CN110198345B - Data request method, system and device and storage medium - Google Patents
Data request method, system and device and storage medium Download PDFInfo
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- CN110198345B CN110198345B CN201910372772.0A CN201910372772A CN110198345B CN 110198345 B CN110198345 B CN 110198345B CN 201910372772 A CN201910372772 A CN 201910372772A CN 110198345 B CN110198345 B CN 110198345B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
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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
- H04L67/2866—Architectures; Arrangements
- H04L67/2876—Pairs of inter-processing entities at each side of the network, e.g. split proxies
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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
- H04L67/565—Conversion or adaptation of application format or content
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Abstract
The embodiment of the invention provides a data request method, a system and a device and a computer readable storage medium, wherein the method comprises the following steps: the proxy terminal removes a first message header in the first request data packet to obtain a second request data packet, inquires in a mapping relation according to the first message header to obtain address information of the Ethernet server, transmits the second request data packet and the address information to the proxy server, and the proxy server sends the second request data packet to the Ethernet server according to the address information and receives a second response data packet returned by the Ethernet server; and the proxy terminal receives the second response data packet, adds a second message header to the second response data packet to obtain a first response data packet, and the application program analyzes the first response data packet to obtain target data. The embodiment of the invention transmits the data packet without the message header in the video network, thereby reducing the occupation of the video network bandwidth when transmitting the data packet in the video network.
Description
Technical Field
The present invention relates to the field of video networking technologies, and in particular, to a data request method, system and apparatus, and a computer-readable storage medium.
Background
The video network is a special network for transmitting high-definition video and a special protocol at high speed based on Ethernet hardware, is a higher-level form of the Ethernet and is a real-time network.
At present, under the condition that a browser in the video network needs to access a server in the ethernet, the browser in the video network needs to carry a message header containing a local network address and a network address of the server in the ethernet in a data access request, and the data access request carrying the message header is transmitted from the video network to the ethernet, so that a large number of data access requests occupy more video network bandwidth resources.
Disclosure of Invention
In view of the above, embodiments of the present invention are proposed in order to provide a data request method, system and an apparatus and a computer-readable storage medium that overcome or at least partially solve the above problems.
In order to solve the above problems, an embodiment of the present invention discloses a data request method, which is applied to a video network, wherein the video network is in communication connection with an ethernet network, the video network includes a proxy terminal and a proxy server, the proxy terminal is provided with an application program, and the ethernet network includes an ethernet server; the proxy server is respectively in communication connection with the proxy terminal and the Ethernet server; the method comprises the following steps: the proxy terminal acquires a first request data packet, removes a first message header in the first request data packet to obtain a second request data packet, and the first request data packet represents that the application program acquires target data from the Ethernet server; the proxy terminal obtains address information of the Ethernet server according to the first message header in a preset mapping relation, and transmits the second request data packet and the address information to the proxy server, wherein the proxy server is used for sending the second request data packet to the Ethernet server according to the address information and receiving a second response data packet returned by the Ethernet server according to the second request data packet, and the second response data packet comprises the target data; and the proxy terminal receives the second response data packet from the proxy server and adds a second message header to the second response data packet to obtain a first response data packet, and the application program is used for analyzing the first response data packet to obtain the target data.
Optionally, a source address of the first packet header is a virtual address of the application program, and a destination address of the first packet header is identification information of the ethernet server; the step that the proxy terminal inquires the address information of the Ethernet server in a preset mapping relation according to the first message header comprises the following steps: and the proxy terminal inquires the mapping relation between preset identification information and address information according to the identification information of the Ethernet server to obtain the address information of the Ethernet server corresponding to the identification information of the Ethernet server.
Optionally, the agent terminal further includes a virtual network card and a data conversion device; the proxy terminal obtains a first request data packet, and removes a first message header in the first request data packet to obtain a second request data packet, comprising the following steps: and the data conversion equipment receives the first request data packet from the application program by using the virtual network card, and removes the first message header in the first request data packet to obtain the second request data packet.
