CN103297430B - Data transmission equipment and data transmission method - Google Patents

Abstract

An embodiment of the invention provides data transmission equipment and a data transmission method. The method includes a TCP (transmission control protocol) agent receives network data which include emergency pointer information and emergency data; the TCP agent acquires the emergency pointer information and the emergency data; the TCP agent performs data processing on the emergency data according to the emergency pointer information to acquire processed emergency data; the TCP agent fills the emergency pointer information and the processed emergency data in messages and forwards the messages. Flexibility of data processing can be improved.

Description

Data transmission method and equipment

technical field

The embodiments of the present invention relate to the technical field of communications, and more specifically, to a data transmission method and device.

Background technique

In order to monitor or process the transmission of network data at a specific node, a cross-connection network device, such as a Transmission Control Protocol (Transmission Control Protocol, TCP) proxy (Proxy), is introduced. The TCP agent is respectively connected with the server and the client to realize forwarding and processing of network data, wherein, the network data forwarded by the TCP agent includes common data and urgent data.

In the existing mechanism, since the urgent pointer (Urgent Pointer) information in the data message format and the data pointed to by the urgent pointer (the above urgent data) are only parsed at the application layer, the urgent pointer information includes the urgent flag (report URG flag in the message format), the start sequence number of the urgent data (the serial number of the TCP message in the message format), and the end position of the urgent data (urgent pointer in the message format). However, the TCP proxy does not care about the upper-layer application, and directly forwards urgent pointer information and urgent data, resulting in inflexible data processing.

Contents of the invention

Embodiments of the present invention provide a data transmission method and device, which can improve the flexibility of data processing.

In a first aspect, a data transmission method is provided, the method includes: a transmission control protocol TCP agent receives network data, and the network data carries urgent pointer information and urgent data; the TCP agent acquires the urgent pointer information and the Urgent data; the TCP proxy performs data processing on the urgent data according to the urgent pointer information to obtain processed urgent data; the TCP proxy fills the message with the urgent pointer information and the processed urgent data , and forward the message.

With reference to the first aspect, in another implementation manner of the first aspect, the message is a TCP message, and the TCP proxy fills the message with the urgent pointer information and the processed urgent data, including : The TCP agent fills the urgent flag in the urgent pointer information into the TCP option of the TCP message, and uses the urgent data start sequence number and urgent data end position in the urgent pointer information, and the The processed urgent data is filled in the urgent data field of the data area of the TCP message.

In combination with the first aspect or any of the above implementations, in another implementation of the first aspect, the message is a TCP message, and the TCP proxy fills the message with the urgent The pointer information and the processed urgent data include: the TCP agent sets the urgent pointer URG flag in the TCP message, sets the urgent data start sequence number and the urgent data end sequence number in the urgent pointer information The location, and the processed urgent data are filled in the urgent data domain of the data area of the TCP message.

In combination with the first aspect or any of the above-mentioned implementation manners, in another implementation manner of the first aspect, the emergency data field of the data area of the TCP message further includes For the urgent data, information about the position of the urgent data relative to the normal data in the data stream.

In combination with the first aspect or any of the above-mentioned implementation manners, in another implementation manner of the first aspect, the TCP proxy fills the message with the urgent pointer information and the processed urgent The data includes: the TCP agent sets the message type identifier in the message as the urgent flag in the urgent pointer information, sets the urgent data start sequence number and the urgent data end position in the urgent pointer information, And the urgent data is filled in the payload of the message, and the message includes a TCP message or a User Datagram Protocol (UDP) message.

With reference to the first aspect or any of the above-mentioned implementation manners, in another implementation manner of the first aspect, the network data also carries ordinary data, and the packet further includes the ordinary data.

In combination with the first aspect or any of the above-mentioned implementation manners, in another implementation manner of the first aspect, the data processing of the emergency data includes: compressing the emergency data or Decompress, deduplicate or restore the urgent data, or encrypt or decrypt the urgent data.

In a second aspect, a transmission control protocol (TCP) agent is provided. The device includes: a receiving unit, configured to receive network data, the network data carrying urgent pointer information and urgent data; an acquiring unit, configured to acquire the The emergency pointer information and the emergency data; a processing unit, configured to perform data processing on the emergency data acquired by the acquisition unit according to the emergency pointer information acquired by the acquisition unit to obtain processed emergency data; A filling unit, configured to fill the message with the urgent pointer information and the processed urgent data processed by the processing unit; a sending unit, configured to forward the message.

