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About This Kit
Content overview
Network Kit provides the following functions:
HTTP data request: initiates a data request through HTTP.
WebSocket connection: establishes a bidirectional connection between the server and client through WebSocket.
Socket connection: transmits data through Socket.
Network connection management: provides basic network management capabilities, including priority management of multiple network connections such as Wi-Fi, cellular, and Ethernet, network quality evaluation, subscription to default/specified network connection state changes, query of network connection information, and DNS resolution.
mDNS management: provides Multicast DNS (mDNS) management capabilities, such as adding, removing, discovering, and resolving local services on a LAN.
Emulator Support
Network Kit supports the Emulator, but there are differences between the Emulator and real devices. The differences are as follows:
- General differences: For details, please refer to Differences Between the Emulator and the Real Device.
- The Emulator does not support the VPN feature.
Constraints
To use the functions of the network management module, you must obtain the permissions listed in the following table.
Before requesting permissions, ensure that the basic principles for using permissions are met. Declare the permissions required by your application. For details, see Declaring Permissions in the Configuration File.
| Permission | Description |
|---|---|
| ohos.permission.GET_NETWORK_INFO | Allows an application to obtain the network connection information. |
| ohos.permission.INTERNET | Allows an application to open network sockets to connect to the network. |
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