WO2021218520A1 - Method and apparatus for establishing tcp connection, and server - Google Patents

Abstract

Provided are a method and apparatus for establishing a TCP connection, and a server. The method comprises: if a connection request from a client is received, sending a response signal corresponding to the connection request to the client, wherein the connection request carries a client address of the client; acquiring a pre-stored communication time delay corresponding to the client address; furthermore, starting a preset timer, and setting a timeout value of the timer according to the communication time delay; and establishing a TCP connection with the client on the basis of the timeout value. In the method, a timeout value of a started timer is set by means of a pre-stored communication time delay between a server address and a corresponding client address, and when a network state is relatively poor, the situation where a server spends more time waiting for a reply from a client as the timeout value increases is prevented, thereby increasing the establishment speed of a TCP connection between the client and the server.

Description

Method, device and server for establishing TCP connection

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on April 30, 2020, the application number is 202010369814.8, and the invention title is "Method, Device and Server for Establishing a TCP Connection", the entire content of which is incorporated herein by reference Applying.

Technical field

This application relates to the field of network technology, and in particular to a method, device and server for establishing a TCP connection.

Background technique

When the client establishes a TCP (Transmission Control Protocol) connection with the server, the client first sends a SYN (Synchronize Sequence Numbers) signal to the server. After receiving the SYN signal, the server sends the SYN signal to the client. The end sends a SYN signal and an ACK (Acknowledge character) signal, and at the same time the server starts a timer and sets the timeout value of the timer. The timeout value is usually set according to the empirical value of RTT (Round-Trip Time). If the timer reaches the timeout value, the server has not received the ACK signal returned by the client. At this time, the server repeatedly sends the SYN signal and ACK signal to the client, and starts the timer again and sets the timer's timeout Value, the timeout value is usually set according to the exponential value of the last timeout value. In the case of poor network status, the server needs to send multiple SYN signals and ACK signals. At this time, the timeout value increases exponentially, and the timeout value becomes larger and larger, which causes the server to wait for the client to reply more time. The longer it comes, the slower the connection between the client and the server is established.

Summary of the invention

In view of this, the purpose of this application is to provide a method, device and server for establishing a TCP connection, so as to increase the speed of establishing a connection between the client and the server.

In the first aspect, an embodiment of the present application provides a method for establishing a TCP connection. The method includes: if a connection request from a client is received, sending a response signal corresponding to the connection request to the client; wherein the connection request carries the client Obtain the pre-saved communication delay corresponding to the client address; start the preset timer, and set the timeout value of the timer according to the communication delay; based on the timeout value, establish a TCP connection with the client.

In the second aspect, an embodiment of the present application provides a device for establishing a TCP connection, the device comprising: a signal sending module configured to send a response signal corresponding to the connection request to the client if a connection request from the client is received; wherein, The connection request carries the client address of the client; the delay acquisition module is set to obtain the pre-saved communication delay corresponding to the client address; the timeout value setting module is set to start the preset timer, which is set according to the communication delay The timeout value of the timer; the TCP connection module is set to establish a TCP connection with the client based on the timeout value.

In a third aspect, an embodiment of the present application provides a server, including a processor and a memory. The memory stores machine-executable instructions that can be executed by the processor. The processor executes the machine-executable instructions to implement any one of the embodiments of the first aspect. The method of establishing a TCP connection.

In a fourth aspect, embodiments of the present application provide a machine-readable storage medium that stores machine-executable instructions. When the machine-executable instructions are called and executed by a processor, the machine-executable instructions prompt processing The device implements the method for establishing a TCP connection in any one of the embodiments of the first aspect.

In a fifth aspect, the embodiments of the present application provide a computer program product containing instructions. When the computer program product containing instructions runs on a computer, the computer executes the steps of the method for establishing a TCP connection provided in the embodiments of the present application.

In a sixth aspect, an embodiment of the present application provides a computer program, which when the computer program runs on a computer, causes the computer to execute the steps of the method for establishing a TCP connection provided by the embodiment of the present application.

The embodiments of the application bring the following beneficial effects:

The embodiments of the application provide a method, device and server for establishing a TCP connection. If a connection request from a client is received, a response signal corresponding to the connection request is sent to the client; the connection request carries the client address of the client. ; Obtain the pre-saved communication delay corresponding to the client address; at the same time, start the preset timer, and set the timeout value of the timer according to the communication delay; based on the timeout value, establish a TCP connection with the client. In this method, the timeout value of the started timer is set through the communication delay between the pre-stored server address and the corresponding client address. In the case of poor network status, the timeout value is prevented from becoming larger and larger. The time for the client to wait for the reply from the client is getting longer and longer, which improves the speed of establishing a TCP connection between the client and the server.

