CN109587450A - Method of transmitting video data and system - Google Patents
Method of transmitting video data and system Download PDFInfo
- Publication number
- CN109587450A CN109587450A CN201811563920.9A CN201811563920A CN109587450A CN 109587450 A CN109587450 A CN 109587450A CN 201811563920 A CN201811563920 A CN 201811563920A CN 109587450 A CN109587450 A CN 109587450A
- Authority
- CN
- China
- Prior art keywords
- data
- server
- request
- video
- network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
- H04L63/0236—Filtering by address, protocol, port number or service, e.g. IP-address or URL
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0281—Proxies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
- H04L63/1441—Countermeasures against malicious traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/18—Network architectures or network communication protocols for network security using different networks or channels, e.g. using out of band channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/30—Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Technology Law (AREA)
- Multimedia (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Computer And Data Communications (AREA)
Abstract
The present invention provides a kind of method of transmitting video data and systems, the present invention passes through when to video data transmission is carried out between two physically-isolated first networks and the second network, the transmission of session information and video is all completed via two unidirectional gateways, when from the second network to first network transmitting video data, need to open two information transfer channels via two unidirectional gateways, session information may only be transmitted from first network to the first information transmission channel of the second network traffic, and session information can be not only transmitted from the second network to the second information transfer channel of first network transmission information, video information can also be transmitted, furthermore, the present invention can also be monitored request of data, the transmission of video data is only carried out to the request of data of request video, the content of transmission can be monitored, prevent to utilize loophole Data illegally are transmitted, the risk that the data for reducing transmission are leaked and attack.
Description
Technical field
The present invention relates to technical field of video transmission, more particularly to a kind of method of transmitting video data and system.
Background technique
The video data volume of video monitoring system is very big, and requirement of real-time is also very high, and relates generally to port dynamic and beat
The problems such as opening, how to carry out safe transmission to the video of exchange becomes urgent problem to be solved.
Existing video exchange transmission method is, by firewall come isolation safe network (i.e. Intranet) and open network
(i.e. outer net), and by setting firewall rule come the user of designated transmission port and accessible video used
IP address where IP address and video resource.Firewall generally while carrying out the forwarding of IP packet, passes through the processing to IP packet, reality
Now to the control of TCP session, the final transmission for controlling video.The technology realization of existing video exchange transmission method is to rely on to prevent
The IP of wall with flues and ports filter function realize permission access and transmission to resource.
But this video exchange transmission method dependent on firewall can only control IP, port, and can not
To checking using the content of data for transmission, there is no consider network security and data safety.Therefore, this
Method can not prevent from divulging a secret, and can not also prevent the attack of virus and Hacker Program.
Summary of the invention
The present invention provides a kind of method of transmitting video data and system, with solve in the related technology using firewall come into
The high problem of the video data disclosure risk of transmission present in the scheme of row video data transmission.
To solve the above-mentioned problems, according to an aspect of the present invention, the invention discloses a kind of video data transmission sides
Method is applied to video-frequency data transmission system, wherein the video-frequency data transmission system includes first network and the second network, institute
Stating includes the first unidirectional gateway and the second unidirectional gateway between first network and second network, and the first unidirectional gateway is used
In from the first network to second transmitted data on network, the second unidirectional gateway is used for from second network to institute
State first network transmission data, wherein be physically isolated between the first network and second network, the first network packet
First server, client are included, second network includes second server, video server.
The described method includes:
First server receives the client to the request of data of second network；
The first server opens the first information transmission channel via the described first unidirectional gateway；
The request of data via the first information transmission channel, is transmitted to second clothes by the first server
Business device；
The first server judges whether the request of data is video data request；
If the first server judges that the request of data is video data request, and receives from second clothes
The expression of business device allows the first response message of the request of data, then the first server is asked according to the video data
It asks, obtains video reception port, the session id of the client, and connect the video reception port of the client, with
And the first mapping relations between the preservation video reception port and the session id；
The second server receives the request of data from the first information transmission channel；
The second server opens the second information transfer channel via the described second unidirectional gateway, and will indicate to allow
First response message of the request of data is transmitted to the first server via second information transfer channel；
The second server judges whether the request of data is video data request；
If the second server judges that the request of data is video data request, the second server is opened
The port RTP, and the video reception port of the client according to the video data request and session id, and save institute
State the second mapping relations between the port RTP and the video reception port, the session id；
The second server is requested according to the video data, comes from the Video service by the RTP interface
The target video data of device；
The second server is inquired described with the RTP interface conjunctionn according to second mapping relations of preservation
Video reception port sends the video reception port and the target video data via second information transfer channel
To the first server；
The first server receives the mesh from the second server by second information transfer channel
Video data and the video reception port are marked, and the target video data is forwarded to by institute according to the video reception port
State client.
According to another aspect of the present invention, the invention also discloses a kind of video-frequency data transmission systems, comprising:
First server and second server, client and video server, wherein the first server, described
Client is in first network, and the second server, the video server are in the second network, wherein first net
It include the first unidirectional gateway and the second unidirectional gateway between network and second network, the first unidirectional gateway is used for from described
To second transmitted data on network, the second unidirectional gateway is used for from second network to first net first network
Network transmits data, wherein is physically isolated between the first network and second network.
The first server, for receiving the client to the request of data of second network；
The first server, for opening the first information transmission channel via the described first unidirectional gateway；
The first server, it is described for the request of data via the first information transmission channel, to be transmitted to
Second server；
The first server, for judging whether the request of data is video data request；
If the first server judges that the request of data is video data request, and receives from second clothes
The expression of business device allows the first response message of the request of data, then the first server is asked according to the video data
It asks, obtains video reception port, the session id of the client, and connect the video reception port of the client, with
And the first mapping relations between the preservation video reception port and the session id；
The second server, for receiving the request of data from the first information transmission channel；
The second server, for opening the second information transfer channel via the described second unidirectional gateway, and by table
Show that the first response message for allowing the request of data via second information transfer channel, is transmitted to the first service
Device；
The second server, for judging whether the request of data is video data request；
If the second server judges that the request of data is video data request, the second server is opened
The port RTP, and the video reception port of the client according to the video data request and session id, and save institute
State the second mapping relations between the port RTP and the video reception port, the session id；
The second server comes from the video by the RTP interface for requesting according to the video data
The target video data of server；
The second server, for second mapping relations according to preservation, inquiry and the RTP interface conjunctionn
The video reception port, by the video reception port and the target video data via second information transfer channel
It is sent to the first server；
The first server, for receiving the institute from the second server by second information transfer channel
Target video data and the video reception port are stated, and is forwarded the target video data according to the video reception port
To the client.
