Alter max simultaneous connections from Javascript?

Asked Feb 12 '21 at 21:18

Active Feb 14 '21 at 11:38

Viewed 93 times

I am trying to measure bandwidth from a web page application. I find that I can increase accuracy by initiating more simultaneous downloads (or uploads).

I have seen many answers describing browser built-in limits from about:config - network.http.max-persistent-connections-per-proxy and network.http.max-persistent-connections-per-server (see, for example, Max parallel http connections in a browser? )

I would not want to permanently affect the built-in values shown by about:config. Is there a way for Javascript to change these values for the current browser window? Thanks.

Update: As noted by commenters, there is probably no way to increase the limit. Some speed test sites use multiple servers to establish more simultaneous connections. Thanks!

edited Feb 14 '21 at 11:38

asked Feb 12 '21 at 21:18

richb-hanover

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No, there's no way for the js code in a website to change these, otherwise they wouldn't be limits. – Bergi Feb 12 '21 at 21:21
You want to change the value with no user interaction? That's unlikely to happen. – Heretic Monkey Feb 12 '21 at 21:22
Yeah. I suspected as much. I have seen other speed test programs that launch as many as 30 simultaneous transfers - I need to disassemble their requests... Thanks! – richb-hanover Feb 12 '21 at 22:55
They might be using multiple servers. – Bergi Feb 13 '21 at 09:27
Yes, that seems to be the case. Thanks! – richb-hanover Feb 14 '21 at 11:38

Alter max simultaneous connections from Javascript?

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