diff --git a/context.go b/context.go
index 4bbd41d3..bbf1fc03 100644
--- a/context.go
+++ b/context.go
@@ -39,6 +39,8 @@ const (
 
 const abortIndex int8 = math.MaxInt8 / 2
 
+const httpStatusClientClosedRequest = 499
+
 // Context is the most important part of gin. It allows us to pass variables between middleware,
 // manage the flow, validate the JSON of a request and render a JSON response for example.
 type Context struct {