Module propagation 

Available on crate feature transport only.

Trace Context Propagation

W3C Trace Context (traceparent) helpers for automatic context propagation across transport boundaries. When the otel feature is enabled, transports inject/extract traceparent headers transparently.

Format: 00-{trace_id}-{span_id}-{flags} Example: 00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01

Constants

TRACEPARENT_HEADER

W3C traceparent header name.

Functions

current_traceparenttransport-trace

Format a W3C traceparent header value from the current OTel span context.

format_traceparent_raw

Format a traceparent string from raw components (for testing without OTel).

is_valid_traceparent

Validate that a string looks like a well-formed traceparent header.