WO2018099308A1

WO2018099308A1 - Method and apparatus for supporting address changes, and storage medium

Info

Publication number: WO2018099308A1
Application number: PCT/CN2017/112377
Authority: WO
Inventors: 邱军; 金飞蔡
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-11-29
Filing date: 2017-11-22
Publication date: 2018-06-07
Also published as: CN108124023A

Abstract

Disclosed are a method and apparatus for supporting address changes, and a storage medium. The method comprises: establishing a connection for using a first IP address with a peer end device; by means of the connection for using the first IP address, actively negotiating with the peer end device to change the IP address of the connection to a second IP address; and after the negotiation is completed, changing the IP address of the connection from the first IP address to the second IP address.

Description

Method, device and storage medium supporting address change

Cross-reference to related applications

The present application is based on a Chinese patent application filed on Jan. 29, 2016, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present invention relates to the field of data communication technologies, and in particular, to a method, an apparatus, and a storage medium for supporting address changes.

Background technique

Some Internet Protocol (IP)-based connections, such as the Transmission Control Protocol (TCP), are fixed after the connection is established and cannot be changed. If the IP address changes, you will need to re-establish the connection.

However, in modern network environments, IP addresses are sometimes changeable. For example, when a mobile terminal switches between a mobile network and WIFI, the IP address changes. For example, devices with higher security requirements are usually periodically. Update the IP address it uses to improve its ability to defend against attacks. According to the related technology, when the IP address changes, the connection established by using the pre-change IP address cannot be maintained and disconnected, which may result in interruption of data transmission. If you want to continue to complete the previously unfinished operation, you need to establish a new connection with the changed IP address to restart the data transfer.

Summary of the invention

In view of this, an embodiment of the present invention provides a method, an apparatus, and a storage medium for supporting address change.

The embodiment of the invention provides a method for supporting address change, including: constructing with a peer device Establishing a connection using the first IP address; actively using the connection of the first IP address to actively negotiate with the peer device to change the IP address of the connection to a second IP address; when the negotiation is completed, The connected IP address is changed from the first IP address to the second IP address.

The initiating the negotiation with the peer device to change the IP address of the connection to the second IP address includes: sending, by using the connection, an IP address change request packet to the peer device, where the IP The address change request message includes: a second IP address.

The initiating the negotiation with the peer device to change the IP address of the connection to the second IP address further includes: receiving an IP from the peer device for responding to the IP address change request packet An address change response message; and sending an IP address change confirmation message to the peer device.

The method further includes: after the changing the IP address of the connection from the first IP address to the second IP address, sending the first keep-alive message to the peer device; The first IP address is deleted when the second keep-alive message or the keep-alive confirmation message of the first keep-alive message is sent by the peer device.

The method further includes: receiving a notification that the IP address of the connection is changed to the second IP address; and performing the active and the peer device when detecting that the allowed IP address is changed according to the notification The step of negotiating changing the IP address of the connection to the second IP address.

Wherein the connection is a TCP connection.

An embodiment of the present invention provides a method for supporting address change, including: establishing a connection with a peer device using a first IP address; and accepting, by the peer device, changing the IP address of the connection to a second IP address. Negotiation, wherein the second IP address is provided by the peer device; and when the negotiation is completed, changing the IP address of the connection from the first IP address to the second IP address.

The negotiating, by the peer device, to change the IP address of the connection to the second IP address, includes: receiving an IP address change request packet from the peer device, where the IP address The change request message includes: the second IP address; and the IP address change response message is returned to the peer device according to the IP address change request message; and the IP address change confirmation sent by the peer device is received. a packet; wherein, when the IP address change confirmation message is received, the negotiation is completed.

The method further includes: after changing the IP address of the connection from the first IP address to the second IP address, sending a first keep-alive message to the peer device, or receiving When the second keep-alive packet is sent from the peer device, the keep-alive acknowledgement packet of the second keep-alive packet is sent to the peer device.

Wherein the connection is a TCP connection.

