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QUIC: multiple versions support in ALPN.

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Previously, a version based on NGX_QUIC_DRAFT_VERSION was always set.
Now it is taken from the negotiated QUIC version that may differ.
This commit is contained in:
Sergey Kandaurov 2020-11-10 00:32:56 +03:00
parent 7f43460387
commit b19923f91b
5 changed files with 43 additions and 14 deletions
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11
src/event/ngx_event_quic.c
View File

@ -5813,3 +5813,14 @@ ngx_quic_free_frame(ngx_connection_t *c, ngx_quic_frame_t *frame)
"quic free frame n:%ui", qc->nframes);
#endif
}
uint32_t
ngx_quic_version(ngx_connection_t *c)
{
uint32_t version;
version = c->quic->version;
return (version & 0xff000000) == 0xff000000 ? version & 0xff : version;
}

1
src/event/ngx_event_quic.h
View File

@ -122,6 +122,7 @@ void ngx_quic_run(ngx_connection_t *c, ngx_quic_conf_t *conf);
ngx_connection_t *ngx_quic_open_stream(ngx_connection_t *c, ngx_uint_t bidi);
void ngx_quic_finalize_connection(ngx_connection_t *c, ngx_uint_t err,
const char *reason);
uint32_t ngx_quic_version(ngx_connection_t *c);
/********************************* DEBUG *************************************/

5
src/http/modules/ngx_http_quic_module.h
View File

@ -14,9 +14,8 @@
#include <ngx_http.h>
#define NGX_HTTP_QUIC_ALPN(s) NGX_HTTP_QUIC_ALPN_DRAFT(s)
#define NGX_HTTP_QUIC_ALPN_DRAFT(s) "\x05hq-" #s
#define NGX_HTTP_QUIC_ALPN_ADVERTISE NGX_HTTP_QUIC_ALPN(NGX_QUIC_DRAFT_VERSION)
#define NGX_HTTP_QUIC_ALPN_ADVERTISE "\x02hq"
#define NGX_HTTP_QUIC_ALPN_DRAFT_FMT "\x05hq-%02uD"
extern ngx_module_t ngx_http_quic_module;

35
src/http/modules/ngx_http_ssl_module.c
View File

@ -418,6 +418,9 @@ ngx_http_ssl_alpn_select(ngx_ssl_conn_t *ssl_conn, const unsigned char **out,
unsigned char *outlen, const unsigned char *in, unsigned int inlen,
void *arg)
{
#if (NGX_HTTP_QUIC)
const char *fmt;
#endif
unsigned int srvlen;
unsigned char *srv;
#if (NGX_DEBUG)
@ -452,16 +455,32 @@ ngx_http_ssl_alpn_select(ngx_ssl_conn_t *ssl_conn, const unsigned char **out,
} else
#endif
#if (NGX_HTTP_V3)
if (hc->addr_conf->http3) {
srv = (unsigned char *) NGX_HTTP_V3_ALPN_ADVERTISE;
srvlen = sizeof(NGX_HTTP_V3_ALPN_ADVERTISE) - 1;
} else
#endif
#if (NGX_HTTP_QUIC)
if (hc->addr_conf->quic) {
srv = (unsigned char *) NGX_HTTP_QUIC_ALPN_ADVERTISE;
srvlen = sizeof(NGX_HTTP_QUIC_ALPN_ADVERTISE) - 1;
#if (NGX_HTTP_V3)
if (hc->addr_conf->http3) {
srv = (unsigned char *) NGX_HTTP_V3_ALPN_ADVERTISE;
srvlen = sizeof(NGX_HTTP_V3_ALPN_ADVERTISE) - 1;
fmt = NGX_HTTP_V3_ALPN_DRAFT_FMT;
} else
#endif
{
srv = (unsigned char *) NGX_HTTP_QUIC_ALPN_ADVERTISE;
srvlen = sizeof(NGX_HTTP_QUIC_ALPN_ADVERTISE) - 1;
fmt = NGX_HTTP_QUIC_ALPN_DRAFT_FMT;
}
/* QUIC draft */
if (ngx_quic_version(c) > 1) {
srv = ngx_pnalloc(c->pool, sizeof("\x05h3-xx") - 1);
if (srv == NULL) {
return SSL_TLSEXT_ERR_NOACK;
}
srvlen = ngx_sprintf(srv, fmt, ngx_quic_version(c)) - srv;
}
} else
#endif
{

5
src/http/v3/ngx_http_v3.h
View File

@ -15,9 +15,8 @@
#include <ngx_http_v3_parse.h>
#define NGX_HTTP_V3_ALPN(s) NGX_HTTP_V3_ALPN_DRAFT(s)
#define NGX_HTTP_V3_ALPN_DRAFT(s) "\x05h3-" #s
#define NGX_HTTP_V3_ALPN_ADVERTISE NGX_HTTP_V3_ALPN(NGX_QUIC_DRAFT_VERSION)
#define NGX_HTTP_V3_ALPN_ADVERTISE "\x02h3"
#define NGX_HTTP_V3_ALPN_DRAFT_FMT "\x05h3-%02uD"
#define NGX_HTTP_V3_VARLEN_INT_LEN 4
#define NGX_HTTP_V3_PREFIX_INT_LEN 11