CN110225084B - Method and device for maintaining long connection of TCP - Google Patents
Method and device for maintaining long connection of TCP Download PDFInfo
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- CN110225084B CN110225084B CN201910373203.8A CN201910373203A CN110225084B CN 110225084 B CN110225084 B CN 110225084B CN 201910373203 A CN201910373203 A CN 201910373203A CN 110225084 B CN110225084 B CN 110225084B
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- tcp
- heartbeat signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
- H04L67/145—Termination or inactivation of sessions, e.g. event-controlled end of session avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
Abstract
The invention discloses a method and a device for maintaining long TCP connection, which are used for actively sending a reverse heartbeat signal by a server when a terminal is dormant so as to maintain the long TCP connection. The method comprises the following steps: when the forward heartbeat signal sent by the terminal is not received and the condition that the forward heartbeat signal meets the preset condition is not received, a reverse heartbeat signal is generated; sending a TCP application data packet to a baseband chip of the terminal through the TCP long connection where the forward heartbeat signal is located, wherein the TCP application data packet comprises: the reverse heartbeat signal.
Description
Technical Field
The present invention relates to the field of computer and communication technologies, and in particular, to a method and an apparatus for maintaining a long TCP connection.
Background
Each application (app) on the terminal generally communicates with the server through a long connection of a TCP (Transmission Control Protocol). When the user does not operate on the terminal within a period of time, the terminal can enter a dormant state to save electric quantity. At this time, the terminal may disconnect the long TCP connection with the server, which is not favorable for the server to push the message to the terminal.
Disclosure of Invention
The invention provides a method and a device for keeping long TCP connection, which are used for actively sending a reverse heartbeat signal by a server when a terminal is in dormancy so as to keep the long TCP connection.
The invention provides a method for maintaining long connection of TCP, which comprises the following steps:
when the forward heartbeat signal sent by the terminal is not received and the condition that the forward heartbeat signal is not received meets the preset condition, generating a reverse heartbeat signal;
sending a TCP application data packet to a baseband chip of the terminal through the TCP long connection where the forward heartbeat signal is located, wherein the TCP application data packet comprises: the reverse heartbeat signal.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects: in this embodiment, a reverse heartbeat signal is newly added, and the server can actively send the reverse heartbeat signal to the active node to ensure that the long connection of the TCP is not interrupted.
Optionally, the TCP application data packet includes a message type field, and one value of the message type field is used to mark the reverse heartbeat signal.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects: the embodiment improves the structure of the TCP application data packet, so that the TCP application data packet is suitable for transmitting the reverse heartbeat signal and is convenient for the terminal to identify and analyze the reverse heartbeat signal.
Optionally, the message type field is located in a header or a body of the TCP application data packet.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects: the embodiment provides structures of various TCP application data packets, and is suitable for various application scenarios.
The invention provides a method for maintaining long connection of TCP, which is applied to a terminal side and comprises the following steps:
through the existing TCP long connection, the baseband chip receives a TCP application data packet sent by a server, and the TCP application data packet comprises: a reverse heartbeat signal;
the baseband chip forwards the TCP application data packet to a central processing chip so as to activate the central processing chip;
and the operating system in the central processing chip sends the reverse heartbeat signal to an application module so as to trigger the application module to generate and send a forward heartbeat signal through the TCP long connection.
Optionally, the TCP application data packet includes a message type field, and one value of the message type field is used to mark the reverse heartbeat signal.
Optionally, the message type field is located in a header or a body of the TCP application data packet.
The invention provides a device for keeping TCP long connection, which is applied to a server side and comprises:
the generating module is used for generating a reverse heartbeat signal when the forward heartbeat signal sent by the terminal is not received and the condition that the forward heartbeat signal is not received meets the preset condition is met;
a sending module, configured to send a TCP application data packet to a baseband chip of the terminal through a TCP long connection where the forward heartbeat signal is located, where the TCP application data packet includes: the reverse heartbeat signal.
Optionally, the TCP application data packet includes a message type field, and one value of the message type field is used to mark the reverse heartbeat signal.
Optionally, the message type field is located in a header or a body of the TCP application data packet.
