CN105791432A - Point to point (P2P) communication method and system - Google Patents
Point to point (P2P) communication method and system Download PDFInfo
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- CN105791432A CN105791432A CN201610268748.9A CN201610268748A CN105791432A CN 105791432 A CN105791432 A CN 105791432A CN 201610268748 A CN201610268748 A CN 201610268748A CN 105791432 A CN105791432 A CN 105791432A
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- 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
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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- 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
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Abstract
The present invention discloses a P2P communication method and system, wherein the P2P communication method comprises the steps of using a user node to interact with a signaling/code stream forwarding server to obtain an own first IP address and a first UDP port; using the user node to forward a communication connection request comprising the first IP address and the first UDP port to a target node via the signaling/code stream forwarding server; after the target node receives the communication connection request, using the target node to interact with the signaling/code stream forwarding server to obtain an own second IP address and a second UDP port, and forwarding the information to the user node; using the user node and the target node to forward the hole punching requests to each other via the signaling/code stream forwarding server to require to carry out the UDP hole punching with each other; if the user node receives a hole punching response message, carrying out the point to point communication with the target node; if the user node does not receive the hole punching response message, communicating with the target node via the signaling/code stream forwarding server.
Description
Technical field
The present invention relates to and realize point-to-point (PointtoPoint based on the terminal access-in management field of the Internet, the Internet, P2P) terminal called field and mobile Internet realize point-to-point terminal called field, particularly relate to a kind of P2P communication means and P2P communication system.
Background technology
The mode of the existing reliable UPnPPortmapping of the web camera based on the Internet (plug and play port mapping) mapped port realizes the mutual access between terminal.This mode major defect has: 1) a lot of router defaults are to close UPNP function, it is necessary to user is manually entered configuration of routers and opens, and so operation hell to pay does not accomplish real plug and play.2) it is in the following web camera of multistage route to be difficult to each layer of route is all realized UPNP mapping.
Meanwhile, the penetrating system of existing existence also has to do based on gateway type and penetrates.The major defect of this mode has: 1) having 3 kinds in 16 kinds of combinational network situations of gateway type is to realize P2P communication.As shown in table 1.2) above-mentioned three kinds of situations are also to realize P2P communication when mobile Internet 4G.
Table 1
The through-transmission technique existed now also has the mode using erection private server to forward.This mode main drawback is that when web camera quantity the comparison of the growth is fast, on the one hand, the expense of server is very high.On the other hand, if by terminals such as mobile phones, major part user checks that camera video there will be serious card, the even situation of private server paralysis.
In view of this, the use cost be necessary to provide a kind of user's of being capable of zero configuration in fact, solving private server or forwarding server and the P2P communication means avoiding private server or forwarding server to paralyse are to solve the defect of prior art.
Summary of the invention
The technical problem to be solved is to provide a kind of P2P communication means, no matter it is by P2P passage or by signaling/code stream forwarding server forwarding between destination node and user node, state between destination node and user node and control command carry out forwarding always by signaling/code stream forwarding server, not by the restriction of NAT (network address translation) with fire wall, therefore, user node is without configuration, thus what improve " zero arrange " of user node or " plug and play " equipment is use practicality.Forward or emergency code circulation additionally, the signaling/code stream forwarding server in the present invention is served only for simple signaling, be not used in long code phase circulation and send out, therefore forwarding server cost is low, meanwhile, when user node is too much, it is not easy to cause signaling/code stream forwarding server paralysis.
In order to solve the problems referred to above, the invention provides a kind of P2P communication means, comprise the steps:
User node and signaling/code stream forwarding server obtain an IP address and the first udp port of self alternately.
User node forwards the communication connection request that includes an IP address and the first udp port to the destination node specified by communication connection request by above-mentioned signaling/code stream forwarding server.
After above-mentioned destination node receives communication connection request, obtain self the 2nd IP address and the second udp port alternately with signaling/code stream forwarding server and forward this information to initiate the user node of communication connection request by signaling/code stream forwarding server.