Compared with prior art, the present invention includes the following advantages:
When to video data transmission between two networks, the transmission of request of data and video all passes through the embodiment of the present invention
It is completed, request of data can be monitored by two unidirectional gateways, video counts only are carried out to the request of data of request video
According to transmission, also, transmit video only by being carried out based on the video proxy transmission channel of gateway, can be in transmission
Appearance is monitored, and has prevented illegally to transmit data using loophole, the risk that the data for reducing transmission are leaked and attack.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of video-frequency data transmission system embodiment of the invention；
Fig. 2 is a kind of step flow chart of method of transmitting video data embodiment of the invention；
Fig. 3 is the structural block diagram of another video-frequency data transmission system embodiment of the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
All parts of the country expand the construction of social security video monitoring system at present, and a large amount of views have been built on video private network
Frequency monitoring system.Meanwhile there is a large amount of social plane video monitoring system resources in society, such as telecommunications " global eyes " system and society
The video monitoring system of meeting enterprises and institutions (bank, supermarket, hospital etc.) unit oneself.The considerations of for safety etc., these views
Frequency resource is generally deposited in secure network, cannot directly be accessed from outside, thus cause in resource use inconvenience and
The waste of resource.
In order to which the video data transmission in Intranet to outer net, while being also ensured that the safety of the video data of transmission
Property, the risk for avoiding the video data of Intranet from being leaked shows a kind of video-frequency data transmission system of the invention referring to Fig.1
The schematic diagram of embodiment shows a kind of step flow chart of video data embodiment of the method for the invention, the step referring to Fig. 2
Rapid flow chart is also the work flow diagram of system shown in FIG. 1.
Method shown in Fig. 2 can be applied to video-frequency data transmission system shown in FIG. 1, wherein the video data passes
Defeated system includes first network and the second network, wherein includes first unidirectional between the first network and second network
Gateway (gateway 1 as shown in Figure 1) and the second unidirectional gateway (gateway 2 as shown in Figure 1), the first unidirectional gateway be used for from
To second transmitted data on network, the second unidirectional gateway is used for from second network to described the first network
One transmitted data on network.
Wherein, it is physically isolated between the first network and second network, the first network includes first service
Device (server 1 as shown in Figure 1), second network include second server (server 2).
Optionally, as shown in Figure 1, first server can be streaming cache proxy server 1, second server can be stream
Media proxy server 2.
Optionally, the first network is outer net, and second network is Intranet.
The data of Intranet storage are the higher data of safety, and outer net is generally difficult to obtain the data in Intranet.
As shown in Figure 1, outer net further includes front-end client, for requesting video；Intranet further includes video server, is deposited
Contain interior video, such as the video data of monitoring camera shooting.
And gateway 1 and gateway 2 are then two physical equipments, gateway 1 and gateway 2 are deployed in video resource safety zone
Between (i.e. Intranet) and public domain (i.e. outer net), Intranet and outer net are attached by using two unidirectional gateways.This hair
Bright embodiment utilizes the characteristic of gateway one-way transmission, the data content by gateway can be monitored (such as can be set
One client is connect with a gateway, and the client is so as to obtain the data via gateway, thus to the data of transmission
It is monitored), and only allow through the relevant protocol massages of video.
The embodiment of the present invention can use two streaming cache proxy servers come to by all data of two gateways into
Row interception, control are monitored by the data type of gateway to by the data before gateway, to the number passed through after gateway
According to being monitored, and whether monitoring is related to video by the data of gateway, can guarantee the safety for the data transmitted, with
And reduce a possibility that being attacked using loophole.
Below with reference to Fig. 2, the specific works method of two streaming cache proxy servers of the embodiment of the present invention is carried out
It elaborates, this method can specifically include following steps:
Step 101, first server receives request of data of the client to second network of the first network；
Wherein, it when outer net is wanted to obtain video data from Intranet, trigger data can request on the client, such as Fig. 1
Shown in streaming cache proxy server 1 can receive asking to the data of the data in the second network from front-end client
It asks.
In one example, which can be SIP (Session Initiation Protocol, conversation initial
Agreement) message.
Step 102, the first server opens the first information transmission channel via the described first unidirectional gateway；
Wherein, streaming cache proxy server 1 can open the first information transmission channel via gateway 1, i.e. session channel
1。
Here the specific implementation for opening session channel 1 can be a port for opening gateway 1, and open Streaming Media generation
A receiving port of server 2 is managed, to open the session channel 1 of the two ports composition.For open gateway 1 which
Port, and which port of streaming cache proxy server 2 is opened, gateway 1 can be configured in advance, i.e., gateway 1 is preparatory
The information of port 2 on port 1 and streaming cache proxy server 2 configured with the corresponding gateway 1 of session channel 1, to borrow
Help the configuration information, the session channel 1 that can be constituted with unlatching port 1 and port 2.
Wherein, streaming cache proxy server 1 can automatically open a port of oneself, connect with the port 1 of gateway 1
It connects, the Streaming Media in Intranet is transmitted to by session channel 1 so as to the session information for the media proxy server 1 that flows automatically in the future
Proxy server 2.
Wherein, first information transmission channel may only be from outer net to Intranet transmission session message.
Step 103, the first server is transmitted to institute by the request of data via the first information transmission channel
State second server；
Wherein, which can be transmitted to streaming cache proxy via the session channel 1 by streaming cache proxy server 1
Server 2.
Step 104, the first server judges whether the request of data is video data request；
Wherein, above-mentioned session channel 1 is used for transmission session data, and if outer net requests video data to Intranet, it needs
First server is wanted to make video reception preparation, therefore, whether streaming cache proxy server 1 can also judge the request of data
For video data request.