With reference to the second aspect, in another implementation manner of the second aspect, the message is a TCP message, and the filling unit is specifically configured to: fill the urgent flag in the urgent pointer information into the TCP message In the TCP option of the text, and the urgent data start sequence number and the urgent data end position in the urgent pointer information, and the processed urgent data are filled in the urgent data field of the data area of the TCP message.

In combination with the second aspect or any of the above implementations, in another implementation of the second aspect, the message is a TCP message, and the filling unit is specifically used to: use the TCP The emergency pointer URG flag in the message is set, and the urgent data start sequence number and the urgent data end position in the urgent pointer information, as well as the processed urgent data are filled in the data area of the TCP message urgently in the data field.

With reference to the second aspect or any of the above-mentioned implementation manners, in another implementation manner of the second aspect, the padding unit is specifically configured to: set the message type identifier in the message to the The emergency flag in the urgent pointer information, the urgent data start sequence number and the urgent data end position in the urgent pointer information, and the urgent data are filled in the load of the message, and the message includes TCP packet or User Datagram Protocol UDP packet.

With reference to the second aspect or any of the above-mentioned implementation manners, in another implementation manner of the second aspect, the processing unit is specifically configured to: compress or decompress the emergency data, and The urgent data is deduplicated or restored, or the urgent data is encrypted or decrypted.

In the embodiment of the present invention, the urgent pointer information and urgent data carried in the received network data are acquired by the TCP proxy, and the urgent data is processed according to the urgent pointer information to obtain the processed urgent data, and the urgent pointer information and urgent data are filled in the message. The processed urgent data is forwarded, thereby optimizing the processing of network data and effectively improving the flexibility of data processing.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention.

Fig. 2 is a schematic flowchart of a process of a data transmission method according to an embodiment of the present invention.

Fig. 3 is a structural block diagram of a TCP proxy according to an embodiment of the present invention.

Fig. 4 is a structural block diagram of a TCP proxy according to another embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention. The method of Figure 1 is performed by a TCP proxy.

101. The Transmission Control Protocol TCP proxy receives network data sent by the server or the client, and the network data carries urgent pointer information and urgent data.

102. The TCP proxy acquires urgent pointer information and urgent data.

103. The TCP proxy performs data processing on the urgent data according to the urgent pointer information to obtain processed urgent data.

104. The TCP proxy fills the packet with urgent pointer information and processed urgent data, and forwards the packet.

In the embodiment of the present invention, the urgent pointer information and urgent data carried in the received network data are acquired by the TCP proxy, and the urgent data is processed according to the urgent pointer information to obtain the processed urgent data, and the urgent pointer information and urgent data are filled in the message. The processed urgent data is forwarded, thereby optimizing the processing of network data and effectively improving the flexibility of data processing.

Optionally, as an embodiment, in step 103, processing the urgent data includes, but is not limited to: compressing or decompressing the urgent data, deduplicating or restoring the urgent data, or encrypting or decrypting the urgent data, etc. deal with.

For example, it can be determined whether to process the urgent data according to the size of the urgent data. When it is determined according to the urgent pointer information that the length of the urgent data is greater than or equal to a certain threshold (such as a maximum segment length (Max SegmentSize, MSS)), Compress or deduplicate the urgent data. In this way, the amount of data transmission is reduced, resources can be effectively used, and the transmission rate of urgent data can be increased.

For another example, when it is determined that the length of the urgent data is less than a certain threshold according to the urgent pointer information (including the urgent flag, the starting serial number of the urgent data, and the end position of the urgent data), the urgent data can be directly forwarded at the data TCP proxy layer, and can be Optionally, urgent data does not need to be forwarded after processing common data. Therefore, it is possible to enable the client or the server to process urgent data in a timely manner.

It should be understood that the foregoing examples are only illustrative, and how the TCP proxy processes the urgent data in this embodiment of the present invention to obtain the processed urgent data is not limited.

Furthermore, normal data in the network data can be processed in parallel. Optionally, when it is found that the network data carries urgent data, the normal data in the network data can no longer be cached, and the urgent data and normal data can be processed in parallel (such as for Ordinary data is deduplicated). After step 103, emergency data and normal data can be forwarded at the same time. Of course, normal data and emergency data in the network data can also be separately processed. Therefore, ordinary data can be processed based on the processing status of emergency data, and the flexibility of data processing can be improved. This embodiment of the present invention does not limit it.