Other features and advantages of the embodiments of the present application will be described in the following description, and part of them will become obvious from the description, or be understood by implementing the present application. The purpose and other advantages of the embodiments of the present application are realized and obtained by the structures specifically pointed out in the description, claims and drawings.

In order to make the above-mentioned objectives, features and advantages of the present application more obvious and understandable, preferred embodiments are specifically described below in conjunction with the accompanying drawings.

Description of the drawings

In order to more clearly describe the technical solutions of the embodiments of the present application and related technologies, the following briefly introduces the drawings that need to be used in the embodiments and related technologies. Obviously, the drawings in the following description are only of the present application. For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

FIG. 1 is a flowchart of a method for establishing a TCP connection provided by an embodiment of the application;

2 is a flowchart of another method for establishing a TCP connection provided by an embodiment of the application;

FIG. 3 is a flowchart of a method for obtaining communication delay according to an embodiment of the application;

FIG. 4 is a flowchart of another method for obtaining communication delay according to an embodiment of the application;

FIG. 5 is a flowchart of another method for obtaining communication delay according to an embodiment of this application;

FIG. 6 is a flowchart of another method for establishing a TCP connection provided by an embodiment of the application;

FIG. 7 is a schematic structural diagram of an apparatus for establishing a TCP connection provided by an embodiment of the application;

FIG. 8 is a schematic structural diagram of a server provided by an embodiment of the application.

Detailed ways

In order to make the purpose, technical solutions, and advantages of the present application clearer, the following further describes the present application in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

At present, when the client establishes a TCP connection with the server, the client first sends a SYN signal to the server. After receiving the SYN signal, the server sends a SYN signal and an ACK signal to the client. At the same time, the server starts the timer and sets it. The timeout value of the timer, the timeout value is usually set according to the experience value of RTT. If the timer reaches the timeout value, but the ACK signal returned by the client has not been received, the server repeatedly sends the SYN signal and ACK signal to the client, and starts the timer again and sets the timer's timeout value. The timeout value is usually set according to the exponential value of the last timeout value. In the case of poor network status, the server needs to send multiple SYN signals and ACK signals. At this time, the timeout value increases exponentially, and the timeout value becomes larger and larger, which causes the server to wait for the client to reply more time. The longer it comes, the slower the connection between the client and the server is established.

Based on this, the method, device, and server for establishing a TCP connection provided by the embodiments of this application can be applied to the network connections of clients such as computers and mobile phones, that is, the method provided in the embodiments of this application can be applied to the client In the process of establishing a TCP connection with the server. In order to facilitate the understanding of this embodiment, a method for establishing a TCP connection disclosed in the embodiment of this application is first introduced in detail.

First, the embodiment of the present application provides a method for establishing a TCP connection. The method can be applied to the server. As shown in FIG. 1, the method includes the following steps:

Step S102, if a connection request from the client is received, a response signal corresponding to the connection request is sent to the client. Among them, the client address of the client is carried in the connection request.

The foregoing client may be a mobile terminal device such as a computer and a mobile phone, and the foregoing server may be a device such as a server. For example, the aforementioned client may be a desktop computer, or a mobile terminal device such as a mobile phone or a tablet computer.

The connection request may be a SYN signal sent by the client, and the response signal may be a SYN signal and an ACK signal sent by the server to notify the client to confirm receipt of the connection request signal. The client address of the above client may be the IP (Internet Protocol, Internet Protocol) address of the client. In the embodiment of the present application, the IP address of the client is referred to as the client address for short.

In an embodiment of the present application, when a TCP connection is established, the client first sends a connection request SYN signal to the server, and the SYN signal includes the IP address of the client. After the server receives the SYN signal, it must confirm the SYN signal of the client, and the server also sends a response signal, which includes the SYN signal and the ACK signal.

Step S104: Obtain a pre-saved communication delay corresponding to the client address.

The above-mentioned communication delay can be RTT (Round-Trip Time), which is also an important performance indicator in a computer network. It means that from the server sending data to the server receiving the confirmation signal from the client, a total of The time delay experienced. Since the connection request carries the client address of the client, when the server and the client communicate and connect, the calculated RTT has the corresponding server address and client address of the connection, so the calculated RTT can be obtained Set the above-mentioned pre-saved communication delay.

Step S106: Start a preset timer, and set the timeout value of the timer according to the communication delay.