In one example, it can be determined that whether above-mentioned sip message includes the SDP information for requesting video, if comprising,
Indicate that sip message expression will request video, i.e. the request of data is video data request.
Optionally, if the request of data is not video data request, without executing step 105, it is only necessary to by means of upper
Session channel 1 is stated to conversate transmission of the message outer net to Intranet.
In this way it can be ensured that the method for the embodiment of the present invention may only transmit the data of video format to outer net from outer net,
It is transmitted without the data to extended formatting.
Step 105, it if the first server judges that the request of data is video data request, and receives from institute
The expression for stating second server allows the first response message of the request of data, then the first server is according to the video
Request of data, obtains video reception port, the session id of the client, and connects the video receiver of the client
Mouthful, and save the first mapping relations between the video reception port and the session id；
Wherein, the video data request can carry the video reception port information and session id information of client.
Wherein, above-mentioned first server is requested according to the video data, obtain the client video reception port,
Session id, and the video reception port of the client is connected, and save the video reception port and the session
The first mapping relations between ID optionally can also carry out the initial work of video flowing unpacking, this series of activities can be with
Regard as establishing the work of the first video proxy transmission channel.
Wherein, if streaming cache proxy server 1 judges that the request of data from client is video data request, and
And have received following responses permission message from streaming cache proxy server 2, that is, illustrate that interior net side allows to respond the video
Request of data, Intranet can transmit the video data of request to outer net.Data due to crossing gateway require to carry out package reconciliation
The work of packet, such as video stream data need to make package before by gateway 2, obtain video bag, and video bag is passed through gateway 2
It is sent to streaming cache proxy server 1, streaming cache proxy server 1 needs to make video bag unpacking work, to obtain video
Stream.
So in order to promote unpacking efficiency, efficiency of transmission of the video flowing to Intranet is promoted, in this step, streaming cache proxy clothes
Business device 1 can carry out the initial work of video flowing unpacking, that is, carry out unpacking after receiving above-mentioned first response message
Preparation is ready to be transmitted through gateway 2 any information that the video bag come is unpacked, and needed；
Further, since the video flowing received needs to be transferred to client, therefore, the view of client can also be connected here
Frequency receiving port, and the mapping relations between the video reception port session id corresponding with the request of data for saving client,
To promote video transmission efficiency.
It wherein, include that front-end client is used in video data request if the request of data is video data request
In the port 3 (i.e. above-mentioned receiving port) for receiving video, such as No. 1000 ports and session id information.So in order to asking
The road Qiu Gai video flowing carries out agency's transmission, and video stream proxy server 1 can carry out the initial work of video flowing unpacking, uses
Corresponding video flowing all the way is requested in acting on behalf of the video data；Further, it is also possible to save No. 1000 ports and number of client
According to the mapping relations of the corresponding session id of request, and connect No. 1000 ports of the client.
Wherein, when Video transmission system starts, the method for the embodiment of the present invention can establish outer net described in step 102
The second information transmission of Intranet described in above-mentioned first information transmission channel and following step 107 to Intranet to outer net is logical
Road.
Wherein, first information transmission channel and the transmittable session information of the second information transfer channel, but only second
Information transfer channel can transmit video data.
Step 106, the second server receives the request of data from the first information transmission channel；
Wherein, after step 103, streaming cache proxy server 2 can be asked by the data that session channel 1 receives outer net
It asks, such as sip message.
Step 107, the second server opens the second information transfer channel via the described second unidirectional gateway, and will
Indicate that the first response message for allowing the request of data via second information transfer channel, is transmitted to the first service
Device；
Wherein, in order to make the conversation message of interior net side can be for transmission to outer net side, in this step, streaming cache proxy server
2 can open the channel 2 via gateway 2, wherein the open theory in channel 2 is similar with session channel 1, and in advance in gateway 2
The information of the port 5 on port 4 and streaming cache proxy server 1 on the corresponding gateway 2 of upper collocation channel 2, in advance according to this
Two port informations of configuration, the port 4 of Lai Kaiqi gateway 2, and the port 5 of streaming cache proxy server 1 is opened, to open
Open the channel 2 of the two ports composition.
Wherein, streaming cache proxy server 2 can automatically open a port of oneself, connect with the port 4 of gateway 2
It connects, the streaming cache proxy that the information so as to flow automatically on media proxy server 2 in the future is transmitted in Intranet by channel 2 takes
Business device 1.
Wherein, the second information transfer channel can be from outer net to Intranet transmission session message and video data.
Also, streaming cache proxy server 2 can also will indicate the first response message for allowing the request of data, such as answer
Message perhaps is answered, streaming cache proxy server 1 is sent to by the channel 2.
Step 108, the second server judges whether the request of data is video data request；
In order to be confirmed whether to need to open the video proxy transmission channel from Intranet to outer net transmission video, streaming cache proxy
Server 2 can also judge whether the request of data is video data request.
Optionally, if the request of data is not video data request, the video proxy transmission without opening step 109 is logical
Road, it is only necessary to be conversated the transmission of message by means of above-mentioned channel 2.
In this way it can be ensured that the method for the embodiment of the present invention may only transmit the data of video format to outer net from Intranet,
It is transmitted without the data to extended formatting.
Step 109, if the second server judges that the request of data is video data request, the second service
Device opens the port RTP, and the video reception port of the client according to the video data request and session id, and
Save the second mapping relations between the port RTP and the video reception port, the session id；
Wherein, second server opens the port RTP, and the video of the client according to the video data request
Receiving port and session id, and second saved between the port RTP and the video reception port, the session id is reflected
Relationship is penetrated, this series of activities can be assumed that establish the work of the second video proxy transmission channel.
Wherein, it if streaming cache proxy server 2 judges that the request of data from outer net is video data request, flows
Media proxy server 2 is used for the video proxy transmission channel of proxy video stream to open, i.e. unlatching streaming cache proxy server 2
On the port RTP and port numbers be the port RTCP (optionally) that RTP port numbers add 1, and save the port RTP and institute
The mapping relations between video reception port, the session id are stated, the above process is the mistake for opening video proxy transmission channel
Journey.
