WO2019184262A1 - Procédé de traversée de traduction d'adresse de réseau de données multimédias de multiples types, terminal et système - Google Patents

Procédé de traversée de traduction d'adresse de réseau de données multimédias de multiples types, terminal et système Download PDF

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Publication number
WO2019184262A1
WO2019184262A1 PCT/CN2018/105450 CN2018105450W WO2019184262A1 WO 2019184262 A1 WO2019184262 A1 WO 2019184262A1 CN 2018105450 W CN2018105450 W CN 2018105450W WO 2019184262 A1 WO2019184262 A1 WO 2019184262A1
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Prior art keywords
terminal
network address
data transmission
transmission channel
party
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PCT/CN2018/105450
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English (en)
Chinese (zh)
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陈劲松
吴新宇
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北京大米科技有限公司
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Publication of WO2019184262A1 publication Critical patent/WO2019184262A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H04L61/256—NAT traversal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/141—Setup of application sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H04L61/2514—Translation of Internet protocol [IP] addresses between local and global IP addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H04L61/256—NAT traversal
    • H04L61/2564—NAT traversal for a higher-layer protocol, e.g. for session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H04L61/256—NAT traversal
    • H04L61/2575—NAT traversal using address mapping retrieval, e.g. simple traversal of user datagram protocol through session traversal utilities for NAT [STUN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H04L61/256—NAT traversal
    • H04L61/2589—NAT traversal over a relay server, e.g. traversal using relay for network address translation [TURN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H04L65/403—Arrangements for multi-party communication, e.g. for conferences

Definitions

  • the present invention relates to the field of network technology. More specifically, it relates to a multi-type media data network address translation traversal method, terminal and system.
  • NAT Network Address Translation
  • NAT traversal is a communication method widely used in the field of P2P (Point to Point). During the video conference, NAT traversal also plays a vital role in the communication between internal and external networks. NAT traversal of signaling, multimedia data, etc. may exist between platform servers, between participating terminals, and between platform servers and participating terminals. In the process of P2P audio and video calls, since both terminals of the call are located behind the NAT for the public network, it is also necessary to implement audio and video calls through NAT traversal.
  • Cone NAT There are 4 different types of NAT: Full Cone, Address Restricted Cone, Port Restricted Cone, and Symmetric, where Full Cone, Address Restricted
  • Cone NAT The three types of Cone and Port Restricted Cone are collectively referred to as Cone NAT.
  • Cone NAT Usually, for Symmetric NAT, it is considered that it is impossible to achieve traversal, and conical NAT can achieve traversal.
  • NAT traversal is the ICE (Interactive Connectivity Establishment) framework (rfc5245).
  • the ICE framework implements NAT traversal based on two protocols: STUN (Simple Traversal of UDP over NATs, NAT UDP Simple Traversal) (rtc5389) and TURN (Traversal Using Relay NAT), by relay (relay mode, relay mode, relay) Forwarding is relay forwarding, relay server is Relay server) traversing NAT) (rtc5766).
  • STUN Simple Traversal of UDP over NATs
  • NAT UDP Simple Traversal rtc5389
  • TURN Traversal Using Relay NAT
  • Terminal A collects all IP addresses and finds an address in which traffic can be received from the STUN server and the TURN server;
  • Terminal A sends an address list to the STUN server, and then sends startup information to the terminal B according to the sorted address list, in order to implement communication between the nodes;
  • Terminal B sends a STUN request to each address in the startup information
  • Terminal A sends the reply message of the first received STUN request to the terminal B;
  • the terminal B After receiving the STUN reply, the terminal B finds out the addresses that can be communicated between the terminal A and the terminal B;
  • an object of the present invention is to provide a process optimized multi-type media data network address translation traversal method, terminal and system.
  • a first aspect of the present invention provides a multi-type media data network address translation traversal method, including:
  • the two terminals in the private network using the network address translation device establish a two-way data transmission channel, where the two-way data transmission channel includes two unidirectional data transmission channels, and each unidirectional data transmission channel is a point-to-point unidirectional data transmission channel or Relay forwarding one-way data transmission channel;
  • the two terminals add data type identification information in the packet header, and use the bidirectional data transmission channel to transmit various types of media data.
  • the establishing the bidirectional data transmission channel between the terminals further comprises:
  • the two terminals respectively obtain the private network address and the public network address of the other party;
  • the two terminals respectively send a binding message to the other party and the relay server, and establish a point-to-point one-way data transmission channel or a relay forwarding one-way data transmission channel of the party to the other party according to the timing of receiving the binding response message.
  • the obtaining, by the two terminals respectively, the private network address and the public network address of the other party further includes:
  • the first terminal of the two terminals obtains the public network address of the first terminal from the relay server, and sends the request information of the private network address and the public network address of the first terminal to the second terminal by using the signaling server;
  • the second terminal obtains the public network address of the second terminal from the relay server, and sends a request response message carrying the second terminal private network address and the public network address to the first terminal by using the signaling server.
