The call to Dns.GetHostEntry() may fail on MacOS (#1927)

* The call to Dns.GetHostEntry() may fail on MacOS

... only ever seen there.

* Build on one CPU only

Maybe this avoids the concurrency problems?

* Revert "Build on one CPU only"

This reverts commit 7ee8124b4ceb5e31df7f74d7da4e908ad96aaac3.

* Make sure there's only one .csproj per directory

Therefore split up sample folders containing multiple
projects into subfolders. This fixes the macOS build and
also some weird issues on other operating systems (such
as the debugger getting confused about which one to execute)

* Also update the solution files

src/devices/Arduino/Arduino.sln

@@ -7,7 +7,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Arduino", "Arduino.csproj",
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "System.Device.Gpio", "..\..\System.Device.Gpio\System.Device.Gpio.csproj", "{0B90F9D4-7353-4172-A317-714471A06781}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Arduino.sample", "samples\Arduino.sample.csproj", "{2670F7BF-A7C8-49EB-9A99-1719A90D0C67}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Arduino.sample", "samples\ApiChecker\Arduino.sample.csproj", "{2670F7BF-A7C8-49EB-9A99-1719A90D0C67}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bmxx80", "..\Bmxx80\Bmxx80.csproj", "{EEEB0FB8-E1ED-4970-BDF6-DA3D5E2ED074}"
 EndProject
@@ -21,7 +21,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CpuTemperature", "..\CpuTem
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{9E5A25ED-9839-4C1A-9B27-993437D1CB31}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Arduino.Monitor", "samples\Arduino.Monitor.csproj", "{23B4B60C-9594-42BB-9D25-C54983B0F809}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Arduino.Monitor", "samples\Monitor\Arduino.Monitor.csproj", "{23B4B60C-9594-42BB-9D25-C54983B0F809}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tests", "tests", "{CA26B999-4C0E-4E82-A46E-A68AC1B85C10}"
 EndProject

src/devices/Arduino/samples/Arduino.sample.csproj → src/devices/Arduino/samples/ApiChecker/Arduino.sample.csproj

@@ -16,10 +16,9 @@
     <Compile Include="TestCases.cs" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\Bmxx80\Bmxx80.csproj" />
-    <ProjectReference Include="..\..\Board\Board.csproj" />
-    <ProjectReference Include="..\..\Common\Common.csproj" />
-    <ProjectReference Include="..\..\Mcp3xxx\Mcp3xxx.csproj" />
-    <ProjectReference Include="..\Arduino.csproj" />
+    <ProjectReference Include="..\..\..\Bmxx80\Bmxx80.csproj" />
+    <ProjectReference Include="..\..\..\Board\Board.csproj" />
+    <ProjectReference Include="..\..\..\Mcp3xxx\Mcp3xxx.csproj" />
+    <ProjectReference Include="..\..\Arduino.csproj" />
   </ItemGroup>
 </Project>
\ No newline at end of file

src/devices/Arduino/samples/Arduino.Monitor.csproj → src/devices/Arduino/samples/Monitor/Arduino.Monitor.csproj

@@ -14,13 +14,12 @@
     <Compile Include="Arduino.Monitor.cs" />
   </ItemGroup>
   <ItemGroup>
-    <!--Cases used when running in VS, with the solution config either Windows-Debug or Linux-Debug (or -Release) -->
-    <ProjectReference Include="..\..\Bmxx80\Bmxx80.csproj" />
-    <ProjectReference Include="..\..\Button\Button.csproj" />
-    <ProjectReference Include="..\..\Board\Board.csproj" />
-    <ProjectReference Include="..\..\CharacterLcd\CharacterLcd.csproj" />
-    <ProjectReference Include="..\..\HardwareMonitor\HardwareMonitor.csproj" />
-    <ProjectReference Include="..\..\Mcp3xxx\Mcp3xxx.csproj" />
-    <ProjectReference Include="..\Arduino.csproj" />
+    <ProjectReference Include="..\..\..\Bmxx80\Bmxx80.csproj" />
+    <ProjectReference Include="..\..\..\Button\Button.csproj" />
+    <ProjectReference Include="..\..\..\Board\Board.csproj" />
+    <ProjectReference Include="..\..\..\CharacterLcd\CharacterLcd.csproj" />
+    <ProjectReference Include="..\..\..\HardwareMonitor\HardwareMonitor.csproj" />
+    <ProjectReference Include="..\..\..\Mcp3xxx\Mcp3xxx.csproj" />
+    <ProjectReference Include="..\..\Arduino.csproj" />
   </ItemGroup>
 </Project>
\ No newline at end of file

