[SOLVED] Why is Webdriver Unable to Connect to Host 127.0.0.1 on Port 7055 After 45000 ms? - jenkins
[SOLVED] Troubleshooting WebDriver Connection Issues to Host 127.0.0.1 on Port 7055 in Jenkins
In this chapter, we look at a common problem. WebDriver cannot connect to Host 127.0.0.1 on Port 7055 after 45000 ms while running tests in Jenkins. This connection issue can stop our automated tests and cause delays. It is important to understand why this happens and find the right solutions. This will help us keep our CI/CD pipeline running smoothly. We will go through different steps to fix this issue. We will focus on compatibility, settings, and network.
Solutions We Will Discuss:
- Check WebDriver and Selenium Version Compatibility
- Verify Jenkins Configuration for WebDriver Execution
- Ensure Proper Firewall and Network Settings
- Increase WebDriver Connection Timeout
- Configure Jenkins to Use Correct Port
- Update or Reinstall Browser Drivers
By looking at these points, we can lower the chances of facing the issue: “[SOLVED] Why is WebDriver Unable to Connect to Host 127.0.0.1 on Port 7055 After 45000 ms?” If you want more details on setting up Jenkins CI, you can check our guide on how to set up Jenkins CI with WebDriver.
Also, if we have other problems with Selenium GUI tests, see our resource on why Selenium GUI tests may not run as expected. Now let’s go into each solution to make sure our Jenkins and WebDriver work well!
Part 1 - Check WebDriver and Selenium Version Compatibility
We need to make sure the versions of WebDriver and Selenium we use work well together. If they do not match, we can face issues like the error “WebDriver Unable to Connect to Host 127.0.0.1 on Port 7055 After 45000 ms”.
Check Selenium Version: First, we open our terminal or command prompt. Then we check the version of Selenium we have installed:
pip show selenium
Check WebDriver Version: Next, we need to check that we have the right WebDriver for our browser. For example, if we use Chrome, we should check the version of ChromeDriver:
chromedriver --version
Compatibility Matrix: We can look at the Selenium official documentation to find the compatibility matrix. This helps us see which versions work together.
Upgrade/Downgrade: If we find that the versions do not match, we can upgrade or downgrade using pip:
pip install selenium==<desired_version>
Download the Correct WebDriver: We should download the right version of WebDriver from its official sites. For example, we can get ChromeDriver or GeckoDriver that match our browser version.
By making sure our WebDriver and Selenium versions match, we can fix the connection issue about “WebDriver Unable to Connect to Host 127.0.0.1 on Port 7055 After 45000 ms”. If we need more help with Jenkins setup, we can check this guide.
Part 2 - Verify Jenkins Configuration for WebDriver Execution
To fix the problem of WebDriver not connecting to host 127.0.0.1 on port 7055 after 45000 ms, we need to check the Jenkins configuration for WebDriver execution.
Configure Jenkins to Use Selenium Plugin:
- We need to make sure that the Selenium Plugin is installed in Jenkins. We can do this by going to Manage Jenkins > Manage Plugins and looking at the Installed tab.
Set Up WebDriver in Jenkins Job:
In our Jenkins job settings, under the Build Environment section, we should check the option to use Selenium WebDriver.
We must specify the WebDriver setup:
// Example for setting WebDriver in a Pipeline { pipeline agent any{ stages stage('Run Tests') { { steps { script def driver = new org.openqa.selenium.chrome.ChromeDriver() // Our test code here .quit() driver} } } } }
Environment Variables:
We need to set the correct environment variables for WebDriver:
webdriver.chrome.driver
for ChromeDriverwebdriver.gecko.driver
for GeckoDriver
We can do this in the Execute Shell build step:
export webdriver.chrome.driver=/path/to/chromedriver export webdriver.gecko.driver=/path/to/geckodriver
Jenkins Node Configuration:
- If we use Jenkins agents (nodes), we must make sure that the WebDriver and browser are installed on those nodes.
Check Jenkins Logs:
- We should look at the Jenkins logs for any error messages about WebDriver execution. This can help us find configuration problems.
Network Configuration:
- We need to check that Jenkins can talk to the WebDriver server. If we use a remote WebDriver, we must make sure the host and port are set up correctly and can be reached.
