CN104821909B - End-to-end data transmission method and system - Google Patents
End-to-end data transmission method and system Download PDFInfo
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Abstract
The communication certification that the end-to-end data transmission method and system of the present invention, the first communicating terminal and the second communicating terminal carry out instant communication server is led to；Second terminal is sent and received messages by instant communication server to first terminal, instant communication server is when receiving the reception message of second terminal, sent to data relay server and establish the request of data session, transfer server is by the first terminal in the request for establishing data session and the identification information storage of second terminal to session mapping table；Transfer server enters data into udp port and data output udp port is sent to instant communication server, and the first terminal and second terminal are sent to most by instant communication server.Transfer server of the present invention safeguards a kind of session mapping table in application layer, the destination address that the data sent with determination are finally route, and will not take the resource of many udp ports, and the resource occupation of udp port significantly reduces, and has saved resource.
Description
Technical field
The present invention relates to a kind of related data transmission method of instant messaging and system, and in particular to a kind of end-to-end number
According to transmission method and system.
Background technology
It is end-to-end（P2P, peer to peer）The data communication of instant messaging between terminal, also referred to as P2P tr first terminals
Vers first terminals l, p2p are penetrated, and end to end communication both sides are likely to be in respective fire wall, it is necessary to which a kind of mechanism is being built
The data channel of vertical both sides.
Under prior art, end-to-end instant messaging (IM) exchanges the general framework of message and data as shown in figure 1, immediately
The general framework of (IM) the exchange message that communicates and data is as follows:
Typically all in respective fire wall, the main frame of two communications generally can not be joined directly together the both sides of P2P communications,
Need certain certain mechanism for penetrating.Transmitted for the small message of the data volumes such as word message, communicating pair can be directly with being
When the communication server establish tcp connections, server of the instant communication server as a transfer.
For the big data of the data volumes such as real-time audio and video, tcp connections are simultaneously improper, usually use UDP（ UDP User
D first terminal t first terminal gr first terminal m Protocol）It is transmitted, it is necessary to aid in the transfer server (ends of rel first
Hold y server).There are some fairly perfect solution methods now, for example rfc5766, Tr first terminal vers first is eventually
Hold l Using Rel first terminal ys first terminal round N first terminals T (TURN).
Existing TURN modes have following shortcoming:
1. data relay Service-Port take it is big, to the main frame of each communication, it is necessary to distribute a udp port
2. whole protocol definition is complicated, transfer server and instant communication server in client independently of each other, it is necessary to use
Different agreements goes to safeguard contacting between transfer server and instant communication server.
3. when the port of any one data channel changes, client needs to coordinate agreement to re-establish whole number
According to passage
Existing TURN penetrates the transmission suitable for big data quantity, such as the transmission of real-time audio and video.For a small amount of or
The application of intermediate data scale seems excessively complicated and improper, for example 1 second several second terminal yte sensing data passes
It is defeated.
Therefore, the prior art is defective, to be further improved and developed.
The content of the invention
It is an object of the invention to provide a kind of end-to-end data transmission method and system, makes system more simple possible, with
Preferably support the transmission of small data quantity or intermediate data amount.
To achieve these goals, the present invention adopts the following technical scheme that：
End-to-end data transmission method, suitable for carrying out instant messaging, institute between first terminal and second terminal
State and instant communication server and transfer server are set between first terminal and second terminal, wherein,
The communication certification that first communicating terminal and the second communicating terminal carry out instant communication server is led to；News certification passes through
Afterwards, the second terminal is sent and received messages by instant communication server to first terminal, and instant communication server is receiving
To second terminal reception message when, sent to data relay server and establish the request of data session, transfer server will be built
The identification information storage of first terminal and second terminal in the request of vertical data session is to session mapping table；
The transfer server enters data into udp port and data output udp port is sent to instant communication server,
The first terminal and second terminal are sent to by instant communication server；
First terminal and second terminal are established by the session establishment data channel of transfer server, data channel first
Afterwards, after transfer server receives data, by inquiring about session mapping table, currently transmitted destination interface is determined, it is final to realize
Data exchange.
Described end-to-end data transmission method, wherein, the first communicating terminal and the second communicating terminal carry out IMU
The communication certification of inquiry server specifically includes：
First communicating terminal sends data exchange request by timely communication server to the second communication, and second terminal passes through
Instant communication server sends confirmation request to first terminal.