src/devices/Arduino/tests/Arduino.Tests.csproj

@@ -10,7 +10,7 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <ItemGroup>
-    <ProjectReference Include="../Arduino.csproj" />
+    <ProjectReference Include="..\Arduino.csproj" />
     <ProjectReference Include="..\..\..\..\tools\ArduinoCsCompiler\Frontend\Frontend.csproj" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="5.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="5.0.0" />

src/devices/Bh1745/Bh1745.sln

@@ -5,9 +5,9 @@ VisualStudioVersion = 16.0.31205.134
 MinimumVisualStudioVersion = 15.0.26124.0
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{EA121A48-7916-4D9D-94C8-8E59BCDE3A96}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bh1745.Sample", "samples\Bh1745.Sample.csproj", "{24A728CA-F4EF-4DB0-B13F-65FFD772352B}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bh1745.Sample", "samples\BH1745\Bh1745.Sample.csproj", "{24A728CA-F4EF-4DB0-B13F-65FFD772352B}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bh1745CustomConfiguration.Sample", "samples\Bh1745CustomConfiguration.Sample.csproj", "{F6ED35EA-2FDE-4056-8165-0FAB6CE5DD5E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bh1745CustomConfiguration.Sample", "samples\CustomConfiguration\Bh1745CustomConfiguration.Sample.csproj", "{F6ED35EA-2FDE-4056-8165-0FAB6CE5DD5E}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bh1745", "Bh1745.csproj", "{C572C86D-5BB2-4610-84EA-768257758933}"
 EndProject

src/devices/Bh1745/samples/Bh1745.Sample.csproj → src/devices/Bh1745/samples/BH1745/Bh1745.Sample.csproj

@@ -5,9 +5,9 @@
     <EnableDefaultItems>false</EnableDefaultItems>
   </PropertyGroup>
   <ItemGroup>
-    <Compile Include="Program.cs" />
+    <Compile Include="Bh1745.cs" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="../Bh1745.csproj" />
+    <ProjectReference Include="../../Bh1745.csproj" />
   </ItemGroup>
 </Project>
\ No newline at end of file

src/devices/Bh1745/samples/CustomConfiguration/Bh1745CustomConfiguration.Sample.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>$(DefaultSampleTfms)</TargetFramework>
+    <EnableDefaultItems>false</EnableDefaultItems>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="Bh1745.CustomConfiguration.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="../../Bh1745.csproj" />
+  </ItemGroup>
+</Project>
\ No newline at end of file

src/devices/Bmxx80/Bmxx80.sln

@@ -5,11 +5,11 @@ VisualStudioVersion = 16.0.30011.22
 MinimumVisualStudioVersion = 15.0.26124.0
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{3810A23A-DF9E-4956-961F-10272B731209}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bme280.sample", "samples\Bme280.sample.csproj", "{5F20AA65-F5E2-4CD9-8847-1508DA362092}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bme280.sample", "samples\Bme280\Bme280.sample.csproj", "{5F20AA65-F5E2-4CD9-8847-1508DA362092}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bme680.sample", "samples\Bme680.sample.csproj", "{0583C743-4EE5-4150-8886-AABC1EB6A339}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bme680.sample", "samples\Bme680\Bme680.sample.csproj", "{0583C743-4EE5-4150-8886-AABC1EB6A339}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bmp280.sample", "samples\Bmp280.sample.csproj", "{99456915-2483-4C22-8F63-8817A097F2E2}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bmp280.sample", "samples\Bmp280\Bmp280.sample.csproj", "{99456915-2483-4C22-8F63-8817A097F2E2}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Bmxx80", "Bmxx80.csproj", "{D0AA8380-159F-445B-A081-D750B9062ADA}"
 EndProject

src/devices/Bmxx80/samples/Bme280.sample.csproj

-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>$(DefaultSampleTfms)</TargetFramework>
-    <EnableDefaultItems>false</EnableDefaultItems>
-  </PropertyGroup>
-  <ItemGroup>
-    <None Remove="rpi-bmp280_i2c.fzz" />
-    <None Remove="rpi-bmp280_i2c.png" />
-  </ItemGroup>
-  <ItemGroup>
-    <Compile Include="Bme280.sample.cs" />
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\Bmxx80.csproj" />
-  </ItemGroup>
-</Project>
\ No newline at end of file

src/devices/Bh1745/samples/Bh1745CustomConfiguration.Sample.csproj → src/devices/Bmxx80/samples/Bme280/Bme280.sample.csproj

