From 23983114553cf95d1889f91d70fde04c40235c31 Mon Sep 17 00:00:00 2001
From: keorn <pczaban@gmail.com>
Date: Thu, 30 Mar 2017 14:01:19 -0400
Subject: [PATCH] add eip155 validation (#5346)

---
 ethcore/src/engines/mod.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/ethcore/src/engines/mod.rs b/ethcore/src/engines/mod.rs
index f292a06d8..438b9bda0 100644
--- a/ethcore/src/engines/mod.rs
+++ b/ethcore/src/engines/mod.rs
@@ -39,7 +39,7 @@ use account_provider::AccountProvider;
 use block::ExecutedBlock;
 use builtin::Builtin;
 use env_info::EnvInfo;
-use error::Error;
+use error::{Error, TransactionError};
 use spec::CommonParams;
 use evm::Schedule;
 use header::Header;
@@ -157,6 +157,13 @@ pub trait Engine : Sync + Send {
 	// TODO: consider including State in the params.
 	fn verify_transaction_basic(&self, t: &UnverifiedTransaction, _header: &Header) -> Result<(), Error> {
 		t.check_low_s()?;
+
+		if let Some(n) = t.network_id() {
+			if n != self.params().chain_id {
+				return Err(TransactionError::InvalidNetworkId.into());
+			}
+		}
+
 		Ok(())
 	}