Android Question Pre-launch report issue: Unsupported API

[toby]

I got a pre-launch report from Google. It contains 10 unsupported API issues and this, about okhttp, is the first one. Could someone show me how to fix it? Can I ignore it?

API: Lcom/android/org/conscrypt/OpenSSLSocketImpl;->getAlpnSelectedProtocol()[B
Stack Trace #1:

Spoiler

StrictMode policy violation: android.os.strictmode.NonSdkApiUsedViolation: Lcom/android/org/conscrypt/OpenSSLSocketImpl;->getAlpnSelectedProtocol()[B
at android.os.StrictMode.lambda$static$1(StrictMode.java:428)
at android.os.-$$Lambda$StrictMode$lu9ekkHJ2HMz0jd3F8K8MnhenxQ.accept(Unknown Source:2)
at java.lang.Class.getDeclaredMethodInternal(Native Method)
at java.lang.Class.getPublicMethodRecursive(Class.java:2075)
at java.lang.Class.getMethod(Class.java:2063)
at java.lang.Class.getMethod(Class.java:1690)
at okhttp3.internal.platform.OptionalMethod.getPublicMethod(OptionalMethod.java:164)
at okhttp3.internal.platform.OptionalMethod.getMethod(OptionalMethod.java:149)
at okhttp3.internal.platform.OptionalMethod.invoke(OptionalMethod.java:106)
at okhttp3.internal.platform.OptionalMethod.invokeWithoutCheckedException(OptionalMethod.java:129)
at okhttp3.internal.platform.AndroidPlatform.getSelectedProtocol(AndroidPlatform.java:137)
at okhttp3.internal.connection.RealConnection.connectTls(RealConnection.java:347)
at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:284)
at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:169)
at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:258)
at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:127)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:257)
at okhttp3.RealCall.execute(RealCall.java:93)
at anywheresoftware.b4h.okhttp.OkHttpClientWrapper.executeWithTimeout(OkHttpClientWrapper.java:173)
at anywheresoftware.b4h.okhttp.OkHttpClientWrapper.access$0(OkHttpClientWrapper.java:170)
at anywheresoftware.b4h.okhttp.OkHttpClientWrapper$ExecuteHelper.run(OkHttpClientWrapper.java:218)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:458)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:764)

 

[agraham]

It looks like this is the key to the problem. You are only meant to use published SDK APIs.

NonSdkApiUsedViolation

I've no idea how to solve it though

 

[toby]

I only use libraries that came with B4A 11.0 and those available in the B4X forum. I've found that the report is very confusing.

 

[drgottjr]

take a look at this
from that post:

okhttp use some reflection to config the network, such as ALPN, when run in android P, system will logcat the warning in the logcat.
see https://developer.android.com/preview/restrictions-non-sdk-interfaces.html for Android P behavior change
Accessing hidden method Lcom/android/org/conscrypt/OpenSSLSocketImpl;->setAlpnProtocols([B)V (light greylist, ref

apparently accessing a hidden method (by you or within the api) will trigger the message. reading elsewhere, the upshot seems to be it's nothing you have control over.

 

[toby]

This is the Stacktrace #2 of the same issue which occurred 6 times during testing. Therefore I hope that I could do something about it somehow.

StrictMode policy violation: android.os.strictmode.NonSdkApiUsedViolation: Lcom/android/org/conscrypt/OpenSSLSocketImpl;->getAlpnSelectedProtocol()[B
at android.os.StrictMode.lambda$static$1(StrictMode.java:428)
at android.os.-$$Lambda$StrictMode$lu9ekkHJ2HMz0jd3F8K8MnhenxQ.accept(Unknown Source:2)
at java.lang.Class.getDeclaredMethodInternal(Native Method)
at java.lang.Class.getPublicMethodRecursive(Class.java:2075)
at java.lang.Class.getMethod(Class.java:2063)
at java.lang.Class.getMethod(Class.java:1690)
at okhttp3.internal.platform.OptionalMethod.getPublicMethod(OptionalMethod.java:164)
at okhttp3.internal.platform.OptionalMethod.getMethod(OptionalMethod.java:149)
at okhttp3.internal.platform.OptionalMethod.isSupported(OptionalMethod.java:55)
at okhttp3.internal.platform.AndroidPlatform.getSelectedProtocol(AndroidPlatform.java:135)
at okhttp3.internal.connection.RealConnection.connectTls(RealConnection.java:347)
at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:284)
at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:169)
at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:258)
at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:127)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:257)
at okhttp3.RealCall.execute(RealCall.java:93)
at anywheresoftware.b4h.okhttp.OkHttpClientWrapper.executeWithTimeout(OkHttpClientWrapper.java:173)
at anywheresoftware.b4h.okhttp.OkHttpClientWrapper.access$0(OkHttpClientWrapper.java:170)
at anywheresoftware.b4h.okhttp.OkHttpClientWrapper$ExecuteHelper.run(OkHttpClientWrapper.java:218)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:458)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:764)

 

[toby]

I would like to know which libraries are being complained about so that I could try to find alternative solutions.

TIA

 

[Erel]

Ignore this warning.