NAME

       CURLSHOPT_SHARE - add data to share

SYNOPSIS

       #include <curl/curl.h>

       CURLSHcode curl_share_setopt(CURLSH *share, CURLSHOPT_SHARE, long type);

DESCRIPTION

       The  type  parameter  specifies  what  specific data that should be shared and kept in the
       share object that was created with curl_share_init(3).  The given type must be be  one  of
       the  values  described below. You can set CURLSHOPT_SHARE(3) multiple times with different
       data arguments to have the share object share multiple types of data. Unset a  type  again
       by setting CURLSHOPT_UNSHARE(3).

       CURL_LOCK_DATA_COOKIE
              Cookie  data will be shared across the easy handles using this shared object.  Note
              that this does not activate an easy handle's  cookie  handling.  You  can  do  that
              separately by using CURLOPT_COOKIEFILE(3) for example.

       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 using this option.

       CURL_LOCK_DATA_SSL_SESSION
              SSL  session  IDs  will be shared across the easy handles using this shared object.
              This will reduce the time spent in the SSL handshake when reconnecting to the  same
              server.  Note  SSL  session  IDs are reused within the same easy handle by default.
              Note this symbol was added in 7.10.3 but was not implemented until 7.23.0.

       CURL_LOCK_DATA_CONNECT
              Put the connection cache in the share object and make all easy handles  using  this
              share object share the connection cache.

              It is not supported to share connections between multiple concurrent threads.

              Connections  that  are used for HTTP/1.1 Pipelining or HTTP/2 multiplexing only get
              additional transfers added to them if the existing connection is held by  the  same
              multi  or  easy  handle. libcurl does not support doing HTTP/2 streams in different
              threads using a shared connection.

              Support for CURL_LOCK_DATA_CONNECT was added in  7.57.0,  but  the  symbol  existed
              before this.

              Note  that  when  you  use  the multi interface, all easy handles added to the same
              multi handle will share connection cache by default without using this option.

       CURL_LOCK_DATA_PSL
              The Public Suffix List stored in the share object is made  available  to  all  easy
              handle  bound to the later. Since the Public Suffix List is periodically refreshed,
              this avoids updates in too many different contexts.

              Added in 7.61.0.

              Note that when you use the multi interface, all easy  handles  added  to  the  same
              multi handle will share PSL cache by default without using this option.

       CURL_LOCK_DATA_HSTS
              The in-memory HSTS cache.

              It is not supported to share the HSTS between multiple concurrent threads.

              Added in 7.88.0

PROTOCOLS

       All

EXAMPLE

         CURLSHcode sh;
         share = curl_share_init();
         sh = curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_COOKIE);
         if(sh)
           printf("Error: %s\n", curl_share_strerror(sh));

AVAILABILITY

       Added in 7.10

RETURN VALUE

       CURLSHE_OK  (zero)  means  that  the  option  was  set  properly,  non-zero means an error
       occurred. See libcurl-errors(3) for the full list with descriptions.

SEE ALSO

       CURLSHOPT_UNSHARE(3), curl_share_setopt(3), curl_share_cleanup(3), curl_share_init(3)