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Add UDP service discovery

This commit is contained in:
Santiago Lo Coco 2024-10-30 22:12:33 +01:00
parent 8ce99db7f6
commit 5dbf0cc55b
4 changed files with 145 additions and 38 deletions
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84
Assets/Scenes/WebView.unity
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11
Assets/Scripts/EndpointLoader.cs
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@ -11,7 +11,7 @@ public class EndpointLoader : MonoBehaviour
public WebView webView1;
public WebView webView2;
private const string apiUrl = "http://windows.local:5000/api/endpoints";
private string apiUrl = "http://windows.local:5000/api/endpoints";
private const string defaultEndpoint1 = "http://windows.local:8100/mystream/";
private const string defaultEndpoint2 = "http://windows.local:8200/mystream/";
@ -64,6 +64,15 @@ public class EndpointLoader : MonoBehaviour
webView2.Load(defaultEndpoint2);
}
public void UpdateApiUrl(string newApiUrl)
{
if (!string.IsNullOrEmpty(newApiUrl))
{
Debug.Log($"Updating API URL to {newApiUrl}");
apiUrl = newApiUrl;
}
}
[Serializable]
public class Endpoint
{

77
Assets/Scripts/ServiceDiscovery.cs Normal file
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@ -0,0 +1,77 @@
using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using UnityEngine;
public class ServiceDiscovery : MonoBehaviour
{
public EndpointLoader endpointLoader;
private UdpClient udpClient;
private const int multicastPort = 5353;
private const string multicastAddress = "224.0.0.251";
private void Start()
{
// StartListening();
}
private void StartListening()
{
try
{
udpClient = new UdpClient();
udpClient.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
udpClient.Client.Bind(new IPEndPoint(IPAddress.Any, multicastPort));
udpClient.JoinMulticastGroup(IPAddress.Parse(multicastAddress));
Debug.Log("Listening for service announcements...");
udpClient.BeginReceive(OnReceive, null);
}
catch (Exception ex)
{
Debug.LogError($"Error starting UDP listener: {ex.Message}");
}
}
private void OnReceive(IAsyncResult result)
{
try
{
IPEndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any, multicastPort);
byte[] receivedBytes = udpClient.EndReceive(result, ref remoteEndPoint);
string receivedMessage = Encoding.UTF8.GetString(receivedBytes);
Debug.Log($"Received message: {receivedMessage} from {remoteEndPoint}");
string[] parts = receivedMessage.Split(':');
if (parts.Length == 3 && IPAddress.TryParse(parts[1], out IPAddress ip))
{
int port = int.Parse(parts[2]);
ConnectToService(ip.ToString(), port);
}
// udpClient.BeginReceive(OnReceive, null);
}
catch (Exception ex)
{
Debug.LogError($"Error receiving UDP message: {ex.Message}");
}
}
private void ConnectToService(string ipAddress, int port)
{
Debug.Log($"Connecting to service at {ipAddress}:{port}");
endpointLoader.UpdateApiUrl($"http://{ipAddress}:{port}/api/endpoints");
}
private void OnApplicationQuit()
{
udpClient?.DropMulticastGroup(IPAddress.Parse(multicastAddress));
udpClient?.Close();
}
}

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Assets/Scripts/ServiceDiscovery.cs.meta Normal file
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