【网络通信】心跳探测：半开连接的主动识别

function attackdamage(actor, target)
    setplayvar(actor, "HUMAN", "LAST_ACT", os.time())
end
function addbag(actor, itemName)
    setplayvar(actor, "HUMAN", "LAST_ACT", os.time())
end
function ontimer162(actor)
    local last = tonumber(getplayvar(actor, "HUMAN", "LAST_ACT") or "0")
    if last > 0 and os.time() - last >= 1200 then
        setplayvar(actor, "HUMAN", "GHOST_MARK", 1, 1)
    end
end

local function countAct()
    local v = tonumber(getsysvar("ACT_10MIN") or "0") + 1
    setsysvar("ACT_10MIN", v)
end
setontimerex(161, 600)
function ontimer161()
    local n = grobalinfo(6)
    local act = tonumber(getsysvar("ACT_10MIN") or "0")
    if n > 500 and act / n < 0.05 then
        sendcentermsg("疑似假在线较多，值班请检查网关连接状态")
    end
    setsysvar("ACT_10MIN", 0)
end