Optionally, the proxy terminal further includes a data transceiver; the proxy terminal inquires the address information of the Ethernet server in a preset mapping relation according to the first message header, and transmits the second request data packet and the address information to the proxy server, wherein the steps comprise: the data conversion equipment queries the mapping relation according to the first message header to obtain the address information of the Ethernet server; the data conversion equipment transmits the second request data packet and the address information to the data transceiver equipment by using the virtual network card, so that the data transceiver equipment can send the second request data packet and the address information to the proxy server.
Optionally, the source address of the second packet header is address information of the ethernet server, and the destination address of the second packet header is a virtual address of the application program; the step that the proxy terminal receives the second response data packet from the proxy server and adds a second message header to the second response data packet to obtain a first response data packet comprises the following steps: the data conversion equipment receives the second response data packet from the data transceiver equipment by using the virtual network card, and adds the second message header to the second response data packet to obtain the first response data packet; the method further comprises the following steps: and the data conversion equipment returns the first response data packet to the application program by using the virtual network card.
The embodiment of the invention also discloses a data request system, which is applied to the video network, wherein the video network is in communication connection with the Ethernet, the video network comprises a proxy terminal and a proxy server, the proxy terminal is provided with an application program, and the Ethernet comprises an Ethernet server; the proxy server is respectively in communication connection with the proxy terminal and the Ethernet server; the agent terminal further includes: a packet header removing module, configured to obtain a first request packet, and remove a first packet header in the first request packet to obtain a second request packet, where the first request packet indicates that the application program obtains target data from the ethernet server; an address query module, configured to query, according to the first packet header, in a preset mapping relationship to obtain address information of the ethernet server, and transmit the second request packet and the address information to the proxy server, where the proxy server is configured to send the second request packet to the ethernet server according to the address information, and receive a second response packet returned by the ethernet server according to the second request packet, where the second response packet includes the target data; and the message header adding module is used for receiving the second response data packet from the proxy server and adding a second message header to the second response data packet to obtain a first response data packet, and the application program is used for analyzing the first response data packet to obtain the target data.
Optionally, a source address of the first packet header is a virtual address of the application program, and a destination address of the first packet header is identification information of the ethernet server; the address query module is configured to query, according to the identification information of the ethernet server, in a mapping relationship between preset identification information and address information, to obtain address information of the ethernet server corresponding to the identification information of the ethernet server.
Optionally, the agent terminal further includes a virtual network card; the message header removing module is configured to receive the first request data packet from the application program by using the virtual network card, and remove the first message header in the first request data packet to obtain the second request data packet; the agent terminal also comprises data transceiver equipment; the address query module is configured to query the mapping relationship according to the first packet header to obtain address information of the ethernet server, and transmit the second request packet and the address information to the data transceiver device by using the virtual network card, so that the data transceiver device sends the second request packet and the address information to the proxy server; the source address of the second message header is address information of the Ethernet server, and the destination address of the second message header is a virtual address of the application program; the message header adding module is configured to receive the second response data packet from the data transceiver device by using the virtual network card, add the second message header to the second response data packet to obtain the first response data packet, and return the first response data packet to the application program by using the virtual network card.
The embodiment of the invention also discloses a device, which comprises:
one or more processors; and
one or more machine-readable media having instructions stored thereon, which when executed by one or more of the processors, cause the apparatus to perform one or more data request methods as described in embodiments of the invention.
The embodiment of the invention also discloses a computer readable storage medium, which stores a computer program for enabling a processor to execute the data request method according to the embodiment of the invention.
The embodiment of the invention has the following advantages:
the data request scheme provided by the embodiment of the invention is applied to the video network, and the video network can be in communication connection with the Ethernet. The video network can comprise a proxy terminal and a proxy server, an application program is arranged on the proxy terminal, the Ethernet can comprise an Ethernet server, the proxy server can be respectively in communication connection with the proxy terminal and the Ethernet server, and the application program on the proxy terminal can access data on the Ethernet server through the proxy server.
