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CURLINFO_ACTIVESOCKET(3)

CURLINFO_ACTIVESOCKET(3)   curl_easy_getinfo options  CURLINFO_ACTIVESOCKET(3)



NAME
       CURLINFO_ACTIVESOCKET - get the active socket

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_ACTIVESOCKET,
                                  curl_socket_t *socket);

DESCRIPTION
       Pass  a  pointer to a curl_socket_t to receive the most recently active
       socket used for the transfer connection by this curl  session.  If  the
       socket  is  no  longer valid, CURL_SOCKET_BAD is returned. When you are
       finished working with the socket, you must call curl_easy_cleanup(3) as
       usual  on  the easy handle and let libcurl close the socket and cleanup
       other resources associated with the handle.  This  option  returns  the
       active  socket  only  after  the transfer is complete, and is typically
       used in  combination  with  CURLOPT_CONNECT_ONLY(3),  which  skips  the
       transfer phase.

       CURLINFO_ACTIVESOCKET(3)  was added as a replacement for CURLINFO_LAST‐
       SOCKET(3) since that one is not working on all platforms.

PROTOCOLS
       All

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         curl_socket_t sockfd;
         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_ACTIVESOCKET, &sockfd);

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

AVAILABILITY
       Added in 7.45.0

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_LASTSOCKET(3),



libcurl 7.86.0                   May 17, 2022         CURLINFO_ACTIVESOCKET(3)
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