For more help on setting up Jenkins CI with WebDriver, we can look at this Jenkins CI setup guide.
Part 3 - Ensure Proper Firewall and Network Settings
We need to fix the problem where WebDriver cannot connect to host 127.0.0.1 on port 7055 after 45000 ms. It is important to check that our firewall and network settings are set up right. Let’s follow these steps:
Check Firewall Rules: We should make sure that our firewall allows traffic on port 7055. We may need to create a rule to let connections in and out on this port.
For Windows Firewall:
- Open Control Panel and go to Windows Defender Firewall.
- Click on “Advanced settings”.
- Select “Inbound Rules” and then “New Rule”.
- Choose “Port” and then click “Next”.
- Select “TCP” and type “7055” in the “Specific local ports” box.
- Allow the connection and finish the rule setup.
For Linux (UFW):
sudo ufw allow 7055/tcp
Check Network Configuration: We need to check that our network settings do not block localhost connections. We should be able to ping 127.0.0.1 and there shouldn’t be any network rules that stop this.
ping 127.0.0.1
Review Proxy Settings: If we use a proxy, we must check that it is set up right and not blocking the connection to 127.0.0.1 on port 7055. We may need to skip the proxy for local addresses.
Disable VPN or Security Software: If we are using a VPN or some security software, we can turn it off for a while to see if it fixes the connection problem.
Localhost Resolution: We should make sure that our system can find
localhost
as127.0.0.1
. We need to check thehosts
file for the right entries. This file is usually located at:- Windows:
C:\Windows\System32\drivers\etc\hosts
- Linux/Mac:
/etc/hosts
It should have:
127.0.0.1 localhost
- Windows:
By checking our firewall and network settings, we can help to fix the connection issues with WebDriver on Jenkins. For more help on setting up Jenkins, we can look at how to set up Jenkins CI and why Selenium GUI tests may not work.
Part 4 - Increase WebDriver Connection Timeout
We can fix the problem when WebDriver cannot connect to the host at 127.0.0.1 on port 7055 after 45000 ms. We can increase the WebDriver connection timeout. This change can help if our tests or environment need more time to connect.
For Selenium WebDriver with Java:
We can set the timeout using the Timeouts
interface:
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import java.util.concurrent.TimeUnit;
public class WebDriverTimeout {
public static void main(String[] args) {
// Set the path for the browser driver
System.setProperty("webdriver.gecko.driver", "path/to/geckodriver"); // Firefox
// System.setProperty("webdriver.chrome.driver", "path/to/chromedriver"); // Chrome
= new FirefoxDriver(); // or new ChromeDriver();
WebDriver driver
// Set timeouts
.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS); // Increase implicit wait
driver.manage().timeouts().pageLoadTimeout(60, TimeUnit.SECONDS); // Increase page load timeout
driver}
}
For Selenium WebDriver with Python:
We can set the WebDriver connection timeout like this:
from selenium import webdriver
# Set the path for the browser driver
= webdriver.Firefox(executable_path='path/to/geckodriver') # Firefox
driver # driver = webdriver.Chrome(executable_path='path/to/chromedriver') # Chrome
# Set timeouts
60) # Increase implicit wait
driver.implicitly_wait(60) # Increase page load timeout driver.set_page_load_timeout(
For Selenium Grid:
If we use Selenium Grid, we can also set the timeout in the
node
configuration file (JSON):
{
"capabilities": [
{
"browserName": "firefox",
"maxInstances": 5,
"seleniumProtocol": "WebDriver",
"timeout": 60000
}
],
"configuration": {
"port": 5555,
"timeout": 60000, // Increase the session timeout
"browserTimeout": 60000 // Increase the browser timeout
}
}
When we increase the timeout, it may fix the connection issue. If we still have problems, we can check our Jenkins configuration. We also need to make sure our firewall settings allow connections on the right port. For more information on how to set up Jenkins for WebDriver execution, please check this guide.