@@ -5,9 +5,9 @@
     <EnableDefaultItems>false</EnableDefaultItems>
   </PropertyGroup>
   <ItemGroup>
-    <Compile Include="Program.CustomConfiguration.cs" />
+    <Compile Include="Bme280.sample.cs" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="../Bh1745.csproj" />
+    <ProjectReference Include="../../Bmxx80.csproj" />
   </ItemGroup>
 </Project>
\ No newline at end of file

src/devices/Bmxx80/samples/Bme680.sample.cs → src/devices/Bmxx80/samples/Bme680/Bme680.sample.cs

-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-
-using System;
-using System.Device.I2c;
-using System.Threading;
-using Iot.Device.Bmxx80;
-using Iot.Device.Common;
-using UnitsNet;
-
-Console.WriteLine("Hello BME680!");
-
-// The I2C bus ID on the Raspberry Pi 3.
-const int busId = 1;
-// set this to the current sea level pressure in the area for correct altitude readings
-Pressure defaultSeaLevelPressure = WeatherHelper.MeanSeaLevel;
-
-I2cConnectionSettings i2cSettings = new(busId, Bme680.DefaultI2cAddress);
-I2cDevice i2cDevice = I2cDevice.Create(i2cSettings);
-
-using Bme680 bme680 = new Bme680(i2cDevice, Temperature.FromDegreesCelsius(20.0));
-
-while (true)
-{
-    // reset will change settings back to default
-    bme680.Reset();
-
-    // 10 consecutive measurement with default settings
-    for (var i = 0; i < 10; i++)
-    {
-        // Perform a synchronous measurement
-        var readResult = bme680.Read();
-
-        // Print out the measured data
-        Console.WriteLine($"Gas resistance: {readResult.GasResistance?.Ohms:0.##}Ohm");
-        Console.WriteLine($"Temperature: {readResult.Temperature?.DegreesCelsius:0.#}\u00B0C");
-        Console.WriteLine($"Pressure: {readResult.Pressure?.Hectopascals:0.##}hPa");
-        Console.WriteLine($"Relative humidity: {readResult.Humidity?.Percent:0.#}%");
-
-        if (readResult.Temperature.HasValue && readResult.Pressure.HasValue)
-        {
-            var altValue = WeatherHelper.CalculateAltitude(readResult.Pressure.Value, defaultSeaLevelPressure, readResult.Temperature.Value);
-            Console.WriteLine($"Altitude: {altValue.Meters:0.##}m");
-        }
-
-        if (readResult.Temperature.HasValue && readResult.Humidity.HasValue)
-        {
-            // WeatherHelper supports more calculations, such as saturated vapor pressure, actual vapor pressure and absolute humidity.
-            Console.WriteLine($"Heat index: {WeatherHelper.CalculateHeatIndex(readResult.Temperature.Value, readResult.Humidity.Value).DegreesCelsius:0.#}\u00B0C");
-            Console.WriteLine($"Dew point: {WeatherHelper.CalculateDewPoint(readResult.Temperature.Value, readResult.Humidity.Value).DegreesCelsius:0.#}\u00B0C");
-        }
-
-        // when measuring the gas resistance on each cycle it is important to wait a certain interval
-        // because a heating plate is activated which will heat up the sensor without sleep, this can
-        // falsify all readings coming from the sensor
-        Thread.Sleep(1000);
-    }
-
-    // change the settings
-    bme680.TemperatureSampling = Sampling.HighResolution;
-    bme680.HumiditySampling = Sampling.UltraHighResolution;
-    bme680.PressureSampling = Sampling.Skipped;
-
-    bme680.ConfigureHeatingProfile(Bme680HeaterProfile.Profile2, Temperature.FromDegreesCelsius(280), Duration.FromMilliseconds(80), Temperature.FromDegreesCelsius(24));
-    bme680.HeaterProfile = Bme680HeaterProfile.Profile2;
-
-    // 10 consecutive measurements with custom settings
-    for (int i = 0; i < 10; i++)
-    {
-        // Perform an asynchronous measurement
-        var readResult = await bme680.ReadAsync();
-
-        // Print out the measured data
-        Console.WriteLine($"Gas resistance: {readResult.GasResistance?.Ohms:0.##}Ohm");
-        Console.WriteLine($"Temperature: {readResult.Temperature?.DegreesCelsius:0.#}\u00B0C");
-        Console.WriteLine($"Pressure: {readResult.Pressure?.Hectopascals:0.##}hPa");
-        Console.WriteLine($"Relative humidity: {readResult.Humidity?.Percent:0.#}%");
-
-        if (readResult.Temperature.HasValue && readResult.Pressure.HasValue)
-        {
-            var altValue = WeatherHelper.CalculateAltitude(readResult.Pressure.Value, defaultSeaLevelPressure, readResult.Temperature.Value);
-            Console.WriteLine($"Altitude: {altValue.Meters:0.##}m");
-        }
-
-        if (readResult.Temperature.HasValue && readResult.Humidity.HasValue)
-        {
-            // WeatherHelper supports more calculations, such as saturated vapor pressure, actual vapor pressure and absolute humidity.
-            Console.WriteLine($"Heat index: {WeatherHelper.CalculateHeatIndex(readResult.Temperature.Value, readResult.Humidity.Value).DegreesCelsius:0.#}\u00B0C");
