CN102833360A - Method and device for automatically generating Internet protocol (IP) address of off-line terminal - Google Patents

Abstract

The embodiment of the present invention discloses a method for automatically generating an IP address of an off-net terminal. The method obtains the unique identifier of the off-net terminal itself in the network; extracts the unique identifier as an intermediate code in digital form with a preset number of digits; through Binary-coded decimal BCD code method or bit extraction method to convert the intermediate code into an IP address. The invention also discloses a device for automatically generating an IP address of an off-net terminal. The method and device enable the off-net terminal to ensure the uniqueness of the IP address generated by itself without sending a detection message.

Description

A method and device for automatically generating an IP address of an off-network terminal

technical field

The invention relates to the technical field of network communication, in particular to a method and device for automatically generating an IP address of an off-network terminal.

Background technique

Currently, in many communication systems, the automatic generation of an IP address by a terminal device is mainly realized by interacting with a server through a Dynamic Host Configuration (DHCP) protocol.

When all the terminal devices in the network are running offline, if a terminal device in the network that executes the DHCP service fails, the terminal device cannot obtain an IP address, and the communication between the terminal devices cannot be realized; in order to solve the problem of offline status, The terminal device does not obtain the IP address through DHCP. In the prior art, the terminal usually adopts a certain strategy to realize the automatic generation of the IP address, so that the off-network terminal can realize end-to-end communication according to the automatically generated IP address.

However, in the prior art, after the off-net terminal automatically generates its own IP address, it still needs to send a detection message to other off-net terminal devices in the network to ensure that its own IP address is unique, which obviously increases the network load.

In addition, after the off-network terminal automatically generates an IP address, it needs to obtain the IP address of the peer device through the domain name system DNS in order to communicate with the peer device. The IP address of the network is unique, but because this method can only generate its own IP address, but cannot obtain the peer IP address, it still cannot achieve peer-to-peer communication.

Contents of the invention

In view of this, the present invention provides a method and device for automatically generating an IP address of an off-net terminal, so that the off-net terminal can ensure the uniqueness of the IP address generated by itself without sending a detection message.

For reaching above-mentioned purpose, technical scheme of the present invention is specifically realized like this:

A method for automatically generating an IP address of an off-net terminal, the method comprising:

Obtain the unique identification of the offline terminal itself in the network;

Extracting the unique identifier as an intermediate code in digital form with a preset number of digits;

The intermediate code is converted into an IP address by using a binary-coded decimal BCD code method or a bit extraction method.

Preferably, the method further comprises:

Obtain the unique identifier of the peer device in the network;

According to the method for converting the unique identifier into an IP address, the unique identifier of the peer device in the network is converted into an IP address;

Perform end-to-end communication with the peer device according to the IP address of the peer device.

Preferably, the IP address is an IPv4 address.

Preferably, said intermediate code in digital form that extracts said unique identifier as a preset number of digits includes:

The unique identifier is extracted as an intermediate code in the form of 8-digit or 4-digit decimal numbers by padding or a hash algorithm to ensure uniqueness.

Preferably, the BCD code method includes:

The 8-digit or 4-digit intermediate code in the form of decimal numbers is converted into a binary 4-part IPv4 address through the 8421 code, and then each part of the binary number is converted into a decimal number to obtain a decimal, 4-part IPv4 address.

Preferably, the positioning method includes:

By taking the appropriate number of digits, the intermediate code in the form of 8-digit or 4-digit decimal numbers is directly converted into an IPv4 address in the form of decimal 4-parts.

Preferably, the IP address is an IPv6 address.

Preferably, said intermediate code in digital form that extracts said unique identifier as a preset number of digits includes:

The unique identifier is extracted as an intermediate code in the form of 16 or 8 decimal numbers by padding or a unique hash algorithm.

