CN111769915B - Data transmission method and related equipment - Google Patents
Data transmission method and related equipment Download PDFInfo
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- CN111769915B CN111769915B CN202010597284.2A CN202010597284A CN111769915B CN 111769915 B CN111769915 B CN 111769915B CN 202010597284 A CN202010597284 A CN 202010597284A CN 111769915 B CN111769915 B CN 111769915B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 211
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000012790 confirmation Methods 0.000 claims description 12
- 230000006870 function Effects 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
Abstract
The embodiment of the application discloses a data transmission method and related equipment, which are used for solving the technical problem that a sender repeatedly transmits the same data in the data transmission process to influence the transmission efficiency. The method of the embodiment of the application comprises the following steps: the sender acquires the data to be sent, judges whether the stored unique identifier is the same as the unique identifier of the data to be sent or not through the data duplication removing module, if so, indicates that the data which is the same as the current data to be sent exists in the data which is sent before by the sender, namely, indicates that the sender sends the same data once, and discards the data to be sent by the sender, so that the sender does not need to repeatedly transmit the same data and only performs one-time transmission, thereby saving network bandwidth and improving the efficiency of data transmission.
Description
Technical Field
The embodiment of the application relates to the field of data transmission, in particular to a data transmission method and related equipment.
Background
The KCP protocol is a reliable Automatic Repeat-reQuest (ARQ) protocol in the transport layer, and KCP aims to increase the transmission speed while ensuring the reliability of data transmission. In order to ensure the reliability of data transmission, the KCP protocol employs a retransmission mechanism. The retransmission mechanism is that, after the receiving side receives the data, the receiving side transmits information of the received data to the transmitting side, so that the transmitting side can determine that the data is normally transmitted. When the sender does not receive the information that the data has been received, the sender considers that the data is lost, and the sender needs to retransmit the lost data.
However, the fact that the sender does not receive the information that the data has been received does not indicate that the receiver has not received the data, but it is possible that the receiver has received the data, and the information that the data has been received is not received by the sender for various reasons. At this time, the retransmission mechanism of the KCP protocol may cause the sender to retransmit the data, which inevitably wastes bandwidth and affects the transmission efficiency compared with only one transmission, so that the data transmission between the sender and the receiver is not facilitated.
Disclosure of Invention
The embodiment of the application provides a data transmission method and related equipment, which are used for solving the technical problem that a sender repeatedly transmits the same data in the data transmission process to influence the transmission efficiency.
The first aspect of the embodiment of the application provides a data transmission method, which is applied to a sender, wherein the sender comprises a data deduplication module and a network transmission module, and comprises the following steps:
acquiring data to be transmitted, wherein the data to be transmitted carries a unique identifier;
judging whether the stored unique identifier is the same as the unique identifier of the data to be transmitted or not through the data deduplication module, wherein the stored unique identifier is the unique identifier of the data to be transmitted;
If yes, discarding the data to be sent;
if not, the data to be sent is sent to a receiver through the network transmission module, so that the network transmission module of the receiver receives the data to be sent.
Preferably, the method further comprises:
judging whether a plurality of same data exist in the data to be sent or not through the data deduplication module, wherein the unique identification of each same data is the same;
if so, any one of the plurality of identical data is reserved, and other data in the plurality of identical data is discarded.
Preferably, the sender further includes a reliable transmission module, and after the obtaining the data to be sent, the method further includes:
delivering the data to be sent to the reliable transmission module;
and packaging the data to be sent into data in a reliable transmission protocol format through the reliable transmission module.
Preferably, the method further comprises:
and sending confirmation information to the reliable transmission module through the network transmission module, wherein the confirmation information is used for indicating that the network transmission module sends the data to be sent to the receiver.
Preferably, the reliable transmission module is a functional module based on a reliable transmission protocol, and the reliable transmission protocol is any one of a rapid transmission control protocol, a reliable user datagram protocol or a data transmission protocol based on UDP.
Preferably, the unique identifier is a serial number;
the judging, by the data deduplication module, whether the stored unique identifier has the same unique identifier as the unique identifier of the data to be sent, includes:
judging whether the serial number of the data to be transmitted is larger than the maximum serial number or not through the data deduplication module, wherein the maximum serial number is the maximum value of a plurality of serial numbers of a plurality of transmitted data;
if not, discarding the data to be sent;
if yes, the data to be sent are sent to the receiving party through the network transmission module.
Preferably, the network transmission module is a functional module that performs data transmission based on a transmission control protocol.
The second aspect of the embodiment of the application provides a data transmission method, which is applied to a receiver, wherein the receiver comprises a data deduplication module and a network transmission module, and comprises the following steps:
receiving data to be saved sent by a sender through a network transmission module of the sender through the network transmission module, wherein the data to be saved carries a unique identifier;
judging whether the stored unique identifier is the same as the unique identifier of the data to be stored or not through the data deduplication module, wherein the stored unique identifier is the unique identifier of the received data;
If yes, discarding the data to be saved;
if not, the data to be stored is stored.
Preferably, the method further comprises:
judging whether a plurality of same data exist in the data to be stored or not through the data deduplication module, wherein the unique identification of each same data is the same;
if so, any one of the plurality of identical data is reserved, and other data in the plurality of identical data is discarded.
