CURLOPT_STREAM_DEPENDS_E - stream this transfer depends on exclusively
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_STREAM_DEPENDS_E, CURL *dephandle);
curl_easy_setopt options CURLOPT_STREAM_DEPENDS_E(3) NAME CURLOPT_STREAM_DEPENDS_E - 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 allo- cate 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 depen- dent 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. 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(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_E(3)