.\" ************************************************************************** .\" * _ _ ____ _ .\" * Project ___| | | | _ \| | .\" * / __| | | | |_) | | .\" * | (__| |_| | _ <| |___ .\" * \___|\___/|_| \_\_____| .\" * .\" * Copyright (C) 1998 - 2019, 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.haxx.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. .\" * .\" ************************************************************************** .\" .TH CURLOPT_VERBOSE 3 "September 16, 2020" "libcurl 7.73.0" "curl_easy_setopt options" .SH NAME CURLOPT_VERBOSE \- set verbose mode on/off .SH SYNOPSIS #include CURLcode curl_easy_setopt(CURL *handle, CURLOPT_VERBOSE, long onoff); .SH DESCRIPTION Set the \fIonoff\fP parameter to 1 to make the library display a lot of verbose information about its operations on this \fIhandle\fP. Very useful for libcurl and/or protocol debugging and understanding. The verbose information will be sent to stderr, or the stream set with \fICURLOPT_STDERR(3)\fP. You hardly ever want this set in production use, you will almost always want this when you debug/report problems. To also get all the protocol data sent and received, consider using the \fICURLOPT_DEBUGFUNCTION(3)\fP. .SH DEFAULT 0, meaning disabled. .SH PROTOCOLS All .SH EXAMPLE .nf CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); /* ask libcurl to show us the verbose output */ curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); /* Perform the request */ curl_easy_perform(curl); } .fi .SH AVAILABILITY Always .SH RETURN VALUE Returns CURLE_OK .SH "SEE ALSO" .BR CURLOPT_STDERR "(3), " CURLOPT_DEBUGFUNCTION "(3), " .BR CURLOPT_ERRORBUFFER "(3), "