plucky (3) curl_easy_duphandle.3.gz

NAME

       curl_easy_duphandle - clone an easy handle

SYNOPSIS

       #include <curl/curl.h>

       CURL *curl_easy_duphandle(CURL *handle);

DESCRIPTION

       This  function  returns a new curl handle, a duplicate, using all the options previously set in the input
       curl handle. Both handles can subsequently be used  independently  and  they  must  both  be  freed  with
       curl_easy_cleanup(3).

       Any  options  that the input handle has been told to point to (as opposed to copy) with previous calls to
       curl_easy_setopt(3), are pointed to by the new handle as well. You must therefore make sure to  keep  the
       data around until both handles have been cleaned up.

       The new handle does not inherit any state information, no connections, no SSL sessions and no cookies. It
       also does not inherit any share object states or options (created  as  if  CURLOPT_SHARE(3)  was  set  to
       NULL).

       If  the  source  handle  has  HSTS  or  alt-svc  enabled, the duplicate gets data read data from the main
       filename to populate the cache.

       In multi-threaded programs, this function must be called in a synchronous way, the input handle  may  not
       be in use when cloned.

PROTOCOLS

       This functionality affects all supported protocols

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           CURL *nother;
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
           nother = curl_easy_duphandle(curl);
           res = curl_easy_perform(nother);
           curl_easy_cleanup(nother);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       Added in curl 7.9

RETURN VALUE

       If this function returns NULL, something went wrong and no valid handle was returned.

SEE ALSO

       curl_easy_cleanup(3), curl_easy_init(3), curl_easy_reset(3), curl_global_init(3)