Preferably, the BCD code method includes:

Convert the intermediate code in the form of 16 or 8 decimal numbers into an IPv6 address host number in the form of binary 8-parts through the 8421 code, and then convert each part of the binary number into a decimal number to obtain a decimal, IPv6 address in the form of 8 parts host number;

Combining the IPv6 address host number with the pre-acquired IPv6 address prefix into a complete IPv6 address.

Preferably, the positioning method includes:

By taking the appropriate number of digits, the intermediate code in the form of 16 or 8 decimal numbers is directly converted into an IPv6 address host number in the form of 8 decimal parts;

Combining the IPv6 address host number with the pre-acquired IPv6 address prefix into a complete IPv6 address.

A device for automatically generating an IP address of an off-net terminal, the device comprising:

An identification acquisition module, configured to acquire the unique identification of the off-network terminal itself in the network;

The conversion module is connected with the identification acquisition module, and is used to extract the unique identification as a digital form intermediate code with a preset number of digits, and convert the intermediate code into IP address.

Preferably, the device further includes:

The peer acquisition module is used to obtain the unique identifier of the peer device in the network;

The conversion module is further connected with the peer acquisition module, and is used to extract the unique identifier of the peer device as a digital intermediate code with a preset number of digits, and convert the intermediate code of the peer device into IP address;

A communication module, connected to the conversion module, for performing end-to-end communication with the peer device according to the IP address of the peer device.

Preferably, the conversion module includes:

The extraction unit is used to extract the unique identifier into an intermediate code in the form of 8 or 4 decimal numbers through filling or a hash algorithm to ensure uniqueness;

The converting unit is connected with the extracting unit, and is used for converting the intermediate code in the form of 8-digit or 4-digit numbers into an IPv4 address by BCD code method or bit extraction method.

Preferably, the conversion unit converts the intermediate code in the form of 8-bit or 4-digit decimal numbers into an IPv4 address in the form of binary 4-parts through 8421 code, and then converts the binary numbers of each part into decimal numbers to obtain decimal, 4-part An IPv4 address of the form.

Preferably, the conversion unit directly converts the intermediate code in the form of 8-digit or 4-digit decimal numbers into an IPv4 address in the form of decimal 4-parts by taking an appropriate number of digits.

Preferably, the conversion module includes:

The extraction unit is used to extract the unique identifier into an intermediate code in the form of 16 or 8 decimal numbers through filling or a hash algorithm to ensure uniqueness;

The converting unit is connected with the extracting unit, and is used for converting the intermediate code in the form of 16-digit or 8-digit decimal numbers into an IPv6 address through BCD code method or bit extraction method.

Preferably, the conversion unit converts the intermediate code in the form of 16 or 8 decimal numbers into an IPv6 address host number in the form of binary 8 parts through 8421 code, and then converts the binary numbers of each part into decimal numbers to obtain decimal, 8-part IPv6 address host number;

Combining the IPv6 address host number with the pre-acquired IPv6 address prefix into a complete IPv6 address.

Preferably, the conversion unit directly converts the intermediate code in the form of 16 or 8 digits into an IPv6 address in the form of decimal 8 parts by taking the appropriate number of digits;

Combining the IPv6 address host number with the pre-acquired IPv6 address prefix into a complete IPv6 address.

It can be seen from the above technical solution that the method and device for automatically generating the IP address of the off-net terminal of the present invention utilizes a certain unique identifier of the off-net terminal itself in the network, converts it into an IP address through a specific algorithm, and uniquely identifies it The uniqueness of the converted IP address ensures the uniqueness of the converted IP address, so there is no need to send a uniqueness detection packet. In addition, the off-net terminal can use the same algorithm to obtain the IP address of the peer end through the unique identifier of the peer end, so that end-to-end communication can be realized without the support of the DNS system.

