fix problem with dhtput > 2kb (for avatar)

libtorrent/src/kademlia/node.cpp

@@ -1038,6 +1038,7 @@ void node_impl::incoming_request(msg const& m, entry& e)
 		// pointer and length to the whole entry
 		std::pair<char const*, int> buf = msg_keys[mk_p]->data_section();
 		int maxSize = (multi) ? 512 : 8192; // single is bigger for avatar image etc
+		// Note: when increasing maxSize, check m_buf_size @ udp_socket.cpp.
 		if (buf.second > maxSize || buf.second <= 0)
 		{
 			incoming_error(e, "message too big");

libtorrent/src/udp_socket.cpp

@@ -95,7 +95,7 @@ udp_socket::udp_socket(asio::io_service& ios
 #endif
 #endif
 
-	m_buf_size = 2000;
+	m_buf_size = 10000;
 	m_new_buf_size = m_buf_size;
 	m_buf = (char*)malloc(m_buf_size);
 }