DHT is more forgiving when parsing responses and logs messages that fails to decode

src/kademlia/dht_tracker.cpp

@@ -641,8 +641,11 @@ namespace libtorrent { namespace dht
 		catch (std::exception& e)
 		{
 #ifdef TORRENT_DHT_VERBOSE_LOGGING
+			int current_buffer = (m_buffer + 1) & 1;
+			std::string msg(m_in_buf[current_buffer].begin()
+				, m_in_buf[current_buffer].end());
 			TORRENT_LOG(dht_tracker) << "invalid incoming packet: "
-				<< e.what();
+				<< e.what() << "\n" << msg.c_str() << "\n";
 #endif
 		}
 	}

src/kademlia/rpc_manager.cpp

@@ -117,7 +117,7 @@ bool rpc_manager::incoming(msg const& m)
 		// if we don't have the transaction id in our
 		// request list, ignore the packet
 
-		if (m.transaction_id.size() != 2)
+		if (m.transaction_id.size() < 2)
 		{
 #ifdef TORRENT_DHT_VERBOSE_LOGGING
 			TORRENT_LOG(rpc) << "Reply with invalid transaction id size: "