Merge branch 'main' of https://git.innov.energy/Innovenergy/git_trunk

csharp/App/Backend/Program.cs

@@ -7,9 +7,6 @@ namespace InnovEnergy.App.Backend;
 
 public static class Program
 {
-    
-        
-    
     public static void Main(String[] args)
     {
         //Db.CreateFakeRelations();

csharp/App/SaliMax/run (SalimnaxProto Meiringen).sh

@@ -9,8 +9,9 @@ set -e
 
 echo -e "\n============================ Build ============================\n" 
 
-dotnet publish \
+dotnet publish  \
        ./SaliMax.csproj \
+       -p:PublishTrimmed=false \
        -c Release \
        -r linux-x64 
 

csharp/App/SaliMax/src/Ess/Controller.cs

@@ -30,11 +30,17 @@ public static class Controller
         mode.WriteLine();
 
         if (mode is EssMode.Off or EssMode.NoGridMeter)
-            return new EssControl(mode, EssLimit.NoLimit, PowerCorrection: 0, PowerSetpoint: 0);
+            return EssControl.Default;
 
         var essDelta = s.ComputePowerDelta(mode);
 
-        var unlimitedControl = new EssControl(mode, EssLimit.NoLimit, essDelta, 0);
+        var unlimitedControl = new EssControl
+        {
+            Mode            = mode,
+            LimitedBy       = EssLimit.NoLimit,
+            PowerCorrection = essDelta,
+            PowerSetpoint   = 0
+        };
         
         var limitedControl = unlimitedControl
                             .LimitChargePower(s)

csharp/App/SaliMax/src/Ess/EssControl.cs

@@ -3,13 +3,21 @@ using InnovEnergy.Lib.Units.Power;
 namespace InnovEnergy.App.SaliMax.Ess;
 
 public record EssControl
-(
-    EssMode Mode,
-    EssLimit LimitedBy,
-    ActivePower PowerCorrection,
-    ActivePower PowerSetpoint
-)
 {
+    public required EssMode     Mode            { get; init; } 
+    public required EssLimit    LimitedBy       { get; init; } 
+    public required ActivePower PowerCorrection { get; init; }
+    public required ActivePower PowerSetpoint   { get; init; }
+
+    public static EssControl Default { get; } = new()
+    {
+        Mode            = EssMode.Off,
+        LimitedBy       = EssLimit.NoLimit,
+        PowerCorrection = 0,
+        PowerSetpoint   = 0
+    };
+    
+    
     public EssControl LimitChargePower(Double controlDelta, EssLimit reason)
     {
         var overload = PowerCorrection - controlDelta;

csharp/App/SaliMax/src/Ess/StatusRecord.cs

@@ -12,20 +12,20 @@ namespace InnovEnergy.App.SaliMax.Ess;
 
 public record StatusRecord
 {   
-    public AcDcDevicesRecord   AcDc                { get; init; } = null!; 
+    public required AcDcDevicesRecord   AcDc                { get; init; }  
-    public DcDcDevicesRecord   DcDc                { get; init; } = null!; 
+    public required DcDcDevicesRecord   DcDc                { get; init; }  
-    public Battery48TlRecords  Battery             { get; init; } = null!;
+    public required Battery48TlRecords  Battery             { get; init; } 
-    public EmuMeterRegisters?  GridMeter           { get; init; } 
+    public required EmuMeterRegisters?  GridMeter           { get; init; } 
-    public EmuMeterRegisters?  LoadOnAcIsland      { get; init; } 
+    public required EmuMeterRegisters?  LoadOnAcIsland      { get; init; } 
-    public AcPowerDevice?      LoadOnAcGrid        { get; init; } = null!;
+    public required AcPowerDevice?      LoadOnAcGrid        { get; init; } 
-    public AcPowerDevice?      PvOnAcGrid          { get; init; } = null!;
+    public required AcPowerDevice?      PvOnAcGrid          { get; init; } 
-    public AcPowerDevice?      PvOnAcIsland        { get; init; } = null!;
+    public required AcPowerDevice?      PvOnAcIsland        { get; init; } 
-    public AcPowerDevice?      AcGridToAcIsland    { get; init; } = null!;
+    public required AcPowerDevice?      AcGridToAcIsland    { get; init; } 
-    public DcPowerDevice?      LoadOnDc            { get; init; } = null!;
+    public required DcPowerDevice?      LoadOnDc            { get; init; } 
-    public RelaysRecord?       Relays              { get; init; } 
+    public required RelaysRecord?       Relays              { get; init; } 
-    public AmptStatus          PvOnDc              { get; init; } = null!;
+    public required AmptStatus          PvOnDc              { get; init; } 
-    public Config              Config              { get; init; } = null!;
+    public required Config              Config              { get; init; } 
-    public EssControl          EssControl          { get; set; }  = null!;
+    public required EssControl          EssControl          { get; set; }    // TODO: init only
-    public StateMachine        StateMachine        { get; } = new StateMachine();
+    public required StateMachine        StateMachine        { get; init; } 
     
