mirror of
https://codeberg.org/kiss-community/repo
synced 2024-12-24 16:30:04 -07:00
69 lines
1.7 KiB
Groff
69 lines
1.7 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_HEADERDATA.md
|
|
.TH CURLOPT_HEADERDATA 3 "2024-06-01" libcurl
|
|
.SH NAME
|
|
CURLOPT_HEADERDATA \- pointer to pass to header callback
|
|
.SH SYNOPSIS
|
|
.nf
|
|
#include <curl/curl.h>
|
|
|
|
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HEADERDATA, void *pointer);
|
|
.fi
|
|
.SH DESCRIPTION
|
|
Pass a \fIpointer\fP to be used to write the header part of the received data
|
|
to.
|
|
|
|
If \fICURLOPT_WRITEFUNCTION(3)\fP or \fICURLOPT_HEADERFUNCTION(3)\fP is used,
|
|
\fIpointer\fP is passed in to the respective callback.
|
|
|
|
If neither of those options are set, \fIpointer\fP must be a valid FILE * and
|
|
it is used by a plain fwrite() to write headers to.
|
|
|
|
If you are using libcurl as a win32 DLL, you \fBMUST\fP use a
|
|
\fICURLOPT_WRITEFUNCTION(3)\fP or \fICURLOPT_HEADERFUNCTION(3)\fP if you set
|
|
this option or you might experience crashes.
|
|
.SH DEFAULT
|
|
NULL
|
|
.SH PROTOCOLS
|
|
All
|
|
.SH EXAMPLE
|
|
.nf
|
|
struct my_info {
|
|
int shoesize;
|
|
char *secret;
|
|
};
|
|
|
|
static size_t header_callback(char *buffer, size_t size,
|
|
size_t nitems, void *userdata)
|
|
{
|
|
struct my_info *i = userdata;
|
|
printf("shoe size: %d\\n", i->shoesize);
|
|
/* now this callback can access the my_info struct */
|
|
|
|
return nitems * size;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
CURL *curl = curl_easy_init();
|
|
if(curl) {
|
|
struct my_info my = { 10, "the cookies are in the cupboard" };
|
|
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
|
|
|
|
curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, header_callback);
|
|
|
|
/* pass in custom data to the callback */
|
|
curl_easy_setopt(curl, CURLOPT_HEADERDATA, &my);
|
|
|
|
curl_easy_perform(curl);
|
|
}
|
|
}
|
|
.fi
|
|
.SH AVAILABILITY
|
|
Always
|
|
.SH RETURN VALUE
|
|
Returns CURLE_OK
|
|
.SH SEE ALSO
|
|
.BR CURLOPT_HEADERFUNCTION (3),
|
|
.BR CURLOPT_WRITEFUNCTION (3),
|
|
.BR curl_easy_header (3)
|