Mercurial > hg > nginx
annotate src/event/quic/ngx_event_quic_migration.c @ 9192:efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Previously ngx_quic_frame_sendto() ignored congestion control and did not
contribute to in_flight counter.
Now congestion control window is checked unless ignore_congestion flag is set.
Also, in_flight counter is incremented and the frame is stored in ctx->sent
queue if it's ack-eliciting. This behavior is now similar to
ngx_quic_output_packet().
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Wed, 29 Nov 2023 21:41:29 +0400 |
parents | 618132842e7c |
children | a6f79f044de5 |
rev | line source |
---|---|
8737
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
1 |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
2 /* |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
3 * Copyright (C) Nginx, Inc. |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
4 */ |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
5 |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
6 |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
7 #include <ngx_config.h> |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
8 #include <ngx_core.h> |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
9 #include <ngx_event.h> |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
10 #include <ngx_event_quic_connection.h> |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
11 |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
12 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
13 #define NGX_QUIC_PATH_MTU_DELAY 100 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
14 #define NGX_QUIC_PATH_MTU_PRECISION 16 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
15 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
16 |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
17 static void ngx_quic_set_connection_path(ngx_connection_t *c, |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
18 ngx_quic_path_t *path); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
19 static ngx_int_t ngx_quic_validate_path(ngx_connection_t *c, |
8944
b7284807b4fa
QUIC: refactored ngx_quic_validate_path().
Vladimir Homutov <vl@nginx.com>
parents:
8943
diff
changeset
|
20 ngx_quic_path_t *path); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
21 static ngx_int_t ngx_quic_send_path_challenge(ngx_connection_t *c, |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
22 ngx_quic_path_t *path); |
9098
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
23 static void ngx_quic_set_path_timer(ngx_connection_t *c); |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
24 static ngx_int_t ngx_quic_expire_path_validation(ngx_connection_t *c, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
25 ngx_quic_path_t *path); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
26 static ngx_int_t ngx_quic_expire_path_mtu_delay(ngx_connection_t *c, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
27 ngx_quic_path_t *path); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
28 static ngx_int_t ngx_quic_expire_path_mtu_discovery(ngx_connection_t *c, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
29 ngx_quic_path_t *path); |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
30 static ngx_quic_path_t *ngx_quic_get_path(ngx_connection_t *c, ngx_uint_t tag); |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
31 static ngx_int_t ngx_quic_send_path_mtu_probe(ngx_connection_t *c, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
32 ngx_quic_path_t *path); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
33 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
34 |
8737
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
35 ngx_int_t |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
36 ngx_quic_handle_path_challenge_frame(ngx_connection_t *c, |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
37 ngx_quic_header_t *pkt, ngx_quic_path_challenge_frame_t *f) |
8737
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
38 { |
9189
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
39 size_t min; |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
40 ngx_quic_frame_t *fp; |
8737
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
41 ngx_quic_connection_t *qc; |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
42 |
9191
618132842e7c
QUIC: ignore duplicate PATH_CHALLENGE frames.
Roman Arutyunyan <arut@nginx.com>
parents:
9190
diff
changeset
|
43 if (pkt->level != ssl_encryption_application || pkt->path_challenged) { |
618132842e7c
QUIC: ignore duplicate PATH_CHALLENGE frames.
Roman Arutyunyan <arut@nginx.com>
parents:
9190
diff
changeset
|
44 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, |
618132842e7c
QUIC: ignore duplicate PATH_CHALLENGE frames.
Roman Arutyunyan <arut@nginx.com>
parents:
9190
diff
changeset
|
45 "quic ignoring PATH_CHALLENGE"); |
618132842e7c
QUIC: ignore duplicate PATH_CHALLENGE frames.
Roman Arutyunyan <arut@nginx.com>
parents:
9190
diff
changeset
|
46 return NGX_OK; |
618132842e7c
QUIC: ignore duplicate PATH_CHALLENGE frames.
Roman Arutyunyan <arut@nginx.com>
parents:
9190
diff
changeset
|
47 } |
618132842e7c
QUIC: ignore duplicate PATH_CHALLENGE frames.
Roman Arutyunyan <arut@nginx.com>
parents:
9190
diff
changeset
|
48 |
618132842e7c
QUIC: ignore duplicate PATH_CHALLENGE frames.
Roman Arutyunyan <arut@nginx.com>
parents:
9190
diff
changeset
|
49 pkt->path_challenged = 1; |
618132842e7c
QUIC: ignore duplicate PATH_CHALLENGE frames.
Roman Arutyunyan <arut@nginx.com>
parents:
9190
diff
changeset
|
50 |
8737
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
51 qc = ngx_quic_get_connection(c); |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
52 |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
53 fp = ngx_quic_alloc_frame(c); |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
54 if (fp == NULL) { |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
55 return NGX_ERROR; |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
56 } |
8933
02a9ad88e2df
QUIC: added missing frame initialization.
Vladimir Homutov <vl@nginx.com>
parents:
8932
diff
changeset
|
57 |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
58 fp->level = ssl_encryption_application; |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
59 fp->type = NGX_QUIC_FT_PATH_RESPONSE; |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
60 fp->u.path_response = *f; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
61 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
62 /* |
8797
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
63 * RFC 9000, 8.2.2. Path Validation Responses |
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
64 * |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
65 * A PATH_RESPONSE frame MUST be sent on the network path where the |
8797
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
66 * PATH_CHALLENGE frame was received. |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
67 */ |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
68 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
69 /* |
8901
a951e0809044
QUIC: fixed PATH_RESPONSE frame expansion.
