curl_formget(3) [mojave man page]

curl_formget(3) 						  libcurl Manual						   curl_formget(3)

NAME

       curl_formget - serialize a previously built multipart/formdata HTTP POST chain

SYNOPSIS

       #include <curl/curl.h>

       int curl_formget(struct curl_httppost * form, void *userp,
			 curl_formget_callback append );

DESCRIPTION

       curl_formget()  is  used  to serialize data previously built/appended with curl_formadd(3). Accepts a void pointer as second argument named
       userp which will be passed as the first argument to the curl_formget_callback function.

       typedef size_t (*curl_formget_callback)(void *userp, const char *buf,  size_t len);

       The curl_formget_callback will be executed for each part of the HTTP POST chain. The character buffer passed to the callback  must  not	be
       freed. The callback should return the buffer length passed to it on success.

       If  the CURLFORM_STREAM option is used in the formpost, it will prevent curl_formget(3) from working until you've performed the actual HTTP
       request as only then will libcurl get the actual read callback to use!

RETURN VALUE

       0 means everything was ok, non-zero means an error occurred

EXAMPLE

	size_t print_httppost_callback(void *arg, const char *buf, size_t len)
	{
	  fwrite(buf, len, 1, stdout);
	  (*(size_t *) arg) += len;
	  return len;
	}

	size_t print_httppost(struct curl_httppost *post)
	{
	  size_t total_size = 0;
	  if(curl_formget(post, &total_size, print_httppost_callback)) {
	    return (size_t) -1;
	  }
	  return total_size;
	}

AVAILABILITY

       This function was added in libcurl 7.15.5

SEE ALSO

       curl_formadd(3)

libcurl 7.54.0							 February 03, 2016						   curl_formget(3)

CURLOPT_HTTPPOST(3)					     curl_easy_setopt options					       CURLOPT_HTTPPOST(3)

NAME

       CURLOPT_HTTPPOST - specify the multipart formpost content

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTPPOST,
				 struct curl_httppost *formpost);

DESCRIPTION

       Tells  libcurl you want a multipart/formdata HTTP POST to be made and you instruct what data to pass on to the server in the formpost argu-
       ment.  Pass a pointer to a linked list of curl_httppost structs as parameter.  The easiest way to create such a list, is to  use  curl_for-
       madd(3) as documented. The data in this list must remain intact as long as the curl transfer is alive and is using it.

       Using POST with HTTP 1.1 implies the use of a "Expect: 100-continue" header.  You can disable this header with CURLOPT_HTTPHEADER(3).

       When setting CURLOPT_HTTPPOST(3), it will automatically set CURLOPT_NOBODY(3) to 0.

DEFAULT

       NULL

PROTOCOLS

       HTTP

EXAMPLE

       /* Fill in the file upload field. This makes libcurl load data from
	  the given file name when curl_easy_perform() is called. */
       curl_formadd(&formpost,
		    &lastptr,
		    CURLFORM_COPYNAME, "sendfile",
		    CURLFORM_FILE, "postit2.c",
		    CURLFORM_END);

       /* Fill in the filename field */
       curl_formadd(&formpost,
		    &lastptr,
		    CURLFORM_COPYNAME, "filename",
		    CURLFORM_COPYCONTENTS, "postit2.c",
		    CURLFORM_END);

       /* Fill in the submit field too, even if this is rarely needed */
       curl_formadd(&formpost,
		    &lastptr,
		    CURLFORM_COPYNAME, "submit",
		    CURLFORM_COPYCONTENTS, "send",
		    CURLFORM_END);

AVAILABILITY

       As long as HTTP is enabled

RETURN VALUE

       Returns CURLE_OK if HTTP is enabled, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_POSTFIELDS(3), CURLOPT_POST(3), curl_formadd(3), curl_formfree(3),

libcurl 7.54.0							   May 17, 2016 					       CURLOPT_HTTPPOST(3)