Description of drawings

FIG. 1 is a flowchart of a method for automatically generating an IP address of an off-network terminal according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an apparatus for automatically generating an IP address of an off-network terminal according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a conversion module according to an embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

The present invention mainly uses a certain unique identifier of the off-network terminal itself in the network, converts it into an IP address through a specific algorithm, and guarantees the uniqueness of the converted IP address with the uniqueness of the unique identifier, so there is no need to send a uniqueness detection message. In addition, the off-net terminal can use the same algorithm to obtain the IP address of the peer end through the unique identifier of the peer end, so that end-to-end communication can be realized without the support of the DNS system.

Fig. 1 is the flow chart of the IP address automatic generation method of the embodiment of the present invention, as shown in Fig. 1, the method comprises the following steps:

Step 101, obtaining the unique identifier of the off-network terminal itself in the network;

In the present invention, it is required that the off-net terminal must have an identifier for uniquely identifying the off-net terminal in the network except the IP address, such as a mobile phone number, a fixed-line number, etc. Of course, if there are multiple unique identifiers, you can choose one, or Unique identifiers in numerical form may be preferred.

Step 102, extracting the intermediate code in digital form with a preset number of digits from the unique identifier;

In this step, due to the different specific unique identifiers obtained, before converting it into an IP address, it needs to be extracted into a unified digital form intermediate code; and the number of bits of the specific intermediate code also needs to be determined according to whether the final converted IP address is IPv4 The address is still determined by the IPv6 address.

For an IPv4 address, it can be extracted as an 8-digit or 4-digit intermediate code in the form of decimal numbers. When extracting, if the unique identifier is in pure digital form and less than 8 digits, it can be complemented to 8 digits by means of complementing. If it is less than 4 digits, it can be supplemented to 4 digits or 8 digits; of course, if it is 4 digits or 8 digits, no complement is required, or 4 digits can be complemented to 8 digits. When supplementing, it is possible to supplement after or before the original number, or both before and after.

If the unique identifier is a combination of numbers and letters, or a decimal number greater than 8 digits, you can first use a custom hash algorithm to extract the unique identifier into 8-digit or 4-digit numbers. The hash algorithm must ensure the uniqueness of the conversion The specific algorithm is not limited in the present invention and can be customized.

For an IPv6 address, since an IPv6 address is composed of two parts: a 64-bit address prefix and a 64-bit host number, generally speaking, the address prefix is manually set on the terminal, or the terminal device automatically sends a periodic notification report from the router in the network segment. It is obtained in the article, so regardless of whether it is offline or not, the prefix part of the terminal address can be obtained in advance, so for the IPv6 address, it is only necessary to generate the host number part of the IPv6 address, and finally combine the prefix part with the generated host The complete IPv6 address can be obtained by combining the number parts.

Therefore, in this step, if an IPv6 address is generated, the unique identifier is extracted as an intermediate code in the form of a 16-digit or 8-digit decimal number. The specific extraction method is similar to that of an IPv4 address, except that the number of digits is different. detail.

Step 103, convert the intermediate code into an IP address by BCD code method or bit extraction method.

Same as step 102, when converting to an IP address, it is also necessary to determine the specific method according to whether the final converted IP address is an IPv4 address or an IPv6 address;

For an IPv4 address, after extracting the unique identifier as an intermediate code in the form of 8-digit or 4-digit decimal digits, it can be converted into an IPv4 address through the BCD code method or bit extraction method. Take a typical fixed-line number with a unique identifier of 8 digits as an example, such as 12345678, use the BCD code method to first convert the number 12345678 into a binary code, take the 8421 code as an example, 12345678 will be converted into 0001(1)0010(2 )0011(3)0100(4)0101(5)0110(6)0111(7)1000(8) is divided into 4 parts according to the form of IPv4 address, which is expressed as 00010010.00110100.01010110.01111000, and the binary number of each part Converted to decimal, the IPv4 address is 18.52.86.120; if the bit method is used, the appropriate number of digits is directly taken, and 12345678 is converted into the 4-part form of the IPv4 address. The "appropriate number of digits" here refers to Satisfy the 4-part form of an IPv4 address, and each part conforms to the address range of an IPv4 address; for example, if each of the 4 parts takes two bits, the IPv4 address is 12.34.56.78, or the first part takes 3 bits and the second part takes 1 bit , the latter two parts take 2 bits, and the IPv4 address is 123.4.56.78. In addition, the address range of the IPv4 address should be considered when selecting bits, and each part cannot exceed 255. If the bit selection is 12.345.6.78, then part of 345 exceeds 255, so such bit selection is inappropriate. The 4-digit number is converted into an IPv4 address through the BCD code method and the digit method in the same way, for example, 1234, using the BCD code and the digit method, the converted IPv4 address is 1.2.3.4.