Vladimir Homutov <vl@nginx.com>
parents:
8822
diff
changeset
|
70 * An endpoint MUST expand datagrams that contain a PATH_RESPONSE frame |
a951e0809044
QUIC: fixed PATH_RESPONSE frame expansion.
Vladimir Homutov <vl@nginx.com>
parents:
8822
diff
changeset
|
71 * to at least the smallest allowed maximum datagram size of 1200 bytes. |
9189
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
72 * ... |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
73 * However, an endpoint MUST NOT expand the datagram containing the |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
74 * PATH_RESPONSE if the resulting data exceeds the anti-amplification limit. |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
75 */ |
9189
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
76 |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
77 min = (ngx_quic_path_limit(c, pkt->path, 1200) < 1200) ? 0 : 1200; |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
78 |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
79 if (ngx_quic_frame_sendto(c, fp, min, pkt->path) == NGX_ERROR) { |
8737
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
80 return NGX_ERROR; |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
81 } |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
82 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
83 if (pkt->path == qc->path) { |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
84 /* |
8797
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
85 * RFC 9000, 9.3.3. Off-Path Packet Forwarding |
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
86 * |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
87 * An endpoint that receives a PATH_CHALLENGE on an active path SHOULD |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
88 * send a non-probing packet in response. |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
89 */ |
8737
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
90 |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
91 fp = ngx_quic_alloc_frame(c); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
92 if (fp == NULL) { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
93 return NGX_ERROR; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
94 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
95 |
8778
5186ee5a94b9
QUIC: simplified sending 1-RTT only frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8777
diff
changeset
|
96 fp->level = ssl_encryption_application; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
97 fp->type = NGX_QUIC_FT_PING; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
98 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
99 ngx_quic_queue_frame(qc, fp); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
100 } |
8737
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
101 |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
102 return NGX_OK; |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
103 } |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
104 |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
105 |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
106 ngx_int_t |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
107 ngx_quic_handle_path_response_frame(ngx_connection_t *c, |
8778
5186ee5a94b9
QUIC: simplified sending 1-RTT only frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8777
diff
changeset
|
108 ngx_quic_path_challenge_frame_t *f) |
8737
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
109 { |
8943
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
110 ngx_uint_t rst; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
111 ngx_queue_t *q; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
112 ngx_quic_path_t *path, *prev; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
113 ngx_quic_connection_t *qc; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
114 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
115 qc = ngx_quic_get_connection(c); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
116 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
117 /* |
8797
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
118 * RFC 9000, 8.2.3. Successful Path Validation |
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
119 * |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
120 * A PATH_RESPONSE frame received on any network path validates the path |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
121 * on which the PATH_CHALLENGE was sent. |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
122 */ |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
123 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
124 for (q = ngx_queue_head(&qc->paths); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
125 q != ngx_queue_sentinel(&qc->paths); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
126 q = ngx_queue_next(q)) |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
127 { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
128 path = ngx_queue_data(q, ngx_quic_path_t, queue); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
129 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
130 if (path->state != NGX_QUIC_PATH_VALIDATING) { |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
131 continue; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
132 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
133 |
9189
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
134 if (ngx_memcmp(path->challenge[0], f->data, sizeof(f->data)) == 0 |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
135 || ngx_memcmp(path->challenge[1], f->data, sizeof(f->data)) == 0) |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
136 { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
137 goto valid; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
138 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
139 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
140 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
141 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, |
9015
a2fbae359828
QUIC: fixed indentation.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8997
diff
changeset
|
142 "quic stale PATH_RESPONSE ignored"); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
143 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
144 return NGX_OK; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
145 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
146 valid: |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
147 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
148 /* |
8797
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
149 * RFC 9000, 9.4. Loss Detection and Congestion Control |
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
150 * |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
151 * On confirming a peer's ownership of its new address, |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
152 * an endpoint MUST immediately reset the congestion controller |
8797
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
153 * and round-trip time estimator for the new path to initial values |
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
154 * unless the only change in the peer's address is its port number. |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
155 */ |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
156 |
8943
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
157 rst = 1; |
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
158 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
159 prev = ngx_quic_get_path(c, NGX_QUIC_PATH_BACKUP); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
160 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
161 if (prev != NULL) { |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
162 |
8943
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
163 if (ngx_cmp_sockaddr(prev->sockaddr, prev->socklen, |
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
164 path->sockaddr, path->socklen, 0) |
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
165 == NGX_OK) |
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
166 { |
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
167 /* address did not change */ |
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
168 rst = 0; |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
169 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
170 path->mtu = prev->mtu; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
171 path->max_mtu = prev->max_mtu; |
8943
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
172 } |
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
173 } |
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
174 |
118a34e32121
QUIC: added missing check for backup path existence.
Vladimir Homutov <vl@nginx.com>
parents:
8940
diff
changeset
|
175 if (rst) { |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
176 ngx_memzero(&qc->congestion, sizeof(ngx_quic_congestion_t)); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
177 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
178 qc->congestion.window = ngx_min(10 * qc->tp.max_udp_payload_size, |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
179 ngx_max(2 * qc->tp.max_udp_payload_size, |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
180 14720)); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
181 qc->congestion.ssthresh = (size_t) -1; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
182 qc->congestion.recovery_start = ngx_current_msec; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
183 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
184 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
185 /* |
8797
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
186 * RFC 9000, 9.3. Responding to Connection Migration |
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
187 * |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
188 * After verifying a new client address, the server SHOULD |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
189 * send new address validation tokens (Section 8) to the client. |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
190 */ |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
191 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
192 if (ngx_quic_send_new_token(c, path) != NGX_OK) { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
193 return NGX_ERROR; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
194 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
195 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
196 ngx_log_error(NGX_LOG_INFO, c->log, 0, |
8997
fab36e4abf83
QUIC: got rid of hash symbol in backup and logging.
