Hi,
I'm using the WebSocketClient in an Android app and I receive the following NullPointerException from some users:
java.lang.NullPointerException: ssl == null
at com.android.org.conscrypt.NativeCrypto.SSL_read_BIO(Native Method)
at com.android.org.conscrypt.OpenSSLEngineImpl.unwrap(OpenSSLEngineImpl.java:477)
at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:1014)
at org.java_websocket.SSLSocketChannel2.unwrap(SSLSocketChannel2.java:150)
at org.java_websocket.SSLSocketChannel2.processHandshake(SSLSocketChannel2.java:123)
at org.java_websocket.SSLSocketChannel2.write(SSLSocketChannel2.java:192)
at org.java_websocket.SocketChannelIOHelper.writeBlocking(SocketChannelIOHelper.java:76)
at org.java_websocket.client.WebSocketClient$WebsocketWriteThread.run(WebSocketClient.java:440)
at java.lang.Thread.run(Thread.java:818)
The exception was thrown on different devices and different versions of Android. I use the following configuration to initiate the secured WebSocket connection:
webSocketClient = new WebSocketClient(uri, new Draft_10(), headers, 0) {
...
}
try {
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, null, null);
webSocketClient.setWebSocketFactory(new DefaultSSLWebSocketClientFactory(sc));
webSocketClient.connect();
} catch (Exception e) {
...
}
I couldn't reproduce the issue on my debug devices. Any idea how I can avoid this or why it crashes sometimes? Can I catch the exception somehow? Looks like it is deeply nested in the library or Android itself.
Thanks
Hi,
I'm using the
WebSocketClientin an Android app and I receive the followingNullPointerExceptionfrom some users:The exception was thrown on different devices and different versions of Android. I use the following configuration to initiate the secured WebSocket connection:
I couldn't reproduce the issue on my debug devices. Any idea how I can avoid this or why it crashes sometimes? Can I catch the exception somehow? Looks like it is deeply nested in the library or Android itself.
Thanks