CN110719258B - Server access method and system - Google Patents

Server access method and system Download PDF

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Publication number
CN110719258B
CN110719258B CN201910859773.8A CN201910859773A CN110719258B CN 110719258 B CN110719258 B CN 110719258B CN 201910859773 A CN201910859773 A CN 201910859773A CN 110719258 B CN110719258 B CN 110719258B
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address
target
video network
internet
domain name
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CN110719258A (en
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李飞
龙宇峰
史鑫
王艳辉
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Visionvera Information Technology Co Ltd
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Visionvera Information Technology Co Ltd
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    • 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
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/74—Address processing for routing
    • H04L45/745—Address table lookup; Address filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/10—Mapping addresses of different types
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5076—Update or notification mechanisms, e.g. DynDNS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/618—Details of network addresses
    • H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The embodiment of the invention provides a server access method and a system, wherein the method is applied to a video network, and the video network comprises the following steps: the method comprises the following steps: the video network terminal sends a domain name resolution request to a video network domain name server; the video network domain name server determines a target video network IP address and a target internet IP address corresponding to the target video network domain name according to the corresponding relation of the pre-stored video network domain name, the video network IP address and the internet IP address; the method comprises the steps that a domain name server of the video network determines a target IP address of a webpage server in a connected state at present, and sends a domain name response packet carrying the target IP address to a video network terminal through the video network; and the video network terminal analyzes the domain name response packet to obtain a target IP address, and accesses the webpage server through the target IP address. As can be seen, the domain name resolution server of the video network can realize the resolution of the domain name of the video network.

Description

Server access method and system
Technical Field
The invention relates to the technical field of video networking, in particular to a server access method and a server access system.
Background
The video networking is an important milestone for network development, is a higher-level form of the Internet, is a real-time network, can realize the real-time transmission of full-network high-definition videos which cannot be realized by the existing Internet, and pushes a plurality of Internet applications to high-definition video, and high definition faces each other. Finally, world no-distance is realized, and the distance between people in the world is only the distance of one screen.
When a terminal of the internet of view in the internet of view accesses a web server in the internet of view, a domain name server is required to analyze a domain name of the web server of the internet of view, however, the existing internet domain name server only supports the analysis of the internet domain name and does not support the analysis of the domain name of the internet of view. Therefore, how to resolve the domain name of the video networking so that the video networking terminal in the video networking can access the web server in the video networking is an urgent problem to be solved.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a server access method and a corresponding server access method system that overcome or at least partially solve the above problems.
In order to solve the above problem, an embodiment of the present invention discloses a server access method, which is applied to a video network, where the video network includes: the method comprises the following steps that a video network terminal, a webpage server and a video network domain name server are arranged, the webpage server is provided with a first network card and a second network card, the first network card is used for accessing the video network, the second network card is used for accessing the internet, and the method comprises the following steps:
the video network terminal sends a domain name resolution request to the video network domain name server through the video network, wherein the domain name resolution request carries a target video network domain name of the web server;
the video network domain name server determines a target video network IP address and a target internet IP address corresponding to the target video network domain name according to a pre-stored corresponding relation between the video network domain name and the video network IP address as well as the internet IP address;
the video network domain name server determines a target IP address in a web server in a connected state at present, and sends a domain name response packet carrying the target IP address to the video network terminal through the video network, wherein the target IP address is a target video network IP address or a target internet IP address;
and the video network terminal analyzes the domain name response packet to obtain the target IP address and accesses the webpage server through the target IP address.
Optionally, the determining, by the domain name server of the internet of view, a target IP address currently in a connected state in the web server includes:
the video network domain name server sends a detection packet to a target video network IP address and/or a target internet IP address;
the video network domain name server receives a response packet sent by the web page server;
if the response packet comes from the target internet of view IP address, the internet of view domain name server determines the target internet of view IP address as a target IP address;
and if the response packet comes from the target Internet IP address, the video networking domain name server determines the target Internet IP address as the target IP address.
Optionally, before the terminal of the internet of view accesses the web server through the target IP address, the method further includes:
the video network terminal matches the target IP address with an IP address rule, the IP address rule is obtained from the video network domain name server, and the IP address rule comprises a video network IP address rule and an Internet IP address rule;
if the target IP address is matched with the IP address rule of the video network, determining the target IP address as the IP address of the video network;
and if the target IP address is matched with the Internet IP address rule, determining the target IP address as the Internet IP address.
Optionally, the target IP address is the target internet of view IP address;
the video network terminal accesses the web server through the target IP address, and the method comprises the following steps:
and the video network terminal sends a first access request to the webpage server through the video network, and the destination address in the first access request is the target video network IP.
