.\" ************************************************************************** .\" * _ _ ____ _ .\" * Project ___| | | | _ \| | .\" * / __| | | | |_) | | .\" * | (__| |_| | _ <| |___ .\" * \___|\___/|_| \_\_____| .\" * .\" * Copyright (C) Daniel Stenberg, , 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 CURLOPT_PRIVATE 3 "17 Jun 2014" libcurl libcurl .SH NAME CURLOPT_PRIVATE \- store a private pointer .SH SYNOPSIS .nf #include CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PRIVATE, void *pointer); .fi .SH DESCRIPTION Pass a void * as parameter, pointing to data that should be associated with this curl handle. The pointer can subsequently be retrieved using \fIcurl_easy_getinfo(3)\fP with the \fICURLINFO_PRIVATE(3)\fP option. libcurl itself never does anything with this data. .SH DEFAULT NULL .SH PROTOCOLS All .SH EXAMPLE .nf CURL *curl = curl_easy_init(); struct private secrets; if(curl) { struct private *extracted; curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); /* store a pointer to our private struct */ curl_easy_setopt(curl, CURLOPT_PRIVATE, &secrets); curl_easy_perform(curl); /* we can extract the private pointer again too */ curl_easy_getinfo(curl, CURLINFO_PRIVATE, &extracted); } .fi .SH AVAILABILITY Added in 7.10.3 .SH RETURN VALUE Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. .SH "SEE ALSO" .BR CURLOPT_VERBOSE "(3), " CURLOPT_STDERR "(3), "