WifiNetworkHelper.Disconnect() not work?

[907684501]

Hello everyone, I have a question.

1: WifiNetworkHelper.ConnectDhcp() OK.
2: WifiNetworkHelper.Disconnect(); OK, no return error.
3: WifiNetworkHelper.ConnectDhcp() error

++++ Exception System.InvalidOperationException - 0x00000000 (11) ++++
++++ Message:
++++ nanoFramework.Networking.NetworkHelper::SetupHelper [IP: 0008] ++++
++++ nanoFramework.Networking.NetworkHelper::InternalWaitNetworkAvailable [IP: 0004] ++++
++++ nanoFramework.Networking.WifiNetworkHelper::ScanAndConnect [IP: 015b] ++++
++++ nanoFramework.Networking.WifiNetworkHelper::ConnectDhcp [IP: 000d] ++++
++++ DoraNet.CESP32S3Relay1CH::b__72_0 [IP: 0032] ++++

WifiNetworkHelper.Status == 2

Thank you!

[josesimoes]

What is your question?

[907684501]

What I mean is that the first call to WifiNetworkHelper.ConnectDhcp() works fine, and then calling WifiNetworkHelper.Disconnect() is also normal. But when I call WifiNetworkHelper.ConnectDhcp() again, an exception occurs. Does Disconnect() disconnect the network?

[josesimoes]

WifiNetworkHelper is meant to be a helper in setting up the network connection. That's why you see there the call to ConnectDhcp().
And it was coded to be used at boot time only. Because of the convoluted interactions between the various network components and IDF APIs.
If you need to change something in the DHCP or IP of the target, you should use the APIs available in Sys.Net.

[907684501]

OK , Thank you very much!

[Ellerbach]

Note: the sample Wifi shows how to manually connect and disconnect to a network: https://github.com/nanoframework/Samples/blob/main/samples/Wifi/ScanWiFi/Program.cs

[907684501]

Thank you! I will try it.