1CURLINFO_ACTIVESOCKET(3) curl_easy_getinfo options CURLINFO_ACTIVESOCKET(3)
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6 CURLINFO_ACTIVESOCKET - get the active socket
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9 #include <curl/curl.h>
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11 CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_ACTIVESOCKET,
12 curl_socket_t *socket);
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15 Pass a pointer to a curl_socket_t to receive the most recently active
16 socket used for the transfer connection by this curl session. If the
17 socket is no longer valid, CURL_SOCKET_BAD is returned. When you are
18 finished working with the socket, you must call curl_easy_cleanup(3) as
19 usual on the easy handle and let libcurl close the socket and cleanup
20 other resources associated with the handle. This option returns the ac‐
21 tive socket only after the transfer is complete, and is typically used
22 in combination with CURLOPT_CONNECT_ONLY(3), which skips the transfer
23 phase.
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25 CURLINFO_ACTIVESOCKET(3) was added as a replacement for CURLINFO_LAST‐
26 SOCKET(3) since that one is not working on all platforms.
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29 All
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32 CURL *curl = curl_easy_init();
33 if(curl) {
34 curl_socket_t sockfd;
35 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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37 /* Do not do the transfer - only connect to host */
38 curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L);
39 res = curl_easy_perform(curl);
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41 /* Extract the socket from the curl handle */
42 res = curl_easy_getinfo(curl, CURLINFO_ACTIVESOCKET, &sockfd);
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44 if(res != CURLE_OK) {
45 printf("Error: %s\n", curl_easy_strerror(res));
46 return 1;
47 }
48 }
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51 Added in 7.45.0
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54 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
55 if not.
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58 curl_easy_getinfo(3), curl_easy_setopt(3), CURLINFO_LASTSOCKET(3),
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62libcurl 7.85.0 May 17, 2022 CURLINFO_ACTIVESOCKET(3)