User node and destination node forward the request of burrowing to the other side respectively through signaling/code stream forwarding server, carry out UDP with request with the other side and burrow.
If user node receives the response message that burrows that destination node sends, user node and destination node carry out point-to-point communication.
If user node does not receive the response message that burrows that destination node sends, user node and destination node are communicated by signaling/code stream forwarding server.
Preferably, before user node and signaling/code stream forwarding server obtain the IP address of self and the step of the first udp port alternately, including:
The all web cameras being under port restriction pyramid type or under symmetry gateway of signaling/code stream forwarding server mark are as ordinary node.
Signaling/code stream forwarding server identifies all web cameras being under complete pyramid type or being under the limited pyramid type of IP as super node.
The distribution of signaling/code stream forwarding server at least includes the multiple super nodes being under complete pyramid type super node to each ordinary node, to realize the super node list of point-to-point communication between ordinary node and multiple super node formation and ordinary node point to-point communication.
Preferably, if user node do not receive destination node send the response message that burrows step after also include:
Super node list is forwarded to user node by signaling/code stream forwarding server by destination node.
User node forwards the request of burrowing to each super node in super node list by signaling/code stream forwarding server, carries out UDP with request and each super node and burrows.
If user node receives the response message that burrows that any one super node sends, user node communicates with destination node by sending the super node of the response message that burrows.
If user node does not receive the response message that burrows that any one super node sends, user node and destination node are communicated by signaling/code stream forwarding server.
In order to solve the problems referred to above, present invention also offers a kind of P2P communication system, including user node, signaling/code stream forwarding server and destination node.User node includes user node data obtaining module, user node sending module, user node burrow module and Communications Processor Module.Destination node includes destination node data obtaining module, destination node sending module and destination node and burrows module.User node data obtaining module for obtaining self an IP address and the first udp port alternately with signaling/code stream forwarding server.User node sending module, for forwarding the communication connection request that includes an IP address and the first udp port to the destination node specified by communication connection request by above-mentioned signaling/code stream forwarding server.Destination node data obtaining module, after being used for receiving communication connection request, with the 2nd IP address and the second udp port that signaling/code stream forwarding server obtains self alternately.Destination node sending module for being forwarded to the user node initiating communication connection request by signaling/code stream forwarding server by the 2nd IP address and the second udp port.User node burrows module for forwarding the request of burrowing to destination node by signaling/code stream forwarding server, carries out UDP with request and this destination node and burrows.Meanwhile, destination node burrows module, for forwarding the request of burrowing to user node by signaling/code stream forwarding server, carries out UDP with request and this user node and burrows.Communications Processor Module, if for receiving the response message that burrows that destination node sends, user node and destination node carry out point-to-point communication.Communications Processor Module, if for not receiving the response message that burrows that destination node sends, user node and destination node are communicated by signaling/code stream forwarding server.
Preferably, signaling/code stream forwarding server includes ordinary node mark module, super node mark module and super node distribution module.
Ordinary node mark module is for identifying all web cameras being under port restriction pyramid type or under symmetry gateway as ordinary node.Super node mark module is for identifying all web cameras being under complete pyramid type or being under the limited pyramid type of IP as super node.Super node distribution module assignment at least includes the multiple super nodes being under complete pyramid type super node to each ordinary node, to realize the super node list of point-to-point communication between ordinary node and multiple super node formation and ordinary node point to-point communication.
Preferably, destination node also includes super node list sending module.Super node list sending module is for being forwarded to user node by super node list by signaling/code stream forwarding server.User node burrows module for forwarding the request of burrowing to each super node in super node list by signaling/code stream forwarding server, carries out UDP with request and each super node and burrows.If Communications Processor Module is for receiving the response message that burrows that any one super node sends, user node communicates with destination node by sending the super node of the response message that burrows.If Communications Processor Module is not for receiving the response message that burrows that any one super node sends, user node and destination node are communicated by signaling/code stream forwarding server.
