CN105634810A - Method, system and accessing device for accessing universal plug-and-play device - Google Patents

Abstract

The invention is applicable to the field of communication, and provides a method and system for accessing a universal plug and play device, and an access device. The method includes: the access device obtains the device information of the UPnP device from the server; if the access device does not obtain the first IP address from the device information, obtains the corresponding second IP address according to the device number in the device information, and passes the first IP address Two IP addresses establish an access connection with the UPnP device, the first IP address refers to the IP address used to access the UPnP device through the wide area network, and the second IP address refers to the IP address used to establish point-to-point communication with the UPnP device IP address. When a UPnP device is connected to a second-level route or a lower-level route, the UPnP device usually does not have a first IP address, so it cannot upload the first IP address to the server. At this time, the access device can use the second IP address. Establish an access connection with a UPnP device.

Description

Method and system for accessing universal plug and play device, access device

technical field

The invention belongs to the communication field, and in particular relates to a method and system for accessing a universal plug and play device, and an access device.

Background technique

In current network applications, Universal Plug and Play (UPnP) technology is used in more and more scenarios; In this case, using the UPnP service, the access device can successfully access the UPnP device through the first-level route. However, if the UPnP device is connected to a second-level route or a lower-level route, the access device cannot access the UPnP device through the UPnP service.

Contents of the invention

In view of this, the present invention provides a method and system for accessing UPnP devices, and an access device, so that even if the UPnP device is connected to a second-level route or a lower-level route, the access device can still establish a connection with the UPnP device. access connection.

In one aspect, the present invention provides a method for accessing a UPnP device, the method comprising:

The access device obtains the device information of the Universal Plug and Play UPnP device from the server;

If the access device does not obtain the IP address of the interconnection protocol between the first networks from the device information, the access device obtains the corresponding second IP address according to the device number in the device information, and uses the The second IP address establishes an access connection with the UPnP device;

Wherein, the first IP address refers to an IP address used to access the UPnP device through a wide area network, and the second IP address refers to an IP address used to establish point-to-point P2P communication with the UPnP device.

In another aspect, the present invention provides an access device, and the access device includes:

An information obtaining unit, configured for the access device to obtain the device information of the UPnP device from the server;

An access establishment unit, configured to obtain, according to the device number in the device information, the corresponding second IP address, and establish an access connection with the UPnP device through the second IP address, wherein the first IP address refers to the IP address used to access the UPnP device through a wide area network, and the second IP address refers to the IP address used to access the UPnP device through a wide area network, and the second IP address refers to the IP address used to access the UPnP device through a wide area network, and the second IP address establishes an access connection with the UPnP device. Refers to the IP address used to establish point-to-point P2P communication with the UPnP device.

In another aspect, the present invention provides a system for accessing UPnP devices, the system comprising:

UPnP devices, servers and access devices;

The UPnP device is used to detect the IP address of the currently connected router WAN port, if the IP address of the WAN port belongs to the local area network address in the TCP/IP protocol, then report to the server the device containing the device number of the UPnP device Information; if the IP address of the WAN port does not belong to the LAN address, then report to the server the device information including the IP of the WAN port and the device number of the UPNP UPnP device;

The server is configured to store the device information reported by the UPnP device;

The access device is configured to obtain the device information of the Universal Plug and Play UPnP device from the server, the device information includes a device number; if the access device does not obtain the first network from the device information The IP address of the interconnection protocol, then obtain the corresponding second IP address according to the device number in the device information, and establish an access connection with the UPnP device through the second IP address; wherein, the first An IP address refers to an IP address used to access the UPnP device through a wide area network, and the second IP address refers to an IP address used to establish point-to-point P2P communication with the UPnP device.

Compared with the prior art, the present invention has the beneficial effects that: when a UPnP device is connected to a second-level route or a lower-level route, the UPnP device usually does not have a first IP address, so the first IP address cannot be uploaded to the server. In this case, the access device can establish an access connection with the UPnP device through the second IP address.

Description of drawings

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

FIG. 1 is a schematic flowchart of a method for accessing a UPnP device provided by an embodiment of the present invention;

FIG. 2 is a schematic flowchart of a method for accessing a UPnP device provided by an embodiment of the present invention;

FIG. 3 is a structural diagram of an access device provided by an embodiment of the present invention;

Fig. 4 is a structural diagram of a system for accessing UPnP devices provided by an embodiment of the present invention.

detailed description

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 in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

The applicable scene of the embodiment of the present invention includes access device, server, router and UPnP device; the access device can be any communicable device that expects to access the UPnP device through the network; wherein the server is only an example of the embodiment of the present invention, and other Devices with processing and storage capabilities replace the server; for the definitions of routers and UPnP devices, refer to the official definitions in the field of communications. Of course, the specific types and models of routers and UPnP devices are not limited here. The UPnP device may be connected to a first-level route, or a second-level route or a lower-level route; in the prior art, if the UPnP device is connected to a second-level route or a lower-level route, then the access device passes The UPnP service cannot access the UPnP device; but in the embodiment of the present invention, the access connection between the access device and the UPnP device will be established by means of P2P communication; the access connection described in the embodiment of the present invention refers to the use of the UPnP device The IP address establishes a communication connection with the UPnP device.