An embodiment of the present invention provides an apparatus for supporting address change, including: a connection module configured to establish a connection with a peer device using a first IP address; and a negotiation module configured to use the first IP address Connecting, actively negotiating with the peer device to change the IP address of the connection to a second IP address; and the address update module is configured to change the IP address of the connection by the first IP address when the negotiation is completed Is the second IP address.

The negotiation module is configured to: send an IP address change request message to the peer device by using the connection, where the IP address change request message includes: a second IP address; and receiving from the peer end And an IP address change response message of the device for responding to the IP address change request message; and sending an IP address change confirmation message to the peer device.

The method further includes: a sending module, configured to send the first keep-alive report to the peer device after the address update module changes the connected IP address from the first IP address to the second IP address And the processing module is configured to delete the first IP address when receiving the second keep-alive message sent by the peer device or the keep-alive confirmation message of the first keep-alive message.

The negotiation module is configured to detect whether an IP address change is allowed when a notification that the IP address of the connection is changed to a second IP address, and when the change of the allowed IP address is detected, The peer device negotiates to change the IP address of the connection to the second IP address.

An embodiment of the present invention provides an apparatus for supporting address change, including: a connection module configured to establish a connection with a peer device using a first IP address; a negotiation module; configured to accept the originating device to initiate the Changing the connected IP address to a negotiation of the second IP address, wherein the second IP address is provided by the peer device; and an address update module configured to: when the negotiation is completed, the IP address of the connection is The first IP address is changed to the second IP address.

The negotiation module is configured to: receive an IP address change request message from the peer device, where the IP address change request message includes: the second IP address; And the IP address change request message is sent to the peer device, and the IP address change acknowledgement message sent by the peer device is received; and the IP address change confirmation report is received. The text indicates that the negotiation is completed.

The transceiver module is further configured to send the first security to the peer device after the address update module changes the IP address of the connection from the first IP address to the second IP address. And a keepalive acknowledgement message of the second keepalive message is sent to the peer device when receiving the second keepalive message from the peer device.

Embodiments of the present invention provide a storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of any of the above methods.

The beneficial effects of the embodiments of the present invention are:

In the embodiment of the present invention, in the case that the connection is not disconnected, the connection is used to negotiate with the peer device to change the IP address of the connection from the first IP address to the second IP address, so that the IP address is implemented without interrupting the connection. Smooth changes.

DRAWINGS

1 is a schematic flow chart of a first embodiment of a method for supporting address change according to an embodiment of the present invention;

2 is a schematic flow chart of an embodiment of step 102 in FIG. 1;

3 is a schematic flow chart of a second embodiment of a method for supporting address change according to an embodiment of the present invention;

4 is a schematic flow chart of a third embodiment of a method for supporting address change according to an embodiment of the present invention;

FIG. 5 is a schematic flow chart of an embodiment of step 402 in FIG. 4;

FIG. 6 is a schematic flowchart diagram of a fourth embodiment of a method for supporting address change according to an embodiment of the present invention; FIG.

FIG. 7 is a schematic flowchart diagram of a fifth embodiment of a method for supporting address change according to an embodiment of the present invention; FIG.

FIG. 8 is a structural diagram showing a first embodiment of an apparatus for supporting address change according to an embodiment of the present invention; intention;

FIG. 9 is a schematic structural diagram of a second embodiment of an apparatus for supporting address change according to an embodiment of the present invention; FIG.

FIG. 10 is a schematic structural diagram of a third embodiment of an apparatus for supporting address change according to an embodiment of the present invention.

detailed description

In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail below. However, it will be apparent to those skilled in the art that, in the various embodiments of the present invention, numerous technical details are set forth in order to provide the reader with a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

Please refer to FIG. 1, which is a schematic flowchart of a first embodiment of a method for supporting address change according to the present invention. The embodiment of FIG. 1 is an illustration from the originating end of the address change. Specifically, it includes the following steps:

Step 101: Establish a connection with the peer device using the first IP address.

Step 102: Proactively negotiate with the peer device to change the connected IP address to the second IP address.