Described end-to-end data transmission method, wherein, first terminal and second terminal pass through transfer server first
Session establishment data channel the step of include：
First terminal establishes the first udp port, and second terminal establishes the second udp port, and by respective udp port to
Data input udp port known to transfer server sends out certification request；
Transfer server obtains first terminal and the first udp port and the second udp port of second terminal, by first terminal
Session mapping table is arrived in respective udp port storage with second terminal, and establishes storage session id；
Session id is simultaneously returned to first terminal and second terminal by the transfer server, and the first terminal and second is eventually
After end all obtains session id, data channel, which is established, to be completed.
Described end-to-end data transmission method, wherein, the transfer server is by checking the of session mapping table
The identification information or first terminal of one terminal and second terminal, the respective udp port information of second terminal, and session id is returned
To the first terminal and second terminal.
Described end-to-end data transmission method, wherein, when the first terminal or any one section of port of second terminal
When changing, message informing transfer server, transfer server more new session mapping table are sent.
Described end-to-end data transmission method, wherein, the session mapping table includes a data input udp port
With a data output udp port.
Described end-to-end data transmission method, wherein, the identification information of the first terminal and second terminal includes
The IP address of first terminal and second terminal, MAC Address.
Described end-to-end data transmission method, wherein, the instant communication server is by the data of transfer server
Input udp port information and data output udp port information are added in the packet between first terminal and second terminal.
End-to-end data transmission system, for the instant messaging between terminal in first terminal and second, including position
One terminal and second terminal, instant communication server and transfer server are set between the first terminal and second terminal, its
It is characterised by,
The transfer server is setting session mapping table, the data input of the session mapping table storage transfer server
Udp port and data output udp port, establish the list of identification information of session both sides, the udp port information of session both sides and meeting
Talk about ID；
The communication certification that first communicating terminal and the second communicating terminal carry out instant communication server is led to；News certification passes through
Afterwards, the second terminal is sent and received messages by instant communication server to first terminal, and instant communication server is receiving
To second terminal reception message when, sent to data relay server and establish the request of data session, transfer server will be built
The identification information storage of first terminal and second terminal in the request of vertical data session is to session mapping table；
The transfer server enters data into udp port and data output udp port is sent to instant communication server,
The first terminal and second terminal are sent to by instant communication server；
First terminal and second terminal are received by the session establishment data channel of transfer server, transfer server first
To after data, by inquiring about session mapping table, currently transmitted destination interface is determined, finally realizes data exchange.
Described end-to-end data transmission system, wherein, the session mapping table includes a data input udp port
With a data output udp port.
The present invention provides the end-to-end data transmission method of the present invention and system, and transfer server is safeguarded a kind of in application layer
Session mapping table, the destination address that the data sent with determination are finally route, all data channel use transfer server phase
Same data input udp port and data output udp port, is not limited by different udp ports, will not take udp port
Resource, at most only need a data input udp port and a data output udp port.The present invention can also basis
Actual conditions are using multi-group data input udp port and data output udp port, but the resource occupation of udp port substantially subtracts
It is few, save resource.
Brief description of the drawings
Fig. 1 is existing end-to-end data transmission structure schematic diagram；
Fig. 2 is the flow chart of the end-to-end data transmission method of the present invention.
Embodiment
The present invention is described in further details with reference to preferred embodiment.
End-to-end data transmission method provided by the invention, suitable for the first terminal in the first fire wall, and
Instant messaging is carried out between second terminal in second fire wall, the first terminal and second terminal pass through instant messaging service
Device establishes tcp connections and carries out the small message transmission of the data volumes such as word message, and the first terminal and second terminal pass through transfer
Server carries out the transmission of the big data of data volume such as real-time audio and video using udp protocol.
The present invention safeguards a kind of session mapping table in the transfer server in application layer, in the session mapping table storage
Turn a data input udp port and a data output udp port for server, establish the identification information row of session both sides
Table, the udp port information and session id of session both sides, the data transmission method between the first terminal and second terminal include
Following steps：
First communicating terminal and the second communicating terminal carry out the communication certification of instant communication server, preferable first communication
Terminal by timely communication server to second communication send data exchange request, second terminal by instant communication server to
First terminal sends confirmation request.
First communicating terminal and the second communicating terminal carry out the communication certification of instant communication server by rear, second terminal
Sent and received messages by instant communication server to first terminal, instant communication server is receiving the reception of second terminal
During message, the request for establishing data session is sent to data relay server, the request for establishing data session includes first
The identification information of terminal and second terminal, transfer server initializes the session mapping table, by first terminal and second terminal
Identification information storage to session mapping table.The identification information specifies the destination of data transfer.
