Use latest baggage header (#246)

src/api/baggage/mod.rs

@@ -20,7 +20,7 @@
 //!
 //! // Example baggage value passed in externally via http headers
 //! let mut headers = HashMap::new();
-//! headers.insert("otcorrelations".to_string(), "user_id=1".to_string());
+//! headers.insert("baggage".to_string(), "user_id=1".to_string());
 //!
 //! let propagator = BaggagePropagator::new();
 //! // can extract from any type that impls `Extractor`, usually an HTTP header map
@@ -37,7 +37,7 @@
 //! // Inject aggage into http request
 //! propagator.inject_context(&cx_with_additions, &mut headers);
 //!
-//! let header_value = headers.get("otcorrelations").expect("header is injected");
+//! let header_value = headers.get("baggage").expect("header is injected");
 //! assert!(header_value.contains("user_id=1"), "still contains previous name / value");
 //! assert!(header_value.contains("server_id=42"), "contains new name / value pair");
 //! ```

src/api/baggage/propagation.rs

@@ -4,7 +4,7 @@ use crate::api::{self, Context, KeyValue};
 use percent_encoding::{percent_decode_str, utf8_percent_encode, AsciiSet, CONTROLS};
 use std::iter;
 
-static BAGGAGE_HEADER: &str = "otcorrelations";
+static BAGGAGE_HEADER: &str = "baggage";
 const FRAGMENT: &AsciiSet = &CONTROLS.add(b' ').add(b'"').add(b';').add(b',').add(b'=');
 
 lazy_static::lazy_static! {

src/api/context/propagation/composite_propagator.rs

@@ -42,8 +42,8 @@ use std::fmt::Debug;
 ///                                     .with_baggage(vec![KeyValue::new("test", "example")]),
 ///                                     &mut injector);
 ///
-/// // The injector now has both `otcorrelations` and `traceparent` headers
-/// assert!(injector.get("otcorrelations").is_some());
+/// // The injector now has both `baggage` and `traceparent` headers
+/// assert!(injector.get("baggage").is_some());
 /// assert!(injector.get("traceparent").is_some());
 /// ```
 #[derive(Debug)]