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[Instrumentation.AspNet] Baggage is propagated before the Activity is created #3820

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Merged
Kielek merged 6 commits into from
Jan 28, 2026
Merged

[Instrumentation.AspNet] Baggage is propagated before the Activity is created #3820

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[Instrumentation.AspNet] Baggage is propagated before the Activity is…
Kielek Jan 28, 2026
4d1865e
CHANGELOG
Kielek Jan 28, 2026
352a201
remove unused test code
Kielek Jan 28, 2026
f112b77
Add test
Kielek Jan 28, 2026
27c5ad0
dotnet format
Kielek Jan 28, 2026
642440c
Merge branch 'main' into aspnet-baggage
rajkumar-rangaraj Jan 28, 2026
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3 changes: 1 addition & 2 deletions src/OpenTelemetry.Instrumentation.AspNet.TelemetryHttpModule/ActivityHelper.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,7 @@ public static bool HasStarted(HttpContextBase context, out Activity? aspNetActiv
Activity? activity = null;
try
{
Baggage.Current = propagationContext.Baggage;
activity = onRequestStartedCallback?.Invoke(context, propagationContext.ActivityContext);
}
catch (Exception callbackEx)
Expand All @@ -71,8 +72,6 @@ public static bool HasStarted(HttpContextBase context, out Activity? aspNetActiv
{
if (textMapPropagator is not TraceContextPropagator)
{
Baggage.Current = propagationContext.Baggage;

context.Items[ContextKey] = new ContextHolder(activity, RuntimeContext.GetValue(BaggageSlotName));
}
else
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3 changes: 3 additions & 0 deletions src/OpenTelemetry.Instrumentation.AspNet.TelemetryHttpModule/CHANGELOG.md
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Expand Up @@ -2,6 +2,9 @@

## Unreleased

* Propagate baggage before `Activity` is created.
([#3820](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/3820))

## 1.15.0

Released 2026-Jan-21
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