add a path to submit seal from engine

ethcore/src/client/client.rs

@@ -569,6 +569,13 @@ impl Client {
 		self.miner.update_sealing(self)
 	}
 
+	/// Used by PoA to submit gathered signatures.
+	pub fn submit_seal(&self, block_hash: H256, seal: Vec<Bytes>) {
+		if self.miner.submit_seal(self, block_hash, seal).is_err() {
+			warn!(target: "poa", "Wrong internal seal submission!")
+		}
+	}
+
 	/// Attempt to get a copy of a specific block's final state.
 	///
 	/// This will not fail if given BlockID::Latest.

ethcore/src/engines/tendermint/mod.rs

@@ -116,6 +116,15 @@ impl Tendermint {
 		}
 	}
 
+	fn submit_seal(&self, block_hash: H256, seal: Vec<Bytes>) {
+		if let Some(ref channel) = *self.message_channel.lock() {
+			match channel.send(ClientIoMessage::SubmitSeal(block_hash, seal)) {
+				Ok(_) => trace!(target: "poa", "timeout: SubmitSeal message sent."),
+				Err(err) => warn!(target: "poa", "timeout: Could not send a sealing message {}.", err),
+			}
+		}
+	}
+
 	fn nonce_proposer(&self, proposer_nonce: usize) -> &Address {
 		let ref p = self.our_params;
 		p.authorities.get(proposer_nonce % p.authority_n).unwrap()

ethcore/src/miner/miner.rs

@@ -1008,7 +1008,7 @@ impl MinerService for Miner {
 		ret.map(f)
 	}
 
-	fn submit_seal(&self, chain: &MiningBlockChainClient, pow_hash: H256, seal: Vec<Bytes>) -> Result<(), Error> {
+	fn submit_seal(&self, chain: &MiningBlockChainClient, block_hash: H256, seal: Vec<Bytes>) -> Result<(), Error> {
 		let result =
 			if let Some(b) = self.sealing_work.lock().queue.get_used_if(
 				if self.options.enable_resubmission {
@@ -1016,9 +1016,9 @@ impl MinerService for Miner {
 				} else {
 					GetAction::Take
 				},
-				|b| &b.hash() == &pow_hash
+				|b| &b.hash() == &block_hash
 			) {
-				trace!(target: "miner", "Sealing block {}={}={} with seal {:?}", pow_hash, b.hash(), b.header().bare_hash(), seal);
+				trace!(target: "miner", "Sealing block {}={}={} with seal {:?}", block_hash, b.hash(), b.header().bare_hash(), seal);
 				b.lock().try_seal(&*self.engine, seal).or_else(|(e, _)| {
 					warn!(target: "miner", "Mined solution rejected: {}", e);
 					Err(Error::PowInvalid)

ethcore/src/service.rs

@@ -50,6 +50,8 @@ pub enum ClientIoMessage {
 	TakeSnapshot(u64),
 	/// Trigger sealing update (useful for internal sealing).
 	UpdateSealing,
+	/// Submit seal (useful for internal sealing).
+	SubmitSeal(H256, Vec<Bytes>),
 }
 
 /// Client service setup. Creates and registers client and network services with the IO subsystem.
@@ -219,9 +221,13 @@ impl IoHandler<ClientIoMessage> for ClientIoHandler {
 				}
 			},
 			ClientIoMessage::UpdateSealing => {
-				trace!(target: "authorityround", "message: UpdateSealing");
+				trace!(target: "poa", "message: UpdateSealing");
 				self.client.update_sealing()
 			},
+			ClientIoMessage::SubmitSeal(ref hash, ref seal) => {
+				trace!(target: "poa", "message: SubmitSeal");
+				self.client.submit_seal(*hash, seal.clone())
+			},
 			_ => {} // ignore other messages
 		}
 	}