In the above step S104, the server has obtained the communication delay corresponding to the client address, and the server can set the timeout value of the preset timer according to the communication delay, and start the preset timer.

Usually when the server sends the SYN signal and the ACK signal, a preset timer is started. The preset timer can record the time from when the server sends the signal to when the signal is received.

In the embodiment of the present application, the preset timer is referred to as a timer for short. Through the timing of the above-mentioned timer, the length of time from the moment when the server sends the response signal to the current moment can be determined. If the server receives the ACK signal returned by the client before the timer expires, when the server receives the ACK signal, the value of the timer can indicate: from the server sending the response signal to receiving the ACK signal returned by the client The time between.

The above-mentioned timeout value can be set according to the calculated RTT during the communication connection between the server and the client before, that is, the communication delay setting. Wherein, the communication delay is the communication delay corresponding to the client address stored in advance in step S104.

Step S108, based on the timeout value, establish a TCP connection with the client.

In an embodiment of the present application, after the server starts the preset timer, if the timer time exceeds the timeout value, the server will send a response signal to the client again until the TCP connection is established with the client.

In one embodiment, if the server does not receive the ACK signal from the client after the timer expires, the server sends a response signal to the client again, and while sending the response signal to the client, restarts the aforementioned preset timing Device. Before the server establishes a TCP connection with the client, the steps of sending a response signal to the client again and restarting the timer are repeated cyclically until the server establishes a TCP connection with the client.

In addition, after the server has sent multiple response signals and the timer expires, the number of connections exceeds the preset value, or the accumulated timing time of the timer exceeds the preset time, the connection between the server and the client fails.

In one embodiment, the number of connections refers to the number of times the server sends a response signal to the client after receiving the connection request from the client. The preset value may be a preset number threshold. If the number of connections exceeds the preset number threshold, the server determines that the connection with the client fails.

The embodiment of the application provides a method for establishing a TCP connection. If a connection request from a client is received, a response signal corresponding to the connection request is sent to the client; the connection request carries the client address of the client; and the pre-saved address is obtained. The communication delay corresponding to the client address is started; the preset timer is started at the same time, and the timeout value of the timer is set according to the communication delay; based on the timeout value, a TCP connection is established with the client. In this method, the timeout value of the started timer is set through the communication delay between the pre-stored server address and the corresponding client address. In the case of poor network status, the timeout value is prevented from becoming larger and larger. The time for the client to wait for the reply from the client is getting longer and longer, which improves the speed of establishing a TCP connection between the client and the server.

The embodiment of the present application provides another method for establishing a TCP connection, which is implemented on the basis of the method in the above embodiment; this embodiment focuses on the specific implementation of the step of obtaining the pre-saved communication delay corresponding to the client address The process (implemented by step S204), as shown in Figure 2, the method includes the following steps:

Step S202, if a connection request from the client is received, a response signal corresponding to the connection request is sent to the client. Among them, the client address of the client is carried in the connection request.

Step S204: Obtain the communication delay corresponding to the client address from the pre-established database.

The foregoing pre-established database may store multiple server addresses and multiple client addresses corresponding to multiple communication delays when a connection is established.

The database is established in the following manner: acquiring the historical communication records of the client corresponding to the client address, extracting the communication delay from the historical communication record, and storing the extracted communication delay corresponding to the client address in the database.

In one embodiment, if the server obtains multiple historical communication records corresponding to the client address, and the multiple historical communication records correspond to different servers, the communication delay is extracted from each historical communication record. And the extracted communication delay, the client address and the server address corresponding to the historical communication record are correspondingly saved in the database.

For multiple historical communication records between the client address and the same server address, the server can extract the communication delay from the latest historical communication record among the multiple historical communication records, or extract the smallest one from the multiple historical communication records Communication delay. The server then stores the extracted communication delay, client address, and server address in the database.

Since the connection request carries the client address of the client, the server can obtain its historical communication record through the client address, for example, the communication record of the client with the server in the past month. In one embodiment, when a communication connection is established historically between the server and the client, the connection request sent by the client to the server carries the client address, so the historical communication record stored in the server includes the historical communication Record the corresponding client address. Furthermore, when the above-mentioned database is established on the server, the client's historical communication records can be obtained through the client's address.

The aforementioned communication record may include information such as communication delay when establishing a connection with one or more servers. The server may extract the communication delay when the client establishes a connection with the current server from the historical communication record, and save the extracted communication delay corresponding to the client address in the database.

