jeanvst said

In about:config I changed "network.http.max-persistent-connections-per-server" from 6 to 1, but sniffing with Wireshark I can still see 2 simultaneous connections.

Hi  !

Just to make sure : after you changed the value of that preference, did you close and then restart Firefox  ?

Happy112 said

jeanvst said

In about:config I changed "network.http.max-persistent-connections-per-server" from 6 to 1, but sniffing with Wireshark I can still see 2 simultaneous connections.

Hi  !

Just to make sure : after you changed the value of that preference, did you close and then restart Firefox  ?

Hi, thanks for the reply.

I did restart Firefox. There was some effect on the configuration, since the first capture showed 6 connections, and after the change, 2 connections.

I repeated the test today and got an interesting (or weird?) result. If the destination address is on LAN (eg 192.168.1.x), Firefox opens a single connection as desired. If the destination is on WAN (eg 200.x.x.x), Firefox opens 2 connections.

Is there any other parameter I should change?

In the following article, could you expand the Prefetching section and disable:

• Link prefetching
• Speculative pre-connections

How to stop Firefox from making automatic connections

jscher2000 said

In the following article, could you expand the Prefetching section and disable:

• Link prefetching
• Speculative pre-connections

How to stop Firefox from making automatic connections

As suggested, I did the following changes: - network.prefetch-next = false - network.dns.disablePrefetch = true - network.http.speculative-parallel-limit = 0

However, Firefox is still making 2 connections.

If you do not get an explanation here, you may want to file a bug.

https://bugzilla.mozilla.org/enter_bug.cgi