 }

csharp/App/SaliMax/src/Flow.cs

@@ -14,7 +14,7 @@ public static class Flow
 
     public static TextBlock Horizontal(Unit amount, Int32 width = 10)
     {
-        var label     = amount.ToStringRounded();
+        var label     = amount.ToDisplayString();
         var arrowChar = amount.Value < 0 ? LeftArrowChar : RightArrowChar;
         var arrow     = Enumerable.Repeat(arrowChar, width).Join();
 
@@ -26,7 +26,7 @@ public static class Flow
     [SuppressMessage("ReSharper", "CoVariantArrayConversion")]
     public static TextBlock Vertical(Unit amount, Int32 height = 4)
     {
-        var label     = amount.ToStringRounded();
+        var label     = amount.ToDisplayString();
         var arrowChar = amount.Value < 0 ? UpArrowChar : DownArrowChar;
         var halfArrow = Enumerable.Repeat(arrowChar, height/2);
         

csharp/App/SaliMax/src/Program.cs

@@ -148,7 +148,9 @@ internal static class Program
                 LoadOnAcIsland   = loadOnAcIsland,
                 LoadOnDc         = loadOnDc,
                 
-                Config         = Config.Load() // load from disk every iteration, so config can be changed while running
+                StateMachine = StateMachine.Default,  
+                EssControl   = EssControl.Default,
+                Config       = Config.Load() // load from disk every iteration, so config can be changed while running
             };
         }
         
@@ -228,17 +230,17 @@ internal static class Program
         var islandToGridBusPower = inverterPower + islandLoadPower;
         var gridLoadPower        = s.LoadOnAcGrid is null ? 0: s.LoadOnAcGrid.Power.Active;
 
-        var gridPowerByPhase     = TextBlock.AlignLeft(s.GridMeter.Ac.L1.Power.Active.ToStringRounded(), 
+        var gridPowerByPhase     = TextBlock.AlignLeft(s.GridMeter.Ac.L1.Power.Active.ToDisplayString(), 
-                                                       s.GridMeter.Ac.L2.Power.Active.ToStringRounded(),
+                                                       s.GridMeter.Ac.L2.Power.Active.ToDisplayString(),
-                                                       s.GridMeter.Ac.L3.Power.Active.ToStringRounded());
+                                                       s.GridMeter.Ac.L3.Power.Active.ToDisplayString());
         
-        var gridVoltageByPhase   = TextBlock.AlignLeft(s.GridMeter.Ac.L1.Voltage.ToStringRounded(), 
+        var gridVoltageByPhase   = TextBlock.AlignLeft(s.GridMeter.Ac.L1.Voltage.ToDisplayString(), 
-                                                       s.GridMeter.Ac.L2.Voltage.ToStringRounded(),
+                                                       s.GridMeter.Ac.L2.Voltage.ToDisplayString(),
-                                                       s.GridMeter.Ac.L3.Voltage.ToStringRounded());
+                                                       s.GridMeter.Ac.L3.Voltage.ToDisplayString());
                 
-        var inverterPowerByPhase = TextBlock.AlignLeft(s.AcDc.Ac.L1.Power.Active.ToStringRounded(), 
+        var inverterPowerByPhase = TextBlock.AlignLeft(s.AcDc.Ac.L1.Power.Active.ToDisplayString(), 
-                                                       s.AcDc.Ac.L2.Power.Active.ToStringRounded(),
+                                                       s.AcDc.Ac.L2.Power.Active.ToDisplayString(),
-                                                       s.AcDc.Ac.L3.Power.Active.ToStringRounded());
+                                                       s.AcDc.Ac.L3.Power.Active.ToDisplayString());
 
