Resource retreival

local path = yourBaseRemoteURL

local init = coroutine.create(
    function(items, downloader)
        local total = #items
        local item = table.remove(items)
        while item do
            network.download(path..item, "GET", downloader, item)
        end
        repeat
            table.insert(coroutine.yield())
        until items[#total]
        -- process collected resources
    end
)

local function downloadProcessor(outcome)
    if outcome.isError then
        local item = outcome.response
        network.download(path..item, "GET", downloadProcessor, item)
    else
        coroutine.resume(init, event.response)
    end
end

assert(coroutine.resume(init, {"file1.json", "file2.html"}, downloadProcessor))