Connectum API Reference / @connectum/core / defaultPropagateHeaders

Variable: defaultPropagateHeaders

const defaultPropagateHeaders: readonly string[]

Defined in: packages/core/src/propagateHeaders.ts:30

Recommended default allow-list: W3C trace-context headers only.

Trace headers let a downstream call continue the inbound trace even without an OpenTelemetry SDK. When the @connectum/otel client interceptor is also mounted in outgoingInterceptors, it overwrites traceparent with the active span's context (so the OTel value wins — no conflicting double value).

authorization is intentionally excluded: forwarding credentials is a deliberate, security-sensitive choice the caller must opt into explicitly.