CN115914350A - Service discovery method and device, electronic device, storage medium - Google Patents

Abstract

The disclosure relates to a service discovery method and device, an electronic device and a storage medium. The method comprises the following steps: acquiring a target request, wherein the target request contains a target application parameter preset in a client; searching the target application parameter in an application parameter registration list to obtain a search result indicating whether the target application parameter is found; generating target response data which contains the search result and is matched with the target request; and feeding back the target response data to the client so that the client interacts data with the server after the target response data represents and discovers the target application parameters. In the embodiment, the target application parameters can be searched in the application parameter registration list without traversing all the application parameters in the application parameter registration list, so that the searching time is reduced, the data interaction time of two electronic devices through a Bluetooth link is shortened, and the improvement of the data interaction efficiency is facilitated.

Description

Service discovery method and device, electronic device, storage medium

technical field

The present disclosure relates to the technical field of communication, and in particular, to a service discovery method and device, electronic equipment, and a storage medium.

Background technique

Most of the existing electronic devices are equipped with a Bluetooth function. Taking Bluetooth Low Energy (BLE) as an example, the electronic device establishes a BLE link with other devices. After the two electronic devices establish a Bluetooth connection, the application that actively initiates the request is called the client (Client), and the application that passively receives the request is called the server (Server).

The above BLE link can be established based on the Generic Attribute Profile (GATT). After the BLE connection is established, the client starts to discover the GATT service. After discovering the peer service, it can exchange data through the characteristics of the corresponding service.

In the process of discovering services, the client must traverse all services (including Include and Characteristic) on the server before the two parties can perform data transmission. However, when the number of services registered on the server side is large, especially many services are not registered by the corresponding application, the above discovery process wastes a lot of time, resulting in a long time from the establishment of the connection to the transmission of data by the application.

Contents of the invention

The disclosure provides a service discovery method and device, electronic equipment, and a storage medium to solve the deficiencies of related technologies.

According to the first aspect of the embodiments of the present disclosure, a service discovery method is provided, which is applicable to a server, and the method includes:

Obtaining a target request, the target request containing preset target application parameters in the client;

Searching for the target application parameter in the application parameter registration list, and obtaining a search result indicating whether the target application parameter is found;

generating target response data that includes the search result and matches the target request;

The target response data is fed back to the client, so that the client exchanges data with the server after the target response data represents the discovery of target application parameters.

Optionally, the target application parameters include service, inclusion and feature.

Optionally, when the target application parameter includes a service, the target response data includes a service response; the service response includes an operation code, attribute type, result data, and attribute permission;

The operation code is the second operation code, the attribute type is the first attribute type, and the result data indicates whether the service is in the registration list.

Optionally, when the target application parameter includes include, the target response data includes include response; the include response includes opcode, attribute type and result data;

The opcode is a second opcode, the attribute type is a second attribute type, and the result data indicates whether the inclusion is in the registration list.

Optionally, when the target application parameters include features, the target response data includes feature responses; the feature responses include opcodes, attribute types, attribute permissions, feature UUIDs, and feature handles; the opcodes are the second Operation code, the attribute type is the third attribute type, the attribute permission indicates the type of data operation, the feature handle refers to the object to transmit the message, and the feature UUID indicates the identification code of the feature.

Optionally, the method also includes:

When receiving the link establishment request sent by the client, establish a bluetooth link with the client.

Optionally, the method also includes:

The search process is stopped after the target application parameters are searched.

According to a second aspect of an embodiment of the present disclosure, a service discovery method is provided, which is suitable for a client, and the method includes:

Obtain the preset target application parameters in the client;

Generate a target request containing the target application parameter and send it to the server, so that the server searches the application parameter registration list in response to the target request and returns target response data indicating whether the search result of the target application parameter is found ;

When the target response data indicates that target application parameters are found, data is exchanged with the server according to the target application parameters.

Optionally, the target application parameters include service, inclusion and feature.

Optionally, when the target application parameter includes a service, the target request includes a service request; the service request includes an operation code, an attribute type, and a service parameter UUID; the operation code is a first operation code, and the attribute Type is the first attribute type.

Optionally, when the target application parameter includes inclusion, the target request includes an inclusion request; the inclusion request includes an operation code, an attribute type, and an attribute permission; the operation code is a first operation code, and the attribute type is the second attribute type.

Optionally, when the target application parameter includes a feature, the target request includes a feature request; the feature request includes an opcode, an attribute type, and a feature UUID; the opcode is a first opcode, and the attribute type is the third attribute type.

