Re: Stopping an NSThread (or something similar)
Re: Stopping an NSThread (or something similar)
- Subject: Re: Stopping an NSThread (or something similar)
- From: Nir Soffer <email@hidden>
- Date: Fri, 14 Jul 2006 05:23:21 +0300
On 14/07/2006, at 04:35, Michael Becker wrote:
Sorry for the forwarding, I used the wrong e-mail account to send
this e-mail before...
Anfang der weitergeleiteten E-Mail:
Hi,
my application is designed to upload files via an HTTP POST
request. I am using libcurl to do this, as libcurl allows me to
monitor the upload progress (which NSURLConnection obviously does
not). However, I am having a problem: Naturally, I want the user
to be able to click a button to immediately stop the upload. I am
uploading the files in a secondary thread. If I use the good ol'
technique that's using a BOOL variable to tell the secondary
thread to stop, this won't work properly as the thread will only
be able to check the variable between file uploads. So if the user
triggers a 10 MB upload and wants to stop that, they will have to
wait until the 10 MBs are uploaded before the thread stops.
The thing is, that I cannot interfere with the uploading (I
guess). I simply call "curl_easy_perform()" and off it goes. The
problem I've posted here to me seems to be one of the more
fundamental "things-everybody-needs". E.g., Safari allows you to
stop the download of files, too. So does more or less any
networking application I can think of right now.
How are they doing that?
Regards,
Michael
PS: Remember: I am talking about UPloading files. DOWNloading
actually seems to be supported very well and boasting any feature
you'd ever wish for...
I think you can stop the upload by returning 0 from your read callback.
Best Regards,
Nir Soffer
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