-            Console.WriteLine($"Dew point: {WeatherHelper.CalculateDewPoint(readResult.Temperature.Value, readResult.Humidity.Value).DegreesCelsius:0.#}\u00B0C");
-        }
-
-        Thread.Sleep(1000);
-    }
-}
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using System.Device.I2c;
+using System.Threading;
+using Iot.Device.Bmxx80;
+using Iot.Device.Common;
+using UnitsNet;
+
+Console.WriteLine("Hello BME680!");
+
+// The I2C bus ID on the Raspberry Pi 3.
+const int busId = 1;
+// set this to the current sea level pressure in the area for correct altitude readings
+Pressure defaultSeaLevelPressure = WeatherHelper.MeanSeaLevel;
+
+I2cConnectionSettings i2cSettings = new(busId, Bme680.DefaultI2cAddress);
+I2cDevice i2cDevice = I2cDevice.Create(i2cSettings);
+
+using Bme680 bme680 = new Bme680(i2cDevice, Temperature.FromDegreesCelsius(20.0));
+
+while (true)
+{
+    // reset will change settings back to default
+    bme680.Reset();
+
+    // 10 consecutive measurement with default settings
+    for (var i = 0; i < 10; i++)
+    {
+        // Perform a synchronous measurement
+        var readResult = bme680.Read();
+
+        // Print out the measured data
+        Console.WriteLine($"Gas resistance: {readResult.GasResistance?.Ohms:0.##}Ohm");
+        Console.WriteLine($"Temperature: {readResult.Temperature?.DegreesCelsius:0.#}\u00B0C");
+        Console.WriteLine($"Pressure: {readResult.Pressure?.Hectopascals:0.##}hPa");
+        Console.WriteLine($"Relative humidity: {readResult.Humidity?.Percent:0.#}%");
+
+        if (readResult.Temperature.HasValue && readResult.Pressure.HasValue)
+        {
+            var altValue = WeatherHelper.CalculateAltitude(readResult.Pressure.Value, defaultSeaLevelPressure, readResult.Temperature.Value);
+            Console.WriteLine($"Altitude: {altValue.Meters:0.##}m");
+        }
+
+        if (readResult.Temperature.HasValue && readResult.Humidity.HasValue)
+        {
+            // WeatherHelper supports more calculations, such as saturated vapor pressure, actual vapor pressure and absolute humidity.
+            Console.WriteLine($"Heat index: {WeatherHelper.CalculateHeatIndex(readResult.Temperature.Value, readResult.Humidity.Value).DegreesCelsius:0.#}\u00B0C");
+            Console.WriteLine($"Dew point: {WeatherHelper.CalculateDewPoint(readResult.Temperature.Value, readResult.Humidity.Value).DegreesCelsius:0.#}\u00B0C");
+        }
+
+        // when measuring the gas resistance on each cycle it is important to wait a certain interval
+        // because a heating plate is activated which will heat up the sensor without sleep, this can
+        // falsify all readings coming from the sensor
+        Thread.Sleep(1000);
+    }
+
+    // change the settings
+    bme680.TemperatureSampling = Sampling.HighResolution;
+    bme680.HumiditySampling = Sampling.UltraHighResolution;
+    bme680.PressureSampling = Sampling.Skipped;
+
+    bme680.ConfigureHeatingProfile(Bme680HeaterProfile.Profile2, Temperature.FromDegreesCelsius(280), Duration.FromMilliseconds(80), Temperature.FromDegreesCelsius(24));
+    bme680.HeaterProfile = Bme680HeaterProfile.Profile2;
+
+    // 10 consecutive measurements with custom settings
+    for (int i = 0; i < 10; i++)
+    {
+        // Perform an asynchronous measurement
+        var readResult = await bme680.ReadAsync();
+
+        // Print out the measured data
+        Console.WriteLine($"Gas resistance: {readResult.GasResistance?.Ohms:0.##}Ohm");
+        Console.WriteLine($"Temperature: {readResult.Temperature?.DegreesCelsius:0.#}\u00B0C");
+        Console.WriteLine($"Pressure: {readResult.Pressure?.Hectopascals:0.##}hPa");
+        Console.WriteLine($"Relative humidity: {readResult.Humidity?.Percent:0.#}%");
+
+        if (readResult.Temperature.HasValue && readResult.Pressure.HasValue)
+        {
+            var altValue = WeatherHelper.CalculateAltitude(readResult.Pressure.Value, defaultSeaLevelPressure, readResult.Temperature.Value);
+            Console.WriteLine($"Altitude: {altValue.Meters:0.##}m");
+        }
+
+        if (readResult.Temperature.HasValue && readResult.Humidity.HasValue)
+        {
+            // WeatherHelper supports more calculations, such as saturated vapor pressure, actual vapor pressure and absolute humidity.
+            Console.WriteLine($"Heat index: {WeatherHelper.CalculateHeatIndex(readResult.Temperature.Value, readResult.Humidity.Value).DegreesCelsius:0.#}\u00B0C");
+            Console.WriteLine($"Dew point: {WeatherHelper.CalculateDewPoint(readResult.Temperature.Value, readResult.Humidity.Value).DegreesCelsius:0.#}\u00B0C");
+        }
+
+        Thread.Sleep(1000);
+    }
+}

