pc_tiantian/core/luaScript/Protocol/ProtocolHeart.lua

local Heart = class("Heart" , require("luaScript.Protocol.Protocol"))


local HeartCmd = {

	--[[
	* 心跳包
	* <pre>
	* 请求: {@link HeartBeatRequest}
	* 响应: {@link HeartBeatResponse}
	* </pre>
	--]]
	HEART_BEAT = 0x2008,
}

-- 服务器返回的心跳包
local HeartBeatResponse = defClass("HeartBeatResponse"
	-- 服务器的当前时间，从1970开始的毫秒数
	, defVar("serverTime", VT_Long, 0)
)


-- 每隔多久发一次心跳包
local HeartBeatTime = 5

-- 心跳包多久没有收到就认为超时了
local NetOverTime   = 8;

function Heart:onLoginToUserProtocol()
	
	logD("Heart:onLoginToUserProtocol()")
	
	-- 开始发送心跳包
	self.net.Socket:setOption("HeartBeatCode" , HeartCmd.HEART_BEAT);
	self.net.Socket:setOption("HeartBeatTime" , HeartBeatTime * 1000);
	
	self:resetNetOverTimer();
end

-- 服务器心跳回调
function Heart:onUpdateServerTime(status, response)
	
	logD("Heart:onUpdateServerTime()")
	
	if status ~= 0 then
		print("心跳包返回错误代码 statusCode:" .. tostring(status))
		return;
	end;

	-- 更新
	self.heartBeatResponse = response:updateTo(self.heartBeatResponse);
	self.TimeEclipsed = response.serverTime / 1000;
	self.TimeStart = os.time();
	-- 记录下上次消息时间
	self.LastNetMessageTime = self.TimeStart;
	self:resetNetOverTimer()
end

function Heart:onNetProcessMessage(event)	
	self.LastNetMessageTime = os.time();
end

-- 设置超时定时器
function Heart:resetNetOverTimer()
	logD("Heart:resetNetOverTimer()")
	
	if not tolua.isnull(self.TimeoutAction) then
		app.mainScene:stopAction(self.TimeoutAction);
	end
	self.TimeoutAction = nil;
	self.NeedToReconnect = false;
	
	if app.mainScene then
		local t1 = os.time()

		local function onTimeout()

			logD("Heart:resetNetOverTimer() 心跳超时时间 = ",  os.time())
			logD("Heart:resetNetOverTimer() 误差超时时间 = ",  (os.time()-t1))

			-- 两帧之后，再检查是否有收到消息，如果还没收到，就认为超时
			local lastTime = self.LastNetMessageTime;
			local curTime = os.time();
			local deltaTime = curTime - lastTime;
			logD("Heart:resetNetOverTimer() curTime = ", curTime);
			logD("Heart:resetNetOverTimer() lastTime = ", lastTime);
			logD("Heart:resetNetOverTimer() deltaTime = ", deltaTime);
			
			if deltaTime >= NetOverTime then
				-- 这里不一定是断线了，如果充值的时候，游戏渲染窗口就不渲染了整个游戏就更新了，网络消息也不会触发脚本了
				-- 但是这个时候网络其实是没有断开的
				-- 延迟一帧执行，给一次机会
				local function reconnectToServer()
					if self.NeedToReconnect and not app.user.kickOffState then
						logD("Heart:resetNetOverTimer() 已经[" .. deltaTime .. "]秒没有收到服务器消息了，说明网络有问题，重连咯");
						-- 断开网络后 会自动重连 不需要手动调用reconnect
						self.net:close();
						-- 马上重连
						--self.net:reConnect();
						self.NeedToReconnect = false
					end
				end
				self.NeedToReconnect = true
				runInNextFrame(reconnectToServer)
			else
				-- 说明在定时器期间又收到服务器的消息但没有收到心跳包
				-- 再给一次机会，不要断线
				runInNextFrame(function()
					self:resetNetOverTimer()
				end)
			end
			self.TimeoutAction = nil;
		end
		logD("Heart:resetNetOverTimer() 心跳开始本地时间 = ", t1);
		-- 发完心跳包一段时间后还没有新消息，就说明网络死了
		self.TimeoutAction = app.mainScene:runActions(cc.DelayTime:create(NetOverTime), onTimeout);
	end
end

-- 停止
function Heart:stop()

end

-- 服务器时间（返回秒数）
function Heart:getServerTime()
	local now = os.time()
	local seconds = now - self.TimeStart;
    return math.ceil(self.TimeEclipsed + seconds);
end

-- 服务器时间（日期形式返回）
function Heart:getServerDateTime()
	return BeijingTime.dateFunc(self:getServerTime())
end

--知道已经断开连接停止检测
function Heart:onStopHeart()
	if not tolua.isnull(self.TimeoutAction) then
		app.mainScene:stopAction(self.TimeoutAction);
	end
end

function Heart:ctor(net)
	Heart.super.ctor(self , net);
	self.heartBeatResponse = HeartBeatResponse:new();
	-- 上次心跳包服务器时间
	self.TimeEclipsed = 0;
	-- 上次心跳包客户端时间
	self.TimeStart = 0;
	-- 上次更新消息时间
	self.LastNetMessageTime = 0
	-- 注册网络消息更新事件
	app:addEventListener("onRecvMsgFromGameServer" , handler(self , self.onNetProcessMessage));
	-- 注册登录事件
	app:addEventListener("onGameServerConnected" , handler(self , self.onLoginToUserProtocol));

	app:addEventListener("onGameServerDisConnect" , handler(self , self.onStopHeart));


	-- 注册心跳回调函数
	self:defPullMsg{name = "heartBeat", cmd = HeartCmd.HEART_BEAT , resCmd = HeartCmd.HEART_BEAT, reader = HeartBeatResponse , func = handler(self , self.onUpdateServerTime)};
	self:defPushMsg{cmd = HeartCmd.HEART_BEAT , reader = HeartBeatResponse , func = handler(self , self.onUpdateServerTime)};
end

return Heart;