Add Selectable Network Interface in Web Server Form (#1511)

* Add Selectable Network Interface in Web Server

Update the Web Server port form to allow for editing the network interface the web server is run on. Added storage of the interface to the settings so it is persisted.

This should resolve issue #1089 .

* Update HttpServer.cs

---------

Co-authored-by: PhyxionNL <7643972+PhyxionNL@users.noreply.github.com>

Author: techberet

LibreHardwareMonitor/LibreHardwareMonitor.csproj

@@ -44,8 +44,8 @@
     <Compile Update="UI\ParameterForm.Designer.cs">
       <DependentUpon>ParameterForm.cs</DependentUpon>
     </Compile>
-    <Compile Update="UI\PortForm.Designer.cs">
-      <DependentUpon>PortForm.cs</DependentUpon>
+    <Compile Update="UI\InterfacePortForm.Designer.cs">
+      <DependentUpon>InterfacePortForm.cs</DependentUpon>
     </Compile>
   </ItemGroup>
   <ItemGroup>
@@ -61,8 +61,8 @@
     <EmbeddedResource Update="UI\ParameterForm.resx">
       <DependentUpon>ParameterForm.cs</DependentUpon>
     </EmbeddedResource>
-    <EmbeddedResource Update="UI\PortForm.resx">
-      <DependentUpon>PortForm.cs</DependentUpon>
+    <EmbeddedResource Update="UI\InterfacePortForm.resx">
+      <DependentUpon>InterfacePortForm.cs</DependentUpon>
     </EmbeddedResource>
   </ItemGroup>
   <ItemGroup>

…eHardwareMonitor/UI/PortForm.Designer.cs …Monitor/UI/InterfacePortForm.Designer.csLibreHardwareMonitor/UI/PortForm.Designer.cs renamed to LibreHardwareMonitor/UI/InterfacePortForm.Designer.cs LibreHardwareMonitor/UI/PortForm.Designer.cs renamed to LibreHardwareMonitor/UI/InterfacePortForm.Designer.cs

@@ -9,36 +9,50 @@
 using System.Net;
 using System.Net.Sockets;
 using System.Diagnostics;
+using static System.Windows.Forms.VisualStyles.VisualStyleElement;
+using System.Net.NetworkInformation;
 
 namespace LibreHardwareMonitor.UI;
 
-public partial class PortForm : Form
+public partial class InterfacePortForm : Form
 {
     private readonly MainForm _parent;
-    private readonly string _localIP;
-    public PortForm(MainForm m)
+    private string _localIP;
+    
+    public InterfacePortForm(MainForm m)
     {
         InitializeComponent();
         _parent = m;
-        _localIP = GetLocalIP();
+        _localIP = LoadNetworkInterfaces(_parent.Server.ListenerIp);
     }
 
-    private void PortTextBox_TextChanged(object sender, EventArgs e)
-    {
-
-    }
-
-    private string GetLocalIP()
+    private string LoadNetworkInterfaces(string selectedListenerIp)
     {
         IPHostEntry host;
-        string localIP = "?";
+        interfaceComboBox.Items.Clear();
         host = Dns.GetHostEntry(Dns.GetHostName());
         foreach (IPAddress ip in host.AddressList)
         {
             if (ip.AddressFamily == AddressFamily.InterNetwork)
-                localIP = ip.ToString();
+                interfaceComboBox.Items.Add(ip.ToString());
+        }
+        // select the last one by default to match the existing behavior
+        if (interfaceComboBox.Items.Count > 0)
+        {
+            interfaceComboBox.SelectedIndex = interfaceComboBox.Items.Count - 1;
+        } else
+        {
+            // default to ? just like previous version
+            interfaceComboBox.Items.Add("?");
+            interfaceComboBox.SelectedIndex = 0;
         }
-        return localIP;
+        // check to see if the selected listener IP is in our list.
+        if (interfaceComboBox.Items.Contains(selectedListenerIp))
+        {
+            // default it to the previously selected IP.
+            interfaceComboBox.SelectedItem = selectedListenerIp;
+        }
+        return interfaceComboBox.SelectedItem as string;
     }
 
     private void PortNumericUpDn_ValueChanged(object sender, EventArgs e)
@@ -52,6 +66,7 @@ private void PortNumericUpDn_ValueChanged(object sender, EventArgs e)
     private void PortOKButton_Click(object sender, EventArgs e)
     {
         _parent.Server.ListenerPort = (int)portNumericUpDn.Value;
+        _parent.Server.ListenerIp = _localIP;
         Close();
     }
 
@@ -62,6 +77,7 @@ private void PortCancelButton_Click(object sender, EventArgs e)
 
     private void PortForm_Load(object sender, EventArgs e)
     {
+        interfaceComboBox.SelectedValue = _parent.Server.ListenerIp;
         portNumericUpDn.Value = _parent.Server.ListenerPort;
         PortNumericUpDn_ValueChanged(null, null);
     }
@@ -79,4 +95,11 @@ private void PortNumericUpDn_KeyUp(object sender, KeyEventArgs e)
     {
         PortNumericUpDn_ValueChanged(null, null);
     }
-}
+
+    private void interfaceComboBox_SelectedIndexChanged(object sender, EventArgs e)
+    {
+
+        _localIP = interfaceComboBox.SelectedItem as string;
+        PortNumericUpDn_ValueChanged(null, null);
+    }
+}

LibreHardwareMonitor/UI/PortForm.cs …eHardwareMonitor/UI/InterfacePortForm.csLibreHardwareMonitor/UI/PortForm.cs renamed to LibreHardwareMonitor/UI/InterfacePortForm.cs LibreHardwareMonitor/UI/PortForm.cs renamed to LibreHardwareMonitor/UI/InterfacePortForm.cs

@@ -244,6 +244,7 @@ public MainForm()
         fahrenheitMenuItem.Checked = !celsiusMenuItem.Checked;
 
         Server = new HttpServer(_root,
+                                _settings.GetValue("listenerIp", "?"),
                                 _settings.GetValue("listenerPort", 8085),
                                 _settings.GetValue("authenticationEnabled", false),
                                 _settings.GetValue("authenticationUserName", ""),
@@ -878,6 +879,7 @@ private void SaveConfiguration()
         foreach (TreeColumn column in treeView.Columns)
             _settings.SetValue("treeView.Columns." + column.Header + ".Width", column.Width);
 
+        _settings.SetValue("listenerIp", Server.ListenerIp);
         _settings.SetValue("listenerPort", Server.ListenerPort);
         _settings.SetValue("authenticationEnabled", Server.AuthEnabled);
         _settings.SetValue("authenticationUserName", Server.UserName);
@@ -1296,9 +1298,9 @@ private void TreeView_ColumnWidthChanged(TreeColumn column)
         }
     }
 
-    private void ServerPortMenuItem_Click(object sender, EventArgs e)
+    private void ServerInterfacePortMenuItem_Click(object sender, EventArgs e)
     {
-        new PortForm(this).ShowDialog();
+        new InterfacePortForm(this).ShowDialog();
     }
 
     private void AuthWebServerMenuItem_Click(object sender, EventArgs e)