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MEDIUM: h2: implement active connection reversal 

Implement active reverse on h2_conn_reverse().

Only minimal steps are done here : HTTP version session counters are
incremented on the listener instance. Also, the connection is inserted
in the mux_stopping_list to ensure it will be actively closed on process
shutdown/listener suspend.
This commit is contained in:
Amaury Denoyelle 2023-08-07 14:55:32 +02:00
parent b130f8dbc3
commit 6820b9b393
1 changed files with 20 additions and 1 deletions
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21
src/mux_h2.c
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@ -3220,6 +3220,9 @@ static int h2_frame_check_vs_state(struct h2c *h2c, struct h2s *h2s)
* passive reversal. Timeouts are inverted and H2_CF_IS_BACK is set or unset
* depending on the reversal direction.
*
* For active reversal, only minor steps are required. The connection should
* then be accepted by its listener before being able to use it for transfers.
*
* For passive reversal, connection is inserted in its targetted server idle
* pool. It can thus be reused immediately for future transfers on this server.
*
@ -3257,7 +3260,23 @@ static int h2_conn_reverse(struct h2c *h2c)
srv_add_to_idle_list(srv, conn, 1);
}
else {
/* TODO */
struct listener *l = __objt_listener(h2c->conn->target);
struct proxy *prx = l->bind_conf->frontend;
h2c->flags &= ~H2_CF_IS_BACK;
h2c->shut_timeout = h2c->timeout = prx->timeout.client;
if (tick_isset(prx->timeout.clientfin))
h2c->shut_timeout = prx->timeout.clientfin;
h2c->px_counters = EXTRA_COUNTERS_GET(prx->extra_counters_fe,
&h2_stats_module);
proxy_inc_fe_cum_sess_ver_ctr(l, prx, 2);
BUG_ON(LIST_INLIST(&h2c->conn->stopping_list));
LIST_APPEND(&mux_stopping_data[tid].list,
&h2c->conn->stopping_list);
}
h2c->task->expire = tick_add(now_ms, h2c->timeout);