CN108810124A - The remote access control system of a large amount of multimedia terminals under a kind of environment to public network - Google Patents
The remote access control system of a large amount of multimedia terminals under a kind of environment to public network Download PDFInfo
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- CN108810124A CN108810124A CN201810559491.1A CN201810559491A CN108810124A CN 108810124 A CN108810124 A CN 108810124A CN 201810559491 A CN201810559491 A CN 201810559491A CN 108810124 A CN108810124 A CN 108810124A
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- 238000012423 maintenance Methods 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 7
- 230000003993 interaction Effects 0.000 claims abstract description 7
- 230000000977 initiatory effect Effects 0.000 claims abstract description 3
- 230000011664 signaling Effects 0.000 claims abstract description 3
- 238000012544 monitoring process Methods 0.000 claims abstract 2
- 238000012546 transfer Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007429 general method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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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
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/22—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks comprising specially adapted graphical user interfaces [GUI]
-
- 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
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
-
- 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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention belongs to network multimedia terminal technical field, the remote access control system of a large amount of multimedia terminals under specially a kind of environment to public network.The present invention includes：Pass-through proxy server receives the connection of media termination, maintains and record connection status for monitoring particular port；Take orders the operation requests of operating side；Media termination, for responding remote control notification, local boot pty pseudo-terminals, structure shell communication programs etc.；Terminal command line operation interface obtains order and executes output etc. for initiating control connection request.Include additionally the programming framework of structure one network event driving, to network connection, interaction signaling and the transmitting-receiving for controlling data are packaged management.The present invention realizes the remote control of the terminal to largely surfing the Internet after NAT agreements in public network environment, provides a kind of convenience and the mode of multiple functional novel maintenance debugging, the running quality that can be reduced system O&M cost, improve system.
Description
Technical field
The invention belongs to network multimedia terminal technical fields, and in particular to a large amount of multimedias are whole under a kind of environment to public network
The remote access control system at end.
Background technology
Network multimedia terminal asks audio, video data by broadband network to media platform, and providing audio and video to user broadcasts
The service of putting has obtained widespread deployment use, and a large amount of IPTV terminal, OTT terminals enter all trades and professions, to these a large amount of nets
The maintenance and troubleshooting of network multimedia terminal become a time and effort consuming but critically important work, affect total system
Running quality.In maintenance or troubleshooting, general method, maintenance personnel provides manual service or terminal to scene
Report daily record for ex-post analysis, the former is of a high price, and the latter has delay and processing mode is limited.So a kind of can network remote visit
Ask the multimedia terminal that public network is largely disposed, and the O&M mode for providing complete control operating function becomes necessary, is to improving
The failure resolution ability and reduction system O&M cost of system have very great help.
Compared with general Remote Visit and Control scene, the multimedia terminal of public network deployment, usually in Intranet after NAT
Public network is connected, does not have independent public network IP, the multimedia terminal cannot directly be accessed, needs a kind of agency mechanism to do network
Connection, it is also desirable to a kind of to realize the Telnet to multimedia terminal in the Linux login mechanisms under the deputy environment.
Invention content
The purpose of the present invention is to provide a kind of Remote Visit and Control systems for a large amount of multimedia terminals disposed on public network
System reduces system O&M cost and improves the fortune of system so as to carry out network remote maintenance to a large amount of multimedia terminal
Row quality.
General method for network access control, it is network interworking to need accessed terminal and system operation platform, especially
Be want can direct network access arrive accessed terminal, be then based on system carry network entry mode, such as telnet or ssh
Mode.But network multimedia terminal, it is typically deployed in the Intranet at scene, by connecting public network, such network after NAT
Mode, system operation platform directly cannot actively be connected to multimedia terminal.The present invention uses network communication and Linux PTY（It is pseudo-
Terminal）Etc. technologies, a set of remote access control system logged in based on network agent and Linux terminal of structure.