  • the method further includes: when the terminal detects that the public network address of the other party changes, the terminal checks the legality of the user ID of the other party, and if the validity check passes, updates the public network address of the other party.
  • a second aspect of the present invention provides a multi-type media data network address translation traversing terminal, comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor implementing the program
  • the multi-type media data network address translation traversal method provided by the first aspect of the present invention.
  • a third aspect of the present invention provides a multi-type media data network address translation traversal system, including two terminals in a private network using a network address translation device, and the two-way data transmission channel established by the two terminals includes two singles.
  • each unidirectional data transmission channel is a point-to-point unidirectional data transmission channel or a relay-forward unidirectional data transmission channel; the two terminals add data type identification information in the data packet header, and use the two-way data
  • the transmission channel transmits various types of media data.
  • the system further includes a relay server; the two terminals respectively acquire a private network address and a public network address of the other party; the two terminals respectively send binding messages to the other party and the relay server, and are tied according to the received The timing of the response message establishes a point-to-point one-way data transmission channel or a relay-forward one-way data transmission channel of the party to the other party.
  • a relay server the two terminals respectively acquire a private network address and a public network address of the other party
  • the two terminals respectively send binding messages to the other party and the relay server, and are tied according to the received
  • the timing of the response message establishes a point-to-point one-way data transmission channel or a relay-forward one-way data transmission channel of the party to the other party.
  • the system further includes a signaling server; the first terminal of the two terminals acquires a public network address of the first terminal from the relay server, and sends a private network address of the first terminal to the second terminal by using the signaling server
  • the request information of the public network address is obtained by the second terminal, and the second terminal obtains the public network address of the second terminal from the relay server, and sends the request response information that carries the private network address and the public network address of the second terminal to the first terminal by using the signaling server.
  • the two terminals check the validity of the user ID of the other party when the public network address of the other party changes, and update the public network address of the other party if the validity check is passed.
  • the technical solution of the invention optimizes the flow of NAT traversal, greatly reduces the interaction of signaling negotiation in NAT traversal, improves the efficiency and success rate of NAT traversal, and speeds up the display of the first frame of the video call. Further, in the case that the terminal changes the public network address, the present invention can realize seamless seamless connection of the media efficiently and quickly.
  • FIG. 1 shows a schematic diagram of network address translation traversal in the ICE mode.
  • FIG. 2 is a flowchart of a multi-type media data network address translation traversal method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a multi-type media data network address translation traversing terminal according to an embodiment of the present invention.
  • FIG. 4 is a signaling flowchart of a multi-type media data network address translation traversal system according to an embodiment of the present invention.
  • an embodiment of the present invention provides a multi-type media data NAT traversal method, including:
  • Two terminals in the private network using the NAT device establish a two-way data transmission channel, and the two-way data transmission channel includes two one-way data transmission channels, and each one-way data transmission channel is a point-to-point one-way data transmission channel or a relay forwarding one-way.
  • the data transmission channel that is, the two unidirectional data transmission channels are point-to-point unidirectional data transmission channels, or the two unidirectional data transmission channels are Relay forwarding unidirectional data transmission channels, or one is a point-to-point unidirectional data transmission channel. The other is Relay forwarding a one-way data transmission channel;
  • the two terminals add data type identification information in the data packet header, and use the two-way data transmission channel to transmit various types of media data, that is, each one-way data transmission channel in the two-way data transmission channel serves as a composite channel for transmission. Different types of multiple media data.
  • the multi-type media data NAT traversal method provided in this embodiment optimizes the flow of NAT traversal. Due to the adoption of the composite channel, the interaction of signaling negotiation in NAT traversal is greatly reduced, and the efficiency and success rate of NAT traversal are improved. Since the two unidirectional data transmission channels in the two-way data transmission channel between the two terminals can be different, the two terminals respectively select a unidirectional data transmission channel in a high-efficiency manner, thereby speeding up the display of the first frame of the video call. .
  • the method for establishing a bidirectional data transmission channel between the terminals in this embodiment is specifically: the two terminals respectively obtain the private network address and the public network address of the other party; the two terminals respectively send bindings to the other party and the Relay server.
  • the message is established according to the timing of receiving the binding response message, and the peer-to-peer one-way data transmission channel or the relay forwarding one-way data transmission channel is established.
  • the two terminals can respectively select a one-way data transmission channel with a high time efficiency, which speeds up the display of the first frame of the video call.
  • the method for the two terminals to obtain the private network address and the public network address of the other party in this embodiment is specifically as follows:
  • the first terminal of the two terminals obtains the public network address of the first terminal from the relay server, and sends the request information carrying the private network address and the public network address of the first terminal to the second terminal by using the signaling server;
  • the second terminal obtains the public network address of the second terminal from the Relay server, and sends a request response message carrying the second terminal private network address and the public network address to the first terminal by using the signaling server.