Compared with prior art, no matter it is by P2P passage or by signaling/code stream forwarding server forwarding between destination node and user node in the present invention, state between destination node and user node and control command carry out forwarding always by signaling/code stream forwarding server, not by the restriction of NAT (network address translation) with fire wall, therefore, user node is without configuration, thus what improve " zero arrange " of user node or " plug and play " equipment is use practicality.Forward or emergency code circulation additionally, the signaling/code stream forwarding server in the present invention is served only for simple signaling, be not used in long code phase circulation and send out, therefore forwarding server cost is low, meanwhile, when user node is too much, it is not easy to cause signaling/code stream forwarding server paralysis.
Accompanying drawing explanation
Fig. 1 is the high-level schematic functional block diagram of a kind of embodiment of P2P communication system of the present invention.
Fig. 2 is the frame structure schematic diagram of a kind of embodiment of P2P communication system of Fig. 1.
Fig. 3 is the frame structure schematic diagram of the P2P communication system another kind embodiment of Fig. 1.
Fig. 4 is the frame structure schematic diagram after the extension of the P2P communication system of Fig. 3.
Fig. 5 is the schematic flow sheet of a kind of embodiment of P2P communication means of the present invention.
Fig. 6 is the schematic flow sheet of P2P communication means another kind embodiment of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, be not used to limit the present invention.
Fig. 1～Fig. 4 illustrates a kind of embodiment of P2P communication system of the present invention.In the present embodiment, as depicted in figs. 1 and 2, this P2P communication system includes user node 2, signaling/code stream forwarding server 1 and destination node 3.It should be noted that the user node 2 in the present embodiment is mobile communication equipment, such as: mobile phone, panel computer etc..Additionally, the destination node 3 in the present embodiment is web camera.Wherein, user node 2 includes user node data obtaining module 21, user node sending module 22, user node burrow module 23 and Communications Processor Module 24.Destination node 3 includes destination node data obtaining module 31, destination node sending module 32 and destination node and burrows module 33.
User node data obtaining module 21 for obtaining self an IP address and the first udp port alternately with signaling/code stream forwarding server 1.User node sending module 22, for forwarding the communication connection request that includes an IP address and the first udp port to the destination node 3 specified by communication connection request by above-mentioned signaling/code stream forwarding server 1.Destination node data obtaining module 31, after being used for receiving communication connection request, with the 2nd IP address and the second udp port that signaling/code stream forwarding server 1 obtains self alternately.Destination node sending module 32 for being forwarded to the user node 2 initiating communication connection request by signaling/code stream forwarding server 1 by the 2nd IP address and the second udp port.User node burrows module 23 for forwarding the request of burrowing to destination node 3 by signaling/code stream forwarding server 1, carries out UDP with request with 3, this target joint and burrows.Meanwhile, destination node burrows module 33, for forwarding the request of burrowing to user node 2 by signaling/code stream forwarding server 1, carries out UDP with request and this user node 2 and burrows.Communications Processor Module 24, if for receiving the response message that burrows that destination node 3 sends, user node 2 and destination node 3 carry out point-to-point communication.Communications Processor Module 24, if for not receiving the response message that burrows that destination node 3 sends, user node 2 is communicated by signaling/code stream forwarding server 1 with destination node 3.No matter the present embodiment is by P2P passage or by signaling/code stream forwarding server forwarding between destination node and user node, state between destination node and user node and control command carry out forwarding always by signaling/code stream forwarding server, not by the restriction of NAT (network address translation) with fire wall, therefore, user node is without configuration, thus what improve " zero arrange " of user node or " plug and play " equipment is use practicality.Forward or emergency code circulation additionally, the signaling/code stream forwarding server in the present invention is served only for simple signaling, be not used in long code phase circulation and send out, therefore forwarding server cost is low, meanwhile, when user node is too much, it is not easy to cause signaling/code stream forwarding server paralysis.