The transfer server enters data into udp port and data output udp port is sent to instant communication server,
The first terminal and second terminal are sent to by instant communication server.
The instant communication server can be by the data input udp port and data output udp port of transfer server
It is added in the packet between first terminal and second terminal.The first terminal and the identification information of second terminal include the
The IP address of one terminal and second terminal, MAC Address etc., are not limited here.
The first terminal and second terminal obtain the address of transfer server by sending out message to instant communication server,
Udp port and data output udp port are entered data into including transfer server.
When first terminal and second terminal need to carry out data transmission by transfer server, first terminal and second terminal
Respective UDP ends are established by the session establishment data channel of transfer server, preferable first terminal, second terminal first
Mouth is used for data exchange, such as first terminal establishes the first udp port, and second terminal establishes the second udp port, and by respective
Udp port to transfer server known to data input udp port hair certification request.Transfer server obtain first terminal and
The first udp port and the second udp port of second terminal, the respective udp port storage of first terminal and second terminal is arrived
Session mapping table, and establish storage session id.
The transfer server is by checking the first terminal of session mapping table and the identification information of second terminal or first
Terminal, the respective udp port information of second terminal, and session id is returned into first terminal and second terminal；
After the first terminal and second terminal all obtain session id, data channel, which is established, to be completed, and first terminal, second eventually
End can send data by respective udp port to the data input udp port of transfer server.
After transfer server receives data, by inquiring about session mapping table, that is, by inquiring about in session mapping table
The identification information of data receiving terminal, currently transmitted destination interface is determined, finally realizes data exchange.
When first terminal or any one section of port of second terminal change, message informing transfer server, transfer are sent
Server update session mapping table, you can quickly complete the quick foundation of data channel.
The end-to-end data transmission method of the present invention, after transfer server receives data, by inquiring about session mapping table,
Currently transmitted destination interface is determined, finally realizes data exchange, first terminal, any one section of port of second terminal changes
When, send message informing transfer server, transfer server more new session mapping table, you can quickly complete the fast of data channel
Run-up is stood.
The transfer server of the present invention safeguards a kind of session mapping table in application layer, to determine the data of transmission finally by road
By destination address, all data channel use transfer server identical data input udp port and data output UDP ends
Mouthful, do not limited by different udp ports, the resource of udp port will not be taken, at most only need a data input udp port
With a data output udp port.The present invention can also use multi-group data input udp port sum according to actual conditions
According to output udp port, but the resource occupation of udp port significantly reduces, and has saved resource.
The transfer server and instant communication server of the end-to-end data transmission method of the present invention closely merge, complexity
Degree is put into service end, greatly reduces the design of client when FPDP changes, can send independent message to
Transfer server, transfer server upgrade in time session mapping table.This method is penetrated for the TURN of standard and improved, if
The Data Transport Protocol of more simple possible is counted, preferably to support the transmission of small data quantity or intermediate data amount, suitable for use
In loading relatively low data stream transmitting, the use of the design complexities and resource of system can be mitigated significantly.
End-to-end data transmission system provided by the invention, for the IMU between terminal in first terminal and second
News, including the second terminal in the first terminal in the first fire wall, and the second fire wall.The first terminal and second
Instant communication server and transfer server are set between terminal.
The present invention sets session mapping table, the session mapping table storage transfer clothes in the transfer server in application layer
The data input udp port and data output udp port of business device, the list of identification information of session both sides is established, session both sides'
Udp port information and session id.
The communication certification of first communicating terminal and the second communicating terminal progress instant communication server, preferable described first
Communicating terminal sends data exchange request by timely communication server to the second communication, and second terminal passes through instant messaging service
Device sends confirmation request to first terminal.
First communicating terminal and the second communicating terminal carry out the communication certification of instant communication server by rear, second terminal
Sent and received messages by instant communication server to first terminal, instant communication server is receiving the reception of second terminal
During message, the request for establishing data session is sent to data relay server, the request for establishing data session includes first
The identification information of terminal and second terminal, transfer server initializes the session mapping table, by first terminal and second terminal
Identification information storage to session mapping table.The identification information specifies the destination of data transfer.
The transfer server enters data into udp port and data output udp port is sent to instant communication server,
The first terminal and second terminal are sent to by instant communication server.
