Started inf networking

ethcore/src/client/chain_notify.rs

@@ -40,6 +40,10 @@ pub trait ChainNotify : Send + Sync {
 	fn stop(&self) {
 		// does nothing by default
 	}
+
+	/// fires when chain broadcasts a message
+	fn broadcast(&self, _data: Vec<u8>) {
+	}
 }
 
 impl IpcConfig for ChainNotify { }

ethcore/src/client/client.rs

@@ -1020,6 +1020,10 @@ impl BlockChainClient for Client {
 	fn pending_transactions(&self) -> Vec<SignedTransaction> {
 		self.miner.pending_transactions()
 	}
+
+	fn queue_infinity_message(&self, _message: Bytes) {
+		//TODO: handle message here
+	}
 }
 
 impl MiningBlockChainClient for Client {

ethcore/src/client/test_client.rs

@@ -554,6 +554,10 @@ impl BlockChainClient for TestBlockChainClient {
 		self.miner.import_external_transactions(self, txs);
 	}
 
+	fn queue_infinity_message(&self, _packet: Bytes) {
+		unimplemented!();
+	}
+
 	fn pending_transactions(&self) -> Vec<SignedTransaction> {
 		self.miner.pending_transactions()
 	}

ethcore/src/client/traits.rs

@@ -182,6 +182,9 @@ pub trait BlockChainClient : Sync + Send {
 	/// Queue transactions for importing.
 	fn queue_transactions(&self, transactions: Vec<Bytes>);
 
+	/// Queue packet
+	fn queue_infinity_message(&self, packet: Bytes);
+
 	/// list all transactions
 	fn pending_transactions(&self) -> Vec<SignedTransaction>;
 

sync/src/api.rs

@@ -23,6 +23,7 @@ use ethcore::client::{BlockChainClient, ChainNotify};
 use ethcore::header::BlockNumber;
 use sync_io::NetSyncIo;
 use chain::{ChainSync, SyncStatus};
+use infinity::{InfinitySync};
 use std::net::{SocketAddr, AddrParseError};
 use ipc::{BinaryConvertable, BinaryConvertError, IpcConfig};
 use std::str::FromStr;
@@ -30,6 +31,8 @@ use parking_lot::RwLock;
 
 /// Ethereum sync protocol
 pub const ETH_PROTOCOL: &'static str = "eth";
+/// Infinity protocol
+pub const INF_PROTOCOL: &'static str = "inf";
 
 /// Sync configuration
 #[derive(Debug, Clone)]
@@ -65,18 +68,22 @@ pub trait SyncProvider: Send + Sync {
 pub struct EthSync {
 	/// Network service
 	network: NetworkService,
-	/// Protocol handler
+	/// Ethereum Protocol handler
-	handler: Arc<SyncProtocolHandler>,
+	eth_handler: Arc<SyncProtocolHandler>,
+	/// Infinity Protocol handler
+	inf_handler: Arc<InfProtocolHandler>,
 }
 
 impl EthSync {
 	/// Creates and register protocol with the network service
 	pub fn new(config: SyncConfig, chain: Arc<BlockChainClient>, network_config: NetworkConfiguration) -> Result<Arc<EthSync>, NetworkError> {
+		let inf_sync = InfinitySync::new(&config, chain.clone());
 		let chain_sync = ChainSync::new(config, &*chain);
 		let service = try!(NetworkService::new(try!(network_config.into_basic())));
 		let sync = Arc::new(EthSync{
 			network: service,
-			handler: Arc::new(SyncProtocolHandler { sync: RwLock::new(chain_sync), chain: chain }),
+			eth_handler: Arc::new(SyncProtocolHandler { sync: RwLock::new(chain_sync), chain: chain.clone() }),
+			inf_handler: Arc::new(InfProtocolHandler { sync: RwLock::new(inf_sync), chain: chain }),
 		});
 
