curlopt_postfields(3) [mojave man page]

CURLOPT_POSTFIELDS(3)					     curl_easy_setopt options					     CURLOPT_POSTFIELDS(3)

NAME

       CURLOPT_POSTFIELDS - specify data to POST to server

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_POSTFIELDS, char *postdata);

DESCRIPTION

       Pass  a	char * as parameter, pointing to the full data to send in a HTTP POST operation. You must make sure that the data is formatted the
       way you want the server to receive it. libcurl will not convert or encode it for you in any way. For example, the  web  server  may  assume
       that this data is url-encoded.

       The  data  pointed  to is NOT copied by the library: as a consequence, it must be preserved by the calling application until the associated
       transfer finishes.  This behaviour can be changed (so libcurl does copy the data) by setting the CURLOPT_COPYPOSTFIELDS(3) option.

       This POST is a normal application/x-www-form-urlencoded kind (and libcurl will set that Content-Type by default when this option is  used),
       which is commonly used by HTML forms. Change Content-Type with CURLOPT_HTTPHEADER(3).

       You  can  use  curl_easy_escape(3)  to  url-encode your data, if necessary. It returns a pointer to an encoded string that can be passed as
       postdata.

       Using CURLOPT_POSTFIELDS(3) implies CURLOPT_POST(3).

       If CURLOPT_POSTFIELDS(3) is explicitly set to NULL then libcurl will get the POST data from the read callback. If you want to send a  zero-
       byte POST set CURLOPT_POSTFIELDS(3) to an empty string, or set CURLOPT_POST(3) to 1 and CURLOPT_POSTFIELDSIZE(3) to 0.

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

       To make multipart/formdata posts (aka RFC2388-posts), check out the CURLOPT_HTTPPOST(3) option combined with curl_formadd(3).

DEFAULT

       NULL

PROTOCOLS

       HTTP

EXAMPLE

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

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

	 /* size of the POST data */
	 curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, 12L);

	 /* pass in a pointer to the data - libcurl will not copy */
	 curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data);

	 curl_easy_perform(curl);
       }

AVAILABILITY

       Always

RETURN VALUE

       Returns CURLE_OK

SEE ALSO

       CURLOPT_POSTFIELDSIZE(3), CURLOPT_READFUNCTION(3),

libcurl 7.54.0							   June 11, 2016					     CURLOPT_POSTFIELDS(3)

Check Out this Related Man Page

CURLOPT_POST(3) 					     curl_easy_setopt options						   CURLOPT_POST(3)

NAME

       CURLOPT_POST - request a HTTP POST

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_POST, long post);

DESCRIPTION

       A  parameter set to 1 tells libcurl to do a regular HTTP post. This will also make the library use a "Content-Type: application/x-www-form-
       urlencoded" header. (This is by far the most commonly used POST method).

       Use one of CURLOPT_POSTFIELDS(3) or CURLOPT_COPYPOSTFIELDS(3) options to specify what data to post  and	CURLOPT_POSTFIELDSIZE(3)  or  CUR-
       LOPT_POSTFIELDSIZE_LARGE(3) to set the data size.

       Optionally,  you  can provide data to POST using the CURLOPT_READFUNCTION(3) and CURLOPT_READDATA(3) options but then you must make sure to
       not set CURLOPT_POSTFIELDS(3) to anything but NULL. When providing data with a callback, you must transmit it using chunked transfer-encod-
       ing  or	you  must  set the size of the data with the CURLOPT_POSTFIELDSIZE(3) or CURLOPT_POSTFIELDSIZE_LARGE(3) options. To enable chunked
       encoding, you simply pass in the appropriate Transfer-Encoding header, see the post-callback.c example.

       You can override the default POST Content-Type: header by setting your own with CURLOPT_HTTPHEADER(3).

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

       If  you use POST to a HTTP 1.1 server, you can send data without knowing the size before starting the POST if you use chunked encoding. You
       enable this by adding a header like "Transfer-Encoding: chunked" with CURLOPT_HTTPHEADER(3). With HTTP 1.0 or without chunked transfer, you
       must specify the size in the request.

       When setting CURLOPT_POST(3) to 1, it will automatically set CURLOPT_NOBODY(3) to 0.

       If you issue a POST request and then want to make a HEAD or GET using the same re-used handle, you must explicitly set the new request type
       using CURLOPT_NOBODY(3) or CURLOPT_HTTPGET(3) or similar.

DEFAULT

       0, disabled

PROTOCOLS

       HTTP

EXAMPLE

       TODO

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_HTTPPOST(3),

libcurl 7.54.0							 February 03, 2016						   CURLOPT_POST(3)

Linux and UNIX Man Pages

curlopt_postfields(3) [mojave man page]

Check Out this Related Man Page