Network Management Overview

Network management functions include:

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 sharing: Shares a device's Internet connection with other connected devices by means of Wi-Fi hotspot, Bluetooth, and USB sharing, and queries the network sharing state and shared mobile data volume.
Ethernet connection: Provides wired network capabilities, which allow you to set the IP address, subnet mask, gateway, and Domain Name System (DNS) server of a wired network.
Network connection management: Provides basic network management capabilities, including management of Wi-Fi/cellular/Ethernet connection priorities, network quality evaluation, subscription to network connection status 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.

Constraints

To use the functions of the network management module, you must obtain the permissions listed in the following table.

Permission	Description
ohos.permission.GET_NETWORK_INFO	Allows an application to obtain the network connection information.
ohos.permission.SET_NETWORK_INFO	Allows an application to modify the network connection state.
ohos.permission.INTERNET	Allows an application to open network sockets to connect to the network.