The instant communication server can be by the data input udp port and data output udp port of transfer server
It is added in the packet between first terminal and second terminal.The first terminal and the identification information of second terminal include the
The IP address of one terminal and second terminal, MAC Address etc., are not limited here.
The first terminal and second terminal obtain the address of transfer server by sending out message to instant communication server,
Udp port and data output udp port are entered data into including transfer server.
When first terminal and second terminal need to carry out data transmission by transfer server, first terminal and second terminal
Respective UDP ends are established by the session establishment data channel of transfer server, preferable first terminal, second terminal first
Mouth is used for data exchange, such as first terminal establishes the first udp port, and second terminal establishes the second udp port, and by respective
Udp port to transfer server known to data input udp port hair certification request.Transfer server obtain first terminal and
The first udp port and the second udp port of second terminal, the respective udp port storage of first terminal and second terminal is arrived
Session mapping table, and establish storage session id.
The transfer server is by checking the first terminal of session mapping table and the identification information of second terminal or first
Terminal, the respective udp port information of second terminal, and session id is returned into first terminal and second terminal；
After the first terminal and second terminal all obtain session id, data channel, which is established, to be completed, and first terminal, second eventually
End can send data by respective udp port to the data input udp port of transfer server.
After transfer server receives data, by inquiring about session mapping table, that is, by inquiring about in session mapping table
The identification information of data receiving terminal, currently transmitted destination interface is determined, finally realizes data exchange.
Above content is the explanation to a preferred embodiment of the present invention, can help those skilled in the art more fully
Understand technical scheme.But these embodiments are merely illustrative, it is impossible to assert the specific embodiment party of the present invention
Formula is only limitted to the explanation of these embodiments.
Claims (8)
1. end-to-end data transmission method, suitable for carrying out instant messaging between first terminal and second terminal, described first
Instant communication server and transfer server are set between terminal and second terminal, it is characterised in that
The communication certification that first communicating terminal and the second communicating terminal carry out instant communication server is led to；Certification is interrogated by rear, institute
State second terminal to send and receive messages to first terminal by instant communication server, instant communication server is receiving second
During the reception message of terminal, the request for establishing data session is sent to data relay server, transfer server will establish data
The identification information storage of first terminal and second terminal in the request of session is to session mapping table；The transfer server is by number
Instant communication server is sent to according to input udp port and data output udp port, is sent to by instant communication server described
First terminal and second terminal；
First terminal and second terminal are first by the session establishment data channel of transfer server, after data channel is established, in
Turn after server receives data, by inquiring about session mapping table, to determine that currently transmitted destination interface realizes data exchange；Institute
A data input udp port and a data output udp port for session mapping table storage transfer server is stated, establishes session
The list of identification information of both sides, the udp port information and session id of session both sides；The first terminal and second terminal pass through i.e.
When the communication server establish the transmission that tcp connections carry out the small data of data volume；The first terminal and second terminal are in
Turn the transmission that server carries out the big data of data volume using udp protocol；The session mapping table is in the transfer server
Application layer is safeguarded.
2. end-to-end data transmission method according to claim 1, it is characterised in that the first communicating terminal and second leads to
The communication certification that news terminal carries out instant communication server specifically includes：
First communicating terminal sends data exchange request by timely communication server to the second communication, and second terminal passes through instant
The communication server sends confirmation request to first terminal.
3. end-to-end data transmission method according to claim 1, it is characterised in that first terminal and second terminal are first
The step of session establishment data channel for first passing through transfer server, includes：
First terminal establishes the first udp port, and second terminal establishes the second udp port, and by respective udp port to transfer
Data input udp port known to server sends out certification request；
Transfer server obtains first terminal and the first udp port and the second udp port of second terminal, by first terminal and
Session mapping table is arrived in the respective udp port storage of two terminals, and establishes storage session id；
Session id is simultaneously returned to first terminal and second terminal by the transfer server, and the first terminal and second terminal are all
After obtaining session id, data channel, which is established, to be completed.
4. end-to-end data transmission method according to claim 3, it is characterised in that the transfer server is by looking into
See the first terminal of session mapping table and the identification information of second terminal or first terminal, the respective udp port letter of second terminal
Breath, and session id is returned into the first terminal and second terminal.
5. end-to-end data transmission method according to claim 1, it is characterised in that when the first terminal or second
When any one section of port of terminal changes, message informing transfer server, transfer server more new session mapping table are sent.
