diff --git a/src/client.py b/src/client.py
--- a/src/client.py
+++ b/src/client.py
@@ -74,7 +74,7 @@ class Client(NetNode):
 		progress=Progress(localTree.leafCount)
 		while len(nodeStack)>0:
 			indices=[]
-			for i in range(conf.batchSize):
+			for i in range(conf.batchSize.hash):
 				indices.append(nodeStack.pop())
 				if len(nodeStack)==0: break
 			self._outcoming.writeMsg({"command":"req", "index":indices, "dataType":"hash"})
@@ -111,10 +111,10 @@ class Client(NetNode):
 		print(datetime.now(), "sending data:")
 		progress=Progress(len(blocksToTransfer))
 
-		for k in range(0,len(blocksToTransfer),conf.batchSize):
+		for k in range(0,len(blocksToTransfer),conf.batchSize.data):
 			indices=[]
 			blocks=[]
-			for j in range(conf.batchSize):
+			for j in range(conf.batchSize.data):
 				if k+j>=len(blocksToTransfer): break
 				i2=blocksToTransfer[k+j]
 				if i1+1!=i2:
@@ -148,8 +148,8 @@ class Client(NetNode):
 		print(datetime.now(), "receiving data:")
 		progress=Progress(len(blocksToTransfer))
 
-		for k in range(0,len(blocksToTransfer),conf.batchSize):
-			indices=blocksToTransfer[k:k+conf.batchSize]
+		for k in range(0,len(blocksToTransfer),conf.batchSize.data):
+			indices=blocksToTransfer[k:k+conf.batchSize.data]
 			self._outcoming.writeMsg({"command":"req", "index":indices, "dataType":"data"})
 			jsonData,binData=self._incoming.readMsg()
 			assert jsonData["command"]=="send" and jsonData["index"]==indices and jsonData["dataType"]=="data", jsonData