diff --git a/main.lua b/main.lua
index f8722495..b512c1f7 100644
--- a/main.lua
+++ b/main.lua
@@ -24,10 +24,6 @@ SAVEDIR=fs.getSaveDirectory()
 LOADED=false
 DAILYLAUNCH=false
 EDITING=""
-NET={
-	login=false,
-	allow_online=false,
-}
 ERRDATA={}
 
 --System setting
@@ -80,6 +76,7 @@ require"parts.gametoolfunc"
 SCR.setSize(1280,720)--Initialize Screen size
 FIELD[1]=newBoard()--Initialize field[1]
 
+NET=		require"parts.net"
 AIBUILDER=	require"parts.AITemplate"
 FREEROW=	require"parts.freeRow"
 
diff --git a/parts/gametoolfunc.lua b/parts/gametoolfunc.lua
index 7306cd6f..2b2cf3f6 100644
--- a/parts/gametoolfunc.lua
+++ b/parts/gametoolfunc.lua
@@ -1120,7 +1120,7 @@ do
 				local message,op=WS.read("app")
 				if message then
 					if op=="ping"then
-						WS.send("app",message,"pong")
+						NET.pong("app",message)
 					elseif op=="pong"then
 					elseif op=="close"then
 						message=JSON.decode(message)
@@ -1155,7 +1155,7 @@ do
 				local message,op=WS.read("user")
 				if message then
 					if op=="ping"then
-						WS.send("user",message,"pong")
+						NET.pong("user",message)
 					elseif op=="pong"then
 					elseif op=="close"then
 						message=JSON.decode(message)
@@ -1171,25 +1171,17 @@ do
 							if res.id then
 								USER.id=res.id
 								USER.authToken=res.authToken
-								WS.send("user",JSON.encode{action=0})
+								NET.getAccessToken()
 							end
 							FILE.save(USER,"conf/user","q")
 							LOG.print(text.loginSuccessed)
 
