feat(middleware-logging): implement http.Hijacker

http.Hijacker is mandatory to forward websocket connexions

interceptor/middleware/loggingresponsewriter.go

@@ -1,6 +1,9 @@
 package middleware
 
 import (
+	"bufio"
+	"errors"
+	"net"
 	"net/http"
 )
 
@@ -46,3 +49,12 @@ func (lrw *loggingResponseWriter) WriteHeader(statusCode int) {
 
 	lrw.statusCode = statusCode
 }
+
+// implements http.hijacker
+func (lrw *loggingResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	if hj, ok := lrw.downstreamResponseWriter.(http.Hijacker); ok {
+		return hj.Hijack()
+	}
+
+	return nil, nil, errors.New("http.Hijacker not implemented")
+}