src/devices/Bmxx80/samples/Bme680.sample.csproj → src/devices/Bmxx80/samples/Bme680/Bme680.sample.csproj

@@ -4,14 +4,10 @@
     <TargetFramework>$(DefaultSampleTfms)</TargetFramework>
     <EnableDefaultItems>false</EnableDefaultItems>
   </PropertyGroup>
-  <ItemGroup>
-    <None Remove="rpi-bmp280_i2c.fzz" />
-    <None Remove="rpi-bmp280_i2c.png" />
-  </ItemGroup>
   <ItemGroup>
     <Compile Include="Bme680.sample.cs" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\Bmxx80.csproj" />
+    <ProjectReference Include="../../Bmxx80.csproj" />
   </ItemGroup>
 </Project>
\ No newline at end of file

src/devices/Bmxx80/samples/Bmp280.sample.csproj → src/devices/Bmxx80/samples/Bmp280/Bmp280.sample.csproj

@@ -4,14 +4,10 @@
     <TargetFramework>$(DefaultSampleTfms)</TargetFramework>
     <EnableDefaultItems>false</EnableDefaultItems>
   </PropertyGroup>
-  <ItemGroup>
-    <None Remove="rpi-bmp280_i2c.fzz" />
-    <None Remove="rpi-bmp280_i2c.png" />
-  </ItemGroup>
   <ItemGroup>
     <Compile Include="Bmp280.sample.cs" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\Bmxx80.csproj" />
+    <ProjectReference Include="../../Bmxx80.csproj" />
   </ItemGroup>
 </Project>
\ No newline at end of file

src/devices/LiquidLevel/LiquidLevel.sln

@@ -10,9 +10,9 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{499A
 		samples\README.md = samples\README.md
 	EndProjectSection
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Llc200d3sh.Sample", "samples\Llc200d3sh.Sample.csproj", "{6A38157B-7F9E-4003-A346-D898C86AE8FA}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Llc200d3sh.Sample", "samples\Llc200d3sh\Llc200d3sh.Sample.csproj", "{6A38157B-7F9E-4003-A346-D898C86AE8FA}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LiquidLevelSwitch.Sample", "samples\LiquidLevelSwitch.Sample.csproj", "{2675D556-74B1-40DA-B1F8-4CE2733463CF}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LiquidLevelSwitch.Sample", "samples\LiquidLevelSwitch\LiquidLevelSwitch.Sample.csproj", "{2675D556-74B1-40DA-B1F8-4CE2733463CF}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

src/devices/LiquidLevel/samples/LiquidLevelSwitch.Sample.csproj → src/devices/LiquidLevel/samples/LiquidLevelSwitch/LiquidLevelSwitch.Sample.csproj

