Created attachment 147885 [details]
stacktrace

To reproduce:
 - download [1] and run it in Chrome with NB integration (I used Chromium 38)
 - start inspect mode
 - click on "Home" link in the left menu

=> all web inspection windows are closed, this exception pops out


[1] http://services.netbeans.org/synergy/server/api/attachment.php?id=140

Cannot reproduce in Chrome 35, only Chromium 38

*** Bug 245750 has been marked as a duplicate of this bug. ***

Tomas, could you please investigate?

I guess David worked on this - or not? Again, I know nothing about this area so not sure how effective it is to let me solve this issue...

This looks to me like a variation of issue 245406 - something broken in dev build of Chrome 38 in WebSockets. I cannot reproduce this in Chrome 36.

*** This bug has been marked as a duplicate of bug 245406 ***

Perhaps not a duplicate, it just happened to me in stable Chrome (v36).

Unexpected character (�) at position 0.
        at org.json.simple.parser.Yylex.yylex(Yylex.java:610)
        at org.json.simple.parser.JSONParser.nextToken(JSONParser.java:269)
        at org.json.simple.parser.JSONParser.parse(JSONParser.java:118)
        at org.json.simple.parser.JSONParser.parse(JSONParser.java:81)
        at org.json.simple.parser.JSONParser.parse(JSONParser.java:75)
        at org.json.simple.JSONValue.parseWithException(JSONValue.java:78)
[catch] at org.netbeans.modules.extbrowser.plugins.Message.parse(Message.java:113)
        at org.netbeans.modules.extbrowser.plugins.ExternalBrowserPlugin$BrowserPluginHandler.read(ExternalBrowserPlugin.java:303)
        at org.netbeans.modules.netserver.websocket.WebSocketHandler7.readDelegate(WebSocketHandler7.java:118)

This is happening to me in Stable now everytime I try and debug.  Looks like Chrome autoupdated to 36 in the background and now I cannot debug again :(

Created attachment 148393 [details]
patch

Per our investigation (me and Tomas), this is likely caused by missing piece of protocol implementation in NB.

The attached patched could solve the issue. Still needs a lot of testing.

*** Bug 245406 has been marked as a duplicate of this bug. ***

Should be fixed now, please verify. Thanks.

http://hg.netbeans.org/web-main/rev/8edb2f4e6e12

PetřeH, thanks a lot for your help!

Integrated into 'main-silver', will be available in build *201407310738* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)

Changeset: http://hg.netbeans.org/main-silver/rev/8edb2f4e6e12
User: Tomas Mysik <tmysik@netbeans.org>
Log: #245410 - Unexpected character (^Q) at position 0. at org.json.simple.parser.Yylex.yylex

The fix seems to be working fine, I tested web inspection/debugging in Chrome 36/Chromium 37/Embedded browser/Mobile Safari/Cordova/Chrome for Android on Linux and Mac and no problems. I've used several builds for testing as they became available: web-main builds 1110 & 1114 and today's trunk build

Verified, thank you


Product Version: NetBeans IDE Dev (Build 201407310738)
Java: 1.7.0_65; Java HotSpot(TM) 64-Bit Server VM 24.65-b04
Runtime: Java(TM) SE Runtime Environment 1.7.0_65-b17
System: Mac OS X version 10.9.4 running on x86_64; UTF-8; en_US (nb)


Product Version: NetBeans IDE Dev (Build 201407310738)
Java: 1.8.0_05; Java HotSpot(TM) Client VM 25.5-b02
Runtime: Java(TM) SE Runtime Environment 1.8.0_05-b13
System: Linux version 3.13.0-32-generic running on i386; UTF-8; en_US (nb)

NetBeans IDE Dev (Build web-main-1114-on-20140731) 
NetBeans IDE Dev (Build web-main-1111-on-20140730)
Chrome 36 Version 36.0.1985.125
Chromium 37 Version 37.0.2062.20 Ubuntu 14.04 (283104)

Good job Petr and Tomas!!

*** Bug 250096 has been marked as a duplicate of this bug. ***