curl_share_setopt(3) libcurl Manual curl_share_setopt(3)NAMEcurl_share_setopt - Set options for a shared object
SYNOPSIS
#include <curl/curl.h>
CURLSHcode curl_share_setopt(CURLSH *share, CURLSHoption option, param-
eter);
DESCRIPTION
Set the option to parameter for the given share.
OPTIONS
CURLSHOPT_LOCKFUNC
The parameter must be a pointer to a function matching the fol-
lowing prototype:
void lock_function(CURL *handle, curl_lock_data data,
curl_lock_access access, void *userptr);
data defines what data libcurl wants to lock, and you must make
sure that only one lock is given at any time for each kind of
data.
access defines what access type libcurl wants, shared or single.
userptr is the pointer you set with CURLSHOPT_USERDATA.
CURLSHOPT_UNLOCKFUNC
The parameter must be a pointer to a function matching the fol-
lowing prototype:
void unlock_function(CURL *handle, curl_lock_data data, void
*userptr);
data defines what data libcurl wants to unlock, and you must
make sure that only one lock is given at any time for each kind
of data.
userptr is the pointer you set with CURLSHOPT_USERDATA.
CURLSHOPT_SHARE
The parameter specifies a type of data that should be shared.
This may be set to one of the values described below.
CURL_LOCK_DATA_COOKIE
Cookie data will be shared across the easy handles using
this shared object.
CURL_LOCK_DATA_DNS
Cached DNS hosts will be shared across the easy handles
using this shared object. Note that when you use the
multi interface, all easy handles added to the same multi
handle will share DNS cache by default without this
libcurl 7.10.7 8 Aug 2003 1
curl_share_setopt(3) libcurl Manual curl_share_setopt(3)
having to be used!
CURLSHOPT_UNSHARE
This option does the opposite of CURLSHOPT_SHARE. It specifies
that the specified parameter will no longer be shared. Valid
values are the same as those for CURLSHOPT_SHARE.
CURLSHOPT_USERDATA
The parameter allows you to specify a pointer to data that will
be passed to the lock_function and unlock_function each time it
is called.
RETURN VALUE
CURLSHE_OK (zero) means that the option was set properly, non-zero
means an error occurred as <curl/curl.h> defines. See the libcurl-
errors.3 man page for the full list with descriptions.
SEE ALSOcurl_share_cleanup(3), curl_share_init(3)libcurl 7.10.7 8 Aug 2003 2
