[BUG] java.lang.NullPointerException: proxySelector == null while getting azure virtual networks

[giridharkn]

Describe the bug
A clear and concCaused by: java.lang.NullPointerException: proxySelector == null
at okhttp3.Address.(Address.java:77)
at okhttp3.internal.http.HttpEngine.createAddress(HttpEngine.java:1036)
at okhttp3.internal.http.HttpEngine.(HttpEngine.java:180)
at okhttp3.RealCall.getResponse(RealCall.java:232)
at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:201)
at com.microsoft.rest.retry.RetryHandler.intercept(RetryHandler.java:75)
at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:190)
at com.microsoft.rest.interceptors.CustomHeadersInterceptor.intercept(CustomHeadersInterceptor.java:140)
at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:190)
at com.microsoft.rest.interceptors.UserAgentInterceptor.intercept(UserAgentInterceptor.java:83)
at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:190)
at com.microsoft.azure.credentials.AzureTokenCredentialsInterceptor.intercept(AzureTokenCredentialsInterceptor.java:40)
at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:190)
at com.microsoft.azure.management.resources.fluentcore.utils.ResourceManagerThrottlingInterceptor.intercept(ResourceManagerThrottlingInterceptor.java:43)
at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:190)
at com.microsoft.azure.management.resources.fluentcore.utils.ProviderRegistrationInterceptor.intercept(ProviderRegistrationInterceptor.java:43)
at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:190)
at com.microsoft.rest.interceptors.BaseUrlHandler.intercept(BaseUrlHandler.java:43)
at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:190)
at com.microsoft.rest.interceptors.RequestIdHeaderInterceptor.intercept(RequestIdHeaderInterceptor.java:29)
at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:190)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:163)
at okhttp3.RealCall.execute(RealCall.java:57)
at retrofit2.OkHttpCall.execute(OkHttpCall.java:174)
at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$RequestArbiter.request(RxJavaCallAdapterFactory.java:171)
at rx.Subscriber.setProducer(Subscriber.java:211)
at rx.internal.operators.OnSubscribeMap$MapSubscriber.setProducer(OnSubscribeMap.java:102)
at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:152)
at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:138)
at rx.Observable.unsafeSubscribe(Observable.java:10142)
at rx.internal.operators.OnSubscribeMap.call(OnSubscribeMap.java:48)
at rx.internal.operators.OnSubscribeMap.call(OnSubscribeMap.java:33)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.Observable.subscribe(Observable.java:10238)
at rx.Observable.subscribe(Observable.java:10205)
at rx.observables.BlockingObservable.blockForSingle(BlockingObservable.java:444)
at rx.observables.BlockingObservable.single(BlockingObservable.java:341)
at com.microsoft.azure.management.network.implementation.VirtualNetworksInner.list(VirtualNetworksInner.java:611)ise description of what the bug is.

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[giridharkn]

Exception is thrown at,
VirtualNetworksInner.list() call.

NetworkManagementClientImpl is configured with Proxy

[praries880]

Thank you for opening this issue! We are routing it to the appropriate team for follow up.

[giridharkn]

I have found similar issue here this square/okhttp#4232 which was seems to be fixed in okhttp library.
Can i know, which azure SDK utilizes this latest okhttp library ??
Or using this library in current SDK will work ??

[jianghaolu]

@giridharkn We are using 3.11 version of OkHttp (https://github.com/Azure/autorest-clientruntime-for-java/blob/master/pom.xml#L67). I'll update it to the latest and test it.

[jianghaolu]

Just to give a follow up response, I'm looking into this now and should be able to verify the 3.14 release resolves this issue (or not) early next week.

In the mean time you could work around this issue by forcing the okhttp version in your pom to 3.14. Let me know if you need anything else.

[joshfree]

Also to note that the upgrade to 3.14 will ship in the next release of the SDK package.

[jianghaolu]

@giridharkn We just released the 1.24.1 version of the SDK containing the 3.12.2 version of the OkHttp dependency. I verified it locally that the proxy selector issue is fixed. You can find the SDK at https://search.maven.org/artifact/com.microsoft.azure/azure/1.24.1/jar.

Please let us know and feel free to reopen the issue if you have any questions! We are excited to help you get unblocked!