switch to new discovery method

MainForm.Designer.cs

@@ -35,13 +35,12 @@
             toolStripStatusDisco = new ToolStripStatusLabel();
             menuStrip1 = new MenuStrip();
             discoveryToolStripMenuItem = new ToolStripMenuItem();
-            startToolStripMenuItem = new ToolStripMenuItem();
+            manualAddToolStripMenuItem = new ToolStripMenuItem();
-            stopToolStripMenuItem = new ToolStripMenuItem();
-            forceRediscoverToolStripMenuItem = new ToolStripMenuItem();
             toolStripSeparator1 = new ToolStripSeparator();
             saveToolStripMenuItem = new ToolStripMenuItem();
             loadToolStripMenuItem = new ToolStripMenuItem();
-            manualAddToolStripMenuItem = new ToolStripMenuItem();
+            toolStripSeparator2 = new ToolStripSeparator();
+            discoverToolStripMenuItem = new ToolStripMenuItem();
             statusStripMain.SuspendLayout();
             menuStrip1.SuspendLayout();
             SuspendLayout();
@@ -75,7 +74,7 @@
             // 
             toolStripStatusDisco.Name = "toolStripStatusDisco";
             toolStripStatusDisco.Size = new Size(111, 17);
-            toolStripStatusDisco.Text = "Discovery : Stopped";
+            toolStripStatusDisco.Text = "";
             // 
             // menuStrip1
             // 
@@ -88,32 +87,17 @@
             // 
             // discoveryToolStripMenuItem
             // 
-            discoveryToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { startToolStripMenuItem, stopToolStripMenuItem, manualAddToolStripMenuItem, forceRediscoverToolStripMenuItem, toolStripSeparator1, saveToolStripMenuItem, loadToolStripMenuItem });
+            discoveryToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { discoverToolStripMenuItem, toolStripSeparator2, manualAddToolStripMenuItem, toolStripSeparator1, saveToolStripMenuItem, loadToolStripMenuItem });
             discoveryToolStripMenuItem.Name = "discoveryToolStripMenuItem";
             discoveryToolStripMenuItem.Size = new Size(70, 20);
             discoveryToolStripMenuItem.Text = "Discovery";
             // 
-            // startToolStripMenuItem
+            // manualAddToolStripMenuItem
             // 
-            startToolStripMenuItem.Name = "startToolStripMenuItem";
+            manualAddToolStripMenuItem.Name = "manualAddToolStripMenuItem";
-            startToolStripMenuItem.Size = new Size(180, 22);
+            manualAddToolStripMenuItem.Size = new Size(180, 22);
-            startToolStripMenuItem.Text = "Start";
+            manualAddToolStripMenuItem.Text = "Add manually";
-            startToolStripMenuItem.Click += startToolStripMenuItem_Click;
+            manualAddToolStripMenuItem.Click += manualAddToolStripMenuItem_Click;
-            // 
-            // stopToolStripMenuItem
-            // 
-            stopToolStripMenuItem.Enabled = false;
