Program.cs

usingGrpc.Core;
usingMicrosoft.AspNetCore.Server.Kestrel.Core;

varbuilder=WebApplication.CreateBuilder();
builder.Services.AddGrpc();
builder.WebHost.ConfigureKestrel(k =>
{
k.ConfigureEndpointDefaults(options =>options.Protocols=HttpProtocols.Http2);
k.ListenLocalhost(5500, o =>o.UseHttps());
});

varapp=builder.Build();
app.MapGrpcService<BillboardService>();
app.MapGet("/",()=>"This server contains a gRPC service");

app.Run();

publicclassBillboardService:Billboard.Board.BoardBase
{
publicoverrideTask<Billboard.MessageReply>ShowMessage(Billboard.MessageRequestrequest,ServerCallContextcontext)
{
varmessage=$"Your {request.Type} with the following content `{request.Message}` has arrived well.";
varnow=DateTime.UtcNow;
returnTask.FromResult(newBillboard.MessageReply
{
ReceivedTime=now.Ticks,
Message=message
});
}
}