CURLOPT_POSTFIELDSIZE(3)   curl_easy_setopt options   CURLOPT_POSTFIELDSIZE(3)

NAME
       CURLOPT_POSTFIELDSIZE - size of POST data pointed to

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_POSTFIELDSIZE, long
       size);

DESCRIPTION
       If you want to post data to the server without having libcurl do a
       strlen() to measure the data size, this option must be used. When this
       option is used you can post fully binary data, which otherwise is
       likely to fail. If this size is set to -1, the library will use
       strlen() to get the size.

       If you post more than 2GB, use _POSTFIELDSIZE_LARGE&section=3">CURLOPT_POSTFIELDSIZE_LARGE(3).

DEFAULT
       -1

PROTOCOLS
       HTTP

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         const char *data = "data to send";

         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

         /* size of the POST data */
         curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, (long) strlen(data));

         curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data);

         curl_easy_perform(curl);
       }

AVAILABILITY
       Along with HTTP

RETURN VALUE
       Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO
       CURLOPT_POSTFIELDS(3), CURLOPT_POSTFIELDSIZE_LARGE(3),

libcurl 7.77.0                 November 4, 2020       CURLOPT_POSTFIELDSIZE(3)