         // ReSharper disable once CoVariantArrayConversion
         var inverterPowerByAcDc = TextBlock.AlignLeft(s.AcDc.Devices
@@ -246,7 +248,7 @@ internal static class Program
                                                        .ToArray());
 
         var dcLinkVoltage       = TextBlock.CenterHorizontal("", 
-                                                             s.DcDc.Dc.Link.Voltage.ToStringRounded(),
+                                                             s.DcDc.Dc.Link.Voltage.ToDisplayString(),
                                                              "");
         
         //var inverterPowerByPhase     = new ActivePower[(Int32)s.AcDc.Ac.L1.Power.Active, (Int32)s.AcDc.Ac.L2.Power.Active, (Int32)s.AcDc.Ac.L3.Power.Active];
@@ -273,7 +275,7 @@ internal static class Program
         var gridBox     = TextBlock.AlignLeft(gridPowerByPhase).TitleBox("Grid");
         var inverterBox = TextBlock.AlignLeft(inverterPowerByAcDc).TitleBox("Inverter");
         var dcDcBox     = TextBlock.AlignLeft(dc48Voltage).TitleBox("DC/DC");
-        var batteryBox  = TextBlock.AlignLeft(batteryVoltage.ToStringRounded(), batterySoc.ToStringRounded(), batteryCurrent.ToStringRounded(), batteryTemp.ToStringRounded()).TitleBox("Battery");
+        var batteryBox  = TextBlock.AlignLeft(batteryVoltage.ToDisplayString(), batterySoc.ToDisplayString(), batteryCurrent.ToDisplayString(), batteryTemp.ToDisplayString()).TitleBox("Battery");
 
 
         

csharp/App/SaliMax/src/S3Config.cs

@@ -9,12 +9,12 @@ namespace InnovEnergy.App.SaliMax;
 
 public record S3Config
 {
-    public String Bucket      { get; init; } = "";
+    public required String Bucket      { get; init; } 
-    public String Region      { get; init; } = "";
+    public required String Region      { get; init; } 
-    public String Provider    { get; init; } = "";
+    public required String Provider    { get; init; } 
-    public String Key         { get; init; } = "";
+    public required String Key         { get; init; } 
-    public String Secret      { get; init; } = "";
+    public required String Secret      { get; init; } 
-    public String ContentType { get; init; } = "";
+    public required String ContentType { get; init; } 
 
     public String Host =>  $"{Bucket}.{Region}.{Provider}";
     public String Url  =>  $"https://{Host}";

csharp/App/SaliMax/src/System/StateMachine.cs

@@ -1,7 +1,9 @@
 namespace InnovEnergy.App.SaliMax.System;
 
-public class StateMachine
+public record StateMachine
 {
-    public String Message { get; set; } = "Panic: Unknown State!";
+    public required String Message { get; set; }  // TODO: init only 
-    public Int32  State   { get; set; } = 100;
+    public required Int32  State   { get; set; }  // TODO: init only
+
+    public static StateMachine Default { get; } = new StateMachine { State = 100, Message = "Unknown State" };
 }

csharp/InnovEnergy.props

@@ -6,7 +6,7 @@
         <LangVersion>preview</LangVersion>
         <IsTrimmable>true</IsTrimmable>
         <ImplicitUsings>enable</ImplicitUsings>
-        <TargetFramework>net6.0</TargetFramework>
+        <TargetFramework>net7.0</TargetFramework>
         <InvariantGlobalization>true</InvariantGlobalization>
         <SuppressTrimAnalysisWarnings>false</SuppressTrimAnalysisWarnings>
         <RootNamespace>Please.reload.the.project.Rider.is.stupid</RootNamespace>

csharp/Lib/Channels/Stages/Channel.cs

@@ -4,8 +4,8 @@ namespace InnovEnergy.Lib.Channels.Stages;
 
 public class Channel<Tx, Rx>
 {
-    public AsyncAction<Tx> Write { get; init; } = _  => throw new NotImplementedException(nameof(Write));
+    public required AsyncAction<Tx> Write { get; init; } 
-    public Async<Rx>       Read  { get; init; } = () => throw new NotImplementedException(nameof(Read));
+    public required Async<Rx>       Read  { get; init; } 
     
