How to configure IPV4 address and Subnet Mask - xamarin

Question

In Xamarin iOS we can connect to a Wi-Fi network using SSID and password as below
var config = new NEHotspotConfiguration(SSID, Password, false) {
JoinOnce = false };
var configManager = new NEHotspotConfigurationManager();
await configManager.ApplyConfigurationAsync(config);
provided HotSpotConfiguration is added in the app entitlement.
My question is
Is it possible to change Configure IP option from Automatic to Manual?
If yes, how to configure IP address and subnet mask?

Answer 1

1. In Xarmain.ios NEHotspotConfigurationManager is from Apple's native method.
NEHotspotConfigurationManager refer to this from apple , this from xamarin
A configuration manager that applies and removes hotspot configurations of Wi-Fi networks.
So it can not configure IPV4 address and Subnet Mask
2. However, NEIPv4Settings
NEIPv4Settings contains the Internet Protocol version 4 (IPv4) settings of a IP layer network tunnel. can do that.you can refer to here from apple , here from xamarin
They are all extend from NetworkExtension (Configure VPN tunnels. Customize and extend core networking features.)
So you can use NEIPv4Settings to do that.
If you want connect to a wireless access point that is not connected to the internet.The Wifi connection is established fine and I can access other devices on that LAN.In ios,you can do that.
3. Workaround
The Wifi connection on the iPhone/iPad must be configured as a static connection. You must specify an unused IP in the range of the wifi access point (e.g. 192.168.0.2). Specify a mask (255.255.255.0). Do NOT enter any router IP.
Once connected to that wifi network, you can access other devices connected to the same wifi LAN (e.g. 192.168.0.*).
And do that, WAN is accessible through 3G!
More info: If want to do VPN, you can study NEVPNManager ,also extend from NetworkExtension.