In the embodiment of the present invention, an application generates a first request data packet carrying a header, and an agent terminal removes the header in the first request data packet to obtain a second request data packet, that is, the second request data packet does not include the header. And the proxy terminal inquires in a preset mapping relation according to the first message header to obtain the address information of the Ethernet server and transmits the second request data packet and the address information to the proxy server. The proxy server may send the second request packet to the ethernet server according to the address information. The ethernet server may return a second response packet, which does not include the header, to the proxy server according to the second request packet. And the proxy server transmits the second response data packet to the proxy terminal. And the proxy terminal adds a message header to the second response data packet to obtain a first response data packet, and then transmits the first response data packet to the application program.
The proxy terminal in the embodiment of the invention can remove the message header in the first request data packet of the application program to obtain the second request data packet without the message header, and transmits the second request data packet to the proxy server in the video network. And the proxy server sends the second request data packet to the Ethernet server, receives a second response data packet which does not contain the message header from the Ethernet server and sends the second response data packet to the proxy terminal. And the proxy terminal adds a message header to the second response data packet to obtain a first response data packet, and returns the first response data packet to the application program. The embodiment of the invention transmits the data packet without the message header in the video network, namely, the application program in the video network can access the target data of the Ethernet server, thereby reducing the occupation of the video network bandwidth when transmitting the data packet in the video network.
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 steps of a data request method embodiment of the present invention;
FIG. 6 is a conceptual diagram illustrating the design of a method for Ethernet access over a video network according to an embodiment of the present invention;
fig. 7 is a block diagram of a proxy terminal in an embodiment of a data request system according to 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 the traditional Ethernet (Ethernet) to face the potentially huge first 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: server, exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, code board, memory, 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 server, access exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, coding board, memory, 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 packets coming from 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 incoming data packet of the CPU module 304 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 and may include 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 308 is configured by the CPU module 304, 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.
Referring to fig. 5, a flowchart illustrating steps of an embodiment of a data request method according to the present invention is shown, where the data request method may be applied to a video network, and the video network may be communicatively connected to an ethernet network, where the video network may include a proxy terminal and a proxy server, the proxy terminal may be provided with an application program, and the ethernet network may include an ethernet server; the proxy server may be in communication connection with the proxy terminal and the ethernet server, respectively, and the data request method may specifically include the following steps:
In the embodiment of the invention, the proxy terminal in the video network is provided with the application program, and the application program can be a client such as a browser. The application program needs to access the Ethernet server in the Ethernet, namely, the application program sends a data access request to the Ethernet server, and the Ethernet server returns target data to the application program.
In practical applications, an application program may generate a first request data packet, where the first request data packet may include related information of target data to be accessed, and specific related information may include a number, a name, a location, and the like. The first request data packet is used for acquiring target data according to all or part of contents in the first request data packet by the Ethernet server and returning the target data to the application program.
In a preferred embodiment of the present invention, the first request packet may carry a first header, a source address of the first header may be a virtual address of the application, and a destination address of the first header may be identification information of the ethernet server. It should be noted that the identification information of the ethernet server may be a name, a number, a port number, and the like of the ethernet server, and the content, the format, and the like of the identification information of the ethernet server are not specifically limited in the embodiment of the present invention.
In a preferred embodiment of the present invention, the proxy terminal may further include a virtual network card and a data conversion device. The data conversion device may communicate with the application inside the proxy terminal using a virtual network card. In the process that the agent terminal acquires the first request data packet, the data conversion device may receive the first request data packet from the application program by using the virtual network card, and further remove the first packet header in the first request data packet to obtain a second request data packet. In the process that the data conversion device removes the first packet header in the first request packet, the data conversion device may read one or more preset fields of the first request packet according to a preset rule, determine data corresponding to the one or more preset fields as the first packet header, delete the first packet header, and retain data corresponding to the remaining fields. And taking the data corresponding to the residual fields as a second request data packet.
