Mercurial > hg > nginx
annotate src/event/quic/ngx_event_quic_migration.h @ 9196:6c8595b77e66
QUIC: path aware in-flight bytes accounting.
On-packet acknowledgement is made path aware, as per RFC 9000, Section 9.4:
Packets sent on the old path MUST NOT contribute to congestion control
or RTT estimation for the new path.
To make this possible in a single congestion control context, the first packet
to be sent after the new path has been validated, which includes resetting the
congestion controller and RTT estimator, is now remembered in the connection.
Packets sent previously, such as on the old path, are not taken into account.
Note that although the packet number is saved per-connection, the added checks
affect application level packets only. For non-application level packets,
which are only processed prior to the handshake is complete, the remembered
packet number remains set to zero.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Tue, 12 Dec 2023 20:21:12 +0400 |
parents | 58afcd72446f |
children | cc16989c6d61 |
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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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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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39 void ngx_quic_path_handler(ngx_event_t *ev); |
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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_ */ |