Optionally, the target IP address is the target internet IP address;
the video network terminal accesses the web server through the target IP address, and the method comprises the following steps:
and the video network terminal sends a second access request to a gateway through the video network so that the gateway forwards the second access request to the webpage server through the internet, and the destination address of the second access request is the target internet IP address.
The embodiment of the invention also provides a server access system, which is applied to the video network, wherein the video network comprises: the system comprises a video network terminal, a webpage server and a video network domain name server, wherein the webpage server is provided with a first network card and a second network card, the first network card is used for accessing the video network, the second network card is used for accessing the internet, and the system comprises:
the video network terminal is used for sending a domain name resolution request to the video network domain name server through the video network, and the domain name resolution request carries a target video network domain name of the web server;
the video network domain name server is used for determining a target video network IP address and a target internet IP address corresponding to the target video network domain name according to the corresponding relation of the video network domain name, the video network IP address and the internet IP address which are stored in advance;
the video network domain name server is also used for determining a target IP address in a current communication state in the web server and sending a domain name response packet carrying the target IP address to the video network terminal through the video network, wherein the target IP address is a target video network IP address or a target Internet IP address;
the video network terminal is further configured to analyze the domain name response packet to obtain the target IP address, and access the web server through the target IP address.
Optionally, the domain name server of the internet of view is specifically configured to:
sending a detection packet to a target video network IP address and/or a target internet IP address;
receiving a response packet sent by the webpage server;
if the response packet comes from the target internet of view IP address, determining the target internet of view IP address as a target IP address;
and if the response packet comes from the target Internet IP address, determining the target Internet IP address as the target IP address.
Optionally, the video networking terminal is further configured to:
before accessing the web server through the target IP address, matching the target IP address with an IP address rule, wherein the IP address rule is acquired from the video network domain name server, and the IP address rule comprises a video network IP address rule and an Internet IP address rule;
if the target IP address is matched with the IP address rule of the video network, determining the target IP address as the IP address of the video network;
and if the target IP address is matched with the Internet IP address rule, determining the target IP address as the Internet IP address.
Optionally, the target IP address is the target internet of view IP address;
the video network terminal is specifically used for:
and sending a first access request to the webpage server through the video network, wherein a destination address in the first access request is the IP of the target video network.
Optionally, the target IP address is the target internet IP address;
the video network terminal is specifically used for:
and sending a second access request to a gateway through the video network so that the gateway forwards the second access request to the webpage server through the internet, wherein the destination address of the second access request is the target internet IP address.
The embodiment of the invention has the following advantages:
according to the technical scheme provided by the embodiment of the invention, the video network domain name resolution server can resolve the video network domain name, resolve the video network domain name into the video network IP address or the Internet IP address, and detect the communication state of the video network IP address and the Internet IP address, so that the video network terminal can access the webpage server through the video network IP address or the Internet IP address.
Drawings
FIG. 1 is a schematic networking diagram of a video network of the present invention;
FIG. 2 is a schematic diagram of a hardware architecture of a node server according to the present invention;
fig. 3 is a schematic diagram of a hardware structure of an access switch of the present invention;
fig. 4 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present invention;
FIG. 5 is a flow chart of the steps of a server access method of the present invention;
fig. 6 is a flowchart of the step of S530;
fig. 7 is a schematic connection diagram of a video network terminal, a video network domain name server and a web server according to the present invention.
Fig. 8 is a schematic structural diagram of a server access system of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The video networking is an important milestone for network development, is a real-time network, can realize high-definition video real-time transmission, and pushes a plurality of internet applications to high-definition video, and high-definition faces each other.
The video networking adopts a real-time high-definition video exchange technology, can integrate required services such as dozens of services of video, voice, pictures, characters, communication, data and the like on a system platform on a network platform, such as high-definition video conference, video monitoring, intelligent monitoring analysis, emergency command, digital broadcast television, delayed television, network teaching, live broadcast, VOD on demand, television mail, Personal Video Recorder (PVR), intranet (self-office) channels, intelligent video broadcast control, information distribution and the like, and realizes high-definition quality video broadcast through a television or a computer.
To better understand the embodiments of the present invention, the following description refers to the internet of view:
some of the technologies applied in the video networking are as follows:
network Technology (Network Technology)
Network technology innovation in video networking has improved over traditional Ethernet (Ethernet) to face the potentially enormous video traffic on the network. Unlike pure network Packet Switching (Packet Switching) or network Circuit Switching (Circuit Switching), the Packet Switching is adopted by the technology of the video networking to meet the Streaming requirement. The video networking technology has the advantages of flexibility, simplicity and low price of packet switching, and simultaneously has the quality and safety guarantee of circuit switching, thereby realizing the seamless connection of the whole network switching type virtual circuit and the data format.
