Added upload test and autonegotiation of the test size about speedtest

[fgroupindonesia]

Great christ,...
waw....download & upload functionallities are here....!

i got this error

Begin to negotiate download size...
5000mb.bin?1592634296156:1 Failed to load resource: the server responded with a status of 404 (Not Found)
bandwithTest.html:1 Uncaught (in promise) Event

the code is quite amaze me as well....
5 GB is quite big. Isn't enough for just 5MB instead of 5GB?

[perryflynn]

I think you need at least 500 MByte. But it depends on the server and the user bandwidth. I just wanted to make sure that there is enough test data for the most of the users. I think 50MBit or 100MBit connections are quite normal (at least in Europe) now.

Here is a example from my connection:

I've added a PHP script which can be used as a upload endpoint und there is now a config inside of the index.html. So you can configure some things.