If the request of data is video data request, include the reception video in client in video data request
Port, such as No. 1000 ports, then in order to which the road video flowing to client request carries out agency's transmission, video flowing agency
Server 2 can star the port RTP, such as No. 2000 ports, request corresponding video flowing all the way for acting on behalf of the video data,
And save No. 1000 ports in client with here No. 2000 ports and the corresponding session id of video data request between
Mapping relations.
By opening No. 2000 ports on streaming cache proxy server 2, video server can be waited to ask client
No. 2000 ports on the video stream all the way asked to the streaming cache proxy server 2.
It should be noted that Streaming Media refers to the media lattice continuously played in real time on network using streaming technology
Formula, such as audio, video or multimedia file.Stream medium data generally uses Real-time Transport Protocol (real-time transport protocol, Real-time
Transport Protocol) it is transmitted.Real-time Transport Protocol is based on udp protocol and carries out point-to-point transmission, Gu between different networks
It when being transmitted, needs to carry out agency's forwarding to it, network can be penetrated, reaches final purpose address.
When the stream medium data to Real-time Transport Protocol format carries out agency's forwarding, first have to do is exactly streaming media transmission
Required Real-time Transport Protocol port and rtcp protocol (Real-time Transport Control Protocol, real-time Transmission control
Agreement) port starting work, the two ports be two adjacent UDP (User Datagram Protocol, user data
Datagram protocol) port.Wherein, RTP message uses low port, and RTCP message uses high port, and the embodiment of the present invention makes RTP message
It is denoted as the above-mentioned port RTP with low port (transmitting the udp port of RTP message), the high port that RTCP message uses (is transmitted
The udp port of RTCP message) it is denoted as the above-mentioned port RTCP.
Wherein, the port RTCP is that the port numbers of the port RTP add 1 udp port.
Streaming cache proxy server 2 needs to open the port RTP and an end RTCP when acting on behalf of video flowing all the way
Mouthful, to act on behalf of the road video flowing.
Step 110, the second server is requested according to the video data, by the RTP interface from described
The target video data of video server；
Wherein, due to having determined that above-mentioned request of data for video data request, is requested hereinafter with video data
To name above-mentioned request of data, wherein video data request can carry the relevant information of the target video data of request, example
Such as address of the target video data on the video server of Intranet, alternatively, the attribute information etc. of the target video data.This
Outside, video data request can also carry reception video port of the front-end client when receiving the target video data, example
Such as the port that above-mentioned port numbers are 1000.
So streaming cache proxy server 2 can be 2000 by the port numbers opened on streaming cache proxy server 2
The port RTP, by video data request be sent to video server, carry out request target video data, it is then possible to by port
Number the target video data is received for 2000 port RTP.
Step 111, according to second mapping relations of preservation, inquiry and the RTP interface close the second server
The video reception port of connection, the video reception port and the target video data are transmitted via second information
Channel is sent to the first server；
Streaming cache proxy server 2 can inquire and No. 2000 port associations according to the second mapping relations of preservation
No. 1000 this port number information of port and target video data can be made package processing by No. 1000 ports of client, will
Target video data after package is by being transmitted to streaming cache proxy server 1 via the second information transfer channel of gateway 2.
Step 112, the first server is received by second information transfer channel and comes from the second server
The target video data and the video reception port, and according to the video reception port by the target video data
It is forwarded to the client.
Wherein, after streaming cache proxy server 1 receives the target video data of package by the second information transfer channel,
Unpacking processing can be carried out to it, so that obtaining destination port is No. 1000 ports, then according to the first mapping relations of preservation
It is found that No. 1000 ports are associated with some session id, correspond to so as to inquire the session connection according to the session id
Connection between streaming cache proxy server 1 and front-end client, so as to which the target video data after unpacking to be transferred to
No. 1000 ports of front-end client.
It should be noted that all information can be by package before through gateway (i.e. via the information transfer channel of gateway)
(including information type, the information content, destination address etc.), can be depacketized, then according to the number after unpacking after through gateway
According to the content in packet, the information content after unpacking is sent.
By means of the technical solution of the above embodiment of the present invention, the embodiment of the present invention is to the video counts between two networks
When according to transmission, the transmission of request of data and video is all completed via two unidirectional gateways, can be monitored to request of data,
The transmission of video data is only carried out to the request of data of request video, also, the video transmitted only passes through the video based on gateway
Transmission channel is acted on behalf of to carry out, the content of transmission can be monitored, has prevented illegally to transmit data using loophole, is reduced
The risk that the data of transmission are leaked and attack.
In addition, the method for the embodiment of the present invention can be not only monitored during data are transmitted, it can also be in meeting
The monitoring carried out data transmission before talking path, the foundation of video proxy transmission channel, after establishing.
Optionally, before step 102, can also include: according to the method for the embodiment of the present invention
The first server judges whether the request of data is legal；
Wherein, can configure on streaming cache proxy server 1 in advance can transmit the data of which agreement, then not belonging to
In the request of data of these preconfigured agreements be all illegal request, without response.
It is described if then can judge that the request of data is legal with the first server so when executing step 102
First server opens the first information transmission channel via the described first unidirectional gateway；
In addition, can judge the legal situation of the request of data in the first server when executing step 104
Under, the first server just goes to judge whether the request of data is video data request.
In this way, the embodiment of the present invention can established for transmitting from outer net to the first information of Intranet transmission session message
Before channel, the legitimacy of the request of data before transmitting by gateway 1 is judged, preset protocol is only met
Request of data can just be sent to Intranet, and otherwise without response, which is transferred to from outer net via gateway 1 by refusal
Intranet avoids transmitting illegal request so as to check the request of data before transmission, promotes data transmission
Safety.
Optionally, before step 107, according to the method for the embodiment of the present invention further include:
The second server judges whether the request of data is legal；
Wherein, can configure on streaming cache proxy server 2 in advance can receive the data of which agreement, then not belonging to
In the request of data of these preconfigured agreements be all illegal request, without response.
So when executing step 107, then in the case where the second server judges that the request of data is legal,
The second server can just open the second information transfer channel via the described second unidirectional gateway；
In addition, when executing step 108, then in the case where the second server judges that the request of data is legal,
The second server just judges whether the request of data is video data request.