In the embodiment of the present invention, a mapping relationship between the identification information of the ethernet server and the address information of the ethernet may be preset. The proxy terminal may obtain address information of the corresponding ethernet server by querying in the mapping relationship according to the identification information of the ethernet server in the first packet header. It should be noted that the address information of the ethernet server may be an IP address or a socket number of the ethernet server, and the content, the format, and the like of the address information of the ethernet server are not specifically limited in the embodiment of the present invention.
After inquiring the address information of the ethernet server, the proxy terminal may bind the address information of the ethernet server with the second request packet, and then send the bound address information of the ethernet server and the second request packet to the proxy server. The proxy server may send the second request packet to the ethernet server according to the address information of the ethernet server. The process of transmitting the second request data packet to the ethernet network by the video network is completed, and the second request data packet does not include the header.
After receiving the second request data packet, the ethernet server may analyze the second request data packet to obtain related information of the target data to be accessed, and further obtain the target data according to the related information of the target data. The ethernet server needs to generate a second response packet according to the target data and return the second response packet to the proxy server. Therefore, the ethernet server may generate the second response packet according to the preset packet rule based on the target data, for example, if some fields in the packet rule that specify the second response packet are used for storing the target data, the ethernet server stores the target data into the corresponding fields to obtain the second response packet. The ethernet server returns a second response packet not containing the header to the proxy server according to the address information of the proxy server (the proxy server may also send the address information of the proxy server itself to the ethernet server when sending the second request packet to the ethernet server).
In a preferred embodiment of the present invention, the proxy terminal may further include a data transceiving device. The data conversion device may obtain address information of the ethernet server by querying in the mapping relationship according to the identification information of the ethernet server in the first packet header, and then transmit the second request packet and the address information of the ethernet server to the data transceiver device by using the virtual network card. The data-transceiving equipment may transmit the received second request packet and address information of the ethernet server to the proxy server.
In the embodiment of the invention, after the proxy server returns the second response data packet without the message header to the proxy terminal, the second message header is added to the second response data packet to obtain the first response data packet. The source address of the second header may be address information of the ethernet server, and the destination address of the second header may be a virtual address of the application program. In practical application, after receiving the second response data packet from the proxy server, the data transceiver device transmits the second response data packet to the data conversion device by using the virtual network card. The data conversion device may correspondingly add the content in the second header to a partial field in the second response packet according to a preset packet rule to obtain the first response packet. And the data conversion equipment transmits the first response data packet containing the second message header to the application program through the virtual network card. The application program can analyze the received first response data packet to obtain target data, and perform rendering and other processing on the target data.
Based on the above-mentioned related description about an embodiment of a data request method, a method for accessing an ethernet network through a video network is introduced below, as shown in fig. 6, a browser sends a first ethernet access request data packet IP _ packet to a data packet conversion module through a virtual network card, where the first ethernet access request data packet IP _ packet includes an IP packet header. And the data packet conversion module removes the IP message header in the first Ethernet access request data packet IP _ packet to obtain a second Ethernet access request data packet noip _ packet, wherein the second Ethernet access request data packet noip _ packet does not contain the IP message header. And the data packet conversion module transmits the second Ethernet access request data packet noip _ packet to the agent terminal agent through the virtual network card. And the proxy terminal sends the second Ethernet access request data packet noip _ packet to a remote proxy server proxy through the video network. And the proxy server proxy forwards the second Ethernet access request data packet noip _ packet to the Ethernet server through the socket. And the Ethernet server responds to the data access request of the second Ethernet access request data packet noip _ packet, and returns a second Ethernet response data packet to the proxy server proxy through the socket, wherein the second Ethernet response data packet does not contain an IP message header. And the proxy server proxy sends the second Ethernet response data packet to the proxy terminal agent through the video network. And the agent terminal agent transmits the second Ethernet response data packet to the data packet conversion module through the virtual network card. And the data packet conversion module adds an IP message header to the second Ethernet response data packet to obtain a first Ethernet response data packet, and returns the first Ethernet response data packet to the browser through the virtual network card.