Step 103: When the negotiation is completed, the connected IP address is changed from the first IP address to the second IP address.

Wherein, in step 101, the established connection may be, for example, a TCP connection. Specifically, TCP establishes a connection through three-way handshake negotiation. After the connection is established, the application layer data can be reliably transmitted on the TCP. In this process, the connected quaternary group (source IP address, source port, destination) is identified. The IP address and destination port) remain unchanged. The source IP address and the destination IP address in the quaternary are the IP addresses of the two ends of the TCP connection, which are usually assigned to the terminal through static configuration or dynamic protocols (such as DHCP and DHCPv6 protocols); the source port and the destination port are two TCP connections. The identifier of the end application, one is usually a well-known port (such as 80 port identification HTTP protocol), and the other is usually a port randomly assigned in a non-known port interval to distinguish different instances of the same application.

After the connection in step 101 is established, the IP addresses of the two ends of the connection are fixed, and the first IP address here is the IP address of the local device. In this example, the IP address of the peer device remains unchanged. change.

In step 102, the local device can periodically update its IP address, for example, periodically triggering step 102. Of course, the local device can also trigger the above step 102 at any time. For example, if the local device includes: an IP address change processing unit and an IP address change negotiation unit, the IP address change processing unit may periodically change the IP address used by the local device, and change the negotiation unit to the IP address. A related notification is sent to notify the IP address change negotiation unit to change the IP address of the current connection. The notification may include: an IP address currently used (first IP address) and an IP address to be changed (second IP address).

In addition, in step 102, it may be detected first whether the IP address change is allowed. If the allowed IP address change is detected, the device negotiates with the peer device; otherwise, the IP change is rejected. In general, step 102 can detect whether it is currently in an address change state to decide whether to negotiate with the peer device, or step 102 can detect whether the second IP address is legal to determine whether to negotiate with the peer device.

In this embodiment, in the case that the connection is not disconnected, the connection is used to negotiate with the peer device to change the IP address of the connection to the second IP address, so that the IP address can be smoothly changed without interrupting the connection, thereby ensuring the application. (such as data transfer applications) will not be interrupted due to changes in IP addresses.

As shown in FIG. 2, it is a schematic flowchart of an embodiment of step 102, which includes:

Step 201: Send an IP address change request message to the peer device, where the IP address change request message includes: a second IP address.

In the step, the pre-changed IP address (ie, the second IP address) is notified to the peer device by using the IP address change request message.

Step 202: Receive an IP address change response message from the peer device for responding to the IP address change request message.

Step 203: Send an IP address change confirmation message to the peer device.

In the above, the IP address change request packet, the IP address change response packet, and the IP address change confirmation packet are packets for IP change negotiation between the local end and the peer device. In addition, the local and the opposite The packet of the IP address negotiation negotiation between the end devices may further include: an IP address change rejection packet. For example, when the peer device receives the IP address change request packet of the local end, if the current location does not allow the IP address to change, the peer device can return the IP address change rejection packet.

The packet carrying the IP change negotiation between the local end and the peer device carries an address change flag, and is used to mark the packet as a packet related to the address change negotiation. For example, a message format with an address change flag can be as shown in Table 1:

Head length

Reserved

Address change tag

......

Table 1

The address change option is carried in the packet of the IP address negotiation between the local device and the peer device. The address change option is used to negotiate the address change at both ends of the connection. The format of the packet is as shown in Table 2:

Table 2

The subtype is used to distinguish the type of the packet, for example, one of a request message, a response message, a rejection message, and an acknowledgement message. For example, subtype=1 means that this is an IP address change request message; subtype=2 means that this is an IP address change response message; subtype=3 means this is an IP address change rejection message; subtype=4 Indicates that this is an IP address change confirmation message.

As shown in FIG. 3, it is a schematic flowchart of a second embodiment of the method for supporting address change according to the present invention. In addition to the same steps 301-303 as steps 101 to 103 in FIG. 1, the method further includes:

Step 304: Send a first keep-alive message to the peer device.

