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CURLOPT_ERRORBUFFER

Section: curl_easy_setopt options (3)
Updated: 17 Jun 2014
Index Return to Main Contents
 

NAME

CURLOPT_ERRORBUFFER - set error buffer for error messages  

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ERRORBUFFER, char *buf);  

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 curl_easy_perform(3) and related functions. The buffer must be at least CURL_ERROR_SIZE bytes big.

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 curl_easy_cleanup(3) or you set the same option again to use a different pointer.

Consider CURLOPT_VERBOSE(3) and CURLOPT_DEBUGFUNCTION(3) 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.  

DEFAULT

NULL  

PROTOCOLS

All  

EXAMPLE

curl = curl_easy_init();
if(curl) {
  char error[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, error);

  /* Perform the request */
  curl_easy_perform(curl);
}
 

AVAILABILITY

Always  

RETURN VALUE

Returns CURLE_OK  

SEE ALSO

CURLOPT_DEBUGFUNCTION(3), CURLOPT_VERBOSE(3), curl_easy_strerror(3), curl_multi_strerror(3), curl_share_strerror(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
DEFAULT
PROTOCOLS
EXAMPLE
AVAILABILITY
RETURN VALUE
SEE ALSO


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