Hey
Responding to a forwarded message and I'm not subscribed. Excuse the
formatting. I'm the lead developer of libcurl and was asked to comment on
this.
From: Alex Balashov <[email protected]>
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_function);
As far as I can tell from how write_function() is constructed, it expects
to be called once:
1) Does this function need to be rewritten to realloc() and concatenate?
Yes. libcurl will deliver data to the callback as soon as it has read some off
the network, it can thus deliver one byte at a time during slow conditions or
a whole bunch. It will keep calling the callback as long as data is coming.
This is also documented in the man page:
http://curl.haxx.se/libcurl/c/CURLOPT_WRITEFUNCTION.html
2) Is there an option in CURL that can use internal buffering and only
invoke the callback once all the response chunks are received?
Nope.
3) Would increasing the curl.h constant CURL_MAX_WRITE_SIZE help?
No. That would just make libcurl able to read a larger chunk from the socket
into its own buffer, but it wouldn't prevent it from calling the callback one
or many times.
--
/ daniel.haxx.se
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