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http2: remove stream dependency tracking

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The HTTP/2 feature is deprecated, few servers implement it and our
implementation is complicated by its state management. Make the two
CURLOPT_* involved a nop and deprecate them.

Closes #21723
This commit is contained in:
Stefan Eissing 2026-05-22 09:11:41 +02:00 • committed by Daniel Stenberg
parent 2056498625
commit bfbff7852f
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GPG key ID: 5CC908FDB71E12C2
9 changed files with 34 additions and 130 deletions
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18
lib/http2.c
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@ -1778,16 +1778,12 @@ static int sweight_in_effect(const struct Curl_easy *data)
* struct.
*/
static void h2_pri_spec(struct cf_h2_ctx *ctx,
struct Curl_easy *data,
static void h2_pri_spec(struct Curl_easy *data,
nghttp2_priority_spec *pri_spec)
{
struct Curl_data_priority *prio = &data->set.priority;
struct h2_stream_ctx *depstream = H2_STREAM_CTX(ctx, prio->parent);
int32_t depstream_id = depstream ? depstream->id : 0;
nghttp2_priority_spec_init(pri_spec, depstream_id,
sweight_wanted(data),
data->set.priority.exclusive);
nghttp2_priority_spec_init(pri_spec, 0,
sweight_wanted(data), FALSE);
data->state.priority = *prio;
}
@ -1805,13 +1801,11 @@ static CURLcode h2_progress_egress(struct Curl_cfilter *cf,
int rv = 0;
if(stream && stream->id > 0 &&
((sweight_wanted(data) != sweight_in_effect(data)) ||
(data->set.priority.exclusive != data->state.priority.exclusive) ||
(data->set.priority.parent != data->state.priority.parent))) {
(sweight_wanted(data) != sweight_in_effect(data))) {
/* send new weight and/or dependency */
nghttp2_priority_spec pri_spec;
h2_pri_spec(ctx, data, &pri_spec);
h2_pri_spec(data, &pri_spec);
CURL_TRC_CF(data, cf, "[%d] Queuing PRIORITY", stream->id);
DEBUGASSERT(stream->id != -1);
rv = nghttp2_submit_priority(ctx->h2, NGHTTP2_FLAG_NONE,
@ -2123,7 +2117,7 @@ static CURLcode h2_submit(struct h2_stream_ctx **pstream,
goto out;
}
h2_pri_spec(ctx, data, &pri_spec);
h2_pri_spec(data, &pri_spec);
if(!nghttp2_session_check_request_allowed(ctx->h2))
CURL_TRC_CF(data, cf, "send request NOT allowed (via nghttp2)");