  • the Relay server in this embodiment integrates the functions of the STUN server and the TURN server in the ICE mode.
  • each terminal has been registered in the signaling server in advance, and the signaling server can be connected to each terminal.
  • Both the signaling server and the relay server are located on the public network.
  • the multi-type media data NAT traversal method provided in this embodiment further includes: when the terminal detects that the public network address of the other party changes, the terminal checks the legality of the user ID of the other party, and if the legality verification passes, updates the other party. Public network address. In this way, in the case that the terminal changes the public network address, the seamless connection of the media can be realized efficiently and quickly.
  • Another embodiment of the present invention provides a multi-type media data network address translation traversing terminal, including a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor implementing the program Multi-type media data network address translation traversal method.
  • the multi-type media data network address translation traversal terminal is a computer system, which includes a central processing unit (CPU), which can be based on a program stored in a read only memory (ROM). Either a program loaded into a random access memory (RAM) from a storage portion performs various appropriate actions and processes. In the RAM, various programs and data required for the operation of the computer system are also stored.
  • the CPU, ROM, and RAM are connected by this bus.
  • An input/input (I/O) interface is also connected to the bus.
  • the following components are connected to the I/O interface: an input portion including a keyboard, a mouse, and the like; an output portion including a liquid crystal display (LCD) or the like, a speaker, etc.; a storage portion including a hard disk or the like; and a network including a LAN card, a modem, and the like
  • the communication part of the interface card performs communication processing via a network such as the Internet.
  • the drive is also connected to the I/O interface as needed.
  • a removable medium such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory or the like is mounted on the drive as needed so that a computer program read therefrom is installed into the storage portion as needed.
  • the process described above in the flowcharts can be implemented as a computer software program.
  • the present embodiment includes a computer program product comprising a computer program tangibly embodied on a computer readable medium, the computer program comprising program code for executing the method illustrated in the flowchart.
  • the computer program can be downloaded and installed from the network via a communication portion, and/or installed from a removable medium.
  • each block in the flowchart or diagram may represent a module, a program segment, or a portion of code that includes one or more of the Execute the instruction.
  • the functions noted in the blocks may also occur in a different order than that illustrated in the drawings. For example, two successively represented blocks may in fact be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending upon the functionality involved.
  • each block of the schematic and/or flow diagrams, as well as combinations of blocks in the schematic and/or flowcharts, can be implemented in a dedicated hardware-based system that performs the specified functions or operations. Or it can be implemented by a combination of dedicated hardware and computer instructions.
  • the units described in this embodiment may be implemented by software or by hardware.
  • the described unit may also be provided in the processor, for example, as a processor packet data transmission channel establishing unit and a data packet encapsulating unit.
  • the names of these units do not in any way constitute a limitation on the unit itself.
  • the packet encapsulation unit may also be described as a "data type identification information adding unit".
  • the embodiment further provides a non-volatile computer storage medium, which may be a non-volatile computer storage medium included in the foregoing terminal in the foregoing embodiment, It may be a non-volatile computer storage medium that exists alone and is not assembled into the terminal.
  • the above non-volatile computer storage medium stores one or more programs, when the one or more programs are executed by one terminal, causing the terminal to establish a two-way with another terminal in the private network using the network address translation device a data transmission channel, the two-way data transmission channel includes two unidirectional data transmission channels, and each unidirectional data transmission channel is a point-to-point unidirectional data transmission channel or a relay-forward unidirectional data transmission channel;
  • Data type identification information is added to the packet header, and various types of media data are transmitted using a bidirectional data transmission channel.
  • Another embodiment of the present invention provides a multi-type media data NAT traversal system.
  • the signaling flow of the multi-type media data NAT traversal system provided in this embodiment is as follows:
  • the Relay server in this embodiment integrates the functions of the STUN server and the TURN server in the ICE mode.
  • each terminal has been registered in the signaling server in advance, and the signaling server can be connected to each terminal.
  • Both the signaling server and the relay server are located in the public network, and the terminal A and the terminal B are respectively connected to the public network through NAT devices (such as a NAT router or a NAT firewall, not shown in FIG. 4) used by the private network.
  • the terminal A sends a request for obtaining a public network address to the relay server of the public network, and the relay server returns the public network address of the terminal A (the terminal A can also obtain its own public network port), and the terminal A obtains its own private network address (the terminal A also Get your own private network port);
  • the terminal A sends the request information of the private network address and the public network address of the terminal A to the terminal B through the signaling server.
  • the terminal A sends the private network address and the public network address of the terminal A and the terminal B to the signaling server.
