Adds connection stash middleware

middleware/http/clientip.go

@@ -7,12 +7,6 @@ import (
 	"strings"
 )
 
-type ContextKey uint
-
-const (
-	ClientIP ContextKey = iota
-)
-
 type Provider uint8
 
 const (

middleware/http/context.go

@@ -0,0 +1,9 @@
+package http
+
+type ContextKey uint
+
+const (
+	NoKey ContextKey = iota
+	ClientIP
+	Stash
+)

middleware/http/stash.go

@@ -0,0 +1,19 @@
+package http
+
+import (
+	"context"
+	"net/http"
+	"sync"
+)
+
+func NewStashMiddleware() func(next http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			ctx := r.Context()
+			ctx = context.WithValue(ctx, Stash, &sync.Map{})
+			r = r.WithContext(ctx)
+
+			next.ServeHTTP(w, r)
+		})
+	}
+}