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MINOR: mux-h2: consider the elastic streams limit on frontend

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Now the streams-elasticity limit applies to h2 frontend connections.
It allows to reduce the number of advertised streams based on the
number of concurrent connections.
This commit is contained in:
Willy Tarreau 2026-05-09 17:58:31 +02:00
parent dd36c84a7b
commit 731fc033dd
1 changed files with 12 additions and 2 deletions
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14
src/mux_h2.c
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@ -1447,8 +1447,18 @@ static int h2_init(struct connection *conn, struct proxy *prx, struct session *s
h2c->conn = conn;
h2c->streams_limit = h2c->streams_hard_limit = h2c_max_concurrent_streams(h2c);
if (!(h2c->flags & H2_CF_IS_BACK) && h2c->streams_hard_limit > 1)
_HA_ATOMIC_ADD(&tg_ctx->committed_extra_streams, h2c->streams_hard_limit - 1);
if (!(h2c->flags & H2_CF_IS_BACK)) {
uint max_strm = h2_fe_settings_max_concurrent_streams;
if (!max_strm)
max_strm = h2_settings_max_concurrent_streams;
max_strm = conn_calc_max_streams(max_strm);
if (max_strm && h2c->streams_hard_limit > max_strm)
h2c->streams_limit = h2c->streams_hard_limit = max_strm;
if (h2c->streams_hard_limit > 1)
_HA_ATOMIC_ADD(&tg_ctx->committed_extra_streams, h2c->streams_hard_limit - 1);
}
nb_rxbufs = (h2c->flags & H2_CF_IS_BACK) ? h2_be_rxbuf : h2_fe_rxbuf;
nb_rxbufs = (nb_rxbufs + global.tune.bufsize - 9 - 1) / (global.tune.bufsize - 9);