     public Channel<T, R> Map<T, R>(Stage<T, Tx, Rx, R> stage)
     {

csharp/Lib/Channels/Stages/ConnectedChannel.cs

@@ -4,9 +4,9 @@ namespace InnovEnergy.Lib.Channels.Stages;
 
 public class ConnectedChannel<Tx, Rx> : Channel<Tx,Rx>, IAsyncDisposable
 {
-    public Func<Boolean> IsOpen { get; init; } = () => throw new NotImplementedException(nameof(IsOpen));
+    public required Func<Boolean> IsOpen { get; init; } 
-    public AsyncAction   Open   { get; init; } = () => throw new NotImplementedException(nameof(Open));
+    public required AsyncAction   Open   { get; init; } 
-    public AsyncAction   Close  { get; init; } = () => throw new NotImplementedException(nameof(Close));
+    public required AsyncAction   Close  { get; init; } 
     
     public async ValueTask DisposeAsync() => await Close();
 }

csharp/Lib/Devices/AMPT/AmptCommunicationUnitStatus.cs

@@ -1,16 +1,18 @@
 namespace InnovEnergy.Lib.Devices.AMPT;
 
+
+// not used ATM
 public class AmptCommunicationUnitStatus 
 {
-    public UInt32  Sid       { get; init; }                    // A well-known value 0x53756e53, uniquely identifies this as a SunSpec Modbus Map                                             
+    public required UInt32  Sid       { get; init; }                    // A well-known value 0x53756e53, uniquely identifies this as a SunSpec Modbus Map                                             
-    public UInt16  IdSunSpec { get; init; }                    // A well-known value 1, uniquely identifies this as a SunSpec Common Model  
+    public required UInt16  IdSunSpec { get; init; }                    // A well-known value 1, uniquely identifies this as a SunSpec Common Model  
     
-    public String Manufacturer  { get; init; }  = "undefined"; // A well-known value registered with SunSpec for compliance: "Ampt"
+    public required String Manufacturer  { get; init; }   // A well-known value registered with SunSpec for compliance: "Ampt"
-    public String Model         { get; init; }  = "undefined"; // Manufacturer specific value "Communication Unit" 
+    public required String Model         { get; init; }   // Manufacturer specific value "Communication Unit" 
-    public String Version       { get; init; }  = "undefined"; // Software Version      
+    public required String Version       { get; init; }   // Software Version      
-    public String SerialNumber  { get; init; }  = "undefined"; // Manufacturer specific value     
+    public required String SerialNumber  { get; init; }   // Manufacturer specific value     
-    public Int16  DeviceAddress { get; init; }                 // Modbus Device ID
+    public required Int16  DeviceAddress { get; init; }   // Modbus Device ID
-    public UInt16 IdVendor      { get; init; }                 // Ampt SunSpec Vendor Code 64050        
+    public required UInt16 IdVendor      { get; init; }   // Ampt SunSpec Vendor Code 64050        
 
-    public IReadOnlyList<AmptStatus> Devices { get; init; } = Array.Empty<AmptStatus>();
+    public required IReadOnlyList<AmptStatus> Devices { get; init; } 
 }

csharp/Lib/Protocols/DBus/Daemon/MatchRule.cs

@@ -21,13 +21,13 @@ public interface IMatchRule
 
 public record MatchRule : IMatchRule
 {
-    public MessageType?  Type          { get; init; } = default;
+    public MessageType?  Type          { get; init; } 
-    public String?       Interface     { get; init; } = default;
+    public String?       Interface     { get; init; } 
-    public String?       Member        { get; init; } = default;
+    public String?       Member        { get; init; } 
-    public ObjectPath?   Path          { get; init; } = default;
+    public ObjectPath?   Path          { get; init; } 
-    public ObjectPath?   PathNamespace { get; init; } = default;
+    public ObjectPath?   PathNamespace { get; init; } 
-    public String?       Sender        { get; init; } = default;
+    public String?       Sender        { get; init; } 
-    public String?       Destination   { get; init; } = default;
+    public String?       Destination   { get; init; } 
     public Boolean       Eavesdrop     { get; init; } = false;
 
     public override String ToString() => this.Rule();