Preferably, the receiving side further comprises a reliable transmission module, and the method further comprises:
and sending confirmation information to the reliable transmission module of the sender through the reliable transmission module, wherein the confirmation information is used for indicating that the data to be saved is successfully received.
A third aspect of an embodiment of the present application provides a device of a sender, where the device of the sender includes:
the acquisition module is used for acquiring data to be transmitted, wherein the data to be transmitted carries a unique identifier;
the data deduplication module is used for judging whether the stored unique identifier is the same as the unique identifier of the data to be transmitted or not, wherein the stored unique identifier is the unique identifier of the data to be transmitted;
The discarding module is used for discarding the data to be sent when the stored unique identifier has the same unique identifier as the unique identifier of the data to be sent;
and the network transmission module is used for transmitting the data to be transmitted to a receiver when the stored unique identifier is not the same as the unique identifier of the data to be transmitted, so that the network transmission module of the receiver receives the data to be transmitted.
Preferably, the data deduplication module is further configured to determine whether a plurality of identical data exists in the plurality of data to be sent, where a unique identifier of each identical data is identical, and if so, any one of the plurality of identical data is reserved, and other data in the plurality of identical data is discarded.
Preferably, the acquiring module is further configured to deliver the data to be sent to the reliable transmission module;
the sender's device further includes:
and the reliable transmission module is used for packaging the data to be transmitted into data in a reliable transmission protocol format.
Preferably, the network transmission module is further configured to send acknowledgement information to the reliable transmission module, where the acknowledgement information is used to indicate that the network transmission module has sent the data to be sent to the receiver.
Preferably, the reliable transmission module is a functional module based on a reliable transmission protocol, and the reliable transmission protocol is any one of a rapid transmission control protocol, a reliable user datagram protocol or a data transmission protocol based on UDP.
Preferably, the unique identifier is a serial number;
the data deduplication module is specifically configured to determine whether a sequence number of the data to be sent is greater than a maximum sequence number, where the maximum sequence number is a maximum value of a plurality of sequence numbers of the sent data;
the discarding module is specifically configured to discard the data to be sent when the sequence number of the data to be sent is not greater than the maximum sequence number;
the network transmission module is specifically configured to send the data to be sent to the receiver when the sequence number of the data to be sent is greater than the maximum sequence number.
Preferably, the network transmission module is a functional module that performs data transmission based on a transmission control protocol.
A fourth aspect of the present application provides a device of a receiving party, where the device of the receiving party includes:
the network transmission module is used for receiving data to be stored, which is sent by a sender through the network transmission module of the sender, wherein the data to be stored carries a unique identifier;
The data deduplication module is used for judging whether the stored unique identifier is the same as the unique identifier of the data to be stored or not, wherein the stored unique identifier is the unique identifier of the received data;
the discarding module is used for discarding the data to be saved when the unique identifier which is the same as the unique identifier of the data to be saved exists in the saved unique identifiers;
and the storage module is used for storing the data to be stored when the stored unique identifier is not the same as the unique identifier of the data to be stored.
Preferably, the data deduplication module is further configured to determine whether a plurality of identical data exists in the plurality of data to be saved, where a unique identifier of each identical data is identical, and if so, any one of the plurality of identical data is reserved, and other data in the plurality of identical data is discarded.
Preferably, the device of the receiving party further includes:
and the reliable transmission module is used for sending confirmation information to the reliable transmission module of the sender, wherein the confirmation information is used for indicating that the data to be saved is successfully received.
A fifth aspect of the embodiment of the present application provides a device of a sender, where the device of the sender includes a data deduplication module and a network transmission module, and the device of the sender includes:
a processor, a memory, a bus, and an input/output device;
the processor is connected with the memory and the input and output equipment;
the bus is respectively connected with the processor, the memory and the input and output equipment;
the processor is used for acquiring data to be transmitted, the data to be transmitted carries unique identifiers, the data deduplication module judges whether the stored unique identifiers have unique identifiers identical to the unique identifiers of the data to be transmitted or not, the stored unique identifiers are the unique identifiers of the data to be transmitted, when the stored unique identifiers have unique identifiers identical to the unique identifiers of the data to be transmitted, the data to be transmitted is discarded, and when the stored unique identifiers do not have unique identifiers identical to the unique identifiers of the data to be transmitted, the data to be transmitted is transmitted to a receiver, so that the network transmission module of the receiver receives the data to be transmitted.
A sixth aspect of the embodiments of the present application provides a computer storage medium having stored therein instructions which, when executed on a computer, cause the computer to perform the method of the first aspect described above.
From the above technical solutions, the embodiment of the present application has the following advantages:
in the embodiment of the application, the sender acquires the data to be sent, judges whether the stored unique identifier is the same as the unique identifier of the data to be sent or not through the data duplication removing module, if so, indicates that the data which is the same as the current data to be sent exists in the data which is sent by the sender before, namely, indicates that the sender sends the same data once, and discards the data to be sent by the sender, so the sender does not need to repeatedly transmit the same data, and only performs one-time transmission, thereby saving network bandwidth and improving the efficiency of data transmission.
