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CURLMOPT_PUSHDATA(3)                libcurl               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 *clientp)
       {
         char *headp;
         int *transfers = (int *)clientp;
         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

ibcurl 8.1.2                    April 26, 2023            CURLMOPT_PUSHDATA(3)

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