Switching Technology (Switching Technology)
The video network adopts two advantages of asynchronism and packet switching of the Ethernet, eliminates the defects of the Ethernet on the premise of full compatibility, has end-to-end seamless connection of the whole network, is directly communicated with a user terminal, and directly bears an IP data packet. The user data does not require any format conversion across the entire network. The video networking is a higher-level form of the Ethernet, is a real-time exchange platform, can realize the real-time transmission of the whole-network large-scale high-definition video which cannot be realized by the existing Internet, and pushes a plurality of network video applications to high-definition and unification.
Server Technology (Server Technology)
The server technology on the video networking and unified video platform is different from the traditional server, the streaming media transmission of the video networking and unified video platform is established on the basis of connection orientation, the data processing capacity of the video networking and unified video platform is independent of flow and communication time, and a single network layer can contain signaling and data transmission. For voice and video services, the complexity of video networking and unified video platform streaming media processing is much simpler than that of data processing, and the efficiency is greatly improved by more than one hundred times compared with that of a traditional server.
Storage Technology (Storage Technology)
The super-high speed storage technology of the unified video platform adopts the most advanced real-time operating system in order to adapt to the media content with super-large capacity and super-large flow, the program information in the server instruction is mapped to the specific hard disk space, the media content is not passed through the server any more, and is directly sent to the user terminal instantly, and the general waiting time of the user is less than 0.2 second. The optimized sector distribution greatly reduces the mechanical motion of the magnetic head track seeking of the hard disk, the resource consumption only accounts for 20% of that of the IP internet of the same grade, but concurrent flow which is 3 times larger than that of the traditional hard disk array is generated, and the comprehensive efficiency is improved by more than 10 times.
Network Security Technology (Network Security Technology)
The structural design of the video network completely eliminates the network security problem troubling the internet structurally by the modes of independent service permission control each time, complete isolation of equipment and user data and the like, generally does not need antivirus programs and firewalls, avoids the attack of hackers and viruses, and provides a structural carefree security network for users.
Service Innovation Technology (Service Innovation Technology)
The unified video platform integrates services and transmission, and is not only automatically connected once whether a single user, a private network user or a network aggregate. The user terminal, the set-top box or the PC are directly connected to the unified video platform to obtain various multimedia video services in various forms. The unified video platform adopts a menu type configuration table mode to replace the traditional complex application programming, can realize complex application by using very few codes, and realizes infinite new service innovation.
Networking of the video network is as follows:
the video network is a centralized control network structure, and the network can be a tree network, a star network, a ring network and the like, but on the basis of the centralized control node, the whole network is controlled by the centralized control node in the network.
As shown in fig. 1, the video network is divided into an access network and a metropolitan network.
The devices of the access network part can be mainly classified into 3 types: node server, access switch, terminal (including various set-top boxes, coding boards, memories, etc.). The node server is connected to an access switch, which may be connected to a plurality of terminals and may be connected to an ethernet network.
The node server is a node which plays a centralized control function in the access network and can control the access switch and the terminal. The node server can be directly connected with the access switch or directly connected with the terminal.
Similarly, devices of the metropolitan network portion may also be classified into 3 types: a metropolitan area server, a node switch and a node server. The metro server is connected to a node switch, which may be connected to a plurality of node servers.
The node server is a node server of the access network part, namely the node server belongs to both the access network part and the metropolitan area network part.
The metropolitan area server is a node which plays a centralized control function in the metropolitan area network and can control a node switch and a node server. The metropolitan area server can be directly connected with the node switch or directly connected with the node server.
Therefore, the whole video network is a network structure with layered centralized control, and the network controlled by the node server and the metropolitan area server can be in various structures such as tree, star and ring.
The access network part can form a unified video platform (the part in the dotted circle), and a plurality of unified video platforms can form a video network; each unified video platform may be interconnected via metropolitan area and wide area video networking.
Video networking device classification
1.1 devices in the video network of the embodiment of the present invention can be mainly classified into 3 types: servers, switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.
1.2 wherein the devices of the access network part can be mainly classified into 3 types: node servers, access switches (including ethernet gateways), video networking terminals (including various set-top boxes, code boards, memories, etc.).