For the above step S204, referring to the flowchart of a method for obtaining communication delay shown in FIG. 3, the specific implementation process of the step of obtaining the communication delay corresponding to the client address from the pre-established database, the method includes the following step:

Step S301: If the communication delay corresponding to the client address cannot be obtained from the database, determine the first area range to which the client address belongs.

The first area range to which the client address belongs may be the geographic location of the geographic address corresponding to the client address. For example, it may be the area where the geographic address corresponding to the client address is located, within a range of one hundred meters, that is, the geographic address corresponding to the client address is the center and a radius of one hundred meters.

Step S302: Obtain the communication delay corresponding to the client address within the first area from the database, and determine the communication delay as the communication delay corresponding to the client address of the client.

If the server obtains the communication delay corresponding to the client address through the first area range, the communication delay may be determined as the communication delay corresponding to the client address of the client. At the same time, the server can also save the communication delay corresponding to the client address in the database to meet the richness and real-time nature of the database.

In an embodiment, the server can determine the IP addresses of other clients within the first area. Furthermore, the server obtains the communication delay corresponding to the IP address of the other client from the database, and uses the obtained communication delay as the communication delay of the client currently sending the connection request. In addition, the server can store the acquired communication delay in the database corresponding to the client address of the client currently sending the connection request.

Further, the aforementioned database also stores: the server address of the server communicating with the client corresponding to the client address in the historical communication record. Among them, the server address, client address, and communication delay are stored correspondingly. Referring to the flowchart of another method for obtaining communication delay shown in FIG. 4, the specific implementation process of the step of obtaining the communication delay corresponding to the client address from the pre-established database, the method includes the following steps:

Step S401: Obtain the server address of the server that has received the connection request.

Step S402: Obtain the communication delay corresponding to the client address and the server address from the pre-established database, and determine the communication delay as the communication delay corresponding to the client address of the client.

The communication delay represents the delay when the server establishes a connection with the client, so the communication delay stored in the database not only needs to have a corresponding client address, but also a server address corresponding to it. In the embodiment of the present application, the server can directly obtain the server address of the server that receives the connection request, and then obtain the communication delay corresponding to the client address and the obtained server address from the pre-established database, and set the The communication delay is determined as the communication delay corresponding to the client address of the client.

In an embodiment, the server address may be the IP address of the server, and if the server is a server, the server address is the IP address of the server. After the server receives the connection request from the client, it can obtain its own IP address. Then the server obtains the communication delay corresponding to the client address and its own IP address from the pre-established database, and determines the obtained communication delay as the communication delay corresponding to the client address of the client.

For the above step S402, referring to the flowchart of another method for obtaining communication delay shown in FIG. 5, the specific implementation process of the steps of obtaining the communication delay corresponding to the client address and the server address from the pre-established database is shown in FIG. As shown in Figure 5, the method includes the following steps:

Step S501: If the communication delay corresponding to the client address and the server address cannot be obtained from the database, determine the second area range to which the client address belongs.

The second area range to which the client address belongs may be the geographic location of the geographic address corresponding to the client address. For example, it may be the area where the geographic address corresponding to the client address is located, within a range of one hundred meters, that is, the geographic address corresponding to the client address is the center and a radius of one hundred meters.

Step S502: Obtain the communication delay corresponding to the server address and the client address in the second area from the database.

After the server obtains the addresses of other clients in the second area, it can search the database for the communication delays corresponding to the server addresses and the client addresses in the second area.

In an embodiment, the server can determine the IP addresses of other clients in the second area. Furthermore, the server obtains the communication delay corresponding to the server address and the IP address of the other client from the database, and uses the obtained communication delay as the communication delay of the client currently sending the connection request. In addition, the server may correspondingly save the acquired communication delay, server address, and client address of the client currently sending the connection request in the database.

Step S503: If the communication delay corresponding to the server address and the client address within the second area range cannot be obtained from the database, determine the third area range to which the server address belongs.

The third area range to which the server address belongs may be the geographic location of the geographic address corresponding to the server address. For example, it may be the area where the geographic address corresponding to the server address is located, within a range of one hundred meters, that is, the geographic address corresponding to the server address is the center and a radius of one hundred meters.

Step S504: Obtain the communication delay corresponding to the client address in the second area and the server address in the third area from the database.

After obtaining the addresses of other clients in the second area and the IP addresses of other servers in the third area, the server can obtain the corresponding communication delay from the database.

In one embodiment, the server can determine the IP addresses of other clients in the second area, and determine the IP addresses of other servers in the third area. Furthermore, the server obtains the communication delay corresponding to the IP address of the other client and the IP address of the other server from the database, and uses the obtained communication delay as the communication delay of the client currently sending the connection request. In addition, the server may correspondingly save the acquired communication delay, the server address currently receiving the connection request, and the client address currently sending the connection request in the database.

