Android NativeCall crashes on Join

[cshzh]

Log below:

02-04 19:24:12.171 21791-21791/? W/Zygote: mz_is_rooted false
02-04 19:24:12.171 21791-21791/? I/art: Late-enabling -Xcheck:jni
02-04 19:24:12.221 21791-21805/? I/art: Debugger is no longer active
02-04 19:24:12.261 21791-21791/? I/InstantRun: Instant Run Runtime started. Android package is com.ericsson.research.owr.examples.nativecall, real application class is null.
02-04 19:24:12.581 21791-21818/? I/OpenGLRenderer: Initialized EGL, version 1.4
02-04 19:24:40.751 21791-22297/com.ericsson.research.owr.examples.nativecall I/System.out: httpget:http://demo.openwebrtc.org/stoc/24ade3bc072/f9rk32mk
02-04 19:24:40.751 21791-21816/com.ericsson.research.owr.examples.nativecall I/OpenWebRTC: [435]: JNI: successfully attached to thread
02-04 19:24:40.761 21791-21791/com.ericsson.research.owr.examples.nativecall W/libOpenSLES: Leaving Object::GetInterface (SL_RESULT_FEATURE_UNSUPPORTED)
02-04 19:24:41.131 21791-22297/com.ericsson.research.owr.examples.nativecall I/System.out: >doSendRequest
02-04 19:24:41.131 21791-22297/com.ericsson.research.owr.examples.nativecall I/System.out: <doSendRequest
02-04 19:24:41.391 21791-22414/com.ericsson.research.owr.examples.nativecall E/libEGL: call to OpenGL ES API with no current context (logged once per thread)
02-04 19:24:41.401 21791-22297/com.ericsson.research.owr.examples.nativecall I/NetworkManagementSocketTagger: untagSocket(52)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall I/NetworkManagementSocketTagger: untagSocket(52)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall E/EventSource: SSE: javax.net.ssl.SSLPeerUnverifiedException: No peer certificate
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: javax.net.ssl.SSLPeerUnverifiedException: No peer certificate
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at com.android.org.conscrypt.SSLNullSession.getPeerCertificates(SSLNullSession.java:104)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at org.apache.http.conn.ssl.AbstractVerifier.verify(AbstractVerifier.java:98)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at org.apache.http.conn.ssl.SSLSocketFactory.createSocket(SSLSocketFactory.java:393)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:175)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:169)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:124)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:365)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:586)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:511)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:489)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at com.ericsson.research.owr.examples.nativecall.SignalingChannel$1.run(SignalingChannel.java:95)
02-04 19:24:42.131 21791-22297/com.ericsson.research.owr.examples.nativecall W/System.err: at java.lang.Thread.run(Thread.java:818)
02-04 19:24:42.141 21791-21791/com.ericsson.research.owr.examples.nativecall E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.ericsson.research.owr.examples.nativecall, PID: 21791
java.lang.NullPointerException: Attempt to invoke interface method 'void com.ericsson.research.owr.sdk.RtcSession.stop()' on a null object reference
at com.ericsson.research.owr.examples.nativecall.NativeCallExampleActivity.onDisconnect(NativeCallExampleActivity.java:344)
at com.ericsson.research.owr.examples.nativecall.SignalingChannel$1$1.run(SignalingChannel.java:121)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5566)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:962)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
02-04 19:24:42.151 21791-21816/com.ericsson.research.owr.examples.nativecall I/g_log: _owr_media_source_release_source: assertion 'GST_IS_ELEMENT(source)' failed
02-04 19:24:42.181 21791-21791/com.ericsson.research.owr.examples.nativecall I/Process: Sending signal. PID: 21791 SIG: 9

[alagarsamy101189]

Confirm whether your web server has peer certificate.