In this way, the embodiment of the present invention can established for transmitting from Intranet to the second information of outer net transmission session message
Before channel, the legitimacy for transmitting obtained request of data by gateway 1 is judged, the data of preset protocol are only met
Request can just respond transmission process, and otherwise without response, refusal passes through the response session instruction of the request of data from Intranet
Outer net is transferred to by gateway 2, so as to be checked before the response data of transmission request of data, is avoided to illegal request
It is responded, promotes data transmission security.
Optionally, the embodiment of above-mentioned two validity checking can also merge, so as to transmit number by gateway 1
Before request, the legitimacy of request of data is checked, and the response message of request of data is being transmitted by gateway 2
Before, can carry out validity checking to request of data in interior net side can be to avoid the data by dual validity checking
Request is tampered by 1 transmission process of session channel, and if interior net side is easy that there are security breaches without validity checking
The problem of, the method for the embodiment of the present invention avoids above-mentioned loophole problem.
Optionally, after step 108, according to the method for the embodiment of the present invention further include:
If it is video data request that the second server, which judges the request of data not, the second server detection
Whether the request of data is the end message for indicating to stop video data transmission；
That is, client is after the target video data for receiving the video server from Intranet, alternatively, because
Other reasons, it is desirable to which the transmission of video of interrupt requests, then front-end client can be by streaming cache proxy server 1, via meeting
Talking path 1 indicates the end message of stopping transmission of video to send.
So streaming cache proxy server 2 is determining that it is not video by judging the request of data received
After request of data, can also detect whether it is above-mentioned end message.
If the request of data is the end message, the second server identifies session according to the end message
ID, and according to second mapping relations, acquisition and the associated port RTP of the session id, and the port RTP is closed, with
And the second mapping relations between the disconnection port RTP and the video reception port, the session id.
Wherein, if the request of data is end message, session id can be carried in the end message, a video is asked
A corresponding session id is sought, then can be according to the second mapping relationship searching of above-mentioned preservation to the end RTP of the correspondence session id
Mouthful, discharge the port RTP and port numbers add one the port RTCP, further, it is also possible to by the session id in the second mapping relations,
Mapping relations between the port RTP and video reception port are deleted.
In this way, whether the request of data that the second server of the embodiment of the present invention is received by judgement is to indicate to stop view
Frequency according to transmission end message, so as to agency transmission multi-path video stream accurately recognize the video to which
Stream stops agency's transmission, and closes its corresponding second video proxy transmission channel, to promote the end RTP of second server side
The service efficiency of mouth, avoids the port RTP occupied, promotes video transmission efficiency.
Optionally, if it is video data request that the second server, which judges the request of data not, and described second takes
Business device, which detects the request of data, is also not the end message for indicating to stop video data transmission, then illustrates the request of data right and wrong
Method request does not need to open the first video proxy transmission channel, to avoid the transmission of invalid data yet.
Optionally, it when executing step 112, can be accomplished by the following way:
The first server receives the mesh from the second server by second information transfer channel
Video data and the video reception port are marked, and whether the data format for detecting the target video data is video format；
Wherein, streaming cache proxy server 1 receives the response of Intranet transmission by the second video proxy transmission channel
After data, the i.e. above-mentioned target video data of package and video reception interface, received data packet can be unpacked, and to unpacking
Obtained target video data detects whether its data format is video format.
If the data format of the target video data is video format, the first server connects according to the video
The target video data is forwarded to the client by receiving end mouth；
Wherein, if the data format of the target video data is video format, illustrate the target video data to close
Method data, thus according to video reception port, i.e. port numbers 1000 find session id in the first mapping relations, can be true
The port numbers that the target video data is sent to above-mentioned client are by which port for needing to be sent to which client surely
1000 receiving port.
If the data format of the target video data is not video format, the first server does not receive expression
The second response message to the video data of request is sent to the client.
Wherein, if the data format of the target video data is not video format, streaming cache proxy server 1 can be with
It will indicate the second response message for not receiving video data, be sent to client.
Even if causing second server that will not meet video lattice in this way, the operation of the second server of interior net side is tampered
Other confidential datas of formula are transferred to the first server of outer net, and still, first server can carry out the data received
Video format judgement, so that the invalid data received will not be transferred to client in the case where receiving invalid data,
Avoid the risk that confidential information is leaked.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
It is corresponding with method provided by the embodiments of the present invention, referring to Fig. 3, show a kind of video data of the present invention
The structural block diagram of Transmission system embodiment, can specifically include:
First server and second server, client and video server, wherein the first server, described
Client is in first network (being shown with circle), and the second server, the video server are in the second network (with circle
Circle is shown), wherein it include the first unidirectional gateway and the second unidirectional gateway, institute between the first network and second network
The first unidirectional gateway is stated for from the first network to second transmitted data on network, the second unidirectional gateway be used for from
Second network to the first network transmit data, wherein between the first network and second network physics every
From.
Optionally, first network is outer net (i.e. public network), and the second network is Intranet (i.e. internal network).
The first server, for receiving the client to the request of data of second network；
The first server, for opening the first information transmission channel via the described first unidirectional gateway；
The first server, it is described for the request of data via the first information transmission channel, to be transmitted to
Second server；
The first server, for judging whether the request of data is video data request；
If the first server judges that the request of data is video data request, and receives from second clothes
The expression of business device allows the first response message of the request of data, then the first server is asked according to the video data
It asks, obtains video reception port, the session id of the client, and connect the video reception port of the client, with
And the first mapping relations between the preservation video reception port and the session id；
The second server, for receiving the request of data from the first information transmission channel；
The second server, for opening the second information transfer channel via the described second unidirectional gateway, and by table
Show that the first response message for allowing the request of data via second information transfer channel, is transmitted to the first service
Device；
The second server, for judging whether the request of data is video data request；
If the second server judges that the request of data is video data request, the second server is opened
The port RTP, and the video reception port of the client according to the video data request and session id, and save institute
State the second mapping relations between the port RTP and the video reception port, the session id；
The second server comes from the video by the RTP interface for requesting according to the video data
The target video data of server；
The second server, for second mapping relations according to preservation, inquiry and the RTP interface conjunctionn
The video reception port, by the video reception port and the target video data via second information transfer channel
It is sent to the first server；
The first server, for receiving the institute from the second server by second information transfer channel
Target video data and the video reception port are stated, and is forwarded the target video data according to the video reception port
To the client.
