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23 .TH CURLINFO_LASTSOCKET 3 "May 06, 2017" "libcurl 7.59.0" "curl_easy_getinfo options"
26 CURLINFO_LASTSOCKET \- get the last socket used
28 #include <curl/curl.h>
30 CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LASTSOCKET, long *socket);
32 Deprecated since 7.45.0. Use \fICURLINFO_ACTIVESOCKET(3)\fP instead.
34 Pass a pointer to a long to receive the last socket used by this curl
35 session. If the socket is no longer valid, -1 is returned. When you finish
36 working with the socket, you must call curl_easy_cleanup() as usual and let
37 libcurl close the socket and cleanup other resources associated with the
38 handle. This is typically used in combination with
39 \fICURLOPT_CONNECT_ONLY(3)\fP.
41 NOTE: this API is deprecated since it is not working on win64 where the SOCKET
42 type is 64 bits large while its 'long' is 32 bits. Use the
43 \fICURLINFO_ACTIVESOCKET(3)\fP instead, if possible.
48 CURL *curl = curl_easy_init();
50 long sockfd; /* doesn't work on win64! */
51 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
53 /* Do not do the transfer - only connect to host */
54 curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L);
55 res = curl_easy_perform(curl);
57 /* Extract the socket from the curl handle */
58 res = curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &sockfd);
61 printf("Error: %s\\n", curl_easy_strerror(res));
69 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
71 .BR curl_easy_getinfo "(3), " curl_easy_setopt "(3), "
72 .BR CURLINFO_ACTIVESOCKET "(3), "