Added files to investigate client memory usage

.gitignore

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+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.sln.docstates
+.vs/
+.idea/
+.vscode/
+
+# Fake
+.fake/
+
+# Open DB
+*.opendb
+
+# Intellisense DB
+*.VC.db
+
+# Web API config
+.vs/config/applicationhost.config
+
+# Build results
+
+[Dd]ebug/
+[Rr]elease/
+x64/
+build/
+[Bb]in/
+/slices/
+!/[Bb]in/
+!/[Bb]in/northfield/x64
+!/deploy/[Bb]in/
+[Oo]bj/
+
+# Ignore script files in test project
+tests/Test.ProView.Math/Scripts
+
+# Enable "build/" folder in the NuGet Packages folder since NuGet packages use it for MSBuild targets
+!packages/*/build/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+*.bak
+*_i.c
+*_p.c
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.scc
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+*.cachefile
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# NCrunch
+*.ncrunch*
+.*crunch*.local.xml
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.Publish.xml
+
+# NuGet Packages Directory
+## TODO: If you have NuGet Package Restore enabled, uncomment the next line
+#packages/
+
+# Windows Azure Build Output
+csx
+*.build.csdef
+
+# Windows Store app package directory
+AppPackages/
+
+# Others
+sql/
+*.Cache
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.[Pp]ublish.xml
+*.pfx
+*.publishsettings
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file to a newer
+# Visual Studio version. Backup files are not needed, because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+App_Data/*.mdf
+App_Data/*.ldf
+
+
+#LightSwitch generated files
+GeneratedArtifacts/
+_Pvt_Extensions/
+ModelManifest.xml
+
+# =========================
+# Windows detritus
+# =========================
+
+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Mac desktop service store files
+.DS_Store
+
+nugetTemp/
+packages/
+results/
+/docs/
+
+/TestResult.xml
+
+# Build artefacts
+# <!> There is an issue with the build command. It outputs the same artefacts in two locatins. This one is incomplete.
+buildoutput/
+**/buildbin/
+*.metaproj
+/packaged/
+/.idea/.idea.InCube.CIO/.idea/contentModel.xml
+/.idea/.idea.InCube.CIO/.idea/workspace.xml
+/test-results/
+

Client/Client.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Protobuf Include="..\Proto\greet.proto" GrpcServices="Client" Link="Protos\greet.proto" />
+
+    <PackageReference Include="Google.Protobuf" Version="3.15.8" />
+    <PackageReference Include="Grpc.Net.Client" Version="2.36.0" />
+    <PackageReference Include="Grpc.Tools" Version="2.36.0" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="5.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="5.0.0" />
+  </ItemGroup>
+</Project>

Client/Program.cs

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+#region Copyright notice and license
+
+// Copyright 2019 The gRPC Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#endregion
+
+using System;
+using System.Threading.Tasks;
+using Greet;
+using Grpc.Net.Client;
+using Microsoft.Extensions.Logging;
+
+namespace Client
+{
+    public class Program
+    {
+        static async Task Main(string[] args)
+        {
+            await RunThingsInScope();
+
+            GC.Collect(1000, GCCollectionMode.Forced, blocking:true);
+            Console.WriteLine($"-------------------------------------------------------------------");
+            WriteMemorySummary();
+
+            Console.WriteLine("");
+            Console.WriteLine("Press any key to exit...");
+            Console.ReadKey();
+        }
+
+        private static async Task RunThingsInScope()
+        {
+            for (int i = 0; i < 5; i++)
+            {
+                using var channel = GrpcChannel.ForAddress(
+                    "https://localhost:5001",
+                    new GrpcChannelOptions()
+                    {
+                        MaxReceiveMessageSize = null,
+                        LoggerFactory = GetConsoleLoggerFactory,
+                    });
+                var client = new Greeter.GreeterClient(channel);
+                Console.WriteLine($"Requesting some numbers (Request #{i})..");
+                WriteMemorySummary();
+
+                {
+                    var reply = await client.GetNumbersAsync(new NumberRequest());
+                    var size = reply.CalculateSize();
+                    Console.WriteLine($"Got response with {reply.Points.Count} data points. Roughly {size / 1e6} MB");
+                    WriteMemorySummary();
+                }
+
+                Console.WriteLine($"Calling GC.Collect()");
+                GC.Collect();
+                WriteMemorySummary();
+                Console.WriteLine("");
+            }
+        }
+
+        private static void WriteMemorySummary()
+        {
+            var memoryInfo = GC.GetGCMemoryInfo();
+            Console.WriteLine($"Current memory footprint: {memoryInfo.TotalCommittedBytes/1e6:F2}MB");
+        }
+
+        private static ILoggerFactory GetConsoleLoggerFactory => LoggerFactory.Create(
+            builder =>
+                builder.AddSimpleConsole(
+                    options =>
+                    {
+                        options.SingleLine = true;
+                        options.TimestampFormat = "hh:mm:ss ";
+                    }));
+    }
+}

Greeter.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29230.61
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Server", "Server\Server.csproj", "{534AC5F8-2DF2-40BD-87A5-B3D8310118C4}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Client", "Client\Client.csproj", "{48A1D3BC-A14B-436A-8822-6DE2BEF8B747}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{534AC5F8-2DF2-40BD-87A5-B3D8310118C4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{534AC5F8-2DF2-40BD-87A5-B3D8310118C4}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{534AC5F8-2DF2-40BD-87A5-B3D8310118C4}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{534AC5F8-2DF2-40BD-87A5-B3D8310118C4}.Release|Any CPU.Build.0 = Release|Any CPU
+		{48A1D3BC-A14B-436A-8822-6DE2BEF8B747}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{48A1D3BC-A14B-436A-8822-6DE2BEF8B747}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{48A1D3BC-A14B-436A-8822-6DE2BEF8B747}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{48A1D3BC-A14B-436A-8822-6DE2BEF8B747}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {D22B3129-3BFB-41FA-9FCE-E45EBEF8C2DD}
+	EndGlobalSection
+EndGlobal

Proto/greet.proto

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+syntax = "proto3";
+
+import "google/protobuf/timestamp.proto";
+
+package greet;
+
+service Greeter {
+  rpc GetNumbers (NumberRequest) returns (NumberReply);
+}
+
+message NumberRequest {
+}
+
+message NumberReply {
+  repeated DoubleDataPoint points = 1;
+}
+
+message DoubleDataPoint {
+	double value = 1;
+	google.protobuf.Timestamp date = 2;
+}

Server/Program.cs

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+#region Copyright notice and license
+
+// Copyright 2019 The gRPC Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#endregion
+
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Hosting;
+
+namespace Server
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            CreateHostBuilder(args).Build().Run();
+        }
+
+        public static IHostBuilder CreateHostBuilder(string[] args) =>
+            Host.CreateDefaultBuilder(args)
+                .ConfigureWebHostDefaults(webBuilder =>
+                {
+                    webBuilder.UseStartup<Startup>();
+                });
+    }
+}