Stomp connection error UnknownServiceException

[samin-safaei]

I have downloaded the server example but I keep getting the same error. I have used the following server configurations:

@Configuration
@EnableWebSocket
@EnableWebSocketMessageBroker
class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {

    @Override
    void configureMessageBroker(MessageBrokerRegistry config) {
        config.enableSimpleBroker("/topic", "/queue", "/exchange");
//        config.enableStompBrokerRelay("/topic", "/queue", "/exchange"); // Uncomment for external message broker (ActiveMQ, RabbitMQ)
        config.setApplicationDestinationPrefixes("/topic", "/queue"); // prefix in client queries
        config.setUserDestinationPrefix("/user");
    }

    @Override
    void registerStompEndpoints(StompEndpointRegistry registry) {
        registry.addEndpoint("/example-endpoint").withSockJS()
    }

    @Override
    void configureWebSocketTransport(WebSocketTransportRegistration registration) {
        registration.setMessageSizeLimit(8 * 1024);
    }
}

Also here is my client stomp connection. As you mentioned in #49 I am using /websocket :

mStompClient = Stomp.over(Stomp.ConnectionProvider.OKHTTP, "ws://" + ANDROID_EMULATOR_LOCALHOST
                + ":" + RestClient.SERVER_PORT + "/example-endpoint/websocket");

E/MainActivity: Stomp connection error
    java.lang.Exception: java.net.UnknownServiceException: CLEARTEXT communication to 192.168.1.6 not permitted by network security policy
        at ua.naiksoftware.stomp.provider.OkHttpConnectionProvider$1.onFailure(OkHttpConnectionProvider.java:84)
        at okhttp3.internal.ws.RealWebSocket.failWebSocket(RealWebSocket.java:571)
        at okhttp3.internal.ws.RealWebSocket$2.onFailure(RealWebSocket.java:221)
        at okhttp3.RealCall$AsyncCall.execute(RealCall.java:215)
        at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
        at java.lang.Thread.run(Thread.java:764)
     Caused by: java.net.UnknownServiceException: CLEARTEXT communication to 192.168.1.6 not permitted by network security policy
        at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:147)
        at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:257)
        at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
        at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:254)
        at okhttp3.RealCall$AsyncCall.execute(RealCall.java:200)
        at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) 
        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)

[pointphoton]

Please, check this: https://stackoverflow.com/questions/45940861/android-8-cleartext-http-traffic-not-permitted

[testGumar]

Use this library its working fine, replace server url and port with your custom server url and your port. https://github.com/SayyedUmar/Stomp-Android-Client