Tomcat hang when call HttpURLConnection.connect() in init()

[Stanley_Lee <ma...@yahoo.com>]

I try to detect another web application's accessibility in Servlet's init()
method: 
URL url = new URL("http://localhost:8080/xyz");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.connect();

When application "xyz" is NOT available, above code:
- runs fine in standalone Java application (return File-not-found exception)
- runs fine if deploy to a running Tomcat

but it will hang Tomcat startup if it is in /web-apps while Tomcat restart.
I have to manually kill Tomcat process, then log will show ConnectException.
Looks like Tomcat is waiting on that connect() call.

Is there any work-around or better way to detect app's availability?

Thanks for any suggestion!

Stanley
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