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view src/stream/ngx_stream_ssl_module.h @ 9208:2ed3f57dca0a

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QUIC: fixed unsent MTU probe acknowledgement. Previously if an MTU probe send failed early in ngx_quic_frame_sendto() due to allocation error or congestion control, the application level packet number was not increased, but was still saved as MTU probe packet number. Later when a packet with this number was acknowledged, the unsent MTU probe was acknowledged as well. This could result in discovering a bigger MTU than supported by the path, which could lead to EMSGSIZE (Message too long) errors while sending further packets. The problem existed since PMTUD was introduced in 58afcd72446f (1.25.2). Back then only the unlikely memory allocation error could trigger it. However in efcdaa66df2e congestion control was added to ngx_quic_frame_sendto() which can now trigger the issue with a higher probability.
author Roman Arutyunyan <arut@nginx.com>
date Wed, 14 Feb 2024 16:56:28 +0400
parents b9e02e9b2f1d
children
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_STREAM_SSL_H_INCLUDED_
#define _NGX_STREAM_SSL_H_INCLUDED_


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


typedef struct {
    ngx_msec_t       handshake_timeout;

    ngx_flag_t       prefer_server_ciphers;

    ngx_ssl_t        ssl;

    ngx_uint_t       listen;
    ngx_uint_t       protocols;

    ngx_uint_t       verify;
    ngx_uint_t       verify_depth;

    ssize_t          builtin_session_cache;

    time_t           session_timeout;

    ngx_array_t     *certificates;
    ngx_array_t     *certificate_keys;

    ngx_array_t     *certificate_values;
    ngx_array_t     *certificate_key_values;

    ngx_str_t        dhparam;
    ngx_str_t        ecdh_curve;
    ngx_str_t        client_certificate;
    ngx_str_t        trusted_certificate;
    ngx_str_t        crl;
    ngx_str_t        alpn;

    ngx_str_t        ciphers;

    ngx_array_t     *passwords;
    ngx_array_t     *conf_commands;

    ngx_shm_zone_t  *shm_zone;

    ngx_flag_t       session_tickets;
    ngx_array_t     *session_ticket_keys;

    u_char          *file;
    ngx_uint_t       line;
} ngx_stream_ssl_conf_t;


extern ngx_module_t  ngx_stream_ssl_module;


#endif /* _NGX_STREAM_SSL_H_INCLUDED_ */