CURLOPT_COPYPOSTFIELDS(3)

CURLOPT_COPYPOSTFIELDS(3curl_easy_setopt optionCURLOPT_COPYPOSTFIELDS(3)

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,

libcurl 7.58.0   Last change: February 03, 2016                 1

CURLOPT_COPYPOSTFIELDS(3curl_easy_setopt optionCURLOPT_COPYPOSTFIELDS(3)

     CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there
     was insufficient heap space.

SEE ALSO

     CURLOPT_POSTFIELDS(3), CURLOPT_POSTFIELDSIZE(3),

libcurl 7.58.0   Last change: February 03, 2016                 2