CURLOPT_STREAM_DEPENDS - stream this transfer depends on
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_STREAM_DEPENDS, CURL *dephandle);
CURLOPT_STREAM_DEPENDS(3) curl_easy_setopt options CURLOPT_STREAM_DEPENDS(3)
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 CUR-
LOPT_STREAM_DEPENDS_E(3) option.
The spec says "Including a dependency expresses a preference to allo-
cate 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 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, 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.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | web/curl |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
SEE ALSO
CURLOPT_STREAM_WEIGHT(3), CURLOPT_STREAM_DEPENDS_E(3),
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from https://curl.se/down-
load/curl-7.83.1.tar.bz2.
Further information about this software can be found on the open source
community website at http://curl.haxx.se/.
libcurl 7.83.1 November 26, 2021 CURLOPT_STREAM_DEPENDS(3)