Trying to use C# to connect to my light bulb

YEELIGHT LED Bulb (White)
#1

Hi guys

Today I tried to write e very simple c# script just to see if I could contact my yeelight bulb, but I cannot recieve answer, maybe I didn’t quite get how c# multicasting should be done, can you help ?

Thanks

  IPAddress multicastaddress = IPAddress.Parse("239.255.255.250");
        UdpClient udpclient = new UdpClient();
        udpclient.JoinMulticastGroup(multicastaddress);
        IPEndPoint remoteep = new IPEndPoint(multicastaddress, 1982);
        string ssdpMessage = "M-SEARCH * HTTP/1.1\r\nHOST: 239.255.255.250:1982\r\nMAN: \"ssdp:discover\"\r\nST: wifi_bulb";

        Console.WriteLine(ssdpMessage);
        
        byte[] buffer = Encoding.ASCII.GetBytes(ssdpMessage);
        udpclient.Send(buffer, buffer.Length, remoteep);

        IPEndPoint AnyEndPoint = new IPEndPoint(IPAddress.Any, 0);

        while (true)
        {
            Byte[] data = udpclient.Receive(ref AnyEndPoint);
            string strData = Encoding.ASCII.GetString(data);
            Console.WriteLine(strData);
        }
#2

Let us try your code and provide some update.

#3

Could you put you full project code here? let me try it

#4

Thank you very much, you can just copy paste this code on a new c# console project in the main it should work.

#5

Thank Ricky , you can just copy paste this code on a new c# console project in the main it should run , regardless I will upload mine tonight :).

#6

Hi Hitomi, I use your code and it works well.
Did you open developer mode in App setting? This is what needs to be done before using the Yeelight open API.

#7

Hi Ricky , I indeed activated developer mode, thanks for testing my code and confirming it works !

On my side I don’t seem to receive any answer.

#8

It could be caused by your router. If you are using OpenWrt, you need to turn on one option. http://forum.yeelight.com/t/python/69/8