setDiscoverTargets is not allowed for chrome extension

Question

I am trying to develop a chrome extension and in this extension, I need the target related events (targetCreated/targetInfoChanged/targetDestroyed).

To achieve that goal I am using setDiscoverTargets method from the devtools protocol by means of chrome.debugger API. Here is the pseudocode that I am using:

   // attach the debugger 
    
        chrome.debugger.attach(debuggeeId, version, onAttach);
    
    // when attach is successful send setAuthAttach to make setDiscoverTargets command work
        const onAttach = (debuggeeId) => {
            if (chrome.runtime.lastError) {
                alert(chrome.runtime.lastError.message);
                return;
            }
            console.log(`onAttach: ${JSON.stringify(debuggeeId)}`);
            chrome.debugger.sendCommand({ tabId: myTabId }, "Target.setAutoAttach", { autoAttach: false, waitForDebuggerOnStart: false, flatten: true }, setAutoAttachHandler);
        }

// when auto attach handler is successful send setDiscoverTargets method      
// to enable targetCreated/targetInfoChanged/targetDestroyed events

        const setAutoAttachHandler = (result) => {
           if (chrome.runtime.lastError) {
               console.log("error in setAutoAttachHandler:" + chrome.runtime.lastError.message);
               return;
           }
           console.log(`setAutoAttachHandler result: ${JSON.stringify(result)}`);

            chrome.debugger.sendCommand({ tabId: myTabId }, 'Target.setDiscoverTargets', { discover: true }, setDiscoverTargetsHandler);
        }

    // see the result of command 
        const setDiscoverTargetsHandler = (result) => {
            if (chrome.runtime.lastError) {
                console.log("error in setDiscoverTargetsHandler:" + chrome.runtime.lastError.message);
                return;
            }
            console.log(`setDiscoverTargets result: ${JSON.stringify(result)}`);
        }

As per execute the code above I am always getting not allowed error

error in setDiscoverTargetsHandler:{"code":-32000,"message":"Not allowed"}

And the events related to the target are not fired. Is there anything else I should do to get those events?

thank you.

question from:https://stackoverflow.com/questions/65540994/setdiscovertargets-is-not-allowed-for-chrome-extension

Answer 1

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