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BUG/MINOR: quic: Speed up the handshake completion only one time

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It is possible to speed up the handshake completion but only one time
by connection as mentionned in RFC 9002 "6.2.3. Speeding up Handshake Completion".
Add a flag to prevent this process to be run several times
(see https://www.rfc-editor.org/rfc/rfc9002#name-speeding-up-handshake-compl).

Must be backported to 2.6.
This commit is contained in:
Frédéric Lécaille 2022-09-07 17:34:18 +02:00
parent 43c891dda0
commit bb995eafc7
2 changed files with 5 additions and 1 deletions
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1
include/haproxy/xprt_quic-t.h
View File

@ -598,6 +598,7 @@ enum qc_mux_state {
#define QUIC_FL_CONN_TLS_ALERT (1U << 9)
/* gap here */
#define QUIC_FL_CONN_HALF_OPEN_CNT_DECREMENTED (1U << 11) /* The half-open connection counter was decremented */
#define QUIC_FL_CONN_HANDSHAKE_SPEED_UP (1U << 12) /* Handshake speeding up was done */
#define QUIC_FL_CONN_NOTIFY_CLOSE (1U << 27) /* MUX notified about quic-conn imminent closure (idle-timeout or CONNECTION_CLOSE emission/reception) */
#define QUIC_FL_CONN_EXP_TIMER (1U << 28) /* timer has expired, quic-conn can be freed */
#define QUIC_FL_CONN_CLOSING (1U << 29)

5
src/xprt_quic.c
View File

@ -2651,7 +2651,8 @@ static int qc_parse_pkt_frms(struct quic_rx_packet *pkt, struct ssl_sock_ctx *ct
TRACE_PROTO("Already received CRYPTO data",
QUIC_EV_CONN_RXPKT, qc, pkt, &cfdebug);
if (qc_is_listener(ctx->qc) &&
qel == &qc->els[QUIC_TLS_ENC_LEVEL_INITIAL])
qel == &qc->els[QUIC_TLS_ENC_LEVEL_INITIAL] &&
!(qc->flags & QUIC_FL_CONN_HANDSHAKE_SPEED_UP))
fast_retrans = 1;
break;
}
@ -2810,7 +2811,9 @@ static int qc_parse_pkt_frms(struct quic_rx_packet *pkt, struct ssl_sock_ctx *ct
struct quic_enc_level *iqel = &qc->els[QUIC_TLS_ENC_LEVEL_INITIAL];
struct quic_enc_level *hqel = &qc->els[QUIC_TLS_ENC_LEVEL_HANDSHAKE];
TRACE_PROTO("speeding up handshake completion", QUIC_EV_CONN_PRSHPKT, qc);
qc_prep_hdshk_fast_retrans(qc, &iqel->pktns->tx.frms, &hqel->pktns->tx.frms);
qc->flags |= QUIC_FL_CONN_HANDSHAKE_SPEED_UP;
}
/* The server must switch from INITIAL to HANDSHAKE handshake state when it