Make bad protocol disconnects a bit more obvious.

libethereum/BlockChain.cpp

@@ -439,7 +439,7 @@ void BlockChain::checkConsistency()
 			h256 h((byte const*)it->key().data(), h256::ConstructFromPointer);
 			auto dh = details(h);
 			auto p = dh.parent;
-			if (p != h256() && p != m_genesisHash)
+			if (p != h256() && p != m_genesisHash)	// TODO: for some reason the genesis details with the children get squished. not sure why.
 			{
 				auto dp = details(p);
 				if (asserts(contains(dp.children, h)))

libethereum/EthereumPeer.cpp

@@ -288,6 +288,8 @@ void EthereumPeer::attemptSync()
 
 bool EthereumPeer::interpret(unsigned _id, RLP const& _r)
 {
+	try
+	{
 	switch (_id)
 	{
 	case StatusPacket:
@@ -509,5 +511,11 @@ bool EthereumPeer::interpret(unsigned _id, RLP const& _r)
 	default:
 		return false;
 	}
+	}
+	catch (std::exception const& _e)
+	{
+		clogS(NetWarn) << "Peer causing an exception:" << _e.what() << _r;
+	}
+
 	return true;
 }

libp2p/Session.cpp

@@ -297,6 +297,7 @@ bool Session::interpret(RLP const& _r)
 				peerAddress = bi::address_v4(_r[i][0].toHash<FixedHash<4>>().asArray());
 			else
 			{
+				cwarn << "Received bad peer packet:" << _r;
 				disconnect(BadProtocol);
 				return true;
 			}
@@ -372,7 +373,7 @@ bool Session::interpret(RLP const& _r)
 	}
 	catch (std::exception const& _e)
 	{
-		clogS(NetWarn) << "Peer causing an exception:" << _e.what();
+		clogS(NetWarn) << "Peer causing an exception:" << _e.what() << _r;
 		disconnect(BadProtocol);
 		return true;
 	}
@@ -579,6 +580,7 @@ void Session::doRead()
 							if (!interpret(r))
 							{
 								// error - bad protocol
+								clogS(NetWarn) << "Couldn't interpret packet." << RLP(r);
 								disconnect(BadProtocol);
 								return;
 							}