Possible to run multiple instances of WebDriver at once?

[laredotornado]

Hi,

I'm using the selenium-java-client 2.6 and running two concurrent Java
processes, each of which uses WebDriverBackedSelenium to execute
tests. Every so often, we see exceptions like the below

Build info: version: '2.6.0', revision: '13840', time: '2011-09-13
14:56:25'
System info: os.name: 'Linux', os.arch: 'amd64', os.version:
'2.6.38-10-generic', java.version: '1.6.0_26'
Driver info: driver.version: FirefoxDriver
at
org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:
394)
at
org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:
401)
at
org.openqa.selenium.firefox.FirefoxDriver.getScreenshotAs(FirefoxDriver.java:
200)
at
com.cm.systems.selenium.framework.SeleniumHTMLClient.runTest(SeleniumHTMLClient.java:
264)
at
com.cm.systems.selenium.framework.SeleniumHTMLClient.runSuite(SeleniumHTMLClient.java:
202)
at com.cm.systems.selenium.framework.SeleniumRunner
$Threadz.run(SeleniumRunner.java:280)
at java.lang.Thread.run(Thread.java:662)
Caused by: org.apache.http.conn.HttpHostConnectException: Connection
to http://127.0.0.1:7057 refused
at
org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:
158)
at
org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:
149)
at
org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:
121)
at
org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:
573)
at
org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:
425)
at
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:
820)
at
org.openqa.selenium.remote.HttpCommandExecutor.fallBackExecute(HttpCommandExecutor.java:
390)
at
org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:
369)
at
org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.execute(NewProfileExtensionConnection.java:
123)
at org.openqa.selenium.firefox.FirefoxDriver
$LazyCommandExecutor.execute(FirefoxDriver.java:258)
at
org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:
377)
... 6 more

Is it possible that if two WebDriver instances are started (through
separate Java processes) that they're both trying to connect to the
same port and that would be why one connection is refused? If so, is
there a way to tell WebDriver to connect to a specific port? - Dave

[Paul Hammant]

Doe the same also happen with Selenium 2.7?

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