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view src/event/quic/ngx_event_quic_migration.h @ 9280:da400acf3756

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QUIC: fixed close timer processing with early data. The ngx_quic_run() function uses qc->close timer to limit the handshake duration. Normally it is removed by ngx_quic_do_init_streams() which is called once when we are done with initial SSL processing. The problem happens when the client sends early data and streams are initialized in the ngx_quic_run() -> ngx_quic_handle_datagram() call. The order of set/remove timer calls is now reversed; the close timer is set up and the timer fires when assigned, starting the unexpected connection close process. The fix is to skip setting the timer if streams were initialized during handling of the initial datagram. The idle timer for quic is set anyway, and stream-related timeouts are managed by application layer.
author Vladimir Khomutov <vl@wbsrv.ru>
date Wed, 10 Apr 2024 09:38:10 +0300
parents cc16989c6d61
children
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/*
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_
#define _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>

#define NGX_QUIC_PATH_RETRIES   3

#define NGX_QUIC_PATH_PROBE     0
#define NGX_QUIC_PATH_ACTIVE    1
#define NGX_QUIC_PATH_BACKUP    2

#define ngx_quic_path_dbg(c, msg, path)                                       \
    ngx_log_debug7(NGX_LOG_DEBUG_EVENT, c->log, 0,                            \
                   "quic path seq:%uL %s tx:%O rx:%O valid:%d st:%d mtu:%uz", \
                   path->seqnum, msg, path->sent, path->received,             \
                   path->validated, path->state, path->mtu);

ngx_int_t ngx_quic_handle_path_challenge_frame(ngx_connection_t *c,
    ngx_quic_header_t *pkt, ngx_quic_path_challenge_frame_t *f);
ngx_int_t ngx_quic_handle_path_response_frame(ngx_connection_t *c,
    ngx_quic_path_challenge_frame_t *f);

ngx_quic_path_t *ngx_quic_new_path(ngx_connection_t *c,
    struct sockaddr *sockaddr, socklen_t socklen, ngx_quic_client_id_t *cid);
ngx_int_t ngx_quic_free_path(ngx_connection_t *c, ngx_quic_path_t *path);

ngx_int_t ngx_quic_set_path(ngx_connection_t *c, ngx_quic_header_t *pkt);
ngx_int_t ngx_quic_handle_migration(ngx_connection_t *c,
    ngx_quic_header_t *pkt);

void ngx_quic_path_handler(ngx_event_t *ev);

void ngx_quic_discover_path_mtu(ngx_connection_t *c, ngx_quic_path_t *path);
ngx_int_t ngx_quic_handle_path_mtu(ngx_connection_t *c,
    ngx_quic_path_t *path, uint64_t min, uint64_t max);

#endif /* _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_ */