In order to further promote the penetrance of P2P communication system, penetration speed, the stability penetrated and reliability.In certain embodiments, referring to Fig. 1, signaling/code stream forwarding server 1 includes ordinary node mark module 11, super node mark module 12 and super node distribution module 13.Destination node 3 also includes super node list sending module 34.First, ordinary node mark module 11 is for identifying all web cameras being under port restriction pyramid type or under symmetry gateway as ordinary node 4.Super node mark module 12 is for identifying all web cameras being under complete pyramid type or being under the limited pyramid type of IP as super node 5.Super node distribution module 13 is distributed and is at least included the multiple super nodes being under complete pyramid type super node 55 to each ordinary node 4, to realize the super node list of point-to-point communication between ordinary node 4 and multiple super node 5 formation and ordinary node point to-point communication.
Referring to Fig. 3, when destination node 3 is ordinary node, P2P can not be made directly between user node 2 with destination node 3 and communicate.In such cases, the super node list sending module 34 of destination node 3 is for being forwarded to user node 2 by super node list by signaling/code stream forwarding server 1.User node burrows module 23 for forwarding the request of burrowing to each super node in super node list by signaling/code stream forwarding server 1, carries out UDP with request and each super node and burrows.If Communications Processor Module 24 is for receiving the response message that burrows that any one super node sends, user node communicates with destination node by sending the super node of the response message that burrows.If Communications Processor Module 24 is not for receiving the response message that burrows that any one super node sends, user node is communicated by signaling/code stream forwarding server 1 with destination node.The present embodiment is by distributing multiple super nodes for each ordinary node, so that when user node 2 sets up communication connection with destination node 3, user node 2 and destination node 3 can set up point-to-point communication by super node, cause described in table 1 three kinds of not transparent situations to penetrate, therefore improve the penetrance of P2P communication system.
When the ordinary node 4 in P2P communication system and super node 5 get more and more, constitute supernet as shown in Figure 4, in order to know the annexation that user node, ordinary node and super node are described, therefore, do not describe out in the diagram by the annexation of signaling/between code stream forwarding server and above-mentioned node.Therefore, when the number of the super node 5 in the P2P communication system of the present embodiment with ordinary node 4 is more and more talked about, the penetration speed of the present embodiment P2P communication system, the stability penetrated and reliability will obtain the lifting of matter.
Fig. 5 illustrates a kind of embodiment of P2P communication means of the present invention.In the present embodiment, this P2P communication means comprises the steps:
Step S1, user node and signaling/code stream forwarding server obtain an IP address and the first udp port of self alternately.
Step S2, user node forwards the communication connection request that includes an IP address and the first udp port to the destination node specified by communication connection request by above-mentioned signaling/code stream forwarding server.
Step S3, after above-mentioned destination node receives communication connection request, obtain self the 2nd IP address and the second udp port alternately with signaling/code stream forwarding server and forward this information to initiate the user node of communication connection request by signaling/code stream forwarding server.
Step S4, user node and destination node forward the request of burrowing to the other side respectively through signaling/code stream forwarding server, carry out UDP with request with the other side and burrow.
Step S5, it is judged that whether user node receives the response message that burrows that destination node sends.If user node receives the response message that burrows that destination node sends, perform step S6.If user node does not receive the response message that burrows that destination node sends, perform step S7.
Step S6, user node and destination node carry out point-to-point communication.
Step S7, user node and destination node are communicated by signaling/code stream forwarding server.
Fig. 6 illustrates the another kind of embodiment of P2P communication means of the present invention.In the present embodiment, this P2P communication means comprises the steps:
Step S11, all web cameras being under port restriction pyramid type or under symmetry gateway of signaling/code stream forwarding server mark are as ordinary node.
Step S12, signaling/code stream forwarding server identifies all web cameras being under complete pyramid type or being under the limited pyramid type of IP as super node.