Part 5 - Configure Jenkins to Use Correct Port
We need to fix the problem where WebDriver cannot connect to host 127.0.0.1 on port 7055. This happens because Jenkins is not using the right port for WebDriver. By default, WebDriver might try to use a different port. This can cause connection timeouts. Here is how we can set up Jenkins to use the right port:
Modify Jenkins Configuration:
- First, we open the Jenkins configuration file. This file is usually
found at
/etc/default/jenkins
or/var/lib/jenkins/config.xml
. It depends on how we installed Jenkins. - Next, we look for the line that shows the HTTP or JNLP port. The default HTTP port is often 8080.
- First, we open the Jenkins configuration file. This file is usually
found at
Set the WebDriver Port:
We can set the WebDriver port directly in the Jenkins job configuration. In Jenkins, we go to the job configuration page. We add the following line under “Build Environment” or “Build Steps”:
export SELENIUM_PORT=7055
Also, we need to make sure that our test scripts use this port in the WebDriver capabilities:
= new DesiredCapabilities(); DesiredCapabilities capabilities .setCapability("webdriver.remote.port", 7055); capabilities
Update Jenkins Plugins:
- We have to check if the needed plugins for WebDriver are installed and updated. We can do this by going to Manage Jenkins > Manage Plugins and looking for updates.
Restart Jenkins:
After we make the changes, we need to restart Jenkins to apply the new settings. We can restart it through the Jenkins web interface or by using the command line:
sudo systemctl restart jenkins
By making sure Jenkins uses the right port, we can avoid the timeout issue when connecting WebDriver to the host. For more help on setting up Jenkins, we can look at this article on setting up Jenkins CI.
Part 6 - Update or Reinstall Browser Drivers
To fix the problem of WebDriver not connecting to host 127.0.0.1 on port 7055 after 45000 ms, we need to use the right and updated browser drivers. Here are the steps to update or reinstall them:
Identify Your Browser Version: First, check the version of the browser we are using (for example, Chrome or Firefox).
Download the Latest Driver:
- For Chrome, we can download the latest ChromeDriver from the ChromeDriver downloads page.
- For Firefox, we can download the latest GeckoDriver from the GeckoDriver releases page.
Replace the Existing Driver:
- Find the current browser driver file on our system.
- Replace it with the new driver we just downloaded. Make sure the new driver is in a folder that is in our system’s PATH variable.
Verify Driver Installation:
Run this command in our terminal or command prompt to check if the driver is installed correctly:
webdriver-manager update
We can also run a simple Selenium script to test the connection:
from selenium import webdriver = webdriver.Chrome() # or webdriver.Firefox() driver "http://www.google.com") driver.get(print(driver.title) driver.quit()
Check for Compatibility: We need to make sure the driver version matches the browser version we are using. We can look at the Selenium documentation for compatibility charts.
Reinstall the Driver (if needed):
- If we still have problems, we can uninstall the current driver and then install the latest version again.
By doing these steps, we can make sure our browser drivers are up-to-date. This may help us fix the connection issue with WebDriver.
Frequently Asked Questions
1. What causes WebDriver to fail connecting to 127.0.0.1 on port 7055?
The error message that says WebDriver can’t connect to 127.0.0.1 on port 7055 usually happens because of version problems or wrong settings in Jenkins. We should check that our WebDriver and Selenium versions match. You can find more details in our guide on WebDriver and Selenium version compatibility.
2. How can I check my Jenkins configuration for WebDriver execution?
To check Jenkins settings for WebDriver, we need to look at our Jenkins job settings. Make sure the right browser drivers are installed and set up correctly. If the settings are not right, it can cause connection problems. For a full setup guide, we can read our article on setting up Jenkins CI.
3. What firewall settings should I consider for WebDriver and Jenkins?
When we fix WebDriver connection issues, we should check our firewall settings. Make sure the firewall allows traffic through port 7055. This is very important because firewalls can block what we need. If we need help with firewall settings, we can look at our resource on fixing Jenkins CI pipeline issues.
4. How do I increase the WebDriver connection timeout?
If we see timeout problems with WebDriver, we can increase the connection timeout in our Selenium WebDriver settings. This can help if our tests take too long. We can learn more about changing these settings in our article on scheduling jobs in Jenkins.
5. What should I do if my browser drivers are outdated?
Old browser drivers can make WebDriver not connect. We need to use the latest versions of the browser drivers that work with our WebDriver setup. For steps on how to update or reinstall browser drivers, we can check our article that talks about common Selenium testing issues and how to fix them.
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