If the UPnP device is connected to a second-level route or a lower-level route, the reason why the access device cannot access the UPnP device through the WAN IP address may be the following two reasons.

First, the UPnP device obtains the IP address of the Wide Area Network (WAN) port it has, and if the obtained IP address belongs to the LAN address in the TCP/IP protocol, it is determined that the UPnP device is connected to a non-level router (that is, the UPnP device is connected to the second-level route or a lower-level route), the UPnP device does not report the IP address to the server, but only the device number; at this time, the access device cannot obtain the device carrying the WAN IP address from the server information, so it is impossible to establish an access connection with UPnP devices through the WAN.

According to Transmission Control Protocol/Internet Protocol (Transmission Control Protocol/Internet Protocol, referred to as TCP/IP), IP addresses are divided into 5 categories, of which 3 areas are reserved in each of the three categories A, B, and C as LAN addresses, which are used for LANs. IP addresses and LAN addresses cannot appear on the WAN, and can only be used in the internal network. All routers cannot send out datagrams whose destination address is the LAN address; these three LAN address segments are as follows:

Class A address: 10.0.0.0～10.255.255.255;

Class B address: 172.16.0.0～172.31.255.255;

Class C address: 192.168.0.0～192.168.255.255.

Second, if the IP address of the WAN port has been modified and the modified IP address is not a LAN address, then the UPnP device will report the IP address to the server; at this time, the device information obtained by the access device from the server contains This IP address, as long as the UPnP device is connected to a non-first-level router, even if the access device uses this IP address to establish an access connection with this IP address, it is because the IP address reported by the UPnP device is invalid, resulting in the establishment of a Access connection failed.

In the embodiment of the present invention, after the UPnP device starts, the UPnP device will check the IP address of the router WAN port currently connected; To report the IP address, only the device number of the UPnP device is reported; if the IP address of the WAN port does not belong to the LAN address, the UPnP device reports the IP of the WAN port and the device number of the UPnP device to the server.

In this way, the server will record the device number of the access device, and also record the binding relationship between the device number of the access device and the device number of the UPnP device. A binding relationship, so that the access device can access multiple UPnP devices.

method embodiment

Referring to FIG. 2, the method for accessing a UPnP device includes step S101 and step S102.

In step S101, the access device acquires device information of the UPnP device from a server.

Specifically, the access device sends a request to the server, and the request records the device number of the access device; later, the server screens out the binding relationship between the access device and one or more UPnP devices according to the device number of the access device; One or more binding relationships of the access device, the user can operate the access device to specify the desired UPnP device, and download the device information of the desired UPnP device from the server, the device information may include the first IP address of the UPnP device , the first IP address refers to the IP address used to access the UPnP device through the wide area network; the device information also includes at least a device number of the UPnP device, and the device number is used to uniquely identify the UPnP device.

Step S102, if the access device does not obtain the first IP address from the device information, the access device obtains the corresponding second IP address according to the device number in the device information, and uses the second IP address to establish an access connection with the UPnP device.

If step S102 does not obtain the first IP address from the device information, it means that the access device cannot use the first IP address to establish an access connection with the UPnP device through the wide area network; at this time, the embodiment of the present invention changes the angle To establish an access connection, the access device uses the second IP address to try to establish a P2P communication access connection with the UPnP device.

If the access device successfully establishes an access connection with the UPnP device using the second IP address recorded in the device information, the access device uses the second IP address as an IP address for accessing the UPnP device by default.

Wherein, the second IP address refers to an IP address used to establish P2P communication with the UPnP device. It should be noted that, in a P2P network, since its IP address has a fixed encoding format, a device connected to the P2P network can obtain a corresponding IP address according to its device number.

Optionally, referring to FIG. 2 , the method includes step S103 and step S104.

Step S103, if the access device obtains the first IP address from the device information, the access device uses the first IP address to request to establish an access connection with the UPnP device.