Drawings
FIG. 1 is a schematic flow chart of a data transmission method in an embodiment of the application;
FIG. 2 is a schematic diagram of another flow chart of the data transmission method according to the embodiment of the application;
FIG. 3 is a schematic diagram of another flow chart of the data transmission method according to the embodiment of the application;
FIG. 4 is a schematic diagram of another flow chart of the data transmission method according to the embodiment of the application;
fig. 5 is a schematic structural diagram of a sender device according to an embodiment of the present application;
fig. 6 is another schematic structural diagram of a device of a sender in an embodiment of the present application;
fig. 7 is a schematic structural diagram of a device of a receiving party according to an embodiment of the present application;
fig. 8 is a schematic diagram of another structure of a device of a receiving party according to an embodiment of the present application;
fig. 9 is another schematic structural diagram of a sender device in an embodiment of the present application.
Detailed Description
The embodiment of the application provides a data transmission method and related equipment, which are used for solving the technical problem that a sender repeatedly transmits the same data in the data transmission process to influence the transmission efficiency.
Referring to fig. 1, an embodiment of a data transmission method in an embodiment of the present application includes:
101. acquiring data to be transmitted;
the method of the embodiment can be applied to a sender, the sender comprises a data deduplication module and a network transmission module, the data transmission module refers to a functional module for performing data deduplication processing, the network transmission module refers to a functional module for performing data transmission based on a network transmission protocol, and the sender can perform corresponding operations and realize functions corresponding to the modules by using the data deduplication module and the network transmission module.
In this embodiment, each piece of data acquired by the sender carries a unique identifier, where the unique identifier may be included in the header of the data, and if the data is in the form of a data packet, the unique identifier may be encapsulated in the header of the data packet. Therefore, the data to be transmitted generated by the sender also carries the unique identifier. The unique identifier refers to a symbol for identifying data, one data corresponds to one unique identifier, and the unique identifiers of the same data are the same.
The method for the sender to obtain the data to be sent may be that the sender generates the data to be sent by itself, or may be that the sender obtains the data to be sent from other nodes, and the method for obtaining the data to be sent is not limited. And, the data to be transmitted acquired by the transmitting side can be any format data.
In this embodiment, the sender and the receiver of the data may be terminals or servers, and if the sender or the receiver is a terminal, the terminal may be a terminal device such as a computer, a personal digital assistant (personal digital assitant, PDA), a tablet computer, or a smart phone.
102. Judging whether the stored unique identifiers have the same unique identifiers as the unique identifiers of the data to be sent or not through a data deduplication module, and if so, executing step 103; if not, go to step 104;
Because each piece of data acquired by the sender carries a unique identifier, each piece of data sent by the sender to the receiver also carries a unique identifier, and the sender can save the unique identifier of each piece of data sent. After obtaining the data to be sent, the sender judges whether the stored unique identifiers have the same unique identifiers as the unique identifiers of the data to be sent or not through a local data deduplication module, and if so, step 103 is executed; if not, step 104 is performed.
103. Discarding data to be transmitted;
when the data are the same, the unique identifiers corresponding to the data are the same. Therefore, when the stored unique identifier has the same unique identifier as the unique identifier of the data to be transmitted, the data which is the same as the current data to be transmitted in the data transmitted before is indicated, namely, the sender sends the same data. To avoid wasting bandwidth due to repeated data transmission and affecting the data transmission efficiency, the sender may directly discard the data to be sent and not send the data to the receiver.
104. Transmitting data to be transmitted to a receiver through a network transmission module;
if the stored unique identifier is not the same as the unique identifier of the data to be sent, which indicates that the sender has not sent the same data as the data to be sent, the sender needs to send the data to be sent to the receiver through the local network transmission module, so that the receiver can receive the data to be sent through the network transmission module of the receiver.
In this embodiment, the sender obtains the data to be sent, and determines, through the data deduplication module, whether the stored unique identifier is the same as the unique identifier of the data to be sent, if so, it indicates that the data previously sent by the sender has the same data as the current data to be sent, that is, indicates that the sender has sent the same data, and then the sender discards the data to be sent, so that the sender does not need to repeatedly transmit the same data, and only performs transmission once, thereby saving network bandwidth and improving data transmission efficiency.
In the embodiment of the application, if the network bandwidth is sufficient or the network transmission rate is high, the sender does not need to perform the de-duplication processing on the data to be sent, but the receiver performs the de-duplication processing on the received data. For a specific de-duplication process, refer to the embodiment shown in fig. 2, and another embodiment of the data transmission method in this embodiment of the present application includes:
201. Receiving data to be saved sent by a sender through a network transmission module of the sender through the network transmission module;
in this embodiment, the receiving side also includes a data deduplication module and a network transmission module. The data deduplication module of the receiving party is similar to the data deduplication module of the transmitting party in the embodiment shown in fig. 1, and the network transmission module of the receiving party is similar to the network transmission module of the transmitting party in the embodiment shown in fig. 1, and will not be repeated here.
The receiving side may receive, through the network transmission module, the data to be saved sent by any sending side through the network transmission module of the sending side, where the received data to be saved carries a unique identifier, and the unique identifier is similar to the unique identifier of the data to be sent in the foregoing embodiment shown in fig. 1, and is not described herein again.
In this embodiment, the receiving party and the sending party of the data may be a terminal or a server, and if the sending party or the receiving party is a terminal, the terminal may specifically be a terminal device such as a computer, a personal digital assistant (personal digital assitant, PDA), a tablet computer, a smart phone, and the like.