The remote access control system of a large amount of multimedia terminals provided by the invention disposed on public network, is denoted as
ClearRemoteCtl, within the system, there are three comprising modules：
1, ClearRemoteCtl Server pass-through proxies server：A server in public network environment is monitored special
Fixed end mouthful receives the connection of media termination, maintains and record connection status.Take orders the operation requests of operating side, passes through letter
Enable data interaction, it is established that the control interface channel at command operation end and media termination, and long-range control is transmitted by control channel
Data processed；
2, ClearRemoteCtl Stb media terminations.It is connected to pass-through proxy server, for responding remote control notification,
Local boot pty pseudo-terminals build shell communication programs, the standard of the data of transfer network control channel to local pseudo-terminal
Input and standard output；
3, ClearRemoteCtl Interface terminal command lines operation interface.For the control interface that operation maintenance personnel uses, hair
Control connection request is played, the media termination of request to be operated is using the addresses mac as unique mark.After remote control connection is established,
Command Line Interface input system order can be used, obtain order and execute output.
To realize Remote Visit and Control, the detailed process of each module interaction is as follows in system：
1：Media termination actively initiates the connection to pass-through proxy server, sends certification message；
2：Pass-through proxy server receives the connection of media termination, identifies the identity of media termination, records identity information and connection
The correspondence of information；
3：The connection to transfer proxy server is initiated at terminal command line operation interface end, sends certification message, is waited for by transfer
Proxy server identifies and receives；
4：Terminal command line operation interface end sends out request, request remote control to a certain media end to pass-through proxy server
End；
5：Pass-through proxy server searches the connection list of current media terminal, finds target medium terminal, and to target medium
Terminal end sends out the request for needing remote control；
6：After target medium terminal receives request, proceed as follows：
（a）The network connection of new structure one and pass-through proxy server；
（b）A pty pseudo-terminal is opened, and starts a shell process；
（c）It is operating（a）In the network connection built, transfer server is informed, it is ready；
7：After pass-through proxy server receives the message of target medium Terminal Ready, a listening port is created temporarily
（11023 - 12023）, terminal command line operation interface end is then informed into this port；
8：Terminal command line operation interface end, newly initiates a network connection, and company takes the next step facing for pass-through proxy server distribution
When port, build the network channel of what a remote control；And starts an order line input window, receive user's input and show
Show output；
9：The network communication data of pass-through proxy server and target medium terminal-pair remote control, all carries out transfer, specific to grasp
Make as follows：
（a）In pass-through proxy server, any data sent from terminal command line operation interface end are directly given to target matchmaker
The network connection of body terminal；
（b）In target medium terminal, any data sent from the network channel of transfer server directly go to pty pseudo-terminals
Give shell processes；
（c）In target medium terminal, any data read from pty pseudo-terminals, the network for being sent to pass-through proxy server is logical
Road；
（d）In pass-through proxy server, any data sent from target medium terminal are directly given to terminal command line operation
The network connection of interface edge.
To realize network interaction communication between each comprising modules of system etc., the present invention also constructs a network event and drives
Dynamic programming framework reads and writes event, timer wherein encapsulating network connection, and the functions such as cross-platform make for system comprising modules
With specific as follows：
（a）Single thread Event-Driven Framework.Including：One event pond, the event monitored in the event pond occur, each thing of poll
Part calls readjustment processing function when event registration to carry out event handling；
（b）The registration of net reading and writing event is nullified, readjustment processing.Including：It encapsulates socket connections to create, network connection description
The Register Cancel of the read-write event of symbol；
（c）Timer is registered, and is nullified, readjustment processing.Including：Encapsulate timer creation, registration, call back function statement and registration
Deng；
（d）Network sends the management of buffering.Including：It encapsulates tcp and sends cushioning control, upper layer is not required to worry due to first floor system
Caching not enough or network send it is slow, caused by send operation obstruction；
（e）The bottom difference of windows and linux platforms encapsulates.
The present invention is by remote control protocol and acts on behalf of transfer mode and combines, and realizes to largely existing in public network environment
The remote control for the terminal surfed the Internet after NAT agreements provides a kind of convenience and the mode of multiple functional novel maintenance debugging.