Specifically, the access device uses the first IP address to send a connection establishment request to the UPnP device, if the connection establishment request is forwarded to the UPnP device through the router connected to the UPnP device; the UPnP device receives The establishment of the connection request, and return to the access device to access the correct status code, of course, the status code still needs to be forwarded by the router connected to the UPnP device before reaching the access device; the access device receives the status code, And according to the status code, it is determined that the access connection has been successfully established with the UPnP device. If the access device uses the first IP address to successfully establish an access connection with the UPnP device, the access device uses the first IP address as an IP address for accessing the UPnP device by default.

On the contrary, if the UPnP device does not receive the connection establishment request sent by the access device, or the access device does not set the first time at the first time (the first time can be set according to industry regulations, of course, the first time can also be set artificially) Time) will cause the access device to determine that the access connection with the UPnP device has not been successfully established using the first IP address, that is, the access device request fails.

Step S104, if the access device request fails, the access device uses the second IP address to establish an access connection with the UPnP device.

Specifically, if the request of the access device fails, the access device uses the second IP address to request to establish a P2P communication access connection with the UPnP device. It is similar to the implementation manner of establishing an access connection with the UPnP device, and will not be repeated here. If the access device receives the status code used to establish the P2P communication access connection fed back by the UPnP device, the access device determines that the P2P communication access connection is successfully established with the UPnP device.

If the access device successfully establishes an access connection with the UPnP device by using the second IP address, the access device uses the second IP address as an IP address for accessing the UPnP device by default.

On the contrary, if the UPnP device does not receive the connection establishment request for establishing P2P communication sent by the access device, or the access device fails to set the second time within the second time (the second time can be set according to industry regulations, of course, it can also be set artificially) If the status code (the status code used by the UPnP device to establish the P2P communication access connection fed back by the UPnP device) is received within the second time), the access device determines that the establishment of the P2P connection has timed out, and the access device uses the second IP address to communicate with the UPnP The device failed to establish a P2P connection.

In this embodiment of the present invention, if the access device successfully establishes an access connection with the UPnP device using the first IP address, and the access connection is disconnected during the process of the access device accessing the UPnP device, the present invention The embodiment provides the first solution.

In the first solution, when the access connection is disconnected during the process of the access device using the first IP address to access the UPnP device, the access device uses the second IP address to establish a connection with the UPnP device access connection. The specific implementation of the first coping method is as follows:

The access device sends an HTTP request to the UPnP device using the first IP address, but does not get a response from the UPnP device;

The access device changes the IP address of the access UPnP device to the second IP address of the P2P communication, and uses the second IP address to resend the HTTP request to the UPnP device; if the UPnP device receives the HTTP request, it returns the correct access status code.

If the access device does not receive the status code returned by the UPnP device within the second time, it is determined that the connection has timed out. If the access device successfully receives the status code returned by the UPnP device within the second time, the default IP address of the access UPnP device is changed to the second IP address used for establishing P2P communication with the UPnP device.

In the embodiment of the present invention, if the access device uses the second IP address to successfully establish an access connection with the UPnP device, and the access connection is disconnected during the process of the access device accessing the UPnP device, the present invention The embodiment provides a second solution.

In the second solution, when the access connection is disconnected during the process of the access device using the second IP address to access the UPnP device, the access device obtains the device information of the UPnP device from the server again ; If the access device obtains the new first IP address from the reacquired device information, the access device uses the new first IP address to request to establish an access connection with the UPnP device. The specific implementation of the second coping method is as follows:

The access device uses the second IP address to send an HTTP request to the UPnP device, but does not get a response to the HTTP request from the UPnP device.

The access device accesses the server to obtain the latest device information of the UPnP device.

If the latest device information does not have a new first IP address, or the first IP address recorded in the latest device information is the same as the original one, then it is determined that the connection has timed out.

If there is a new first IP address recorded in the latest device information, a connection establishment request is sent to the UPnP device through the new first IP address; if the UPnP device receives the connection establishment request, it returns a correct access status code.

If the access device does not receive the status code returned by the UPnP device within the first time, it is determined that the connection has timed out. If the access device successfully receives the status code returned by the UPnP device within the first time, change the default IP address of the access UPnP device to the latest first IP address.

Device example:

It should be noted that the access device provided by the device embodiment corresponds to the above method embodiment and can implement the above method embodiment. Therefore, for the specific implementation of each unit included in the access device, refer to the corresponding description in the method embodiment.

The access device provided by this device embodiment, see Figure 3, the access device includes:

An information obtaining unit 31, configured for the access device to obtain the device information of the UPnP device from the server;

An access establishment unit 32, configured to if the access device does not obtain a first IP address from the device information, the first IP address refers to an IP address used to access the UPnP device through a wide area network, and the access The device obtains a corresponding second IP address according to the device number in the device information, and establishes an access connection with the UPnP device through the second IP address, where the second IP address refers to the The IP address for the device to establish P2P communication.

