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curl_multi_add_handle(3)

curl_multi_add_handle(3)        libcurl Manual        curl_multi_add_handle(3)

NAME
       curl_multi_add_handle - add an easy handle to a multi session

SYNOPSIS
       #include <curl/curl.h>

       CURLMcode curl_multi_add_handle(CURLM *multi_handle, CURL *easy_handle);

DESCRIPTION
       Adds a standard easy handle to the multi stack. This function call will
       make this multi_handle control the specified easy_handle.

       While an easy handle is added to a multi stack, you cannot and you must
       not  use  curl_easy_perform(3) on that handle. After having removed the
       easy handle from the multi stack again, it is perfectly fine to use  it
       with the easy interface again.

       If  the  easy  handle  is not set to use a shared (CURLOPT_SHARE(3)) or
       global DNS cache (CURLOPT_DNS_USE_GLOBAL_CACHE(3)), it will be made  to
       use  the  DNS  cache that is shared between all easy handles within the
       multi handle when curl_multi_add_handle(3) is called.

       When an easy interface is added to a multi handle, it will use a shared
       connection cache owned by the multi handle.  Removing  and  adding  new
       easy  handles will not affect the pool of connections or the ability to
       do connection re-use.

       If you have CURLMOPT_TIMERFUNCTION(3) set in the multi handle (and  you
       really should if you are working event-based with curl_multi_socket_ac‐
       tion(3)  and  friends),  that  callback will be called from within this
       function to ask for an updated timer so that your main event loop  will
       get the activity on this handle to get started.

       The  easy handle will remain added to the multi handle until you remove
       it again with curl_multi_remove_handle(3) - even when a  transfer  with
       that specific easy handle is completed.

       You  should remove the easy handle from the multi stack before you ter‐
       minate first the easy handle and then the multi handle:

       1 - curl_multi_remove_handle(3)

       2 - curl_easy_cleanup(3)

       3 - curl_multi_cleanup(3)

EXAMPLE
         /* init a multi stack */
         multi_handle = curl_multi_init();

         /* add individual transfers */
         curl_multi_add_handle(multi_handle, http_handle);
         curl_multi_add_handle(multi_handle, http_handle2);

AVAILABILITY
       Added in 7.9.6

RETURN VALUE
       CURLMcode type, general libcurl multi interface error code.

SEE ALSO
       curl_multi_cleanup(3),curl_multi_init(3),         curl_multi_setopt(3),
       curl_multi_socket_action(3)

libcurl 7.86.0                September 20, 2022      curl_multi_add_handle(3)
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