mirror of
https://codeberg.org/kiss-community/repo
synced 2024-12-23 07:40:11 -07:00
82 lines
3.0 KiB
Groff
82 lines
3.0 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_POST.md
|
|
.TH CURLOPT_POST 3 "2024-08-02" libcurl
|
|
.SH NAME
|
|
CURLOPT_POST \- make an HTTP POST
|
|
.SH SYNOPSIS
|
|
.nf
|
|
#include <curl/curl.h>
|
|
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_POST, long post);
|
|
.fi
|
|
.SH DESCRIPTION
|
|
A parameter set to 1 tells libcurl to do a regular HTTP post. This also makes
|
|
libcurl use a "Content\-Type: application/x\-www\-form\-urlencoded" header. This
|
|
is the most commonly used POST method.
|
|
|
|
Use one of \fICURLOPT_POSTFIELDS(3)\fP or \fICURLOPT_COPYPOSTFIELDS(3)\fP
|
|
options to specify what data to post and \fICURLOPT_POSTFIELDSIZE(3)\fP or
|
|
\fICURLOPT_POSTFIELDSIZE_LARGE(3)\fP to set the data size.
|
|
|
|
Optionally, you can provide data to POST using the
|
|
\fICURLOPT_READFUNCTION(3)\fP and \fICURLOPT_READDATA(3)\fP options but then
|
|
you must make sure to not set \fICURLOPT_POSTFIELDS(3)\fP to anything but
|
|
NULL. When providing data with a callback, you must transmit it using chunked
|
|
transfer\-encoding or you must set the size of the data with the
|
|
\fICURLOPT_POSTFIELDSIZE(3)\fP or \fICURLOPT_POSTFIELDSIZE_LARGE(3)\fP
|
|
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 \fICURLOPT_HTTPHEADER(3)\fP.
|
|
|
|
Using POST with HTTP 1.1 implies the use of a "Expect: 100\-continue" header.
|
|
You can disable this header with \fICURLOPT_HTTPHEADER(3)\fP as usual.
|
|
|
|
If you use POST to an 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
|
|
\fICURLOPT_HTTPHEADER(3)\fP. With HTTP 1.0 or without chunked transfer, you
|
|
must specify the size in the request. (Since 7.66.0, libcurl automatically
|
|
uses chunked encoding for POSTs if the size is unknown.)
|
|
|
|
When setting \fICURLOPT_POST(3)\fP to 1, libcurl automatically sets
|
|
\fICURLOPT_NOBODY(3)\fP and \fICURLOPT_HTTPGET(3)\fP to 0.
|
|
|
|
If you issue a POST request and then want to make a HEAD or GET using the same
|
|
reused handle, you must explicitly set the new request type using
|
|
\fICURLOPT_NOBODY(3)\fP or \fICURLOPT_HTTPGET(3)\fP or similar.
|
|
|
|
When setting \fICURLOPT_POST(3)\fP to 0, libcurl resets the request type to the
|
|
default to disable the POST. Typically that means gets reset to GET. Instead
|
|
you should set a new request type explicitly as described above.
|
|
.SH DEFAULT
|
|
0, disabled
|
|
.SH PROTOCOLS
|
|
This functionality affects http only
|
|
.SH EXAMPLE
|
|
.nf
|
|
int main(void)
|
|
{
|
|
CURL *curl = curl_easy_init();
|
|
if(curl) {
|
|
CURLcode res;
|
|
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
|
|
curl_easy_setopt(curl, CURLOPT_POST, 1L);
|
|
|
|
/* set up the read callback with CURLOPT_READFUNCTION */
|
|
|
|
res = curl_easy_perform(curl);
|
|
|
|
curl_easy_cleanup(curl);
|
|
}
|
|
}
|
|
.fi
|
|
.SH AVAILABILITY
|
|
Added in curl 7.1
|
|
.SH RETURN VALUE
|
|
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
|
|
.SH SEE ALSO
|
|
.BR CURLOPT_HTTPPOST (3),
|
|
.BR CURLOPT_POSTFIELDS (3),
|
|
.BR CURLOPT_UPLOAD (3)
|