For any future readers;
I went back to trying to build a debug v8 set of libs (wouldnt compile 
before, added is_component_build=false which I think fixed that)
Built with latest master (4544e18b0c3845a9fca422cf0903df4803343cf1) 

Which forced me to correct a few uses of deprecated functions, including v8
::String::NewFromUtf8() with no isolate, so *possibly* that was the source 
of the crash re: scriptorigin. I now get an origin in CDT (kinda, it still 
breaks in a VMXX file)

Then asserts as before in "code that should never be reached" (see earlier 
in the thread)

[image: Screen Shot 2018-09-13 at 17.08.09.png]



On Wednesday, 12 September 2018 17:34:30 UTC+1, @soylentgraham wrote:
>
> With a lot of back & forth help from Ibon/hyperandroid, we've got a bit 
> further in working out which things are good, and which are bad. 
> Feels like we're close, but things are still unstable, and a bit 
> unresponsive.
>
> I can kinda break into the code (which only shows *this *in sources)
> Still get the assert above from trying to autocomplete too many times. 
> (albeit after a RunMessageLoop callback now)
> And if I add a script origin, I get a crash trying to stacktrace 
> (immediately when connecting, still trying to figure this out, as my 
> scriptorigin is okay)
>
> More stripped back version here (cutting more dependencies out, but all my 
> setup, inspector, frontend, messaging is in v8minimal.cpp)
> https://github.com/SoylentGraham/V8InspectorMinimal
>
> On Monday, 27 August 2018 13:49:37 UTC+1, @soylentgraham wrote:
>>
>> Through various sources (ie, googling & github) I've finally got a bit of 
>> a grasp of the flow for connecting chrome dev tools to my v8 app. (which is 
>> using a pretty recent HEAD build I've built myself with all default 
>> settings other than compiling as a static lib[s]. v8-version.h says 7.0.0.0)
>>
>> I connect via an explicit url (can't quite get json/list/ to show up in 
>> chrome yet)
>> *chrome-devtools://devtools/bundled/inspector.html?experiments=true&v8only=true&ws=127.0.0.1:8008
>>  
>> <http://127.0.0.1:8008>*
>> (Not sure how relevant the v8only=true and experiments=true are, couldn't 
>> find any documentation on this)
>>
>> This connects to my websocket, and I pass all messages straight to 
>> *Session->dispatchProtocolMessage*
>>
>> My channel then gets *sendResponse's* in return, which I send back to 
>> chrome over my websocket.
>>
>> Chrome dev tools shows essentially an empty debugger, no sources, no 
>> console output, no errors...
>>
>> The responses my isolate/context sends back, suggest maybe I have some JS 
>> symbols/modules missing, which maybe I need to implement?
>> I'm kinda assuming this, as the debugger. methods succeed, but things 
>> like *Inspector.enable* (which I haven't found anyone implementing, but 
>> some people are implementing Inspector objects, just with different 
>> methods) fail
>>
>> *Chrome tools message: {"id":16,"method":"Inspector.enable"}*
>>
>> *Channel response: {"error":{"code":-32601,"message":"'Inspector.enable' 
>> wasn't found"},"id":16}*
>> Is this why chrome isn't proceeding with anything?
>> Am I supposed to implement these, or perhaps are they missing from my 
>> native blobs when I built my v8 libraries?
>>
>> My overloads of the inspector client functions like 
>> *runMessageLoopOnPause* aren't being called, but I assume that's just 
>> because I haven't gotten to any stage where commands are being evaluated?
>>
>> Below is what I get when I connect chrome, but then it just sits there :)
>>
>> Thanks for any pointers in the right direction!
>>
>> *Chrome tools message: 
>> {"id":1,"method":"Network.enable","params":{"maxPostDataSize":65536}}*
>>
>> *Channel response: {"error":{"code":-32601,"message":"'Network.enable' 
>> wasn't found"},"id":1}*
>>
>> *Chrome tools message: {"id":2,"method":"Page.enable"}*
>>
>> *Channel response: {"error":{"code":-32601,"message":"'Page.enable' 
>> wasn't found"},"id":2}*
>>
>> *Chrome tools message: {"id":3,"method":"Page.getResourceTree"}*
>>
>> *Chrome tools message: {"id":4,"method":"Profiler.enable"}*
>>
>> *Channel response: 