The remote access control system of a large amount of multimedia terminals of the present invention, can carry out net to a large amount of multimedia terminal
Network remote maintenance reduces system O&M cost and improves the running quality of system.In an actual project, putting maintenance into practice people
The rate that goes out of member reduces 20% or more, saves a large amount of business travel cost.
Description of the drawings
Fig. 1 is the basic composition of present system.
Fig. 2 is the interaction message schematic diagram between the comprising modules of present system.
Specific implementation mode
The specific implementation of the present invention is further described below.
In pass-through proxy server, basic data structure is to build the collection table fd_ of a pass-through proxy session
map.Each unit item preserves a session information in table：
fd ：With the socket descriptor at terminal command line operation interface end；
peer_fd ：With the socket descriptor of media termination；
peer_mac ：The mac of media termination, identity；
state ：Current remote state of a control；
read_buf ：The caching of remote control data；
The link information of media termination, remote control session information etc. can be all stored in this table by pass-through proxy server.
In media termination, after receiving the request for needing to create remote control, following logic is executed：
Open a pty pseudo-terminal：
pty = getpt()；
t = open(tty_name, O_RDWR | O_NOCTTY)；
And start shell processes：
execv("/bin/sh")。
In pass-through proxy server, media termination, the volume for the network event driving that the comprising modules of operating side three are required for
In journey frame, following operation is encapsulated and realized：
Init :Initialization；
Mainloop:Event-driven major cycle；
regRead:One network of registration reads event and readjustment processing function；
unregRead:It nullifies a network and reads event；
tcpWrite:Tcp is non-, and obstruction is write；
tcpConnect:One tcp connection request of registration and readjustment processing function；
regTimer:One timer of registration and readjustment processing function；
unregTimer:Deregistration timer.
Pass-through proxy server is configured using general server hardware, runs the main journeys of ClearRemoteCtl Server
Sequence binds a public network IP, monitors 10030 signaling ports.The servo of a remote control is run on each media termination
Process keeps the connection with pass-through proxy server.On the workstation computer of O&M controllers, a station command is run
Row operation interface, for initiating remotely to connect control and doing command interaction.
In the platform of 1000 an or more media broadcast terminal, we deploy this set remote access control system,
Including transfer server one, each media broadcast terminal has embedded the servo progress of access control, hardware and is implemented as
This is seldom, but the number for maintenance of going on business reduces very much（Reduce 20% or more）, i.e., of the invention to obtain extraordinary effect.
Claims (3)
1. a kind of remote access control system for a large amount of multimedia terminals disposed on public network, is denoted as ClearRemoteCtl,
It is characterized in that, there are three comprising modules for the system：
Pass-through proxy server：Receive media termination for monitoring particular port for a server in public network environment
Connection, maintain and record connection status；Take orders the operation requests of operating side, is interacted by signaling data, it is established that life
The control interface channel of operating side and media termination is enabled, and remote control data is transmitted by control channel；
Media termination is connected to pass-through proxy server, for responding remote control notification, local boot pty pseudo-terminals, structure
The standard of shell communication programs, data to the local pseudo-terminal of transfer network control channel inputs and standard output；
Terminal command line operation interface, for the control interface used for operation maintenance personnel, for initiating control connection request, request
The media termination to be operated is using the addresses mac as unique mark；After remote control connection is established, Command Line Interface input system is used
Order obtains order and executes output.