Step S206: Start a preset timer, and set the timeout value of the timer according to the communication delay.

Step S208, based on the timeout value, establish a TCP connection with the client.

In addition, the above method also includes the implementation process of the database update step, including:

If the updated historical communication record of the client corresponding to the client address is obtained, the updated communication delay is extracted from the updated historical communication record;

If the updated communication delay is less than the communication delay corresponding to the client address recorded in the database, the updated communication delay corresponding to the client address is saved in the database.

Usually the same client may have multiple communication records with the same server. If the communication delay between the same client and the server has been stored in the database, and then the client and the server communicate again, this The time server will update the communication delay of this time to the history record. At the same time, the server compares the updated communication delay with the historical communication delay previously saved in the database. If the updated communication delay is less than the communication delay corresponding to the client address recorded in the database, the server saves the updated communication delay corresponding to the client address in the database to ensure the real-time performance of the database. In addition, if the updated communication delay is greater than the communication delay corresponding to the client address recorded in the database, the server does not perform any processing.

In this method, the corresponding communication delay is extracted through the client's historical communication records; the database is established according to the client address, server address and the corresponding communication delay; the database is obtained from the client that is establishing a connection The communication delay corresponding to the address and the server address is used to set the timeout value of the started timer, that is, to configure the acquired communication delay as the timeout value of the timer by configuring the timer. In the case of poor network status, it avoids the situation that the server waits for the client to reply longer and longer due to the increasing timeout value, and improves the speed of establishing the TCP connection between the client and the server.

The embodiment of this application provides another method for establishing a TCP connection, which is implemented on the basis of the method in the above-mentioned embodiment; this embodiment focuses on the specific implementation process of establishing a TCP connection with the client based on the timeout value (specifically (Implemented through steps S608-S610), as shown in Figure 6, the method includes the following steps:

Step S602, if a connection request from the client is received, a response signal corresponding to the connection request is sent to the client. Among them, the client address of the client is carried in the connection request.

Step S604: Obtain a pre-saved communication delay corresponding to the client address.

Step S606: Start a preset timer, and set the timeout value of the timer according to the communication delay.

Step S608: When the time duration of the timer is less than the timeout value, the response signal returned by the client is received, and it is determined that the TCP connection with the client is successfully established.

When the server sends the response signal corresponding to the connection request to the client, the preset timer is started. The timer keeps counting until the server receives the connection confirmation signal sent by the client. In the case that the timer duration is less than the timeout value, the server receives the connection confirmation signal sent by the client, and the timer stops timing, and at the same time, it is determined that the TCP connection with the client is successfully established.

Step S610, if the timer duration reaches the timeout value, the response signal returned by the client is not received, continue to perform the step of sending the response signal corresponding to the connection request to the client until the response signal returned by the client is received, or Meet the preset conditions.

If the timer duration reaches the timeout value and the server does not receive the connection confirmation signal sent by the client, the timer will stop timing. Then the server will continue to send the response signal corresponding to the connection request to the client, and at the same time start the timer again, until the server receives the response signal returned by the client, it stops timing. Or, in the case that the server has not received the response signal returned by the client, after meeting the preset condition, the connection is stopped and the connection failure is displayed.

The preset condition includes: after receiving the connection request, the number of times the response signal is sent reaches the preset number threshold, or the time interval between the current time and the first time the response signal is sent meets the preset time threshold.

The above-mentioned frequency threshold and time threshold may be set according to the historical communication records of the specific client. For example, the frequency threshold may be 10, 15, etc., and the time threshold may be 1 minute, 5 minutes, etc. In the embodiment of the present application, after receiving the connection request, the server sends a response signal to the client, and starts a timer to start counting. If the time duration reaches the timeout value, the server does not receive the connection confirmation signal sent by the client, the server will send a response signal to the client again, until the number of times the response signal is sent reaches the preset threshold, then the connection will be stopped , And show that the connection failed. Or, if the time duration reaches the timeout value, the server does not receive the connection confirmation signal sent by the client, the server will send a response signal to the client again, and start the timer again to start timing until the current time is equal to the first When the time interval for sending the reply signal meets the preset time threshold, the connection is stopped and the connection failure is displayed.