The invention provides a device for maintaining long connection of TCP, which is applied to a terminal side and comprises:
the baseband chip is used for receiving a TCP application data packet sent by a server through an existing TCP long connection, and the TCP application data packet comprises: a reverse heartbeat signal; forwarding the TCP application data packet to a central processing chip to activate the central processing chip;
and the central processing chip is used for sending the reverse heartbeat signal to the application module through the operating system so as to trigger the application module to generate and send a forward heartbeat signal through the TCP long connection.
Optionally, the TCP application data packet includes a message type field, and one value of the message type field is used to mark the reverse heartbeat signal.
Optionally, the message type field is located in a header or a body of the TCP application data packet.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a method for maintaining long TCP connections in an embodiment of the present invention;
FIG. 2 is a flow chart of a method for maintaining long TCP connections in an embodiment of the present invention;
FIG. 3 is a diagram of a device for maintaining long TCP connections in an embodiment of the present invention;
fig. 4 is a diagram of a device for maintaining long TCP connections in accordance with an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In the related art, in order to save electric power, when an application module in a terminal does not work for a period of time, the terminal stops sending heartbeat signals to a server, a central processing chip in the terminal also stops working and enters a sleep state, and then long TCP connection between the terminal and the server is possibly disconnected. This is not conducive to the server pushing messages to the terminal. In addition, frequent disconnection and connection of long TCP connections may also result.
In order to solve the above problem, in this embodiment, the server may actively send a reverse heartbeat signal to the terminal when not receiving the heartbeat signal, so as to maintain the long connection of the TCP.
Referring to fig. 1, the method for maintaining a long TCP connection in this embodiment includes:
step 101: and when the forward heartbeat signal sent by the terminal is not received and the condition that the forward heartbeat signal is not received meets the preset condition, generating a reverse heartbeat signal.
Step 102: sending a TCP application data packet to a baseband chip of the terminal through the TCP long connection where the forward heartbeat signal is located, wherein the TCP application data packet comprises: the reverse heartbeat signal.
The present embodiment is applied to the server side, and is a server serving a certain application. When the terminal is in an active state, the terminal periodically sends a heartbeat signal to the server, and in order to distinguish the heartbeat signal from the heartbeat signal sent by the server, the heartbeat signal sent by the terminal is called a forward heartbeat signal, and the heartbeat signal sent by the server is called a reverse heartbeat signal. The central processing chip in the terminal can send a forward heartbeat signal of a physical layer to the server so as to keep a long TCP connection between the terminal and the server uninterrupted.
When the terminal stops working within a period of time, the terminal enters a dormant state or a standby state, and the central processing chip stops sending the forward heartbeat signal generated by the application module. And if the server cannot receive the forward heartbeat signal, disconnecting the long TCP connection. However, in this embodiment, if the server does not receive the forward heartbeat signal once, the long TCP connection is not immediately disconnected, but it is determined whether the non-received forward heartbeat signal meets a preset condition, for example, the preset condition is that the forward heartbeat signal is not received in two consecutive periods. When the preset condition is met, the server does not disconnect the long TCP connection, but actively sends a reverse heartbeat signal to the terminal so as to maintain the long TCP connection. Through the reverse heartbeat signal, the terminal can be activated, the terminal is triggered to send a forward heartbeat signal, and TCP long connection is further maintained.
Optionally, the TCP application data packet includes a message type field, and one value of the message type field is used to mark the reverse heartbeat signal.
The embodiment improves the structure of the TCP application data packet, and adds a message type field and a reverse heartbeat signal in the TCP application data packet. The message type field may have various values, for example, a first value indicates that the TCP application packet carries a forward heartbeat signal, a second value indicates that the TCP application packet carries a reverse heartbeat signal, and a third value indicates that the TCP application packet carries data, so that the terminal can analyze the TCP application packet conveniently.
Optionally, the message type field is located in a header or a body of the TCP application data packet.
In this embodiment, the message type field may be located in the packet header of the TCP application data packet or in the packet body of the TCP application data packet. There may be a variety of implementations.
