Implemented IsUpToDate to mark the node as ready to start mining

ethereum.go

@@ -138,6 +138,18 @@ func (s *Ethereum) IsMining() bool {
 func (s *Ethereum) PeerCount() int {
 	return s.peers.Len()
 }
+func (s *Ethereum) IsUpToDate() bool {
+	upToDate := true
+	eachPeer(s.peers, func(peer *Peer, e *list.Element) {
+		if atomic.LoadInt32(&peer.connected) == 1 {
+			if peer.catchingUp == true {
+				upToDate = false
+			}
+		}
+	})
+	return upToDate
+}
+
 func (s *Ethereum) IsListening() bool {
 	return s.listening
 }

peer.go

@@ -389,6 +389,8 @@ func (p *Peer) HandleInbound() {
 						p.CatchupWithPeer(p.ethereum.BlockChain().CurrentBlock.Hash())
 					}
 				}
+
+				p.catchingUp = false
 			case ethwire.MsgTxTy:
 				// If the message was a transaction queue the transaction
 				// in the TxPool where it will undergo validation and