App crashes on start when using Firebase In-App Messaging on Android 11

[READ] Step 1: Are you in the right place?

Yes

[REQUIRED] Step 2: Describe your environment

• Firebase Component: In-App Messaging
• Component version: 19.1.5

[REQUIRED] Step 3: Describe the problem

Steps to reproduce:

I was able to reproduce the issue with LineageOS 18.1 (Android 11) without Google Apps (so no Google Play services) on a OnePlus 6T. A user of my app has the same issue with LineageOS on a OnePlus 7T Pro, also without Google Apps. I was not able to reproduce the issue on a Samsung Android 11 phone (stock firmware with Google Apps).

When opening the app it crashes with the following error:

java.lang.AssertionError: Method getAlpnSelectedProtocol not supported for object SSL socket over Socket[address=firebaseinappmessaging.googleapis.com/216.58.214.10,port=443,localPort=37744]
    at io.grpc.okhttp.internal.OptionalMethod.invoke(OptionalMethod.java:114)
    at io.grpc.okhttp.internal.OptionalMethod.invokeWithoutCheckedException(OptionalMethod.java:135)
    at io.grpc.okhttp.OkHttpProtocolNegotiator$AndroidNegotiator.getSelectedProtocol(OkHttpProtocolNegotiator.java:183)
    at io.grpc.okhttp.OkHttpProtocolNegotiator$AndroidNegotiator.negotiate(OkHttpProtocolNegotiator.java:145)
    at io.grpc.okhttp.OkHttpTlsUpgrader.upgrade(OkHttpTlsUpgrader.java:63)
    at io.grpc.okhttp.OkHttpClientTransport$4.run(OkHttpClientTransport.java:571)
    at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
    at java.lang.Thread.run(Thread.java:923)

This error has been fixed in gRPC here: https://github.com/grpc/grpc-java/commit/5803dfd9dcca0fba4483fccf724efc1c853a3ada

It looks like Firebase In-App Messaging is currently using 1.28.0 which does not contain this fix. I tested gRPC version 1.32.2 which works fine on my test device. Please update the gRPC library in Firebase In-App Messaging.

Relevant Code:

Add the following in build.gradle.kts:

implementation("com.google.firebase:firebase-inappmessaging-display-ktx:19.1.5")
// Note that I am also using other Firebase components like Analytics, Crashlytics, and Remote Config.

Workaround:

Add the following in build.gradle.kts:

implementation("io.grpc:grpc-okhttp:1.32.2")

[Thomas-Vos]

@aguatno please re-open the issue as this has not been fixed in Firebase yet.

You can see here: https://github.com/firebase/firebase-android-sdk/blob/4ec27259f9db716a11e521db42677a33902f0945/build.gradle#L49 that the gRPC version is 1.28.0 in Firebase. That version does not contain the fix. This dependency needs to be updated to a higher version, for example gRPC 1.32.2 works for me.

[raghav2945]

Hello Team,

We are experiencing the same problem with our application (Audiomack), and the primary stated device OS version is 11 and the manufacturer is Xiaomi. For reference, I’m sharing the stack trace.

We are currently using the in-app messaging version - implementation ‘com.google.firebase:firebase-inappmessaging-display:20.1.1’.

Fatal Exception: java.lang.AssertionError: Method getAlpnSelectedProtocol not supported for object SSL socket over Socket[address=firebaseinappmessaging.googleapis.com/216.58.221.202,port=443,localPort=45004] at io.grpc.okhttp.internal.OptionalMethod.invoke(OptionalMethod.java:114) at io.grpc.okhttp.internal.OptionalMethod.invokeWithoutCheckedException(OptionalMethod.java:135) at io.grpc.okhttp.OkHttpProtocolNegotiator$AndroidNegotiator.getSelectedProtocol(OkHttpProtocolNegotiator.java:183) at io.grpc.okhttp.OkHttpProtocolNegotiator$AndroidNegotiator.negotiate(OkHttpProtocolNegotiator.java:145) at io.grpc.okhttp.OkHttpTlsUpgrader.upgrade(OkHttpTlsUpgrader.java:63) at io.grpc.okhttp.OkHttpClientTransport$4.run(OkHttpClientTransport.java:571) at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.lang.Thread.run(Thread.java:923)