diff --git a/public/codec.go b/public/codec.go
deleted file mode 100644
index e88b9829c577dca11a7a3ffdc2e4d97536d45035..0000000000000000000000000000000000000000
--- a/public/codec.go
+++ /dev/null
@@ -1,44 +0,0 @@
-package public
-
-//////////////////////////////////////////
-// codec type
-//////////////////////////////////////////
-
-type CodecType int
-
-const (
-	CODECTYPE_UNKNOWN CodecType = iota
-	CODECTYPE_JSONRPC
-	CODECTYPE_DUBBO
-)
-
-var codecTypeStrings = [...]string{
-	"unknown",
-	"jsonrpc",
-	"dubbo",
-}
-
-func (c CodecType) String() string {
-	typ := CODECTYPE_UNKNOWN
-	switch c {
-	case CODECTYPE_JSONRPC:
-		typ = c
-	case CODECTYPE_DUBBO:
-		typ = c
-	}
-
-	return codecTypeStrings[typ]
-}
-
-func GetCodecType(t string) CodecType {
-	var typ = CODECTYPE_UNKNOWN
-
-	switch t {
-	case codecTypeStrings[CODECTYPE_JSONRPC]:
-		typ = CODECTYPE_JSONRPC
-	case codecTypeStrings[CODECTYPE_DUBBO]:
-		typ = CODECTYPE_DUBBO
-	}
-
-	return typ
-}
diff --git a/public/const.go b/public/const.go
deleted file mode 100644
index d7f385ecf4530ebc2174c7162a44a88e65106319..0000000000000000000000000000000000000000
--- a/public/const.go
+++ /dev/null
@@ -1,5 +0,0 @@
-package public
-
-const (
-	DUBBOGO_CTX_KEY = "dubbogo-ctx"
-)