Mercurial > hg > nginx
annotate src/event/quic/ngx_event_quic_migration.h @ 9189:fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
By default packets with these frames are expanded to 1200 bytes. Previously,
if anti-amplification limit did not allow this expansion, it was limited to
whatever size was allowed. However RFC 9000 clearly states no partial
expansion should happen in both cases.
Section 8.2.1. Initiating Path Validation:
An endpoint MUST expand datagrams that contain a PATH_CHALLENGE frame
to at least the smallest allowed maximum datagram size of 1200 bytes,
unless the anti-amplification limit for the path does not permit
sending a datagram of this size.
Section 8.2.2. Path Validation Responses:
An endpoint MUST expand datagrams that contain a PATH_RESPONSE frame
to at least the smallest allowed maximum datagram size of 1200 bytes.
...
However, an endpoint MUST NOT expand the datagram containing the
PATH_RESPONSE if the resulting data exceeds the anti-amplification limit.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Wed, 29 Nov 2023 18:13:25 +0400 |
parents | 58afcd72446f |
children | cc16989c6d61 |
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QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
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1 |
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2 /* |
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3 * Copyright (C) Nginx, Inc. |
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4 */ |
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5 |
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6 |
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7 #ifndef _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_ |
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8 #define _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_ |
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9 |
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10 |
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11 #include <ngx_config.h> |
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12 #include <ngx_core.h> |
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13 |
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14 #define NGX_QUIC_PATH_RETRIES 3 |
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16 #define NGX_QUIC_PATH_PROBE 0 |
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17 #define NGX_QUIC_PATH_ACTIVE 1 |
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18 #define NGX_QUIC_PATH_BACKUP 2 |
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20 #define ngx_quic_path_dbg(c, msg, path) \ |
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21 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, c->log, 0, \ |
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22 "quic path seq:%uL %s tx:%O rx:%O valid:%ui st:%d mtu:%uz",\ |
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23 path->seqnum, msg, path->sent, path->received, \ |
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24 path->validated, path->state, path->mtu); |
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25 |
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26 ngx_int_t ngx_quic_handle_path_challenge_frame(ngx_connection_t *c, |
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27 ngx_quic_header_t *pkt, ngx_quic_path_challenge_frame_t *f); |
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28 ngx_int_t ngx_quic_handle_path_response_frame(ngx_connection_t *c, |
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29 ngx_quic_path_challenge_frame_t *f); |
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31 ngx_quic_path_t *ngx_quic_new_path(ngx_connection_t *c, |
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32 struct sockaddr *sockaddr, socklen_t socklen, ngx_quic_client_id_t *cid); |
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33 ngx_int_t ngx_quic_free_path(ngx_connection_t *c, ngx_quic_path_t *path); |
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34 |
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35 ngx_int_t ngx_quic_set_path(ngx_connection_t *c, ngx_quic_header_t *pkt); |
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36 ngx_int_t ngx_quic_handle_migration(ngx_connection_t *c, |
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37 ngx_quic_header_t *pkt); |
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38 |
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39 void ngx_quic_path_handler(ngx_event_t *ev); |
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40 |
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41 void ngx_quic_discover_path_mtu(ngx_connection_t *c, ngx_quic_path_t *path); |
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42 ngx_int_t ngx_quic_handle_path_mtu(ngx_connection_t *c, |
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43 ngx_quic_path_t *path, uint64_t min, uint64_t max); |
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44 |
8747 | 45 #endif /* _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_ */ |