NAME

       CURLINFO_LASTSOCKET - get the last socket used

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LASTSOCKET, long *socket);

DESCRIPTION

       Deprecated since 7.45.0. Use CURLINFO_ACTIVESOCKET(3) instead.

       Pass a pointer to a long to receive the last socket used by this curl session. If the socket is no longer
       valid,  -1  is  returned.  When you finish working with the socket, you must call curl_easy_cleanup(3) as
       usual and let libcurl close the socket and cleanup other resources associated with the  handle.  This  is
       typically used in combination with CURLOPT_CONNECT_ONLY(3).

       NOTE:  this  API  is  deprecated  since it is not working on win64 where the SOCKET type is 64 bits large
       while its 'long' is 32 bits. Use the CURLINFO_ACTIVESOCKET(3) instead, if possible.

PROTOCOLS

       All

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           long sockfd; /* does not work on win64! */
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

           /* Do not do the transfer - only connect to host */
           curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L);
           res = curl_easy_perform(curl);

           /* Extract the socket from the curl handle */
           res = curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &sockfd);

           if(res != CURLE_OK) {
             printf("Error: %s\n", curl_easy_strerror(res));
             return 1;
           }
         }
       }

AVAILABILITY

       Added in 7.15.2

RETURN VALUE

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

SEE ALSO

       curl_easy_getinfo(3), curl_easy_setopt(3), CURLINFO_ACTIVESOCKET(3), CURLOPT_CONNECT_ONLY(3)

ibcurl 8.5.0                                    December 04, 2023                         CURLINFO_LASTSOCKET(3)