Step S13, the distribution of signaling/code stream forwarding server at least includes the multiple super nodes being under complete pyramid type super node to each ordinary node, to realize the super node list of point-to-point communication between ordinary node and multiple super node formation and ordinary node point to-point communication.
Step S14, user node and signaling/code stream forwarding server obtain an IP address and the first udp port of self alternately.
Step S15, user node forwards the communication connection request that includes an IP address and the first udp port to the destination node specified by communication connection request by above-mentioned signaling/code stream forwarding server.
Step S16, after above-mentioned destination node receives communication connection request, obtain self the 2nd IP address and the second udp port alternately with signaling/code stream forwarding server and forward this information to initiate the user node of communication connection request by signaling/code stream forwarding server.
Step S17, user node and destination node forward the request of burrowing to the other side respectively through signaling/code stream forwarding server, carry out UDP with request with the other side and burrow.
Step S18, it is judged that whether user node receives the response message that burrows that destination node sends.If user node receives the response message that burrows that destination node sends, perform step S19.If user node does not receive the response message that burrows that destination node sends, perform step S20.
Step S19, family node and destination node carry out point-to-point communication.
Step S20, super node list is forwarded to user node by signaling/code stream forwarding server by destination node.
Step S21, user node forwards the request of burrowing to each super node in super node list by signaling/code stream forwarding server, carries out UDP with request and each super node and burrows.
Step S22, it is judged that whether user node receives the response message that burrows that any one super node sends.If user node receives the response message that burrows that any one super node sends, perform step S23.If user node does not receive the response message that burrows that any one super node sends, perform step S24.
Step S23, user node communicates with destination node by sending the super node of the response message that burrows.
Step S24, user node and destination node are communicated by signaling/code stream forwarding server.
It should be noted that; P2P communication means in above-described embodiment and P2P communication system; it is applicable not only to point-to-point terminal called field, the Internet and is applicable to the point-to-point terminal called field of mobile Internet; therefore; it is no matter point-to-point terminal called field or in mobile Internet point-to-point terminal called field application technical scheme in the Internet, all within protection scope of the present invention.
Above the detailed description of the invention of invention being described in detail, but it is only used as example, the present invention is not limiting as and specific embodiments described above.For a person skilled in the art, any equivalent modifications that this invention is carried out or replacement are also all among scope of the invention, therefore, the impartial conversion made under without departing from the spirit and principles in the present invention scope and amendment, improvement etc., all should contain within the scope of the invention.
Claims (6)
1. a P2P communication means, it is characterised in that comprise the steps:
User node and signaling/code stream forwarding server obtain an IP address and the first udp port of self alternately；
User node forwards the destination node specified by communication connection request extremely described communication connection request including a described IP address and described first udp port by above-mentioned signaling/code stream forwarding server；
After above-mentioned destination node receives described communication connection request, obtain self the 2nd IP address and the second udp port alternately with described signaling/code stream forwarding server and forward this information to initiate the user node of described communication connection request by described signaling/code stream forwarding server；
User node and destination node forward the request of burrowing to the other side respectively through described signaling/code stream forwarding server, carry out UDP with request with the other side and burrow；
If user node receives the response message that burrows that described destination node sends, described user node and described destination node carry out point-to-point communication；
If user node does not receive the response message that burrows that described destination node sends, described user node and described destination node are communicated by described signaling/code stream forwarding server.
2. P2P communication means according to claim 1, it is characterised in that before user node and signaling/code stream forwarding server obtain the IP address of self and the step of the first udp port alternately, including:
The all web cameras being under port restriction pyramid type or under symmetry gateway of signaling/code stream forwarding server mark are as ordinary node；
Signaling/code stream forwarding server identifies all web cameras being under complete pyramid type or being under the limited pyramid type of IP as super node；
The distribution of signaling/code stream forwarding server at least includes the multiple super nodes being under complete pyramid type super node to each ordinary node, to realize the super node list of point-to-point communication between described ordinary node and the plurality of super node formation and described ordinary node point to-point communication.
