Tracing not working when B3Propagator is in Propagators

[McMlok]

Hello,

I want to in my application to consume Zipkin B3 headers and propagate traceId from B3 header to Activity. I added OpenTelemetry.Extensions.Propagators.B3Propagator to Propagators and it works until I realized that tracing information is not exported to Zipkin.

My setup is

Sdk.SetDefaultTextMapPropagator(new CompositeTextMapPropagator(new TextMapPropagator[]
        {
            //new TracingPropagator(tracingOptions.Value.ExtractTracingPropagator, tracingOptions.Value.InjectTracingPropagator),
            new TraceContextPropagator(),
            new B3Propagator(),
            new BaggagePropagator(),
        }));

services.AddOpenTelemetryTracing(builder =>
{
    builder
        .SetResourceBuilder(ResourceBuilder.CreateEmpty().AddService("HeaderPropagationTest"))
        .AddConsoleExporter()
        .AddAspNetCoreInstrumentation();
});

When I call my service with

curl --location --request GET 'https://localhost:1090/home'

I see activity tracing in Console. But when I call endpoint with

curl --location --request GET 'https://localhost:1090/home'
--header 'X-B3-TraceId: 11f7651916cd43dd8448eb211c80319c'
--header 'X-B3-SpanId: 1dac5b3fa2ea2e33'

no activity tracing is in console.

I'm using .NET 6.0 and 7.0 with

<PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.3.1" />
<PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.0.0-rc9.9" />
<PackageReference Include="OpenTelemetry.Extensions.Propagators" Version="1.3.1" />
<PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.0.0-rc9.9" />
<PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />

Does any body know what I'm doing wrong?

[McMlok]

OK, I have it. I have forgot to add X-B3-Sampled or X-B3-Flags header with value 1 and the activity was not marked as Recorded. No it works.