double invocation of normal inclusion surrogates

[al_9x]

Fx 7.0, NS 2.1.3, new profile

runs the first time before the @ surrogate:

test page:

Code: Select all

<script src="http://domain.invalid/"></script>

surrogates:

Code: Select all

noscript.surrogate.normal.sources=*
noscript.surrogate.normal.replacement=console.log('normal surrogate');

noscript.surrogate.@.sources=@*
noscript.surrogate.@.replacement=console.log('@ surrogate');

console log:

Code: Select all

[05:56:03.622] normal surrogate @ chrome://noscript/content/ScriptSurrogate.js:193
[05:56:03.627] @ surrogate @ http://localhost/tests/surrogates/normal-simple.htm:10
[05:56:03.631] normal surrogate @ http://localhost/tests/surrogates/normal-simple.htm

the log seems to be indicating that the first invocation is from chrome

[Giorgio Maone]

Looks like an artifact of Gecko's speculative loading. Investigating, thanks.

[Giorgio Maone]

Should be fixed in latest development build 2.1.4rc2

[al_9x]

Should be fixed in latest development build 2.1.4rc2

So what was going on there? What is this speculative parsing? Is gecko querying the policy twice about the same script? Why?

[Giorgio Maone]

Should be fixed in latest development build 2.1.4rc2

So what was going on there? What is this speculative parsing?

Recent Gecko versions try to parallelize external resources preloading, starting the loads as soon as their URLs can be seen in the response stream and independently from DOM building.

Is gecko querying the policy twice about the same script? Why?

Yes, it is. Once when the load is about to start (which generally happens before the script DOM element exists - in fact, the document itself is passed as aContext) and once when the DOM element is created (even if at that time the load may have already been vetoed by the previous call).