// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see .
//! Smart contract based node filter.
extern crate ethcore;
extern crate ethcore_util as util;
extern crate ethcore_network as network;
extern crate native_contracts;
extern crate futures;
extern crate parking_lot;
#[cfg(test)] extern crate ethcore_io as io;
#[macro_use] extern crate log;
use std::sync::Weak;
use std::collections::HashMap;
use native_contracts::PeerSet as Contract;
use network::{NodeId, ConnectionFilter, ConnectionDirection};
use ethcore::client::{BlockChainClient, BlockId, ChainNotify};
use util::{Address, H256, Bytes};
use parking_lot::Mutex;
use futures::Future;
const MAX_CACHE_SIZE: usize = 4096;
/// Connection filter that uses a contract to manage permissions.
pub struct NodeFilter {
contract: Mutex