curl_easy_duphandle - Clone a libcurl session handle
#include <curl/curl.h> CURL *curl_easy_duphandle(CURL *handle);
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 *
inputs, will be pointed to by the new handle as well. You must there-
fore 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 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.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | web/curl |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
SEE ALSO
curl_easy_init(3),curl_easy_cleanup(3),curl_easy_reset(3),
curl_global_init(3)
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from https://curl.se/down-
load/curl-7.83.1.tar.bz2.
Further information about this software can be found on the open source
community website at http://curl.haxx.se/.
libcurl 7.83.1 November 26, 2021 curl_easy_duphandle(3)