The specific hardware structure of each access network device is as follows:
a node server:
as shown in fig. 2, the system mainly includes a network interface module 201, a switching engine module 202, a CPU module 203, and a disk array module 204;
the network interface module 201, the CPU module 203, and the disk array module 204 all enter the switching engine module 202; the switching engine module 202 performs an operation of looking up the address table 205 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a queue of the corresponding packet buffer 206 based on the packet's steering information; if the queue of the packet buffer 206 is nearly full, it is discarded; the switching engine module 202 polls all packet buffer queues for forwarding if the following conditions are met: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero. The disk array module 204 mainly implements control over the hard disk, including initialization, read-write, and other operations on the hard disk; the CPU module 203 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 205 (including a downlink protocol packet address table, an uplink protocol packet address table, and a data packet address table), and configuring the disk array module 204.
The access switch:
as shown in fig. 3, the network interface module mainly includes a network interface module (a downlink network interface module 301 and an uplink network interface module 302), a switching engine module 303 and a CPU module 304;
wherein, the packet (uplink data) coming from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 303, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 302 enters the switching engine module 303; the data packet coming from the CPU module 204 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up the address table 306 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 303 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 307 in association with the stream-id; if the queue of the packet buffer 307 is nearly full, it is discarded; if the packet entering the switching engine module 303 is not from the downlink network interface to the uplink network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the guiding information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.
The switching engine module 303 polls all packet buffer queues, which in this embodiment of the present invention is divided into two cases:
if the queue is from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queued packet counter is greater than zero; 3) obtaining a token generated by a code rate control module;
if the queue is not from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero.
The rate control module 208 is configured by the CPU module 204, and generates tokens for packet buffer queues from all downstream network interfaces to upstream network interfaces at programmable intervals to control the rate of upstream forwarding.
The CPU module 304 is mainly responsible for protocol processing with the node server, configuration of the address table 306, and configuration of the code rate control module 308.
Ethernet protocol conversion gateway：
As shown in fig. 4, the apparatus mainly includes a network interface module (a downlink network interface module 401 and an uplink network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.
Wherein, the data packet coming from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MAC DA, the ethernet MAC SA, the ethernet length or frame type, the video network destination address DA, the video network source address SA, the video network packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC deletion module 410 subtracts MAC DA, MAC SA, length or frame type (2byte) and enters the corresponding receiving buffer, otherwise, discards it;
the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, obtains the ethernet MAC DA of the corresponding terminal according to the destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MAC SA of the ethernet protocol gateway, and the ethernet length or frame type, and sends the packet.
The other modules in the ethernet protocol gateway function similarly to the access switch.
A terminal:
the system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set-top box mainly comprises a network interface module, a video and audio coding and decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.
1.3 devices of the metropolitan area network part can be mainly classified into 2 types: node server, node exchanger, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.
2. Video networking packet definition
2.1 Access network packet definition
The data packet of the access network mainly comprises the following parts: destination Address (DA), Source Address (SA), reserved bytes, payload (pdu), CRC.
As shown in the following table, the data packet of the access network mainly includes the following parts:
DA SA Reserved Payload CRC
wherein:
the Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), there are 256 possibilities at most, the second byte to the sixth byte are metropolitan area network addresses, and the seventh byte and the eighth byte are access network addresses;
the Source Address (SA) is also composed of 8 bytes (byte), defined as the same as the Destination Address (DA);
the reserved byte consists of 2 bytes;
the payload part has different lengths according to different types of datagrams, and is 64 bytes if the datagram is various types of protocol packets, and is 32+1024 or 1056 bytes if the datagram is a unicast packet, of course, the length is not limited to the above 2 types;
the CRC consists of 4 bytes and is calculated in accordance with the standard ethernet CRC algorithm.
2.2 metropolitan area network packet definition
The topology of a metropolitan area network is a graph and there may be 2, or even more than 2, connections between two devices, i.e., there may be more than 2 connections between a node switch and a node server, a node switch and a node switch, and a node switch and a node server. However, the metro network address of the metro network device is unique, and in order to accurately describe the connection relationship between the metro network devices, parameters are introduced in the embodiment of the present invention: a label to uniquely describe a metropolitan area network device.
In this specification, the definition of the Label is similar to that of the Label of MPLS (Multi-Protocol Label Switch), and assuming that there are two connections between the device a and the device B, there are 2 labels for the packet from the device a to the device B, and 2 labels for the packet from the device B to the device a. The label is classified into an incoming label and an outgoing label, and assuming that the label (incoming label) of the packet entering the device a is 0x0000, the label (outgoing label) of the packet leaving the device a may become 0x 0001. The network access process of the metro network is a network access process under centralized control, that is, address allocation and label allocation of the metro network are both dominated by the metro server, and the node switch and the node server are both passively executed, which is different from label allocation of MPLS, and label allocation of MPLS is a result of mutual negotiation between the switch and the server.