Vladimir Homutov <vl@nginx.com>
parents:
8985
diff
changeset
|
197 "quic path seq:%uL addr:%V successfully validated", |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
198 path->seqnum, &path->addr_text); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
199 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
200 ngx_quic_path_dbg(c, "is validated", path); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
201 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
202 path->validated = 1; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
203 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
204 ngx_quic_discover_path_mtu(c, path); |
9098
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
205 |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
206 return NGX_OK; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
207 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
208 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
209 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
210 ngx_quic_path_t * |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
211 ngx_quic_new_path(ngx_connection_t *c, |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
212 struct sockaddr *sockaddr, socklen_t socklen, ngx_quic_client_id_t *cid) |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
213 { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
214 ngx_queue_t *q; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
215 ngx_quic_path_t *path; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
216 ngx_quic_connection_t *qc; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
217 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
218 qc = ngx_quic_get_connection(c); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
219 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
220 if (!ngx_queue_empty(&qc->free_paths)) { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
221 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
222 q = ngx_queue_head(&qc->free_paths); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
223 path = ngx_queue_data(q, ngx_quic_path_t, queue); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
224 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
225 ngx_queue_remove(&path->queue); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
226 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
227 ngx_memzero(path, sizeof(ngx_quic_path_t)); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
228 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
229 } else { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
230 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
231 path = ngx_pcalloc(c->pool, sizeof(ngx_quic_path_t)); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
232 if (path == NULL) { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
233 return NULL; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
234 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
235 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
236 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
237 ngx_queue_insert_tail(&qc->paths, &path->queue); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
238 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
239 path->cid = cid; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
240 cid->used = 1; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
241 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
242 path->seqnum = qc->path_seqnum++; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
243 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
244 path->sockaddr = &path->sa.sockaddr; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
245 path->socklen = socklen; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
246 ngx_memcpy(path->sockaddr, sockaddr, socklen); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
247 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
248 path->addr_text.data = path->text; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
249 path->addr_text.len = ngx_sock_ntop(sockaddr, socklen, path->text, |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
250 NGX_SOCKADDR_STRLEN, 1); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
251 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
252 path->mtu = NGX_QUIC_MIN_INITIAL_SIZE; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
253 |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
254 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
8997
fab36e4abf83
QUIC: got rid of hash symbol in backup and logging.
Vladimir Homutov <vl@nginx.com>
parents:
8985
diff
changeset
|
255 "quic path seq:%uL created addr:%V", |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
256 path->seqnum, &path->addr_text); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
257 return path; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
258 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
259 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
260 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
261 static ngx_quic_path_t * |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
262 ngx_quic_get_path(ngx_connection_t *c, ngx_uint_t tag) |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
263 { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
264 ngx_queue_t *q; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
265 ngx_quic_path_t *path; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
266 ngx_quic_connection_t *qc; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
267 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
268 qc = ngx_quic_get_connection(c); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
269 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
270 for (q = ngx_queue_head(&qc->paths); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
271 q != ngx_queue_sentinel(&qc->paths); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
272 q = ngx_queue_next(q)) |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
273 { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
274 path = ngx_queue_data(q, ngx_quic_path_t, queue); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
275 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
276 if (path->tag == tag) { |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
277 return path; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
278 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
279 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
280 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
281 return NULL; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
282 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
283 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
284 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
285 ngx_int_t |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
286 ngx_quic_set_path(ngx_connection_t *c, ngx_quic_header_t *pkt) |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
287 { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
288 off_t len; |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
289 ngx_queue_t *q; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
290 ngx_quic_path_t *path, *probe; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
291 ngx_quic_socket_t *qsock; |
8972
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
292 ngx_quic_send_ctx_t *ctx; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
293 ngx_quic_client_id_t *cid; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
294 ngx_quic_connection_t *qc; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
295 |
8939
ddd5e5c0f87d
QUIC: improved path validation.
Vladimir Homutov <vl@nginx.com>
parents:
8933
diff
changeset
|
296 qc = ngx_quic_get_connection(c); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
297 qsock = ngx_quic_get_socket(c); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
298 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
299 len = pkt->raw->last - pkt->raw->start; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
300 |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
parents:
9015
diff
changeset
|
301 if (c->udp->buffer == NULL) { |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
302 /* first ever packet in connection, path already exists */ |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
303 path = qc->path; |
8913
40445fc7c403
QUIC: fixed migration during NAT rebinding.
Vladimir Homutov <vl@nginx.com>
parents:
8912
diff
changeset
|
304 goto update; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
305 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
306 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
307 probe = NULL; |
8777
d5f93733c17d
QUIC: relaxed client id requirements.
Vladimir Homutov <vl@nginx.com>
parents:
8763
diff
changeset
|
308 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
309 for (q = ngx_queue_head(&qc->paths); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
310 q != ngx_queue_sentinel(&qc->paths); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
311 q = ngx_queue_next(q)) |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
312 { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
313 path = ngx_queue_data(q, ngx_quic_path_t, queue); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
314 |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
parents:
9015
diff
changeset
|
315 if (ngx_cmp_sockaddr(&qsock->sockaddr.sockaddr, qsock->socklen, |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
316 path->sockaddr, path->socklen, 1) |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
317 == NGX_OK) |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
318 { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
319 goto update; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
320 } |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
321 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
322 if (path->tag == NGX_QUIC_PATH_PROBE) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
323 probe = path; |
8777
d5f93733c17d
QUIC: relaxed client id requirements.