@@ -4,14 +4,10 @@
     <TargetFramework>$(DefaultSampleTfms)</TargetFramework>
     <EnableDefaultItems>false</EnableDefaultItems>
   </PropertyGroup>
-  <ItemGroup>
-    <None Remove="rpi-llc200d3sh.fzz" />
-    <None Remove="rpi-llc200d3sh_bb.png" />
-  </ItemGroup>
   <ItemGroup>
     <Compile Include="LiquidLevelSwitch.sample.cs" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\LiquidLevel.csproj" />
+    <ProjectReference Include="../../LiquidLevel.csproj" />
   </ItemGroup>
 </Project>
\ No newline at end of file

src/devices/LiquidLevel/samples/Llc200d3sh.Sample.csproj → src/devices/LiquidLevel/samples/Llc200d3sh/Llc200d3sh.Sample.csproj

@@ -4,14 +4,10 @@
     <TargetFramework>$(DefaultSampleTfms)</TargetFramework>
     <EnableDefaultItems>false</EnableDefaultItems>
   </PropertyGroup>
-  <ItemGroup>
-    <None Remove="rpi-llc200d3sh.fzz" />
-    <None Remove="rpi-llc200d3sh_bb.png" />
-  </ItemGroup>
   <ItemGroup>
     <Compile Include="Llc200d3sh.sample.cs" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\LiquidLevel.csproj" />
+    <ProjectReference Include="../../LiquidLevel.csproj" />
   </ItemGroup>
 </Project>
\ No newline at end of file

src/devices/Nmea0183/NmeaUdpServer.cs

@@ -255,14 +255,22 @@ namespace Iot.Device.Nmea0183
                     }
 
                     // Check whether the given address is ours (new IPs can be added at runtime, if interfaces go up)
-                    var host = Dns.GetHostEntry(Dns.GetHostName());
-                    if (host.AddressList.Contains(pt.Address))
+                    try
                     {
-                        _knownSenders.Add(pt.Address, true);
+                        var host = Dns.GetHostEntry(Dns.GetHostName());
+                        if (host.AddressList.Contains(pt.Address))
+                        {
+                            _knownSenders.Add(pt.Address, true);
+                        }
+                        else
+                        {
+                            _knownSenders.Add(pt.Address, false);
+                        }
                     }
-                    else
+                    catch (SocketException x)
                     {
-                        _knownSenders.Add(pt.Address, false);
+                        // Dns.GetHostEntry() sometimes throws a SocketException, but only on MacOS.
+                        _parent.FireOnParserError($"Unable to get DNS entry for Host, possibly disconnected?. Error: {x.Message}", NmeaError.None);
                     }
                 }
 

src/devices/Seesaw/Seesaw.sln

@@ -5,15 +5,15 @@ VisualStudioVersion = 17.2.32505.173
 MinimumVisualStudioVersion = 15.0.26124.0
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{A15390DB-F07B-4014-9840-5F792089E026}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Seesaw.Sample.BlinkingLights", "samples\Seesaw.Sample.BlinkingLights.csproj", "{413D2811-7A97-44AC-9D82-099209920BBE}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Seesaw.Sample.BlinkingLights", "samples\BlinkingLights\Seesaw.Sample.BlinkingLights.csproj", "{413D2811-7A97-44AC-9D82-099209920BBE}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Seesaw.Sample.Capabilities", "samples\Seesaw.Sample.Capabilities.csproj", "{5807BB95-184F-47CC-A8A4-63519079B525}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Seesaw.Sample.Capabilities", "samples\Capabilities\Seesaw.Sample.Capabilities.csproj", "{5807BB95-184F-47CC-A8A4-63519079B525}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Seesaw.Sample.SoilSensor", "samples\Seesaw.Sample.SoilSensor.csproj", "{164336C0-7E90-4082-B98D-0AEBB60717E3}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Seesaw.Sample.SoilSensor", "samples\SoilSensor\Seesaw.Sample.SoilSensor.csproj", "{164336C0-7E90-4082-B98D-0AEBB60717E3}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Seesaw", "Seesaw.csproj", "{F87E6203-1DA1-4648-9A1C-AB39C0CDE7E7}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Seesaw.Sample.Encoder", "samples\Seesaw.Sample.Encoder.csproj", "{2AF6BC30-E051-45A3-AA35-9CBB7E6352BA}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Seesaw.Sample.Encoder", "samples\Encoder\Seesaw.Sample.Encoder.csproj", "{2AF6BC30-E051-45A3-AA35-9CBB7E6352BA}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