202. Judging whether the stored unique identifiers have the same unique identifiers as the unique identifiers of the data to be stored or not through a data deduplication module, and if so, executing step 203; if not, go to step 204;
In this embodiment, the locally stored data of the receiving party carries a unique identifier, and the receiving party can store the unique identifier of the stored data. Then, when the data to be saved is received, the receiver can judge whether the saved unique identifier is the same as the currently received unique identifier of the data to be saved or not through the data deduplication module, wherein the saved unique identifier is the unique identifier of the data saved by the receiver before.
If there is a unique identifier identical to the unique identifier of the currently received data to be saved, step 203 is performed; if not, step 204 is performed.
203. Discarding data to be saved;
the unique identifier in this embodiment is similar to the unique identifier of the data to be transmitted in the embodiment shown in fig. 1 described above, and the unique identifier of the same data is the same. Therefore, when the stored unique identifier has the same unique identifier as the unique identifier of the currently received data to be stored, the data stored previously has the same data as the current data to be stored, namely, the receiver has stored the same data. In order to avoid the repetition of data and occupy excessive memory space, the receiver can discard the data to be saved and not store the data to be saved.
204. Storing data to be stored;
if the stored unique identifier is not the same as the unique identifier of the currently received data to be stored, which indicates that the receiver does not store the same data as the data to be stored yet, the receiver can store the data to be stored. The data to be saved may be any format of data.
In this embodiment, before the data is stored, the receiver first determines, through the data deduplication module, whether the stored unique identifier is the same as the unique identifier of the data to be stored, so as to determine whether the stored data is the same as the data to be stored, if so, it indicates that the receiver has stored the same data, and at this time, the receiver can discard the data to be stored, thereby avoiding excessive memory space occupied by repeated data.
Embodiments of the present application will be described in further detail below based on the embodiments shown in fig. 1 and 2. Referring to fig. 3, another embodiment of a data transmission method in an embodiment of the present application includes:
301. acquiring data to be transmitted;
the operation performed in this step is similar to the operation performed in step 101 in the embodiment shown in fig. 1, and will not be described here again.
302. Delivering data to be transmitted to a reliable transmission module;
in this embodiment, the sender further includes a reliable transmission module, where the reliable transmission module refers to a functional module based on a reliable transmission protocol. The reliable transport protocol may be any one of a rapid transport control protocol KCP, a Reliable User Datagram Protocol (RUDP), or a UDP-based data transport protocol (UDP-based data transfer protocol, UDT), and the specific type of the reliable transport protocol is not limited.
After the sender obtains the data to be sent, the data to be sent is delivered to the reliable transmission module so that the reliable transmission module can process the data.
In this embodiment, after the data to be sent is delivered to the reliable transmission module, the reliable transmission module generates a unique identifier for each data to be sent, so that each data to be sent carries the unique identifier.
In practical application, if the data size of the data to be sent is large, the reliable transmission module may segment the data to be sent, segment the data to be sent into a plurality of segments, and allocate a unique identifier to each segment.
Meanwhile, when the number of data to be transmitted is large and the number of unique identifiers is limited, the unique identifiers of the data to be transmitted can be multiplexed. For example, a certain unique identifier such as data096 has been used as the unique identifier of the data a to be transmitted. When data096 is not used for a preset period of time (the preset period of time may be a longer period of time), then data096 may be used again as the unique identifier of other data to be transmitted (such as data B to be transmitted), thereby realizing multiplexing of the unique identifier.
303. Packaging the data to be transmitted into data in a reliable transmission protocol format through a reliable transmission module;
after delivering the data to be transmitted to the reliable transmission module, the sender encapsulates the data to be transmitted into data in a reliable transmission protocol format through the reliable transmission module. For example, if the reliable transmission module is a function module based on a KCP protocol, the reliable transmission module may be referred to as a KCP module, through which the sender encapsulates data to be transmitted into data in a KCP protocol format. Similarly, if the reliable transport module is a functional module based on the UDT protocol, the reliable transport module may be referred to as a UDT module, through which the sender encapsulates the data to be sent into data in the UDT protocol format. And the sender packages the data to be sent into data in a reliable transmission protocol format corresponding to the reliable transmission module, so that the format of the data to be sent can be matched with the current transmission link, and the transmission rate of the data to be sent is improved.
304. Judging whether a plurality of pieces of same data exist in a plurality of pieces of data to be sent or not through a data deduplication module;
in this embodiment, the data deduplication module performs deduplication processing on the data to be sent, and in addition to the modes mentioned in steps 102 to 104 of the embodiment shown in fig. 1, the deduplication processing may also be performed in such a manner that the sender determines, through the data deduplication module, whether there are multiple identical data in the multiple data to be sent, and the determination method determines according to the unique identifier of the data to be sent, that is, the unique identifiers are identical, and the data corresponding to the identical unique identifiers are identical. If there are a plurality of identical data, the unique identification of each of the plurality of identical data is identical.
If there are multiple identical data, the sender will perform step 305 to further deduplicate the multiple data to be sent.
305. Any one of the plurality of identical data is reserved, and other data in the plurality of identical data is discarded;
when it is determined that the same data exists, the sender reserves any one of the plurality of same data and discards other data in the plurality of same data, thereby implementing deduplication processing of the data to be sent. For example, if 2 data among the data to be transmitted are identical, the transmitting side discards any one of the 2 data and retains the other data.
