diff --git a/nbhttp/engine.go b/nbhttp/engine.go
index 2804e5a1..eacbc38d 100644
--- a/nbhttp/engine.go
+++ b/nbhttp/engine.go
@@ -196,9 +196,11 @@ type Config struct {
 	// ReadBufferPool .
 	ReadBufferPool mempool.Allocator
 
+	// Deprecated.
 	// WebsocketCompressor .
 	WebsocketCompressor func(w io.WriteCloser, level int) io.WriteCloser
 
+	// Deprecated.
 	// WebsocketDecompressor .
 	WebsocketDecompressor func(r io.Reader) io.ReadCloser
 
diff --git a/nbhttp/websocket/conn.go b/nbhttp/websocket/conn.go
index 3021839b..3f04d8cd 100644
--- a/nbhttp/websocket/conn.go
+++ b/nbhttp/websocket/conn.go
@@ -425,8 +425,8 @@ func (c *Conn) Parse(data []byte) error {
 						if c.compress {
 							var b []byte
 							var rc io.ReadCloser
-							if c.Engine.WebsocketDecompressor != nil {
-								rc = c.Engine.WebsocketDecompressor(io.MultiReader(bytes.NewBuffer(message), strings.NewReader(flateReaderTail)))
+							if c.WebsocketDecompressor != nil {
+								rc = c.WebsocketDecompressor(c, io.MultiReader(bytes.NewBuffer(message), strings.NewReader(flateReaderTail)))
 							} else {
 								rc = decompressReader(io.MultiReader(bytes.NewBuffer(message), strings.NewReader(flateReaderTail)))
 							}
@@ -562,8 +562,8 @@ func (c *Conn) WriteMessage(messageType MessageType, data []byte) error {
 		w.Reset()
 
 		var cw io.WriteCloser
-		if c.Engine.WebsocketCompressor != nil {
-			cw = c.Engine.WebsocketCompressor(w, c.compressionLevel)
+		if c.WebsocketCompressor != nil {
+			cw = c.WebsocketCompressor(c, w, c.compressionLevel)
 		} else {
 			cw = compressWriter(w, c.compressionLevel)
 		}
diff --git a/nbhttp/websocket/upgrader.go b/nbhttp/websocket/upgrader.go
index 456c214a..b991d6c9 100644
--- a/nbhttp/websocket/upgrader.go
+++ b/nbhttp/websocket/upgrader.go
@@ -58,6 +58,9 @@ type commonFields struct {
 	MessageLengthLimit         int
 	BlockingModAsyncCloseDelay time.Duration
 
+	WebsocketCompressor   func(c *Conn, w io.WriteCloser, level int) io.WriteCloser
+	WebsocketDecompressor func(c *Conn, r io.Reader) io.ReadCloser
+
 	pingMessageHandler  func(c *Conn, appData string)
 	pongMessageHandler  func(c *Conn, appData string)
 	closeMessageHandler func(c *Conn, code int, text string)