GCM Load testing

[vivek sachdeva]

Hi, 

I am able to send the notifications to the android phones without any issues in the test env.  I want to do load testing before it goes to production. I can not buy million real android devices for testing. So, what is the best way of testing such a scenario?

Thanks,

Vivek

[Chandrashekhar Nelluri]

Try to use Android emulator. It provides virtual environment for android device.

[Shamsuddin]

wat?

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[vivek sachdeva]

Thanks for the response.

The emulator approach does not seem to be practical. Let's say on one machine I run 50 emulators then to test a million devices case, I still need 20000 computers/machines. Any other idea please?

Thanks

[jondot]

You can use my library
https://github.com/jondot/cottonballs

It simulates a GCM server with failures and latency so you can check your messaging infrastructure reliability and scalability easily.

[vivek sachdeva]

Thanks, but it simulates server not client. 

[Francesco]

Vivek, what piece do you want to load test? hopefully your server...

  f

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[vivek sachdeva]

I want to simulate clients (Android phones) actually. We have millions of users using our android app so I want to test if it is really possible to push notifications to all of them. 

[zlang]

Hello jondot.  I'm trying to use cottonballs to mock GCM.  I have it up and running and created the keys.  I’ve verified that my push service is hitting cottonballs on the SSL port when I attempt to send a push notification to GCM.  By “verified” I mean that if cottonballs is not running, I get a "Connection refused” error.  But when I do run it and try to send, I get this error:

Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

I ran the genkeys.sh script that the project Readme.md says to run, but I’m guessing it’s not creating the certs correctly.  My application is running on Tomcat / JDK 8

Any ideas?

[zlang]

I got it working.  Had to import the certificate.cer into my JDK cacerts using keytool and restart tomcat 

e.g.

sudo keytool -import -alias android.googleapis.com  -keystore /Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/lib/security/cacerts -file certificate.der 

Thanks for creating this great project, I hope to use it a lot!