Optionally, as another embodiment, in step 104, the TCP agent may fill the message with urgent pointer information and processed urgent data according to the data forwarding manner, and forward the message. Optionally, the data forwarding mode may be the TCP option mode provided by the present invention, the improved TCP emergency mode, or the private message mode. Certainly, the data forwarding mode may also adopt the existing TCP emergency mode. It should be understood that this embodiment of the present invention does not limit it. It should also be understood that the embodiment of the present invention does not limit the form of the message, and the message may be a TCP message, or a User Datagram Protocol (UserDatagram Protocol, UDP) message, and so on.

Specifically, in the TCP option mode, the above-mentioned message is a TCP message, and the TCP proxy fills the urgent flag in the urgent pointer information into the TCP option (option) of the TCP message, and saves the urgent data in the urgent pointer information The start sequence number, the end position of the urgent data, and the processed urgent data are filled in the urgent data domain of the data area of the TCP message. In the improved TCP emergency mode, the above message is a TCP message, and the TCP proxy sets the URG flag of the urgent pointer in the TCP message (that is, indicates the urgent flag in the urgent pointer information), and the urgent data in the urgent pointer information starts The start sequence number, the end position of the urgent data, and the processed urgent data are filled in the urgent data domain of the data area of the TCP message. Further, the urgent data field in the data area of the TCP message may also include information about the position of the urgent data relative to the normal data in the data stream when the TCP proxy receives the urgent data. In the private message mode, the message can be a TCP message or a UDP message, and the message type identifier in the message is set as the urgent flag in the urgent pointer information, and the urgent data starting sequence number and urgent data in the urgent pointer information are set to The data end position and urgent data are filled in the payload of the message. For the existing TCP emergency mode, reference may be made to the prior art, which will not be repeated here.

Optionally, one or more of the foregoing data forwarding modes may be preset in the TCP proxy. The TCP proxy can select the urgent pointer information and the data forwarding mode of the urgent data according to the situation of the urgent data, or can select the urgent pointer information and the data forwarding mode of the urgent data according to the context information of the data flow. For example, when the length of the urgent data is greater than or equal to a certain threshold (such as the length of one MSS), you can choose the TCP option mode, or the private message mode, or the improved urgent mode to forward the compressed urgent data. For another example, when the length of the urgent data is less than a certain threshold (such as the length of one MSS), an improved TCP emergency mode or an existing TCP emergency mode may be selected to directly forward the urgent data.

Optionally, ordinary data may also be filled in the above message, that is, the TCP proxy forwards the urgent data and the ordinary data together. For example, when deduplication processing is performed on urgent data and received normal data in parallel, the TCP urgent mode may be selected to package and forward the deduplicated urgent data and normal data together.

If the processed network data is forwarded in the TCP emergency mode of the prior art, the transmission sequence of the network data will be changed, resulting in a change in the position of the urgent data relative to the normal data in the data stream, or even loss of the urgent data. The data forwarding mode provided by the embodiment of the present invention can clarify the transmission sequence of urgent data and the position of urgent data relative to ordinary data in a data stream, so as to avoid loss of urgent data.

In addition, the embodiment of the present invention can also encrypt the urgent data before forwarding the message, which improves the security of data transmission.

It should be noted that there may be one or more TCP agents between the client and the server in the embodiment of the present invention, each TCP agent can realize the processing and forwarding of network data, when there are multiple TCP agents between the client and the server When acting as a proxy, two adjacent TCP proxies can cooperate in advance to adopt an acceptable data forwarding method.

Embodiments of the present invention will be described in detail below in conjunction with specific examples.

Fig. 2 is a schematic flowchart of a process of a data transmission method according to an embodiment of the present invention.

201. The TCP agent receives network data.

Specifically, the receiving of network data is realized by the TCP IP stack (Stack) in the TCP proxy.

202. The TCP proxy obtains the urgent pointer and urgent data from the network data received in step 201.

Specifically, the TCP proxy layer in the TCP proxy obtains the urgent pointer and urgent data from the network data received by the TCP IP stack.

203. The TCP agent performs data processing on the urgent data to obtain the processed urgent data.

Optionally, processing the urgent data includes but is not limited to: compressing or decompressing the urgent data, deduplicating or restoring the urgent data, or encrypting or decrypting the urgent data.

