Error creating new page in browser context

k6-browser
1

Hello,

I’m having trouble getting a browser test to work. I am running k6 through Docker and have the following Dockerfile:

FROM grafana/k6:latest
USER root

RUN apk update && apk add --no-cache chromium
...
ENV K6_BROWSER_ENABLED=true
ENV LOAD_TEST_TARGET_VU_COUNT=1
ENV LOAD_TEST_SECRET_SEED=1

Here is my test script:

import { sleep, check } from "k6";
import { Rate } from "k6/metrics";
import { chromium } from "k6/experimental/browser";

export const errorRate = new Rate("errors");

export default async function () {
  const browser = chromium.launch({
    args: ["no-sandbox"],
    ignoreDefaultArgs: ["enable-automation"],
    headless: true,
    timeout: "60s", // Or whatever time you want to define
  });
  console.log("🚀launching browser");

  // I've tried using an explicit context resulting in a similar error 
  // const context = browser.newContext();
  // // const page = context.newPage();

  const page = browser.newPage();
  console.log("✨new page");

  try {
    await page.goto("https://somepage.com/login");
    let submitButton = page.locator('input[type="submit"]');
    ...
  } finally {
    page.screenshot({ path: "screenshot.png" });

    page.close();
    browser.close();
  }

  check(true, {
    "status is 200": () => true,
  }) || errorRate.add(1);
  sleep(1);
}

How I build and run the image:

docker build -t browser-k6 -f ./load-test/Dockerfile .
docker run --rm --network="host" -i browser-k6 run - <./load-test/src/test.js

Error:

time="2023-05-08T14:19:04Z" level=error msg="communicating with browser: websocket: close 1006 (abnormal closure): unexpected EOF" category=cdp elapsed="0 ms" goroutine=56
time="2023-05-08T14:19:04Z" level=error msg="process with PID 17 unexpectedly ended: signal: trace/breakpoint trap" category=browser elapsed="6 ms" goroutine=86
time="2023-05-08T14:19:04Z" level=error msg="Uncaught (in promise) GoError: creating new page in browser context: canceled\n\tat github.com/grafana/xk6-browser/browser.mapBrowser.func3 (native)\n\tat file:///-:49:15(26)\n" executor=per-vu-iterations scenario=default

Error when using explicit context:

time="2023-05-08T14:30:00Z" level=error msg="communicating with browser: read tcp 127.0.0.1:57700->127.0.0.1:33765: read: connection reset by peer" category=cdp elapsed="0 ms" goroutine=82
time="2023-05-08T14:30:00Z" level=error msg="process with PID 17 unexpectedly ended: signal: trace/breakpoint trap" category=browser elapsed="5 ms" goroutine=70
time="2023-05-08T14:30:00Z" level=error msg="Uncaught (in promise) GoError: creating new page in browser context: creating a new blank page: read tcp 127.0.0.1:57700->127.0.0.1:33765: read: connection reset by peer\n\tat github.com/grafana/xk6-browser/browser.mapBrowserContext.func4 (native)\n\tat file:///-:48:15(30)\n" executor=per-vu-iterations scenario=default

I’m enjoying using k6, thank you for all your hard work on the library and community. Thank you also for your help ahead of time.

2

Hi @urmit,

Welcome to the forum :wave:

Are you running this on an M series Apple computer (ARM architecture)? I’ve ran into the same issue on my Mac. grafana/k6:latest image is currently only built for amd64.

This dockerfile (which is part of the xk6-browser repo) works for me:

FROM golang:1.19-bullseye as builder

RUN go install -trimpath go.k6.io/xk6/cmd/xk6@latest

RUN  xk6 build --output "/tmp/k6" --with github.com/grafana/xk6-browser

FROM debian:bullseye

RUN apt-get update && \
    apt-get install -y chromium

COPY --from=builder /tmp/k6 /usr/bin/k6

ENV XK6_HEADLESS=true
ENV K6_BROWSER_ENABLED=true

ENTRYPOINT ["k6"]

Let me know if that works for you or not.

Cheers,
Ankur

3

Hey @ankur,

Thanks for your quick response. This was a huge help and it works great

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