Constant opentelemetry_otlp::OTEL_EXPORTER_OTLP_HEADERS

pub const OTEL_EXPORTER_OTLP_HEADERS: &str = "OTEL_EXPORTER_OTLP_HEADERS";

Key-value pairs to be used as headers associated with gRPC or HTTP requests Example: k1=v1,k2=v2 Note: as of now, this is only supported for HTTP requests.