-            stopToolStripMenuItem.Name = "stopToolStripMenuItem";
-            stopToolStripMenuItem.Size = new Size(180, 22);
-            stopToolStripMenuItem.Text = "Stop";
-            stopToolStripMenuItem.Click += stopToolStripMenuItem_Click;
-            // 
-            // forceRediscoverToolStripMenuItem
-            // 
-            forceRediscoverToolStripMenuItem.Name = "forceRediscoverToolStripMenuItem";
-            forceRediscoverToolStripMenuItem.Size = new Size(180, 22);
-            forceRediscoverToolStripMenuItem.Text = "Force re-discover";
-            forceRediscoverToolStripMenuItem.Click += forceReloadToolStripMenuItem_Click;
             // 
             // toolStripSeparator1
             // 
@@ -134,12 +118,16 @@
             loadToolStripMenuItem.Text = "Load";
             loadToolStripMenuItem.Click += loadToolStripMenuItem_Click;
             // 
-            // manualAddToolStripMenuItem
+            // toolStripSeparator2
             // 
-            manualAddToolStripMenuItem.Name = "manualAddToolStripMenuItem";
+            toolStripSeparator2.Name = "toolStripSeparator2";
-            manualAddToolStripMenuItem.Size = new Size(180, 22);
+            toolStripSeparator2.Size = new Size(177, 6);
-            manualAddToolStripMenuItem.Text = "Add manually";
+            // 
-            manualAddToolStripMenuItem.Click += manualAddToolStripMenuItem_Click;
+            // discoverToolStripMenuItem
+            // 
+            discoverToolStripMenuItem.Name = "discoverToolStripMenuItem";
+            discoverToolStripMenuItem.Size = new Size(180, 22);
+            discoverToolStripMenuItem.Text = "Discover cameras";
             // 
             // MainForm
             // 
@@ -153,7 +141,6 @@
             MainMenuStrip = menuStrip1;
             Name = "MainForm";
             Text = "RoboSpot MotionCamera finder";
-            FormClosing += MainForm_FormClosing;
             statusStripMain.ResumeLayout(false);
             statusStripMain.PerformLayout();
             menuStrip1.ResumeLayout(false);
@@ -169,13 +156,12 @@
         private ToolStripStatusLabel toolStripStatusLabel;
         private MenuStrip menuStrip1;
         private ToolStripMenuItem discoveryToolStripMenuItem;
-        private ToolStripMenuItem startToolStripMenuItem;
-        private ToolStripMenuItem stopToolStripMenuItem;
-        private ToolStripMenuItem forceRediscoverToolStripMenuItem;
         private ToolStripMenuItem saveToolStripMenuItem;
         private ToolStripMenuItem loadToolStripMenuItem;
         private ToolStripSeparator toolStripSeparator1;
         private ToolStripStatusLabel toolStripStatusDisco;
         private ToolStripMenuItem manualAddToolStripMenuItem;
+        private ToolStripMenuItem discoverToolStripMenuItem;
+        private ToolStripSeparator toolStripSeparator2;
     }
 }