 		Ok(sync)
@@ -88,12 +95,12 @@ impl EthSync {
 impl SyncProvider for EthSync {
 	/// Get sync status
 	fn status(&self) -> SyncStatus {
-		self.handler.sync.write().status()
+		self.eth_handler.sync.write().status()
 	}
 }
 
 struct SyncProtocolHandler {
-	/// Shared blockchain client. TODO: this should evetually become an IPC endpoint
+	/// Shared blockchain client.
 	chain: Arc<BlockChainClient>,
 	/// Sync strategy
 	sync: RwLock<ChainSync>,
@@ -122,6 +129,33 @@ impl NetworkProtocolHandler for SyncProtocolHandler {
 	}
 }
 
+struct InfProtocolHandler {
+	/// Shared blockchain client.
+	chain: Arc<BlockChainClient>,
+	/// Sync strategy
+	sync: RwLock<InfinitySync>,
+}
+
+impl NetworkProtocolHandler for InfProtocolHandler {
+	fn initialize(&self, _io: &NetworkContext) {
+	}
+
+	fn read(&self, io: &NetworkContext, peer: &PeerId, packet_id: u8, data: &[u8]) {
+		InfinitySync::dispatch_packet(&self.sync, &mut NetSyncIo::new(io, &*self.chain), *peer, packet_id, data);
+	}
+
+	fn connected(&self, io: &NetworkContext, peer: &PeerId) {
+		self.sync.write().on_peer_connected(&mut NetSyncIo::new(io, &*self.chain), *peer);
+	}
+
+	fn disconnected(&self, io: &NetworkContext, peer: &PeerId) {
+		self.sync.write().on_peer_aborting(&mut NetSyncIo::new(io, &*self.chain), *peer);
+	}
+
+	fn timeout(&self, _io: &NetworkContext, _timer: TimerToken) {
+	}
+}
+
 impl ChainNotify for EthSync {
 	fn new_blocks(&self,
 		imported: Vec<H256>,
@@ -132,8 +166,8 @@ impl ChainNotify for EthSync {
 		_duration: u64)
 	{
 		self.network.with_context(ETH_PROTOCOL, |context| {
-			let mut sync_io = NetSyncIo::new(context, &*self.handler.chain);
+			let mut sync_io = NetSyncIo::new(context, &*self.eth_handler.chain);
-			self.handler.sync.write().chain_new_blocks(
+			self.eth_handler.sync.write().chain_new_blocks(
 				&mut sync_io,
 				&imported,
 				&invalid,
@@ -145,13 +179,22 @@ impl ChainNotify for EthSync {
 
 	fn start(&self) {
 		self.network.start().unwrap_or_else(|e| warn!("Error starting network: {:?}", e));
-		self.network.register_protocol(self.handler.clone(), ETH_PROTOCOL, &[62u8, 63u8])
+		self.network.register_protocol(self.eth_handler.clone(), ETH_PROTOCOL, &[62u8, 63u8])
 			.unwrap_or_else(|e| warn!("Error registering ethereum protocol: {:?}", e));
+		self.network.register_protocol(self.inf_handler.clone(), INF_PROTOCOL, &[1u8])
+			.unwrap_or_else(|e| warn!("Error registering infinity protocol: {:?}", e));
 	}
 
 	fn stop(&self) {
 		self.network.stop().unwrap_or_else(|e| warn!("Error stopping network: {:?}", e));
 	}
+
+	fn broadcast(&self, message: Vec<u8>) {
+		self.network.with_context(ETH_PROTOCOL, |context| {
+			let mut sync_io = NetSyncIo::new(context, &*self.eth_handler.chain);
+			self.inf_handler.sync.write().propagate_packet(&mut sync_io, message.clone());
+		});
+	}
 }
 
 impl IpcConfig for ManageNetwork { }
@@ -201,8 +244,8 @@ impl ManageNetwork for EthSync {
 
