Man pages sections > man3 > CURLMOPT_PUSHDATA

CURLMOPT_PUSHDATA - pointer to pass to push callback

CURLMOPT_PUSHDATA(3) curl_multi_setopt options CURLMOPT_PUSHDATA(3)

NAME

CURLMOPT_PUSHDATA - pointer to pass to push callback

SYNOPSIS

#include <curl/curl.h>
CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_PUSHDATA, void *pointer);

DESCRIPTION

Set pointer to pass as the last argument to the CURLMOPT_PUSHFUNCTION(3) callback. The pointer will not be touched or used by libcurl itself, only passed on to the callback function.

DEFAULT

NULL

PROTOCOLS

HTTP(S)

EXAMPLE

/* only allow pushes for file names starting with "push-" */
int push_callback(CURL *parent,
                  CURL *easy,
                  size_t num_headers,
                  struct curl_pushheaders *headers,
                  void *userp)
{
  char *headp;
  int *transfers = (int *)userp;
  FILE *out;
  headp = curl_pushheader_byname(headers, ":path");
  if(headp && !strncmp(headp, "/push-", 6)) {
    fprintf(stderr, "The PATH is %s\n", headp);
/* save the push here */ out = fopen("pushed-stream", "wb");
/* write to this file */ curl_easy_setopt(easy, CURLOPT_WRITEDATA, out);
(*transfers)++; /* one more */
return CURL_PUSH_OK; } return CURL_PUSH_DENY; }
curl_multi_setopt(multi, CURLMOPT_PUSHFUNCTION, push_callback); curl_multi_setopt(multi, CURLMOPT_PUSHDATA, &counter);

AVAILABILITY

Added in 7.44.0

RETURN VALUE

Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.

SEE ALSO

CURLMOPT_PUSHFUNCTION(3), CURLMOPT_PIPELINING(3), CURLOPT_PIPEWAIT(3), RFC7540
May 27, 2017 libcurl 7.55.1