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Index › Programming Questions & Help › Syntax Questions › Timeout of loadimage()
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Timeout of loadimage() (Read 662 times)
tropico
Timeout of loadimage()
Jul 22nd, 2005, 2:04am  
What is the best way of adding a timeout function to loadimage()? I'm loading images from unknown hosts and some might be to slow and has to be canceled after a minute or so if not finished.
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tropico
Re: Timeout of loadimage()
Reply #1 - Jul 22nd, 2005, 10:52pm  
Ok I solved it for now with a parameter passed to java since I can have it running like that for now. I think that I will try the threading stuff mentioned later on (I dont have the time at the moment)

From what I can see one way is to load the image in a thread allowing me to stop it when I want.
Another way (if run from command line and java >1.4.something) is to use the  -Dsun.net.client.defaultReadTimeout switch and catch the exception.

sun.net.client.defaultConnectTimeout (default: -1)
sun.net.client.defaultReadTimeout (default: -1)
http://java.sun.com/j2se/1.4.2/docs/guide/net/properties.html

Here are some other resources that seems useful.
http://forum.java.sun.com/thread.jspa?messageID=3730209
http://coding.derkeiler.com/Archive/Java/comp.lang.java.programmer/2004-01/3271.html
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mflux
Re: Timeout of loadimage()
Reply #2 - Jan 20th, 2007, 3:23am  
sorry to dig this back up from the grave...

I'm running into the same problem however containing it in a thread doesn't help. Timeout exceptions doesn't get caught by try/catch when you do loadImage() and it generally crashes everything or makes further netloading impossible.

I don't quite get the examples you've posted following the thread idea. Can you please elaborate, if you've tried those? They look like re-writes for the network library, I'm not sure exactly how we could implement those into our processing apps.

Thanks!
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