Optionally, the first server, for judging whether the request of data is legal；
The first server, if opening for judging that the request of data is legal via the described first unidirectional gateway
First information transmission channel；
The first server, if judging whether the request of data is view for judging that the request of data is legal
Frequency request of data.
Optionally, the second server, for judging whether the request of data is legal；
The second server, if opening for judging that the request of data is legal via the described second unidirectional gateway
The second information transfer channel；
The second server, if judging whether the request of data is view for judging that the request of data is legal
Frequency request of data.
Optionally, the second server detects institute if being video data request for judging the request of data not
State whether request of data is the end message for indicating to stop video data transmission；
The second server is known if being the end message for the request of data according to the end message
Other session id, and according to second mapping relations, acquisition and the associated port RTP of the session id, and close the end RTP
Mouthful, and disconnect the second mapping relations between the port RTP and the video reception port, the session id.
Optionally, the first server, for being received by second information transfer channel from second clothes
Be engaged in device the target video data and the video reception port, and detect the target video data data format whether
For video format；
The first server, if the data format for the target video data is video format, according to
The target video data is forwarded to the client by video reception port；
The first server will indicate if the data format for the target video data is not video format
The second response message for not receiving the video data of request is sent to the client.
For system embodiments, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, system or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these
Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices
Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram
The system of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices
In computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates packet
The manufacture of instruction system is included, which realizes in one side of one or more flows of the flowchart and/or block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart
And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Above to a kind of method of transmitting video data provided by the present invention and a kind of video-frequency data transmission system, carry out
It is discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (10)
1. a kind of method of transmitting video data, which is characterized in that be applied to video-frequency data transmission system, wherein the video counts
Include first network and the second network according to Transmission system, includes the first unidirectional network between the first network and second network
Lock and the second unidirectional gateway, the first unidirectional gateway are used for from the first network to second transmitted data on network, institute
The second unidirectional gateway is stated for transmitting data from second network to the first network, wherein the first network and institute
It states and is physically isolated between the second network, the first network includes first server, client, and second network includes second
Server, video server, which comprises
First server receives the client to the request of data of second network；
The first server opens the first information transmission channel via the described first unidirectional gateway；
The request of data via the first information transmission channel, is transmitted to the second service by the first server
Device；
The first server judges whether the request of data is video data request；
If the first server judges that the request of data is video data request, and receives from the second server
Expression allow the first response message of the request of data, then the first server is requested according to the video data, is obtained
Video reception port, the session id of the client are taken, and connects the video reception port of the client, and is saved
The first mapping relations between the video reception port and the session id；
The second server receives the request of data from the first information transmission channel；
The second server opens the second information transfer channel via the described second unidirectional gateway, and will indicate described in permission
First response message of request of data is transmitted to the first server via second information transfer channel；
The second server judges whether the request of data is video data request；
If the second server judges that the request of data is video data request, the second server opens the end RTP
Mouthful, and the video reception port of the client according to the video data request and session id, and save the RTP
The second mapping relations between port and the video reception port, the session id；
The second server is requested according to the video data, by the RTP interface from the video server
Target video data；
Second mapping relations of the second server according to preservation, the video of inquiry and the RTP interface conjunctionn
The video reception port and the target video data are sent to institute via second information transfer channel by receiving port
State first server；
The first server receives the target from the second server by second information transfer channel and regards
Frequency evidence and the video reception port, and the target video data is forwarded to by the visitor according to the video reception port
Family end.
2. the method according to claim 1, wherein
Before the first server opens the first information transmission channel via the described first unidirectional gateway, the method is also wrapped
It includes:
The first server judges whether the request of data is legal；
The first server opens the first information transmission channel via the described first unidirectional gateway, comprising:
If the first server judges that the request of data is legal, the first server is opened unidirectional via described first
The first information transmission channel of gateway；
The first server judges whether the request of data is video data request, comprising:
If the first server judges that the request of data is legal, whether the first server judges the request of data
For video data request.
3. the method according to claim 1, wherein
Before the second server opens the second information transfer channel via the described second unidirectional gateway, the method is also wrapped
It includes:
The second server judges whether the request of data is legal；
The second server opens the second information transfer channel via the described second unidirectional gateway, comprising:
If the second server judges that the request of data is legal, the second server is opened unidirectional via described second
Second information transfer channel of gateway；
The second server judges whether the request of data is video data request, comprising:
If the second server judges that the request of data is legal, whether the second server judges the request of data
For video data request.
4. the method according to claim 1, wherein the second server judge the request of data whether be
After video data request, the method also includes:
If it is video data request that the second server, which judges the request of data not, described in the second server detection
Whether request of data is the end message for indicating to stop video data transmission；
If the request of data is the end message, the second server identifies session id according to the end message,
And according to second mapping relations, acquisition and the associated port RTP of the session id, and the port RTP is closed, and disconnected
Open the second mapping relations between the port RTP and the video reception port, the session id.
5. leading to the method according to claim 1, wherein the first server is transmitted by second information
Road receives the target video data and the video reception port from the second server, and is connect according to the video
The target video data is forwarded to the client by receiving end mouth, comprising:
The first server receives the target from the second server by second information transfer channel and regards
Frequency evidence and the video reception port, and whether the data format for detecting the target video data is video format；
If the data format of the target video data is video format, the first server is according to the video receiver
The target video data is forwarded to the client by mouth；
If the data format of the target video data is not video format, the first server will indicate not receive to ask
Second response message of the video data asked is sent to the client.
