[bug] No Export since v1.11 on net9-android

[stratdev3]

Package

OpenTelemetry

Package Version

Package Name	Version
OpenTelemetry.Exporter.OpenTelemetryProtocol	1.11.0

Runtime Version

net9-android

Description

Hi,

I have a regression with the OpenTelemetry.Exporter.OpenTelemetryProtocol version >= 1.11.0 which occur on the net9-android runtime. The previous version v1.10.0 is working.

Data are no longer exported to the destination.

Steps to Reproduce

MeterProvider meterProvider = 
                 Sdk.CreateMeterProviderBuilder()
                    .AddMeter("*")
                    .SetResourceBuilder(
                        ResourceBuilder
                              .CreateEmpty()
                              .AddService("screenshootservice", "0.1")
                    )
                    .AddOtlpExporter((exporterOptions, metricReaderOptions) => {
                        exporterOptions.Endpoint = new Uri("http://localhost:4317");
                        metricReaderOptions.TemporalityPreference = MetricReaderTemporalityPreference.Delta;
                        metricReaderOptions.PeriodicExportingMetricReaderOptions.ExportIntervalMilliseconds = 10_000;
                    })
                    .AddConsoleExporter((consoleExporterOptions, metricReaderOptions) => {
                        metricReaderOptions.PeriodicExportingMetricReaderOptions.ExportIntervalMilliseconds = 10_000;
                    })
                    .Build();

Meter meter = new("screenshootservice", "0.1);

List<KeyValuePair<string, object>> tags = new() {
    new KeyValuePair<string, object>("host", "example"),
};
ObservableGauge<int> counterFps = meter.CreateObservableGauge("screenshootservice.fps",
                                                              () => new Measurement<int>(30, tags),
                                                              "fps",
                                                              "screenshootservice fps");

Expected Result

The metrics should be exporter to the endpoint (a local instance of the opentelemetry-collector-contrib in debug verbose mode)

Actual Result

The metrics are not exported to the endpoint (a local instance of the opentelemetry-collector-contrib in debug verbose mode)

Additional Context

I add AddConsoleExporter() so i confirm the metrics are displayed in the console.
They are just not exported to endpoint.

• When i use net9, metrics are exported to endpoint.
• When i use the v1.10, metrics are exported to endpoint.

The issue seems to be related with v1.11 and net9-android.

Thanks

[TimothyMothra]

Can you please collect the self diagnostic logs and share? That would help us understand if an error is happening at runtime.
https://github.com/open-telemetry/opentelemetry-dotnet/blob/main/src/OpenTelemetry/README.md#self-diagnostics