Middleware

The middleware feature allows you to run functions before or after something happens. For example, the Throttle middleware runs before the internal Listen code is ran and will throttle the event with your code.

Usage

There are 2 different types of middleware. These are Throttle and Dropped. Throttle runs before Listen or OnRequest, and Dropped runs when the packet is dropped due to invalid types or NaN.

local Net = require(Packages.net).Server
local MyEvent = Net.Event("MyEvent")

MyEvent:SetMiddleware({
    Throttle = function()
        if math.random(1, 2) == 1 then
            print("I randomly decided to throttle.")
            return false -- Returning false indicates that the event/async should throttle
        end
        return true
    end,

    Dropped = function(sender)
        print(sender.Name, "sent the incorrect value from the client!")
    end,
})

MyEvent:Listen(function()
    print("Might print depending on the throttle middleware.")
end)

Dropped middleware is explained further in the type validation article.