Fatal Exception: io.reactivex.exceptions.UndeliverableException in version 3.4

[apexkid]

Facing the problem in version 3.4

Caused by java.io.IOException: sendto failed: EPERM (Operation not permitted)
       at libcore.io.IoBridge.maybeThrowAfterSendto(IoBridge.java:576)
       at libcore.io.IoBridge.sendto(IoBridge.java:544)
       at java.net.PlainDatagramSocketImpl.send(PlainDatagramSocketImpl.java:125)
       at java.net.DatagramSocket.send(DatagramSocket.java:721)
       at com.instacart.library.truetime.SntpClient.requestTime(SntpClient.java:116)
       at com.instacart.library.truetime.TrueTime.requestTime(TrueTime.java:133)
       at com.instacart.library.truetime.TrueTimeRx$4$1$2.subscribe(TrueTimeRx.java:211)
       at io.reactivex.internal.operators.flowable.FlowableCreate.subscribeActual(FlowableCreate.java:72)
       at io.reactivex.Flowable.subscribe(Flowable.java:14409)
       at io.reactivex.Flowable.subscribe(Flowable.java:14356)
       at io.reactivex.internal.operators.flowable.FlowableSubscribeOn$SubscribeOnSubscriber.run(FlowableSubscribeOn.java:82)
       at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
       at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
       at java.util.concurrent.FutureTask.run(FutureTask.java:266)
       at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
       at java.lang.Thread.run(Thread.java:764)


Caused by android.system.ErrnoException: sendto failed: EPERM (Operation not permitted)
       at libcore.io.Linux.sendtoBytes(Linux.java)
       at libcore.io.Linux.sendto(Linux.java:227)
       at libcore.io.BlockGuardOs.sendto(BlockGuardOs.java:307)
       at libcore.io.IoBridge.sendto(IoBridge.java:542)
       at java.net.PlainDatagramSocketImpl.send(PlainDatagramSocketImpl.java:125)
       at java.net.DatagramSocket.send(DatagramSocket.java:721)
       at com.instacart.library.truetime.SntpClient.requestTime(SntpClient.java:116)
       at com.instacart.library.truetime.TrueTime.requestTime(TrueTime.java:133)
       at com.instacart.library.truetime.TrueTimeRx$4$1$2.subscribe(TrueTimeRx.java:211)
       at io.reactivex.internal.operators.flowable.FlowableCreate.subscribeActual(FlowableCreate.java:72)
       at io.reactivex.Flowable.subscribe(Flowable.java:14409)
       at io.reactivex.Flowable.subscribe(Flowable.java:14356)
       at io.reactivex.internal.operators.flowable.FlowableSubscribeOn$SubscribeOnSubscriber.run(FlowableSubscribeOn.java:82)
       at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
       at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
       at java.util.concurrent.FutureTask.run(FutureTask.java:266)
       at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
       at java.lang.Thread.run(Thread.java:764)

[mariusgreve]

I'm also facing the same issue, among others.
@kaushikgopal I would assume this library is not being maintained anymore since the last release was almost 2 years ago?
It would be great if this was stated in the README so people can be warned before using it.

[kaushikgopal]

We aren’t actively adding features to the library. But it’s still being maintained and we use this library in our apps daily.

[kaushikgopal]

Can you provide more details or similar observations. I’ve seen that error show up in emulators but not in real devices with good network connectivity.

You’ll have to provide more details to see if it’s a pattern others have observed or if anyone else has suggestions to address it.

[anpez]

It just happened to me on the Android emulator. Uninstalling the app and reinstalling fixed the issue.

[anjalsaneen]

We are having the same issue on production for 2 million users.

Caused by java.io.IOException
sendto failed: EPERM (Operation not permitted)
libcore.io.IoBridge.maybeThrowAfterSendto (IoBridge.java:590)
java.net.DatagramSocket.send (DatagramSocket.java:721)
com.instacart.library.truetime.SntpClient.requestTime (SntpClient.java:116)
com.instacart.library.truetime.TrueTime.requestTime (TrueTime.java:133)
com.instacart.library.truetime.TrueTimeRx$4$1$2.subscribe (TrueTimeRx.java:211)
io.reactivex.internal.operators.flowable.FlowableCreate.subscribeActual (FlowableCreate.java:71)
io.reactivex.Flowable.subscribe (Flowable.java:14918)
io.reactivex.Flowable.subscribe (Flowable.java:14865)
io.reactivex.internal.operators.flowable.FlowableSubscribeOn$SubscribeOnSubscriber.run (FlowableSubscribeOn.java:82)
io.reactivex.internal.schedulers.ScheduledRunnable.run (ScheduledRunnable.java:66)
io.reactivex.internal.schedulers.ScheduledRunnable.call (ScheduledRunnable.java:57)

[anjalsaneen]

Have we got any update on this? it crossed 280 million instances for us in the last 90 days. Really appreciate if anyone can help here

@kaushikgopal

[MomenZaq]

Same problem here!
Is there any update?