I'm getting this error "java.lang.NullPointerException: Inflater has been closed" randomly and I don't know why

[FranAguiar]

When I execute the tests suite I'm getting this error, not always and the tests doesn't fail. But is weird

java.lang.NullPointerException: Inflater has been closed
at java.util.zip.Inflater.ensureOpen(Inflater.java:389)
at java.util.zip.Inflater.inflate(Inflater.java:257)
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:152)
at java.util.zip.GZIPInputStream.read(GZIPInputStream.java:117)
at org.apache.http.client.entity.LazyDecompressingInputStream.read(LazyDecompressingInputStream.java:73)
at com.machinepublishers.jbrowserdriver.Util.toBytes(Util.java:98)
at com.machinepublishers.jbrowserdriver.ResponseHandler.handleResponse(ResponseHandler.java:52)
at com.machinepublishers.jbrowserdriver.StreamConnection.getInputStream(StreamConnection.java:402)
at com.sun.webkit.network.URLLoader.receiveResponse(URLLoader.java:501)
at com.sun.webkit.network.URLLoader.doRun(URLLoader.java:163)
at com.sun.webkit.network.URLLoader.lambda$run$98(URLLoader.java:128)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.webkit.network.URLLoader.run(URLLoader.java:127)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

In addition, sometimes this too

java.io.IOException: server certificate change is restricted during renegotiation: https://cdn.jsdelivr.net/webshim/1.12.4/extras/modernizr-custom.js
at com.machinepublishers.jbrowserdriver.StreamConnection.exec(StreamConnection.java:361)
at com.machinepublishers.jbrowserdriver.StreamConnection.getResponseCode(StreamConnection.java:441)
at com.sun.webkit.network.URLLoader.receiveResponse(URLLoader.java:420)
at com.sun.webkit.network.URLLoader.doRun(URLLoader.java:164)
at com.sun.webkit.network.URLLoader.lambda$run$94(URLLoader.java:129)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.webkit.network.URLLoader.run(URLLoader.java:128)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.net.ssl.SSLHandshakeException: server certificate change is restricted during renegotiation
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1949)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:302)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:292)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1471)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:979)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:914)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1062)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387)
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:394)
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:353)
at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:141)
at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:353)
at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:380)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at com.machinepublishers.jbrowserdriver.StreamConnectionClient.execute(StreamConnectionClient.java:175)
at com.machinepublishers.jbrowserdriver.StreamConnection.exec(StreamConnection.java:327)

It is a browser issue or something that I can handle? Thanks

[hollingsworthd]

Not sure on the ssl one. The java.lang.NullPointerException: Inflater has been closed problem I've seen too. Could not pinpoint a cause yet. Googling reveals other Java projects have experienced this too but haven't seen any resolutions. Not sure yet whether it's normal for http traffic or something to worry about.

[RagulkumarRaj]

I have also seen this error couple of times. But the catch is that, if at all I wait for some time after the error occurs for the driver to quit, the complete page is downloaded.

[hollingsworthd]

Combining this with #242