Use network id for the web3_net_version return.

rpc/src/v1/impls/net.rs

@@ -36,7 +36,7 @@ impl<S> NetClient<S> where S: SyncProvider {
 
 impl<S> Net for NetClient<S> where S: SyncProvider + 'static {
 	fn version(&self, _: Params) -> Result<Value, Error> {
-		Ok(Value::String(format!("{}", take_weak!(self.sync).status().protocol_version).to_owned()))
+		Ok(Value::String(format!("{}", take_weak!(self.sync).status().network_id).to_owned()))
 	}
 
 	fn peer_count(&self, _params: Params) -> Result<Value, Error> {

rpc/src/v1/tests/helpers/sync_provider.rs

@@ -16,13 +16,14 @@
 
 //! Test implementation of SyncProvider.
 
+use util::U256;
 use ethsync::{SyncProvider, SyncStatus, SyncState};
 use std::sync::{RwLock};
 
 /// TestSyncProvider config.
 pub struct Config {
 	/// Protocol version.
-	pub protocol_version: u8,
+	pub network_id: U256,
 	/// Number of peers.
 	pub num_peers: usize,
 }
@@ -39,7 +40,8 @@ impl TestSyncProvider {
 		TestSyncProvider {
 			status: RwLock::new(SyncStatus {
 				state: SyncState::NotSynced,
-				protocol_version: config.protocol_version,
+				network_id: config.network_id,
+				protocol_version: 63,
 				start_block_number: 0,
 				last_imported_block_number: None,
 				highest_block_number: None,

rpc/src/v1/tests/net.rs

@@ -21,7 +21,7 @@ use v1::tests::helpers::{Config, TestSyncProvider};
 
 fn sync_provider() -> Arc<TestSyncProvider> {
 	Arc::new(TestSyncProvider::new(Config {
-		protocol_version: 65,
+		network_id: 3,
 		num_peers: 120,
 	}))
 }
@@ -34,7 +34,7 @@ fn rpc_net_version() {
 	io.add_delegate(net);
 
 	let request = r#"{"jsonrpc": "2.0", "method": "net_version", "params": [], "id": 1}"#;
-	let response = r#"{"jsonrpc":"2.0","result":"65","id":1}"#;
+	let response = r#"{"jsonrpc":"2.0","result":"3","id":1}"#;
 
 	assert_eq!(io.handle_request(request), Some(response.to_owned()));
 }

sync/src/chain.rs

@@ -125,6 +125,8 @@ pub struct SyncStatus {
 	pub state: SyncState,
 	/// Syncing protocol version. That's the maximum protocol version we connect to.
 	pub protocol_version: u8,
+	/// The underlying p2p network version.
+	pub network_id: U256,
 	/// BlockChain height for the moment the sync started.
 	pub start_block_number: BlockNumber,
 	/// Last fully downloaded and imported block number (if any).
@@ -249,6 +251,7 @@ impl ChainSync {
 		SyncStatus {
 			state: self.state.clone(),
 			protocol_version: 63,
+			network_id: self.network_id,
 			start_block_number: self.starting_block,
 			last_imported_block_number: self.last_imported_block,
 			highest_block_number: self.highest_block,