MainForm.cs

@@ -1,27 +1,34 @@
 using System.ComponentModel;
 using System.Diagnostics;
 using System.Net;
+using System.Net.Sockets;
 using System.Net.NetworkInformation;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using System.Windows.Forms;
-using Tmds.MDns;
 using static robospot_camera_finder.MainForm;
+using System.Runtime.InteropServices;
+using System.Text;
 
 namespace robospot_camera_finder
 {
     public partial class MainForm : Form
     {
-        private readonly ServiceBrowser browser = new();
-
         private BindingList<Camera> all_cameras = new();
 
         public static string cam_username = "admin";
         public static string cam_password = "RoboSpot10";
 
-        private static string browse_scope = "_rtsp._tcp";
+        // UDP discovery constants
+        private const int SEND_PORT = 7701;
+        private const int RECEIVE_PORT = 7711;
+        private const string BROADCAST_ADDRESS = "10.255.255.255";
+        private const byte DEF_REQ_SCAN = 1;
+        private const byte RES_REQ_SCAN = 11;
 
-        bool is_browsing = false;
+        private UdpClient sendClient;
+        private UdpClient receiveClient;
+        private bool isDiscovering = false;
 
         public class Camera
         {
@@ -33,8 +40,6 @@ namespace robospot_camera_finder
                 camera_serial = serial;
             }
 
-            public Camera() { }
-
             public string camera_name { get; set; }
 
             public string camera_ip { get; set; }
@@ -44,6 +49,51 @@ namespace robospot_camera_finder
             public string camera_serial { get; set; }
         }
 