Optionally, the method also includes:

Sending a link establishment request, so that the server establishes a bluetooth link with the client in response to the link establishment request.

According to a third aspect of the embodiments of the present disclosure, there is provided a service discovery device, which is suitable for a server, and the device includes:

A target request obtaining module, configured to obtain a target request, the target request containing preset target application parameters in the client;

A search result acquisition module, configured to search for the target application parameter in the application parameter registration list, and obtain a search result indicating whether the target application parameter is found;

A target response acquisition module, configured to generate target response data that includes the search result and matches the target request;

A target response feedback module, configured to feed back the target response data to the client, so that the client can exchange data with the server after the target response data represents the discovery of target application parameters.

Optionally, the target application parameters include service, inclusion and feature.

Optionally, when the target application parameter includes a service, the target response data includes a service response; the service response includes an operation code, attribute type, result data, and attribute permission;

The operation code is the second operation code, the attribute type is the first attribute type, and the result data indicates whether the service is in the registration list.

Optionally, when the target application parameter includes include, the target response data includes include response; the include response includes opcode, attribute type and result data;

The opcode is a second opcode, the attribute type is a second attribute type, and the result data indicates whether the inclusion is in the registration list.

Optionally, when the target application parameters include features, the target response data includes feature responses; the feature responses include opcodes, attribute types, attribute permissions, feature UUIDs, and feature handles; the opcodes are the second Operation code, the attribute type is the third attribute type, the attribute permission indicates the type of data operation, the feature handle refers to the object to transmit the message, and the feature UUID indicates the identification code of the feature.

Optionally, the device also includes:

The Bluetooth link establishment module is configured to establish a Bluetooth link with the client when receiving a link establishment request sent by the client.

Optionally, the device also includes:

A search stop module, configured to stop the search process after the target application parameters are searched.

According to a fourth aspect of an embodiment of the present disclosure, there is provided a service discovery apparatus, which is suitable for a client, and the apparatus includes:

A target parameter acquisition module, configured to acquire target application parameters preset in the client;

A target request generating module, configured to generate a target request containing the target application parameters and send it to the server, so that the server can search the application parameter registration list in response to the target request and return whether the target application parameters are found The target response data of the search results;

A data interaction module, configured to exchange data with the server according to the target application parameters after the target response data indicates that the target application parameters are found.

Optionally, the target application parameters include service, inclusion and feature.

Optionally, when the target application parameter includes a service, the target request includes a service request; the service request includes an operation code, an attribute type, and a service parameter UUID; the operation code is a first operation code, and the attribute Type is the first attribute type.

Optionally, when the target application parameter includes inclusion, the target request includes an inclusion request; the inclusion request includes an operation code, an attribute type, and an attribute permission; the operation code is a first operation code, and the attribute type is the second attribute type.

Optionally, when the target application parameter includes a feature, the target request includes a feature request; the feature request includes an opcode, an attribute type, and a feature UUID; the opcode is a first opcode, and the attribute type is the third attribute type.

Optionally, the device also includes:

A link request sending module, configured to send a link establishment request, so that the server can establish a bluetooth link with the client in response to the link establishment request.

According to a fifth aspect of the embodiments of the present disclosure, there is provided an electronic device, including:

memory and processor;

The memory is used to store a computer program executable by the processor;

The processor is configured to execute the computer program in the memory, so as to realize the above-mentioned method.

According to a sixth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, and when the executable computer program in the storage medium is executed by a processor, the above method can be realized.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

In the solution provided by the embodiments of the present disclosure, the target request can be obtained, and the target request contains the preset target application parameters in the client; then, the target application parameters are searched in the application parameter registration list to obtain whether the target is found Applying the search results of the parameters; afterward, generating target response data containing the search results and matching the target request; finally, feeding back the target response data to the client, so that the client is in the The target response data represents data exchanged with the server after the target application parameters are discovered. In this way, in this embodiment, the target application parameter can be searched in the application parameter registration list without traversing all the application parameters in the application parameter registration list, which reduces the search time, thereby shortening the data interaction time between two electronic devices through the Bluetooth link, which is beneficial Improve data interaction efficiency.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is a flowchart of a service discovery method according to an exemplary embodiment.

Fig. 2 is a schematic diagram showing a relationship of target application parameters according to an exemplary embodiment.

Fig. 3 is a flow chart showing another service discovery method according to an exemplary embodiment.

