On Aug 11, 2010, at 3:06 AM, Dan Fandrich wrote:
On Wed, Aug 11, 2010 at 11:02:20AM +0800, frank chan wrote:
Please help me !
I've set all the params of easy curl downloading, such as speed
limit , url ,
and it seems all right . It is all ok to set speed limit at the
begining before
curl_easy_perform . But I need to change the speed limit during the
download
process , so I use
curl_easy_setopt(handle,CURLOPT_MAX_SEND_SPEED_LARGE,speed)
to set speed (from 100k to about 30k) , then the speed decrease to
0k for some
seconds and the connection breaks down . The problem will not
appear when I set
speed limit to a bigger one , like from 50k to 100k .
I want to know if it is sort of a bug of libcurl , please help me !
Options are generally not allowed to be set after a transfer begins.
That makes sense for most options (after all, what is libcurl
supposed to do
if a GET is converted to a POST in mid-transfer), but I can see how
it would
be handy to be able to change one like this.
Dan
I've had similar needs. I just ignored the libcurl provided facilities
and implemented a progress callback which would abort the operation if
my condition wasn't met. This is a bit of a pain since it seems like
it should work in your case but there is a way to get the job done
when your needs are dynamic like this. See CURLOPT_PROGRESSFUNCTION.
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