diff --git a/aws-code/transaction_generator.go b/aws-code/transaction_generator.go
index cfd81d767..b5730c93f 100644
--- a/aws-code/transaction_generator.go
+++ b/aws-code/transaction_generator.go
@@ -6,6 +6,7 @@ import (
 	"flag"
 	"fmt"
 	"harmony-benchmark/blockchain"
+	"harmony-benchmark/client"
 	"harmony-benchmark/consensus"
 	"harmony-benchmark/log"
 	"harmony-benchmark/node"
@@ -50,6 +51,32 @@ func getNewFakeTransactions(dataNode *node.Node, numTxs int) []*blockchain.Trans
 			for index, value := range utxoMap {
 				countAll++
 				if rand.Intn(100) < 30 { // 30% sample rate to select UTXO to use for new transactions
+					// Sharding related test code. To be deleted soon
+					//if dataNode.Consensus.ShardID == 0 {
+					//	txin := blockchain.TXInput{txId, index, address, dataNode.Consensus.ShardID}
+					//	txin2 := blockchain.TXInput{txId, index, address, dataNode.Consensus.ShardID+1}
+					//	txout := blockchain.TXOutput{value, strconv.Itoa(rand.Intn(10000))}
+					//	tx := blockchain.Transaction{[32]byte{}, []blockchain.TXInput{txin, txin2}, []blockchain.TXOutput{txout}}
+					//	tx.SetID()
+					//
+					//	if count >= numTxs {
+					//		continue
+					//	}
+					//	outputs = append(outputs, &tx)
+					//	count++
+					//} else {
+					//	txin := blockchain.TXInput{txId, index, address, dataNode.Consensus.ShardID}
+					//	txout := blockchain.TXOutput{value, strconv.Itoa(rand.Intn(10000))}
+					//	tx := blockchain.Transaction{[32]byte{}, []blockchain.TXInput{txin}, []blockchain.TXOutput{txout}}
+					//	tx.SetID()
+					//
+					//	if count >= numTxs {
+					//		continue
+					//	}
+					//	outputs = append(outputs, &tx)
+					//	count++
+					//}
+
 					// Spend the money of current UTXO to a random address in [1 - 1000]
 					txin := blockchain.TXInput{txId, index, address, dataNode.Consensus.ShardID}
 					txout := blockchain.TXOutput{value, strconv.Itoa(rand.Intn(10000))}
@@ -149,7 +176,7 @@ func main() {
 		consensusObj := consensus.NewConsensus("0", clientPort, "0", nil, p2p.Peer{})
 
 		clientNode := node.NewNode(&consensusObj)
-
+		clientNode.Client = client.NewClient()
 		go func() {
 			clientNode.StartServer(clientPort)
 		}()
diff --git a/benchmark_main.go b/benchmark_main.go
index 03cb6e836..eb8ff2578 100644
--- a/benchmark_main.go
+++ b/benchmark_main.go
@@ -50,7 +50,7 @@ func getPeers(myIp, myPort, myShardId string, config *[][]string) []p2p.Peer {
 func getClientPeer(config *[][]string) *p2p.Peer {
 	for _, node := range *config {
 		ip, port, status := node[0], node[1], node[2]
-		if status == "client" {
+		if status != "client" {
 			continue
 		}
 		peer := p2p.Peer{Port: port, Ip: ip}
diff --git a/client/client.go b/client/client.go
index d64a4f9b4..875d44d0e 100644
--- a/client/client.go
+++ b/client/client.go
@@ -1,14 +1,40 @@
 package client
 
 import (
+	"bytes"
+	"encoding/gob"
 	"harmony-benchmark/blockchain"
+	"harmony-benchmark/log"
 )
 