306. Judging whether the stored unique identifiers have the same unique identifiers as the unique identifiers of the data to be sent or not through a data deduplication module, and if so, executing step 307; if not, go to step 308;
in this embodiment, the unique identifier refers to a symbol that can uniquely identify certain data, and unique identifiers of different data are different; the unique identifiers are the same, then the data are the same. The unique identification may be a sequence number of the data or other information that may uniquely identify the data. The serial number of the data to be transmitted may be represented by a text such as a numeric form or a letter form, and the representation form of the serial number is not limited, and may be represented as data00001A, for example.
In this embodiment, the data sent by the sender are arranged from small to large according to the sequence number of the data, and the smaller the sequence number is, the earlier the data is sent; the larger the sequence number, the later the transmission time of the data. For example, the sequence numbers of the transmitted data are data001 to data896, wherein the data with the sequence number data001 is the data transmitted earliest, the transmission time of the data with the sequence number data896 is the latest, and the sequence number data896 is the maximum value of a plurality of sequence numbers corresponding to a plurality of data transmitted by the transmitter.
Therefore, the data deduplication module may determine whether the unique identifier identical to the unique identifier of the data to be transmitted is present, by determining, by the data deduplication module, whether the sequence number of the data to be transmitted is greater than the maximum sequence number, and if not, indicating that in the transmitted data, there is data identical to the sequence number of the current data to be transmitted, that is, there is data identical to the current data to be transmitted; if the number is larger than the maximum sequence number, the data which is the same as the sequence number of the current data to be transmitted is indicated to be absent in the transmitted data, namely, the data which is not the same as the data to be transmitted is absent.
For example, in the above example, if the sequence number of the data to be transmitted is data897, the sequence number is greater than the maximum sequence number of the transmitted data896, which indicates that there is no data identical to the current data to be transmitted in the transmitted data. If the serial number of the data to be transmitted is data800, the serial number is smaller than the maximum serial number, which indicates that the data which is the same as the current data to be transmitted exists in the transmitted data.
In this embodiment, if the sequence number includes a letter, the size of the letter may be defined artificially, for example, if the lower case letter a is defined as the minimum sequence number and the upper case letter Z is defined as the maximum sequence number, then whether the sequence number of the data to be sent is greater than the maximum sequence number may be determined according to the artificially defined letter size, instead of merely determining whether the sequence number of the data to be sent is greater than the maximum sequence number according to the number size.
By judging whether the serial number of the data to be sent is larger than the maximum serial number, the serial numbers of all sent data do not need to be traversed, the serial numbers of the data to be sent do not need to be compared with each serial number of the sent data, and only the serial numbers of the data to be sent are compared with the maximum serial numbers, so that the judging speed is improved.
In this embodiment, whether the unique identifier is the same as the unique identifier of the data to be transmitted may be determined without determining according to the sequence number, for example, the determination may be directly performed according to the form of the unique identifier, for example, if one unique identifier is data-abc and the other unique identifier is data-abf, it may be determined that the two unique identifiers are different. The present embodiment is not limited to the manner of judging whether the unique identifiers are the same.
Executing step 307 when it is determined that the same data as the data to be transmitted exists in the transmitted data through step 306; if it is determined that there is no identical data, step 308 is performed.
307. Discarding data to be transmitted;
308. transmitting data to be transmitted to a receiver through a network transmission module;
the operations performed by steps 307 to 308 are similar to those performed by steps 103 to 104 in the embodiment shown in fig. 1 described above.
In this embodiment, the network transmission module of the sender refers to a functional module that performs data transmission based on a network transmission protocol, where the network transmission protocol may be a transmission control protocol (TCP, transmission control protocol).
In this embodiment, the receiving side receives the data to be sent through its own network transmission module, where the network transmission module of the receiving side is also a functional module that performs data transmission based on the network transmission protocol. Preferably, the type of the network transmission module of the receiving party is the same as the type of the network transmission module of the transmitting party, for example, the network transmission modules are preferably all functional modules based on the TCP protocol or are all functional modules based on the UDP protocol.
In this embodiment, step 303 encapsulates the data to be sent into data in a reliable transport protocol format by the reliable transport module, and may be performed before step 306 or after step 306. If the step 306 is performed before, after the reliable transmission module encapsulates the data to be sent into data in a reliable transmission protocol format, the encapsulated data to be sent may be delivered to the data deduplication module, and when the data deduplication module determines that the data to be sent is not the same as the data to be sent in the sent data, the data to be sent is delivered to the network transmission module.
309. Transmitting confirmation information to the reliable transmission module through the network transmission module;
when the data deduplication module determines that the data to be transmitted is not the same as the data to be transmitted in the transmitted data, and the sender sends the data to be transmitted to the receiver through the network transmission module, the sender can also send acknowledgement information to the reliable transmission module through the network transmission module, wherein the acknowledgement information is used for indicating that the network transmission module has sent the data to be transmitted to the receiver, and the reliable transmission module can determine that the data to be transmitted is already transmitted, so that retransmission data does not need to be regenerated.
The acknowledgement information may be an acknowledgement character (acknowledge character, ACK) or other field information that may be used to indicate that the data to be transmitted has been transmitted.
In the embodiment of the application, the sender does not need to perform the de-duplication processing on the data to be sent, but directly sends the acquired data to be sent to the receiver, and the receiver performs the de-duplication processing on the data. For a specific de-duplication process, refer to the embodiment shown in fig. 4, and another embodiment of the data transmission method in this embodiment of the present application includes:
401. receiving data to be saved sent by a sender through a network transmission module of the sender through the network transmission module;
The operations performed by this step are similar to those performed by step 201 in the embodiment shown in fig. 2 described above. The sender may be any sender, for example, a sender as described in the embodiment shown in fig. 3.
