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annotate src/event/quic/ngx_event_quic_migration.h @ 8763:4117aa7fa38e quic

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QUIC: connection migration. The patch adds proper transitions between multiple networking addresses that can be used by a single quic connection. New networking paths are validated using PATH_CHALLENGE/PATH_RESPONSE frames.
author Vladimir Homutov <vl@nginx.com>
date Thu, 29 Apr 2021 15:35:02 +0300
parents c8bda5e1e662
children 5186ee5a94b9
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2 /*
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3 * Copyright (C) Nginx, Inc.
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4 */
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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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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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14 #define NGX_QUIC_PATH_RETRIES 3
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15
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16 #define NGX_QUIC_PATH_NEW 0
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17 #define NGX_QUIC_PATH_VALIDATING 1
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18 #define NGX_QUIC_PATH_VALIDATED 2
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20 #define NGX_QUIC_PATH_VALID_TIME 600 /* seconds */
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23 #define ngx_quic_path_state_str(p) \
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24 ((p)->state == NGX_QUIC_PATH_NEW) ? "new" : \
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25 (((p)->state == NGX_QUIC_PATH_VALIDATED) ? "validated" : "validating")
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28 ngx_int_t ngx_quic_handle_path_challenge_frame(ngx_connection_t *c,
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29 ngx_quic_header_t *pkt, ngx_quic_path_challenge_frame_t *f);
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30 ngx_int_t ngx_quic_handle_path_response_frame(ngx_connection_t *c,
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31 ngx_quic_header_t *pkt, ngx_quic_path_challenge_frame_t *f);
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33 ngx_quic_path_t *ngx_quic_add_path(ngx_connection_t *c,
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34 struct sockaddr *sockaddr, socklen_t socklen);
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35
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36 ngx_int_t ngx_quic_check_migration(ngx_connection_t *c,
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37 ngx_quic_header_t *pkt);
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38 ngx_int_t ngx_quic_update_paths(ngx_connection_t *c, ngx_quic_header_t *pkt);
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39 ngx_int_t ngx_quic_handle_migration(ngx_connection_t *c,
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40 ngx_quic_header_t *pkt);
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41
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42 void ngx_quic_path_validation_handler(ngx_event_t *ev);
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43
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44 #endif /* _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_ */