nightwatch: Error retrieving a new session (UnsupportedCommandException) when using start_process: true

When automatically starting Selenium using start_process: true I get this error.

$ node node_modules/nightwatch/bin/runner.js --verbose
Starting selenium server... started - PID:  29749

[Google] Test Suite
===================

Running:  Visit Google
INFO Request: POST /wd/hub/session 
 - data:  {"desiredCapabilities":{"browserName":"firefox","javascriptEnabled":true,"acceptSslCerts":true,"platform":"ANY","name":"Google"}} 
 - headers:  {"Content-Type":"application/json; charset=utf-8","Content-Length":129}
ERROR Response 500 POST /wd/hub/session{ sessionId: null,
  status: 13,
  state: 'unhandled error',
  value: 
   { message: 'Bad request\nCommand duration or timeout: 107 milliseconds\nBuild info: version: \'2.45.0\', revision: \'5017cb8\', time: \'2015-02-26 23:59:50\'\nSystem info: host: \'reaver\', ip: \'127.0.0.1\', os.name: \'Linux\', os.arch: \'amd64\', os.version: \'4.0.4-1-ARCH\', java.version: \'1.7.0_79\'\nDriver info: org.openqa.selenium.firefox.FirefoxDriver',
     suppressed: [],
     localizedMessage: 'Bad request\nCommand duration or timeout: 107 milliseconds\nBuild info: version: \'2.45.0\', revision: \'5017cb8\', time: \'2015-02-26 23:59:50\'\nSystem info: host: \'reaver\', ip: \'127.0.0.1\', os.name: \'Linux\', os.arch: \'amd64\', os.version: \'4.0.4-1-ARCH\', java.version: \'1.7.0_79\'\nDriver info: org.openqa.selenium.firefox.FirefoxDriver',
     buildInformation: 
      { releaseLabel: '2.45.0',
        buildTime: '2015-02-26 23:59:50',
        class: 'org.openqa.selenium.internal.BuildInfo',
        buildRevision: '5017cb8',
        hCode: 167058406 },
     cause: null,
     systemInformation: 'System info: host: \'reaver\', ip: \'127.0.0.1\', os.name: \'Linux\', os.arch: \'amd64\', os.version: \'4.0.4-1-ARCH\', java.version: \'1.7.0_79\'',
     supportUrl: null,
     class: 'org.openqa.selenium.UnsupportedCommandException',
     additionalInformation: '\nDriver info: org.openqa.selenium.firefox.FirefoxDriver',
     hCode: 401822801,
     screen: null },
  class: 'org.openqa.selenium.remote.Response',
  hCode: 1453360085 }

Error retrieving a new session from the selenium server
{ sessionId: null,
  status: 13,
  state: 'unhandled error',
  value: 
   { buildInformation: 
      { releaseLabel: '2.45.0',
        buildTime: '2015-02-26 23:59:50',
        class: 'org.openqa.selenium.internal.BuildInfo',
        buildRevision: '5017cb8',
        hCode: 167058406 },
     localizedMessage: 'Bad request\nCommand duration or timeout: 107 milliseconds\nBuild info: version: \'2.45.0\', revision: \'5017cb8\', time: \'2015-02-26 23:59:50\'\nSystem info: host: \'reaver\', ip: \'127.0.0.1\', os.name: \'Linux\', os.arch: \'amd64\', os.version: \'4.0.4-1-ARCH\', java.version: \'1.7.0_79\'\nDriver info: org.openqa.selenium.firefox.FirefoxDriver',
     cause: null,
     message: 'Bad request\nCommand duration or timeout: 107 milliseconds\nBuild info: version: \'2.45.0\', revision: \'5017cb8\', time: \'2015-02-26 23:59:50\'\nSystem info: host: \'reaver\', ip: \'127.0.0.1\', os.name: \'Linux\', os.arch: \'amd64\', os.version: \'4.0.4-1-ARCH\', java.version: \'1.7.0_79\'\nDriver info: org.openqa.selenium.firefox.FirefoxDriver',
     systemInformation: 'System info: host: \'reaver\', ip: \'127.0.0.1\', os.name: \'Linux\', os.arch: \'amd64\', os.version: \'4.0.4-1-ARCH\', java.version: \'1.7.0_79\'',
     hCode: 401822801,
     screen: null,
     additionalInformation: '\nDriver info: org.openqa.selenium.firefox.FirefoxDriver',
     suppressed: [ [length]: 0 ],
     class: 'org.openqa.selenium.UnsupportedCommandException',
     supportUrl: null },
  class: 'org.openqa.selenium.remote.Response',
  hCode: 1453360085 }


Connection refused! Is selenium server started?

nightwatch.json:

{
    "src_folders": ["tests"],
    "output_folder": false,

    "selenium": {
        "start_process": true,
        "server_path": "selenium-server-standalone-2.45.0.jar"
    },

    "test_settings": {
        "default": {}
    }
}

tests/google.js

module.exports = {
    'Visit Google': function (browser) {
        browser
            .url('http://www.google.com')
            .waitForElementVisible('body', 1000)
            .assert.title("Google")
            .end();
    }
};

Setting start_process to false and starting Selenium manually with java -jar selenium-server-standalone-2.45.0.jar, everything works:

$ node node_modules/nightwatch/bin/runner.js --verbose

[Google] Test Suite
===================

Running:  Visit Google
INFO Request: POST /wd/hub/session 
 - data:  {"desiredCapabilities":{"browserName":"firefox","javascriptEnabled":true,"acceptSslCerts":true,"platform":"ANY","name":"Google"}} 
 - headers:  {"Content-Type":"application/json; charset=utf-8","Content-Length":129}
INFO Response 200 POST /wd/hub/session{ sessionId: '0de12c13-f012-4bab-93c0-99e1cddd0ac4',
  status: 0,
  state: null,
  value: 
   { platform: 'LINUX',
     javascriptEnabled: true,
     acceptSslCerts: true,
     browserName: 'firefox',
     rotatable: false,
     locationContextEnabled: true,
     'webdriver.remote.sessionid': '0de12c13-f012-4bab-93c0-99e1cddd0ac4',
     version: '38.0.1',
     databaseEnabled: true,
     cssSelectorsEnabled: true,
     handlesAlerts: true,
     webStorageEnabled: true,
     nativeEvents: false,
     applicationCacheEnabled: true,
     takesScreenshot: true },
  class: 'org.openqa.selenium.remote.Response',
  hCode: 1446382936 }
INFO Got sessionId from selenium 0de12c13-f012-4bab-93c0-99e1cddd0ac4
INFO Request: POST /wd/hub/session/0de12c13-f012-4bab-93c0-99e1cddd0ac4/url 
 - data:  {"url":"http://www.google.com"} 
 - headers:  {"Content-Type":"application/json; charset=utf-8","Content-Length":31}
INFO Response 200 POST /wd/hub/session/0de12c13-f012-4bab-93c0-99e1cddd0ac4/url{ sessionId: '0de12c13-f012-4bab-93c0-99e1cddd0ac4',
  status: 0,
  state: 'success',
  value: null,
  class: 'org.openqa.selenium.remote.Response',
  hCode: 1795038768 }
LOG     → Completed command url (1359 ms)
INFO Request: POST /wd/hub/session/0de12c13-f012-4bab-93c0-99e1cddd0ac4/elements 
 - data:  {"using":"css selector","value":"body"} 
 - headers:  {"Content-Type":"application/json; charset=utf-8","Content-Length":39}
INFO Response 200 POST /wd/hub/session/0de12c13-f012-4bab-93c0-99e1cddd0ac4/elements{ sessionId: '0de12c13-f012-4bab-93c0-99e1cddd0ac4',
  status: 0,
  state: 'success',
  value: [ { ELEMENT: '0' } ],
  class: 'org.openqa.selenium.remote.Response',
  hCode: 1998041524 }
INFO Request: GET /wd/hub/session/0de12c13-f012-4bab-93c0-99e1cddd0ac4/element/0/displayed 
 - data:   
 - headers:  {"Accept":"application/json"}
INFO Response 200 GET /wd/hub/session/0de12c13-f012-4bab-93c0-99e1cddd0ac4/element/0/displayed{ sessionId: '0de12c13-f012-4bab-93c0-99e1cddd0ac4',
  status: 0,
  state: 'success',
  value: true,
  class: 'org.openqa.selenium.remote.Response',
  hCode: 730193816 }
 ✔ Element <body> was visible after 209 milliseconds.
LOG     → Completed command waitForElementVisible (211 ms)
INFO Request: GET /wd/hub/session/0de12c13-f012-4bab-93c0-99e1cddd0ac4/title 
 - data:   
 - headers:  {"Accept":"application/json"}
INFO Response 200 GET /wd/hub/session/0de12c13-f012-4bab-93c0-99e1cddd0ac4/title{ sessionId: '0de12c13-f012-4bab-93c0-99e1cddd0ac4',
  status: 0,
  state: 'success',
  value: 'Google',
  class: 'org.openqa.selenium.remote.Response',
  hCode: 270088606 }
 ✔ Testing if the page title equals "Google".
LOG     → Completed command title (41 ms)
LOG     → Completed command title (41 ms)
INFO Request: DELETE /wd/hub/session/0de12c13-f012-4bab-93c0-99e1cddd0ac4 
 - data:   
 - headers:  {"Content-Length":0}
INFO Response 200 DELETE /wd/hub/session/0de12c13-f012-4bab-93c0-99e1cddd0ac4{ sessionId: '0de12c13-f012-4bab-93c0-99e1cddd0ac4',
  status: 0,
  state: 'success',
  value: null,
  class: 'org.openqa.selenium.remote.Response',
  hCode: 312784151 }
LOG     → Completed command end (96 ms)
LOG     → Completed command session (96 ms)
INFO FINISHED

OK. 2 assertions passed. (3.563s)

Relevant version info: nightwatch 0.6.12, selenium 2.45, firefox 38.0.1 on Arch Linux 4.0.4-1

About this issue

  • Original URL
  • State: closed
  • Created 9 years ago
  • Comments: 28 (8 by maintainers)

Commits related to this issue

Most upvoted comments

@ahammar I had the same issue on Arch Linux and the solution really was to adjust the /etc/hosts as the default file in Arch contains this:

#
# /etc/hosts: static lookup table for host names
#

#<ip-address>   <hostname.domain.org>      <hostname>
127.0.0.1       localhost.localdomain       localhost
::1             localhost.localdomain       localhost

I switched the localhost.localdomain and localhost around and now it works.

+2
gregmuellegger on Jul 12, 2015

Alright, we’ll get it merged in the next version.

+1
beatfactor on May 16, 2016
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