For IPv6 addresses, BCD code method and bit method can also be used for conversion. The conversion method is similar to IPv4 addresses, except that it needs to be converted into an IPv6 address host number in the form of 8 decimal numbers, which will not be described in detail here. In addition, It should be noted that the host number of the IPv6 address is obtained after conversion, and the complete IPv6 address needs to be obtained by combining the converted IPv6 address host number with the pre-obtained IPv6 address prefix. Similar to an IPv4 address, for an IPv6 address, "appropriate number of digits" refers to the 8-part format that satisfies the IPv6 address after taking the digits, and each part conforms to the address range of the IPv6 address.

In addition, after obtaining its own IPv4 or IPv6 address, if subsequent peer-to-peer communication is to be carried out, it can continue to obtain the unique identifier of the peer device, for example, through the list of unique identifiers of the peer device saved in the offline terminal, a typical For example, the list of mobile phone numbers and fixed-line numbers in the address book, or the peer number manually entered by the user; after that, the same conversion method as above can be used to obtain the IPv4 or IPv6 address of the peer, so that the subsequent peer-to-peer can be directly carried out Communication without the need for the DNS system to resolve the peer number.

In addition, the present invention also provides a device for automatically generating an IP address for an off-network terminal, as shown in Figure 2, including:

An identification acquisition module 201, configured to acquire the unique identification of the offline terminal itself in the network;

The conversion module 202 is connected with the identification acquisition module 201, and is used for extracting the unique identification as a digital form intermediate code with a preset number of digits, and converting the intermediate code through the binary-coded decimal BCD code method or the bit extraction method Convert to IP address.

In order to realize end-to-end communication, the device may further include:

The peer acquisition module 203 is configured to acquire the unique identifier of the peer device in the network;

The conversion module 202 is further connected with the peer acquisition module 203, and is used to extract the unique identifier of the peer device as a digital intermediate code with a preset number of digits, and convert the intermediate code of the peer device to Convert to IP address;

The communication module 204 is connected with the conversion module 202, and is configured to perform peer-to-peer communication with the peer device according to the IP address of the peer device.

According to the difference of the IP address (IPv4 or IPv6 address) that needs to be converted finally, the specific structure of the conversion module 202 in the above device will also be different.

For IPv4 address, described conversion module 202 comprises as shown in Figure 3:

An extraction unit 301, configured to convert the unique identifier into an intermediate code in the form of 8-digit or 4-digit decimal numbers through complementation or a hash algorithm;

The conversion unit 302 is connected with the digital conversion unit 301, and is used for converting the intermediate code in the form of 8-digit or 4-digit decimal numbers into an IPv4 address through the BCD code method or bit extraction method.

Wherein, the conversion unit 302 can specifically convert the intermediate code in the form of 8-digit or 4-digit decimal numbers into an IPv4 address in the form of binary 4-parts through the 8421 code, and then convert each part of the binary number into a decimal number to obtain a decimal number, 4 A partial form of an IPv4 address.

Alternatively, the conversion unit 302 may directly convert the intermediate code in the form of 8-digit or 4-digit numbers into an IPv4 address in decimal 4-part form by taking appropriate digits.