Optionally, the access establishment unit 32 is further configured to: if the access device obtains the first IP address from the device information, the access device uses the first IP address to request a connection with the UPnP The device establishes an access connection; if the access device request fails, the access device uses the second IP address to establish an access connection with the UPnP device.

Optionally, the access establishment unit 32 is further configured to: if the access device successfully establishes an access connection with the UPnP device using the first IP address, the access device uses the first IP address as a default access to the UPnP device. The IP address of the UPnP device; if the access device uses the second IP address to successfully establish an access connection with the UPnP device, the access device uses the second IP address as the IP address for accessing the UPnP device by default.

Optionally, the access establishing unit 32 is further configured to: when the access connection is disconnected during the process of the access device using the first IP address to access the UPnP device, the access device uses the second IP address to access the UPnP device. IP address to establish an access connection with the UPnP device.

Optionally, the access establishment unit 32 is further configured to, when the access connection is disconnected during the process of the access device using the second IP address to access the UPnP device, the access device restarts the UPnP device from the server. Obtaining the device information of the UPnP device; if the access device obtains the new first IP address from the reacquired device information, the access device uses the new first IP address to request a connection with the UPnP device. The device establishes an access connection.

Those skilled in the art can understand that the various units included in the above-mentioned device embodiments are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit are also It is only for the convenience of distinguishing each other, and is not intended to limit the protection scope of the present invention.

System embodiment:

FIG. 4 is a structural diagram of a system for accessing UPnP devices provided by an embodiment of the present invention. For ease of description, only parts related to the embodiments of the present invention are shown.

The system for accessing UPnP devices includes a Universal Plug and Play UPnP device 1, a server 2 and an access device 3;

The UPnP device 1 is used to detect the IP address of the currently connected router WAN port, if the IP address of the WAN port belongs to the local area network address in the TCP/IP protocol, then report the device number containing the UPnP device to the server 2 If the IP address of the WAN port does not belong to the LAN address, then report to the server 2 the device information that includes the IP of the WAN port and the device number of the UPNP UPnP device;

The server 2 is configured to store the device information reported by the UPnP device;

The access device 3 is configured to obtain the device information of the Universal Plug and Play UPnP device 1 from the server 2, the device information includes a device number; if the access device 3 is not obtained from the device information To the protocol IP address interconnected between the first network, obtain the corresponding second IP address according to the device number in the device information, and establish an access connection with the UPnP device 1 through the second IP address; Wherein, the first IP address refers to an IP address used to access the UPnP device 1 through a wide area network, and the second IP address refers to an IP address used to establish point-to-point P2P communication with the UPnP device 1 .

Further, the access device 3 is also used for:

If the access device obtains the first IP address from the device information, the access device uses the first IP address to request to establish an access connection with the UPnP device;

If the access device request fails, the access device uses the second IP address to establish an access connection with the UPnP device.

Further, the access device 3 is also used for:

If the access device uses the first IP address to successfully establish an access connection with the UPnP device, the access device uses the first IP address as an IP address for accessing the UPnP device by default;

If the access device successfully establishes an access connection with the UPnP device by using the second IP address, the access device uses the second IP address as an IP address for accessing the UPnP device by default.

Further, the access device 3 is also used for:

When the access connection is disconnected during the process of the access device using the first IP address to access the UPnP device, the access device uses the second IP address to establish an access connection with the UPnP device.

Further, the access device 3 is also used for:

When the access connection is disconnected when the access device uses the second IP address to access the UPnP device, the access device obtains the device information of the UPnP device from the server again;

If the access device acquires the new first IP address from the newly obtained device information, the access device uses the new first IP address to request to establish an access connection with the UPnP device.

For the specific working process of each device in the above system, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

Those of ordinary skill in the art can also understand that all or part of the steps in the method of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, so The storage medium mentioned above includes ROM/RAM, magnetic disk, optical disk, etc.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, several equivalent substitutions or obvious modifications are made without departing from the concept of the present invention, and the performance or use is the same, all should be regarded as belonging to the present invention by the submitted claims The scope of patent protection determined by the book.