The data request method provided by the embodiment of the invention is applied to the video network, and the video network can be in communication connection with the Ethernet. The video network can comprise a proxy terminal and a proxy server, an application program is arranged on the proxy terminal, the Ethernet can comprise an Ethernet server, the proxy server can be respectively in communication connection with the proxy terminal and the Ethernet server, and the application program on the proxy terminal can access data on the Ethernet server through the proxy server.
In the embodiment of the present invention, an application generates a first request data packet carrying a header, and an agent terminal removes the header in the first request data packet to obtain a second request data packet, that is, the second request data packet does not include the header. And the proxy terminal inquires in a preset mapping relation according to the first message header to obtain the address information of the Ethernet server and transmits the second request data packet and the address information to the proxy server. The proxy server may send the second request packet to the ethernet server according to the address information. The ethernet server may return a second response packet, which does not include the header, to the proxy server according to the second request packet. And the proxy server transmits the second response data packet to the proxy terminal. And the proxy terminal adds a message header to the second response data packet to obtain a first response data packet, and then transmits the first response data packet to the application program.
The proxy terminal in the embodiment of the invention can remove the message header in the first request data packet of the application program to obtain the second request data packet without the message header, and transmits the second request data packet to the proxy server in the video network. And the proxy server sends the second request data packet to the Ethernet server, receives a second response data packet which does not contain the message header from the Ethernet server and sends the second response data packet to the proxy terminal. And the proxy terminal adds a message header to the second response data packet to obtain a first response data packet, and returns the first response data packet to the application program. The embodiment of the invention transmits the data packet without the message header in the video network, namely, the application program in the video network can access the target data of the Ethernet server, thereby reducing the occupation of the video network bandwidth when transmitting the data packet in 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.
Referring to fig. 7, a block diagram of a proxy terminal in an embodiment of a data request system according to the present invention is shown, where the system is applied to a video network, and the video network is communicatively connected to an ethernet network, where the video network includes the proxy terminal and a proxy server, the proxy terminal is provided with an application program, and the ethernet network includes an ethernet server; the proxy server is respectively in communication connection with the proxy terminal and the Ethernet server; the agent terminal also comprises the following modules:
a packet header removing module 701, configured to obtain a first request packet, and remove a first packet header in the first request packet to obtain a second request packet, where the first request packet indicates that the application program obtains target data from the ethernet server; an address query module 702, configured to query, according to the first packet header in a preset mapping relationship, to obtain address information of the ethernet server, and transmit the second request packet and the address information to the proxy server, where the proxy server is configured to send the second request packet to the ethernet server according to the address information, and receive a second response packet returned by the ethernet server according to the second request packet, where the second response packet includes the target data; a packet header adding module 703 is configured to receive the second response packet from the proxy server, and add a second packet header to the second response packet to obtain a first response packet, where the application program is configured to analyze the first response packet to obtain the target data.
In a preferred embodiment of the present invention, a source address of the first packet header is a virtual address of the application program, and a destination address of the first packet header is identification information of the ethernet server; the address query module 702 is configured to query, according to the identification information of the ethernet server, in a mapping relationship between preset identification information and address information, to obtain address information of the ethernet server corresponding to the identification information of the ethernet server.