402. Transmitting confirmation information to the reliable transmission module of the sender through the reliable transmission module;
in this embodiment, the receiving side further includes a reliable transmission module, which is similar to the reliable transmission module of the transmitting side in the embodiment shown in fig. 3, and may be a functional module based on KCP protocol, RUDP protocol, or UDT protocol.
When the receiver receives the data to be saved, the receiver sends confirmation information to the reliable transmission module of the sender through the reliable transmission module, wherein the confirmation information is used for indicating that the data to be saved is successfully received, so that the reliable transmission module of the sender can determine that the sent data is received, and further, the need of re-generating the retransmission data is avoided.
403. Judging whether a plurality of pieces of same data exist in a plurality of pieces of data to be saved or not through a data deduplication module;
after receiving the data to be saved, the receiver can judge whether a plurality of identical data exist in the plurality of data to be saved through the data deduplication module, and the judging method is to judge according to the unique identifiers of the data to be saved, namely the unique identifiers are identical, and the data corresponding to the identical unique identifiers are identical. If there are a plurality of identical data, the unique identification of each of the plurality of identical data is identical.
If there are multiple identical data, the recipient will execute step 404 to further deduplicate the multiple data to be saved.
404. Any one of the plurality of identical data is reserved, and other data in the plurality of identical data is discarded;
when the same data is determined to exist, the receiver reserves any one of the plurality of same data and discards other data in the plurality of same data, thereby realizing the deduplication processing of the data to be saved. For example, if 2 data among the data to be saved are identical, the receiving side discards any one of the 2 data and retains the other data.
405. Judging whether the stored unique identifiers have the same unique identifiers as the unique identifiers of the data to be stored or not through a data deduplication module, and if so, executing step 406; if not, go to step 407;
406. discarding data to be saved;
407. storing data to be stored;
the operations performed in steps 405 to 407 are similar to those performed in steps 202 to 204 in the embodiment shown in fig. 2, and will not be repeated here.
In this embodiment, the unique identifier may also be a sequence number of data, where the sequence number of the data is similar to the sequence number described in step 306 of the embodiment shown in fig. 3, and the method of determining whether the stored data has the same data as the current data to be stored according to the sequence number of the data is similar to the method of determining whether the transmitted data has the same data as the data to be transmitted according to the sequence number of the data in step 306 of the embodiment shown in fig. 3, which is not repeated herein.
In this embodiment, the sender may directly send the obtained data to be sent to the receiver without performing deduplication processing on the data to be sent, and the receiver performs deduplication processing on the data, thereby improving the feasibility of the scheme.
The functions and the executed operations realized by the network transmission module, the data deduplication module and the reliable transmission module respectively can be realized by codes, and the operations of the corresponding modules and the functions of the realized modules can be executed by running the codes corresponding to the modules.
The data transmission method in the embodiment of the present application is described above, and the following describes the device of the sender in the embodiment of the present application, referring to fig. 5, one embodiment of the device of the sender in the embodiment of the present application includes:
the acquiring module 501 is configured to acquire data to be sent, where the data to be sent carries a unique identifier;
the data deduplication module 502 is configured to determine whether the stored unique identifier is the same as the unique identifier of the data to be sent, where the stored unique identifier is the unique identifier of the data to be sent;
a discarding module 503, configured to discard the data to be sent when the stored unique identifiers have the same unique identifier as the unique identifier of the data to be sent;
And the network transmission module 504 is configured to send the data to be sent to the receiver when the stored unique identifier does not have the unique identifier identical to the unique identifier of the data to be sent, so that the network transmission module of the receiver receives the data to be sent.
In this embodiment, the operations performed by the units in the sender device are similar to those described in the foregoing embodiment shown in fig. 1, and will not be described here again.
In this embodiment, the obtaining module 501 obtains data to be sent, the data deduplication module 502 determines whether the stored unique identifier is the same as the unique identifier of the data to be sent, if so, it indicates that the sender has the same data as the current data to be sent in the data sent before, that is, indicates that the sender has sent the same data, and the discarding module 503 discards the data to be sent, so the sender does not need to repeatedly transmit the same data, and only performs transmission once, thereby saving network bandwidth and improving efficiency of data transmission.
Referring to fig. 6, an embodiment of a device of a sender in an embodiment of the present application includes:
the acquiring module 601 is configured to acquire data to be sent, where the data to be sent carries a unique identifier;
The data deduplication module 602 is configured to determine whether the stored unique identifier is the same as the unique identifier of the data to be sent, where the stored unique identifier is the unique identifier of the data to be sent;
a discarding module 603, configured to discard the data to be sent when the stored unique identifiers have the same unique identifier as the unique identifier of the data to be sent;
and the network transmission module 604 is configured to send the data to be sent to the receiver when the stored unique identifier does not have the unique identifier identical to the unique identifier of the data to be sent, so that the network transmission module of the receiver receives the data to be sent.
In a preferred implementation manner of this embodiment, the data deduplication module 602 is further configured to determine whether a plurality of identical data exists in the plurality of data to be sent, where a unique identifier of each identical data is identical, and if so, any one of the plurality of identical data is reserved, and other data in the plurality of identical data is discarded.
