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Fix: place connections on tickable queue when sending is reenabled

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Because connections' tickability depends on the ability of the engine
to send packets (ENPUB_CAN_SEND is checked), this property should be
recalculated when sending is reenabled in the engine via
lsquic_engine_send_unsent_packets()
This commit is contained in:
Dmitri Tikhonov 2020-04-17 12:06:48 -04:00
parent f4bfba069b
commit 898664ea29
1 changed files with 27 additions and 0 deletions
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27
src/liblsquic/lsquic_engine.c
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@ -2445,6 +2445,32 @@ reset_deadline (lsquic_engine_t *engine, lsquic_time_t now)
}
static void
check_tickable_conns_again (struct lsquic_engine *engine)
{
struct lsquic_hash_elem *el;
struct lsquic_conn *conn;
unsigned count;
count = 0;
for (el = lsquic_hash_first(engine->conns_hash); el;
el = lsquic_hash_next(engine->conns_hash))
{
conn = lsquic_hashelem_getdata(el);
if (!(conn->cn_flags & LSCONN_TICKABLE)
&& conn->cn_if->ci_is_tickable(conn))
{
lsquic_mh_insert(&engine->conns_tickable, conn,
conn->cn_last_ticked);
engine_incref_conn(conn, LSCONN_TICKABLE);
++count;
}
}
LSQ_DEBUG("%u connection%s tickable again after sending has been "
"re-enabled", count, count == 1 ? " is" : "s are");
}
void
lsquic_engine_send_unsent_packets (lsquic_engine_t *engine)
{
@ -2462,6 +2488,7 @@ lsquic_engine_send_unsent_packets (lsquic_engine_t *engine)
LSQ_DEBUG("can send again");
EV_LOG_GENERIC_EVENT("can send again");
engine->pub.enp_flags |= ENPUB_CAN_SEND;
check_tickable_conns_again(engine);
}
send_packets_out(engine, &ticked_conns, &closed_conns);