+        [StructLayout(LayoutKind.Sequential, Pack = 1)]
+        public struct DataPacketIPv4
+        {
+            public byte mode;
+
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 18)]
+            public byte[] packet_id;
+
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 18)]
+            public byte[] mac_addr;
+
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
+            public byte[] ip_addr;
+
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
+            public byte[] subnetmask;
+
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
+            public byte[] gateway;
+
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
+            public byte[] password;
+
+            public byte reserved1;
+            public ushort port;
+            public byte status;
+
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
+            public byte[] device_name;
+
+            public byte reserved2;
+            public ushort http_port;
+            public ushort device_port;
+            public ushort tcp_port;
+            public ushort udp_port;
+            public ushort upload_port;
+            public ushort multicast_port;
+            public byte network_mode;
+
+            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)]
+            public byte[] ddns_url;
+
+            public byte reserved3;
+        }
+
         public MainForm()
         {
             InitializeComponent();
@@ -66,6 +116,7 @@ namespace robospot_camera_finder
             if (!got_proper_ip)
             {
                 DialogResult open_netsettings = MessageBox.Show("No Ethernet interface on the 10.0.0.0/8 subnet found. Cameras might not be detected. Do you want to open network settings ?", "Wrong IP configuration", MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1);
+
                 if (open_netsettings == DialogResult.Yes)
                 {
                     ProcessStartInfo startInfo = new ProcessStartInfo("NCPA.cpl");
@@ -73,87 +124,32 @@ namespace robospot_camera_finder
 
                     Process.Start(startInfo);
                 }
+
             }
 
             lbMain.DataSource = all_cameras;
             lbMain.DisplayMember = "camera_name";
             lbMain.ValueMember = "camera_ip";
 
-            browser.ServiceAdded += (sender, args) =>
+            // Initialize UDP clients
-            {
+            InitializeUdpClients();
-                ServiceAdded(sender, args);
-            };
 
-            browser.ServiceChanged += (sender, args) =>
+            // Discover cameras
-            {
+            discover_cameras();
-                ServiceAdded(sender, args);
-            };
-
-            browser.ServiceRemoved += (sender, args) =>
-            {
-                if (browser.IsBrowsing)
-                {
-                    ServiceRemoved(sender, args);
-                }
-            };
-
-            browse(true);
         }
 
-        private void browse(bool browse_needed)
+        private void InitializeUdpClients()
         {
-            if (browse_needed)
+            try
             {
-                if (!browser.IsBrowsing)
+                sendClient = new UdpClient();
-                {
+                sendClient.EnableBroadcast = true;
-                    browser.StartBrowse(browse_scope);
+
-                    is_browsing = true;
+                receiveClient = new UdpClient(RECEIVE_PORT);
-                    toolStripStatusDisco.Text = "Discovery : Started";
-                }
             }
-            else
+            catch (Exception ex)
             {
-                if (browser.IsBrowsing)
+                MessageBox.Show($"Failed to initialize UDP clients: {ex.Message}", "Network Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
-                {
-                    browser.StopBrowse();
-                    is_browsing = false;
-                    toolStripStatusDisco.Text = "Discovery : Stopped";
-                }
-            }
-
-            startToolStripMenuItem.Enabled = !browser.IsBrowsing;
-            stopToolStripMenuItem.Enabled = browser.IsBrowsing;
-        }
-
-        private void ServiceAdded(object sender, ServiceAnnouncementEventArgs args)
-        {
-            foreach (var cam_addr in args.Announcement.Addresses)
-            {
-                if (cam_addr.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
-                {
-                    HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://" + cam_addr + "/stw-cgi/system.cgi?msubmenu=deviceinfo&action=view");
-                    request.Credentials = new NetworkCredential(MainForm.cam_username, MainForm.cam_password);
-                    HttpWebResponse response = (HttpWebResponse)request.GetResponse();
-                    string text;
-                    using (var sr = new StreamReader(response.GetResponseStream())) { text = sr.ReadToEnd(); }
-                    string[] resp_lines = text.Split('\n');
-                    string location_line = Array.Find(resp_lines, line => line.Trim().StartsWith("DeviceLocation="));
-                    string serial_line = Array.Find(resp_lines, line => line.Trim().StartsWith("SerialNumber="));
-                    string location = "";
-                    string serial = "";
-                    if (location_line != null)
-                    {
-                        location = location_line.Substring("DeviceLocation=".Length).Trim();
-                    }
-                    if (serial_line != null)
-                    {
-                        serial = serial_line.Substring("SerialNumber=".Length).Trim();
-                    }
-
-                    Camera new_camera = new Camera("Camera " + cam_addr + " - " + location + " - " + serial, cam_addr.ToString(), location, serial);
-
-                    add_camera(new_camera);
-                }
             }
         }
 