As shown in the following table, the data packet of the metro network mainly includes the following parts:
DA SA Reserved label (R) Payload CRC
Namely Destination Address (DA), Source Address (SA), Reserved byte (Reserved), tag, payload (pdu), CRC. The format of the tag may be defined by reference to the following: the tag is 32 bits with the upper 16 bits reserved and only the lower 16 bits used, and its position is between the reserved bytes and payload of the packet.
Based on the above-mentioned characteristics of the video network, one of the core concepts of the embodiments of the present invention is presented.
Referring to fig. 5, a flow chart of steps of an embodiment of a server access method of the present invention is shown, the method is applied to a video network, and the video network comprises: the method comprises a video network terminal, a webpage server and a video network domain name server, wherein the webpage server is provided with a first network card and a second network card, the first network card is used for accessing the video network, and the second network card is used for accessing the internet, and the method specifically comprises the following steps:
s510, the terminal of the video network sends a domain name resolution request to the domain name server of the video network through the video network.
The domain name resolution request carries a target video network domain name of the web server.
When the video network terminal wants to access a web server, namely a web server, the video network terminal sends a domain name resolution request carrying a target video network domain name to a video network domain name server through the video network, so that the video network domain name server resolves the target video network domain name in the subsequent steps.
It should be noted that the concept of a view domain name is equivalent to an internet domain name, except that the view domain name ends with a v. Thus, the target video networking domain name also ends in.
S520, the video network domain name server determines a target video network IP address and a target internet IP address corresponding to the target video network domain name according to the corresponding relation between the video network domain name and the video network IP address and the internet IP address stored in advance.
After receiving the domain name resolution request, the video networking domain name server resolves the domain name resolution request to obtain the target video networking domain name. The video network domain name server can adopt rubydns as a basic service program for domain name resolution.
In addition, the corresponding relation between the domain name of the video network and the IP address of the Internet is stored in the domain name server of the video network in advance. That is, each view network domain name corresponds to a view network IP address and an internet IP address.
For example, the internet of view IP address corresponding to the internet of view domain name new.v is: 10.0.0.10, respectively; the internet IP address corresponding to the video network domain name new.v is: 192.168.9.187.
the internet of view IP address corresponding to the internet of view domain name oa.v is: 10.0.0.20, respectively; the internet IP address corresponding to the video network domain name oa.v is: 192.168.9.200.
therefore, after the domain name server of the video network obtains the target domain name of the video network, the domain name server of the video network can determine the target domain name of the video network and the target internet IP address corresponding to the domain name of the target video network according to the corresponding relation of the domain name of the video network, the IP address of the video network and the IP address of the internet which are stored in advance. Assuming the target internet of view domain name is new.v, then the target internet of view IP is 10.0.0.10 and the target internet IP is: 192.168.9.187.
s530, the video network domain name server determines a target IP address in a web page server in a connected state at present, and sends a domain name response packet carrying the target IP address to the video network terminal through the video network, wherein the target IP address is a target video network IP or a target internet IP address.
After the domain name server of the video network obtains the target video network IP address and the target Internet IP address corresponding to the target video network domain name, the domain name server of the video network can judge which IP address of the two IP addresses of the target video network IP address and the target Internet IP address is in a connected state, namely, the target IP address in the connected state is determined. And the domain name response packet carrying the target IP address can be sent to the video network terminal through the video network, so that in the subsequent steps, the video network terminal can access the web server through the target IP address.
In one embodiment, the determining, by the domain name server of the internet of view, the target IP address currently in the connected state in the web server may include the following four steps, as shown in fig. 6, which are S531 to S534 respectively:
s531, the domain name server of the video network sends a detection packet to the IP address of the target video network and/or the IP address of the target Internet.
When determining the current target IP address in a connected state, the domain name server of the video network can send a detection packet, namely the IP address of the pin target video network, to the target video network IP. And, after sending the probe packet, waits for the reply of the target video network IP. Similarly, the video network domain name server can also send a detection packet to the target internet IP address, namely the pin target internet IP address. And, after sending the probe packet, waits for the reply of the target video network IP.
It should be noted that, in practical applications, the domain name server of the video network may preferentially determine whether the video network of the web server is connected, and at this time, the domain name server of the video network may preferentially send a detection packet to the target video network IP. Similarly, the video network domain name server can preferentially judge whether the internet of the web page server is connected or not, and at the moment, the video network domain name server can preferentially send a detection packet to the IP address of the target internet.
S532, the video network domain name server receives the response packet sent by the web page server.
After the video network domain name server sends the detection packet, a response packet fed back by the web server is received. It will be appreciated that in actual practice, the response packet may come from the target internet IP address as well as the target internet IP address.
