Disconnect peers on a fork (#1738)

json/src/spec/params.rs

@@ -17,6 +17,7 @@
 //! Spec params deserialization.
 
 use uint::Uint;
+use hash::H256;
 
 /// Spec params.
 #[derive(Debug, PartialEq, Deserialize)]
@@ -33,6 +34,12 @@ pub struct Params {
 	/// Minimum gas limit.
 	#[serde(rename="minGasLimit")]
 	pub min_gas_limit: Uint,
+	/// Option fork block number to check.
+	#[serde(rename="forkBlock")]
+	pub fork_block: Option<Uint>,
+	/// Expected fork block hash.
+	#[serde(rename="forkCanonHash")]
+	pub fork_hash: Option<H256>,
 }
 
 #[cfg(test)]

json/src/spec/spec.rs

@@ -79,6 +79,8 @@ mod tests {
 		"maximumExtraDataSize": "0x20",
 		"minGasLimit": "0x1388",
 		"networkID" : "0x2"
+		"forkBlock": "0xffffffffffffffff",
+		"forkCanonHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
 	},
 	"genesis": {
 		"seal": {