From f865a6c3d46f9f62b334313dc3ebcda847a022ac Mon Sep 17 00:00:00 2001
From: NiaoGe <tensorchen@gmail.com>
Date: Thu, 30 Apr 2020 23:55:16 +0800
Subject: [PATCH] Fix Traceparent to traceparent (#681)

* Fix Traceparent to traceparent

* Fix unittest Traceparent to traceparent
---
 api/trace/testtrace/trace_context_propagator_test.go | 2 +-
 api/trace/trace_context_propagator.go                | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/api/trace/testtrace/trace_context_propagator_test.go b/api/trace/testtrace/trace_context_propagator_test.go
index d7096e39f..2487dcaec 100644
--- a/api/trace/testtrace/trace_context_propagator_test.go
+++ b/api/trace/testtrace/trace_context_propagator_test.go
@@ -288,7 +288,7 @@ func TestInjectTraceContextToHTTPReq(t *testing.T) {
 
 func TestTraceContextPropagator_GetAllKeys(t *testing.T) {
 	var propagator trace.TraceContext
-	want := []string{"Traceparent"}
+	want := []string{"traceparent"}
 	got := propagator.GetAllKeys()
 	if diff := cmp.Diff(got, want); diff != "" {
 		t.Errorf("GetAllKeys: -got +want %s", diff)
diff --git a/api/trace/trace_context_propagator.go b/api/trace/trace_context_propagator.go
index 2a464d3e0..ab54ffbf0 100644
--- a/api/trace/trace_context_propagator.go
+++ b/api/trace/trace_context_propagator.go
@@ -28,7 +28,7 @@ import (
 const (
 	supportedVersion  = 0
 	maxVersion        = 254
-	traceparentHeader = "Traceparent"
+	traceparentHeader = "traceparent"
 )
 
 // TraceContext propagates SpanContext in W3C TraceContext format.