In this method, by comparing the timing duration of the timer with the timeout value, when the timing duration is less than the timeout value, the connection is directly established; when the timing duration is greater than the timeout value, the timer is restarted and the preset is set Condition, terminate the connection in time, in the case of poor network status, avoid the situation that the server waits for the reply from the client to be longer and longer due to the increasing timeout value, and improves the establishment between the client and the server The speed of the TCP connection.

Corresponding to the foregoing embodiment of the method for establishing a TCP connection, an embodiment of the present application also provides a device for establishing a TCP connection. As shown in FIG. 7, the device includes:

The signal sending module 71 is configured to send a response signal corresponding to the connection request to the client if a connection request from the client is received. Among them, the client address of the client is carried in the connection request.

The delay acquiring module 72 is configured to acquire a pre-saved communication delay corresponding to the client address.

The timeout value setting module 73 is configured to start a preset timer, and set the timeout value of the timer according to the communication delay.

The TCP connection module 74 is set to establish a TCP connection with the client based on the timeout value.

In an embodiment of the present application, the above-mentioned delay obtaining module 72 is configured to obtain the communication delay corresponding to the client address from a pre-established database. The database is established in the following manner: acquiring the historical communication records of the client corresponding to the client address, extracting the communication delay from the historical communication record, and storing the extracted communication delay corresponding to the client address in the database.

In an embodiment of the present application, the above-mentioned delay obtaining module 72 is configured to: if the communication delay corresponding to the client address cannot be obtained from the database, determine the first area range to which the client address belongs; obtain from the database The communication delay corresponding to the client address in the first area is determined as the communication delay corresponding to the client address of the client.

In an embodiment of the present application, the aforementioned database also stores: the server address of the server communicating with the client corresponding to the client address in the historical communication record; the server address, the client address, and the communication delay Corresponding to save.

In an embodiment of the present application, the above-mentioned delay obtaining module 72 is configured to: obtain the server address of the server that receives the connection request; obtain the communication time corresponding to the client address and the server address from a pre-established database. Delay, determine the communication delay as the communication delay corresponding to the client address of the client.

In an embodiment of the present application, the above-mentioned delay obtaining module 72 is configured to determine the second area range to which the client address belongs if the communication delay corresponding to the client address and the server address cannot be obtained from the database; Obtain the communication delay corresponding to the server address and the client address in the second area from the database; if the communication delay corresponding to the server address and the client address in the second area cannot be obtained from the database , Determine the third area range to which the server address belongs; obtain the communication delay corresponding to the client address in the second area range and the server address in the third area range from the database.

In an embodiment of the present application, the above-mentioned apparatus further includes a database update module, configured to extract the updated communication delay from the updated historical communication record if the updated historical communication record of the client corresponding to the client address is obtained; If the updated communication delay is less than the communication delay corresponding to the client address recorded in the database, the updated communication delay corresponding to the client address is saved in the database.

In an embodiment of the present application, the above-mentioned TCP connection module 74 is set to: when the timer duration is less than the timeout value, the response signal returned by the client is received, and it is determined that the TCP connection with the client is successfully established; When the timing period reaches the timeout value, no response signal returned by the client is received, and the step of sending the response signal corresponding to the connection request to the client is continued until the response signal returned by the client is received or the preset condition is met. The preset condition includes: after receiving the connection request, the number of times the response signal is sent reaches the preset number threshold, or the time interval between the current time and the first time the response signal is sent meets the preset time threshold.

The embodiment of the application provides a device for establishing a TCP connection. If a connection request from a client is received, it sends a response signal corresponding to the connection request to the client; the connection request carries the client address of the client; and obtains the pre-saved The communication delay corresponding to the client address is started; the preset timer is started at the same time, and the timeout value of the timer is set according to the communication delay; based on the timeout value, a TCP connection is established with the client. In this method, the timeout value of the started timer is set through the communication delay between the pre-stored server address and the corresponding client address. In the case of poor network status, the timeout value is prevented from becoming larger and larger. The time for the client to wait for the reply from the client is getting longer and longer, which improves the speed of establishing a TCP connection between the client and the server.

The device for establishing a TCP connection provided by the embodiment of the present application has the same technical features as the method for establishing a TCP connection provided by the foregoing embodiment, so it can also solve the same technical problem and achieve the same technical effect.

An embodiment of the present application also provides a server. As shown in FIG. 8, the server includes a processor 80 and a memory 81. The memory 81 stores machine-executable instructions that can be executed by the processor 80. The processor 80 executes the machine The instructions can be executed to implement the above-mentioned method of establishing a TCP connection.

Further, the server shown in FIG. 8 further includes a bus 82 and a communication interface 83, and the processor 80, the communication interface 83, and the memory 81 are connected through the bus 82.