Fig. 4 is an interaction diagram between a client and a server according to an exemplary embodiment.

Fig. 5 is another interaction diagram between a client and a server according to an exemplary embodiment.

Fig. 6 is a block diagram showing an apparatus for service discovery according to an exemplary embodiment.

Fig. 7 is a block diagram showing an apparatus for service discovery according to an exemplary embodiment.

Fig. 8 is a block diagram of an electronic device according to an exemplary embodiment.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The exemplary described embodiments below do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with aspects of the present disclosure as recited in the appended claims. It should be noted that, in the case of no conflict, the features in the following embodiments and implementation manners can be combined with each other.

In order to solve the above technical problems, embodiments of the present disclosure provide a service discovery method and device, electronic equipment, and a storage medium. The above service discovery method can be applied to electronic devices with bluetooth function, such electronic devices may include but not limited to smart phones, smart watches, smart glasses, vehicle equipment, etc., which can be selected according to specific scenarios, and are not limited here. Considering that data exchange involves two electronic devices, one of them acts as a client (Client) and the other acts as a server (Server). To facilitate understanding of the solutions of the present disclosure, the present disclosure uses the client and the server as execution bodies to describe the solution of the service discovery method.

FIG. 1 is a flow chart of a service discovery method according to an exemplary embodiment. Referring to FIG. 1 , a service discovery method is applied to a server and includes steps 11 to 14.

In step 11, a target request is obtained, and the target request contains target application parameters preset in the client.

In this embodiment, the server can establish a Bluetooth link (that is, a BLE link) with the client. For example, a client can generate a link establishment request and broadcast it. The server can monitor the broadcast signal in the surrounding space, and can detect the local pairing information after receiving the above-mentioned link establishment request; when the identification code of the client in the link establishment request is in the list of paired devices in the server, the server A Bluetooth link can be established with the client, so that the server and the client complete the pairing and connection work.

In this embodiment, the server can communicate with the client through the Bluetooth link, so as to obtain the target request. Wherein, the target request includes target application parameters preset in the client. In an example, the target application parameters include service (Service), inclusion (Include) and characteristic (Characteristic). It can be understood that the above Bluetooth link is established based on the GATT protocol, and the relationship of the target application parameters configured in the GATT protocol is shown in FIG. 2 . The server and the client may include at least one service (Service) component, and each (Service) includes multiple inclusion (Include) and multiple characteristic (Characteristic) components.

In an example, when the target application parameter includes a service (Service), the target request includes a service request (Target Service Request). The service request includes an operation code (opcode, 1byte), an attribute type (AttributeType, 2bytes) and a service parameter UUID (Service UUID, 2bytes or 16bytes).

In this example, the above operation code is the first operation code, which is used to identify the command type sent by the peer end. In the GATT protocol, the opcode is 1 byte, and 0x01~0x23, 0x51 and 0xD2 are already occupied, so the above-mentioned first operation code uses the reserved bytes in the opcode, for example, the value of the first operation code is 0x25, 0x26 Or 0x27, etc., and the following uses the value of the first operation code 0x25 as an example to describe various solutions.

In this example, the above attribute type is the first attribute type (0x2801), which is used to identify the type of the application parameter sent by the peer end, that is, the service type. In the GATT protocol, 0x2801 is Service, 0x2802 is Include, and 0x2803 is Characteristic. In this example, the value of the first attribute type is 0x2801. In this example, the frame format of the service request is shown in Table 1.

Table 1 Frame format of Target Service Request

opcode(1byte) AttributeType (2bytes) Service UUID (2bytes or 16bytes) 0x25 0x2801 the

In an example, when the target application parameter includes (Include), the target request includes a target include request (Target Include Request). The include request includes an operation code (opcode, 1 byte), an attribute type (AttributeType, 2 bytes) and an include parameter UUID (Include UUID, 2 bytes or 16 bytes).

In this example, the operation code included in the request is the first operation code. For specific content, please refer to the content of the operation code of the service request, which will not be repeated here.

In this example, the above attribute type is the second attribute type, which is used to identify the type of the application parameter sent by the peer end, that is, the containing type. In this example, the value of the second attribute type is 0x2802.

In this example, the frame format of the Target Include Request is shown in Table 2.

Table 2 contains the frame format of the request

opcode(1byte) AttributeType (2bytes) Include UUID (2bytes or 16bytes) 0x25 0x2802 the

In an example, when the target application parameter includes a characteristic (Characteristic), the target request includes a characteristic request (Target Characteristic Request). The feature request includes an operation code (opcode, 1 byte), an attribute type (AttributeType, 2 bytes) and a characteristic parameter UUID (Characteristic UUID, 2 bytes or 16 bytes).

