Provided by: libcurl4-doc_8.9.1-2ubuntu2.1_all bug

NAME

       CURLOPT_STREAM_DEPENDS - stream this transfer depends on

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_STREAM_DEPENDS,
                                 CURL *dephandle);

DESCRIPTION

       Pass  a  CURL  pointer in dephandle to identify the stream within the same connection that
       this stream is depending upon. This option  clears  the  exclusive  bit  and  is  mutually
       exclusive to the CURLOPT_STREAM_DEPENDS_E(3) option.

       The  spec says "Including a dependency expresses a preference to allocate resources to the
       identified stream rather than to the dependent stream."

       This option can be set during transfer.

       dephandle must not be the same as handle, that makes this function  return  an  error.  It
       must  be another easy handle, and it also needs to be a handle of a transfer that is about
       to be sent over the same HTTP/2 connection for this option to have an actual effect.

DEFAULT

       NULL

PROTOCOLS

       This functionality affects http only

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         CURL *curl2 = curl_easy_init(); /* a second handle */
         if(curl) {
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/one");

           /* the second depends on the first */
           curl_easy_setopt(curl2, CURLOPT_URL, "https://example.com/two");
           curl_easy_setopt(curl2, CURLOPT_STREAM_DEPENDS, curl);

           /* then add both to a multi handle and transfer them! */
         }
       }

AVAILABILITY

       Added in curl 7.46.0

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLMOPT_PIPELINING(3),       CURLOPT_HTTP_VERSION(3),        CURLOPT_STREAM_DEPENDS_E(3),
       CURLOPT_STREAM_WEIGHT(3)