For the IPv6 address, the structure of the conversion module 202 is similar, and also includes an extraction unit 301 and a conversion unit 302. The difference is that

The extraction unit 301 will be used to convert the unique identifier into an intermediate code in the form of 16-digit or 8-digit decimal numbers through complementation or a hash algorithm;

The conversion unit 302 is connected with the digital conversion unit 301, and is used to convert the intermediate code in the form of 16-digit or 8-digit decimal numbers into an IPv6 address by BCD code method or bit extraction method.

Wherein, the conversion unit 302 can specifically convert the intermediate code in the form of 16 or 8 decimal numbers into an IPv6 address in the form of binary 8 parts through 8421 code, and then convert each part of the binary number into a decimal number to obtain decimal, 8 An IPv6 address host number in a partial form; and then combine the IPv6 address host number with a pre-acquired IPv6 address prefix to form a complete IPv6 address.

Or, the conversion unit 302 can directly convert the intermediate code in the form of 16 or 8 digits into the IPv6 address host number in the form of decimal 8 parts by taking appropriate number of digits; The obtained IPv6 address prefix is combined into a complete IPv6 address.

In the foregoing embodiments, for specific operations performed by each module and unit, reference may be made to the conversion part of the foregoing method embodiments, which will not be repeated here.

It can be seen from the above-mentioned embodiments that the method and device for automatically generating the IP address of the off-net terminal of the present invention utilizes a certain unique identifier of the off-net terminal itself in the network, and converts it into an IPv4 or IPv6 address through a specific algorithm, The uniqueness of the unique identifier is used to ensure the uniqueness of the converted IPv4 or IPv6 address, so there is no need to send a uniqueness detection message. In addition, the off-net terminal can use the same algorithm to obtain the IPv4 or IPv6 address of the peer end through the unique identifier of the peer end, so that end-to-end communication can be realized without the support of the DNS system.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (18)