In this example, the operation code in the feature request is the first operation code. For specific content, please refer to the content of the operation code in the service request, which will not be repeated here.

In this example, the above attribute type is the third attribute type, which is used to identify the type of the application parameter sent by the peer end, that is, the feature type. In this example, the value of the third attribute type is 0x2803.

In this example, the frame format of the Target Characteristic Request is shown in Table 3.

Table 3 Frame format of feature request

opcode(1byte) AttributeType (2bytes) Characteristic UUID (2bytes or 16bytes) 0x25 0x2803 the

In this embodiment, after obtaining the target request, the server may obtain the target application parameters in the target request, that is, obtain the operation code corresponding to the target application parameters.

In step 12, the target application parameter is searched in the application parameter registration list, and a search result indicating whether the target application parameter is found is obtained.

In this embodiment, the server will register the three application parameters of service, inclusion and feature with the system, and store them in the corresponding application parameter registration list. In other words, an application parameter registration list is set in the server, such as a service registration list, an inclusion registration list, and a feature registration list.

In this embodiment, the server may search for the target application parameter in the application parameter registration list, so as to obtain a search result indicating whether the target application parameter is found.

For example, the server can determine the command type according to the operation code in the service request, that is, the first operation code 0x25 indicates a discovery command or a search command. Then, the server can determine which object (service, inclusion or feature) to look for according to the attribute type in the service request, that is, when the first attribute type is 0x2801, it means to find the service (Service); the server can determine whether the service UUID in the service request is located in within the service registration list. When the service UUID is in the service registration list, the server can obtain the search result of the discovered service; when the service UUID is not in the service registration list, the server can obtain the search result of the undiscovered service.

For another example, the server may determine the command type according to the operation code included in the request, that is, when the first operation code is 0x25, it means a discovery command or a search command. The server can determine which object (service, inclusion or feature) to search for according to the attribute type in the include request, that is, the second attribute type is 0x2802, which means to search for include (Include). The server can determine whether the containment UUID in the containment request is within the containment registration list. When the included UUID is included in the included registration list, the server can obtain the search result of found inclusion; when the included UUID is not located in the included registration list, the server can obtain the search result of not found included.

For another example, the server may determine the command type according to the operation code in the feature request, that is, when the first operation code is 0x25, it means a discovery command or a search command. The server can determine which object (service, inclusion or feature) to search for according to the attribute type in the feature request, that is, the third attribute type is 0x2803, which means to search for include (Include). The server can determine whether the UUID included in the feature request is in the feature registration list. When the feature UUID is in the feature registration list, the server can obtain the search result of the discovered feature; when the feature UUID is not in the feature registration list, the server can obtain the search result of the undiscovered feature.

In step 13, target response data containing the search result and matching the target request is generated.

In this embodiment, the server can generate target response data that includes the search result and matches the target request.

For example, when the target application parameter includes a service, the target response data includes a service response; the service response includes an operation code (opcode, 1 byte), an attribute type (AttributeType, 2 bytes), a result data (result, 1 byte) and an attribute permission (Attribute Permission, 1byte). Wherein, the operation code of the service response is the second operation code (0x26), which is used to indicate that the command type is the response type. The attribute type of the service response is the first attribute type (0x2801), which is used to indicate the service type; the result data of the service response indicates whether the service is in the registration list (for example, 0x00 means it exists, 0x01 means it does not exist); the attribute of the service response The permission indicates the type of data interaction (for example, 0x00 means readable, 0x01 means writable, 0x02 means readable and writable, etc.)

In this example, the frame format of the service response (Target Service Response) is shown in Table 4.

Table 4 The frame format of the service response

opcode(1byte) AttributeType (2bytes) result(1byte) 0x26 0x2801 0x00/0x01

As another example, when the target application parameter includes inclusion, the above-mentioned target response data includes inclusion response; the inclusion response includes operation code (opcode, 1 byte), attribute type (AttributeType, 2 bytes), result data (result, 1 byte) and attribute Permission (Attribute Permission, 1byte). Wherein, the operation code containing the response is the second operation code (0x26), which is used to indicate that the command type is the response type. The attribute type of the containment response is the second attribute type (0x2802), which is used to indicate the containment type. The result data of the inclusion response indicates whether the inclusion is in the registration list (for example, 0x00 means it exists, and 0x01 means it does not exist).

