diff --git a/src/gquic_process.c b/src/gquic_process.c
index 4f0b721..cee031e 100644
--- a/src/gquic_process.c
+++ b/src/gquic_process.c
@@ -515,7 +515,7 @@ enum _QUIC_VERSION is_quic_protocol(struct streaminfo *pstream, struct _quic_con
 
 int parse_extension_tag(struct streaminfo *pstream, struct _quic_stream **quic_stream, void *a_packet, char *payload, int payload_len, int *used_len, int tag_num)
 {
-	int ret=0,tag_used_num=0;
+	int tag_used_num=0;
 	int tag_type,skip_tsg=0;
 	int total_tag_len=0,tag_len=0;
 	int tag_offset_end=0,pre_tag_offset_end=0;
@@ -606,7 +606,7 @@ int parse_extension_tag(struct streaminfo *pstream, struct _quic_stream **quic_s
 	
 	*used_len += total_tag_len;
 	
-	return ret;
+	return 0;
 }
 
 int gquic_frame_type_ack(struct streaminfo *pstream, struct _quic_context* _context, char *payload, int payload_len, int *used_len, char frame_type, void *a_packet)
@@ -662,6 +662,7 @@ int gquic_frame_type_ack(struct streaminfo *pstream, struct _quic_context* _cont
 int gquic_frame_type_stream(struct streaminfo *pstream, struct _quic_context* _context, char *payload, int payload_len, int *used_len, char frame_type, void *a_packet)
 {
 	int ret=0;
+	char state=APP_STATE_GIVEME;
 	unsigned short tag_num = 0;
 	unsigned int stream_id, message_tag;
 
@@ -680,28 +681,28 @@ int gquic_frame_type_stream(struct streaminfo *pstream, struct _quic_context* _c
 			ret=parse_extension_tag(pstream, &(_context->quic_info.client_hello), a_packet, payload, payload_len, used_len, tag_num);
 			if(ret>=0 && _context->call_business)
 			{
-				ret=quic_callPlugins(pstream, _context, (void *)(_context->quic_info.client_hello), sizeof(void *), QUIC_CLIENT_HELLO_MASK, a_packet);
+				state=quic_callPlugins(pstream, _context, (void *)(_context->quic_info.client_hello), sizeof(void *), QUIC_CLIENT_HELLO_MASK, a_packet);
 			}
 			break;
 		case SHLO:  //MTAG_SHLO;
 			ret=parse_extension_tag(pstream, &(_context->quic_info.server_hello), a_packet, payload, payload_len, used_len, tag_num);
 			if(ret>=0 && _context->call_business)
 			{
-				ret=quic_callPlugins(pstream, _context, (void *)(_context->quic_info.server_hello), sizeof(void *), QUIC_SERVER_HELLO_MASK, a_packet);
+				state=quic_callPlugins(pstream, _context, (void *)(_context->quic_info.server_hello), sizeof(void *), QUIC_SERVER_HELLO_MASK, a_packet);
 			}
 			break;
 		case REJ: //MTAG_REJ;
 			ret=parse_extension_tag(pstream, &(_context->quic_info.rejection), a_packet, payload, payload_len, used_len, tag_num);
 			if(ret>=0 && _context->call_business)
 			{
-				ret=quic_callPlugins(pstream, _context, (void *)(_context->quic_info.rejection), sizeof(void *), QUIC_REJECTION_MASK, a_packet);
+				state=quic_callPlugins(pstream, _context, (void *)(_context->quic_info.rejection), sizeof(void *), QUIC_REJECTION_MASK, a_packet);
 			}
 			break;
 		default:
 			break;
 	}
 
-	return ret;
+	return state;
 }
 
 //frame type->stream->offset->data length
@@ -972,7 +973,7 @@ int quic_protocol_identify(struct streaminfo *a_stream, void *a_packet, char *ou
 	_context=(struct _quic_context *)pme;
 	
 	ret=quic_process(a_stream, _context, a_stream->threadnum, a_packet);
-	if(ret!=PROT_STATE_DROPME)
+	if(ret!=PROT_STATE_DROPME && _context->is_quic!=QUIC_VERSION_UNKNOWN)
 	{
 		if(_context->quic_info.client_hello!=NULL)
 		{