CURLOPT_PREREQDATA(3) curl_easy_setopt options CURLOPT_PREREQDATA(3)
NAME
CURLOPT_PREREQDATA - pointer passed to the pre-request callback
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PREREQDATA, void *pointer);
DESCRIPTION
Pass a pointer that will be untouched by libcurl and passed as the
first argument in the pre-request callback set with CURLOPT_PREREQFUNC-
TION(3).
DEFAULT
NULL
PROTOCOLS
All
EXAMPLE
static int prereq_callback(void *clientp,
char *conn_primary_ip,
char *conn_local_ip,
int conn_primary_port,
int conn_local_port)
{
printf("Connection made to %s:%s\n", conn_primary_ip, conn_primary_port);
return CURL_PREREQFUNC_OK;
}
{
struct data prereq_data;
curl_easy_setopt(CURL *handle, CURLOPT_PREREQFUNCTION, prereq_callback);
curl_easy_setopt(CURL *handle, CURLOPT_PREREQDATA, &prereq_data);
}
AVAILABILITY
Added in 7.80.0
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
if not.
SEE ALSO
CURLOPT_PREREQFUNCTION(3)
libcurl 7.81.0 November 26, 2021 CURLOPT_PREREQDATA(3)
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