NAME

       CURLOPT_COPYPOSTFIELDS - have libcurl copy data to POST

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_COPYPOSTFIELDS, char *data);

DESCRIPTION

       Pass a char * as parameter, which should be the full data to post in a HTTP POST operation. It behaves as
       the CURLOPT_POSTFIELDS(3) option, but the original data is instead copied by the  library,  allowing  the
       application to overwrite the original data after setting this option.

       Because   data   are   copied,   care   must  be  taken  when  using  this  option  in  conjunction  with
       CURLOPT_POSTFIELDSIZE(3) or CURLOPT_POSTFIELDSIZE_LARGE(3): If  the  size  has  not  been  set  prior  to
       CURLOPT_COPYPOSTFIELDS(3),  the  data  is  assumed  to  be a zero terminated string; else the stored size
       informs the library about the byte count to copy. In any  case,  the  size  must  not  be  changed  after
       CURLOPT_COPYPOSTFIELDS(3),  unless  another  CURLOPT_POSTFIELDS(3) or CURLOPT_COPYPOSTFIELDS(3) option is
       issued.

DEFAULT

       NULL

PROTOCOLS

       HTTP(S)

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
         char local_buffer[1024]="data to send";
         curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");

         /* size of the data to copy from the buffer and send in the request */
         curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, 12L);

         /* send data from the local stack */
         curl_easy_setopt(curl, CURLOPT_COPYPOSTFIELDS, local_buffer);

         curl_easy_perform(curl);
       }

AVAILABILITY

       Added in 7.17.1

RETURN VALUE

       Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there
       was insufficient heap space.

SEE ALSO

       CURLOPT_POSTFIELDS(3), CURLOPT_POSTFIELDSIZE(3),