[AWS Device Farm] Connection issue

[vaibhavsingh97]

config file I'm using

{
  "src_folders": [ //other test paths are added like this
    "tests/case-details/C166468-userWithCountryNullViewCases.js",
    "tests/case-details/C206276-legacyCaseIdShown.js",
    "tests/case-details/C2514-hardwareRepairTypeDetails.js"
  ],
  "page_objects_path": [
    "./page_object"
  ],
  "globals_path": "globals.js",
  "webdriver": {
    "keep_alive": true
  },
  "custom_commands_path": [
    "./lib/custom_commands",
    "./node_modules/nightwatch-xhr/es5/commands"
  ],
  "custom_assertions_path": [
    "./node_modules/nightwatch-xhr/es5/assertions"
  ],
  "test_workers": {
    "enabled": true,
    "workers": 50
  },
  "test_settings": {
    "default": {
      "deviceFarmProject": "55c7ab9b-bfb8-48f6-918d-16001de636a9",
      "selenium": {
        "start_process": false,
        "host": "testgrid-devicefarm.us-west-2.amazonaws.com",
        "default_path_prefix": "/AQICAHiRxhO-PGIRztfuyZnEOnPbRAM8ftJRJWoP00xHm3SX=/wd/hub",
        "port": 443
      },
      "skip_testcases_on_fail": false,
      "parallel_process_delay": 100,
      "silent": true,
      "exclude": [
        "tests/*sample*.js"
      ],
      "request_timeout_options": {
        "timeout": 180000,
        "retry_attempts": 2
      },
      "output_folder": "./reports",
      "end_session_on_fail": false,
      "desiredCapabilities": {
        "browserName": "chrome"
      }
    }
  },
  "live_output": true,
  "detailed_output": true,
  "test_runner": {
    "type": "default",
    "options": {
      "bail": false,
      "retries": 0
    }
  }
}

Some tests are not connecting to the grid and throw this error
⚠ Failed to connect to Selenium Server on testgrid-devicefarm.us-west-2.amazonaws.com with port 443.

Originally posted by @mostmentor in #3094 (comment)

[vaibhavsingh97]

@mostmentor Please use the following nightwatch.conf.js, you will not face a connection issues.

var AWS = require('aws-sdk');

const PROJECT_ARN = '<arn:aws:devicefarm:us-west-2:XXXXXXX:testgrid-project:xxxxxxxxxxxx>';
const devicefarm = new AWS.DeviceFarm({region: 'us-west-2'});

const getAwsGridURL = async () => {

  // Get the endpoint to create a new session
  const testGridUrlResult = await devicefarm.createTestGridUrl({
    projectArn: PROJECT_ARN,
    expiresInSeconds: 600
  }).promise();
    
  return testGridUrlResult.url;

};

const settings = getAwsGridURL().then((aws_grid) => {
  const AWS_GRID = new URL(aws_grid);

  return {  
    test_settings: {
      default: {
        selenium: {
          'start_process': false,
          'host': AWS_GRID.host,
          'default_path_prefix': AWS_GRID.pathname,
          'port': 443
        },
    
        'desiredCapabilities': {
          'browserName': 'chrome'
        }
      },
    }
  };
});


module.exports = new Promise(resolve => {
  resolve(settings);
});

[mostmentor]

Thanks for providing this. I've got same error Response

500 POST https://testgrid-devicefarm.us-west-2.amazonaws.com/xxx=/wd/hub/session (1534ms) 
 { 
      value: { 
        error: 'session not created'
        message: 'Cannot exceed 50 concurrent sessions. Currently active=48, pending=2, failed=0'
      } 
   } 
Failed to connect to Selenium Server on testgrid-devicefarm.us-west-2.amazonaws.com with port 443. 

[swrdfish]

This seems to be a limitation of device farm itself https://docs.aws.amazon.com/devicefarm/latest/testgrid/techref-limits.html.

This error message comes from device farm and has nothing to do with nightwatch or selenium.