Vladimir Homutov <vl@nginx.com>
parents:
8763
diff
changeset
|
324 } |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
325 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
326 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
327 /* packet from new path, drop current probe, if any */ |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
328 |
8972
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
329 ctx = ngx_quic_get_send_ctx(qc, pkt->level); |
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
330 |
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
331 /* |
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
332 * only accept highest-numbered packets to prevent connection id |
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
333 * exhaustion by excessive probing packets from unknown paths |
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
334 */ |
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
335 if (pkt->pn != ctx->largest_pn) { |
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
336 return NGX_DONE; |
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
337 } |
077a1e403446
QUIC: additional limit for probing packets.
Vladimir Homutov <vl@nginx.com>
parents:
8971
diff
changeset
|
338 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
339 if (probe && ngx_quic_free_path(c, probe) != NGX_OK) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
340 return NGX_ERROR; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
341 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
342 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
343 /* new path requires new client id */ |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
344 cid = ngx_quic_next_client_id(c); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
345 if (cid == NULL) { |
9029
28fc35b71d75
QUIC: "info" logging level on insufficient client connection ids.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9017
diff
changeset
|
346 ngx_log_error(NGX_LOG_INFO, c->log, 0, |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
347 "quic no available client ids for new path"); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
348 /* stop processing of this datagram */ |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
349 return NGX_DONE; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
350 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
351 |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
parents:
9015
diff
changeset
|
352 path = ngx_quic_new_path(c, &qsock->sockaddr.sockaddr, qsock->socklen, cid); |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
353 if (path == NULL) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
354 return NGX_ERROR; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
355 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
356 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
357 path->tag = NGX_QUIC_PATH_PROBE; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
358 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
359 /* |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
360 * client arrived using new path and previously seen DCID, |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
361 * this indicates NAT rebinding (or bad client) |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
362 */ |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
363 if (qsock->used) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
364 pkt->rebound = 1; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
365 } |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
366 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
367 update: |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
368 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
369 qsock->used = 1; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
370 pkt->path = path; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
371 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
372 /* TODO: this may be too late in some cases; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
373 * for example, if error happens during decrypt(), we cannot |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
374 * send CC, if error happens in 1st packet, due to amplification |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
375 * limit, because path->received = 0 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
376 * |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
377 * should we account garbage as received or only decrypting packets? |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
378 */ |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
379 path->received += len; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
380 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
381 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
8997
fab36e4abf83
QUIC: got rid of hash symbol in backup and logging.
Vladimir Homutov <vl@nginx.com>
parents:
8985
diff
changeset
|
382 "quic packet len:%O via sock seq:%L path seq:%uL", |
8985
da24a78720eb
QUIC: fixed handling of initial source connection id.
Vladimir Homutov <vl@nginx.com>
parents:
8972
diff
changeset
|
383 len, (int64_t) qsock->sid.seqnum, path->seqnum); |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
384 ngx_quic_path_dbg(c, "status", path); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
385 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
386 return NGX_OK; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
387 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
388 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
389 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
390 ngx_int_t |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
391 ngx_quic_free_path(ngx_connection_t *c, ngx_quic_path_t *path) |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
392 { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
393 ngx_quic_connection_t *qc; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
394 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
395 qc = ngx_quic_get_connection(c); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
396 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
397 ngx_queue_remove(&path->queue); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
398 ngx_queue_insert_head(&qc->free_paths, &path->queue); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
399 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
400 /* |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
401 * invalidate CID that is no longer usable for any other path; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
402 * this also requests new CIDs from client |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
403 */ |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
404 if (path->cid) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
405 if (ngx_quic_free_client_id(c, path->cid) != NGX_OK) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
406 return NGX_ERROR; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
407 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
408 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
409 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
410 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
8997
fab36e4abf83
QUIC: got rid of hash symbol in backup and logging.
Vladimir Homutov <vl@nginx.com>
parents:
8985
diff
changeset
|
411 "quic path seq:%uL addr:%V retired", |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
412 path->seqnum, &path->addr_text); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
413 |
8737
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
414 return NGX_OK; |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
415 } |
76f476ce4d31
QUIC: distinct files for connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
416 |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
417 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
418 static void |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
419 ngx_quic_set_connection_path(ngx_connection_t *c, ngx_quic_path_t *path) |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
420 { |
9015
a2fbae359828
QUIC: fixed indentation.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8997
diff
changeset
|
421 ngx_memcpy(c->sockaddr, path->sockaddr, path->socklen); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
422 c->socklen = path->socklen; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
423 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
424 if (c->addr_text.data) { |
9099
9462c514a653
QUIC: fixed addr_text after migration (ticket #2488).
Roman Arutyunyan <arut@nginx.com>
parents:
9098
diff
changeset
|
425 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, |
9462c514a653
QUIC: fixed addr_text after migration (ticket #2488).
Roman Arutyunyan <arut@nginx.com>
parents:
9098
diff
changeset
|
426 c->addr_text.data, |
9462c514a653
QUIC: fixed addr_text after migration (ticket #2488).
Roman Arutyunyan <arut@nginx.com>
parents:
9098
diff
changeset
|
427 c->listening->addr_text_max_len, 0); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
428 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
429 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
430 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
8997
fab36e4abf83
QUIC: got rid of hash symbol in backup and logging.