 							--Get self infos
-							WS.send("user",JSON.encode{
-								action=1,
-								data={
-									id=USER.id,
-								},
-							})
+							NET.getSelfInfo()
 						elseif res.action==0 then
 							USER.accessToken=res.accessToken
 							LOG.print(text.accessSuccessed)
-							WS.connect("play","/play",JSON.encode{
-								id=USER.id,
-								accessToken=USER.accessToken,
-							})
+							NET.wsConnectPlay()
 						elseif res.action==1 then
 							USER.name=res.username
 							USER.motto=res.motto
@@ -1209,7 +1201,7 @@ do
 				local message,op=WS.read("chat")
 				if message then
 					if op=="ping"then
-						WS.send("chat",message,"pong")
+						NET.pong("chat",message)
 					elseif op=="pong"then
 					elseif op=="close"then
 						message=JSON.decode(message)
@@ -1233,7 +1225,7 @@ do
 				local message,op=WS.read("play")
 				if message then
 					if op=="ping"then
-						WS.send("play",message,"pong")
+						NET.pong("play",message)
 					elseif op=="pong"then
 					elseif op=="close"then
 						message=JSON.decode(message)
@@ -1259,7 +1251,7 @@ do
 				local message,op=WS.read("stream")
 				if message then
 					if op=="ping"then
-						WS.send("stream",message,"pong")
+						NET.pong("stream",message)
 					elseif op=="pong"then
 					elseif op=="close"then
 						message=JSON.decode(message)
diff --git a/parts/net.lua b/parts/net.lua
new file mode 100644
index 00000000..05e05c95
--- /dev/null
+++ b/parts/net.lua
@@ -0,0 +1,84 @@
+local data=love.data
+local NET={
+	login=false,
+	allow_online=false,
+}
+
+--Account
+function NET.pong(wsName,message)
+	WS.send(wsName,message,"pong")
+end
+function NET.getAccessToken()
+	WS.send("user",JSON.encode{action=0})
+end
+function NET.getSelfInfo()
+	WS.send("user",JSON.encode{
+		action=1,
+		data={
+			id=USER.id,
+		},
+	})
+end
+
+--Play
+function NET.wsConnectPlay()
+	WS.connect("play","/play",JSON.encode{
+		id=USER.id,
+		accessToken=USER.accessToken,
+	})
+end
+function NET.signal_ready()
+	WS.send("play","R")
+end
+function NET.uploadRecStream(stream)
+	WS.send("stream",data.encode("string","base64",stream))
+end
+function NET.signal_die()
+	WS.send("play","D")
+end
+function NET.signal_quit()
+	WS.send("play","Q")
+end
+
+--Room
+function NET.freshRoom()
+	WS.send("play","/play",JSON.encode{
+		action=0,
+		data={
+			type=nil,
+			begin=0,
+			count=10,
+		}
+	})
+end
+function NET.createRoom()
+	WS.send("play",JSON.encode{
+		action=1,
+		data={
+			type=nil,
+			name=(USER.name or"???").."'s room",
+			password=nil,
+			conf=dumpBasicConfig(),
+		}
+	})
+end
+function NET.enterRoom(roomID,password)
+	WS.send("play","/play",JSON.encode{
+		action=2,
+		data={
+			rid=roomID,
+			conf=dumpBasicConfig(),
+			password=password,
+		}
+	})
+end
+
+--Chat
+function NET.sendChatMes(mes)
+	WS.send("chat","T"..data.encode("string","base64",mes))
+end
+function NET.quitChat()
+	WS.send("chat","Q")
+end
+
+return NET
\ No newline at end of file
diff --git a/parts/player/player.lua b/parts/player/player.lua
index 44fcc9d6..1e822aca 100644
--- a/parts/player/player.lua
+++ b/parts/player/player.lua
@@ -1813,7 +1813,7 @@ function Player.lose(P,force)
 		gameOver()
 		P:newTask(#PLAYERS>1 and tick_lose or tick_finish)
 		if GAME.net then
-			WS.send("play","D")
+			NET.signal_die()
 		else
 			TASK.new(tick_autoPause)
 		end
diff --git a/parts/scenes/main.lua b/parts/scenes/main.lua
index 0f074243..209f5375 100644
--- a/parts/scenes/main.lua
+++ b/parts/scenes/main.lua
@@ -82,7 +82,7 @@ function scene.keyDown(key)
 					TEXT.show(text.needUpdate,640,450,60,"flicker")
 					SFX.play("finesseError")
 				else
-					WS.send("user",JSON.encode{action=0})
+					NET.getAccessToken()
 				end
 			else
 				SCN.go("login")
diff --git a/parts/scenes/net_chat.lua b/parts/scenes/net_chat.lua
index 9c2242e2..fb8696dc 100644
--- a/parts/scenes/net_chat.lua
+++ b/parts/scenes/net_chat.lua
@@ -3,12 +3,12 @@ local data=love.data
 
 local textBox=WIDGET.newTextBox{name="texts",x=40,y=50,w=1200,h=430}
 local remain--People in chat room
-local heartBeatTimer
 local escapeTimer=0
 
 local function sendMessage()
 	local W=WIDGET.active.input
-	if #W.value>0 and WS.send("chat","T"..data.encode("string","base64",W.value))then
+	if #W.value>0 then
+		NET.sendChatMes(W.value)
 		W.value=""
 	end
 end
@@ -16,7 +16,6 @@ end
 local scene={}
 
 function scene.sceneInit()
-	heartBeatTimer=0
 	remain=false
 
 	local texts=textBox.texts
@@ -30,7 +29,7 @@ function scene.sceneInit()
 	BG.set("none")
 end
 function scene.sceneBack()
-	WS.send("chat","Q")
+	NET.quitChat()
 	LOG.print(text.wsDisconnected,"warn")
 end
 