1. an IP address automatic generation method of an off-network terminal, it is characterized in that, the method comprises: Obtain the unique identification of the offline terminal itself in the network; Extracting the unique identifier as an intermediate code in digital form with a preset number of digits; The intermediate code is converted into an IP address by using a binary-coded decimal BCD code method or a bit extraction method. 2. the IP address automatic generation method of offline terminal as claimed in claim 1, is characterized in that, this method further comprises: Obtain the unique identifier of the peer device in the network; According to the method for converting the unique identifier into an IP address, the unique identifier of the peer device in the network is converted into an IP address; Perform end-to-end communication with the peer device according to the IP address of the peer device. 3. The method for automatically generating an IP address of an offline terminal as claimed in claim 1 or 2, wherein the IP address is an IPv4 address. 4. the IP address automatic generation method of off-network terminal as claimed in claim 3, is characterized in that, described unique identification is extracted as the digital form intermediate code of preset number of digits and comprises: The unique identifier is extracted as an intermediate code in the form of 8-digit or 4-digit decimal numbers by padding or a hash algorithm to ensure uniqueness. 5. the IP address automatic generation method of offline terminal as claimed in claim 4, is characterized in that, described BCD code method comprises: The 8-digit or 4-digit intermediate code in the form of decimal numbers is converted into a binary 4-part IPv4 address through the 8421 code, and then each part of the binary number is converted into a decimal number to obtain a decimal, 4-part IPv4 address. 6. the IP address automatic generation method of off-network terminal as claimed in claim 4, is characterized in that, described location method comprises: By taking the appropriate number of digits, the intermediate code in the form of 8-digit or 4-digit decimal numbers is directly converted into an IPv4 address in the form of decimal 4-parts. 7. The method for automatically generating an IP address of an offline terminal as claimed in claim 1 or 2, wherein the IP address is an IPv6 address. 8. the IP address automatic generation method of off-network terminal as claimed in claim 7, is characterized in that, described unique identification is extracted as the digital form intermediate code of preset number of digits and comprises: The unique identifier is extracted as an intermediate code in the form of 16 or 8 decimal numbers by padding or a unique hash algorithm. 9. the IP address automatic generation method of off-network terminal as claimed in claim 8, is characterized in that, described BCD code method comprises: Convert the intermediate code in the form of 16 or 8 decimal numbers into an IPv6 address host number in the form of binary 8-parts through the 8421 code, and then convert each part of the binary number into a decimal number to obtain a decimal, IPv6 address in the form of 8 parts host number; Combining the IPv6 address host number with the pre-acquired IPv6 address prefix into a complete IPv6 address. 10. the IP address automatic generation method of off-network terminal as claimed in claim 8, is characterized in that, described location method comprises: By taking the appropriate number of digits, the intermediate code in the form of 16 or 8 decimal numbers is directly converted into an IPv6 address host number in the form of 8 decimal parts; Combining the IPv6 address host number with the pre-acquired IPv6 address prefix into a complete IPv6 address. 11. A device for automatically generating an IP address of an off-net terminal, characterized in that the device comprises: An identification acquisition module, configured to acquire the unique identification of the off-network terminal itself in the network; The conversion module is connected with the identification acquisition module, and is used to extract the unique identification as a digital form intermediate code with a preset number of digits, and convert the intermediate code into IP address. 12. the IP address automatic generating device of off-network terminal as claimed in claim 11, is characterized in that, this device further comprises: The peer acquisition module is used to obtain the unique identifier of the peer device in the network; The conversion module is further connected with the peer acquisition module, and is used to extract the unique identifier of the peer device as a digital intermediate code with a preset number of digits, and convert the intermediate code of the peer device into IP address; A communication module, connected to the conversion module, for performing end-to-end communication with the peer device according to the IP address of the peer device. 13. The device for automatically generating the IP address of the offline terminal as claimed in claim 11 or 12, wherein the conversion module comprises: The extraction unit is used to extract the unique identifier into an intermediate code in the form of 8 or 4 decimal numbers through filling or a hash algorithm to ensure uniqueness; The converting unit is connected with the extracting unit, and is used for converting the intermediate code in the form of 8-digit or 4-digit numbers into an IPv4 address by BCD code method or bit extraction method. 14. The device for automatically generating the IP address of an off-net terminal as claimed in claim 13, wherein the conversion unit converts the intermediate code of 8 or 4 decimal numbers into binary 4-part form IPv4 by 8421 codes. address, and then convert the binary digits of each part into decimal digits to obtain a decimal, 4-part IPv4 address. 15. The device for automatically generating the IP address of an off-network terminal as claimed in claim 13, wherein the conversion unit directly converts the intermediate code of 8 or 4 decimal numbers into decimal by taking an appropriate number of digits IPv4 address in 4-part form. 16. The device for automatically generating the IP address of the offline terminal as claimed in claim 11 or 12, wherein the conversion module comprises: The extraction unit is used to extract the unique identifier into an intermediate code in the form of 16 or 8 decimal numbers through filling or a hash algorithm to ensure uniqueness; The converting unit is connected with the extracting unit, and is used for converting the intermediate code in the form of 16-digit or 8-digit decimal numbers into an IPv6 address through BCD code method or bit extraction method. 17. The device for automatically generating an IP address of an off-network terminal as claimed in claim 16, wherein the conversion unit converts the intermediate code of 16 or 8 decimal numbers into binary 8-part form IPv6 by 8421 code The host number of the address, and then convert each part of the binary number into a decimal number to obtain a decimal, 8-part form of the IPv6 address host number; Combining the IPv6 address host number with the pre-acquired IPv6 address prefix into a complete IPv6 address. 18. The device for automatically generating the IP address of an off-network terminal as claimed in claim 16, wherein the conversion unit directly converts the intermediate code of 16 or 8 digits into decimal 8 by taking suitable digits. Partial forms of IPv6 addresses; Combining the IPv6 address host number with the pre-acquired IPv6 address prefix into a complete IPv6 address.

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