-- client side:

addEventHandler("onClientGUIClick",myButton,
function ()
   triggerServerEvent("redirectClient",localPlayer)
end, false)

-- server side:

local ip = "127.0.0.1"
local port = "22003"

addEvent("redirectClient",true)
addEventHandler("redirectClient",root,
function ()
redirectPlayer(source, ip, tonumber(port))
end)