For example, if the target internet of view domain name is new.v., then the target internet of view IP is 10.0.0.10, the internet of view domain name server sends a probe packet to 10.0.0.10, and if the internet of view of the web server is connected, the internet of view domain name server can receive a response packet from 10.0.0.10.
S533, if the response packet is from the target internet of view IP address, the internet of view domain name server determines the target internet of view IP address as the target IP address.
If the response packet comes from the target internet of view IP address, the target internet of view IP address is in a connected state, so that the internet of view domain name server can determine the target internet of view IP address as the target IP address, and the internet of view domain name server can send the domain name response packet carrying the target internet of view IP address to the internet of view terminal.
And S534, if the response packet is from the target Internet IP address, the video network domain name server determines the target Internet IP address as the target IP address.
If the response packet comes from the target internet IP address, the target internet IP address is in a connected state, so that the video network domain name server can determine the target internet IP address as the target IP address, and the video network domain name server can send the domain name response packet carrying the target internet IP address to the video network terminal.
And S540, the video network terminal analyzes the domain name response packet to obtain a target IP address, and accesses the webpage server through the target IP address.
After the terminal of the video network obtains the domain name response packet, the domain name response packet can be analyzed to obtain the target IP address. Since the target IP address can be a target internet of view IP address, it can also be a target internet IP address.
And when the target IP address is the target internet of view IP address, the internet of view terminal can access the webpage server through the target internet of view IP address. And when the target IP address is the target Internet IP address, the video networking terminal can access the webpage server through the target Internet IP address.
As an implementation manner of the embodiment of the present invention, before the terminal of the video network accesses the web server through the target IP address, the server access method further includes the following steps, which are respectively a1 to a 3:
a1, matching the target IP address with the IP address rule by the video network terminal, wherein the IP address rule is obtained from the video network domain name server, and the IP address rule comprises the video network IP address rule and the Internet IP address rule.
a2, if the target IP address matches the video Internet IP address rule, determining the target IP address as the video Internet IP address.
a3, if the target IP address matches the Internet IP address rule, determining the target IP address as the Internet IP address.
After the video network terminal obtains the target IP address, in order to judge whether the target IP address is the target video network IP address or the target Internet IP address. The target IP address may be matched to the IP address rule, and if the target IP address matches the internet of view IP address rule, the target IP address is the target internet of view IP address. Likewise, if the target IP address matches the internet IP address rule, then the target IP address is the target internet IP address.
The video network IP address rule and the internet IP address rule can be set according to actual conditions. For example, the internet of view IP address rule may be: beginning with "10", the internet IP address rule may be: beginning with "192. When the target IP address begins with "10", the target IP address may be determined to be: a target video networking IP address. When the target IP address begins with "192", the target IP address may be determined to be: a target internet IP address.
As can be seen from the above description, the target IP address may be a target internet-of-view IP address, and may also be a target internet IP address. The way in which the video network terminal accesses the web server is different for different types of target IP addresses.
In one embodiment, the target IP address is a target internet of view IP address;
at this time, the accessing of the web server by the terminal of the video network through the target IP address may include:
the terminal of the video network sends a first access request to the webpage server through the video network, and a destination address in the first access request is a target video network IP.
In this embodiment, when the target IP address is a target internet-of-view IP address, it indicates that the internet-of-view of the web server is in a connected state, at this time, the internet-of-view terminal may send an access request to the web server through the internet-of-view, and for clarity of the description of the scheme, the access request may be referred to as a first access request. And after receiving the first access request, the webpage server responds to the first access request and sends a response result to the video network terminal through the video network.
In another embodiment, the target IP address is a target internet IP address;
at this time, the accessing of the web server by the terminal of the video network through the target IP address may include:
and the video network terminal sends a second access request to the gateway through the video network so that the gateway forwards the second access request to the webpage server through the internet, and the destination address of the second access request is the target internet IP address.
In this embodiment, the terminal of the video network may send an access request to the gateway through the video network, and for clarity of description, the access request may be referred to as a second access request. And after receiving the second access request, the gateway forwards the second access request to the webpage server through the Internet. And after receiving the response result, the gateway sends the response result to the video network terminal through the video network.
According to the technical scheme provided by the embodiment of the invention, the video network domain name resolution server can resolve the video network domain name, resolve the video network domain name into the video network IP address or the Internet IP address, and detect the communication state of the video network IP address and the Internet IP address, so that the video network terminal can access the webpage server through the video network IP address or the Internet IP address.
For clarity of description of the scheme, the server access method will be explained in detail with reference to specific examples. As shown in fig. 7.
