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 is 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 are 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 share DNS cache by
              default without using this option.

       CURL_LOCK_DATA_SSL_SESSION
              SSL session IDs are shared across the easy handles using this shared object. This reduces 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 shares
              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 shares
              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

       int main(void)
       {
         CURLSHcode sh;
         CURLSH *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

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

ibcurl 8.5.0                                    December 04, 2023                             CURLSHOPT_SHARE(3)