Sort transactions based on the nonce

* Added a transaction sorter

ethchain/transaction.go

@@ -147,22 +147,6 @@ func (tx *Transaction) RlpValueDecode(decoder *ethutil.Value) {
 	if len(tx.Recipient) == 0 {
 		tx.contractCreation = true
 	}
-
-	/*
-		// If the list is of length 10 it's a contract creation tx
-		if decoder.Len() == 10 {
-			tx.contractCreation = true
-			tx.Init = decoder.Get(6).Bytes()
-
-			tx.v = byte(decoder.Get(7).Uint())
-			tx.r = decoder.Get(8).Bytes()
-			tx.s = decoder.Get(9).Bytes()
-		} else {
-			tx.v = byte(decoder.Get(6).Uint())
-			tx.r = decoder.Get(7).Bytes()
-			tx.s = decoder.Get(8).Bytes()
-		}
-	*/
 }
 
 func (tx *Transaction) String() string {
@@ -228,3 +212,15 @@ func (self *Receipt) String() string {
 		self.PostState,
 		self.CumulativeGasUsed)
 }
+
+// Transaction slice type for basic sorting
+type Transactions []*Transaction
+
+func (s Transactions) Len() int      { return len(s) }
+func (s Transactions) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
+
+type TxByNonce struct{ Transactions }
+
+func (s TxByNonce) Less(i, j int) bool {
+	return s.Transactions[i].Nonce < s.Transactions[j].Nonce
+}

ethminer/miner.go

@@ -5,6 +5,7 @@ import (
 	"github.com/ethereum/eth-go/ethchain"
 	"github.com/ethereum/eth-go/ethutil"
 	"github.com/ethereum/eth-go/ethwire"
+	"sort"
 )
 
 type Miner struct {
@@ -12,7 +13,7 @@ type Miner struct {
 	ethereum    ethchain.EthManager
 	coinbase    []byte
 	reactChan   chan ethutil.React
-	txs         []*ethchain.Transaction
+	txs         ethchain.Transactions
 	uncles      []*ethchain.Block
 	block       *ethchain.Block
 	powChan     chan []byte
@@ -132,6 +133,8 @@ func (self *Miner) mineNewBlock() {
 		self.block.SetUncles(self.uncles)
 	}
 
+	// Sort the transactions by nonce in case of odd network propagation
+	sort.Sort(ethchain.TxByNonce{self.txs})
 	// Accumulate all valid transaction and apply them to the new state
 	receipts, txs := stateManager.ApplyTransactions(self.block.State(), self.block, self.txs)
 	self.txs = txs