I want to study details about how the Appium server works, so while studying about the architecture, I am not getting a clear idea about how the session works on Appium server.
There are two components to running Appium automation tests - Appium server and Appium session. Appium server is a REST interface listener, while an Appium session is the entity which makes REST calls to Appium server in order to perform actions such as finding & clicking web elements. The session is tied to a device such as Android emulator or real device.
You can start an Appium server without starting an Appium session, but you cannot start an Appium session without starting an Appium server.
When you have Appium properly installed, you can open the Command prompt & enter appium. You will see a message indicating the Appium REST listener has started, and is listening on a specific address, such as 0.0.0.0:4327.
When you start an Appium session, you have to ensure your session is connecting to the correct port. If you start Appium server on 0.0.0.0:4327, but then try to start a session on 0.0.0.0:5555, the session will not start.
The Appium session uses underlying libraries such as node and Java to interact with web elements. The code is publicly available on https://github.com/appium/appium so you can view the complete architecture and session / server relationship here if you'd like.
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I am trying to run my app on my laptop that has wildfly installed but with no internet connection (internet connection should not be required since wildfly is my server). When my Vaadin PWA starts up, it says an internet connection is required. Is there a simple way to not require the internet?
No real good solutions I could find to try. Tried setting worker service in Chrome to offline.
I'm running Appium 24/7 on a Windows machine to perform automated tests. I'm running these tests via AVD on an emulator with Android 10. For my test, I give the correct Capabilities and runs functionally great. But after a few hours/days I get the follow error:
UnknownError: An unknown server-side error occurred while processing the command. Original error:*Cannot find any free port in range 8200..8299}. Please set the available port number by providing the systemPort capability or double check the processes that are locking ports within this range and terminate these which are not needed anymore at getResponseForW3CError at asyncHandler.
When my code is executed, I make sure the finally in try executes the AppiumDriverLocalService.stop(); method to kill Appium. My feeling says this does somehow not free up any ports for UIAutomator2 (which you can configure, but I have not configured, through systemPort capability.
} finally {
driver.closeApp();
service.stopServer();
System.exit(0);
}
Why does Appium not free up any ports for UIAutomator2 in the range 8000-8299 after stopping the service?
Android Debug Bridge version 1.0.40
Appium version 1.20.2
Android 10
PS I know of the adb command adb -s $UDID forward --remove-all but does this solve the real issue, I don't want to execute a Java Process each time
Update - Fix 2-3
I have fixed the issue by changing the finally clause to execute the following methods in order:
} finally {
AndroidDriver.quit();
AppiumDriverLocalService.stopServer();
In order to free up the port 8200..8299, AndroidDriver must be quit as UIAutomator2 is linked to this. The AppiumDriverLocalService will kill/forward/free this port and UIAutomator2, after this I can freely stop the server:
[ADB] Removing forwarded port socket connection: 8203
This issue is a good example of your problem. As you can see, Appium team is closing it as a Not A Bug.
Reason is obvious: Appium is not responsible for managing ports, it relies that your system has some free in required (by Appium code) range.
systemPort is used to connect to appium-uiautomator2-server, by default is 8200. Basically Appium selects one port from 8200 to 8299 for appium-uiautomator2-server. However, when you run tests in parallel, you must adjust the port to avoid conflicts. If you are not, you should be safe in 99% cases with the default.
Restart the system (assuming it will clear ports) and run tests. Check Appium server logs for any errors on closing session. It could be that issue is related to ADB setup or permission issue, and UI2 server is not stopped properly.
If so, port remains in use. And it is not Appium to deal with cleanup. I'm not sure that adb command you mentioned is a good 100% guaranteed way to do it.
I would just add a shell script that is executed before Appium server start to clean ports in 8200-8299 range and forget this problem.
killall -9 node - to kill all appium running internally and at root level
and adb kill-server - to kill the abd server by running this it resolved the above issue for me , hope may help someone
I have deployed automation script in remote ubuntu-server and i want to execute those script on my local system where appium server is running.I have googled for the answer but all the solutions work only if both the device are connected to same wifi network
Please suggest me the solution to run the script in my local system where Appium server exist.
Where is the device - is It connected at ubuntu-Server?
Where is appium server running?
Where are the test scripts?
I have tried in this way and it worked.
Test scripts are available in System-1
Appium Server & Devices are available in another system. Where devices are connected through a physical cable.
With this approach, I am able to run the scripts remotely from my machine.
Observations: We can try out through accessing devices through WIFI (adb wifi google it). But if wifi fluctuates then appium session will be terminated. To avoid all these go with the physical usb connection.
I am trying to run Coded UI tests and I get this message. This happens only if I disconnect from the remote session or I have it minimized.
I enabled autologon, the agent is running in interactive mode, disabled screen saver and lock screen but still not working.
What should I try next?
You need to not connect visa remote desktop. Connect once and reboot the machine and do not connect.
Every time you RDP to the test box you need to reset it by rebooting.
Reason: The reason for this is that starting a remote desktop session suspends the local desktop session that the agent needs in order to run tests
I am getting an error when I am launching the appium for android. I started node.js by double ckicking node.js then I gave the path of my apk file and then clicked on launch buttonand in console i got following error:
Starting Node Server
Starting Appium in pre-launch
Pre-launcing app
Using fast reset?false
No app-activity desired capability or server param.Parsing from apk.
No app-package desired capability or server param.Parsing from apk.
Using local app from command line: C:\Users\ssharma\lowes-android-app-Wolverine-Sprint6-2014-04-29_17-03-13.apk
Creating new appium session 4aa75228-984f-46f7-8b09-50221dc19875
starting android appium
Preparing device for session
Checking whether app is actually present
Checking whether adb is actually present
Sent shutdown command,waiting for UiAutomator to stop...
Uiautomator did not shut down fast enough calling it gone
Error:
Node Server Process Ended
Please help me in this issue.
What machine are you running on ? On windows you can use exe and on mac you can use app and then pass correct capabilities from appium client.