The domain name of the web server is new.v, and the IP address of the video network is as follows: 10.0.0.10. the internet IP address is: 192.168.9.187. the video network domain name resolution server is as follows: the video network terminal is connected with the vlas through the video network; the vlas is connected with the web server through the video network, and the gateway is as follows: one end of the vnat is connected with the video network, and the other end of the vnat is connected with the internet.
In particular, the method comprises the following steps of,
firstly, a terminal of the video network can send a domain name resolution request to the vlas through the video network, wherein the domain name resolution request carries new.v.
Step two, after receiving the domain name resolution request, vlas searches for the internet of things IP address corresponding to new.v as: 10.0.0.10, the Internet IP address is: 192.168.9.187.
third, vlas may wait 10.0.0.10 for a response via a video networking probe 10.0.0.10; if 10.0.0.10 responds to vlas, it is indicated that 10.0.0.10 channel is connected, vlas constructs domain name response packet containing 10.0.0.10, and sends it to the terminal of the internet of vision network through the internet of vision network, the terminal of the internet of vision network receives the domain name response packet of new.v, accesses the web server through the internet of vision network, and after the web server responds, sends the response data to the terminal of the internet of vision network through the internet of vision network.
Fourthly, if the vlas does not receive the response of 10.0.0.10 in the third step, it is indicated that the 10.0.0.10 path is not connected, the vlas constructs a domain name response packet containing 192.168.9.187 and sends the domain name response packet to the video network terminal through the video network, the video network terminal receives the domain name response packet of news.v, it is determined that the domain name response packet carries internet IP, the video network terminal sends a request packet for accessing news.v to vnat through the video network, the vnat forwards the web server through the internet, the web server returns a response data original path after responding, that is, the response data is sent to the vnat through the internet, and the vnat sends the response data to the video network terminal through the video network.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
The embodiment of the invention also provides a server access system, which is applied to the video network, wherein the video network comprises: the system comprises a video network terminal, a webpage server and a video network domain name server, wherein the webpage server is provided with a first network card and a second network card, the first network card is used for accessing the video network, the second network card is used for accessing the internet, and as shown in fig. 8, the system comprises:
the video network terminal 810 is configured to send a domain name resolution request to the video network domain name server through a video network, where the domain name resolution request carries a target video network domain name of the web server;
the video network domain name server 820 is configured to determine a target video network IP address and a target internet IP address corresponding to the target video network domain name according to a pre-stored correspondence relationship between the video network domain name and the video network IP address and the internet IP address;
the domain name server 820 of the video network is further configured to determine a target IP address in a connected state currently in the web server, and send a domain name response packet carrying the target IP address to the video network terminal through the video network, where the target IP address is a target video network IP address or a target internet IP address;
the video network terminal 810 is further configured to parse the domain name response packet to obtain the target IP address, and access the web server 830 through the target IP address.
Optionally, the domain name server of the internet of view is specifically configured to:
sending a detection packet to a target video network IP address and/or a target internet IP address;
receiving a response packet sent by the webpage server;
if the response packet comes from the target internet of view IP address, determining the target internet of view IP address as a target IP address;
and if the response packet comes from the target Internet IP address, determining the target Internet IP address as the target IP address.
Optionally, the video networking terminal is further configured to:
before accessing the web server through the target IP address, matching the target IP address with an IP address rule, wherein the IP address rule is acquired from the video network domain name server, and the IP address rule comprises a video network IP address rule and an Internet IP address rule;
if the target IP address is matched with the IP address rule of the video network, determining the target IP address as the IP address of the video network;
and if the target IP address is matched with the Internet IP address rule, determining the target IP address as the Internet IP address.
Optionally, the target IP address is the target internet of view IP address;
the video network terminal is specifically used for:
and sending a first access request to the webpage server through the video network, wherein a destination address in the first access request is the IP of the target video network.
Optionally, the target IP address is the target internet IP address;
the video network terminal is specifically used for:
and sending a second access request to a gateway through the video network so that the gateway forwards the second access request to the webpage server through the internet, wherein the destination address of the second access request is the target internet IP address.
