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.\" ************************************************************************** .\" * _ _ ____ _ .\" * Project ___| | | | _ \| | .\" * / __| | | | |_) | | .\" * | (__| |_| | _ <| |___ .\" * \___|\___/|_| \_\_____| .\" * .\" * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. .\" * .\" * This software is licensed as described in the file COPYING, which .\" * you should have received as part of this distribution. The terms .\" * are also available at https://curl.se/docs/copyright.html. .\" * .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell .\" * copies of the Software, and permit persons to whom the Software is .\" * furnished to do so, under the terms of the COPYING file. .\" * .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY .\" * KIND, either express or implied. .\" * .\" * SPDX-License-Identifier: curl .\" * .\" ************************************************************************** .\" .TH CURLINFO_LASTSOCKET 3 "January 02, 2023" "libcurl 7.88.1" "curl_easy_getinfo options" .SH NAME CURLINFO_LASTSOCKET \- get the last socket used .SH SYNOPSIS .nf #include <curl/curl.h> CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LASTSOCKET, long *socket); .fi .SH DESCRIPTION Deprecated since 7.45.0. Use \fICURLINFO_ACTIVESOCKET(3)\fP instead. Pass a pointer to a long to receive the last socket used by this curl session. If the socket is no longer valid, -1 is returned. When you finish working with the socket, you must call curl_easy_cleanup() as usual and let libcurl close the socket and cleanup other resources associated with the handle. This is typically used in combination with \fICURLOPT_CONNECT_ONLY(3)\fP. NOTE: this API is deprecated since it is not working on win64 where the SOCKET type is 64 bits large while its 'long' is 32 bits. Use the \fICURLINFO_ACTIVESOCKET(3)\fP instead, if possible. .SH PROTOCOLS All .SH EXAMPLE .nf CURL *curl = curl_easy_init(); if(curl) { long sockfd; /* does not work on win64! */ curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); /* Do not do the transfer - only connect to host */ curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L); res = curl_easy_perform(curl); /* Extract the socket from the curl handle */ res = curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &sockfd); if(res != CURLE_OK) { printf("Error: %s\\n", curl_easy_strerror(res)); return 1; } } .fi .SH AVAILABILITY Added in 7.15.2 .SH RETURN VALUE Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. .SH "SEE ALSO" .BR curl_easy_getinfo "(3), " curl_easy_setopt "(3), " .BR CURLINFO_ACTIVESOCKET "(3), "