The memory 81 may include a high-speed random access memory (RAM, Random Access Memory), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 83 (which may be wired or wireless), and the Internet, a wide area network, a local network, a metropolitan area network, etc. may be used. The bus 82 may be an ISA bus, a PCI bus, an EISA bus, or the like. The bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of presentation, only one bidirectional arrow is used in FIG. 8, but it does not mean that there is only one bus or one type of bus.

The processor 80 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 80 or instructions in the form of software. The aforementioned processor 80 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP), etc.; it may also be a digital signal processor (Digital Signal Processor, DSP for short), etc. ), Application Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 81, and the processor 80 reads the information in the memory 81, and completes the steps of the method of the foregoing embodiment in combination with its hardware.

The embodiment of the present application also provides a machine-readable storage medium, the machine-readable storage medium stores machine-executable instructions, when the machine-executable instructions are called and executed by the processor, the machine-executable instructions prompt the processor The foregoing method for establishing a TCP connection is implemented. For specific implementation, please refer to the method embodiment, which will not be repeated here.

The embodiments of the present application also provide a computer program product, including a computer-readable storage medium storing program code, and instructions included in the program code can be used to execute the method in the previous method embodiment. For specific implementation, please refer to the method embodiment. I won't repeat them here.

The embodiments of the present application also provide a computer program, which when running on a computer, causes the computer to execute any method for establishing a TCP connection in the above-mentioned embodiments.

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

In addition, in the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. , Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those skilled in the art, the specific meaning of the above-mentioned terms in this application can be understood under specific circumstances.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several The 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 the various embodiments of the present application. 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 disks or optical disks and other media that can store program codes. .

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be understood as a limitation of this application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

Finally, it should be noted that the above examples are only specific implementations of the application, to illustrate the technical solutions of the application, but not to limit it. The scope of protection of the application is not limited thereto, although referring to the foregoing examples This application has been described in detail, and those skilled in the art should understand that any person skilled in the art within the technical scope disclosed in this application can still modify the technical solutions described in the foregoing embodiments or can easily imagine Changes, or equivalent replacements of some of the technical features; these modifications, changes, or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should be covered by the scope of protection of this application Inside. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Industrial applicability

Based on the method, device, and server for establishing a TCP connection provided by the embodiments of the present application, during the process of establishing a connection between the client and TCP, even if the network status is poor, it can avoid that the timeout value becomes larger and larger and the server waits for the client to reply. If the time is getting longer and longer, the speed of establishing a TCP connection between the client and the server can be improved.

Claims (18)