According to the technical scheme provided by the embodiment of the invention, the video network domain name resolution server can resolve the video network domain name, resolve the video network domain name into the video network IP address or the Internet IP address, and detect the communication state of the video network IP address and the Internet IP address, so that the video network terminal can access the webpage server through the video network IP address or the Internet IP address.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The server access method and the server access system provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (8)

1. A server access method is applied to a video network, and the video network comprises the following steps: the method comprises the following steps that a video network terminal, a webpage server and a video network domain name server are arranged, the webpage server is provided with a first network card and a second network card, the first network card is used for accessing the video network, the second network card is used for accessing the internet, and the method comprises the following steps:
the video network terminal sends a domain name resolution request to the video network domain name server through the video network, wherein the domain name resolution request carries a target video network domain name of the web server;
the video network domain name server determines a target video network IP address and a target internet IP address corresponding to the target video network domain name according to a pre-stored corresponding relation between the video network domain name and the video network IP address as well as the internet IP address;
the video network domain name server sends a detection packet to a target video network IP address and/or a target internet IP address;
the video network domain name server receives a response packet sent by the web page server;
if the response packet comes from the target internet of view IP address, the internet of view domain name server determines the target internet of view IP address as a target IP address;
if the response packet comes from the target internet IP address, the video networking domain name server determines the target internet IP address as a target IP address;
the video network domain name server sends a domain name response packet carrying the target IP address to the video network terminal through the video network, wherein the target IP address is a target video network IP address or a target Internet IP address;
and the video network terminal analyzes the domain name response packet to obtain the target IP address and accesses the webpage server through the target IP address.
2. The method of claim 1, wherein before the terminal of the video network accesses the web server through the target IP address, the method further comprises:
the video network terminal matches the target IP address with an IP address rule, the IP address rule is obtained from the video network domain name server, and the IP address rule comprises a video network IP address rule and an Internet IP address rule;
if the target IP address is matched with the IP address rule of the video network, determining the target IP address as the IP address of the video network;
and if the target IP address is matched with the Internet IP address rule, determining the target IP address as the Internet IP address.
3. The method of claim 2, wherein the target IP address is the target internet of view IP address;
the video network terminal accesses the web server through the target IP address, and the method comprises the following steps:
and the video network terminal sends a first access request to the webpage server through the video network, and the destination address in the first access request is the target video network IP.
4. The method of claim 2, wherein the target IP address is the target internet IP address;
the video network terminal accesses the web server through the target IP address, and the method comprises the following steps:
and the video network terminal sends a second access request to a gateway through the video network so that the gateway forwards the second access request to the webpage server through the internet, and the destination address of the second access request is the target internet IP address.
5. A server access system, wherein the system is applied in a video network, the video network comprises: the system comprises a video network terminal, a webpage server and a video network domain name server, wherein the webpage server is provided with a first network card and a second network card, the first network card is used for accessing the video network, the second network card is used for accessing the internet, and the system comprises:
the video network terminal is used for sending a domain name resolution request to the video network domain name server through the video network, and the domain name resolution request carries a target video network domain name of the web server;
the video network domain name server is used for determining a target video network IP address and a target internet IP address corresponding to the target video network domain name according to the corresponding relation of the video network domain name, the video network IP address and the internet IP address which are stored in advance;
the video network domain name server is also used for determining a target IP address in a current communication state in the web server and sending a domain name response packet carrying the target IP address to the video network terminal through the video network, wherein the target IP address is a target video network IP address or a target Internet IP address; the video networking domain name server is specifically configured to:
sending a detection packet to a target video network IP address and/or a target internet IP address;
receiving a response packet sent by the webpage server;
if the response packet comes from the target internet of view IP address, determining the target internet of view IP address as a target IP address;
if the response packet comes from the target Internet IP address, determining the target Internet IP address as a target IP address;
the video network terminal is further configured to analyze the domain name response packet to obtain the target IP address, and access the web server through the target IP address.
6. The system of claim 5, wherein the video networking terminal is further configured to:
before accessing the web server through the target IP address, matching the target IP address with an IP address rule, wherein the IP address rule is acquired from the video network domain name server, and the IP address rule comprises a video network IP address rule and an Internet IP address rule;
if the target IP address is matched with the IP address rule of the video network, determining the target IP address as the IP address of the video network;
and if the target IP address is matched with the Internet IP address rule, determining the target IP address as the Internet IP address.
7. The system of claim 6, wherein the target IP address is the target Internet of view IP address;
the video network terminal is specifically used for:
and sending a first access request to the webpage server through the video network, wherein a destination address in the first access request is the IP of the target video network.
8. The system of claim 6, wherein the target IP address is the target internet IP address;
the video network terminal is specifically used for:
and sending a second access request to a gateway through the video network so that the gateway forwards the second access request to the webpage server through the internet, wherein the destination address of the second access request is the target internet IP address.
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Patentee after: VISIONVERA INFORMATION TECHNOLOGY Co.,Ltd.

Country or region after: China

Address before: 100000 Beijing Dongcheng District Qinglong Hutong 1 Song Hua Building A1103-1113

Patentee before: VISIONVERA INFORMATION TECHNOLOGY Co.,Ltd.

Country or region before: China