Step 305: Delete the first IP address when receiving the second keep-alive message or the keep-alive confirmation message of the first keep-alive message sent by the peer device.

The step 304 is to send a first keep alive message to the peer device by using the connection whose address is changed to the second IP address, so that the local end has successfully switched the connected IP address to the second IP address. If the second keepalive packet or the keepalive acknowledgement packet is received by the peer device, the peer end successfully switches the connected IP address to the second IP address. An IP address is deleted to indicate that the connected IP address has been completely switched to the second IP address.

In this embodiment, after the connected IP address is switched to the second IP address, the keepalive message may be sent to the peer end to verify whether the other party successfully switches.

In the foregoing embodiments of FIG. 1 to FIG. 3, the method for supporting the address change of the present invention is described from the end that actively initiates the change of the IP address, and the passive end, that is, the peer device side in the foregoing embodiment, is used for the present invention. The method of supporting address change is explained.

As shown in FIG. 4, it is a schematic flowchart of a third embodiment of a method for supporting address change according to the present invention. It includes:

Step 401: Establish a connection with the peer device using the first IP address.

Step 402: Accept the negotiation initiated by the peer device to change the connected IP address to the second IP address, where the second IP address is provided by the peer device.

Step 403: When the negotiation is completed, the connected IP address is changed from the first IP address to the second IP address.

The process of step 402 is as shown in FIG. 5, which includes:

Step 501: Receive an IP address change request message from the peer device, where the IP address change request message includes: a second IP address.

Step 502: Reply to the IP address change response packet to the peer device according to the IP address change request packet.

Step 503: Receive an IP address change confirmation message sent by the peer device. When the IP address change confirmation message is received, the negotiation may be completed.

In step 502, according to the IP address change request message, first check whether the address change is allowed, and if yes, return the IP address change response message, otherwise return the IP address change rejection message.

FIG. 6 is a schematic flow chart of a fourth embodiment of a method for supporting address change according to the present invention. In addition to the steps 601 to 603 which are the same as steps 401 to 403 of FIG. 4, the method further includes:

Step 604: Send a first keep-alive message to the peer device, or send a keep-alive confirmation message of the second keep-alive message to the peer device when receiving the second keep-alive message from the peer device. Text.

The first keep-alive message or the keep-alive confirmation message is transmitted on the connection using the second IP address, so as to confirm that the peer device has successfully switched the connected IP address to the second IP address.

In this embodiment, when the connection using the first IP address is kept disconnected, the peer device negotiates to change the IP address of the connection to the second IP address, so that the IP address is smoothly changed without interrupting the connection.

The foregoing describes the method for supporting address change from the two ends of the connection respectively. Referring to FIG. 7, a detailed embodiment of the method for supporting address change according to the present invention is further illustrated; wherein, for ease of understanding, the connection is made. The two ends are respectively described by the server and the client, and the server is used as the initiator of the IP address change, and the client is used as the passive terminal for description.

As shown in FIG. 7, it includes the following steps:

Step 701: The server establishes a TCP connection with the client.

Wherein, the connection may be a TCP connection and is based on the first IP address, where the first IP address refers to the address of the server. It should be noted that, in this embodiment, the IP address of the server is variable. The IP address of the client remains fixed, so the client's IP address is not specified. That is to say, the second IP address mentioned later also refers to the IP address of the server.

Step 702: Receive a notification of an IP address change.

The IP address of the server may be periodically changed. For example, the IP address change processing unit in the server periodically changes the IP address. And when the IP address change period arrives, the negotiation processing unit in the server is notified, and the notified information includes the currently used IP address (first IP address), and the IP address (second IP address) to be changed.

Step 703: Send an IP address change request message to the client.

The IP address change request packet carries the foregoing address change flag and address change option. Among them, the subtype in the address change option is set to 1, and the updated IP address is set to the second IP address.

After the address change request message is sent to the client in step 703, the retransmission timer may be started. That is to say, after step 703, if the reply of the opposite end is not received within the preset time, the retransmission operation is performed. Also, you can set the number of major retransmissions at the same time. After the maximum number of retransmissions is reached, the reply from the peer is still not received, indicating that the address change failed.