Claims (10)

1. A method for accessing a Universal Plug and Play device, characterized in that the method comprises: The access device acquires device information of the Universal Plug and Play UPnP device from a server, where the device information includes a device number; If the access device does not obtain the IP address of the interconnection protocol between the first networks from the device information, the access device obtains the corresponding second IP address according to the device number in the device information, and uses the The second IP address establishes an access connection with the UPnP device; Wherein, the first IP address refers to an IP address used to access the UPnP device through a wide area network, and the second IP address refers to an IP address used to establish point-to-point P2P communication with the UPnP device. 2. The method for accessing a UPnP device as claimed in claim 1, wherein the method comprises: If the access device obtains the first IP address from the device information, the access device uses the first IP address to request to establish an access connection with the UPnP device; If the access device request fails, the access device uses the second IP address to establish an access connection with the UPnP device. 3. The method for accessing a UPnP device as claimed in claim 2, wherein the method further comprises: If the access device uses the first IP address to successfully establish an access connection with the UPnP device, the access device uses the first IP address as an IP address for accessing the UPnP device by default; If the access device successfully establishes an access connection with the UPnP device by using the second IP address, the access device uses the second IP address as an IP address for accessing the UPnP device by default. 4. The method for accessing a UPnP device as claimed in claim 1, wherein the method further comprises: When the access connection is disconnected during the process of the access device using the first IP address to access the UPnP device, the access device uses the second IP address to establish an access connection with the UPnP device. 5. The method for accessing a Universal Plug and Play device according to any one of claims 1 to 4, wherein the method further comprises: When the access connection is disconnected when the access device uses the second IP address to access the UPnP device, the access device obtains the device information of the UPnP device from the server again; If the access device acquires the new first IP address from the newly obtained device information, the access device uses the new first IP address to request to establish an access connection with the UPnP device. 6. The method for accessing a UPnP device as claimed in claim 1, further comprising: before the accessing device obtains the device information of the UPnP device from a server: The UPnP device detects the IP address of the currently connected router WAN port; If the IP address of the WAN port belongs to the local area network address in the TCP/IP protocol, the UPnP device reports to the server the device information comprising the device number of the UPnP device; if the IP address of the WAN port does not belong to the local area network address , the UPnP device reports to the server device information including the IP of the WAN port and the device number of the UPnP device. 7. An access device, characterized in that the access device comprises: An information obtaining unit, configured for the access device to obtain device information of the UPnP device from a server, where the device information includes a device number; An access establishment unit, configured to obtain, according to the device number in the device information, the corresponding second IP address, and establish an access connection with the UPnP device through the second IP address, wherein the first IP address refers to the IP address used to access the UPnP device through a wide area network, and the second IP address refers to the IP address used to access the UPnP device through a wide area network, and the second IP address refers to the IP address used to access the UPnP device through a wide area network, and the second IP address establishes an access connection with the UPnP device. Refers to the IP address used to establish point-to-point P2P communication with the UPnP device. 8. The access device of claim 7, wherein: The access establishment unit is further configured to, if the access device obtains the first IP address from the device information, the access device uses the first IP address to request to establish an access connection with the UPnP device; If the access device request fails, the access device uses the second IP address to establish an access connection with the UPnP device; The access establishment unit is further configured to use the first IP address as the default IP address for accessing the UPnP device if the access device successfully establishes an access connection with the UPnP device using the first IP address ; If the access device uses the second IP address to successfully establish an access connection with the UPnP device, the access device uses the second IP address as an IP address for accessing the UPnP device by default. 9. The access device of claim 7, wherein: The access establishment unit is further configured to use the second IP address to establish a connection with the UPnP device when the access connection is disconnected when the access device uses the first IP address to access the UPnP device. The access connection of the UPnP device; The access establishment unit is further configured to reacquire the UPnP device from the server when the access connection is disconnected during the process of the access device using the second IP address to access the UPnP device device information; if the access device obtains the new first IP address from the reacquired device information, the access device uses the new first IP address to request to establish an access connection with the UPnP device. 10. A system for accessing UPnP devices, characterized in that the system comprises: UPnP devices, servers and access devices; The UPnP device is used to detect the IP address of the currently connected router WAN port, if the IP address of the WAN port belongs to the local area network address in the TCP/IP protocol, then report to the server the device containing the device number of the UPnP device Information; if the IP address of the WAN port does not belong to the LAN address, then report to the server the device information including the IP of the WAN port and the device number of the UPNP UPnP device; The server is configured to store the device information reported by the UPnP device; The access device is configured to obtain device information of the Universal Plug and Play UPnP device from the server, where the device information includes a device number; if the access device does not obtain the first network from the device information The IP address of the interconnection protocol, then obtain the corresponding second IP address according to the device number in the device information, and establish an access connection with the UPnP device through the second IP address; wherein, the first An IP address refers to an IP address used to access the UPnP device through a wide area network, and the second IP address refers to an IP address used to establish point-to-point P2P communication with the UPnP device.