Unity how to find a server from client using NetworkDiscovery

Question

[I work in c#]

In order to decide weather a device should become a server with local client or client alone (for main-server-less networking) I need to find out if t

Answer 1

First of all you named each server and client script the-same name. You don't need OnRecievedBroadcast in the server code. You only need it in the client code. OnRecievedBroadcast is not being called on the client side because you did not override NetworkDiscovery. You must override it.

Here is a simple Discovering Code:

Client:

public class NetClient : NetworkDiscovery
{

    void Start()
    {
        startClient();
    }

    public void startClient()
    {
        Initialize();
        StartAsClient();
    }

    public override void OnReceivedBroadcast(string fromAddress, string data)
    {
         Debug.Log("Server Found");
    }
}

Server:

public class NetServer : NetworkDiscovery
{
    // Use this for initialization
    void Start()
    {
        Application.runInBackground = true;
        startServer();
    }

    //Call to create a server
    public void startServer()
    {
        int serverPort = createServer();
        if (serverPort != -1)
        {
            Debug.Log("Server created on port : " + serverPort);
            broadcastData = serverPort.ToString();
            Initialize();
            StartAsServer();
        }
        else
        {
            Debug.Log("Failed to create Server");
        }
    }

int minPort = 10000;
int maxPort = 10010;
int defaultPort = 10000;

//Creates a server then returns the port the server is created with. Returns -1 if server is not created
private int createServer()
{
    int serverPort = -1;
    //Connect to default port
    bool serverCreated = NetworkServer.Listen(defaultPort);
    if (serverCreated)
    {
        serverPort = defaultPort;
        Debug.Log("Server Created with deafault port");
    }
    else
    {
        Debug.Log("Failed to create with the default port");
        //Try to create server with other port from min to max except the default port which we trid already
        for (int tempPort = minPort; tempPort <= maxPort; tempPort++)
        {
            //Skip the default port since we have already tried it
            if (tempPort != defaultPort)
            {
                //Exit loop if successfully create a server
                if (NetworkServer.Listen(tempPort))
                {
                    serverPort = tempPort;
                    break;
                }

                //If this is the max port and server is not still created, show, failed to create server error
                if (tempPort == maxPort)
                {
                    Debug.LogError("Failed to create server");
                }
            }
        }
    }
    return serverPort;
}
}

The createServer() function is a function from your last question. I don't think you can have both server and client code running at the-same time in the Editor.

For testing, you must build the code in your pc with the server code/NetServer enabled. Run the built program then from your Editor you can run the client/NetClient code. This should discover game on the server.