In addition, before sending an IP address change request packet to the client, it can detect whether the IP address change is allowed. If yes, the IP address change request packet is sent, otherwise it is not sent. Specifically, the current first IP address in the notification can be used to find the current TCP connection using the first IP address, and then check whether the TCP connection can change the address (for example, detecting whether the TCP is in the address change state or jumping). Whether the address is legal, etc.), if possible, continue with the subsequent steps, otherwise the address change is rejected.

Step 704: The client replies to the IP address change response message.

The IP address change response message may carry the foregoing address change flag and address change option, and set the subtype in the address change option to 2.

At the same time, the client can also initiate an address change response retransmission timer and set the retransmission time and the maximum number of retransmissions. After the maximum number of retransmissions is reached, the server does not receive a reply, which may be regarded as a failure of the address change.

In addition, the client can detect whether the TCP connection allows address change before replying to the IP address change response message. If yes, send an IP address change response message; if not, return an IP address change rejection message. The IP address change reject message may carry the foregoing address change flag and address change option, and set the subtype in the address change option to 3.

Step 705: The server replies to the IP address confirmation message.

The server receives the IP address change response packet, indicating that the peer device agrees to change the address, and then can reply the IP address change confirmation packet.

Step 706: The server updates the address of the TCP connection to the second IP address.

Step 707: After receiving the IP address confirmation message, the client updates the IP address of the TCP connection to the second IP address.

Step 708: The server sends a keep-alive message to the client.

The keep-alive message is transmitted on the new connection (the server address is the second IP address).

Step 709: The client returns a keep-alive confirmation message to the server.

Step 710: The server deletes the first IP address.

In this embodiment, when the IP address changes, the two ends of the TCP carry the address change flag and the ground. The address change request, the response, and the acknowledgement packet of the address change option negotiate the address change, so that both ends of the TCP connection can simultaneously switch the IP address to the changed IP address, so that the TCP connection remains intact, and the application data transmission is not Interrupted.

As shown in FIG. 8, it is a schematic structural diagram of a first embodiment of an apparatus 800 for supporting address change according to the present invention. The device supporting the address change may be an initiator of the address change, such as the foregoing server. It includes:

The connection module 801 is configured to establish a connection with the peer device using the first IP address.

The negotiation module 802 is configured to actively change the IP address of the connection to a second IP address by negotiating with the peer device by using the connection of the first IP address.

The address update module 803 is configured to change the IP address of the connection from the first IP address to the second IP address when the negotiation is completed.

The negotiation module 801 is configured to send an IP address change request message to the peer device by using the connection, where the IP address change request message includes: a second IP address; and receiving from the peer device And an IP address change response message for responding to the IP address change request message; and sending an IP address change confirmation message to the peer device.

The present embodiment is an apparatus embodiment corresponding to the embodiment of FIG. 1 and FIG. 2, and thus the related detailed description has been described above, and details are not described herein.

As shown in FIG. 9, it is a schematic structural diagram of a second embodiment of the apparatus 800 for supporting address change according to the present invention. In addition to the modules shown in the embodiment of FIG. 8, it also includes:

The sending module 804 is configured to: after the address update module changes the connected IP address from the first IP address to the second IP address, send the first keep-alive message to the peer device;

The processing module 805 is configured to delete the first IP address when receiving the second keep-alive message sent by the peer device or the keep-alive confirmation message of the first keep-alive message.

The embodiment is an apparatus embodiment corresponding to the foregoing embodiment of FIG. 3, and the related details have been previously described, and details are not described herein.

In practical applications, the connection module 801, the negotiation module 802, and the sending module 804 can be implemented by a processor in the device 800 supporting the address change in combination with the communication interface; the address update module 803 and The management module 805 can be implemented by a processor in the device 800 that supports address changes. That is, the apparatus 800 supporting address change according to an embodiment of the present invention includes: a processor and a memory for storing a computer program executable on the processor,

Wherein the processor is configured to perform the steps of the above method when the computer program is run.