6. end-to-end data transmission method according to claim 1, it is characterised in that the first terminal and second is eventually
The identification information at end includes first terminal and IP address, the MAC Address of second terminal.
7. end-to-end data transmission method according to claim 1, it is characterised in that the instant communication server will
The data input udp port information and data output udp port information of transfer server are added to first terminal and second terminal
Between packet in.
8. end-to-end data transmission system, for the instant messaging between terminal in first terminal and second, including the first end
End and second terminal, instant communication server and transfer server, its feature are set between the first terminal and second terminal
It is,
The transfer server is setting session mapping table, the data input UDP of the session mapping table storage transfer server
Port and data output udp port, establish the list of identification information of session both sides, the udp port information of session both sides and session
ID；
The communication certification that first communicating terminal and the second communicating terminal carry out instant communication server is led to；Certification is interrogated by rear, institute
State second terminal to send and receive messages to first terminal by instant communication server, instant communication server is receiving second
During the reception message of terminal, the request for establishing data session is sent to data relay server, transfer server will establish data
The identification information storage of first terminal and second terminal in the request of session is to session mapping table；
The transfer server enters data into udp port and data output udp port is sent to instant communication server, by i.e.
When communication server be sent to the first terminal and second terminal；
First terminal and second terminal receive number by the session establishment data channel of transfer server, transfer server first
According to rear, by inquiring about session mapping table, determine that currently transmitted destination interface realizes data exchange；The session mapping table storage
A data input udp port and a data output udp port for transfer server, establish the identification information row of session both sides
Table, the udp port information and session id of session both sides；The first terminal and second terminal are established by instant communication server
Tcp connections carry out the transmission of the small data of data volume；The first terminal and second terminal are assisted by transfer server using UDP
View carries out the transmission of the big data of data volume；The session mapping table is safeguarded in the application layer of the transfer server.
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| CN201510193250.6A CN104821909B (en) | 2015-04-22 | 2015-04-22 | End-to-end data transmission method and system |
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| CN201510193250.6A CN104821909B (en) | 2015-04-22 | 2015-04-22 | End-to-end data transmission method and system |
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| CN108696772B (en) * | 2017-04-11 | 2021-07-16 | 苏州谦问万答吧教育科技有限公司 | Real-time video transmission method and device |
| CN109688038B (en) * | 2017-10-18 | 2021-06-25 | 中国移动通信有限公司研究院 | End-to-end Non-IP transmission method and device, device and storage medium |
| CN108173928B (en) * | 2017-12-26 | 2019-02-05 | 北京百度网讯科技有限公司 | Method, apparatus, storage medium and the terminal device of UDP message transmission |
| CN108494757A (en) * | 2018-03-14 | 2018-09-04 | 武汉大学 | A kind of router concealed communication method based on OpenWrt systems |
| CN111092805A (en) * | 2019-12-17 | 2020-05-01 | 北京众享比特科技有限公司 | Instant messaging method, device, equipment and medium based on DHT network |
| CN111343083B (en) * | 2020-05-22 | 2020-08-11 | 支付宝(杭州)信息技术有限公司 | Instant messaging method, instant messaging device, electronic equipment and readable storage medium |
| CN112770072B (en) * | 2020-12-30 | 2022-12-02 | 北京北信源软件股份有限公司 | Data transmission method, device and storage medium |
| CN112866091B (en) * | 2021-01-21 | 2022-09-13 | 即时匹配(上海)网络科技有限公司 | Instant communication system and communication method |
| CN115695490A (en) * | 2022-10-28 | 2023-02-03 | 东软睿驰汽车技术（沈阳）有限公司 | Method and device for transferring data, electronic equipment and vehicle |
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| JP2005117587A (en) * | 2003-10-10 | 2005-04-28 | Newrong Inc | Communication method |
| CN101977178A (en) * | 2010-08-09 | 2011-02-16 | 中兴通讯股份有限公司 | Relay-based media channel establishing method and system |
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| TWI262678B (en) * | 2004-06-30 | 2006-09-21 | Inst Information Industry | Peer-to-peer communication system, method and machine-readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005117587A (en) * | 2003-10-10 | 2005-04-28 | Newrong Inc | Communication method |
| CN101977178A (en) * | 2010-08-09 | 2011-02-16 | 中兴通讯股份有限公司 | Relay-based media channel establishing method and system |
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