mirror of
https://github.com/moparisthebest/curl
synced 2024-11-17 23:15:08 -05:00
91 lines
3.2 KiB
Groff
91 lines
3.2 KiB
Groff
.\" **************************************************************************
|
|
.\" * _ _ ____ _
|
|
.\" * Project ___| | | | _ \| |
|
|
.\" * / __| | | | |_) | |
|
|
.\" * | (__| |_| | _ <| |___
|
|
.\" * \___|\___/|_| \_\_____|
|
|
.\" *
|
|
.\" * Copyright (C) 1998 - 2014, 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 http://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_ERRORBUFFER 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
|
|
.SH NAME
|
|
CURLOPT_ERRORBUFFER \- set error buffer for error messages
|
|
.SH SYNOPSIS
|
|
#include <curl/curl.h>
|
|
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ERRORBUFFER, char *buf);
|
|
.SH DESCRIPTION
|
|
Pass a char * to a buffer that the libcurl may store human readable error
|
|
messages in on failures or problems. This may be more helpful than just the
|
|
return code from \fIcurl_easy_perform(3)\fP and related functions. The buffer
|
|
\fBmust be at least CURL_ERROR_SIZE bytes big\fP.
|
|
|
|
You must keep the associated buffer available until libcurl no longer needs
|
|
it. Failing to do so will cause very odd behavior or even crashes. libcurl
|
|
will need it until you call \fIcurl_easy_cleanup(3)\fP or you set the same
|
|
option again to use a different pointer.
|
|
|
|
Consider \fICURLOPT_VERBOSE(3)\fP and \fICURLOPT_DEBUGFUNCTION(3)\fP to better
|
|
debug and trace why errors happen.
|
|
|
|
If the library does not return an error, the buffer may not have been
|
|
touched. Do not rely on the contents in those cases.
|
|
.SH DEFAULT
|
|
NULL
|
|
.SH PROTOCOLS
|
|
All
|
|
.SH EXAMPLE
|
|
.nf
|
|
curl = curl_easy_init();
|
|
if(curl) {
|
|
CURLcode res;
|
|
char errbuf[CURL_ERROR_SIZE];
|
|
|
|
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
|
|
|
|
/* provide a buffer to store errors in */
|
|
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errbuf);
|
|
|
|
/* set the error buffer as empty before performing a request */
|
|
errbuf[0] = 0;
|
|
|
|
/* perform the request */
|
|
res = curl_easy_perform(curl);
|
|
|
|
/* if the request did not complete correctly, show the error
|
|
information. if no detailed error information was written to errbuf
|
|
show the more generic information from curl_easy_strerror instead.
|
|
*/
|
|
if(res != CURLE_OK) {
|
|
size_t len = strlen(errbuf);
|
|
fprintf(stderr, "\\nlibcurl: (%d) ", res);
|
|
if(len)
|
|
fprintf(stderr, "%s%s", errbuf,
|
|
((errbuf[len - 1] != '\\n') ? "\\n" : ""));
|
|
else
|
|
fprintf(stderr, "%s\\n", curl_easy_strerror(res));
|
|
}
|
|
}
|
|
.fi
|
|
.SH AVAILABILITY
|
|
Always
|
|
.SH RETURN VALUE
|
|
Returns CURLE_OK
|
|
.SH "SEE ALSO"
|
|
.BR CURLOPT_DEBUGFUNCTION "(3), " CURLOPT_VERBOSE "(3), "
|
|
.BR curl_easy_strerror "(3), " curl_multi_strerror "(3), "
|
|
.BR curl_share_strerror "(3) "
|