 // A client represent a entity/user which send transactions and receive responses from the harmony network
 type Client struct {
 	pendingCrossTxs map[[32]byte]*blockchain.Transaction // map of TxId to pending cross shard txs
+
+	log log.Logger // Log utility
 }
 
 func (client *Client) TransactionMessageHandler(msgPayload []byte) {
-	// TODO: Implement this
+	messageType := TransactionMessageType(msgPayload[0])
+	switch messageType {
+	case CROSS_TX:
+		txDecoder := gob.NewDecoder(bytes.NewReader(msgPayload[1:])) // skip the CROSS_TX messge type
+
+		proofList := new([]blockchain.CrossShardTxProof)
+		err := txDecoder.Decode(&proofList)
+		if err != nil {
+			client.log.Error("Failed deserializing cross transaction proof list")
+		}
+
+		// TODO: process the proof list
+	}
+}
+
+// Create a new Node
+func NewClient() *Client {
+	client := Client{}
+
+	// Logger
+	client.log = log.New()
+	return &client
 }
diff --git a/client/message.go b/client/message.go
index 11f2ac719..b9e5225a5 100644
--- a/client/message.go
+++ b/client/message.go
@@ -2,6 +2,8 @@ package client
 
 import (
 	"bytes"
+	"encoding/gob"
+	"harmony-benchmark/blockchain"
 	"harmony-benchmark/common"
 )
 
@@ -21,9 +23,11 @@ const (
 )
 
 //ConstructStopMessage is STOP message
-func ConstructProofOfAcceptOrRejectMessage() []byte {
+func ConstructProofOfAcceptOrRejectMessage(proofs []blockchain.CrossShardTxProof) []byte {
 	byteBuffer := bytes.NewBuffer([]byte{byte(common.CLIENT)})
 	byteBuffer.WriteByte(byte(TRANSACTION))
 	byteBuffer.WriteByte(byte(CROSS_TX))
+	encoder := gob.NewEncoder(byteBuffer)
+	encoder.Encode(proofs)
 	return byteBuffer.Bytes()
 }
diff --git a/node/node_handler.go b/node/node_handler.go
index 642406576..b79491ddb 100644
--- a/node/node_handler.go
+++ b/node/node_handler.go
@@ -76,7 +76,9 @@ func (node *Node) NodeHandler(conn net.Conn) {
 		actionType := client.ClientMessageType(msgType)
 		switch actionType {
 		case client.TRANSACTION:
-			node.Client.TransactionMessageHandler(msgPayload)
+			if node.Client != nil {
+				node.Client.TransactionMessageHandler(msgPayload)
+			}
 		}
 	}
 }
@@ -169,7 +171,15 @@ func (node *Node) WaitForConsensusReady(readySignal chan int) {
 // This is called by consensus participants to verify the block they are running consensus on
 func (node *Node) SendBackProofOfAcceptOrReject() {
 	if node.ClientPeer != nil {
-		p2p.SendMessage(*node.ClientPeer, client.ConstructProofOfAcceptOrRejectMessage())
+		node.crossTxToReturnMutex.Lock()
+		proofs := []blockchain.CrossShardTxProof{}
+		for _, txAndProof := range node.CrossTxsToReturn {
+			proofs = append(proofs, *txAndProof.Proof)
+		}
+		node.CrossTxsToReturn = nil
+		node.crossTxToReturnMutex.Unlock()
+
+		p2p.SendMessage(*node.ClientPeer, client.ConstructProofOfAcceptOrRejectMessage(proofs))
 	}
 }
 
@@ -190,7 +200,7 @@ func (node *Node) PostConsensusProcessing(newBlock *blockchain.Block) {
 	node.transactionInConsensus = []*blockchain.Transaction{}
 
 	if node.Consensus.IsLeader {
-		// Move crossTx in consensus into the list to be returned to client
+		// Move crossTx-in-consensus into the list to be returned to client
 		for _, crossTxAndProof := range node.CrossTxsInConsensus {
 			crossTxAndProof.Proof.BlockHash = newBlock.Hash
 			// TODO: fill in the signature proofs