receiving second data feedback sent by the opposite-end proxy server, wherein the second data feedback is obtained by the opposite-end proxy server based on the data response sent by the opposite-end network node, and the data response is obtained by the opposite-end network node based on the target data packet.

6. The method of claim 5, further comprising:

acquiring a feedback interval threshold;

sending the second data feedback based on the feedback interval threshold.

7. The method of claim 1, wherein the obtaining the public network address of the correspondent network node comprises:

detecting the connection information of the opposite terminal network node and the local terminal network node;

and if the connection information indicates abnormal connection, acquiring the public network address of the opposite-end network node.

8. The method according to any one of claims 1-7, further comprising:

determining a home agent server in response to the configuration instruction;

matching with the home agent server to generate a public network address of a home network node in the home agent server;

and recording the corresponding relation between the public network address of the local network node and the local network node.

9. The method of claim 8, wherein determining the home agent server in response to the configuration instruction comprises:

broadcasting a connection request to a proxy server cluster in response to the configuration instruction to receive broadcast feedback;

determining the home agent server based on the broadcast feedback.

10. The method of claim 8, further comprising:

sending a heartbeat instruction to the home agent server according to a preset interval so as to receive heartbeat feedback;

and updating the corresponding relation between the public network address of the local network node and the local network node based on the heartbeat feedback.

11. The method of claim 8, further comprising:

acquiring local address-based data interaction information between the local terminal network node and the opposite terminal network node;

and sending the data interaction information to the home agent server to verify the data interaction information.

12. The method of claim 1, wherein the method of data transmission is applied to peer-to-peer transmission, and wherein the peer network node interacts with the home network node based on a user datagram protocol.

13. A data transmission apparatus, comprising:

an obtaining unit, configured to obtain a public network address of an opposite-end network node;

a sending unit, configured to send a target data packet to a peer proxy server based on a public network address of the peer network node, so that the peer proxy server forwards the target data packet to the peer network node, where the peer proxy server and the peer network node have a corresponding relationship;

14. A computer device, the computer device comprising a processor and a memory:

the memory is used for storing program codes; the processor is configured to perform the method of data transmission of any one of claims 1 to 12 according to instructions in the program code.

15. A computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the method of data transmission of any of the preceding claims 1 to 12.