@@ -179,29 +175,6 @@ namespace robospot_camera_finder
             }
         }
 
-        private void ServiceRemoved(object sender, ServiceAnnouncementEventArgs args)
-        {
-            foreach (var cam_ip in args.Announcement.Addresses)
-            {
-                if (cam_ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
-                {
-                    foreach (var camera in all_cameras)
-                    {
-                        if (cam_ip.ToString() == camera.camera_ip)
-                        {
-                            all_cameras.Remove(camera);
-                            return;
-                        }
-                    }
-                }
-            }
-        }
-
-        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
-        {
-            browser.StopBrowse();
-        }
-
         private void lbMain_MouseDoubleClick(object sender, MouseEventArgs e)
         {
             if (lbMain.SelectedItem != null)
@@ -214,27 +187,6 @@ namespace robospot_camera_finder
             }
         }
 
-        private void startToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            browse(true);
-        }
-
-        private void stopToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            browse(false);
-        }
-
-        private void forceReloadToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            DialogResult result = MessageBox.Show("Are you sure you want to clear discovered cameras and restart the discovery process ?", "Warning", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
-            if (result == DialogResult.Yes)
-            {
-                browse(false);
-                all_cameras.Clear();
-                browse(true);
-            }
-        }
-
         private void loadToolStripMenuItem_Click(object sender, EventArgs e)
         {
             string json = "";
@@ -283,5 +235,274 @@ namespace robospot_camera_finder
                 add_camera(camera_to_add);
             }
         }
+
+        // Helper method to convert structure to byte array
+        private byte[] StructureToByteArray(DataPacketIPv4 packet)
+        {
+            int size = Marshal.SizeOf(packet);
+            byte[] array = new byte[size];
+            IntPtr ptr = Marshal.AllocHGlobal(size);
+
+            try
+            {
+                Marshal.StructureToPtr(packet, ptr, true);
+                Marshal.Copy(ptr, array, 0, size);
+            }
+            finally
+            {
+                Marshal.FreeHGlobal(ptr);
+            }
+
+            return array;
+        }
+
+        // Helper method to convert byte array to structure
+        private DataPacketIPv4 ByteArrayToStructure(byte[] data)
+        {
+            DataPacketIPv4 packet = new DataPacketIPv4();
+            int size = Marshal.SizeOf(packet);
+            IntPtr ptr = Marshal.AllocHGlobal(size);
+
+            try
+            {
+                Marshal.Copy(data, 0, ptr, size);
+                packet = (DataPacketIPv4)Marshal.PtrToStructure(ptr, typeof(DataPacketIPv4));
+            }
+            finally
+            {
+                Marshal.FreeHGlobal(ptr);
+            }
+
+            return packet;
+        }
+
+        // Helper method to create a string array field with null termination
+        private byte[] CreateStringField(string value, int fieldSize)
+        {
+            byte[] field = new byte[fieldSize];
+            if (!string.IsNullOrEmpty(value))
+            {
+                byte[] valueBytes = Encoding.ASCII.GetBytes(value);
+                int copyLength = Math.Min(valueBytes.Length, fieldSize - 1); // Leave space for null terminator
+                Array.Copy(valueBytes, field, copyLength);
+            }
+            return field;
+        }
+
+        // Helper method to extract string from byte array
+        private string ExtractString(byte[] data)
+        {
+            if (data == null) return "";
+
+            // Find the null terminator
+            int nullIndex = Array.IndexOf(data, (byte)0);
+            if (nullIndex >= 0)
+            {
+                return Encoding.ASCII.GetString(data, 0, nullIndex);
+            }
+            else
+            {
+                return Encoding.ASCII.GetString(data).TrimEnd('\0');
+            }
+        }
+
+        // Create discovery packet
+        private DataPacketIPv4 CreateDiscoveryPacket()
+        {
+            DataPacketIPv4 packet = new DataPacketIPv4
+            {
+                mode = DEF_REQ_SCAN,
+                packet_id = CreateStringField("CAM_FINDER_" + DateTime.Now.Ticks.ToString(), 18),
+                mac_addr = new byte[18],
+                ip_addr = new byte[16],
+                subnetmask = new byte[16],
+                gateway = new byte[16],
+                password = new byte[20],
+                reserved1 = 0,
+                port = 0,
+                status = 0,
+                device_name = new byte[10],
+                reserved2 = 0,
+                http_port = 0,
+                device_port = 0,
+                tcp_port = 0,
+                udp_port = 0,
+                upload_port = 0,
+                multicast_port = 0,
+                network_mode = 1,
+                ddns_url = new byte[128],
+                reserved3 = 0
+            };
+
+            return packet;
+        }
+
+        // Send discovery packet
+        private async Task<bool> SendDiscoveryPacketAsync(DataPacketIPv4 packet)
+        {
+            try
+            {
+                byte[] data = StructureToByteArray(packet);
+                IPEndPoint broadcastEndPoint = new IPEndPoint(IPAddress.Parse(BROADCAST_ADDRESS), SEND_PORT);
+
+                int bytesSent = await sendClient.SendAsync(data, data.Length, broadcastEndPoint);