 	fn stop_network(&self) {
 		self.network.with_context(ETH_PROTOCOL, |context| {
-			let mut sync_io = NetSyncIo::new(context, &*self.handler.chain);
+			let mut sync_io = NetSyncIo::new(context, &*self.eth_handler.chain);
-			self.handler.sync.write().abort(&mut sync_io);
+			self.eth_handler.sync.write().abort(&mut sync_io);
 		});
 		self.stop();
 	}

sync/src/infinity.rs

@@ -0,0 +1,190 @@
+// Copyright 2015, 2016 Ethcore (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 <http://www.gnu.org/licenses/>.
+
+/// Infinity networking
+
+use util::*;
+use network::*;
+use ethcore::client::{BlockChainClient};
+use sync_io::SyncIo;
+use super::SyncConfig;
+
+known_heap_size!(0, PeerInfo);
+
+type PacketDecodeError = DecoderError;
+
+const PROTOCOL_VERSION: u8 = 1u8;
+
+const STATUS_PACKET: u8 = 0x00;
+const GENERIC_PACKET: u8 = 0x01;
+
+/// Syncing status and statistics
+#[derive(Clone)]
+pub struct NetworkStatus {
+	pub protocol_version: u8,
+	/// The underlying p2p network version.
+	pub network_id: U256,
+	/// Total number of connected peers
+	pub num_peers: usize,
+	/// Total number of active peers
+	pub num_active_peers: usize,
+}
+
+#[derive(Clone)]
+/// Inf peer information
+struct PeerInfo {
+	/// inf protocol version
+	protocol_version: u32,
+	/// Peer chain genesis hash
+	genesis: H256,
+	/// Peer network id
+	network_id: U256,
+}
+
+/// Infinity protocol handler.
+pub struct InfinitySync {
+	chain: Arc<BlockChainClient>,
+	/// All connected peers
+	peers: HashMap<PeerId, PeerInfo>,
+	/// Network ID
+	network_id: U256,
+}
+
+impl InfinitySync {
+	/// Create a new instance of syncing strategy.
+	pub fn new(config: &SyncConfig, chain: Arc<BlockChainClient>) -> InfinitySync {
+		let mut sync = InfinitySync {
+			chain: chain,
+			peers: HashMap::new(),
+			network_id: config.network_id,
+		};
+		sync.reset();
+		sync
+	}
+
+	/// @returns Synchonization status
+	pub fn _status(&self) -> NetworkStatus {
+		NetworkStatus {
+			protocol_version: 1,
+			network_id: self.network_id,
+			num_peers: self.peers.len(),
+			num_active_peers: 0,
+		}
+	}
+
+	#[cfg_attr(feature="dev", allow(for_kv_map))] // Because it's not possible to get `values_mut()`
+	/// Reset sync. Clear all downloaded data but keep the queue
+	fn reset(&mut self) {
+	}
+
+	/// Called by peer to report status
+	fn on_peer_status(&mut self, io: &mut SyncIo, peer_id: PeerId, r: &UntrustedRlp) -> Result<(), PacketDecodeError> {
+		let peer = PeerInfo {
+			protocol_version: try!(r.val_at(0)),
+			network_id: try!(r.val_at(1)),
+			genesis: try!(r.val_at(2)),
+		};
+		trace!(target: "inf", "New peer {} (protocol: {}, network: {:?}, genesis:{})", peer_id, peer.protocol_version, peer.network_id, peer.genesis);
+		if self.peers.contains_key(&peer_id) {
+			debug!(target: "inf", "Unexpected status packet from {}:{}", peer_id, io.peer_info(peer_id));
+			return Ok(());
+		}
+		let chain_info = io.chain().chain_info();
+		if peer.genesis != chain_info.genesis_hash {
+			io.disable_peer(peer_id);
+			trace!(target: "inf", "Peer {} genesis hash mismatch (ours: {}, theirs: {})", peer_id, chain_info.genesis_hash, peer.genesis);