@@ -80,13 +79,6 @@ function scene.socketRead(mes)
 	end
 end
 
-function scene.update(dt)
-	heartBeatTimer=heartBeatTimer+dt
-	if heartBeatTimer>42 then
-		heartBeatTimer=0
-		WS.send("chat","P")
-	end
-end
 function scene.draw()
 	setFont(25)
 	gc.setColor(1,1,1)
diff --git a/parts/scenes/net_game.lua b/parts/scenes/net_game.lua
index f1d46441..7ea561f9 100644
--- a/parts/scenes/net_game.lua
+++ b/parts/scenes/net_game.lua
@@ -20,7 +20,6 @@ end
 
 local playerInitialized
 local playing
-local heartBeatTimer
 local lastUpstreamTime
 local upstreamProgress
 local lastBackTime=0
@@ -30,7 +29,7 @@ local touchMoveLastFrame=false
 local scene={}
 
 function scene.sceneBack()
-	WS.send("play","Q")
+	NET.signal_quit()
 	LOG.print(text.wsDisconnected,"warn")
 	love.keyboard.setKeyRepeat(true)
 end
@@ -107,7 +106,7 @@ function scene.keyDown(key)
 		end
 	elseif key=="space"then
 		if not PLAYERS[1].ready then
-			WS.send("play","R")
+			NET.signal_ready()
 		end
 	end
 end
@@ -262,14 +261,7 @@ function scene.update(dt)
 	local GAME=GAME
 
 	if WS.status("play")~="running"and not SCN.swapping then SCN.back()end
-	if not playing then
-		heartBeatTimer=heartBeatTimer+dt
-		if heartBeatTimer>42 then
-			heartBeatTimer=0
-			WS.send("play","P")
-		end
-		return
-	end
+	if not playing then return end
 
 	touchMoveLastFrame=false
 	updateVirtualkey()
@@ -289,7 +281,7 @@ function scene.update(dt)
 		local stream
 		stream,upstreamProgress=dumpRecording(GAME.rep,upstreamProgress)
 		if #stream>0 then
-			WS.send("stream",data.encode("string","base64",stream))
+			NET.uploadRecStream(stream)
 		else
 			ins(GAME.rep,GAME.frame)
 			ins(GAME.rep,0)
diff --git a/parts/scenes/net_rooms.lua b/parts/scenes/net_rooms.lua
index 3226ff21..2037bd59 100644
--- a/parts/scenes/net_rooms.lua
+++ b/parts/scenes/net_rooms.lua
@@ -9,24 +9,7 @@ local lastCreateRoomTime=0
 local function fresh()
 	lastfreshTime=TIME()
 	rooms=nil
-	WS.send("play","/play",JSON.encode{
-		action=0,
-		data={
-			type=nil,
-			begin=0,
-			count=10,
-		}
-	})
-end
-local function enterRoom(roomID,password)
-	WS.send("play","/play",JSON.encode{
-		action=2,
-		data={
-			rid=roomID,
-			conf=dumpBasicConfig(),
-			password=password,
-		}
-	})
+	NET.freshRoom()
 end
 
 local scene={}
@@ -48,15 +31,7 @@ function scene.keyDown(k)
 		end
 	elseif k=="n"then
 		if TIME()-lastCreateRoomTime>26 then
-			WS.send("play",JSON.encode{
-				action=1,
-				data={
-					type=nil,
-					name=(USER.name or"???").."'s room",
-					password=nil,
-					conf=dumpBasicConfig(),
-				}
-			})
+			NET.createRoom()
 			lastCreateRoomTime=TIME()
 		else
 			LOG.print(text.createRoomTooFast,"warn")
@@ -83,7 +58,7 @@ function scene.keyDown(k)
 				LOG.print("Can't enter private room now")
 				return
 			end
-			enterRoom(rooms[selected].id)
+			NET.enterRoom(rooms[selected].id)--,password
 		end
 	end
 end