In a preferred embodiment of the present invention, the agent terminal further includes a virtual network card; the message header removing module 701 is configured to receive the first request data packet from the application program by using the virtual network card, and remove the first message header in the first request data packet to obtain the second request data packet; the agent terminal also comprises data transceiver equipment; the address query module 702 is configured to query the mapping relationship according to the first packet header to obtain address information of the ethernet server, and transmit the second request packet and the address information to the data transceiver device by using the virtual network card, so that the data transceiver device sends the second request packet and the address information to the proxy server; the source address of the second message header is address information of the Ethernet server, and the destination address of the second message header is a virtual address of the application program; the message header adding module 703 is configured to receive the second response data packet from the data transceiver device by using the virtual network card, add the second message header to the second response data packet to obtain the first response data packet, and return the first response data packet to the application program by using the virtual network card.
For the embodiment of the data request system, since it is basically similar to the embodiment of the data request method, the description is relatively simple, and for relevant points, reference may be made to partial description of the embodiment of the data request method.
An embodiment of the present invention further provides an apparatus, including:
one or more processors; and
one or more machine-readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform one or more data request methods according to embodiments of the invention.
Embodiments of the present invention further provide a computer-readable storage medium, which stores a computer program for enabling a processor to execute the data request method according to the embodiments of the present invention.
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 data request method, system, device and computer-readable storage medium provided by the present invention are described in detail above, and the principle and the implementation of the present invention are explained herein by applying specific examples, and the descriptions of the above examples are only used to help understand the method and the core idea of the present 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 data request method is characterized in that the method is applied to a video network which is in communication connection with an Ethernet, wherein the video network comprises a proxy terminal and a proxy server, the proxy terminal is provided with an application program, and the Ethernet comprises an Ethernet server; the proxy server is respectively in communication connection with the proxy terminal and the Ethernet server; the method comprises the following steps:
the proxy terminal acquires a first request data packet, and removes a first message header in the first request data packet to obtain a second request data packet, wherein the first request data packet represents that the application program acquires target data from the Ethernet server, and the second request data packet does not contain the message header;
the proxy terminal obtains address information of the Ethernet server according to the inquiry of the first message header in a preset mapping relation, and transmits the second request data packet and the address information to the proxy server, wherein the proxy server is used for sending the second request data packet to the Ethernet server according to the address information and receiving a second response data packet returned by the Ethernet server according to the second request data packet, the second response data packet comprises the target data, and the second response data packet does not comprise the message header;
the proxy terminal receives the second response data packet from the proxy server, and adds a second message header to the second response data packet to obtain a first response data packet, and the application program is used for analyzing the first response data packet to obtain the target data;
the source address of the first message header is a virtual address of the application program, and the destination address of the first message header is identification information of the ethernet server;
the step that the proxy terminal inquires the address information of the Ethernet server in a preset mapping relation according to the first message header comprises the following steps:
and the proxy terminal inquires the mapping relation between preset identification information and address information according to the identification information of the Ethernet server to obtain the address information of the Ethernet server corresponding to the identification information of the Ethernet server.
2. The data request method according to claim 1, wherein the agent terminal further comprises a virtual network card and a data conversion device;
the proxy terminal obtains a first request data packet, and removes a first message header in the first request data packet to obtain a second request data packet, comprising the following steps:
and the data conversion equipment receives the first request data packet from the application program by using the virtual network card, and removes the first message header in the first request data packet to obtain the second request data packet.
3. The data request method according to claim 2, wherein the agent terminal further comprises a data transceiving device;
the proxy terminal inquires the address information of the Ethernet server in a preset mapping relation according to the first message header, and transmits the second request data packet and the address information to the proxy server, wherein the steps comprise:
the data conversion equipment queries the mapping relation according to the first message header to obtain the address information of the Ethernet server;
the data conversion equipment transmits the second request data packet and the address information to the data transceiver equipment by using the virtual network card, so that the data transceiver equipment can send the second request data packet and the address information to the proxy server.
