Propagate known transactions to new peers on connect

eth/protocol.go

@@ -46,6 +46,7 @@ type ethProtocol struct {
 // used as an argument to EthProtocol
 type txPool interface {
 	AddTransactions([]*types.Transaction)
+	GetTransactions() types.Transactions
 }
 
 type chainManager interface {
@@ -101,6 +102,7 @@ func runEthProtocol(txPool txPool, chainManager chainManager, blockPool blockPoo
 	}
 	err = self.handleStatus()
 	if err == nil {
+		self.propagateTxs()
 		for {
 			err = self.handle()
 			if err != nil {
@@ -324,3 +326,13 @@ func (self *ethProtocol) protoErrorDisconnect(code int, format string, params ..
 	}
 
 }
+
+func (self *ethProtocol) propagateTxs() {
+	transactions := self.txPool.GetTransactions()
+	iface := make([]interface{}, len(transactions))
+	for i, transaction := range transactions {
+		iface[i] = transaction
+	}
+
+	self.rw.WriteMsg(p2p.NewMsg(TxMsg, iface...))
+}