pub fn build_b3_headers(span: &SpanContext) -> Vec<(String, String)>Expand description
Builds the B3 multi-headers for a span as (name, value) pairs to set on
the outgoing request.
pub fn build_b3_headers(span: &SpanContext) -> Vec<(String, String)>Builds the B3 multi-headers for a span as (name, value) pairs to set on
the outgoing request.