csharp/Lib/Units/Composite/Ac1Bus.cs

@@ -5,10 +5,10 @@ public sealed class Ac1Bus
     private Ac1Bus()
     {}
 
-    public Voltage   Voltage   { get; private init; } = null!;
+    public required Voltage   Voltage   { get; init; } 
-    public Current   Current   { get; private init; } = null!;
+    public required Current   Current   { get; init; } 
-    public AcPower   Power     { get; private init; } = null!;
+    public required AcPower   Power     { get; init; } 
-    public Frequency Frequency { get; private init; } = null!;
+    public required Frequency Frequency { get; init; } 
 
     public static Ac1Bus FromVoltageCurrentFrequencyPhi(Double voltageRms,
                                                         Double currentRms,

csharp/Lib/Units/Composite/Ac3Bus.cs

@@ -6,11 +6,11 @@ public sealed class Ac3Bus
 {
     private Ac3Bus() {}
 
-    public AcPhase   L1        { get; private init; } = null!;
+    public required AcPhase   L1        { get; init; }
-    public AcPhase   L2        { get; private init; } = null!;
+    public required AcPhase   L2        { get; init; }
-    public AcPhase   L3        { get; private init; } = null!;
+    public required AcPhase   L3        { get; init; }
-    public AcPower   Power     { get; private init; } = null!;
+    public required AcPower   Power     { get; init; }
-    public Frequency Frequency { get; private init; } = null!;
+    public required Frequency Frequency { get; init; }
 
     public static Ac3Bus FromPhasesAndFrequency(AcPhase l1,
                                                 AcPhase l2,

csharp/Lib/Units/Composite/AcPhase.cs

@@ -7,9 +7,9 @@ public sealed class AcPhase
 {
     private AcPhase(){}
     
-    public Voltage Voltage { get; private init; } = null!;
+    public required Voltage Voltage { get; init; } 
-    public Current Current { get; private init; } = null!;
+    public required Current Current { get; init; } 
-    public AcPower Power   { get; private init; } = null!;
+    public required AcPower Power   { get; init; } 
     
     public static AcPhase FromVoltageCurrentPhi(Voltage voltageRms,
                                                 Current currentRms,

csharp/Lib/Units/Composite/AcPower.cs

@@ -8,11 +8,11 @@ public sealed class AcPower
 {
     private AcPower(){}
 
-    public ApparentPower Apparent { get; private init; } = null!;
+    public required ApparentPower Apparent { get; init; } 
-    public ActivePower   Active   { get; private init; } = null!;
+    public required ActivePower   Active   { get; init; } 
-    public ReactivePower Reactive { get; private init; } = null!;
+    public required ReactivePower Reactive { get; init; } 
-    public Angle         Phi      { get; private init; } = null!;
+    public required Angle         Phi      { get; init; } 
-    public Double        CosPhi   { get; private init; } 
+    public required Double        CosPhi   { get; init; } 
     
     public static AcPower FromActiveReactiveApparent(ActivePower activePower, ReactivePower reactivePower, ApparentPower apparentPower)
     {

csharp/Lib/Units/Composite/DcBus.cs

@@ -6,9 +6,9 @@ public sealed class DcBus
 {
    private DcBus() {}
 
-   public Voltage     Voltage { get; private init; } = null!;
+   public required Voltage     Voltage { get; init; } 
-   public Current     Current { get; private init; } = null!;
+   public required Current     Current { get; init; } 
-   public ActivePower Power   { get; private init; } = null!;
+   public required ActivePower Power   { get; init; } 
 
    public static DcBus FromVoltageCurrent(Voltage voltage, Current current) => new()
    {

csharp/Lib/Units/Energy.cs

@@ -2,7 +2,7 @@ namespace InnovEnergy.Lib.Units;
 
 public sealed class Energy : Unit
 {
-    public override String Symbol => "kWh";
+    public override String Symbol => "Wh";
 
     public Energy(Double value) : base(value)
     {

csharp/Lib/Units/Power/ActivePower.cs

@@ -12,7 +12,6 @@ public sealed class ActivePower : AcPower
     public static implicit operator ActivePower(Double d) => new ActivePower(d);
     public static implicit operator Double(ActivePower d) => d.Value;
     
