Issue connecting to https://playwright.microsoft.com/ web sockets

[sylvesteraswin]

Hello,

I am trying to use https://playwright.microsoft.com/ for a project. The intension is to connect to cloud browser instance using a web socket url. I am unable to use this feature due to the below error message

Error message

WebSocket error: wss://browser.playwright.microsoft.com/ws 400 Bad Request
The browser that was requested, 'undefined', is not supported. Supported values are 'chromium', 'firefox', and 'webkit'.

The region and service id for this test run are : westeurope, 19da2b05-137f-4303-9b5f-db0cd22a80f0


=========================== logs ===========================
<ws connecting> wss://westeurope.api.playwright.microsoft.com/api/authorize/connectSession
<ws error> wss://westeurope.api.playwright.microsoft.com/api/authorize/connectSession error WebSocket was closed before the connection was established
<ws connect error> wss://westeurope.api.playwright.microsoft.com/api/authorize/connectSession WebSocket was closed before the connection was established
<ws disconnected> wss://westeurope.api.playwright.microsoft.com/api/authorize/connectSession code=1006 reason=
<ws connecting> wss://browser.playwright.microsoft.com/ws
<ws unexpected response> wss://browser.playwright.microsoft.com/ws 400 Bad Request
The browser that was requested, 'undefined', is not supported. Supported values are 'chromium', 'firefox', and 'webkit'.

The region and service id for this test run are : westeurope, 19da2b05-137f-4303-9b5f-db0cd22a80f0


<ws error> wss://browser.playwright.microsoft.com/ws error WebSocket was closed before the connection was established
<ws connect error> wss://browser.playwright.microsoft.com/ws WebSocket was closed before the connection was established
<ws disconnected> wss://browser.playwright.microsoft.com/ws code=1006 reason=
============================================================

Sample code

pw, err := playwright.Run()
if err != nil {
    return "", err
}
defer pw.Stop()


// // Start a browser server
browser, err := pw.Chromium.Connect(browserInstanceUrl, browserInstanceOptions)
if err != nil {
    return "", err
}
defer browser.Close()

[canstand]

I don't have a service instance to test with. But in the sample code, the authentication header is not set before connecting. Could this be the reason?

[musticode]

I have the same problem in my case, I tried to convert this code;
found in documentation : https://github.com/microsoft/playwright-testing-service/blob/main/samples/get-started/playwright.service.config.ts

  use: {
    // Specify the service endpoint.
    connectOptions: {
      wsEndpoint: `${process.env.PLAYWRIGHT_SERVICE_URL}?cap=${JSON.stringify({
        // Can be 'linux' or 'windows'.
        os,
        runId: process.env.PLAYWRIGHT_SERVICE_RUN_ID
      })}`,
      timeout: 30000,
      headers: {
        'x-mpt-access-key': process.env.PLAYWRIGHT_SERVICE_ACCESS_TOKEN!
      },
      // Allow service to access the localhost.
      exposeNetwork: '<loopback>'
    }
  }

I am writing test in java, so this code is worked for me

  String os = "windows"; // Set OS here, can be 'linux' or 'windows'
  String runId = System.getenv("PLAYWRIGHT_SERVICE_RUN_ID");

  String wsEndpoint = wssEndpoint + "?cap=" + String.format("{\"os\":\"%s\",\"runId\":\"%s\"}", os, runId);

      BrowserType.ConnectOptions connectOptions = new BrowserType.ConnectOptions()
              .setHeaders(Map.of(
                      "x-mpt-access-key", apiKey
              ))
              .setTimeout(30000)
              .setExposeNetwork("<loopback>");

      Browser browser = playwright.chromium().connect(wsEndpoint, connectOptions);

• wssEndpoint : Generated by playwright service in azure. Can be like : "wss://eastus.api.playwright.microsoft.com/api/authorize/connectSession
• apiKey : your api key in generated in playwright service