Develop Reference

telnet on hosted machine running on azure devops pipeline

Here is my detail about my problem:
what I want to achieve:
create a pipeline on azure DevOps, containing tasks
create android emulator with internet condition full
run some tests
connect telnet
connect telnet to android console port- send command to android device to change nework condition to low bandwidth as mentioned here (https://developer.android.com/studio/run/emulator-console)
Note: I have hosted MacOS, also telnet+expect and spawn is installed over it
What is the problem:
My android device is running over 5037 port
telnet task output showing me "telnet connected to local host" command I am using to connect to android console port is : telnet localhost 5037 (in a command line task)
escape character is "^]"
**
it is not showing me any authentication required message or OK so I can go ahead with it, also I am trying to send command like expect"^]" returning me nothing
**
I want to run emulator -netspeed gsm #Pixel_API_26 please help

Android terminal--telnet missing commands, receiving this error : KO: unknown command, try 'help'

I'm trying to set the coordinates on an emulated device.
XXXX-MacBook-XXXXX XXXX$ telnet localhost 5554
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Android Console: Authentication required
Android Console: type 'auth <auth_token>' to authenticate
Android Console: you can find your <auth_token> in
'/Users/XXXXX/.emulator_console_auth_token'
OK
The problem is...
geo fix 77.9888 34.0000
KO: unknown command, try 'help'
I don't seem to have the geo command
help
Android console command help:
help|h|? print a list of commands
auth use 'auth <auth_token>' to get extended functionality
avd control virtual device execution
quit|exit quit control session
try 'help <command>' for command-specific help
OK
In fact, it looks like most of my commands are missing.
Does anyone know why the commands are missing?

You are not authenticated.
Obtain the content of /Users/XXXXX/.emulator_console_auth_token and after the OK prompt enter
auth <auth_token>

For amateurs' like me what diego-torres-milano meant :
cat /Users/XXXXX/.emulator_console_auth_token
<copy the above contents - auth_token>
telnet localhost <portnumber> (mostly 5554)
auth auth_token

Android Emulator : cannot run commands from PuTTY

I'm new in Android development. I'm trying to connect via PuTTY to Android Emulator with telnet ( in order to emulate events - sms send , location change etc) After I created session on PuTTY and connected , any command I entered - seems no effect :
Android Console: type 'help' for a list of commands
OK
help
<no output after help>
I'm running emulator from IntelliJ IDEA 14.0.2. What are the settings on PuTTY connection to be set/checked ?
Any information will be helpful . Thanks in advance

I had the same issue, and the fix for me was in the Connection >> Telnet settings. When I had the Telnet negotiation mode set to Active I had the same problem you are seeing. Try setting the mode to Passive.
That is what fixed it for me.

How to launch 'telnet' console in Android Studio device Emulator?

I was watching a video where the instructor is using a console to type in commands that lead straight to the Emulated Android device. I have the emulated device functioning and I am using Android Studio, but I cannot seem to figure out where he starts the console from. Any ideas?
NOTE: The video is not public so I cannot link it.

I found a solution to my problem. TelNet needs to be enabled in Windows, before you can use it. It is disabled by default I believe. This site has step-by-step instructions for enabling it (it works for all versions of Windows - Vista - 7 - 8 - 8.1). Once TelNet CLIENT is enabled:
Go to -- C:\Program Files (x86)\Android\android-sdk\tools
SHIFT + RIGHT CLICK on an empty space
Click 'Open Command Window Here'
Type in 'telnet localhost 5554' (port of emulated device)
Now you should be connected to the Emulated Android device through TelNet.

On Windows 10
In Ask me anything type Cmd
Then Right mouse button on Command Prompt and Run as Administrator
Execute this command dism /online /Enable-Feature /FeatureName:TelnetClient you should get following:
Then type in following cd C:\Program Files (x86)\Android\android-sdk\tools
Then type in telnet localhost 5554 You should get this:
If not I have failed you....
Hope this saves you some time.

There is another way to do this, which might be a little quicker:
Enable telnet client on your computer
On Android Studio, click the Terminal tab located at the bottom of android studio
Type: 'telnet localhost 5554' and you should be connected

If you are windows user follow this step
go to control panel
go to programs and features
click on "turn windows feature on or off" a prompt box will be appear()
mark the checkbox of Telnet Client
open command prompt and type "telnet localhost port_number" (see cmd image) after this connection will be establish
try out various command like send sms port_number hello, geo fix 14 5 etc

Debugging android device over the Internet

I am looking for a way to debug a device remotely over the Internet.
I am getting a lot of bug reports from my users which I can't even reproduce. It would be easy to solve them if I could debug the device over the Internet as if it were connected to my PC.
Is this possible?
I heard about debugging over wifi in local network, maybe there is similar way to achieve it over the Internet?

It is possible to setup Android device for debugging over Internet, however it requires USB connection to enable it or root access on the device. In addition to that you will have to setup port forwarding to device to accept incoming ADB connections from the the Internet. It hardly can help unless users of your app are developers with great desire to cooperate.
You can find detailed instructions here:
http://www.cleansoft.lv/debugging-android-applications-remotely/

Steps to Follow:
First In Android Settings Application go to About Device option.
Click 9 times on Build Number option, so that you can unlock Developer Options setting.
Now In you Setting's Application, you will have Developer Options enabled, go and click on it.
set following options on : Stay Awake, USB Debugging and if you have Internet Adb option in menu set that also enabled if not then dont worry continue the steps.
Now open your Android Studio and the application you want to run on the android device.
In Android Studio, at bottom click on Terminal tab, Terminal window opens.
Now through your terminal go to the directory where your Android SDK is stored
In SDK directory go to platform-tools directory.
Now if you list the files in the platform-tools you will see adb there.
Running following Commands.
as an example.
adb connect <ip-address-of-your-device>:5555
as an example:
adb connect 10.10.0.21:5555
The terminal should show something like below
adb server is out of date. killing...
*daemon started successfully*
connected to 10.10.0.21:5555
Now run shell command
adb shell
you will get the prompt something like this, i my case i used android x86 device for debugging.
shell#x86_64:/$
Now if you go to the task bar in the android studio and click on Run options and then Run'app' you will be able to see the device as your Deployment Target.
Hope it helps !

You can use Crashlytics in your app.. It helps you to get the detailed crash logs. Whenever an app crashes, it will send you the detailed crash report, from which you can figure out what is happening at the client side.
Get more info about adding crashlytics to the app from here.
Send this new app to the client so can have workaround:

You can also use adb via tcp ip:
adb connect ip:port
Use a remote access (teamviewer or droid apk) to enable debugging in android developer tools.
In the router where the android is connected remember to create port forwards to the android ip.
In your machine with adb installed do:
adb connect public_ip:port
After being connected, you can do:
adb logcat
or
adb shell
Or any adb command you want to.

try Debugging Firefox for Android over Wifi it's working with me
https://developer.mozilla.org/en-US/docs/Tools/Remote_Debugging/Debugging_Firefox_for_Android_over_Wifi