+                return bytesSent > 0;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show($"Error sending discovery packet: {ex.Message}", "Network Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return false;
+            }
+        }
+
+        // Listen for camera responses
+        private async Task ListenForResponsesAsync(int timeoutMs = 5000)
+        {
+            var startTime = DateTime.Now;
+            var endTime = startTime.AddMilliseconds(timeoutMs);
+
+            try
+            {
+                while (DateTime.Now < endTime && isDiscovering)
+                {
+                    var receiveTask = receiveClient.ReceiveAsync();
+                    var timeoutTask = Task.Delay(1000); // Check every second
+
+                    var completedTask = await Task.WhenAny(receiveTask, timeoutTask);
+
+                    if (completedTask == receiveTask)
+                    {
+                        var result = await receiveTask;
+                        ProcessCameraResponse(result.Buffer, result.RemoteEndPoint);
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                if (isDiscovering) // Only show error if we're still supposed to be discovering
+                {
+                    this.Invoke(new Action(() =>
+                    {
+                        MessageBox.Show($"Error listening for responses: {ex.Message}", "Network Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }));
+                }
+            }
+        }
+
+        // Process received camera response
+        private void ProcessCameraResponse(byte[] data, IPEndPoint remoteEndPoint)
+        {
+            try
+            {
+                if (data.Length == Marshal.SizeOf<DataPacketIPv4>())
+                {
+                    DataPacketIPv4 response = ByteArrayToStructure(data);
+
+                    // Check if this is a valid camera response
+                    if (response.mode == RES_REQ_SCAN)
+                    {
+                        string cameraIP = ExtractString(response.ip_addr);
+                        string deviceName = ExtractString(response.device_name);
+                        string macAddress = ExtractString(response.mac_addr);
+                        string packetId = ExtractString(response.packet_id);
+
+                        // Use the IP from the response or fall back to the sender's IP
+                        if (string.IsNullOrEmpty(cameraIP))
+                        {
+                            cameraIP = remoteEndPoint.Address.ToString();
+                        }
+
+                        // Create camera name
+                        string cameraName = !string.IsNullOrEmpty(deviceName) ? deviceName : $"Camera {cameraIP}";
+
+                        // Create camera object
+                        Camera discoveredCamera = new Camera(
+                            $"{deviceName} - ({cameraIP})",
+                            cameraIP,
+                            $"MAC: {macAddress}",
+                            packetId // Using packet_id as serial for uniqueness
+                        );
+
+                        // Add camera to list (must be done on UI thread)
+                        this.Invoke(new Action(() =>
+                        {
+                            add_camera(discoveredCamera);
+                            toolStripStatusLabel.Text = $"Found camera: {cameraName} ({cameraIP})";
+                        }));
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                this.Invoke(new Action(() =>
+                {
+                    MessageBox.Show($"Error processing camera response: {ex.Message}", "Processing Error", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                }));
+            }
+        }
+
+        // Main discovery method
+        private async void discover_cameras()
+        {
+            if (isDiscovering)
+            {
+                MessageBox.Show("Discovery is already in progress.", "Discovery", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                return;
+            }
+
+            if (sendClient == null || receiveClient == null)
+            {
+                InitializeUdpClients();
+                if (sendClient == null || receiveClient == null)
+                {
+                    MessageBox.Show("Failed to initialize network clients.", "Network Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    return;
+                }
+            }
+
+            isDiscovering = true;
+            toolStripStatusLabel.Text = "Discovering cameras...";
+
+            try
+            {
+                // Create and send discovery packet
+                DataPacketIPv4 discoveryPacket = CreateDiscoveryPacket();
+                bool sent = await SendDiscoveryPacketAsync(discoveryPacket);
+
+                if (sent)
+                {
+                    // Listen for responses for 10 seconds
+                    await ListenForResponsesAsync(10000);
+                }
+                else
+                {
+                    MessageBox.Show("Failed to send discovery packet.", "Network Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show($"Discovery error: {ex.Message}", "Discovery Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+            finally
+            {
+                isDiscovering = false;
+                toolStripStatusLabel.Text = $"Discovery complete. Found {all_cameras.Count} cameras.";
+            }
+        }
+
+        // Clean up resources when form is closing
+        protected override void OnFormClosing(FormClosingEventArgs e)
+        {
+            isDiscovering = false;
+
+            try
+            {
+                sendClient?.Close();
+                receiveClient?.Close();
+            }
+            catch { }
+
+            base.OnFormClosing(e);
+        }
     }
 }

