Provided by: libcurl4-doc_7.68.0-1ubuntu2.25_all bug

NAME

       CURLOPT_STREAM_DEPENDS_E - set stream this transfer depends on exclusively

SYNOPSIS

       #include <curl/curl.h>

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

DESCRIPTION

       Pass  a CURL * pointer in dephandle to identify the stream within the same connection that this stream is
       depending upon exclusively. That means it depends on it and sets the Exclusive bit.

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

       Setting  a  dependency  with the exclusive flag for a reprioritized stream causes all the dependencies of
       the new parent stream to become dependent on the reprioritized stream.

       This option can be set during transfer.

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

DEFAULT

       NULL

PROTOCOLS

       HTTP/2

EXAMPLE

       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_E, curl);

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

AVAILABILITY

       Added in 7.46.0

RETURN VALUE

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

SEE ALSO

       CURLOPT_STREAM_WEIGHT(3), CURLOPT_STREAM_DEPENDS(3),