The implementation process of the server side is described above, and correspondingly, the terminal side is also improved, and the implementation process of the terminal side is described below.
Referring to fig. 2, the method for maintaining a long TCP connection in this embodiment includes:
step 201: through the existing TCP long connection, the baseband chip receives a TCP application data packet sent by a server, and the TCP application data packet comprises: the reverse heartbeat signal.
Step 202: and the baseband chip forwards the TCP application data packet to a central processing chip so as to activate the central processing chip.
Step 203: and the operating system in the central processing chip sends the reverse heartbeat signal to an application module so as to trigger the application module to generate and send a forward heartbeat signal through the TCP long connection.
In this embodiment, the central processing chip in the terminal is in a sleep or standby state, and stops sending the forward heartbeat signal, but the baseband chip does not sleep. The baseband chip may be an integration of multiple wireless communication modules such as mobile communication and WiFi (wireless fidelity), or may be one of the wireless communication modules. Since the baseband chip is not dormant, the TCP application data packet sent by the server can be received. When the baseband chip identifies that the TCP application data packet is an application data packet, the baseband chip sends the TCP application data packet to the central processing chip, which is equivalent to activating the central processing chip. Wherein the TCP application packet contains information for marking the application packet.
The operating system in the central processing chip firstly receives the TCP application data packet, and when the TCP application data packet is identified to be an application data packet, the operating system sends the reverse heartbeat signal in the application data packet to the application module. The TCP application data packet includes identification information of the application module, and the operating system may send the reverse heartbeat signal to the corresponding application module, which is equivalent to activating the application module.
And after the application module is activated, generating a forward heartbeat signal, wherein the forward heartbeat signal is a heartbeat signal of an application layer and is sent to an operating system. The operating system in the central processing chip generates a TCP data packet containing the forward heartbeat signal and sends the TCP data packet to the server through the baseband chip.
Through the process, the central processing chip and the application module in the terminal are activated, and the central processing chip can continuously and periodically send forward heartbeat signals, so that the long connection of the TCP is always kept uninterrupted.
Optionally, the TCP application data packet includes a message type field, and one value of the message type field is used to mark the reverse heartbeat signal.
The embodiment improves the structure of the TCP application data packet, and adds a message type field and a reverse heartbeat signal in the TCP application data packet. The message type field may have various values, for example, a first value indicates that the TCP application packet carries a forward heartbeat signal, a second value indicates that the TCP application packet carries a reverse heartbeat signal, and a third value indicates that the TCP application packet carries data.
The baseband chip recognizes that the TCP application data packet is an application data packet and sends the application data packet to the central processing chip. And the operating system in the central processing chip analyzes the TCP application data packet, determines that the TCP application data packet carries a reverse heartbeat signal according to the value of the message type field, further analyzes the reverse heartbeat signal and sends the reverse heartbeat signal to a corresponding application module.
Optionally, the message type field is located in a header or a body of the TCP application data packet.
In this embodiment, the message type field may be located in the packet header of the TCP application data packet or in the packet body of the TCP application data packet. There may be a variety of implementations.
The above embodiments can be freely combined according to actual needs.
The implementation of maintaining long TCP connections is described above and may be implemented by a device, the internal structure and function of which are described below.
Referring to fig. 3, the apparatus for maintaining long TCP connection in this embodiment, applied to the server side, includes: a generating module 301 and a sending module 302.
The generating module 301 is configured to generate a reverse heartbeat signal when a forward heartbeat signal sent by the terminal is not received and the forward heartbeat signal is not received and meets a preset condition.
A sending module 302, configured to send a TCP application data packet to a baseband chip of the terminal through a TCP long connection where the forward heartbeat signal is located, where the TCP application data packet includes: the heartbeat signal is reversed.
Optionally, the TCP application data packet includes a message type field, and one value of the message type field is used to mark the reverse heartbeat signal.
Optionally, the message type field is located in a header or a body of the TCP application data packet.
Referring to fig. 4, the apparatus for maintaining a long TCP connection in this embodiment, applied to a terminal side, includes: a baseband chip 401 and a central processing chip 402.
