Android : what are the causes for java.net.SocketException: Connection timed out?

android socketexception
Srinivas picture Srinivas · Apr 19, 2011 · Viewed 7k times · Source

In my application am downloading loads o data . every thing fine but some it was giving wierd response and throwing socketException : connectiontimout?

please can any one tell me what are the reasons for these exception ? so that i can figure out problem ?

Gimme some solution to avoid these kind of exceptions

Here log goes ............

**

04-19 15:44:52.591: WARN/System.err(18199): java.net.SocketException: Connection timed out
04-19 15:44:52.591: WARN/Smack/Packet(209): notify conn break (IOEx), close connection
04-19 15:44:52.591: DEBUG/Smack(209): [XMPPConn] close connection, notifyClosed=false
04-19 15:44:52.591: WARN/System.err(18199):     at org.apache.harmony.luni.platform.OSNetworkSystem.read(Native Method)
04-19 15:44:52.591: WARN/System.err(18199):     at dalvik.system.BlockGuard$WrappedNetworkSystem.read(BlockGuard.java:273)
04-19 15:44:52.591: WARN/System.err(18199):     at org.apache.harmony.luni.net.PlainSocketImpl.read(PlainSocketImpl.java:458)
04-19 15:44:52.591: WARN/System.err(18199):     at org.apache.harmony.luni.net.SocketInputStream.read(SocketInputStream.java:85)
04-19 15:44:52.591: WARN/System.err(18199):     at java.io.BufferedInputStream.read(BufferedInputStream.java:319)
04-19 15:44:52.591: WARN/System.err(18199):     at org.apache.harmony.luni.internal.net.www.protocol.http.FixedLengthInputStream.read(FixedLengthInputStream.java:44)
04-19 15:44:52.591: WARN/System.err(18199):     at java.io.BufferedInputStream.read(BufferedInputStream.java:319)
04-19 15:44:52.591: WARN/System.err(18199):     at java.io.FilterInputStream.read(FilterInputStream.java:133)
04-19 15:44:52.591: WARN/System.err(18199):     at com.logictreeit.pilot.utils.Download.Download1(Download.java:245)
04-19 15:44:52.591: WARN/System.err(18199):     at com.logictreeit.pilot.utils.Download.access$4(Download.java:225)
04-19 15:44:52.591: WARN/System.err(18199):     at com.logictreeit.pilot.utils.Download$DownloadTask.doInBackground(Download.java:171)
04-19 15:44:52.591: WARN/System.err(18199):     at com.logictreeit.pilot.utils.Download$DownloadTask.doInBackground(Download.java:1)
04-19 15:44:52.591: WARN/System.err(18199):     at android.os.AsyncTask$2.call(AsyncTask.java:185)
04-19 15:44:52.591: WARN/System.err(18199):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
04-19 15:44:52.591: WARN/System.err(18199):     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
04-19 15:44:52.591: WARN/System.err(18199):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
04-19 15:44:52.591: WARN/System.err(18199):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
04-19 15:44:52.591: WARN/System.err(18199):     at java.lang.Thread.run(Thread.java:1019)

**

Regards, Srinivas

Answer

emmby picture emmby · Apr 19, 2011

"Connection timed out" is an expected behavior in a network environment. It's even more expected in a mobile environment, where network connections can be unreliable. It means that the server failed to respond for a certain number of seconds.

Because it's normal behavior, you'll need to handle it in your android application. Either attempt to retry, display an error message to your user, or do something else appropriate.

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