NAME

       CURLOPT_CLOSESOCKETDATA - pointer passed to the socket close callback

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CLOSESOCKETDATA,
                                 void *pointer);

DESCRIPTION

       Pass  a  pointer that remains untouched by libcurl and passed as the first argument in the
       closesocket callback set with CURLOPT_CLOSESOCKETFUNCTION(3).

DEFAULT

       The default value of this parameter is NULL.

PROTOCOLS

       All except file:

EXAMPLE

       struct priv {
         void *custom;
       };

       static int closesocket(void *clientp, curl_socket_t item)
       {
         struct priv *my = clientp;
         printf("our ptr: %p\n", my->custom);

         printf("libcurl wants to close %d now\n", (int)item);
         return 0;
       }

       int main(void)
       {
         struct priv myown;
         CURL *curl = curl_easy_init();

         /* call this function to close sockets */
         curl_easy_setopt(curl, CURLOPT_CLOSESOCKETFUNCTION, closesocket);
         curl_easy_setopt(curl, CURLOPT_CLOSESOCKETDATA, &myown);

         curl_easy_perform(curl);
         curl_easy_cleanup(curl);
       }

AVAILABILITY

       Added in 7.21.7

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_CLOSESOCKETFUNCTION(3), CURLOPT_OPENSOCKETFUNCTION(3)