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Protocol filtering breaks websockets after update at 5/05/2016


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After update at 5/05/2016 many users of my webchat met problem: websockets ceased to work.

 

How to reproduce this bug:

1. Turn Protocol filtering off (at Web and Email section of advanced config)

2. Open hxxp://websocketstest.com/and ensure everything works ok

3. Turn Protocol filtering on again

4. Refresh hxxp://websocketstest.com/and all websocket connections (except SSL) will fail.

 

If I add remote server's IP-address or application to protocol filtering exceptions or turn protocol filtering off - websockets will work again.

 

Please fix this bug because it's weird. In versions before 5/05/2016 everithing worked OK. Thanks.

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We have found this to be an issue as well on multiple Windows 10 machines. Sample result from websocketstest: hxxp://websocketstest.com/result/756727

 

Windows 7 is affected too. Tried on clean VirtualBox machine (Windows 7 + Google Chrome + windows updates + trial ESET Smart Security).

 

 

We just found the issue on Windows 8.1 as well

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The issue will be fixed in the Internet protection module 1252 soon. I'd strongly suggest using pre-release update servers on non-critical computers so that if a module update breaks something, you can report it to us and switch to regular updates until a fix is available.

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Websockets are also broken when using NOD32 Antivirus v9 (9.0.375.1).

When disabling protocol filtering (in advanced section - web and email, as suggested above) all seems to work fine.

 

Antivirus v8 (at least 8.0.319.1) does not seem to be affected by this.

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I am having the same issue on Windows 10 Nod32 version 9.0.375.0

 

Please post the information about installed modules as this should not be a problem any more.

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