The baseband chip 401 is configured to receive a TCP application packet sent by a server through an existing TCP long connection, where the TCP application packet includes: a reverse heartbeat signal; and forwarding the TCP application data packet to a central processing chip so as to activate the central processing chip.
The central processing chip 402 is configured to send the reverse heartbeat signal to the application module through the operating system, so as to trigger the application module to generate and send a forward heartbeat signal through the TCP long connection.
Optionally, the TCP application data packet includes a message type field, and one value of the message type field is used to mark the reverse heartbeat signal.
Optionally, the message type field is located in a header or a body of the TCP application data packet.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. A method for maintaining long TCP connection, applied to a server side, includes:
when the forward heartbeat signal sent by the terminal is not received and the condition that the forward heartbeat signal is not received meets the preset condition, generating a reverse heartbeat signal; the preset conditions include: the forward heartbeat signal is not received in two continuous periods;
sending a TCP application data packet to a baseband chip of the terminal through the TCP long connection where the forward heartbeat signal is located, wherein the TCP application data packet comprises: a reverse heartbeat signal; so that the baseband chip forwards the TCP application data packet to a central processing chip to activate the central processing chip; and the operating system in the central processing chip sends the reverse heartbeat signal to an application module so as to trigger the application module to generate and send a forward heartbeat signal through the TCP long connection.
2. The method of claim 1, wherein the TCP application packet includes a message type field, one value of the message type field being used to mark the reverse heartbeat signal.
3. The method of claim 2, wherein the message type field is located in a header or a body of the TCP application packet.
4. A method for maintaining long TCP connection, applied to a terminal side, includes:
through the existing TCP long connection, the baseband chip receives a TCP application data packet sent by a server, and the TCP application data packet comprises: a reverse heartbeat signal; wherein the reverse heartbeat signal is generated by the server without receiving the forward heartbeat signal in two continuous periods;
the baseband chip forwards the TCP application data packet to a central processing chip so as to activate the central processing chip;
and the operating system in the central processing chip sends the reverse heartbeat signal to an application module so as to trigger the application module to generate and send a forward heartbeat signal through the TCP long connection.
5. The method of claim 4, wherein the TCP application packet includes a message type field, one value of which is used to mark the reverse heartbeat signal.
6. The method of claim 5, wherein the message type field is located in a header or a body of the TCP application data packet.
7. An apparatus for maintaining long connection of TCP, which is applied to a server side, comprises:
the generating module is used for generating a reverse heartbeat signal when the forward heartbeat signal sent by the terminal is not received and the condition that the forward heartbeat signal is not received meets the preset condition is met; the preset conditions include: the forward heartbeat signal is not received in two continuous periods;
a sending module, configured to send a TCP application data packet to a baseband chip of the terminal through a TCP long connection where the forward heartbeat signal is located, where the TCP application data packet includes: a reverse heartbeat signal; so that the baseband chip forwards the TCP application data packet to a central processing chip to activate the central processing chip; and the operating system in the central processing chip sends the reverse heartbeat signal to an application module so as to trigger the application module to generate and send a forward heartbeat signal through the TCP long connection.
8. The apparatus of claim 7, wherein the TCP application packet includes a message type field, one value of the message type field being used to mark the reverse heartbeat signal.
9. The apparatus of claim 8, wherein the message type field is located in a header or a body of the TCP application packet.
10. An apparatus for maintaining long connection of TCP, applied to a terminal side, comprising:
the baseband chip is used for receiving a TCP application data packet sent by a server through an existing TCP long connection, and the TCP application data packet comprises: a reverse heartbeat signal; forwarding the TCP application data packet to a central processing chip so as to activate the central processing chip; wherein the reverse heartbeat signal is generated by the server without receiving the forward heartbeat signal in two continuous periods;
and the central processing chip is used for sending the reverse heartbeat signal to the application module through the operating system so as to trigger the application module to generate and send a forward heartbeat signal through the TCP long connection.
11. The apparatus of claim 10, wherein the TCP application packet includes a message type field, one value of the message type field being used to mark the reverse heartbeat signal.
12. The apparatus of claim 11, wherein the message type field is located in a header or a body of the TCP application packet.
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