+			return Ok(());
+		}
+		if peer.network_id != self.network_id {
+			io.disable_peer(peer_id);
+			trace!(target: "inf", "Peer {} network id mismatch (ours: {}, theirs: {})", peer_id, self.network_id, peer.network_id);
+			return Ok(());
+		}
+
+		self.peers.insert(peer_id.clone(), peer);
+		Ok(())
+	}
+
+	/// Called when a new peer is connected
+	pub fn on_peer_connected(&mut self, io: &mut SyncIo, peer: PeerId) {
+		trace!(target: "inf", "== Connected {}: {}", peer, io.peer_info(peer));
+		if let Err(e) = self.send_status(io) {
+			debug!(target:"inf", "Error sending status request: {:?}", e);
+			io.disable_peer(peer);
+		}
+	}
+
+	/// Generic packet sender
+	fn send_packet(&mut self, sync: &mut SyncIo, peer_id: PeerId, packet_id: PacketId, packet: Bytes) {
+		if self.peers.contains_key(&peer_id) {
+			if let Err(e) = sync.send(peer_id, packet_id, packet) {
+				debug!(target:"inf", "Error sending request: {:?}", e);
+				sync.disable_peer(peer_id);
+			}
+		}
+	}
+
+	/// Called when peer sends us new transactions
+	fn on_peer_packet(&mut self, _io: &mut SyncIo, _peer_id: PeerId, r: &UntrustedRlp) -> Result<(), PacketDecodeError> {
+		self.chain.queue_infinity_message(r.as_raw().to_vec());
+		Ok(())
+	}
+
+	/// Called by peer when it is disconnecting
+	pub fn on_peer_aborting(&mut self, io: &mut SyncIo, peer: PeerId) {
+		trace!(target: "inf", "== Disconnecting {}: {}", peer, io.peer_info(peer));
+		if self.peers.contains_key(&peer) {
+			debug!(target: "inf", "Disconnected {}", peer);
+			self.peers.remove(&peer);
+		}
+	}
+
+	/// Send Status message
+	fn send_status(&mut self, io: &mut SyncIo) -> Result<(), NetworkError> {
+		let mut packet = RlpStream::new_list(5);
+		let chain = io.chain().chain_info();
+		packet.append(&(PROTOCOL_VERSION as u32));
+		packet.append(&self.network_id);
+		packet.append(&chain.total_difficulty);
+		packet.append(&chain.best_block_hash);
+		packet.append(&chain.genesis_hash);
+		io.respond(STATUS_PACKET, packet.out())
+	}
+
+	pub fn dispatch_packet(sync: &RwLock<InfinitySync>, io: &mut SyncIo, peer: PeerId, packet_id: u8, data: &[u8]) {
+		let rlp = UntrustedRlp::new(data);
+		match packet_id {
+			STATUS_PACKET => sync.write().on_peer_status(io, peer, &rlp).unwrap_or_else(
+				|e| trace!(target: "inf", "Error processing packet: {:?}", e)),
+			GENERIC_PACKET => sync.write().on_peer_packet(io, peer, &rlp).unwrap_or_else(
+				|e| warn!(target: "inf", "Error queueing packet: {:?}", e)),
+			p @ _ => trace!(target: "inf", "Unexpected packet {} from {}", p, peer),
+		};
+	}
+
+	pub fn propagate_packet(&mut self, io: &mut SyncIo, packet: Bytes) {
+		let lucky_peers: Vec<_> = self.peers.keys().cloned().collect();
+		trace!(target: "inf", "Sending packets to {:?}", lucky_peers);
+		for peer_id in lucky_peers {
+			self.send_packet(io, peer_id, GENERIC_PACKET, packet.clone());
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+}
+

sync/src/lib.rs

@@ -82,6 +82,7 @@ extern crate parking_lot;
 mod chain;
 mod blocks;
 mod sync_io;
+mod infinity;
 
 #[cfg(test)]
 mod tests;