6. a kind of video-frequency data transmission system characterized by comprising
First server and second server, client and video server, wherein the first server, the client
End be in first network, the second server, the video server be in the second network, wherein the first network with
It include the first unidirectional gateway and the second unidirectional gateway between second network, the first unidirectional gateway is used for from described first
Network is to second transmitted data on network, and the second unidirectional gateway from second network to the first network for passing
Transmission of data, wherein be physically isolated between the first network and second network；
The first server, for receiving the client to the request of data of second network；
The first server, for opening the first information transmission channel via the described first unidirectional gateway；
The first server, for the request of data via the first information transmission channel, to be transmitted to described second
Server；
The first server, for judging whether the request of data is video data request；
If the first server judges that the request of data is video data request, and receives from the second server
Expression allow the first response message of the request of data, then the first server is requested according to the video data, is obtained
Video reception port, the session id of the client are taken, and connects the video reception port of the client, and is saved
The first mapping relations between the video reception port and the session id；
The second server, for receiving the request of data from the first information transmission channel；
The second server for opening the second information transfer channel via the described second unidirectional gateway, and will indicate to permit
First response message of the perhaps described request of data is transmitted to the first server via second information transfer channel；
The second server, for judging whether the request of data is video data request；
If the second server judges that the request of data is video data request, the second server opens the end RTP
Mouthful, and the video reception port of the client according to the video data request and session id, and save the RTP
The second mapping relations between port and the video reception port, the session id；
The second server comes from the Video service by the RTP interface for requesting according to the video data
The target video data of device；
The second server is inquired described with the RTP interface conjunctionn for second mapping relations according to preservation
Video reception port sends the video reception port and the target video data via second information transfer channel
To the first server；
The first server, for receiving the mesh from the second server by second information transfer channel
Video data and the video reception port are marked, and the target video data is forwarded to by institute according to the video reception port
State client.
7. system according to claim 6, which is characterized in that
The first server, for judging whether the request of data is legal；
The first server, if opening the via the described first unidirectional gateway for judging that the request of data is legal
One information transfer channel；
The first server, if judging whether the request of data is video counts for judging that the request of data is legal
According to request.
8. system according to claim 6, which is characterized in that
The second server, for judging whether the request of data is legal；
The second server, if opening the via the described second unidirectional gateway for judging that the request of data is legal
Two information transfer channels；
The second server, if judging whether the request of data is video counts for judging that the request of data is legal
According to request.
9. system according to claim 6, which is characterized in that
The second server detects the request of data if being video data request for judging the request of data not
It whether is the end message for indicating to stop video data transmission；
The second server identifies meeting according to the end message if being the end message for the request of data
ID is talked about, and according to second mapping relations, acquisition and the associated port RTP of the session id, and closes the port RTP,
And the second mapping relations between the disconnection port RTP and the video reception port, the session id.
10. system according to claim 6, which is characterized in that
The first server, for receiving the mesh from the second server by second information transfer channel
Video data and the video reception port are marked, and whether the data format for detecting the target video data is video format；
The first server, if the data format for the target video data is video format, according to the video
The target video data is forwarded to the client by receiving port；
The first server does not connect expression if the data format for the target video data is not video format
The second response message for receiving the video data of request is sent to the client.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563920.9A CN109587450A (en) | 2018-12-20 | 2018-12-20 | Method of transmitting video data and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563920.9A CN109587450A (en) | 2018-12-20 | 2018-12-20 | Method of transmitting video data and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109587450A true CN109587450A (en) | 2019-04-05 |
Family
ID=65930232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811563920.9A Pending CN109587450A (en) | 2018-12-20 | 2018-12-20 | Method of transmitting video data and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109587450A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083158A (en) * | 2019-12-26 | 2020-04-28 | 深圳市东晟数据有限公司 | Processing method and system for bidirectional message transmission through two unidirectional network gates |
| CN111314670A (en) * | 2020-03-18 | 2020-06-19 | 青岛牛利智能科技有限公司 | Large-scale video convergence system and method under internet heterogeneous network |
| CN112019542A (en) * | 2020-08-28 | 2020-12-01 | 航天科工网络信息发展有限公司 | Cross-network safety e-mail system |
| CN112511884A (en) * | 2019-09-16 | 2021-03-16 | 武汉斗鱼网络科技有限公司 | Mixed flow control method and system of audio and video stream and storage medium |
| CN112511805A (en) * | 2020-11-27 | 2021-03-16 | 成都鼎安华智慧物联网股份有限公司 | Audio and video monitoring system for network cross-domain transmission and communication method thereof |
| CN112565234A (en) * | 2020-11-30 | 2021-03-26 | 武汉烽火众智数字技术有限责任公司 | Cross-network transmission system and method based on WebRTC |
| CN113179242A (en) * | 2021-03-02 | 2021-07-27 | 南方电网深圳数字电网研究院有限公司 | Partition video transmission method, electronic device and storage medium |
| CN113301438A (en) * | 2021-05-29 | 2021-08-24 | 南京云步信息科技有限公司 | Cloud desktop video playing method based on underlying virtualization technology |
| CN113987473A (en) * | 2021-10-09 | 2022-01-28 | 广州博依特智能信息科技有限公司 | Method and system for determining security policy of intelligent edge computing gatekeeper |
