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curl_easy_duphandle(3)              libcurl             curl_easy_duphandle(3)


NAME

       curl_easy_duphandle - Clone a libcurl session handle


SYNOPSIS

       #include <curl/curl.h>

       CURL *curl_easy_duphandle(CURL *handle);


DESCRIPTION

       This function will return 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).

       All strings that the input handle has been told to point to (as opposed
       to copy) with previous calls to curl_easy_setopt(3) using char *
       inputs, will be 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 will not inherit any state information, no connections,
       no SSL sessions and no cookies. It also will not inherit any share
       object states or options (it will be made as if CURLOPT_SHARE(3) was
       set to NULL).

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


EXAMPLE

       CURL *curl = curl_easy_init();
       CURL *nother;
       if(curl) {
         CURLcode res;
         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 7.9


RETURN VALUE

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


SEE ALSO

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

libcurl 8.1.2                   April 26, 2023          curl_easy_duphandle(3)

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