-    
     public static ActivePower operator -(ActivePower d) => -d.Value;
 }
 

csharp/Lib/Units/Unit.cs

@@ -8,5 +8,35 @@ public abstract class Unit
     public Double Value { get;  }
 
     public override String ToString() => $"{Value} {Symbol}";
-    public String ToStringRounded() => $"{Math.Round(Value,3)} {Symbol}";
+
+    public String ToDisplayString()
+    {
+        if (Value == 0)
+            return $"0 {Symbol}";
+
+        var a = Math.Abs(Value);
+        var s = Math.Sign(Value);
+
+        var i = 8;
+
+        while (a >= 10000)
+        {
+            a /= 1000;
+            i++;
+        }
+        while (a < 10)
+        {
+            a *= 1000;
+            i--;
+        }
+
+        var r = a < 100
+            ? Math.Floor(a * 10) / 10
+            : Math.Floor(a);
+
+        return $"{r * s} {Prefix[i]}{Symbol}";
+    }
+
+    private static readonly IReadOnlyList<String> Prefix = new[] { "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Y" };
 }
+

csharp/Lib/Units/Units.cs

@@ -1,5 +1,4 @@
 using System.Collections;
-using System.Reflection;
 using InnovEnergy.Lib.Units.Power;
 using InnovEnergy.Lib.Utils;
 using static System.Reflection.BindingFlags;
@@ -20,7 +19,8 @@ public static class Units
     public static Frequency     Hz     (this Double value) => value;
     public static Angle         Rad    (this Double value) => value;
     public static Temperature   Celsius(this Double value) => value;
-    public static Energy        KWh    (this Double value) => value;
+    public static Energy        KWh    (this Double value) => value * 1000;
+    public static Energy        Wh     (this Double value) => value;
     
     public static String ToCsv(this Object thing)
     {
@@ -88,87 +88,3 @@ public static class Units
     }
 }
 
-public static class Prefixes
-{
-    private static readonly IReadOnlyList<String> Big = new[]
-    {
-        "",
-        "k",
-        "M",
-        "G",
-        "T",
-        "P",
-        "E",
-        "Y",
-    };
-
-    private static readonly IReadOnlyList<String> Small = new[]
-    {
-        "", 
-        "m",
-        "µ",
-        "n",
-        "p",
-        "f",
-        "a",
-        "z",
-        "y",
-    };
-
-    public static String TestGetPrefix(Double v, String unit)
-    {
-        if (v == 0)
-            return "";
-
-        var log10 = Math.Log10(v / 10);
-        var l = (Int32)Math.Floor(log10 / 3);
-        var lookUp = l > 0 ? Big : Small;
-        var i = Math.Abs(l);
-
-        return $"{v / Math.Pow(10.0, l * 3.0)} {lookUp[i]}{unit}";
-    }
-    
-    
-    public static String TestGetPrefix(Decimal v, String unit)
-    {
-        if (v == 0m)
-            return "";
-
-        var d = (Double)v;
-        var log10 = Math.Log10(d / 10);
-        var l = (Int32)Math.Floor(log10 / 3);
-        var lookUp = l > 0 ? Big : Small;
-        var i = Math.Abs(l);
-
-        return $"{d / Math.Pow(10.0, l * 3.0)} {lookUp[i]}{unit}";
-    }
-    
-    public static String TestGetPrefix2(Decimal v, String unit)
-    {
-        if (v == 0m)
-            return "";
-
-        var a = Math.Abs(v);
-        var s = Math.Sign(v);
-        
-        var i = 0;
-
-        while (a >= 10000m)
-        {
-            a /= 1000;
-            i++;
-        }
-        while (a < 10m)
-        {
-            a *= 1000;
-            i--;
-        }
-
-        var lookUp = i >= 0 ? Big : Small;
-        
-        var r = Decimal.Floor(a * 10m) / 10m;      
-
-        return $"{r*s} {lookUp[Math.Abs(i)]}{unit}";
-    }
-
-}

csharp/Lib/WebServer/Default.cs

@@ -5,8 +5,8 @@ namespace InnovEnergy.Lib.WebServer;
 
 public static class Default
 {
-    public static IPEndPoint   EndPoint { get; } = new IPEndPoint(0, 0);
+    public static IPEndPoint   EndPoint      { get; } = new IPEndPoint(0, 0);
-    public static Url          Url      { get; } = new Url("");
+    public static Url          Url           { get; } = new Url("");
     public static HttpResponse HttpNotFound  { get; } = new HttpResponse { StatusCode = 404 };
     public static HttpResponse HttpForbidden { get; } = new HttpResponse { StatusCode = 403 };