For example, it can be determined whether to process the urgent data according to the size of the urgent data, and when it is determined according to the urgent pointer information that the length of the urgent data is greater than or equal to a certain threshold (such as a MSS length), the urgent data is compressed or deleted. Heavy. In this way, the amount of data transmission is reduced, resources can be effectively used, and the transmission rate of urgent data can be increased.

For another example, when it is determined according to the urgent pointer information that the length of the urgent data is less than a certain threshold, the urgent data may be forwarded directly at the data TCP proxy layer. Optionally, the urgent data does not need to be forwarded after processing the normal data. Therefore, it is possible to enable the client or the server to process urgent data in a timely manner.

It should be understood that the foregoing examples are only illustrative, and how the TCP proxy processes the urgent data in this embodiment of the present invention to obtain the processed urgent data is not limited.

Optionally, the TCP proxy can also process ordinary data in the network data (step 204). Furthermore, normal data in network data can be processed in parallel while urgent data is processed. For example, when it is found that the network data carries urgent data, the ordinary data in the network data can no longer be cached, and the urgent data and ordinary data can be processed in parallel (for example, the ordinary data is deduplicated). Of course, normal data and emergency data in the network data can also be separately processed. Therefore, ordinary data can be processed based on the processing status of emergency data, and the flexibility of data processing can be improved. This embodiment of the present invention does not limit it.

Specifically, data processing of network data (network data or emergency data) is implemented by a data processing (Data Process) module in the TCP proxy.

205. The TCP proxy selects a data forwarding mode.

Specifically, the data forwarding mode is selected by the data processing module.

The data forwarding mode may be the TCP option mode provided by the present invention, the improved TCP urgent mode, or the private message mode. For specific implementation manners, reference may be made to the foregoing, and details are not repeated here.

For example, the data forwarding method can be represented schematically (in tabular form) as follows:

The data forwarding method provided by the embodiment of the present invention can clarify the transmission sequence of urgent data and the position of urgent data relative to ordinary data in the data stream, avoid the loss of urgent data, and can also realize the encryption of urgent data to improve the efficiency of data transmission. safety.

Certainly, the data forwarding mode may also adopt the existing TCP emergency mode. It should be understood that this embodiment of the present invention does not limit it.

206. The TCP agent forwards the packet.

Specifically, the data processing module forwards the message from the TCP IP stack through the TCP proxy layer.

The packet can be a TCP packet or a UDP packet. The TCP fills the message with urgent pointer information and urgent data according to the data forwarding format selected in step 205, and forwards the message.

Optionally, ordinary data may also be filled in the above message, that is, the TCP proxy forwards the urgent data and the ordinary data together. For example, when deduplication processing is performed on urgent data and received normal data in parallel, the TCP urgent mode may be selected to package and forward the deduplicated urgent data and normal data together.

Optionally, the TCP proxy can also forward common data and urgent data separately. It should be understood that this embodiment of the present invention does not limit it.

Fig. 3 is a structural block diagram of a TCP proxy according to an embodiment of the present invention. The TCP proxy 300 in FIG. 3 includes a receiving unit 301 , an acquiring unit 302 , a processing unit 303 , a filling unit 304 and a sending unit 305 .

The receiving unit 301 is configured to receive network data, where the network data carries urgent pointer information and urgent data.

The obtaining unit 302 is configured to obtain the urgent pointer information and the urgent data received by the receiving unit 302 .

The processing unit 303 is configured to perform data processing on the urgent data acquired by the acquiring unit 302 according to the urgent pointer information acquired by the acquiring unit 302 to obtain processed urgent data.

The filling unit 304 is configured to fill the message with the urgent pointer information acquired by the acquiring unit 302 and the processed urgent data processed by the processing unit 303 .

The sending unit 305 is configured to forward the message.

In the embodiment of the present invention, the urgent pointer information and urgent data carried in the received network data are acquired by the TCP proxy, and the urgent data is processed according to the urgent pointer information to obtain the processed urgent data, and the urgent pointer information and urgent data are filled in the message. The processed urgent data is forwarded, thereby optimizing the processing of network data and effectively improving the flexibility of data processing.

The TCP proxy 300 can implement the embodiments shown in FIG. 1 and FIG. 2 , so to avoid repetition, it will not be described in detail.

Optionally, as an embodiment, the filling unit 304 may also be configured to fill the message with urgent pointer information and processed urgent data according to the data forwarding manner. Optionally, the data forwarding mode may be the TCP option mode, the improved TCP emergency mode, or the private message mode provided by the present invention.