4. The data request method according to claim 3, wherein the source address of the second header is address information of the ethernet server, and the destination address of the second header is a virtual address of the application program;
the step that the proxy terminal receives the second response data packet from the proxy server and adds a second message header to the second response data packet to obtain a first response data packet comprises the following steps:
the data conversion equipment receives the second response data packet from the data transceiver equipment by using the virtual network card, and adds the second message header to the second response data packet to obtain the first response data packet;
the method further comprises the following steps:
and the data conversion equipment returns the first response data packet to the application program by using the virtual network card.
5. A data request system is characterized in that the system is applied to a video network which is in communication connection with an Ethernet, wherein the video network comprises a proxy terminal and a proxy server, the proxy terminal is provided with an application program, and the Ethernet comprises an Ethernet server; the proxy server is respectively in communication connection with the proxy terminal and the Ethernet server; the agent terminal further includes:
the message header removing module is used for acquiring a first request data packet and removing a first message header in the first request data packet to obtain a second request data packet, wherein the first request data packet represents that the application program acquires target data from the Ethernet server, and the second request data packet does not contain the message header;
an address query module, configured to query, according to the first packet header, in a preset mapping relationship to obtain address information of the ethernet server, and transmit the second request packet and the address information to the proxy server, where the proxy server is configured to send the second request packet to the ethernet server according to the address information, and receive a second response packet returned by the ethernet server according to the second request packet, where the second response packet includes the target data, and the second response packet does not include the packet header; the address query module is specifically configured to: inquiring in a mapping relation between preset identification information and address information according to the identification information of the Ethernet server to obtain the address information of the Ethernet server corresponding to the identification information of the Ethernet server;
a message header adding module, configured to receive the second response data packet from the proxy server, and add a second message header to the second response data packet to obtain a first response data packet, where the application program is configured to analyze the first response data packet to obtain the target data;
the source address of the first message header is the virtual address of the application program, and the destination address of the first message header is the identification information of the ethernet server.
6. The data request system of claim 5, wherein the agent terminal further comprises a virtual network card;
the message header removing module is configured to receive the first request data packet from the application program by using the virtual network card, and remove the first message header in the first request data packet to obtain the second request data packet; the agent terminal also comprises data transceiver equipment;
the address query module is configured to query the mapping relationship according to the first packet header to obtain address information of the ethernet server, and transmit the second request packet and the address information to the data transceiver device by using the virtual network card, so that the data transceiver device sends the second request packet and the address information to the proxy server;
the source address of the second message header is address information of the Ethernet server, and the destination address of the second message header is a virtual address of the application program;
the message header adding module is configured to receive the second response data packet from the data transceiver device by using the virtual network card, add the second message header to the second response data packet to obtain the first response data packet, and return the first response data packet to the application program by using the virtual network card.
7. An apparatus, comprising:
one or more processors; and
one or more machine-readable media having instructions stored thereon that, when executed by one or more of the processors, cause the apparatus to perform a data request method as recited in any of claims 1-4.
8. A computer-readable storage medium storing a computer program for causing a processor to execute the data requesting method according to any one of claims 1 to 4.
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| CN110650147A (en) * | 2019-09-27 | 2020-01-03 | 视联动力信息技术股份有限公司 | Data acquisition method and system |
| CN112688985B (en) * | 2019-10-18 | 2022-07-12 | 华为技术有限公司 | Communication method and device |
| CN111404988A (en) * | 2020-02-13 | 2020-07-10 | 视联动力信息技术股份有限公司 | Method and device for accessing internet server |
| CN111464879B (en) * | 2020-02-27 | 2022-12-23 | 视联动力信息技术股份有限公司 | Data communication method and device |
| CN113453062B (en) * | 2020-03-25 | 2023-05-05 | 北京金山云网络技术有限公司 | Video metadata acquisition and processing method, device, system and electronic equipment |
| CN112019559A (en) * | 2020-09-04 | 2020-12-01 | 北京六间房科技有限公司 | Data transmission system |
| CN112954740B (en) * | 2021-02-03 | 2022-11-25 | 维沃移动通信有限公司 | Data sending method, data sending device, data receiving method, data receiving device and communication device |
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