Here, the processor is connected to the communication interface to implement interaction with the peer device.

As shown in FIG. 10, it is a schematic structural diagram of a third embodiment of the apparatus 100 for supporting address change according to the present invention. The device 100 supporting the address change is mainly configured to passively accept one end of the address change, such as the aforementioned client. It includes:

The connection module 101 is configured to establish a connection with the peer device using the first IP address.

The negotiation module 102 is configured to accept, by the peer device, a negotiation of changing the IP address of the connection to a second IP address, where the second IP address is provided by the peer device;

The address update module 103 is configured to change the IP address of the connection from the first IP address to the second IP address when the negotiation is completed.

The negotiation module 102 is configured to receive an IP address change request packet from the peer device, where the IP address change request packet includes: the second IP address; Receiving a message, replying to the peer device with an IP address change response message; and receiving an IP address change confirmation message sent by the peer device; wherein, when receiving the IP address change confirmation message, indicating The negotiation is completed.

Wherein, this embodiment is an apparatus embodiment corresponding to the foregoing embodiments of FIG. 4 and FIG. 5, and thus the related details have been described above, and are not described herein.

In addition, as shown in FIG. 10, the apparatus 100 for supporting address change further includes: a transceiver module 104 configured to change, at the address update module, the IP address of the connection from the first IP address to the second After the IP address, the first keepalive message is sent to the peer device, or when the second keepalive message from the peer device is received, the second keepalive is sent to the peer device The keepalive confirmation message of the message.

For this process, reference may be made to the foregoing description of the embodiment of FIG. 6, and details are not described herein.

In practical applications, the connection module 101, the negotiation module 102, and the transceiver module 104 can be implemented by a processor in the device 100 supporting address change in conjunction with a communication interface; the address update module 103 can be implemented by a processor in the device 800 that supports address changes. That is, the apparatus 800 supporting address change according to an embodiment of the present invention includes: a processor and a memory for storing a computer program executable on the processor,

It is worth mentioning that each module involved in the present invention is a logic module. In practical applications, a logical unit may be a physical unit, a part of a physical unit, or multiple physical units. Combined implementation. In addition, in order to highlight the innovative part of the present invention, the present embodiment does not introduce a unit that is not closely related to solving the technical problem proposed by the present invention, but this does not mean that there are no other units in the present embodiment.

A person skilled in the art can understand that all or part of the process of implementing the foregoing embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium, the program When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

Based on this, an embodiment of the present invention provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the foregoing method are implemented.

A person skilled in the art can understand that the above embodiments are specific embodiments for implementing the present invention, and various changes can be made in the form and details without departing from the spirit and scope of the present invention. range.

Industrial applicability

The solution provided by the embodiment of the present invention, in the case that the connection is not disconnected, uses the connection to negotiate with the peer device to change the IP address of the connection from the first IP address to the second IP address, thereby implementing the connection without interrupting the connection. A smooth change in the IP address.

Claims

A method to support address changes, including:

Establishing a connection with the peer device using the first IP address;

Proactively negotiating with the peer device to change the IP address of the connection to a second IP address by using the connection of the first IP address;

When the negotiation is completed, the IP address of the connection is changed from the first IP address to the second IP address.
The method for supporting address change according to claim 1, wherein the actively negotiating with the peer device to change the connected IP address to a second IP address comprises:

Sending an IP address change request message to the peer device by using the connection, where the IP address change request message includes: a second IP address.
The method for supporting address change according to claim 2, wherein the actively negotiating with the peer device to change the IP address of the connection to the second IP address further includes:

Receiving an IP address change response message from the peer device for responding to the IP address change request message;

Sending an IP address change confirmation message to the peer device.
The method for supporting address change according to claim 1, wherein the method further comprises:

After the IP address of the connection is changed from the first IP address to the second IP address, the first keepalive message is sent to the peer device;

