Add project files.

GrpcService1/GrpcService1.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Protobuf Include="Protos\greet.proto" GrpcServices="Server" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Grpc.AspNetCore" Version="2.76.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\AspireApp1\AspireApp1.ServiceDefaults\AspireApp1.ServiceDefaults.csproj" />
+  </ItemGroup>
+
+</Project>

GrpcService1/Program.cs

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+using GrpcService1.Services;
+
+var builder = WebApplication.CreateBuilder(args);
+
+builder.AddServiceDefaults();
+
+// Add services to the container.
+builder.Services.AddGrpc();
+
+var app = builder.Build();
+
+app.MapDefaultEndpoints();
+
+// Configure the HTTP request pipeline.
+app.MapGrpcService<GreeterService>();
+app.MapGet("/", () => "Communication with gRPC endpoints must be made through a gRPC client. To learn how to create a client, visit: https://go.microsoft.com/fwlink/?linkid=2086909");
+
+app.Run();

GrpcService1/Properties/launchSettings.json

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+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": false,
+      "applicationUrl": "http://localhost:5133",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": false,
+      "applicationUrl": "https://localhost:7259;http://localhost:5133",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

GrpcService1/Protos/greet.proto

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+syntax = "proto3";
+
+option csharp_namespace = "GrpcService1";
+
+package greet;
+
+// The greeting service definition.
+service Greeter {
+  // Sends a greeting
+  rpc SayHello (HelloRequest) returns (HelloReply);
+}
+
+// The request message containing the user's name.
+message HelloRequest {
+  string name = 1;
+}
+
+// The response message containing the greetings.
+message HelloReply {
+  string message = 1;
+}

GrpcService1/Services/GreeterService.cs

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+using Grpc.Core;
+
+namespace GrpcService1.Services;
+
+public class GreeterService(ILogger<GreeterService> logger) : Greeter.GreeterBase
+{
+    public override Task<HelloReply> SayHello(HelloRequest request, ServerCallContext context)
+    {
+        logger.LogInformation("The message is received from {Name}", request.Name);
+
+        return Task.FromResult(new HelloReply
+        {
+            Message = "Hello " + request.Name
+        });
+    }
+}

GrpcService1/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

GrpcService1/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*",
+  "Kestrel": {
+    "EndpointDefaults": {
+      "Protocols": "Http2"
+    }
+  }
+}