fix

src/client/fm_client.cpp

@@ -139,7 +139,6 @@ void Client::handleCommand_FreeminerInit(NetworkPacket *pkt)
 	//	packet[TOCLIENT_INIT_PROTOCOL_VERSION_FM].convert( not used );
 }
 
-
 void Client::handleCommand_BlockDatas(NetworkPacket *pkt)
 {
 	const auto str = std::string{pkt->getString(0), pkt->getSize()};
@@ -171,7 +170,23 @@ void Client::handleCommand_BlockDatas(NetworkPacket *pkt)
 	packet.convert_safe(
 			TOCLIENT_BLOCKDATA_CONTENT_ONLY_PARAM2, block->content_only_param2);
 
+	if (block->content_only == CONTENT_IGNORE) {
+		try {
 	block->deSerialize(istr, m_server_ser_ver, false);
+		} catch (const std::exception &ex) {
+			errorstream << "fm block deSerialize fail " << bpos << " " << block->far_step
+						<< " : " << ex.what() << " : " << pkt->getSize() << " "
+						<< packet.size() << " v=" << (short)m_server_ser_ver << "\n";
+#if !NDEBUG
+			errorstream << "bad data " << istr.str().size() << " : " << istr.str()
+						<< "\n";
+#endif
+			return;
+		}
+	} else {
+		block->fill({block->content_only, block->content_only_param1,
+				block->content_only_param2});
+	}
 	s32 h = 0; // for convert to atomic
 	packet[TOCLIENT_BLOCKDATA_HEAT].convert(h);
 	block->heat = h;

src/defaultsettings.cpp

@@ -386,7 +386,6 @@ void fm_set_default_settings(Settings *settings) {
 #ifdef HAVE_TOUCHSCREENGUI
 	settings->setDefault("touchscreen", android ? "true" : "false");
 	settings->setDefault("touchtarget", "true");
-	settings->setDefault("touchscreen_threshold","20");
 #endif
 
 #ifdef __EMSCRIPTEN__

src/fm_server.cpp

@@ -590,8 +590,6 @@ void Server::SendBlockFm(session_t peer_id, MapBlockP block, u8 ver,
 	thread_local const int net_compression_level =
 			rangelim(g_settings->getS16("map_compression_level_net"), -1, 9);
 
-	bool reliable = 1;
-
 	g_profiler->add("Connection: blocks sent", 1);
 
 	MSGPACK_PACKET_INIT((int)TOCLIENT_BLOCKDATAS, 8);
@@ -610,6 +608,7 @@ void Server::SendBlockFm(session_t peer_id, MapBlockP block, u8 ver,
 
 	PACK(TOCLIENT_BLOCKDATA_CONTENT_ONLY_PARAM1, block->content_only_param1);
 	PACK(TOCLIENT_BLOCKDATA_CONTENT_ONLY_PARAM2, block->content_only_param2);
+
 	NetworkPacket pkt(TOCLIENT_BLOCKDATAS, buffer.size(), peer_id);
 	pkt.putLongString({buffer.data(), buffer.size()});
 	auto s = std::string{pkt.getString(0), pkt.getSize()};

src/mapblock.h

@@ -518,6 +518,11 @@ class MapBlock
 
 	void pushElementsToCircuit(Circuit* circuit);
 
+	void fill(const MapNode & n) {
+		for (u32 i = 0; i < nodecount; ++i)
+			data[i] = n;
+	}
+
 	using mesh_type = std::shared_ptr<MapBlockMesh>;
 	using block_step_t = uint8_t;