3. P2P communication means according to claim 2, it is characterised in that if user node do not receive described destination node send the response message that burrows step after also include:
Described super node list is forwarded to described user node by described signaling/code stream forwarding server by destination node；
User node forwards the request of burrowing to each super node in described super node list by described signaling/code stream forwarding server, carries out UDP with request and each super node and burrows；
If user node receives the response message that burrows that any one super node sends, described user node is communicated with described destination node by the super node of the response message that burrows described in transmission；
If user node does not receive the response message that burrows that any one super node sends, described user node and described destination node are communicated by described signaling/code stream forwarding server.
4. a P2P communication system, it is characterised in that include user node, signaling/code stream forwarding server and destination node；Described user node includes user node data obtaining module, user node sending module, user node burrow module and Communications Processor Module；Described destination node includes destination node data obtaining module, destination node sending module and destination node and burrows module；Described user node data obtaining module for obtaining self an IP address and the first udp port alternately with signaling/code stream forwarding server；Described user node sending module, for forwarding the destination node specified by the communication connection request extremely described communication connection request including a described IP address and described first udp port by above-mentioned signaling/code stream forwarding server；Described destination node data obtaining module, after being used for receiving described communication connection request, with the 2nd IP address and the second udp port that described signaling/code stream forwarding server obtains self alternately；Described destination node sending module is for being forwarded to, by described 2nd IP address and the second udp port, the user node initiating described communication connection request by described signaling/code stream forwarding server；Described user node burrows module for forwarding the request of burrowing to described destination node by described signaling/code stream forwarding server, carries out UDP with request and this destination node and burrows；Meanwhile, described destination node burrows module, for forwarding the request of burrowing to described user node by described signaling/code stream forwarding server, carries out UDP with request and this user node and burrows；Described Communications Processor Module, if for receiving the response message that burrows that described destination node sends, described user node and described destination node carry out point-to-point communication；Described Communications Processor Module, if for not receiving the response message that burrows that described destination node sends, described user node and described destination node are communicated by described signaling/code stream forwarding server.
5. P2P communication system according to claim 4, it is characterised in that described signaling/code stream forwarding server includes ordinary node mark module, super node mark module and super node distribution module；Described ordinary node mark module is for identifying all web cameras being under port restriction pyramid type or under symmetry gateway as ordinary node；Described super node mark module is for identifying all web cameras being under complete pyramid type or being under the limited pyramid type of IP as super node；Described super node distribution module assignment at least includes the multiple super nodes being under complete pyramid type super node to each ordinary node, to realize the super node list of point-to-point communication between described ordinary node and the plurality of super node formation and described ordinary node point to-point communication.
6. P2P communication system according to claim 5, it is characterised in that described destination node also includes super node list sending module；Described super node list sending module is for being forwarded to described user node by described super node list by described signaling/code stream forwarding server；Described user node burrows module for forwarding the request of burrowing to each super node in described super node list by described signaling/code stream forwarding server, carries out UDP with request and each super node and burrows；If described Communications Processor Module is for receiving the response message that burrows that any one super node sends, described user node is communicated with described destination node by the super node of the response message that burrows described in transmission；If described Communications Processor Module is not for receiving the response message that burrows that any one super node sends, described user node and described destination node are communicated by described signaling/code stream forwarding server.
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| CN107508894A (en) * | 2017-08-29 | 2017-12-22 | 环球智达科技（北京）有限公司 | A kind of mission bit stream processing system |
| CN108063921A (en) * | 2017-12-26 | 2018-05-22 | 天津天地人和企业管理咨询有限公司 | A kind of optimization application process of embedded network monitoring equipment in P2P |
| CN110933197A (en) * | 2019-11-27 | 2020-03-27 | 太仓市同维电子有限公司 | Distributed proxy network |
| CN110933197B (en) * | 2019-11-27 | 2022-04-19 | 太仓市同维电子有限公司 | Distributed proxy network |
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