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64 lines
2.0 KiB
Groff
64 lines
2.0 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLINFO_ACTIVESOCKET.md
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.TH CURLINFO_ACTIVESOCKET 3 "2024-06-01" libcurl
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.SH NAME
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CURLINFO_ACTIVESOCKET \- get the active socket
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.SH SYNOPSIS
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.nf
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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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.fi
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.SH 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, \fICURL_SOCKET_BAD\fP is returned. When you are finished working
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with the socket, you must call \fIcurl_easy_cleanup(3)\fP 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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\fICURLOPT_CONNECT_ONLY(3)\fP, which skips the transfer phase.
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\fICURLINFO_ACTIVESOCKET(3)\fP was added as a replacement for
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\fICURLINFO_LASTSOCKET(3)\fP since that one is not working on all platforms.
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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.nf
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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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if(res != CURLE_OK) {
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printf("Error: %s\\n", curl_easy_strerror(res));
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curl_easy_cleanup(curl);
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return 1;
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}
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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 && sockfd != CURL_SOCKET_BAD) {
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/* operate on sockfd */
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}
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curl_easy_cleanup(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in 7.45.0
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH SEE ALSO
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.BR CURLINFO_LASTSOCKET (3),
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.BR CURLOPT_CONNECT_ONLY (3),
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.BR curl_easy_getinfo (3),
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.BR curl_easy_setopt (3)
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