Closed Bug 1415859 Opened 3 years ago Closed 3 years ago

Disable speculative HTTP connections in Thunderbird

Categories

(Thunderbird :: Security, enhancement)

56 Branch
enhancement
Not set
normal

Tracking

(Not tracked)

RESOLVED DUPLICATE of bug 1408867

People

(Reporter: dan-bugzilla, Unassigned)

Details

Thunderbird has network.http.speculative-parallel-limit set to 6 by default, which causes an HTTP connection to be opened when you 'mousedown' on a link. No actual request is made in Thunderbird itself (because the link opens externally in your browser), so the connection is unnecessary, and if you're using firewall software (e.g., Little Snitch on macOS) and have Thunderbird restricted to your own mail servers by default then the connection triggers an unnecessary prompt every time you click on a link.

I think it would make sense to change this setting to 0 in Thunderbird, where (unlike in Firefox) it's not providing any benefit and people are more likely to want to use a more restrictive firewall setting.

(This behavior also only started recently, I believe in TB 52.)
Component: Untriaged → Security
Yes, we can set the preference, but most likely that will blow up some tests like we have seen in bug 1408867 were we tried to set pref("network.http.speculative-parallel-limit", 0),

Hey, it's the same bug!!
Status: UNCONFIRMED → RESOLVED
Closed: 3 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1408867
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