In this example, the frame format of Target Include Response is shown in Table 5.

Table 5 contains the frame format of the response

opcode(1byte) AttributeType (2bytes) result(1byte) 0x26 0x2802 0x00/0x01

For another example, when the target application parameter includes a feature, the above-mentioned target response data includes a feature response; the feature response includes an operation code (opcode, 1 byte), an attribute type (AttributeType, 2 bytes), an attribute permission (Attribute Permission, 1 byte), Characteristic properties (Characteristic Perperties, 1byte or 2byte), characteristic UUID (Characteristic UUID, 1byte) and characteristic handle (Characteristic handle, 2bytes). Wherein, the operation code of the characteristic response is the second operation code (0x26), which is used to indicate that the command type is a response type. The attribute type containing the response is the third attribute type (0x2803), which is used to represent the feature type. The attribute permission indicates the type of data operation (for example, 0x00 indicates readable, 0x01 indicates writable, 0x02 indicates readable and writable, etc.), the feature handle refers to the object to transmit the message, and the feature UUID indicates the identification code of the feature

In this example, the frame format of the Target Characteristic Response is shown in Table 6.

Table 6 Frame format of feature response

In step 14, the target response data is fed back to the client, so that the client interacts with the server after the target response data represents the discovery of target application parameters.

In this embodiment, the server may feed back target response data to the client. After receiving the above-mentioned target response data, the client can obtain the service, inclusion and characteristics; then establish a data transmission channel according to the above-mentioned service, inclusion and characteristics, and transmit the data according to the above-mentioned data transmission channel. In this way, the server and the client can exchange data through the above data transmission channel.

In this embodiment, the server can stop the search process after searching the target application parameters without traversing all registered application parameters.

So far, in the solution provided by the embodiments of the present disclosure, the target request can be obtained, and the target request contains the preset target application parameters in the client; then, the target application parameters are searched in the application parameter registration list to obtain the information indicating whether the target application parameters are found. the search result of the target application parameters; then, generate target response data containing the search result and matching with the target request; finally, feed back the target response data to the client, so that the client After the target response data represents the discovery of target application parameters, data is exchanged with the server. In this way, in this embodiment, the target application parameter can be searched in the application parameter registration list without traversing all the application parameters in the application parameter registration list, which reduces the search time, thereby shortening the data interaction time between two electronic devices through the Bluetooth link, which is beneficial Improve data interaction efficiency.

Fig. 3 is a flow chart of a service discovery method according to an exemplary embodiment. Referring to Fig. 3 , a service discovery method is applied to a client, including steps 31 to 33.

In step 31, the preset target application parameters in the client are acquired.

In this embodiment, referring to FIG. 4 , the client can establish a Bluetooth link (that is, a BLE link) with the server. For example, a client can generate a link establishment request and broadcast it. The server can monitor the broadcast signal in the surrounding space, and can detect the local pairing information after receiving the above-mentioned link establishment request; when the identification code of the client in the link establishment request is in the list of paired devices in the server, the server A Bluetooth link can be established with the client, so that the server and the client complete the pairing and connection work.

In this embodiment, the client may acquire target application parameters preset in the client. In an example, the target application parameters include service (Service), inclusion (Include) and characteristic (Characteristic). The client can obtain the service (Service), include (Include) and characteristic (Characteristic) in turn. Specifically, the client can obtain the service first, and then obtain the inclusion when it is determined that the service has been registered on the server; Get the characteristics when registering on the server.

In step 32, a target request containing the target application parameters is generated and sent to the server, so that the server searches the application parameter registration list in response to the target request and returns a query indicating whether the target application parameters are found The target response data for the result.

In this embodiment, continue referring to FIG. 4 , the client may generate a target request containing target application parameters and send it to the server. Wherein, for the target request, reference may be made to the relevant content in step 11, which will not be repeated here.

In this embodiment, after receiving the target request, the server can search for corresponding application parameters in the application parameter registration list, such as service, inclusion or feature, and generate target response data. Wherein, for the solutions of searching for application parameters and generating target response data, refer to the relevant contents of step 12 and step 13, and details are not repeated here.

In step 33, when the target response data indicates that target application parameters are found, data is exchanged with the server according to the target application parameters.

In this embodiment, after receiving the target response data, the client may determine the discovery service after sequentially determining the service, content and features in the target application parameters. At this time, the client and the server can exchange data according to the characteristics of the service.

