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Connection states code cleanup.

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+ ngx_quic_init_ssl_methods() is no longer there, we setup methods on SSL
   connection directly.

 + the handshake_handler is actually a generic quic input handler

 + updated c->log->action and debug to reflect changes and be more informative

 + c->quic is always set in ngx_quic_input()

 + the quic connection state is set by the results of SSL_do_handshake();
This commit is contained in:
Vladimir Homutov 2020-03-23 14:53:04 +03:00
parent b3129b46f6
commit 5018d9eecc
2 changed files with 37 additions and 16 deletions
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51
src/event/ngx_event_quic.c
View File

@ -9,6 +9,13 @@
#include <ngx_event.h>
typedef enum {
NGX_QUIC_ST_INITIAL, /* connection just created */
NGX_QUIC_ST_HANDSHAKE, /* handshake started */
NGX_QUIC_ST_APPLICATION /* handshake complete */
} ngx_quic_state_t;
typedef struct {
ngx_rbtree_node_t node;
ngx_buf_t *b;
@ -35,6 +42,8 @@ struct ngx_quic_connection_s {
ngx_uint_t client_tp_done;
ngx_quic_tp_t tp;
ngx_quic_state_t state;
/* current packet numbers for each namespace */
ngx_uint_t initial_pn;
ngx_uint_t handshake_pn;
@ -75,7 +84,7 @@ static int ngx_quic_send_alert(ngx_ssl_conn_t *ssl_conn,
static ngx_int_t ngx_quic_new_connection(ngx_connection_t *c, ngx_ssl_t *ssl,
ngx_quic_tp_t *tp, ngx_quic_header_t *pkt);
static ngx_int_t ngx_quic_init_connection(ngx_connection_t *c);
static void ngx_quic_handshake_handler(ngx_event_t *rev);
static void ngx_quic_input_handler(ngx_event_t *rev);
static void ngx_quic_close_connection(ngx_connection_t *c);
static ngx_int_t ngx_quic_input(ngx_connection_t *c, ngx_buf_t *b);
@ -328,9 +337,9 @@ ngx_quic_run(ngx_connection_t *c, ngx_ssl_t *ssl, ngx_quic_tp_t *tp,
ngx_buf_t *b;
ngx_quic_header_t pkt;
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic handshake");
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic run");
c->log->action = "QUIC handshaking";
c->log->action = "QUIC initialization";
ngx_memzero(&pkt, sizeof(ngx_quic_header_t));
@ -352,7 +361,7 @@ ngx_quic_run(ngx_connection_t *c, ngx_ssl_t *ssl, ngx_quic_tp_t *tp,
ngx_add_timer(c->read, timeout);
c->read->handler = ngx_quic_handshake_handler;
c->read->handler = ngx_quic_input_handler;
return;
}
@ -388,6 +397,8 @@ ngx_quic_new_connection(ngx_connection_t *c, ngx_ssl_t *ssl, ngx_quic_tp_t *tp,
return NGX_ERROR;
}
qc->state = NGX_QUIC_ST_INITIAL;
ngx_rbtree_init(&qc->streams.tree, &qc->streams.sentinel,
ngx_quic_rbtree_insert_stream);
@ -480,6 +491,8 @@ ngx_quic_init_connection(ngx_connection_t *c)
return NGX_ERROR;
}
qc->state = NGX_QUIC_ST_HANDSHAKE;
n = SSL_do_handshake(ssl_conn);
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_do_handshake: %d", n);
@ -501,7 +514,7 @@ ngx_quic_init_connection(ngx_connection_t *c)
static void
ngx_quic_handshake_handler(ngx_event_t *rev)
ngx_quic_input_handler(ngx_event_t *rev)
{
ssize_t n;
ngx_buf_t b;
@ -515,7 +528,7 @@ ngx_quic_handshake_handler(ngx_event_t *rev)
c = rev->data;
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, rev->log, 0, "quic handshake handler");
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, rev->log, 0, "quic input handler");
if (rev->timedout) {
ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
@ -586,15 +599,11 @@ ngx_quic_input(ngx_connection_t *c, ngx_buf_t *b)
ngx_int_t rc;
ngx_quic_header_t pkt;
if (c->quic == NULL) {
// XXX: possible?
ngx_log_error(NGX_LOG_INFO, c->log, 0, "BUG: no QUIC in connection");
return NGX_ERROR;
}
p = b->start;
do {
c->log->action = "processing quic packet";
ngx_memzero(&pkt, sizeof(ngx_quic_header_t));
pkt.raw = b;
pkt.data = p;
@ -647,6 +656,8 @@ ngx_quic_initial_input(ngx_connection_t *c, ngx_quic_header_t *pkt)
ngx_ssl_conn_t *ssl_conn;
ngx_quic_connection_t *qc;
c->log->action = "processing initial quic packet";
qc = c->quic;
ssl_conn = c->ssl->connection;
@ -674,6 +685,8 @@ ngx_quic_handshake_input(ngx_connection_t *c, ngx_quic_header_t *pkt)
{
ngx_quic_connection_t *qc;
c->log->action = "processing handshake quic packet";
qc = c->quic;
/* extract cleartext data into pkt */
@ -727,6 +740,8 @@ ngx_quic_app_input(ngx_connection_t *c, ngx_quic_header_t *pkt)
{
ngx_quic_connection_t *qc;
c->log->action = "processing application data quic packet";
qc = c->quic;
if (qc->secrets.client.ad.key.len == 0) {
@ -759,6 +774,8 @@ ngx_quic_payload_handler(ngx_connection_t *c, ngx_quic_header_t *pkt)
ngx_quic_frame_t frame, *ack_frame;
ngx_quic_connection_t *qc;
c->log->action = "processing quic payload";
qc = c->quic;
p = pkt->payload.data;
@ -957,11 +974,17 @@ ngx_quic_handle_crypto_frame(ngx_connection_t *c, ngx_quic_header_t *pkt,
if (sslerr == SSL_ERROR_SSL) {
ngx_ssl_error(NGX_LOG_ERR, c->log, 0, "SSL_do_handshake() failed");
}
}
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
} else if (n == 1) {
c->quic->state = NGX_QUIC_ST_APPLICATION;
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
"quic ssl cipher: %s", SSL_get_cipher(ssl_conn));
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
"handshake completed successfully");
}
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
"SSL_quic_read_level: %d, SSL_quic_write_level: %d",
(int) SSL_quic_read_level(ssl_conn),

2
src/event/ngx_event_quic.h
View File

@ -46,8 +46,6 @@ struct ngx_quic_stream_s {
};
void ngx_quic_init_ssl_methods(SSL_CTX* ctx);
void ngx_quic_run(ngx_connection_t *c, ngx_ssl_t *ssl, ngx_quic_tp_t *tp,
ngx_msec_t timeout, ngx_connection_handler_pt handler);
ngx_connection_t *ngx_quic_create_uni_stream(ngx_connection_t *c);