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e3fe020089
Remove the PROTOCOLS section from the source files completely and instead generate them based on the header data in the curldown files. It also generates TLS backend information for options marked for TLS as protocol. Closes #13175
75 lines
1.9 KiB
Markdown
75 lines
1.9 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLINFO_ACTIVESOCKET
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_LASTSOCKET (3)
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- CURLOPT_CONNECT_ONLY (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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Protocol:
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- All
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---
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# NAME
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CURLINFO_ACTIVESOCKET - get the active socket
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_ACTIVESOCKET,
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curl_socket_t *socket);
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~~~
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# DESCRIPTION
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Pass a pointer to a curl_socket_t to receive the most recently active socket
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used for the transfer connection by this curl session. If the socket is no
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longer valid, *CURL_SOCKET_BAD* is returned. When you are finished working
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with the socket, you must call curl_easy_cleanup(3) as usual on the easy
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handle and let libcurl close the socket and cleanup other resources associated
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with the handle. This option returns the active socket only after the transfer
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is complete, and is typically used in combination with
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CURLOPT_CONNECT_ONLY(3), which skips the transfer phase.
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CURLINFO_ACTIVESOCKET(3) was added as a replacement for
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CURLINFO_LASTSOCKET(3) since that one is not working on all platforms.
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_socket_t sockfd;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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/* Do not do the transfer - only connect to host */
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curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L);
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res = curl_easy_perform(curl);
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/* Extract the socket from the curl handle */
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res = curl_easy_getinfo(curl, CURLINFO_ACTIVESOCKET, &sockfd);
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if(res != CURLE_OK) {
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printf("Error: %s\n", curl_easy_strerror(res));
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return 1;
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}
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.45.0
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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