Further, the data forwarding mode is the TCP option mode and the message is a TCP message, and the filling unit 304 is specifically configured to: fill the urgent flag in the urgent pointer information into the TCP option of the TCP message, and fill the urgent flag in the urgent pointer information The start sequence number of the urgent data, the end position of the urgent data, and the processed urgent data are filled in the urgent data field of the data area of the TCP message.

The data forwarding mode is an improved TCP emergency mode and the message is a TCP message, and the filling unit 304 is specifically used to: set the urgent pointer URG flag in the TCP message, set the urgent data start sequence number and the urgent data starting sequence number in the urgent pointer information The end position of the urgent data and the processed urgent data are filled in the urgent data field of the data area of the TCP message.

The data forwarding mode is a private message mode, and the filling unit 304 is specifically used to: set the message type identifier in the message as the urgent flag in the urgent pointer information, and set the urgent data start sequence number and the urgent data end position in the urgent pointer information , and the urgent data is filled in the payload of the message, and the message may be a TCP message or a UDP message.

The data forwarding method provided by the embodiment of the present invention can clarify the transmission sequence of urgent data and the position of urgent data relative to ordinary data in the data stream, avoid the loss of urgent data, and can also realize the encryption of urgent data to improve the efficiency of data transmission. safety.

Certainly, the data forwarding mode may also adopt the existing TCP emergency mode. It should be understood that this embodiment of the present invention does not limit it.

Optionally, as another embodiment, the processing unit 303 is specifically configured to: compress or decompress urgent data, deduplicate or restore urgent data, or encrypt or decrypt urgent data. Reference may be made to the above for specific embodiments, and details are not repeated here. It should be understood that how the TCP agent processes urgent data in this embodiment of the present invention is not limited.

Embodiments of the present invention further provide device embodiments for implementing the steps and methods in the above method embodiments. FIG. 4 is a structural block diagram of a TCP proxy according to another embodiment of the present invention. In this embodiment, a device 400 includes a processor 401 , a memory 402 , a sender 403 and a receiver 404 . The processor 401 controls the operation of the device 400, and the processor 401 may also be referred to as a CPU. The memory 402 may include read-only memory and random-access memory, and provides instructions and data to the processor 401 . A portion of memory 402 may also include non-volatile random access memory (NVRAM). The processor 401, the memory 402, the transmitter 403 and the receiver 404 are coupled together through a bus system 410, wherein the bus system 410 includes a power bus, a control bus and a status signal bus in addition to a data bus. However, for clarity of illustration, the various buses are labeled as bus system 410 in the figure.

The method disclosed in the foregoing embodiments of the present invention may be applied to the foregoing device 400 . Wherein, the processor 401 may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 401 or instructions in the form of software.

The receiver 404 is configured to receive network data, where the network data carries urgent pointer information and urgent data.

The processor 401 is used to obtain the urgent pointer information and urgent data received by the receiver 404; it is also used to perform data processing on the obtained urgent data according to the obtained urgent pointer information to obtain the processed urgent data; it is also used to include in the message Fill in the acquired urgent pointer information and processed urgent data.

The sender 403 is configured to forward the message.

In the embodiment of the present invention, the urgent pointer information and urgent data carried in the received network data are acquired by the TCP proxy, and the urgent data is processed according to the urgent pointer information to obtain the processed urgent data, and the urgent pointer information and urgent data are filled in the message. The processed urgent data is forwarded, thereby optimizing the processing of network data and effectively improving the flexibility of data processing.

The device 400 can implement the embodiments shown in FIG. 1 and FIG. 2 , so to avoid repetition, no detailed description is given here.

Optionally, as an embodiment, the processor 401 may also be configured to fill the packet with urgent pointer information and processed urgent data according to a data forwarding manner. Optionally, the data forwarding mode may be the TCP option mode, the improved TCP emergency mode, or the private message mode provided by the present invention.

Further, the data forwarding mode is the TCP option mode and the message is a TCP message, and the processor 401 is specifically configured to: fill the urgent flag in the urgent pointer information into the TCP option of the TCP message, and fill the urgent flag in the urgent pointer information The start sequence number of the urgent data, the end position of the urgent data, and the processed urgent data are filled in the urgent data field of the data area of the TCP message.