MainForm.resx

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
   <!--
-    Microsoft ResX Schema 
+    Microsoft ResX Schema
 
     Version 2.0
 
@@ -48,7 +48,7 @@
     value   : The object must be serialized with
             : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
             : and then encoded with base64 encoding.
-    
+
     mimetype: application/x-microsoft.net.object.soap.base64
     value   : The object must be serialized with
             : System.Runtime.Serialization.Formatters.Soap.SoapFormatter

Properties/Resources.Designer.cs

@@ -0,0 +1,63 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace robospot_camera_finder.Properties {
+    using System;
+    
+    
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "17.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources {
+        
+        private static global::System.Resources.ResourceManager resourceMan;
+        
+        private static global::System.Globalization.CultureInfo resourceCulture;
+        
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources() {
+        }
+        
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager {
+            get {
+                if (object.ReferenceEquals(resourceMan, null)) {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("robospot_camera_finder.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+    }
+}

Properties/Resources.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

StreamViewer.Designer.cs

@@ -39,8 +39,6 @@ namespace robospot_camera_finder
             btnZoomMax = new Button();
             tbRtspLink = new TextBox();
             lblRtspLink = new Label();
-            labelSerial = new Label();
-            tbSerial = new TextBox();
             cbTestZoom = new CheckBox();
             timerZoomTestSeq = new System.Windows.Forms.Timer(components);
             ((System.ComponentModel.ISupportInitialize)videoView).BeginInit();
@@ -109,41 +107,22 @@ namespace robospot_camera_finder
             // tbRtspLink
             // 
             tbRtspLink.Anchor = AnchorStyles.Bottom | AnchorStyles.Left;
-            tbRtspLink.Location = new Point(312, 492);
+            tbRtspLink.Location = new Point(75, 492);
             tbRtspLink.Name = "tbRtspLink";
             tbRtspLink.ReadOnly = true;
-            tbRtspLink.Size = new Size(215, 23);
+            tbRtspLink.Size = new Size(559, 23);
             tbRtspLink.TabIndex = 8;
             // 
             // lblRtspLink
             // 
             lblRtspLink.Anchor = AnchorStyles.Bottom | AnchorStyles.Left;
             lblRtspLink.AutoSize = true;
-            lblRtspLink.Location = new Point(249, 494);
+            lblRtspLink.Location = new Point(12, 495);
             lblRtspLink.Name = "lblRtspLink";
             lblRtspLink.Size = new Size(57, 15);
             lblRtspLink.TabIndex = 7;
             lblRtspLink.Text = "RTSP Link";
             // 
-            // labelSerial
-            // 
-            labelSerial.Anchor = AnchorStyles.Bottom | AnchorStyles.Left;
-            labelSerial.AutoSize = true;
-            labelSerial.Location = new Point(9, 494);
-            labelSerial.Name = "labelSerial";
-            labelSerial.Size = new Size(82, 15);
-            labelSerial.TabIndex = 6;
-            labelSerial.Text = "Serial Number";
-            // 
-            // tbSerial
-            // 
-            tbSerial.Anchor = AnchorStyles.Bottom | AnchorStyles.Left;
-            tbSerial.Location = new Point(102, 492);
-            tbSerial.Name = "tbSerial";
-            tbSerial.ReadOnly = true;
-            tbSerial.Size = new Size(124, 23);
-            tbSerial.TabIndex = 5;
-            // 
             // cbTestZoom
             // 
             cbTestZoom.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
@@ -170,9 +149,7 @@ namespace robospot_camera_finder
             Controls.Add(tbRtspLink);
             Controls.Add(lblRtspLink);
             Controls.Add(videoView);
-            Controls.Add(labelSerial);
             Controls.Add(btnZoomMax);
-            Controls.Add(tbSerial);
             Controls.Add(tbZoom);
             Controls.Add(btnZoomMin);
             Icon = (Icon)resources.GetObject("$this.Icon");
@@ -194,8 +171,6 @@ namespace robospot_camera_finder
         private System.Windows.Forms.Timer timerUpdateZoom;
         private Button btnZoomMin;
         private Button btnZoomMax;
-        private Label labelSerial;
-        private TextBox tbSerial;
         private TextBox tbRtspLink;
         private Label lblRtspLink;
         private CheckBox cbTestZoom;

StreamViewer.cs

@@ -29,7 +29,6 @@ namespace robospot_camera_finder
 
             updateZoomSlider();
 
-            tbSerial.Text = camera.camera_serial;
             tbRtspLink.Text = rtsp_link;
 
             videoView.MediaPlayer = _mp;

StreamViewer.resx

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
   <!--
-    Microsoft ResX Schema 
+    Microsoft ResX Schema
 
     Version 2.0
 
@@ -48,7 +48,7 @@
     value   : The object must be serialized with
             : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
             : and then encoded with base64 encoding.
-    
+
     mimetype: application/x-microsoft.net.object.soap.base64
     value   : The object must be serialized with
             : System.Runtime.Serialization.Formatters.Soap.SoapFormatter

robospot-camera-finder.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net7.0-windows</TargetFramework>
+    <TargetFramework>net9.0-windows7.0</TargetFramework>
     <RootNamespace>robospot_camera_finder</RootNamespace>
     <Nullable>enable</Nullable>
     <UseWindowsForms>true</UseWindowsForms>
@@ -19,8 +19,22 @@
     <PackageReference Include="LibVLCSharp" Version="3.8.2" />
     <PackageReference Include="LibVLCSharp.Forms" Version="3.8.2" />
     <PackageReference Include="LibVLCSharp.WinForms" Version="3.8.2" />
-    <PackageReference Include="Tmds.MDns" Version="0.8.0" />
     <PackageReference Include="VideoLAN.LibVLC.Windows" Version="3.0.20" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Compile Update="Properties\Resources.Designer.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Update="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+  </ItemGroup>
+
 </Project>