On Mon, 10 Dec 2007, saugata.das wrote:

> 2. In between due to some condition becoming true I need to stop the
> download. How do I go about it?

For your pleasure and since this truly is commonly asked question, I've just
now added it to the FAQ:

         http://curl.haxx.se/docs/faq.html#How_do_I_stop_an_ongoing_transfe

I hope it answers the question good enough!

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  Commercial curl and libcurl Technical Support: http://haxx.se/curl.html