The data forwarding mode is an improved TCP emergency mode and the message is a TCP message, and the processor 401 is specifically used to: set the urgent pointer URG flag in the TCP message, set the urgent data start sequence number and the urgent data starting sequence number in the urgent pointer information The end position of the urgent data and the processed urgent data are filled in the urgent data field of the data area of the TCP message.

The data forwarding mode is a private message mode, and the processor 401 is specifically used to: set the message type identifier in the message as the urgent flag in the urgent pointer information, set the urgent data start sequence number and the urgent data end position in the urgent pointer information , and the urgent data is filled in the payload of the message, and the message may be a TCP message or a UDP message.

The data forwarding method provided by the embodiment of the present invention can clarify the transmission sequence of urgent data and the position of urgent data relative to ordinary data in the data stream, avoid the loss of urgent data, and can also realize the encryption of urgent data to improve the efficiency of data transmission. safety.

Certainly, the data forwarding mode may also adopt the existing TCP emergency mode. It should be understood that this embodiment of the present invention does not limit it.

Optionally, as another embodiment, the processor 401 is specifically configured to: compress or decompress urgent data, deduplicate or restore urgent data, or encrypt or decrypt urgent data. Reference may be made to the above for specific embodiments, and details are not repeated here. It should be understood that how the TCP agent processes urgent data in this embodiment of the present invention is not limited.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, and other media that can store program codes. .

Claims (4)

1. A data transmission method, characterized in that, comprising: The transmission control protocol TCP agent receives network data, and the network data carries urgent pointer information and urgent data; The TCP proxy obtains the urgent pointer information and the urgent data; The TCP agent performs data processing on the urgent data according to the urgent pointer information to obtain processed urgent data; The TCP proxy fills the urgent pointer information and the processed urgent data in the message, and forwards the message; The data processing of the emergency data includes: compression, deduplication or encryption; Wherein, the TCP proxy fills the urgent pointer information and the processed urgent data in the message, including: The TCP agent sets the message type identifier in the message as the urgent flag in the urgent pointer information, sets the urgent data start sequence number and the urgent data end position in the urgent pointer information, and the urgent Data is filled in the payload of the message, and the message includes a TCP message or a User Datagram Protocol UDP message; If the message is a TCP message, the TCP proxy fills the message with the urgent pointer information and the processed urgent data, including: The TCP agent fills the urgent flag in the urgent pointer information into the TCP option of the TCP message, and uses the urgent data start sequence number and the urgent data end position in the urgent pointer information, and the The processed urgent data is filled in the urgent data domain of the data area of the TCP message; or The TCP proxy sets the urgent pointer URG flag in the TCP message, and fills the urgent data start sequence number and urgent data end position in the urgent pointer information, as well as the processed urgent data in the In the urgent data field of the data area of the above-mentioned TCP message. 2. The method according to claim 1, wherein the emergency data field of the data area of the TCP message also includes that when the TCP agent receives the urgent data, the urgent data is included in the data stream. Information about the location relative to normal data. 3. The method according to claim 1 or 2, wherein the network data also carries normal data and the packet also includes the normal data. 4. A transmission control protocol TCP proxy, characterized in that, comprising: a receiving unit, configured to receive network data, the network data carrying urgent pointer information and urgent data; an acquiring unit, configured to acquire the urgent pointer information and the urgent data received by the receiving unit; a processing unit, configured to perform data processing on the urgent data obtained by the obtaining unit according to the urgent pointer information obtained by the obtaining unit to obtain processed urgent data; a filling unit, configured to fill the message with the urgent pointer information and the processed urgent data processed by the processing unit; a sending unit, configured to forward the message; The processing unit is specifically configured to compress, deduplicate or encrypt the urgent data; Wherein, the filling unit is specifically used for: Set the message type identifier in the message as the emergency flag in the urgent pointer information, fill the urgent data start sequence number and urgent data end position in the urgent pointer information, and the urgent data in the In the load of the message, the message includes a TCP message or a User Datagram Protocol UDP message; or, If the message is a TCP message, the urgent flag in the urgent pointer information is filled in the TCP option of the TCP message, and the urgent data start sequence number and urgent data in the urgent pointer information are end position, and the processed urgent data is filled in the urgent data domain of the data area of the TCP message; or the urgent pointer URG flag in the TCP message is set, and the urgent pointer information in the The start sequence number of the urgent data, the end position of the urgent data, and the processed urgent data are filled in the urgent data field of the data area of the TCP message.