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  • Writer's picturekhyati sehgal

org.openqa.selenium.WebDriverException: Error forwarding the new session Empty pool of VM for setup

Problem Statement


Exception in thread "main" org.openqa.selenium.WebDriverException: Error forwarding the new session Empty pool of VM for setup Capabilities [{browserName=safari}]
Command duration or timeout: 198 milliseconds
Build info: version: '2.41.0', revision: '3192d8a', time: '2014-03-27 17:17:32'
System info: host: 'XXXX', ip: '192.168.14.1', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_67'
Driver info: org.openqa.selenium.remote.RemoteWebDriver
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
 at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:193)
 at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:145)
 at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:595)
 at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:240)
 at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:126)
 at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:153)
 at remoteDriver.TestFireFoxRemotely.main(TestFireFoxRemotely.java:17)

Caused by: org.openqa.grid.common.exception.GridException: Error forwarding the new session Empty pool of VM for setup Capabilities [{browserName=safari}]
 at org.openqa.grid.web.servlet.handler.RequestHandler.process(RequestHandler.java:114)
 at org.openqa.grid.web.servlet.DriverServlet.process(DriverServlet.java:83)
 at org.openqa.grid.web.servlet.DriverServlet.doPost(DriverServlet.java:67)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
 at org.seleniumhq.jetty7.servlet.ServletHolder.handle(ServletHolder.java:565)
 at org.seleniumhq.jetty7.servlet.ServletHandler.doHandle(ServletHandler.java:479)
 at org.seleniumhq.jetty7.server.session.SessionHandler.doHandle(SessionHandler.java:225)
 at org.seleniumhq.jetty7.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)
 at org.seleniumhq.jetty7.servlet.ServletHandler.doScope(ServletHandler.java:406)
 at org.seleniumhq.jetty7.server.session.SessionHandler.doScope(SessionHandler.java:186)
 at org.seleniumhq.jetty7.server.handler.ContextHandler.doScope(ContextHandler.java:965)
 at org.seleniumhq.jetty7.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
 at org.seleniumhq.jetty7.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
 at org.seleniumhq.jetty7.server.Server.handle(Server.java:349)
 at org.seleniumhq.jetty7.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:452)
 at org.seleniumhq.jetty7.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:47)
 at org.seleniumhq.jetty7.server.AbstractHttpConnection.content(AbstractHttpConnection.java:894)
 at org.seleniumhq.jetty7.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:948)
 at org.seleniumhq.jetty7.http.HttpParser.parseNext(HttpParser.java:857)
 at org.seleniumhq.jetty7.http.HttpParser.parseAvailable(HttpParser.java:235)
 at org.seleniumhq.jetty7.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:66)
 at org.seleniumhq.jetty7.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:254)
 at org.seleniumhq.jetty7.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
 at org.seleniumhq.jetty7.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
 at java.lang.Thread.run(Thread.java:745)

 

Code used


 public static void main(String [] args){
 DesiredCapabilities capabilities = new DesiredCapabilities();
 capabilities.setBrowserName("safari");
 RemoteWebDriver remoteWD = null;
 try{
 remoteWD = new RemoteWebDriver(new URL("http://127.0.0.1:4444/wd/hub"),capabilities);
 }catch(MalformedURLException e){
 e.printStackTrace();
 }
 remoteWD.get("http://google.com");
 remoteWD.findElement(By.name("q")).sendKeys("Testing");
 }
 }

 

Selenium grid/server/remote server command


java -jar selenium-server-standalone.jar -role node -hub http://<ip>/grid/register -browser browserName=firefox -browser browserName=chrome -browser browserName=safari

 

Root Cause Analysis The problem was more of the browser. There could be possible below areas which has to be fixed to resolve the above issue:

  1. Check if you have Safari browser at the server where you want to send your webdriver execution to. This could be your local machine or remote virtual box,etc

  2. Check if you have possible drivers , required for execution.

  3. Check if valid-compatible safari browser compatible jar of selenium stand alone jar at the desired machine.

For me it’s the first issue, at the remote machine safari browser was not there , I picked the latest safari browser along with the latest selenium standalone jar. And this worked for me.

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