CURLINFO_LASTSOCKET(3)

1CURLINFO_LASTSOCKET(3)     curl_easy_getinfo options    CURLINFO_LASTSOCKET(3)
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NAME

6       CURLINFO_LASTSOCKET - get the last socket used
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SYNOPSIS

9       #include <curl/curl.h>
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11       CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LASTSOCKET, long *socket);
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DESCRIPTION

14       Deprecated since 7.45.0. Use CURLINFO_ACTIVESOCKET(3) instead.
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16       Pass  a  pointer to a long to receive the last socket used by this curl
17       session. If the socket is no longer valid, -1  is  returned.  When  you
18       finish  working  with  the socket, you must call curl_easy_cleanup() as
19       usual and let libcurl close the socket and cleanup other resources  as‐
20       sociated  with  the  handle. This is typically used in combination with
21       CURLOPT_CONNECT_ONLY(3).
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23       NOTE: this API is deprecated since it is not working on win64 where the
24       SOCKET  type  is  64  bits  large  while its 'long' is 32 bits. Use the
25       CURLINFO_ACTIVESOCKET(3) instead, if possible.
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PROTOCOLS

28       All
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EXAMPLE

31       CURL *curl = curl_easy_init();
32       if(curl) {
33         long sockfd; /* does not work on win64! */
34         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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36         /* Do not do the transfer - only connect to host */
37         curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L);
38         res = curl_easy_perform(curl);
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40         /* Extract the socket from the curl handle */
41         res = curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &sockfd);
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43         if(res != CURLE_OK) {
44           printf("Error: %s\n", curl_easy_strerror(res));
45           return 1;
46         }
47       }
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AVAILABILITY

50       Added in 7.15.2
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RETURN VALUE

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