2. the remote access control system for a large amount of multimedia terminals disposed on public network according to claim 1, feature
It is, the detailed process of each module interaction is as follows：
（1）Media termination actively initiates the connection to pass-through proxy server, sends certification message；
（2）Pass-through proxy server receives the connection of media termination, identifies the identity of media termination, records identity information and connection
The correspondence of information；
（3）The connection to transfer proxy server is initiated at terminal command line operation interface end, sends certification message, is waited for by
Turn proxy server identification and receives；
（4）Terminal command line operation interface end sends out request, request remote control to a certain media end to pass-through proxy server
End；
（5）Pass-through proxy server searches the connection list of current media terminal, finds target medium terminal, and to target matchmaker
Body terminal end sends out the request for needing remote control；
（6）After target medium terminal receives request, proceed as follows：
（a）The network connection of new structure one and pass-through proxy server；
（b）A pty pseudo-terminal is opened, and starts a shell process；
（c）It is operating（a）In the network connection built, transfer server is informed, it is ready；
（7）：After pass-through proxy server receives the message of target medium Terminal Ready, a listening port is created temporarily
（11023 - 12023）, terminal command line operation interface end is then informed into this port；
（8）Terminal command line operation interface end, newly initiates a network connection, and company takes the next step facing for pass-through proxy server distribution
When port, build the network channel of what a remote control；And starts an order line input window, receive user's input and show
Show output；
（9）The network communication data of pass-through proxy server and target medium terminal-pair remote control, all carries out transfer, specific to grasp
Make as follows：
（a）In pass-through proxy server, any data sent from terminal command line operation interface end are directly given to target medium
The network connection of terminal；
（b）In target medium terminal, any data sent from the network channel of transfer server directly go to pty pseudo-terminals
Give shell processes；
（c）In target medium terminal, any data read from pty pseudo-terminals, the network for being sent to pass-through proxy server is logical
Road；
（d）In pass-through proxy server, any data sent from target medium terminal are directly given to terminal command line operation circle
The network connection at face end.
3. the remote access control system for a large amount of multimedia terminals disposed on public network according to claim 1 or 2, special
Sign is that also there are one the programming frameworks of network event driving for structure, wherein network connection is encapsulated, read-write event, timer,
Cross-platform function is used for system comprising modules, specific as follows：
（a）Single thread Event-Driven Framework, including：One event pond, the event monitored in the event pond occur, each thing of poll
Part calls readjustment processing function when event registration to carry out event handling；
（b）The registration of net reading and writing event is nullified, readjustment processing, including：It encapsulates socket connections to create, network connection description
The Register Cancel of the read-write event of symbol；
（c）Timer is registered, and is nullified, readjustment processing, including：Encapsulate timer creation, registration, call back function statement and registration；
（d）Network sends the management of buffering, including：It encapsulates tcp and sends cushioning control, for preventing due to first floor system caching not
Enough or network sends slow caused upper layer and sends operation obstruction；
（e）The bottom difference of windows and linux platforms encapsulates.
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| CN201810559491.1A CN108810124B (en) | 2018-06-02 | 2018-06-02 | Remote access control system for large number of multimedia terminals in public network environment |
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Cited By (7)
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| CN110266705A (en) * | 2019-06-25 | 2019-09-20 | 珠海格力电器股份有限公司 | Control method and system |
| CN111064794A (en) * | 2019-12-19 | 2020-04-24 | 浙江诺诺网络科技有限公司 | Fault detection method, device, equipment and storage medium of terminal equipment |
| CN111221605A (en) * | 2019-11-18 | 2020-06-02 | 杭州安恒信息技术股份有限公司 | Method and device for controlling Windows host based on RDP (remote desktop protocol) |
| CN114338632A (en) * | 2021-12-24 | 2022-04-12 | 广州通则康威智能科技有限公司 | Remote terminal control method and device, computer equipment and storage medium |
| CN114666628A (en) * | 2022-03-11 | 2022-06-24 | 深圳市宝泽科技有限公司 | Multimedia remote play control method, device and system |
| CN114745169A (en) * | 2022-04-06 | 2022-07-12 | 北京天融信网络安全技术有限公司 | Multi-port access method, device, equipment, medium and product based on NAT mapping |
| CN115334151A (en) * | 2022-08-16 | 2022-11-11 | 钛信(上海)信息科技有限公司 | Cross-regional network remote host access method and system |
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| CN115334151B (en) * | 2022-08-16 | 2024-05-10 | 钛信(上海)信息科技有限公司 | Cross-regional network remote host access method and system |
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