java.net.socketexception: The operation timed out problem in android?

Question

In my application i wrote code for connecting to the URL like below

InputStream inputStream = new URL(url).openStream();

i got the error.Iam sending my logcat

12-17 15:06:55.065: WARN/System.err(4952): java.net.SocketException: The operation timed out
12-17 15:06:55.065: WARN/System.err(4952):     at org.apache.harmony.luni.platform.OSNetworkSystem.connectStreamWithTimeoutSocketImpl(Native Method)
12-17 15:06:55.065: WARN/System.err(4952):     at org.apache.harmony.luni.platform.OSNetworkSystem.connect(OSNetworkSystem.java:115)
12-17 15:06:55.065: WARN/System.err(4952):     at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:244)
12-17 15:06:55.075: WARN/System.err(4952):     at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:533)
12-17 15:06:55.075: WARN/System.err(4952):     at java.net.Socket.connect(Socket.java:1055)
12-17 15:06:55.075: WARN/System.err(4952):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:62)
12-17 15:06:55.075: WARN/System.err(4952):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:88)
12-17 15:06:55.075: WARN/System.err(4952):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHTTPConnection(HttpURLConnectionImpl.java:927)
12-17 15:06:55.085: WARN/System.err(4952):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:909)
12-17 15:06:55.085: WARN/System.err(4952):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:1152)
12-17 15:06:55.085: WARN/System.err(4952):     at java.net.URL.openStream(URL.java:653)

How to solve this problem

what's the url? Are you sure your server is up?

Vladimir Ivanov
– Vladimir Ivanov

2010-12-17 12:36:02 +00:00
Commented Dec 17, 2010 at 12:36 — Vladimir Ivanov
– Vladimir Ivanov, Commented Dec 17, 2010 at 12:36
is the server reachable and does it accept connections?

mad
– mad

2010-12-17 12:36:30 +00:00
Commented Dec 17, 2010 at 12:36 — mad
– mad, Commented Dec 17, 2010 at 12:36
yes my server is up and this error comes some times only

ADIT
– ADIT

2010-12-17 12:57:26 +00:00
Commented Dec 17, 2010 at 12:57 — ADIT
– ADIT, Commented Dec 17, 2010 at 12:57

kgiannakakis · Accepted Answer · 2010-12-17 15:56:18Z

This is happening because some times your server is taking too long to respond. Actually this could also happening due to a slow network, so you don't have full control over it. If you were using HttpClient, you could increase the timeout period:

HttpParams httpParameters = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParameters, CONNECTION_TIMEOUT);
HttpConnectionParams.setSoTimeout(httpParameters, WAIT_RESPONSE_TIMEOUT);
HttpConnectionParams.setTcpNoDelay(httpParameters, true);

client = new DefaultHttpClient(httpParameters);

CONNECTION_TIMEOUT is the time to wait for a connection to establish. WAIT_RESPONSE_TIMEOUT is the time to wait for data to be received - in your case this is what you need to increase.

Bottom line:

Stop using URL and start using HttpClient now.
The situation you are describing is a very common one in a production application and you need to cater for it. Increasing the timeout won't always help, as your application will appear to halt when there is a slow network. You could add a retry mechanism or inform the user that the request has failed and ask him to try again.

Sterling Diaz · Accepted Answer · 2012-09-06 02:39:11Z

0

Also, I had the case that you are passing a wrong url, and the app is looking to retrieve the data, but never finds it. Check your url, maybe if you correct it, just in case that it would be wrong, then the request would not throws you that error.

answered Sep 6, 2012 at 2:39

Sterling Diaz

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