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  null-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

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           char local_buffer[1024]="data to send";
           curl_easy_setopt(curl, CURLOPT_URL, "https://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_MIMEPOST(3), CURLOPT_POSTFIELDS(3), CURLOPT_POSTFIELDSIZE(3), CURLOPT_UPLOAD(3)

ibcurl 8.5.0                                    December 04, 2023                      CURLOPT_COPYPOSTFIELDS(3)