Vladimir Homutov <vl@nginx.com>
parents:
8985
diff
changeset
|
431 "quic send path set to seq:%uL addr:%V", |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
432 path->seqnum, &path->addr_text); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
433 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
434 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
435 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
436 ngx_int_t |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
437 ngx_quic_handle_migration(ngx_connection_t *c, ngx_quic_header_t *pkt) |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
438 { |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
439 ngx_quic_path_t *next, *bkp; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
440 ngx_quic_send_ctx_t *ctx; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
441 ngx_quic_connection_t *qc; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
442 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
443 /* got non-probing packet via non-active path */ |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
444 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
445 qc = ngx_quic_get_connection(c); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
446 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
447 ctx = ngx_quic_get_send_ctx(qc, pkt->level); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
448 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
449 /* |
8797
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
450 * RFC 9000, 9.3. Responding to Connection Migration |
4715f3e669f1
QUIC: updated specification references.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8778
diff
changeset
|
451 * |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
452 * An endpoint only changes the address to which it sends packets in |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
453 * response to the highest-numbered non-probing packet. |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
454 */ |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
455 if (pkt->pn != ctx->largest_pn) { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
456 return NGX_OK; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
457 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
458 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
459 next = pkt->path; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
460 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
461 /* |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
462 * RFC 9000, 9.3.3: |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
463 * |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
464 * In response to an apparent migration, endpoints MUST validate the |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
465 * previously active path using a PATH_CHALLENGE frame. |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
466 */ |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
467 if (pkt->rebound) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
468 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
469 /* NAT rebinding: client uses new path with old SID */ |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
470 if (ngx_quic_validate_path(c, qc->path) != NGX_OK) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
471 return NGX_ERROR; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
472 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
473 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
474 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
475 if (qc->path->validated) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
476 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
477 if (next->tag != NGX_QUIC_PATH_BACKUP) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
478 /* can delete backup path, if any */ |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
479 bkp = ngx_quic_get_path(c, NGX_QUIC_PATH_BACKUP); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
480 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
481 if (bkp && ngx_quic_free_path(c, bkp) != NGX_OK) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
482 return NGX_ERROR; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
483 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
484 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
485 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
486 qc->path->tag = NGX_QUIC_PATH_BACKUP; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
487 ngx_quic_path_dbg(c, "is now backup", qc->path); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
488 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
489 } else { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
490 if (ngx_quic_free_path(c, qc->path) != NGX_OK) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
491 return NGX_ERROR; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
492 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
493 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
494 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
495 /* switch active path to migrated */ |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
496 qc->path = next; |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
497 qc->path->tag = NGX_QUIC_PATH_ACTIVE; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
498 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
499 ngx_quic_set_connection_path(c, next); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
500 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
501 if (!next->validated && next->state != NGX_QUIC_PATH_VALIDATING) { |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
502 if (ngx_quic_validate_path(c, next) != NGX_OK) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
503 return NGX_ERROR; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
504 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
505 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
506 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
507 ngx_log_error(NGX_LOG_INFO, c->log, 0, |
8997
fab36e4abf83
QUIC: got rid of hash symbol in backup and logging.
Vladimir Homutov <vl@nginx.com>
parents:
8985
diff
changeset
|
508 "quic migrated to path seq:%uL addr:%V", |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
509 qc->path->seqnum, &qc->path->addr_text); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
510 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
511 ngx_quic_path_dbg(c, "is now active", qc->path); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
512 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
513 return NGX_OK; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
514 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
515 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
516 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
517 static ngx_int_t |
8944
b7284807b4fa
QUIC: refactored ngx_quic_validate_path().
Vladimir Homutov <vl@nginx.com>
parents:
8943
diff
changeset
|
518 ngx_quic_validate_path(ngx_connection_t *c, ngx_quic_path_t *path) |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
519 { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
520 ngx_msec_t pto; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
521 ngx_quic_send_ctx_t *ctx; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
522 ngx_quic_connection_t *qc; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
523 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
524 qc = ngx_quic_get_connection(c); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
525 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
526 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
8997
fab36e4abf83
QUIC: got rid of hash symbol in backup and logging.
Vladimir Homutov <vl@nginx.com>
parents:
8985
diff
changeset
|
527 "quic initiated validation of path seq:%uL", path->seqnum); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
528 |
9096
c6db94ec3841
QUIC: separated path validation retransmit backoff.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9029
diff
changeset
|
529 path->tries = 0; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
530 |
9189
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
531 if (RAND_bytes((u_char *) path->challenge, sizeof(path->challenge)) != 1) { |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
532 return NGX_ERROR; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
533 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
534 |
9154
f6b6f3dd7ca0
QUIC: ignore path validation socket error (ticket #2532).
Roman Arutyunyan <arut@nginx.com>
parents:
9147
diff
changeset
|
535 (void) ngx_quic_send_path_challenge(c, path); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
536 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
537 ctx = ngx_quic_get_send_ctx(qc, ssl_encryption_application); |
9097
a9fef6ca45a8
QUIC: lower bound path validation PTO.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9096
diff
changeset
|
538 pto = ngx_max(ngx_quic_pto(c, ctx), 1000); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
539 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
540 path->expires = ngx_current_msec + pto; |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
541 path->state = NGX_QUIC_PATH_VALIDATING; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
542 |
9098
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
543 ngx_quic_set_path_timer(c); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
544 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
545 return NGX_OK; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
546 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
547 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
548 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
549 static ngx_int_t |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
550 ngx_quic_send_path_challenge(ngx_connection_t *c, ngx_quic_path_t *path) |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
551 { |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
552 size_t min; |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
553 ngx_uint_t n; |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
554 ngx_quic_frame_t *frame; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
555 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
556 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
8997
fab36e4abf83
QUIC: got rid of hash symbol in backup and logging.