>> {"error":{"code":-32601,"message":"'Page.getResourceTree' wasn't 
>> found"},"id":3}*
>>
>> *Channel response: {"id":4,"result":{}}*
>>
>> *Chrome tools message: {"id":5,"method":"Runtime.enable"}*
>>
>> *Channel response: 
>> {"method":"Runtime.executionContextCreated","params":{"context":{"id":1,"origin":"","name":"PopEngineContextName"}}}*
>>
>> *Channel response: {"id":5,"result":{}}*
>>
>> *Chrome tools message: {"id":6,"method":"Debugger.enable"}*
>>
>> *Channel response: 
>> {"method":"Debugger.scriptParsed","params":{"scriptId":"9","url":"","startLine":0,"startColumn":0,"endLine":1,"endColumn":0,"executionContextId":1,"hash":"2a70962568dbbde00fb323decd63c2ca137b304c","isLiveEdit":false,"sourceMapURL":"","hasSourceURL":false,"isModule":false,"length":17}}*
>>
>> *Channel response: 
>> {"id":6,"result":{"debuggerId":"(6B1A58050CBFAE70E5B41C5556E5520D)"}}*
>>
>> *Chrome tools message: 
>> {"id":7,"method":"Debugger.setPauseOnExceptions","params":{"state":"uncaught"}}*
>>
>> *Channel response: {"id":7,"result":{}}*
>>
>> *Chrome tools message: 
>> {"id":8,"method":"Debugger.setAsyncCallStackDepth","params":{"maxDepth":32}}*
>>
>> *Channel response: {"id":8,"result":{}}*
>>
>> *Chrome tools message: {"id":9,"method":"DOM.enable"}*
>>
>> *Channel response: {"error":{"code":-32601,"message":"'DOM.enable' wasn't 
>> found"},"id":9}*
>>
>> *Chrome tools message: {"id":10,"method":"CSS.enable"}*
>>
>> *Channel response: {"error":{"code":-32601,"message":"'CSS.enable' wasn't 
>> found"},"id":10}*
>>
>> *Chrome tools message: {"id":11,"method":"Overlay.enable"}*
>>
>> *Channel response: {"error":{"code":-32601,"message":"'Overlay.enable' 
>> wasn't found"},"id":11}*
>>
>> *Chrome tools message: 
>> {"id":12,"method":"Overlay.setShowViewportSizeOnResize","params":{"show":true}}*
>>
>> *Channel response: 
>> {"error":{"code":-32601,"message":"'Overlay.setShowViewportSizeOnResize' 
>> wasn't found"},"id":12}*
>>
>> *Chrome tools message: {"id":13,"method":"Log.enable"}*
>>
>> *Channel response: {"error":{"code":-32601,"message":"'Log.enable' wasn't 
>> found"},"id":13}*
>>
>> *Chrome tools message: 
>> {"id":14,"method":"Log.startViolationsReport","params":{"config":[{"name":"longTask","threshold":200},{"name":"longLayout","threshold":30},{"name":"blockedEvent","threshold":100},{"name":"blockedParser","threshold":-1},{"name":"handler","threshold":150},{"name":"recurringHandler","threshold":50},{"name":"discouragedAPIUse","threshold":-1}]}}*
>>
>> *Channel response: 
>> {"error":{"code":-32601,"message":"'Log.startViolationsReport' wasn't 
>> found"},"id":14}*
>>
>> *Chrome tools message: {"id":15,"method":"ServiceWorker.enable"}*
>>
>> *Channel response: 
>> {"error":{"code":-32601,"message":"'ServiceWorker.enable' wasn't 
>> found"},"id":15}*
>>
>> *Chrome tools message: {"id":16,"method":"Inspector.enable"}*
>>
>> *Channel response: {"error":{"code":-32601,"message":"'Inspector.enable' 
>> wasn't found"},"id":16}*
>>
>> *Chrome tools message: 
>> {"id":17,"method":"Target.setAutoAttach","params":{"autoAttach":true,"waitForDebuggerOnStart":true}}*
>>
>> *Channel response: 
>> {"error":{"code":-32601,"message":"'Target.setAutoAttach' wasn't 
>> found"},"id":17}*
>>
>> *Chrome tools message: 
>> {"id":18,"method":"Target.setDiscoverTargets","params":{"discover":true}}*
>>
>> *Channel response: 
>> {"error":{"code":-32601,"message":"'Target.setDiscoverTargets' wasn't 
>> found"},"id":18}*
>>
>> *Chrome tools message: 
>> {"id":19,"method":"Target.setRemoteLocations","params":{"locations":[{"host":"localhost","port":9229}]}}*
>>
>> *Channel response: 
>> {"error":{"code":-32601,"message":"'Target.setRemoteLocations' wasn't 
>> found"},"id":19}*
>>
>> *Chrome tools message: 
>> {"id":20,"method":"Debugger.setBlackboxPatterns","params":{"patterns":["/main\\.js\\b"]}}*
>>
>> *Channel response: {"id":20,"result":{}}*
>>
>> *Chrome tools message: 
>> {"id":21,"method":"Page.getNavigationHistory","params":{}}*
>>
>> *Channel response: 
>> {"error":{"code":-32601,"message":"'Page.getNavigationHistory' wasn't 
>> found"},"id":21}*
>>
>>
>>

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