On Thu, 7 Jan 2010, centrio_at_gmail.com wrote:

>> if (CONNECTIONSTATE_CONNECT == state)
>
> #How does your program know/guess what state the handle is in?
>
> Initially the application when receives a URL to connect to, its in Connect
> state. I switch to Data state once I get atleast one Data callback.
> (WRITE_DATA).

Ok, fair enough, but you cannot make assumptions on the significance of a
timeout during the "connect" state like you did. Your "connect" state is doing
a lot more than just connecting. Or put another way: your connect state
involves a lot of different steps and network actions within libcurl.

>> I have a timeout of 1 second for select call on curl FD's. For some URLsThe
>> select call returns before 1 second but no callbacks get called.
>
> #That's normal and expected.
>
> If select is returning before 1 second, (no timeout) then it mean it has
> returned because it has observed some change on FD's.

Exactly.

> Now if some FD's have changed, callbacks should get called.

Not necessarily, no. But maybe.

> My question is, why callbacks dont get called even if FD's have change?

Because there wasn't traffic enough to cause a callback to get called? What
callback were you expecting that didn't get called?

-- 
  / daniel.haxx.se
-------------------------------------------------------------------
List admin: http://cool.haxx.se/list/listinfo/curl-library
Etiquette:  http://curl.haxx.se/mail/etiquette.html