diff --git a/plugin/protocol/http2/src/http2_stream.cpp b/plugin/protocol/http2/src/http2_stream.cpp
index 29f8c69..4ff47e6 100644
--- a/plugin/protocol/http2/src/http2_stream.cpp
+++ b/plugin/protocol/http2/src/http2_stream.cpp
@@ -1629,7 +1629,11 @@ nghttp2_server_submit_header(struct tfe_h2_stream *h2_stream_info, int32_t strea
 		stream_action = ACTION_DEFER_DATA;
 		goto finish;
 	}
-	nghttp2_write_log(h2_session,h2_stream_info->tf_stream->str_stream_info, CONN_DIR_UPSTREAM);
+
+	// int googletest,  h2_stream_info->tf_stream is NULL
+	if (h2_session && h2_stream_info && h2_stream_info->tf_stream) {
+		nghttp2_write_log(h2_session, h2_stream_info->tf_stream->str_stream_info, CONN_DIR_UPSTREAM);
+	}
 
 	stream_action = nghttp2_server_frame_submit_header(h2_stream_info, h2_session);
 	if (stream_action == ACTION_DROP_DATA){
@@ -1799,7 +1803,10 @@ nghttp2_client_submit_header(struct tfe_h2_stream *h2_stream_info, int32_t strea
 
 	req->event_cb(req, EV_HTTP_REQ_HDR, NULL, 0, req->event_cb_user);
 
-	nghttp2_write_log(h2_session, h2_stream_info->tf_stream->str_stream_info, CONN_DIR_DOWNSTREAM);
+	// int googletest,  h2_stream_info->tf_stream is NULL
+	if (h2_session && h2_stream_info && h2_stream_info->tf_stream) {
+		nghttp2_write_log(h2_session, h2_stream_info->tf_stream->str_stream_info, CONN_DIR_DOWNSTREAM);
+	}
 	stream_action = nghttp2_client_frame_submit_header(h2_stream_info, h2_session);
 	if (stream_action == ACTION_DROP_DATA){
 		xret = nghttp2_session_send(h2_stream_info->as_client);
diff --git a/plugin/protocol/http2/test/test_http2_stream.cpp b/plugin/protocol/http2/test/test_http2_stream.cpp
index cf4c83d..681ebb9 100644
--- a/plugin/protocol/http2/test/test_http2_stream.cpp
+++ b/plugin/protocol/http2/test/test_http2_stream.cpp
@@ -114,8 +114,10 @@ void UT_Parse_ReqHeaders(nghttp2_session *as_server)
 	/*rewrite date **/
 	field_name.field_id = TFE_HTTP_DATE;
 	field_name.field_name = "date";
+	xret = tfe_http_field_write(tfe_half, &field_name, NULL); // delete field_name
 	xret = tfe_http_field_write(tfe_half, &field_name, "201x101x");
 	EXPECT_EQ(xret, 0);
+
 	field_name.field_id = TFE_HTTP_DATE;
 	hdr_value = tfe_http_field_read((const struct tfe_http_half*)tfe_half, &field_name);
 	EXPECT_STREQ(hdr_value, "201x101x");