  • the request information of the user ID the signaling server forwards the request information to the terminal B according to the user ID of the terminal B;
  • the terminal B After receiving the request information, the terminal B sends a request for obtaining a public network address to the relay server of the public network, and the relay server returns the public network address of the terminal B (the terminal B can also obtain its own public network port), and the terminal B obtains its own Private network address (terminal B can also obtain its own private network port);
  • the terminal B sends the request response information carrying the private network address and the public network address of the terminal B to the terminal A through the signaling server;
  • the terminal A starts to send a binding message (bind) to the relay server and the terminal B to perform media channel negotiation in parallel. After receiving the binding message, the relay server and the terminal B respond to the binding response message (bind response) to the terminal A; At the same time, the terminal B also sends a binding message (bind) to the relay server and the terminal A for media channel negotiation. After receiving the binding message, the relay server and the terminal A respond to the binding response message (bind response) to the terminal B;
  • the terminal A After receiving the bind response of the terminal B, the terminal A confirms the real public network address of the terminal B through reverse analysis. For the case where terminal A receives the bind response, there are several ways to deal with it:
  • terminal A If terminal A only receives the bind response of terminal B, terminal A establishes a point-to-point one-way data transmission channel from terminal A to terminal B, and terminal A starts to send media data to the public network address of terminal B (if terminal A and terminal B appear) In a special case in a private network, terminal A can send media data to the private network address of terminal B);
  • the terminal A If the terminal A only receives the bind response of the relay server, the terminal A establishes the relay of the terminal A to the terminal B to forward the unidirectional data transmission channel, and the terminal A starts to send the media data to the relay server, and the relay server performs the relay forwarding to the terminal B.
  • the terminal A receives the bind response of the terminal B and the relay server, the terminal A sets the point-to-point one-way data transmission channel of the terminal A to the terminal B according to the received chronological order. If the bind re-sponse of the relay server arrives first, the terminal A establishes the relay of the terminal A to the terminal B to forward the unidirectional data transmission channel, and then the terminal A starts to send the media data to the terminal B or the relay server, which has the advantage of letting the terminal B as early as possible. Receive media data, speed up the first frame display, and achieve second opening;
  • the process of the terminal B processing the received bind response is the same as that of the terminal A.
  • the terminal A and the terminal B respectively establish a unidirectional data transmission channel of the terminal A to the terminal B and a unidirectional data transmission channel of the terminal B to the terminal A,
  • the bidirectional data transmission channel between terminal A and terminal B is established.
  • the media data is transmitted using a composite channel, and the terminal A and the terminal B add data type identification information in the data packet header to distinguish different types of data such as audio, video, rtp, and rtcp.
  • different channels are established for each of the four media types to negotiate, and the signaling interaction is reduced to 16. This can greatly reduce the negotiation time and improve the efficiency and success rate of NAT traversal.
  • the terminal B can verify the validity of the channel id and update the public network address corresponding to the terminal A.
  • terminal A or terminal B In the process of negotiation and media transmission, if terminal A or terminal B detects that the public network address of the other party has changed, terminal A or terminal B checks the legality of the user ID of the other party, and if the validity check is passed, Update the public network address of the other party and send it directly to the public address of the updated party when you continue to send media data. Both terminal A and terminal B can know the user ID of the other party. The ICE standard process will do re-ice for this situation and renegotiate the media channel. In contrast, this embodiment can implement seamless media connection efficiently and quickly.
  • the terms “mounted,” “connected,” and “connected” are used in a broad sense, and may be, for example, a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be directly connected, or it can be connected indirectly through an intermediate medium, which can be the internal connection of two components.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

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  • Signal Processing (AREA)
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  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un procédé de traversée de traduction d'adresse de réseau (NAT) de données multimédias de multiples types, un terminal et un système. Selon une mise en œuvre spécifique du procédé : deux terminaux, situés dans un réseau privé et utilisant un dispositif NAT, établissent un canal de transmission de données bidirectionnel, le canal de transmission de données bidirectionnel comprenant deux canaux de transmission de données unidirectionnels, et chaque canal de transmission de données unidirectionnel étant un canal de transmission de données unidirectionnel entre homologues ou un canal de transmission de données unidirectionnel à transmission par relais ; et les deux terminaux ajoutent des informations d'identification de type de données dans l'en-tête des paquets de données et transmettent divers types de données multimédias à l'aide du canal de transmission de données bidirectionnel. La mise en œuvre optimise le processus de traversée de NAT et peut réduire l'interaction dans la négociation de signalisation durant une traversée de NAT, améliorer l'efficacité et le taux de réussite des traversées de NAT et accélérer l'affichage de la première trame d'un appel vidéo.
PCT/CN2018/105450 2018-03-28 2018-09-13 Procédé de traversée de traduction d'adresse de réseau de données multimédias de multiples types, terminal et système WO2019184262A1 (fr)

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