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QUIC: multiple versions support.

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Draft-29 and beyond are now treated as compatible versions.
This commit is contained in:
Sergey Kandaurov 2020-11-10 00:23:04 +03:00
parent 66cb03f003
commit 7f43460387
3 changed files with 14 additions and 6 deletions
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4
src/event/ngx_event_quic.c
View File

@ -1163,9 +1163,7 @@ ngx_quic_negotiate_version(ngx_connection_t *c, ngx_quic_header_t *inpkt)
{
size_t len;
ngx_quic_header_t pkt;
/* buffer size is calculated assuming a single supported version */
static u_char buf[NGX_QUIC_MAX_LONG_HEADER + sizeof(uint32_t)];
static u_char buf[NGX_QUIC_MAX_UDP_PAYLOAD_SIZE];
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
"sending version negotiation packet");

1
src/event/ngx_event_quic.h
View File

@ -16,7 +16,6 @@
#ifndef NGX_QUIC_DRAFT_VERSION
#define NGX_QUIC_DRAFT_VERSION 29
#endif
#define NGX_QUIC_VERSION (0xff000000 + NGX_QUIC_DRAFT_VERSION)
#define NGX_QUIC_MAX_SHORT_HEADER 25 /* 1 flags + 20 dcid + 4 pn */
#define NGX_QUIC_MAX_LONG_HEADER 56

15
src/event/ngx_event_quic_transport.c
View File

@ -56,6 +56,8 @@
: ((uint64_t) value) <= 1073741823 ? 4 \
: 8)
#define NGX_QUIC_VERSION(c) (0xff000000 + (c))
static u_char *ngx_quic_parse_int(u_char *pos, u_char *end, uint64_t *out);
static void ngx_quic_build_int(u_char **pos, uint64_t value);
@ -101,9 +103,18 @@ static ngx_int_t ngx_quic_parse_transport_param(u_char *p, u_char *end,
uint16_t id, ngx_quic_tp_t *dst);
/* currently only single version (selected at compile-time) is supported */
uint32_t ngx_quic_versions[] = {
NGX_QUIC_VERSION
#if (NGX_QUIC_DRAFT_VERSION >= 29)
/* pretend we support all versions in range draft-29..v1 */
NGX_QUIC_VERSION(29),
NGX_QUIC_VERSION(30),
NGX_QUIC_VERSION(31),
NGX_QUIC_VERSION(32),
/* QUICv1 */
0x00000001
#else
NGX_QUIC_VERSION(NGX_QUIC_DRAFT_VERSION)
#endif
};
#define NGX_QUIC_NVERSIONS \