| CN114125574A (en) * | 2021-11-19 | 2022-03-01 | 浩云科技股份有限公司 | Unidirectional streaming media transmission method and system |
| CN114697090A (en) * | 2022-03-17 | 2022-07-01 | 北京声智科技有限公司 | System, method, device, storage medium and product for acquiring streaming media |
| CN115632818A (en) * | 2022-09-23 | 2023-01-20 | 山东首瀚信息科技有限公司 | Method for safely isolating one-way reliable transmission between video private network and internal private network |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090135736A1 (en) * | 2007-11-22 | 2009-05-28 | D-Link Corporation | Method of connecting network terminal devices of a private network by using a hand-held electronic device |
| CN102118359A (en) * | 2009-12-30 | 2011-07-06 | 北京大唐高鸿数据网络技术有限公司 | Session initiation protocol (SIP)-based media message transmission method |
| CN105100957A (en) * | 2014-05-09 | 2015-11-25 | 浙江智晓信息科技有限公司 | Method of achieving high-definition video multi-link transmission based on SIP (Session Initiation Protocol) load balancing |
| CN105491180A (en) * | 2015-12-11 | 2016-04-13 | 中国人民解放军国防信息学院 | Method for realizing network communication through back-to-back agent |
| CN107454094A (en) * | 2017-08-23 | 2017-12-08 | 北京明朝万达科技股份有限公司 | A kind of data interactive method and system |
-
2018
- 2018-12-20 CN CN201811563920.9A patent/CN109587450A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090135736A1 (en) * | 2007-11-22 | 2009-05-28 | D-Link Corporation | Method of connecting network terminal devices of a private network by using a hand-held electronic device |
| CN102118359A (en) * | 2009-12-30 | 2011-07-06 | 北京大唐高鸿数据网络技术有限公司 | Session initiation protocol (SIP)-based media message transmission method |
| CN105100957A (en) * | 2014-05-09 | 2015-11-25 | 浙江智晓信息科技有限公司 | Method of achieving high-definition video multi-link transmission based on SIP (Session Initiation Protocol) load balancing |
| CN105491180A (en) * | 2015-12-11 | 2016-04-13 | 中国人民解放军国防信息学院 | Method for realizing network communication through back-to-back agent |
| CN107454094A (en) * | 2017-08-23 | 2017-12-08 | 北京明朝万达科技股份有限公司 | A kind of data interactive method and system |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112511884A (en) * | 2019-09-16 | 2021-03-16 | 武汉斗鱼网络科技有限公司 | Mixed flow control method and system of audio and video stream and storage medium |
| CN112511884B (en) * | 2019-09-16 | 2023-11-03 | 江苏怀业信息技术股份有限公司 | Mixed flow control method, system and storage medium for audio and video flow |
| CN111083158B (en) * | 2019-12-26 | 2022-03-08 | 深圳市东晟数据有限公司 | Processing method and system for bidirectional message transmission through two unidirectional network gates |
| CN111083158A (en) * | 2019-12-26 | 2020-04-28 | 深圳市东晟数据有限公司 | Processing method and system for bidirectional message transmission through two unidirectional network gates |
| CN111314670A (en) * | 2020-03-18 | 2020-06-19 | 青岛牛利智能科技有限公司 | Large-scale video convergence system and method under internet heterogeneous network |
| CN112019542A (en) * | 2020-08-28 | 2020-12-01 | 航天科工网络信息发展有限公司 | Cross-network safety e-mail system |
| CN112019542B (en) * | 2020-08-28 | 2022-09-30 | 航天科工网络信息发展有限公司 | Cross-network safe e-mail system |
| CN112511805B (en) * | 2020-11-27 | 2022-07-08 | 成都鼎安华智慧物联网股份有限公司 | Audio and video monitoring system for network cross-domain transmission and communication method thereof |
| CN112511805A (en) * | 2020-11-27 | 2021-03-16 | 成都鼎安华智慧物联网股份有限公司 | Audio and video monitoring system for network cross-domain transmission and communication method thereof |
| CN112565234A (en) * | 2020-11-30 | 2021-03-26 | 武汉烽火众智数字技术有限责任公司 | Cross-network transmission system and method based on WebRTC |
| CN113179242A (en) * | 2021-03-02 | 2021-07-27 | 南方电网深圳数字电网研究院有限公司 | Partition video transmission method, electronic device and storage medium |
| CN113301438A (en) * | 2021-05-29 | 2021-08-24 | 南京云步信息科技有限公司 | Cloud desktop video playing method based on underlying virtualization technology |
| CN113987473A (en) * | 2021-10-09 | 2022-01-28 | 广州博依特智能信息科技有限公司 | Method and system for determining security policy of intelligent edge computing gatekeeper |
| CN113987473B (en) * | 2021-10-09 | 2023-07-18 | 广州博依特智能信息科技有限公司 | Security policy determination method and system for intelligent edge computing gatekeeper |
| CN114125574A (en) * | 2021-11-19 | 2022-03-01 | 浩云科技股份有限公司 | Unidirectional streaming media transmission method and system |
| CN114697090A (en) * | 2022-03-17 | 2022-07-01 | 北京声智科技有限公司 | System, method, device, storage medium and product for acquiring streaming media |
| CN114697090B (en) * | 2022-03-17 | 2024-01-09 | 北京声智科技有限公司 | Streaming media acquisition system, method, device, storage medium and product |
| CN115632818A (en) * | 2022-09-23 | 2023-01-20 | 山东首瀚信息科技有限公司 | Method for safely isolating one-way reliable transmission between video private network and internal private network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109587450A (en) | Method of transmitting video data and system | |
| US8929360B2 (en) | Systems, methods, media, and means for hiding network topology | |
| US7472411B2 (en) | Method for stateful firewall inspection of ICE messages | |
| JP4806400B2 (en) | Identity processing in trusted domains of IP networks | |
| CN106233704B (en) | Method and apparatus by Relay mode network address translation hole punching voucher are provided | |
| CN102217270B (en) | Using authentication tokens to authorize a firewall to open a pinhole | |
| US8327144B2 (en) | Authentication method, system, and apparatus thereof for inter-domain information communication | |
| EP1885096B1 (en) | Application session border element | |
| US9648006B2 (en) | System and method for communicating with a client application | |
| CN102387135B (en) | User identity filtering method and firewall | |
| CN106161335A (en) | A kind for the treatment of method and apparatus of network packet | |
| JP2007538426A5 (en) | ||
| US8443082B2 (en) | Network communication systems and methods | |
| KR20100130996A (en) | Method and apparatus for remote access to a local network | |
| JP2022538736A (en) | A method, system, and computer-readable medium for establishing a communication session between a public switched telephone network (PSTN) endpoint and a web real-time communication (WEBRTC) endpoint | |
| EP2638496A2 (en) | Method and system for providing service access to a user | |
| WO2019093932A1 (en) | Lawful interception security | |
| CN114390049A (en) | Application data acquisition method and device | |
| WO2016050133A1 (en) | Authentication credential replacement method and apparatus | |
| US11716222B2 (en) | Communications bridge | |
| CA2844428A1 (en) | Real-time encryption of voice and fax over ip | |
| CN106921624B (en) | Session boundary controller and data transmission method | |
| WO2021223097A1 (en) | Authentication and authorization method for data content in network and computer readable storage medium | |
| JP5384445B2 (en) | Session processing system, SIP processing device, policy management device, session processing method, and program | |
| CA3166917A1 (en) | Network connection management |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |
|
| RJ01 | Rejection of invention patent application after publication |