Vladimir Homutov <vl@nginx.com>
parents:
8985
diff
changeset
|
557 "quic path seq:%uL send path_challenge tries:%ui", |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
558 path->seqnum, path->tries); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
559 |
9189
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
560 for (n = 0; n < 2; n++) { |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
561 |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
562 frame = ngx_quic_alloc_frame(c); |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
563 if (frame == NULL) { |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
564 return NGX_ERROR; |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
565 } |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
566 |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
567 frame->level = ssl_encryption_application; |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
568 frame->type = NGX_QUIC_FT_PATH_CHALLENGE; |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
569 |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
570 ngx_memcpy(frame->u.path_challenge.data, path->challenge[n], 8); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
571 |
9189
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
572 /* |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
573 * RFC 9000, 8.2.1. Initiating Path Validation |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
574 * |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
575 * An endpoint MUST expand datagrams that contain a PATH_CHALLENGE frame |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
576 * to at least the smallest allowed maximum datagram size of 1200 bytes, |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
577 * unless the anti-amplification limit for the path does not permit |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
578 * sending a datagram of this size. |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
579 */ |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
580 |
9189
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
581 min = (ngx_quic_path_limit(c, path, 1200) < 1200) ? 0 : 1200; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
582 |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
583 if (ngx_quic_frame_sendto(c, frame, min, path) == NGX_ERROR) { |
9189
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
584 return NGX_ERROR; |
fcec773dd249
QUIC: avoid partial expansion of PATH_CHALLENGE/PATH_RESPONSE.
Roman Arutyunyan <arut@nginx.com>
parents:
9154
diff
changeset
|
585 } |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
586 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
587 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
588 return NGX_OK; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
589 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
590 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
591 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
592 void |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
593 ngx_quic_discover_path_mtu(ngx_connection_t *c, ngx_quic_path_t *path) |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
594 { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
595 ngx_quic_connection_t *qc; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
596 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
597 qc = ngx_quic_get_connection(c); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
598 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
599 if (path->max_mtu) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
600 if (path->max_mtu - path->mtu <= NGX_QUIC_PATH_MTU_PRECISION) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
601 path->state = NGX_QUIC_PATH_IDLE; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
602 ngx_quic_set_path_timer(c); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
603 return; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
604 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
605 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
606 path->mtud = (path->mtu + path->max_mtu) / 2; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
607 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
608 } else { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
609 path->mtud = path->mtu * 2; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
610 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
611 if (path->mtud >= qc->ctp.max_udp_payload_size) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
612 path->mtud = qc->ctp.max_udp_payload_size; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
613 path->max_mtu = qc->ctp.max_udp_payload_size; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
614 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
615 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
616 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
617 path->state = NGX_QUIC_PATH_WAITING; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
618 path->expires = ngx_current_msec + NGX_QUIC_PATH_MTU_DELAY; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
619 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
620 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
621 "quic path seq:%uL schedule mtu:%uz", |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
622 path->seqnum, path->mtud); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
623 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
624 ngx_quic_set_path_timer(c); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
625 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
626 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
627 |
9098
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
628 static void |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
629 ngx_quic_set_path_timer(ngx_connection_t *c) |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
630 { |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
631 ngx_msec_t now; |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
632 ngx_queue_t *q; |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
633 ngx_msec_int_t left, next; |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
634 ngx_quic_path_t *path; |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
635 ngx_quic_connection_t *qc; |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
636 |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
637 qc = ngx_quic_get_connection(c); |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
638 |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
639 now = ngx_current_msec; |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
640 next = -1; |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
641 |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
642 for (q = ngx_queue_head(&qc->paths); |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
643 q != ngx_queue_sentinel(&qc->paths); |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
644 q = ngx_queue_next(q)) |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
645 { |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
646 path = ngx_queue_data(q, ngx_quic_path_t, queue); |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
647 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
648 if (path->state == NGX_QUIC_PATH_IDLE) { |
9098
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
649 continue; |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
650 } |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
651 |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
652 left = path->expires - now; |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
653 left = ngx_max(left, 1); |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
654 |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
655 if (next == -1 || left < next) { |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
656 next = left; |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
657 } |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
658 } |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
659 |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
660 if (next != -1) { |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
661 ngx_add_timer(&qc->path_validation, next); |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
662 |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
663 } else if (qc->path_validation.timer_set) { |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
664 ngx_del_timer(&qc->path_validation); |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
665 } |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
666 } |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
667 |
d565cf69ff5d
QUIC: reschedule path validation on path insertion/removal.
Sergey Kandaurov <pluknet@nginx.com>
parents:
9097
diff
changeset
|
668 |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
669 void |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
670 ngx_quic_path_handler(ngx_event_t *ev) |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
671 { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
672 ngx_msec_t now; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
673 ngx_queue_t *q; |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
674 ngx_msec_int_t left; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
675 ngx_quic_path_t *path; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
676 ngx_connection_t *c; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
677 ngx_quic_connection_t *qc; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
678 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
679 c = ev->data; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
680 qc = ngx_quic_get_connection(c); |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
681 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
682 now = ngx_current_msec; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
683 |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
684 q = ngx_queue_head(&qc->paths); |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
685 |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
686 while (q != ngx_queue_sentinel(&qc->paths)) { |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
687 |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
688 path = ngx_queue_data(q, ngx_quic_path_t, queue); |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
689 q = ngx_queue_next(q); |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
690 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
691 if (path->state == NGX_QUIC_PATH_IDLE) { |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
692 continue; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
693 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
694 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
695 left = path->expires - now; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
696 |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
697 if (left > 0) { |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
698 continue; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
699 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
700 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
701 switch (path->state) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
702 case NGX_QUIC_PATH_VALIDATING: |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
703 if (ngx_quic_expire_path_validation(c, path) != NGX_OK) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
704 goto failed; |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
705 } |
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
706 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
707 break; |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
708 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
709 case NGX_QUIC_PATH_WAITING: |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
710 if (ngx_quic_expire_path_mtu_delay(c, path) != NGX_OK) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
711 goto failed; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
712 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
713 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
714 break; |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
715 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
716 case NGX_QUIC_PATH_MTUD: |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
717 if (ngx_quic_expire_path_mtu_discovery(c, path) != NGX_OK) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
718 goto failed; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
719 } |
8971
1e2f4e9c8195
QUIC: reworked migration handling.
