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I've currently got an app that has high throughput and I'm using httpClient 4.3.3 provided by Apache themselves. I have an issue where I keep getting an InterruptedIOException after a while. The cause is a ConnectionShutdownException. I'm wondering if anyone has any insight on why this would happen.

I've tracked down that the error is being thrown in the CPoolProxy line 135. It seems like the getConnection() call fails due to the fact that the poolEntry used to create the CPoolEntry is null.

Now I do have a thread that cleans up the expired and timeout connections and timeouts are set for the connections/sockets. I'm at a loss right now. Here's the stack trace:

06-20 21:45:01.424: W/System.err(22978): java.io.InterruptedIOException: Connection has been shut down
06-20 21:45:01.424: W/System.err(22978):    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:337)
06-20 21:45:01.424: W/System.err(22978):    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)
06-20 21:45:01.424: W/System.err(22978):    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)
06-20 21:45:01.424: W/System.err(22978):    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
06-20 21:45:01.424: W/System.err(22978):    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:186)
06-20 21:45:01.424: W/System.err(22978):    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
06-20 21:45:01.424: W/System.err(22978):    at com.loopj.android.http.core.AsyncHttpRequest.makeRequest(AsyncHttpRequest.java:98)
06-20 21:45:01.434: W/System.err(22978):    at com.loopj.android.http.core.AsyncHttpRequest.run(AsyncHttpRequest.java:68)
06-20 21:45:01.434: W/System.err(22978):    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
06-20 21:45:01.434: W/System.err(22978):    at java.util.concurrent.FutureTask.run(FutureTask.java:237)
06-20 21:45:01.434: W/System.err(22978):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
06-20 21:45:01.434: W/System.err(22978):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
06-20 21:45:01.434: W/System.err(22978):    at java.lang.Thread.run(Thread.java:841)
06-20 21:45:01.434: W/System.err(22978): Caused by: org.apache.http.impl.conn.ConnectionShutdownException
06-20 21:45:01.444: W/System.err(22978):    at org.apache.http.impl.conn.CPoolProxy.invoke(CPoolProxy.java:135)
06-20 21:45:01.444: W/System.err(22978):    at $Proxy0.getSSLSession(Native Method)
06-20 21:45:01.444: W/System.err(22978):    at org.apache.http.impl.client.DefaultUserTokenHandlerHC4.getUserToken(DefaultUserTokenHandlerHC4.java:80)
06-20 21:45:01.444: W/System.err(22978):    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:320)
06-20 21:45:01.444: W/System.err(22978):    ... 12 more

Apart from this random hiccup everything works well. It happens at random and all other calls seem to continue as if nothing happens

Etienne
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  • the thread **Now I do have a thread that cleans up the expired and timeout connections** must me clearing closing the thread that is performing network operations – Illegal Argument Jun 21 '14 at 05:48
  • The reason I've implemented this thread was initially to solve this issue. I thought the Connection Manager was leaking connections but I was wrong. Even without it I'm seeing this issue. – Etienne Jun 23 '14 at 04:08

1 Answers1

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As Per This Document

http://docs.oracle.com/javase/7/docs/api/java/io/InterruptedIOException.html

InterruptedIOException

Signals that an I/O operation has been interrupted. An InterruptedIOException is thrown to indicate that an input or output transfer has been terminated because the thread performing it was interrupted. The field bytesTransferred indicates how many bytes were successfully transferred before the interruption occurred.

Pragnesh Ghoda シ
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