Resume on error

[dennis-tra]

Hey there,

I'm using the phantomas docker image to gather metrics about website performance in the following way:

docker run --network=host --privileged macbre/phantomas:latest /opt/phantomas/bin/phantomas.js --timeout=60s --url "https://website.com"

For this specific website, it sometimes works. But often receive:

Error: Navigation failed because browser has disconnected!
/opt/phantomas/bin/phantomas.js:50
    debug("Metrics: %j", results.getMetrics());
                                 ^

TypeError: Cannot read properties of undefined (reading 'getMetrics')
    at /opt/phantomas/bin/phantomas.js:50:34

Node.js v18.13.0

or

Error: HTTP response code from <https://website.com/fonts/vendor/jost/jost-v4-latin-regular.woff2> is 404
/opt/phantomas/bin/phantomas.js:50
    debug("Metrics: %j", results.getMetrics());
                                 ^

TypeError: Cannot read properties of undefined (reading 'getMetrics')
    at /opt/phantomas/bin/phantomas.js:50:34

Node.js v18.13.0

After reviewing the website, error message, and phantomas code, I discovered that the fonts were unable to load. As a result, phantomas came to a halt and stopped functioning altogether. I think that's the relevant code part:

phantomas/lib/index.js

Lines 146 to 167 in 1a7fb52

	var firstResponseReceived = false;
	events.once("recv", async (entry) => {
	if (!firstResponseReceived && entry.status >= 400) {
	debug(
	"<%s> response code is HTTP %d %s",
	entry.url,
	entry.status,
	entry.statusText
	);
	// close the browser before leaving here, otherwise subsequent instances will have problems
	await browser.close();
	reject(
	new Error(
	"HTTP response code from <" + entry.url + "> is " + entry.status
	)
	);
	}
	firstResponseReceived = true;
	});

We can fix the error of a dead link to font resources, but can we configure phantomas to ignore such errors and resume the measurement?