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August 5th, 2016, 08:17 AM
#1
Problem with Firefox update n. 48.0
Hi,
since yesterday's Firefox update to version 48.0 my client libraries (JS) stopped working.
The error we get back is:
Error: Permission denied to access property "LS_e"
Client library version: 5.0 (JavaScript)
I found out from the forum that the problem could be caused by domain / host setup, but I think we have the correct setup:
domain: *****.org
LS_Host: push.*****.org
Can the problem be caused by a bug in Firefox update?
Any ideas?
Thank you
Last edited by enrico; August 5th, 2016 at 09:58 AM.
Reason: added library type
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August 9th, 2016, 12:14 PM
#2
Hi enrico,
I confirm that we are investigating the issue directly in touch via support.
Regards,
Giuseppe
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August 11th, 2016, 10:20 AM
#3
I can confirm that the issue is due to an unusual behavior introduced by Firefox 48.0 that concerns document.domain set on iframe/parent when coming from different ports.
The behavior is also explained here: https://bugzilla.mozilla.org/show_bug.cgi?id=1292522 .
In case of Lightstreamer client lib 5 (or lower) the only workaround viable is to uniform the port number between web and lighstreamer servers.
I also confirm that JavaScript library 6 or newer is not affected by the problem since totally different techniques are used.
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