function sanitize(str)
    local replacements = {
        ['<'] = '',
        ['>'] = ''
    }

    return str:gsub('[<>]', replacements)
end

AddEventHandler('playerConnecting', function(name, setCallback, deferral)
    deferrals.defer()
    Citizen.Wait(300)

    local sanitizedName, invalidChars = sanitize(name)

    if name == sanitizedName then
        deferrals.done()
    else
        -- ban player
        deferrals.done('OneSync is not whitelisted for this server, or requesting whitelist status failed. You\'ll have to wait a little while longer!')
    end
end)