diff --git a/plugin/business/pangu-http/src/pangu_http.cpp b/plugin/business/pangu-http/src/pangu_http.cpp
index 36a984a..e71e962 100644
--- a/plugin/business/pangu-http/src/pangu_http.cpp
+++ b/plugin/business/pangu-http/src/pangu_http.cpp
@@ -1516,6 +1516,7 @@ static void http_redirect(const struct tfe_http_session * session, enum tfe_http
 	if ((events & EV_HTTP_RESP_BODY_BEGIN) || (events & EV_HTTP_RESP_BODY_CONT)
 		 || (events & EV_HTTP_RESP_BODY_END) || (events & EV_HTTP_RESP_END))
 	{
+		ctx->action = PG_ACTION_NONE;
 		return;
 	}
 
diff --git a/plugin/business/pangu-http/src/pattern_replace.cpp b/plugin/business/pangu-http/src/pattern_replace.cpp
index 34bb084..ea910c5 100644
--- a/plugin/business/pangu-http/src/pattern_replace.cpp
+++ b/plugin/business/pangu-http/src/pattern_replace.cpp
@@ -227,7 +227,7 @@ not_enough_mem_retry:
 	if(rc<=0)
 	{
 		free(out_buffer);
-		outlen=rc;
+		outlen=0;
 	}
 	else
 	{
diff --git a/plugin/protocol/http2/src/http2_stream.cpp b/plugin/protocol/http2/src/http2_stream.cpp
index 797f2f7..907a8e8 100644
--- a/plugin/protocol/http2/src/http2_stream.cpp
+++ b/plugin/protocol/http2/src/http2_stream.cpp
@@ -1261,8 +1261,9 @@ nghttp2_submit_frame_data(struct tfe_h2_stream *h2_stream_info,const nghttp2_fra
 
 	nghttp2_session *ngh2_session = tfe_h2_stream_get_nghttp2_peer_session(h2_stream_info, dir);
 	h2_session = (struct tfe_h2_session *)nghttp2_session_get_stream_user_data(ngh2_session, frame->hd.stream_id);
-	if (!h2_session)
+	if (h2_session == NULL)
 	{
+		nghttp2_submit_end_data_by_h2_half(h2_stream_info, frame->hd.stream_id, dir);
 		h2_stream_info->stream_action = ACTION_DROP_DATA;
 		return 0;
 	}
@@ -1615,6 +1616,8 @@ nghttp2_server_submit_header(struct tfe_h2_stream *h2_stream_info, int32_t strea
 													  stream_id, h2_stream_info);
 		goto finish;
 	}
+	assert(h2_session->ngh2_stream_id == stream_id);
+
 	resp = h2_session->resp;
 	fill_resp_spec_from_handle(h2_session->resp);
 
@@ -1799,6 +1802,8 @@ nghttp2_client_submit_header(struct tfe_h2_stream *h2_stream_info, int32_t strea
 		stream_action = ACTION_FORWARD_DATA;
 		goto finish;
 	}
+	assert(h2_session->ngh2_stream_id == stream_id);
+
 	req = h2_session->req;
 	fill_req_spec_from_handle(h2_session->req);