src/devices/Seesaw/samples/Seesaw.Sample.BlinkingLights.csproj → src/devices/Seesaw/samples/BlinkingLights/Seesaw.Sample.BlinkingLights.csproj

@@ -5,9 +5,9 @@
     <EnableDefaultItems>false</EnableDefaultItems>
   </PropertyGroup>
   <ItemGroup>
-    <ProjectReference Include="../Seesaw.csproj" />
+    <ProjectReference Include="../../Seesaw.csproj" />
     <Compile Include="Seesaw.Sample.BlinkingLights.cs" />
-    <Compile Include="../../../../samples/led-more-blinking-lights/TimeEnvelope.cs" />
+    <Compile Include="../../../../../samples/led-more-blinking-lights/TimeEnvelope.cs" />
     <Compile Include="Volume.cs" />
   </ItemGroup>
 </Project>
\ No newline at end of file

src/devices/Seesaw/samples/Seesaw.Sample.Capabilities.csproj → src/devices/Seesaw/samples/Capabilities/Seesaw.Sample.Capabilities.csproj

@@ -5,7 +5,7 @@
     <EnableDefaultItems>false</EnableDefaultItems>
   </PropertyGroup>
   <ItemGroup>
-    <ProjectReference Include="../Seesaw.csproj" />
+    <ProjectReference Include="../../Seesaw.csproj" />
     <Compile Include="Seesaw.Sample.Capabilities.cs" />
   </ItemGroup>
   <ItemGroup>

src/devices/Seesaw/samples/Seesaw.Sample.Encoder.csproj → src/devices/Seesaw/samples/Encoder/Seesaw.Sample.Encoder.csproj

@@ -8,6 +8,6 @@
     <Compile Include="Seesaw.Sample.Encoder.cs" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\Seesaw.csproj" />
+    <ProjectReference Include="../../Seesaw.csproj" />
   </ItemGroup>
 </Project>

src/devices/Seesaw/samples/Seesaw.Sample.SoilSensor.csproj → src/devices/Seesaw/samples/SoilSensor/Seesaw.Sample.SoilSensor.csproj

@@ -5,7 +5,7 @@
     <EnableDefaultItems>false</EnableDefaultItems>
   </PropertyGroup>
   <ItemGroup>
-    <ProjectReference Include="../Seesaw.csproj" />
+    <ProjectReference Include="../../Seesaw.csproj" />
     <Compile Include="Seesaw.Sample.SoilSensor.cs" />
   </ItemGroup>
 </Project>
\ No newline at end of file

tools/ArduinoCsCompiler/ArduinoCsCompiler.sln

@@ -31,7 +31,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{B096
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "WeatherStation", "samples\WeatherStation\WeatherStation.csproj", "{599172D6-F472-4D53-BA77-044C0A32A2B3}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Arduino.sample", "..\..\src\devices\Arduino\samples\Arduino.sample.csproj", "{C6C5ABC7-8A2C-4127-92A4-6D2471AEB3AA}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Arduino.sample", "..\..\src\devices\Arduino\samples\ApiChecker\Arduino.sample.csproj", "{C6C5ABC7-8A2C-4127-92A4-6D2471AEB3AA}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Mcp3xxx", "..\..\src\devices\Mcp3xxx\Mcp3xxx.csproj", "{A9978931-850E-4E46-9029-1BD82DE4FD6E}"
 EndProject

tools/ArduinoCsCompiler/Frontend/Frontend.csproj

@@ -22,7 +22,7 @@
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\..\src\devices\Arduino\Arduino.csproj" />
-    <ProjectReference Include="..\..\..\src\devices\Arduino\samples\Arduino.sample.csproj" />
+    <ProjectReference Include="..\..\..\src\devices\Arduino\samples\ApiChecker\Arduino.sample.csproj" />
     <ProjectReference Include="..\ArduinoCsCompiler.csproj" />
   </ItemGroup>
 </Project>