change broadcast interface, add basic message handling

ethcore/src/client/chain_notify.rs

@@ -42,7 +42,7 @@ pub trait ChainNotify : Send + Sync {
 	}
 
 	/// fires when chain broadcasts a message
-	fn broadcast(&self, _data: Vec<u8>) {
+	fn broadcast(&self, _data: &[u8]) {
 	}
 }
 

ethcore/src/client/client.rs

@@ -25,6 +25,7 @@ use time::precise_time_ns;
 use util::{journaldb, rlp, Bytes, View, PerfTimer, Itertools, Mutex, RwLock};
 use util::journaldb::JournalDB;
 use util::rlp::{UntrustedRlp};
+use util::ec::recover;
 use util::{U256, H256, Address, H2048, Uint};
 use util::sha3::*;
 use util::kvdb::*;
@@ -1021,8 +1022,15 @@ impl BlockChainClient for Client {
 		self.miner.pending_transactions()
 	}
 
-	fn queue_infinity_message(&self, _message: Bytes) {
-		//TODO: handle message here
+	fn queue_infinity_message(&self, message: Bytes) {
+		let full_rlp = UntrustedRlp::new(&message);
+		let signature = full_rlp.val_at(0).unwrap_or(return);
+		let message: Vec<_> = full_rlp.val_at(1).unwrap_or(return);
+		let message_rlp = UntrustedRlp::new(&message);
+		let pub_key = recover(&signature, &message.sha3()).unwrap_or(return);
+		if let Some(new_message) = self.engine.handle_message(pub_key.sha3().into(), message_rlp) {
+			self.notify(|notify| notify.broadcast(new_message.as_raw()));
+		}
 	}
 }
 

ethcore/src/engines/mod.rs

@@ -30,7 +30,7 @@ pub use self::tendermint::Tendermint;
 pub use self::signed_vote::{SignedVote, VoteError};
 pub use self::propose_collect::{ProposeCollect};
 
-use common::{HashMap, SemanticVersion, Header, EnvInfo, Address, Builtin, BTreeMap, U256, Bytes, SignedTransaction, Error};
+use common::{HashMap, SemanticVersion, Header, EnvInfo, Address, Builtin, BTreeMap, U256, Bytes, SignedTransaction, Error, UntrustedRlp};
 use account_provider::AccountProvider;
 use block::ExecutedBlock;
 use spec::CommonParams;
@@ -121,7 +121,7 @@ pub trait Engine : Sync + Send {
 
 	/// Handle any potential consensus messages;
 	/// updating consensus state and potentially issuing a new one.
-	fn handle_message(&self, sender: Address, message: Bytes) -> Option<Vec<u8>> { None }
+	fn handle_message(&self, sender: Address, message: UntrustedRlp) -> Option<UntrustedRlp> { None }
 
 	// TODO: builtin contract routing - to do this properly, it will require removing the built-in configuration-reading logic
 	// from Spec into here and removing the Spec::builtins field.

ethcore/src/engines/tendermint.rs

@@ -88,6 +88,10 @@ impl Tendermint {
 		let ref p = self.our_params;
 		p.validators.get(p.proposer_nonce%p.validator_n).unwrap().clone()
 	}
+
+	fn propose_message(&self, message: UntrustedRlp) -> Option<UntrustedRlp> {
+		None
+	}
 }
 
 impl Engine for Tendermint {
@@ -140,13 +144,11 @@ impl Engine for Tendermint {
 		})
 	}
 
-	fn handle_message(&self, sender: Address, message: Bytes) -> Option<Vec<u8>> {
-		match message[0] {
-			0 => println!("0"),
-			_ => println!("unknown"),
+	fn handle_message(&self, sender: Address, message: UntrustedRlp) -> Option<UntrustedRlp> {
+		match message.val_at(0).unwrap_or(return None) {
+			0u8 if sender == self.proposer() => self.propose_message(message),
+			_ => None,
 		}
-		//let sig: Signature = message.into();
-		None
 	}
 
 	fn verify_block_basic(&self, header: &Header, _block: Option<&[u8]>) -> result::Result<(), Error> {

sync/src/api.rs

@@ -189,7 +189,7 @@ impl ChainNotify for EthSync {
 		self.network.stop().unwrap_or_else(|e| warn!("Error stopping network: {:?}", e));
 	}
 
-	fn broadcast(&self, message: Vec<u8>) {
+	fn broadcast(&self, message: &[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());