In another preferred implementation of this embodiment, the obtaining module 601 is further configured to deliver the data to be sent to the reliable transmission module;
the apparatus of the sender further includes:
The reliable transmission module 605 is configured to encapsulate data to be sent into data in a reliable transmission protocol format.
In another preferred implementation of this embodiment, the network transmission module 604 is further configured to send acknowledgement information to the reliable transmission module 605, where the acknowledgement information is used to indicate that the network transmission module 604 has sent the data to be sent to the receiver.
In another preferred implementation of this embodiment, the reliable transport module 605 is a functional module based on a reliable transport protocol, and the reliable transport protocol is any one of a rapid transport control protocol, a reliable user datagram protocol, or a data transport protocol based on UDP.
In another preferred implementation of this embodiment, the unique identifier is a serial number;
the data deduplication module 602 is specifically configured to determine whether a sequence number of data to be sent is greater than a maximum sequence number, where the maximum sequence number is a maximum value of a plurality of sequence numbers of the plurality of sent data;
the discarding module 603 is specifically configured to discard the data to be sent when the sequence number of the data to be sent is not greater than the maximum sequence number;
the network transmission module 604 is specifically configured to send the data to be sent to the receiver when the sequence number of the data to be sent is greater than the maximum sequence number.
In another preferred implementation of this embodiment, the network transmission module 604 is a functional module that performs data transmission based on a transmission control protocol.
In this embodiment, the operations performed by the units in the sender's device are similar to those described in the embodiment shown in fig. 3, and are not repeated here.
The foregoing describes a sender device in an embodiment of the present application, and the following describes a receiver device in an embodiment of the present application, referring to fig. 7, where an embodiment of a receiver device in an embodiment of the present application includes:
the network transmission module 701 is configured to receive data to be saved, which is sent by the sender through the network transmission module of the sender, where the data to be saved carries a unique identifier;
the data deduplication module 702 is configured to determine whether the stored unique identifier is the same as the unique identifier of the data to be stored, where the stored unique identifier is the unique identifier of the received data;
a discarding module 703, configured to discard the data to be saved when the unique identifier that is the same as the unique identifier of the data to be saved exists in the saved unique identifiers;
and a saving module 704, configured to save the data to be saved when the saved unique identifiers have no unique identifier that is the same as the unique identifier of the data to be saved.
In this embodiment, the operations performed by the units in the device of the receiving party are similar to those described in the embodiment shown in fig. 2, and are not repeated here.
In this embodiment, before the data is stored by the receiver, the data deduplication module 702 determines whether the stored unique identifier is the same as the unique identifier of the data to be stored, so as to determine whether the stored data is the same as the data to be stored, if so, the receiver is indicated to store the same data, and at this time, the discarding module 703 may discard the data to be stored, so as to avoid the excessive memory space occupied by the repeated data.
Referring to fig. 8, an embodiment of a device for a receiving party in an embodiment of the present application includes:
the network transmission module 801 is configured to receive data to be saved, which is sent by a sender through the network transmission module of the sender, where the data to be saved carries a unique identifier;
a data deduplication module 802, configured to determine whether the stored unique identifier has a unique identifier that is the same as a unique identifier of data to be stored, where the stored unique identifier is a unique identifier of received data;
a discarding module 803, configured to discard the data to be saved when the unique identifier that is the same as the unique identifier of the data to be saved exists in the saved unique identifiers;
A saving module 804, configured to save the data to be saved when the saved unique identifiers have no unique identifier that is the same as the unique identifier of the data to be saved.
In a preferred implementation manner of this embodiment, the data deduplication module 802 is further configured to determine whether a plurality of identical data exists in the plurality of data to be saved, where the unique identifier of each identical data is identical, and if so, any one of the plurality of identical data is reserved, and other data in the plurality of identical data is discarded.
In another preferred implementation manner of this embodiment, the device of the receiving party further includes:
the reliable transmission module 805 is configured to send acknowledgement information to the reliable transmission module of the sender, where the acknowledgement information is used to indicate that the data to be saved has been successfully received.
In this embodiment, the operations performed by the units in the sender's device are similar to those described in the embodiment shown in fig. 4, and are not repeated here.
In the following, description will be given of a device of a sender in an embodiment of the present application, referring to fig. 9, an embodiment of the device of the sender in an embodiment of the present application includes:
the sender's device 900 may include one or more central processing units (central processing units, CPU) 901 and memory 905, with one or more applications or data stored in memory 905.
Wherein the memory 905 may be volatile storage or persistent storage. The program stored in the memory 905 may include one or more modules, each of which may include a series of instruction operations in the device of the sender. Still further, the central processor 901 may be arranged to communicate with the memory 905 to execute a series of instruction operations in the memory 905 on the sender's device 900.
The sender's device 900 may also include one or more power supplies 902, one or more wired or wireless network interfaces 903, one or more input output interfaces 904, and/or one or more operating systems, such as Windows ServerTM, mac OS XTM, unixTM, linuxTM, freeBSDTM, etc.
The cpu 901 may perform operations performed by the sender device in the embodiments shown in fig. 1 and 3, which are not described herein.