It should be noted that, in related technologies, the following processes need to be completed before data interaction between the client and the server, as shown in Figure 5, including:

The client sends an aggregate type request (ATT_READ_BY_GROUP_TYPE_REQ) to the server, which is used to request the server to return the currently registered primary service (Primary Service). After receiving this collection type request, the server searches for services in the service registration list according to the preset size, and returns a frame of data as the search result. By analogy, after searching all the registered services, the server will search up to 65535 registered services but usually far less than 65535, and return the search results. Correspondingly, the client will receive several frames of service responses, for example, 4-10 frames. Upon receiving the service response, the client can determine whether the service UUID is a service registered in the server. When the service UUID is a registered service, the client will find the inclusion (Include) in the service, that is, send the read include command (ATT_READ_BY_TYPE_REQ), and query the process type of the service, the server will search for the registered inclusion in the service, and Return the included response according to the preset size until all the included registration lists are searched, so the client will receive several frames containing the response data. After determining the corresponding inclusion, the client will send a read characteristic command (ATT_READ_BY_TYPE_REQ), so that the server returns the registered characteristic. After determining the characteristics of the service, the client and the server can exchange data according to the characteristics of the service. Based on the above process analysis, before the data interaction between the client and the server, the client needs to receive multi-frame response data (service response, inclusion response, and feature response) in three stages, thus consuming more time. In this embodiment, the client and the server can realize data interaction through 4 request processes and receiving 4 frames of response data, and the service search time is reduced to a quarter of the original one.

So far, in the solutions provided by the embodiments of the present disclosure, the preset target application parameters in the client can be obtained; a target request containing the target application parameters can be generated and sent to the server, so that the server can respond to the target request Search the application parameter registration list and return target response data indicating whether the target application parameter is found; when the target response data indicates that the target application parameter is found, interact data with the server according to the target application parameter. In this way, in this embodiment, the client can exchange data with the server by only sending 4 requests and receiving 4 responses, shortening the data interaction time and improving data interaction efficiency.

On the basis of a service discovery method provided by an embodiment of the present disclosure, the present disclosure also provides a service discovery device, which is suitable for a server, see FIG. 6 , the device includes:

A target request acquiring module 61, configured to acquire a target request, the target request containing preset target application parameters in the client;

A search result acquisition module 62, configured to search for the target application parameter in the application parameter registration list, and obtain a search result indicating whether the target application parameter is found;

A target response acquisition module 63, configured to generate target response data that includes the search result and matches the target request;

The target response feedback module 64 is configured to feed back the target response data to the client, so that the client can exchange data with the server after the target response data represents the discovery of target application parameters.

Optionally, the target application parameters include service, inclusion and feature.

Optionally, when the target application parameter includes a service, the target response data includes a service response; the service response includes an operation code, attribute type, result data, and attribute permission;

The operation code is the second operation code, the attribute type is the first attribute type, and the result data indicates whether the service is in the registration list.

Optionally, when the target application parameter includes include, the target response data includes include response; the include response includes opcode, attribute type and result data;

The opcode is a second opcode, the attribute type is a second attribute type, and the result data indicates whether the inclusion is in the registration list.

Optionally, when the target application parameters include features, the target response data includes feature responses; the feature responses include opcodes, attribute types, attribute permissions, feature UUIDs, and feature handles; the opcodes are the second Operation code, the attribute type is the third attribute type, the attribute permission indicates the type of data operation, the feature handle refers to the object to transmit the message, and the feature UUID indicates the identification code of the feature.

Optionally, the device also includes:

The Bluetooth link establishment module is configured to establish a Bluetooth link with the client when receiving a link establishment request sent by the client.

Optionally, the device also includes:

A search stop module, configured to stop the search process after the target application parameters are searched.

On the basis of a service discovery method provided by an embodiment of the present disclosure, the present disclosure also provides a service discovery device suitable for a client, see FIG. 7 , the device includes:

A target parameter acquisition module 71, configured to acquire target application parameters preset in the client;

A target request generation module 72, configured to generate a target request containing the target application parameters and send it to the server, so that the server responds to the target request to search for an application parameter registration list and returns whether the target application is found The target response data for the lookup result of the parameter;

The data interaction module 73 is configured to exchange data with the server according to the target application parameters after the target response data indicates that the target application parameters are found.

Optionally, the target application parameters include service, inclusion and feature.

