curl_easy_duphandle(3) libcurl Manual 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 sub-
sequently 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 * in-
puts, 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 ob-
ject 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 synchro-
nous 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 7.81.0 November 26, 2021 curl_easy_duphandle(3)
Generated by dwww version 1.14 on Sat Jan 18 08:15:57 CET 2025.