Vladimir Homutov <vl@nginx.com>
parents:
8944
diff
changeset
|
720 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
721 break; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
722 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
723 default: |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
724 break; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
725 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
726 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
727 |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
728 ngx_quic_set_path_timer(c); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
729 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
730 return; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
731 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
732 failed: |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
733 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
734 ngx_quic_close_connection(c, NGX_ERROR); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
735 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
736 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
737 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
738 static ngx_int_t |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
739 ngx_quic_expire_path_validation(ngx_connection_t *c, ngx_quic_path_t *path) |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
740 { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
741 ngx_msec_int_t pto; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
742 ngx_quic_path_t *bkp; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
743 ngx_quic_send_ctx_t *ctx; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
744 ngx_quic_connection_t *qc; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
745 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
746 qc = ngx_quic_get_connection(c); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
747 ctx = ngx_quic_get_send_ctx(qc, ssl_encryption_application); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
748 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
749 if (++path->tries < NGX_QUIC_PATH_RETRIES) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
750 pto = ngx_max(ngx_quic_pto(c, ctx), 1000) << path->tries; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
751 path->expires = ngx_current_msec + pto; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
752 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
753 (void) ngx_quic_send_path_challenge(c, path); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
754 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
755 return NGX_OK; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
756 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
757 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
758 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
759 "quic path seq:%uL validation failed", path->seqnum); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
760 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
761 /* found expired path */ |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
762 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
763 path->validated = 0; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
764 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
765 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
766 /* RFC 9000, 9.3.2. On-Path Address Spoofing |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
767 * |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
768 * To protect the connection from failing due to such a spurious |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
769 * migration, an endpoint MUST revert to using the last validated |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
770 * peer address when validation of a new peer address fails. |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
771 */ |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
772 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
773 if (qc->path == path) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
774 /* active path validation failed */ |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
775 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
776 bkp = ngx_quic_get_path(c, NGX_QUIC_PATH_BACKUP); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
777 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
778 if (bkp == NULL) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
779 qc->error = NGX_QUIC_ERR_NO_VIABLE_PATH; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
780 qc->error_reason = "no viable path"; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
781 return NGX_ERROR; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
782 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
783 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
784 qc->path = bkp; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
785 qc->path->tag = NGX_QUIC_PATH_ACTIVE; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
786 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
787 ngx_quic_set_connection_path(c, qc->path); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
788 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
789 ngx_log_error(NGX_LOG_INFO, c->log, 0, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
790 "quic path seq:%uL addr:%V is restored from backup", |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
791 qc->path->seqnum, &qc->path->addr_text); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
792 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
793 ngx_quic_path_dbg(c, "is active", qc->path); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
794 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
795 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
796 return ngx_quic_free_path(c, path); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
797 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
798 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
799 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
800 static ngx_int_t |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
801 ngx_quic_expire_path_mtu_delay(ngx_connection_t *c, ngx_quic_path_t *path) |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
802 { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
803 ngx_int_t rc; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
804 ngx_uint_t i; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
805 ngx_msec_t pto; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
806 ngx_quic_send_ctx_t *ctx; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
807 ngx_quic_connection_t *qc; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
808 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
809 qc = ngx_quic_get_connection(c); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
810 ctx = ngx_quic_get_send_ctx(qc, ssl_encryption_application); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
811 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
812 path->tries = 0; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
813 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
814 for ( ;; ) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
815 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
816 for (i = 0; i < NGX_QUIC_PATH_RETRIES; i++) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
817 path->mtu_pnum[i] = NGX_QUIC_UNSET_PN; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
818 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
819 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
820 rc = ngx_quic_send_path_mtu_probe(c, path); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
821 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
822 if (rc == NGX_ERROR) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
823 return NGX_ERROR; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
824 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
825 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
826 if (rc == NGX_OK) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
827 pto = ngx_quic_pto(c, ctx); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
828 path->expires = ngx_current_msec + pto; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
829 path->state = NGX_QUIC_PATH_MTUD; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
830 return NGX_OK; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
831 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
832 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
833 /* rc == NGX_DECLINED */ |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
834 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
835 path->max_mtu = path->mtud; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
836 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
837 if (path->max_mtu - path->mtu <= NGX_QUIC_PATH_MTU_PRECISION) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
838 path->state = NGX_QUIC_PATH_IDLE; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
839 return NGX_OK; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
840 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
841 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
842 path->mtud = (path->mtu + path->max_mtu) / 2; |
8763
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
843 } |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8747
diff
changeset
|
844 } |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
845 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
846 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
847 static ngx_int_t |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
848 ngx_quic_expire_path_mtu_discovery(ngx_connection_t *c, ngx_quic_path_t *path) |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
849 { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
850 ngx_int_t rc; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
851 ngx_msec_int_t pto; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
852 ngx_quic_send_ctx_t *ctx; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
853 ngx_quic_connection_t *qc; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
854 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
855 qc = ngx_quic_get_connection(c); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
856 ctx = ngx_quic_get_send_ctx(qc, ssl_encryption_application); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
857 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
858 if (++path->tries < NGX_QUIC_PATH_RETRIES) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
859 rc = ngx_quic_send_path_mtu_probe(c, path); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
860 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
861 if (rc == NGX_ERROR) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
862 return NGX_ERROR; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
863 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
864 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
865 if (rc == NGX_OK) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
866 pto = ngx_quic_pto(c, ctx) << path->tries; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
867 path->expires = ngx_current_msec + pto; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
868 return NGX_OK; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
869 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
870 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
871 /* rc == NGX_DECLINED */ |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
872 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
873 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
874 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
875 "quic path seq:%uL expired mtu:%uz", |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
876 path->seqnum, path->mtud); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
877 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
878 path->max_mtu = path->mtud; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
879 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
880 ngx_quic_discover_path_mtu(c, path); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
881 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
882 return NGX_OK; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
883 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
884 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
885 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
886 static ngx_int_t |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
887 ngx_quic_send_path_mtu_probe(ngx_connection_t *c, ngx_quic_path_t *path) |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
888 { |
9190
3a67dd34b6cc
QUIC: fixed anti-amplification with explicit send.
