URLConnection not timing out as expected

[StephenS]

Hi all,

This is my first post in what looks to be a great forum on java development. I look forward to contributing and getting help!

I am working on a project where I must validate a large number of urls contained in a database (50,000+ urls). I have developed a java application to do the validating for me using Java 1.5 on AIX UNIX.

I am having problems with some of the urls where they are no longer valid. The httpConnection.connect() part of the code seems to hang. I have set connection.setConnectTimeout(2000) in an attempt to have the connection timeout after two seconds. However, the connection takes over 2 minutes to eventually time out. The java error that I'm receiving is:

java.net.SocketException: Unexpected end of file from server
at sun.net.http://www.http.HttpClient.parseHTTP...lient.java:736)
at sun.net.http://www.http.HttpClient.parseHTTP...lient.java:607)
at sun.net.http://www.http.HttpClient.parseHTTP...lient.java:734)
at sun.net.http://www.http.HttpClient.parseHTTP...lient.java:607)
at sun.net.http://www.protocol.http.HttpURLConn...ction.java:966)
at java.net.HttpURLConnection.getResponseCode(HttpURL Connection.java:379)
at ValidateURLs.main(ValidateURLs.java:94)

A shortened version of my code is as follows:

int connectionTimeout = 2000;

String processUrl = "http://hubbell.syndication.exaltsolutions.com/exalt/doc/Horizontal.PDF";
URL url = new URL(processUrl);
URLConnection connection = url.openConnection();
connection.setConnectTimeout(connectionTimeout);

try {
if (connection instanceof HttpURLConnection) {
HttpURLConnection httpConnection = (HttpURLConnection)connection;
httpConnection.connect();
int returnCode = httpConnection.getResponseCode();
httpConnection.disconnect();
} // if (connection instanceof HttpURLConnection) {

} catch (Exception e) {
e.printStackTrace();
}

What can I do to get the timeout to work?

Thank you!

-StephenS

[FON]

Look at this thread :

Socket Programming - java.net.SocketException: Unexpected end of file from server

[Steve11235]

I'm not certain, but... It sounds like you are establishing a connection, but that the response does not contain valid data, or no response is being sent. You may be attempting to create an HTTP connection to a URL that does not support HTTP. That could create a raw socket that would subsequently fail.