And deleting the first IP address when receiving the second keep-alive message sent by the peer device or the keep-alive confirmation message of the first keep-alive message.
The method for supporting address change according to claim 1, wherein the method further comprises:

Receiving a notification of changing the IP address of the connection to the second IP address;

According to the notification, when detecting that the allowed IP address changes, performing the initiative and the pair The step of negotiating the changed IP address of the connection to the second IP address by the end device.
The method of supporting address change according to claim 1, wherein said connection is a Transmission Control Protocol (TCP) connection.
A method to support address changes, including:

Establishing a connection with the peer device using the first IP address;

Accepting, by the peer device, a negotiation of changing the IP address of the connection to a second IP address, where the second IP address is provided by the peer device;

When the negotiation is completed, the IP address of the connection is changed from the first IP address to the second IP address.
The method for supporting address change according to claim 7, wherein the accepting the negotiation initiated by the peer device to change the connected IP address to the second IP address comprises:

Receiving an IP address change request message from the peer device, where the IP address change request message includes: the second IP address;

And replying to the peer device with an IP address change response message according to the IP address change request packet;

Receiving an IP address change confirmation message sent by the peer device;

When the IP address change confirmation message is received, it indicates that the negotiation is completed.
The method of supporting address change according to claim 7, wherein the method further comprises:

After the IP address of the connection is changed from the first IP address to the second IP address, sending a first keep-alive message to the peer device, or receiving a message from the peer device When the second keepalive message is sent, the keepalive acknowledgement message of the second keepalive message is sent to the peer device.
The method of supporting address change according to claim 7, wherein said connection is a Transmission Control Protocol (TCP) connection.
A device that supports address changes, comprising:

a connection module configured to establish a connection with the peer device using the first IP address;

The negotiation module is configured to actively change the IP address of the connection to the second IP address by negotiating with the peer device by using the connection of the first IP address;

The address update module is configured to change the IP address of the connection from the first IP address to the second IP address when the negotiation is completed.
The apparatus for supporting address change according to claim 10, wherein the negotiation module is configured to:

Sending an IP address change request message to the peer device by using the connection, where the IP address change request message includes: a second IP address;

Receiving an IP address change response message from the peer device for responding to the IP address change request message;

Sending an IP address change confirmation message to the peer device.
The device for supporting address change according to claim 10, further comprising:

a sending module, configured to send the first keep-alive message to the peer device after the address update module changes the IP address of the connection from the first IP address to the second IP address;

The processing module is configured to delete the first IP address when receiving the second keep-alive message sent by the peer device or the keep-alive confirmation message of the first keep-alive message.
The apparatus for supporting address change according to claim 10, wherein

The negotiation module is configured to detect, when the notification of changing the IP address of the connection is changed to the second IP address, whether the IP address change is allowed, and when the change of the allowed IP address is detected, actively and the opposite end The device negotiates to change the IP address of the connection to the second IP address.
A device that supports address changes, including:

a connection module configured to establish a connection with the peer device using the first IP address;

a negotiation module, configured to accept, by the peer device, a negotiation to change the IP address of the connection to a second IP address, where the second IP address is provided by the peer device;

An address update module configured to: when the negotiation is completed, the IP address of the connection is The first IP address is changed to the second IP address.
The apparatus for supporting address change according to claim 15, wherein the negotiation module is configured to:

Receiving an IP address change request message from the peer device, where the IP address change request message includes: the second IP address;

And replying to the peer device with an IP address change response message according to the IP address change request packet;

Receiving an IP address change confirmation message sent by the peer device;

When the IP address change confirmation message is received, it indicates that the negotiation is completed.
The device for supporting address change according to claim 15, further comprising:

The transceiver module is configured to send the first keep-alive message to the peer device after the address update module changes the IP address of the connection from the first IP address to the second IP address, or When the second keep-alive message from the peer device is received, the keep-alive confirmation message of the second keep-alive message is sent to the peer device.
A storage medium having stored thereon a computer program, the computer program being executed by a processor to perform the steps of the method of any one of claims 1 to 6, or the method of any one of claims 7 to 10 step.