Optionally, when the target application parameter includes a service, the target request includes a service request; the service request includes an operation code, an attribute type, and a service parameter UUID; the operation code is a first operation code, and the attribute Type is the first attribute type.

Optionally, when the target application parameter includes inclusion, the target request includes an inclusion request; the inclusion request includes an operation code, an attribute type, and an attribute permission; the operation code is a first operation code, and the attribute type is the second attribute type.

Optionally, when the target application parameter includes a feature, the target request includes a feature request; the feature request includes an opcode, an attribute type, and a feature UUID; the opcode is a first opcode, and the attribute type is the third attribute type.

Optionally, the device also includes:

A link request sending module, configured to send a link establishment request, so that the server can establish a bluetooth link with the client in response to the link establishment request.

It should be noted that the device embodiment shown in this embodiment matches the content of the above-mentioned method embodiment, and reference may be made to the content of the above-mentioned method embodiment, which will not be repeated here.

On the basis of the service discovery method provided by the embodiment of the present disclosure, the embodiment of the present disclosure also provides a service discovery system, the system includes a vehicle device and an electronic device; the vehicle device responds to detecting the vehicle device The trigger operation displays the screen projection identification code used for this screen projection; the vehicle device plays the audio file carrying the screen projection identification code at least once; the electronic device starts the screen projection application and starts the audio collection function of the electronic device , and based on the audio collection function, acquire a sound wave signal carrying a screen projection identification code, obtain a sound wave file, and establish a screen projection link with the vehicle device according to the screen projection identification code in the sound wave signal; the vehicle device Sharing the currently displayed content of the electronic device according to the screen-casting link.

It should be noted that the system embodiment shown in this embodiment matches the content of the above method embodiment, and reference may be made to the content of the above method embodiment, which will not be repeated here.

Fig. 8 is a block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 800 may be a smart phone, a computer, a digital broadcast terminal, a tablet device, a medical device, a fitness device, a personal digital assistant, etc., as well as the above-mentioned vehicle devices.

8, electronic device 800 may include one or more of the following components: processing component 802, memory 804, power supply component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814 , a communication component 816, and an image acquisition component 818.

The processing component 802 generally controls the overall operations of the electronic device 800, such as those associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 for executing computer programs. Additionally, processing component 802 may include one or more modules that facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802 .

The memory 804 is configured to store various types of data to support operations at the electronic device 800 . Examples of such data include computer programs for any application or method operating on the electronic device 800, contact data, phonebook data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

The power supply component 806 provides power to various components of the electronic device 800 . Power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for electronic device 800 . The power supply component 806 may include a power chip, and the controller may communicate with the power chip, so as to control the power chip to turn on or turn off the switching device, so that the battery supplies power to the motherboard circuit or not.

The multimedia component 808 includes a screen providing an output interface between the electronic device 800 and the target object. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input information from a target object. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or a swipe action, but also detect duration and pressure associated with the touch or swipe operation.

Audio component 810 is configured to output and/or input audio file information. For example, the audio component 810 includes a microphone (MIC), which is configured to receive external audio file information when the electronic device 800 is in an operation mode, such as a calling mode, a recording mode and a voice recognition mode. The received audio file information may be further stored in memory 804 or sent via communication component 816 . In some embodiments, the audio component 810 also includes a speaker for outputting audio file information.

The I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module. The peripheral interface module may be a keyboard, a click wheel, or a button.

Sensor assembly 814 includes one or more sensors for providing status assessments of various aspects of electronic device 800 . For example, the sensor component 814 can detect the open/closed state of the electronic device 800, the relative positioning of components, such as the display screen and the keypad of the electronic device 800, and the sensor component 814 can also detect the position change of the electronic device 800 or a component , the presence or absence of the target object in contact with the electronic device 800 , the orientation or acceleration/deceleration of the electronic device 800 and the temperature change of the electronic device 800 . In this example, the sensor component 814 may include a magnetic sensor, a gyroscope, and a magnetic field sensor, wherein the magnetic field sensor includes at least one of the following: a Hall sensor, a thin film magnetoresistive sensor, and a magnetic liquid acceleration sensor.

The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 can access a wireless network based on communication standards, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives broadcast information or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, the electronic device 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Data Processors (DSPs), Digital Data Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Programmable gate array (FPGA), controller, microcontroller, microprocessor or other electronic implementation.

