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From "Menno van Gangelen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HTTPASYNC-6) I/O reactor (client) terminates abnormally when a connection is prematurely closed probably because of timeout settings. A NullpointerException is thrown when a response is being read and the connection is already closed and set to null
Date Sat, 03 Sep 2011 09:56:09 GMT
I/O reactor (client) terminates abnormally when a connection is prematurely closed probably
because of timeout settings. A NullpointerException is thrown when a response is being read
and the connection is already closed and set to null
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

                 Key: HTTPASYNC-6
                 URL: https://issues.apache.org/jira/browse/HTTPASYNC-6
             Project: HttpComponents HttpAsyncClient
          Issue Type: Bug
    Affects Versions: 4.0-alpha2
         Environment: Windows Vista , Sun Java SDK 1.6.0_26
            Reporter: Menno van Gangelen
            Priority: Critical


The following line should have a check for null.

org.apache.http.impl.nio.client.DefaultAsyncRequestDirector.responseCompleted(DefaultAsyncRequestDirector.java:366);
=>           if (this.managedConn.isOpen()) {

Hard to reproduce as it seems to be a racing issue when reading from slow websites.

2011-09-03 10:40:53,312 [I/O dispatcher 2] ERROR DefaultHttpAsyncClient - Fatal runtime error
java.lang.NullPointerException
	at org.apache.http.impl.nio.client.DefaultAsyncRequestDirector.responseCompleted(DefaultAsyncRequestDirector.java:366)
	at org.apache.http.impl.nio.client.NHttpClientProtocolHandler.processResponse(NHttpClientProtocolHandler.java:357)
	at org.apache.http.impl.nio.client.NHttpClientProtocolHandler.inputReady(NHttpClientProtocolHandler.java:196)
	at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:172)
	at org.apache.http.impl.nio.client.InternalClientEventDispatch.inputReady(InternalClientEventDispatch.java:76)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:161)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:335)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:275)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:542)
	at java.lang.Thread.run(Thread.java:662)
2011-09-03 10:40:53,692 [Thread-4] ERROR DefaultHttpAsyncClient - I/O reactor terminated abnormally
org.apache.http.nio.reactor.IOReactorException: I/O dispatch worker terminated abnormally
	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:321)
	at org.apache.http.impl.nio.conn.PoolingClientConnectionManager.execute(PoolingClientConnectionManager.java:91)
	at org.apache.http.impl.nio.client.AbstractHttpAsyncClient.doExecute(AbstractHttpAsyncClient.java:441)
	at org.apache.http.impl.nio.client.AbstractHttpAsyncClient.access$000(AbstractHttpAsyncClient.java:95)
	at org.apache.http.impl.nio.client.AbstractHttpAsyncClient$1.run(AbstractHttpAsyncClient.java:462)
Caused by: java.lang.NullPointerException
	at org.apache.http.impl.nio.client.DefaultAsyncRequestDirector.responseCompleted(DefaultAsyncRequestDirector.java:366)
	at org.apache.http.impl.nio.client.NHttpClientProtocolHandler.processResponse(NHttpClientProtocolHandler.java:357)
	at org.apache.http.impl.nio.client.NHttpClientProtocolHandler.inputReady(NHttpClientProtocolHandler.java:196)
	at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:172)
	at org.apache.http.impl.nio.client.InternalClientEventDispatch.inputReady(InternalClientEventDispatch.java:76)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:161)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:335)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:275)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104)
	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:542)
	at java.lang.Thread.run(Thread.java:662)


Subsequent calls fail with the following exception
java.util.concurrent.ExecutionException: java.lang.IllegalStateException: Client has been
shut down

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