Roman Arutyunyan <arut@nginx.com>
parents:
9189
diff
changeset
|
889 size_t mtu; |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
890 ngx_int_t rc; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
891 ngx_uint_t log_error; |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
892 ngx_quic_frame_t *frame; |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
893 ngx_quic_send_ctx_t *ctx; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
894 ngx_quic_connection_t *qc; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
895 |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
896 frame = ngx_quic_alloc_frame(c); |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
897 if (frame == NULL) { |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
898 return NGX_ERROR; |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
899 } |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
900 |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
901 frame->level = ssl_encryption_application; |
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
902 frame->type = NGX_QUIC_FT_PING; |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
903 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
904 qc = ngx_quic_get_connection(c); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
905 ctx = ngx_quic_get_send_ctx(qc, ssl_encryption_application); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
906 path->mtu_pnum[path->tries] = ctx->pnum; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
907 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
908 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
909 "quic path seq:%uL send probe " |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
910 "mtu:%uz pnum:%uL tries:%ui", |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
911 path->seqnum, path->mtud, ctx->pnum, path->tries); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
912 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
913 log_error = c->log_error; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
914 c->log_error = NGX_ERROR_IGNORE_EMSGSIZE; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
915 |
9190
3a67dd34b6cc
QUIC: fixed anti-amplification with explicit send.
Roman Arutyunyan <arut@nginx.com>
parents:
9189
diff
changeset
|
916 mtu = path->mtu; |
3a67dd34b6cc
QUIC: fixed anti-amplification with explicit send.
Roman Arutyunyan <arut@nginx.com>
parents:
9189
diff
changeset
|
917 path->mtu = path->mtud; |
3a67dd34b6cc
QUIC: fixed anti-amplification with explicit send.
Roman Arutyunyan <arut@nginx.com>
parents:
9189
diff
changeset
|
918 |
9192
efcdaa66df2e
QUIC: congestion control in ngx_quic_frame_sendto().
Roman Arutyunyan <arut@nginx.com>
parents:
9191
diff
changeset
|
919 rc = ngx_quic_frame_sendto(c, frame, path->mtud, path); |
9190
3a67dd34b6cc
QUIC: fixed anti-amplification with explicit send.
Roman Arutyunyan <arut@nginx.com>
parents:
9189
diff
changeset
|
920 |
3a67dd34b6cc
QUIC: fixed anti-amplification with explicit send.
Roman Arutyunyan <arut@nginx.com>
parents:
9189
diff
changeset
|
921 path->mtu = mtu; |
9147
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
922 c->log_error = log_error; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
923 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
924 if (rc == NGX_ERROR) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
925 if (c->write->error) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
926 c->write->error = 0; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
927 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
928 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
929 "quic path seq:%uL rejected mtu:%uz", |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
930 path->seqnum, path->mtud); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
931 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
932 return NGX_DECLINED; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
933 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
934 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
935 return NGX_ERROR; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
936 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
937 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
938 return NGX_OK; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
939 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
940 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
941 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
942 ngx_int_t |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
943 ngx_quic_handle_path_mtu(ngx_connection_t *c, ngx_quic_path_t *path, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
944 uint64_t min, uint64_t max) |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
945 { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
946 uint64_t pnum; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
947 ngx_uint_t i; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
948 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
949 if (path->state != NGX_QUIC_PATH_MTUD) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
950 return NGX_OK; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
951 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
952 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
953 for (i = 0; i < NGX_QUIC_PATH_RETRIES; i++) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
954 pnum = path->mtu_pnum[i]; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
955 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
956 if (pnum == NGX_QUIC_UNSET_PN) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
957 break; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
958 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
959 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
960 if (pnum < min || pnum > max) { |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
961 continue; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
962 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
963 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
964 path->mtu = path->mtud; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
965 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
966 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
967 "quic path seq:%uL ack mtu:%uz", |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
968 path->seqnum, path->mtu); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
969 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
970 ngx_quic_discover_path_mtu(c, path); |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
971 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
972 break; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
973 } |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
974 |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
975 return NGX_OK; |
58afcd72446f
QUIC: path MTU discovery.
Roman Arutyunyan <arut@nginx.com>
parents:
9146
diff
changeset
|
976 } |