In an exemplary embodiment, there is also provided an electronic device, comprising:

memory and processor;

The memory is used to store a computer program executable by the processor;

The processor is configured to execute the computer program in the memory, so as to realize the above-mentioned method.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium, such as the memory 804 including instructions, and the above-mentioned executable computer program can be executed by a processor. Wherein, the readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device and the like.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. The present disclosure is intended to cover any modification, use or adaptation that follows the general principles of the present disclosure and includes common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are to be considered exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (17)

1. A method for service discovery, characterized in that it is suitable for a server, the method comprising: Obtaining a target request, the target request containing preset target application parameters in the client; Searching for the target application parameter in the application parameter registration list, and obtaining a search result indicating whether the target application parameter is found; generating target response data that includes the search result and matches the target request; The target response data is fed back to the client, so that the client exchanges data with the server after the target response data represents the discovery of target application parameters. 2. The method according to claim 1, wherein the target application parameters include services, inclusions and features. 3. The method according to claim 2, wherein when the target application parameter includes a service, the target response data includes a service response; the service response includes an operation code, attribute type, result data, and attribute authority ; The operation code is the second operation code, the attribute type is the first attribute type, and the result data indicates whether the service is in the registration list. 4. The method according to claim 2, wherein when the target application parameter includes inclusion, the target response data includes an inclusion response; the inclusion response includes an operation code, an attribute type, and result data; The opcode is a second opcode, the attribute type is a second attribute type, and the result data indicates whether the inclusion is in the registration list. 5. The method according to claim 2, wherein when the target application parameters include features, the target response data includes feature responses; the feature responses include opcodes, attribute types, attribute permissions, feature UUIDs and a feature handle; the opcode is the second opcode, the attribute type is the third attribute type, the attribute permission indicates the type of data operation, the feature handle refers to the object to transmit the message, and the feature UUID indicates the identification code of the feature . 6. The method according to claim 1, further comprising: When receiving the link establishment request sent by the client, establish a bluetooth link with the client. 7. The method according to any one of claims 1 to 6, characterized in that the method further comprises: The search process is stopped after the target application parameters are searched. 8. A service discovery method, characterized in that, being applicable to a client, the method comprises: Obtain the preset target application parameters in the client; Generate a target request containing the target application parameter and send it to the server, so that the server searches the application parameter registration list in response to the target request and returns target response data indicating whether the target application parameter is found ; When the target response data indicates that target application parameters are found, data is exchanged with the server according to the target application parameters. 9. The method according to claim 8, wherein the target application parameters include service, containment and feature. 10. The method according to claim 9, wherein when the target application parameter includes a service, the target request includes a service request; the service request includes an operation code, an attribute type, and a service parameter UUID; the The operation code is the first operation code, and the attribute type is the first attribute type. 11. The method according to claim 9, wherein when the target application parameter includes include, the target request includes include request; the include request includes opcode, attribute type and attribute permission; the operation The code is a first opcode, and the attribute type is a second attribute type. 12. The method according to claim 9, wherein when the target application parameter includes a feature, the target request includes a feature request; the feature request includes an operation code, an attribute type, and a feature UUID; the operation The code is a first operation code, and the attribute type is a third attribute type. 13. The method of claim 8, further comprising: Sending a link establishment request, so that the server establishes a bluetooth link with the client in response to the link establishment request. 14. A service discovery device, characterized in that it is suitable for a server, and the device comprises: A target request obtaining module, configured to obtain a target request, the target request containing preset target application parameters in the client; A search result acquisition module, configured to search for the target application parameter in the application parameter registration list, and obtain a search result indicating whether the target application parameter is found; A target response acquisition module, configured to generate target response data that includes the search result and matches the target request; A target response feedback module, configured to feed back the target response data to the client, so that the client can exchange data with the server after the target response data represents the discovery of target application parameters. 15. A service discovery device, characterized in that it is suitable for a client, and the device comprises: A target parameter acquisition module, configured to acquire target application parameters preset in the client; A target request generating module, configured to generate a target request containing the target application parameters and send it to the server, so that the server can search the application parameter registration list in response to the target request and return whether the target application parameters are found The target response data of the search results; A data interaction module, configured to exchange data with the server according to the target application parameters after the target response data indicates that the target application parameters are found. 16. An electronic device, characterized in that it comprises: memory and processor; The memory is used to store a computer program executable by the processor; The processor is configured to execute the computer program in the memory, so as to realize the method according to any one of claims 1-13. 17. A non-transitory computer-readable storage medium, characterized in that, when the executable computer program in the storage medium is executed by a processor, the method according to any one of claims 1 to 13 can be implemented .

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