A method for establishing a TCP connection, the method comprising: If a connection request from a client is received, a response signal corresponding to the connection request is sent to the client; wherein the connection request carries the client address of the client; Acquiring a pre-saved communication delay corresponding to the client address; Start a preset timer, and set the timeout value of the timer according to the communication delay; Based on the timeout value, establish a TCP connection with the client. The method according to claim 1, wherein the step of obtaining a pre-saved communication delay corresponding to the client address comprises: Obtain the communication delay corresponding to the client address from a pre-established database; Wherein, the database is established in the following manner: acquiring the historical communication record of the client corresponding to the client address, extracting the communication delay from the historical communication record, and comparing the extracted communication delay with the The client address is correspondingly saved in the database. The method according to claim 2, wherein the step of obtaining the communication delay corresponding to the client address from a pre-established database comprises: If the communication delay corresponding to the client address cannot be obtained from the database, determine the first area range to which the client address belongs; The communication delay corresponding to the client address within the first area is obtained from the database, and the communication delay is determined as the communication delay corresponding to the client address of the client. The method according to claim 2, wherein the database further stores: in the historical communication record, the server address of the server communicating with the client corresponding to the client address; the server The address, the client address, and the communication delay are stored correspondingly; The step of obtaining the communication delay corresponding to the client address from the pre-established database includes: Acquiring the server address of the server receiving the connection request; Obtain the communication delay corresponding to the client address and the server address from a pre-established database, and determine the communication delay as the communication delay corresponding to the client address of the client. The method according to claim 4, wherein the step of obtaining the communication delay corresponding to the client address and the server address from a pre-established database comprises: If the communication delay corresponding to the client address and the server address cannot be obtained from the database, determine the second area range to which the client address belongs; Acquiring, from the database, the communication delay corresponding to the server address and the client address within the second area; If the communication delay corresponding to the server address and the client address in the second area range cannot be obtained from the database, determine the third area range to which the server address belongs; The communication delay corresponding to the client address in the second area and the server address in the third area is obtained from the database. The method according to claim 2, wherein the method further comprises: If the updated historical communication record of the client corresponding to the client address is obtained, extract the updated communication delay from the updated historical communication record; If the updated communication delay is less than the communication delay corresponding to the client address recorded in the database, the updated communication delay corresponding to the client address is saved in the database. The method according to claim 1, wherein, based on the timeout value, the step of establishing a TCP connection with the client includes: When the duration of the timer is less than the timeout value, receiving a response signal returned by the client, and determining that the TCP connection with the client is successfully established; If the time duration of the timer reaches the timeout value, the response signal returned by the client is not received, and the step of sending the response signal corresponding to the connection request to the client is continued until all the response signals are received. The response signal returned by the client, or meets a preset condition; Wherein, the preset condition includes: after receiving the connection request, the number of times the response signal is sent reaches a preset number threshold, or the time interval between the current time and the first time the response signal is sent meets a preset Time threshold. A device for establishing a TCP connection, the device comprising: A signal sending module, configured to send a response signal corresponding to the connection request to the client if a connection request from the client is received; wherein the connection request carries the client address of the client; A delay acquiring module, configured to acquire a pre-saved communication delay corresponding to the client address; A timeout value setting module, configured to start a preset timer, and set the timeout value of the timer according to the communication delay; The TCP connection module is set to establish a TCP connection with the client based on the timeout value. The device according to claim 8, wherein the time delay obtaining module is specifically configured as follows: Obtain the communication delay corresponding to the client address from a pre-established database; Wherein, the database is established in the following manner: acquiring the historical communication record of the client corresponding to the client address, extracting the communication delay from the historical communication record, and comparing the extracted communication delay with the The client address is correspondingly saved in the database. The device according to claim 9, wherein the time delay obtaining module is specifically set to: If the communication delay corresponding to the client address cannot be obtained from the database, determine the first area range to which the client address belongs; The communication delay corresponding to the client address within the first area is obtained from the database, and the communication delay is determined as the communication delay corresponding to the client address of the client. The apparatus according to claim 9, wherein the database further stores: in the historical communication record, the server address of the server communicating with the client corresponding to the client address; the server The address, the client address, and the communication delay are stored correspondingly; The time delay acquisition module is specifically set as follows: Acquiring the server address of the server receiving the connection request; Obtain the communication delay corresponding to the client address and the server address from a pre-established database, and determine the communication delay as the communication delay corresponding to the client address of the client. The device according to claim 11, wherein the time delay obtaining module is specifically set to: If the communication delay corresponding to the client address and the server address cannot be obtained from the database, determine the second area range to which the client address belongs; Acquiring, from the database, the communication delay corresponding to the server address and the client address within the second area; If the communication delay corresponding to the server address and the client address in the second area range cannot be obtained from the database, determine the third area range to which the server address belongs; The communication delay corresponding to the client address in the second area and the server address in the third area is obtained from the database. The device according to claim 9, wherein the device further comprises: a database update module; The database update module is set to: If the updated historical communication record of the client corresponding to the client address is obtained, extract the updated communication delay from the updated historical communication record; If the updated communication delay is less than the communication delay corresponding to the client address recorded in the database, the updated communication delay corresponding to the client address is saved in the database. The device according to claim 8, wherein the TCP connection module is specifically configured as: When the duration of the timer is less than the timeout value, receiving a response signal returned by the client, and determining that the TCP connection with the client is successfully established; If the time duration of the timer reaches the timeout value, the response signal returned by the client is not received, and the step of sending the response signal corresponding to the connection request to the client is continued until all the response signals are received. The response signal returned by the client, or meets a preset condition; Wherein, the preset condition includes: after receiving the connection request, the number of times the response signal is sent reaches a preset number threshold, or the time interval between the current time and the first time the response signal is sent meets a preset Time threshold. A server comprising a processor and a memory, the memory storing machine executable instructions that can be executed by the processor, and the processor executing the machine executable instructions to implement any one of claims 1 to 7 The method of establishing a TCP connection described above. A machine-readable storage medium, the machine-readable storage medium stores machine-executable instructions, when the machine-executable instructions are called and executed by a processor, the machine-executable instructions prompt the processor to realize rights The method for establishing a TCP connection described in any one of 1 to 7 is required. A computer program product containing instructions, when the computer program product containing instructions runs on a computer, the computer executes the method steps of any one of claims 1-7. A computer program that, when run on a computer, causes the computer to perform the method steps described in any one of claims 1-7.

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