libcurl-share - phpMan

libcurl-share(3)            libcurl share interface           libcurl-share(3)



NAME
       libcurl-share - how to use the share interface

DESCRIPTION
       This  is  an overview on how to use the libcurl share interface in your C programs.
       There are specific man pages for each function mentioned in here.

       All functions in the share interface are prefixed with curl_share.


OBJECTIVES
       The share interface was added to enable sharing of data between curl "handles".

ONE SET OF DATA - MANY TRANSFERS
       You can have multiple easy handles share data between them. Have  them  update  and
       use the same cookie database or DNS cache! This way, each single transfer will take
       advantage from data updates made by the other transfer(s).

SHARE OBJECT
       You create a shared object with curl_share_init(3). It returns a handle for a newly
       created one.

       You   tell   the   shared   object  what  data  you  want  it  to  share  by  using
       curl_share_setopt(3). Currently you can only share DNS and/or COOKIE data.

       Since you can use this share from multiple threads, and  libcurl  has  no  internal
       thread  synchronization,  you  must  provide  mutex  callbacks if you’re using this
       multi-threaded. You set lock and unlock functions with curl_share_setopt(3) too.

       Then, you make an easy handle to use this share, you set the  CURLOPT_SHARE  option
       with curl_easy_setopt(3), and pass in share handle. You can make any number of easy
       handles share the same share handle.

       To make an easy handle stop using that particular share, you set  CURLOPT_SHARE  to
       NULL for that easy handle. To make a handle stop sharing a particular data, you can
       CURLSHOPT_UNSHARE it.

       When you’re done using the share, make sure that no easy handle is still using  it,
       and call curl_share_cleanup(3) on the handle.

SEE ALSO
       curl_share_init(3), curl_share_setopt(3), curl_share_cleanup(3)



libcurl 7.10.7                    8 Aug 2003                  libcurl-share(3)

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