The embodiment of the application also provides a computer storage medium, wherein one embodiment comprises: the computer storage medium has stored therein instructions that, when executed on a computer, cause the computer to perform the operations performed by the sender's device in the embodiments of fig. 1 and 3 described above.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM, random access memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Claims (10)
1. The data transmission method is characterized by being applied to a sender, wherein the sender comprises a data deduplication module and a network transmission module, and comprises the following steps:
acquiring data to be transmitted, wherein the data to be transmitted carries a unique identifier;
judging whether the stored unique identifier is the same as the unique identifier of the data to be transmitted or not through the data deduplication module, wherein the stored unique identifier is the unique identifier of the data to be transmitted;
if yes, discarding the data to be sent;
if not, the data to be sent is sent to a receiver through the network transmission module, so that the network transmission module of the receiver receives the data to be sent;
when a plurality of same data exist in the plurality of data to be sent, any one of the plurality of same data is reserved, and other data in the plurality of same data are discarded.
2. The data transmission method according to claim 1, characterized in that the method further comprises:
judging whether a plurality of same data exist in the data to be sent or not through the data deduplication module, wherein the unique identification of each same data is the same;
If so, any one of the plurality of identical data is reserved, and other data in the plurality of identical data is discarded.
3. The data transmission method according to claim 1, wherein the sender further comprises a reliable transmission module, and the method further comprises, after the obtaining the data to be transmitted:
delivering the data to be sent to the reliable transmission module;
and packaging the data to be sent into data in a reliable transmission protocol format through the reliable transmission module.
4. A data transmission method according to claim 3, characterized in that the method further comprises:
and sending confirmation information to the reliable transmission module through the network transmission module, wherein the confirmation information is used for indicating that the network transmission module sends the data to be sent to the receiver.
5. The data transmission method according to claim 4, wherein the reliable transmission module is a function module based on a reliable transmission protocol, and the reliable transmission protocol is any one of a rapid transport control protocol, a reliable user datagram protocol, or a reliable UDP-based data transmission protocol.
6. The data transmission method according to claim 1, wherein the unique identifier is a sequence number;
The judging, by the data deduplication module, whether the stored unique identifier has the same unique identifier as the unique identifier of the data to be sent, includes:
judging whether the serial number of the data to be transmitted is larger than the maximum serial number or not through the data deduplication module, wherein the maximum serial number is the maximum value of a plurality of serial numbers of a plurality of transmitted data;
if not, discarding the data to be sent;
if yes, the data to be sent are sent to the receiving party through the network transmission module.
7. The data transmission method according to any one of claims 1 to 6, wherein the network transmission module is a functional module that performs data transmission based on a transmission control protocol.
8. A sender's device, the sender's device comprising:
the acquisition module is used for acquiring data to be transmitted, wherein the data to be transmitted carries a unique identifier;
the data deduplication module is used for judging whether the stored unique identifier is the same as the unique identifier of the data to be transmitted or not, wherein the stored unique identifier is the unique identifier of the data to be transmitted;
The discarding module is used for discarding the data to be sent when the stored unique identifier has the same unique identifier as the unique identifier of the data to be sent;
the network transmission module is used for transmitting the data to be transmitted to a receiver when the stored unique identifier is not the same as the unique identifier of the data to be transmitted, so that the network transmission module of the receiver receives the data to be transmitted;
when a plurality of same data exist in the plurality of data to be sent, any one of the plurality of same data is reserved, and other data in the plurality of same data are discarded.
9. A sender device, wherein the sender device includes a data deduplication module and a network transmission module, the sender device comprising:
a processor, a memory, a bus, and an input/output device;
the processor is connected with the memory and the input and output equipment;
the bus is respectively connected with the processor, the memory and the input and output equipment;
the processor is used for acquiring data to be transmitted, the data to be transmitted carries unique identifiers, the data deduplication module judges whether the stored unique identifiers have unique identifiers identical to the unique identifiers of the data to be transmitted or not, the stored unique identifiers are the unique identifiers of the data to be transmitted, when the stored unique identifiers have unique identifiers identical to the unique identifiers of the data to be transmitted, the data to be transmitted is discarded, and when the stored unique identifiers do not have unique identifiers identical to the unique identifiers of the data to be transmitted, the data to be transmitted is transmitted to a receiver, so that the network transmission module of the receiver receives the data to be transmitted;
When a plurality of same data exist in the plurality of data to be sent, any one of the plurality of same data is reserved, and other data in the plurality of same data are discarded.
10. A computer storage medium having instructions stored therein, which when executed on a computer, cause the computer to perform the method of any of claims 1 to 7.
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| CN113452602B (en) * | 2021-06-21 | 2023-03-24 | 网易（杭州）网络有限公司 | Message transmission method and device, electronic equipment and storage medium |
| CN113973215A (en) * | 2021-10-25 | 2022-01-25 | 北京字节跳动网络技术有限公司 | Data deduplication method and device and storage medium |
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| JP2003078937A (en) * | 2001-08-30 | 2003-03-14 | Mitsubishi Electric Corp | Communication system and base station for the communication system |
| WO2017000147A1 (en) * | 2015-06-30 | 2017-01-05 | 深圳走天下科技有限公司 | Data transmission method and apparatus, and data reception method and apparatus |
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| CN101848490A (en) * | 2009-03-24 | 2010-09-29 | 三星电子株式会社 | In the mobile communication system according to the method for operation and the device of data duplicate retransmission |
| CN107229660A (en) * | 2016-03-25 | 2017-10-03 | 阿里巴巴集团控股有限公司 | A kind of method and apparatus of data deduplication |
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