annotate src/event/quic/ngx_event_quic_socket.c @ 8997:fab36e4abf83 quic

QUIC: got rid of hash symbol in backup and logging. Now all objectes with sequence number (i.e. sockets, connection ids and paths) are logged as "foo seq:N".
author Vladimir Homutov <vl@nginx.com>
date Fri, 28 Jan 2022 14:57:33 +0300
parents 1e2f4e9c8195
children a2fbae359828
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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8763
4117aa7fa38e QUIC: connection migration.
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parents:
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1
4117aa7fa38e QUIC: connection migration.
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2 /*
4117aa7fa38e QUIC: connection migration.
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3 * Copyright (C) Nginx, Inc.
4117aa7fa38e QUIC: connection migration.
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4 */
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5
4117aa7fa38e QUIC: connection migration.
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6
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7 #include <ngx_config.h>
4117aa7fa38e QUIC: connection migration.
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10 #include <ngx_event_quic_connection.h>
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11
4117aa7fa38e QUIC: connection migration.
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12
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13 ngx_int_t
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14 ngx_quic_open_sockets(ngx_connection_t *c, ngx_quic_connection_t *qc,
4117aa7fa38e QUIC: connection migration.
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15 ngx_quic_header_t *pkt)
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16 {
8955
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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parents: 8940
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17 ngx_quic_socket_t *qsock, *tmp;
8763
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18 ngx_quic_client_id_t *cid;
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19
4117aa7fa38e QUIC: connection migration.
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20 /*
8971
1e2f4e9c8195 QUIC: reworked migration handling.
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21 * qc->path = NULL
1e2f4e9c8195 QUIC: reworked migration handling.
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22 *
8763
4117aa7fa38e QUIC: connection migration.
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23 * qc->nclient_ids = 0
4117aa7fa38e QUIC: connection migration.
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24 * qc->nsockets = 0
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25 * qc->max_retired_seqnum = 0
4117aa7fa38e QUIC: connection migration.
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26 * qc->client_seqnum = 0
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27 */
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28
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29 ngx_queue_init(&qc->sockets);
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30 ngx_queue_init(&qc->free_sockets);
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31
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32 ngx_queue_init(&qc->paths);
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33 ngx_queue_init(&qc->free_paths);
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34
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35 ngx_queue_init(&qc->client_ids);
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36 ngx_queue_init(&qc->free_client_ids);
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37
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38 qc->tp.original_dcid.len = pkt->odcid.len;
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39 qc->tp.original_dcid.data = ngx_pstrdup(c->pool, &pkt->odcid);
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40 if (qc->tp.original_dcid.data == NULL) {
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41 return NGX_ERROR;
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42 }
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43
8955
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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parents: 8940
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44 /* socket to use for further processing (id auto-generated) */
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45 qsock = ngx_quic_create_socket(c, qc);
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46 if (qsock == NULL) {
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47 return NGX_ERROR;
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48 }
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49
8955
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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50 /* socket is listening at new server id */
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51 if (ngx_quic_listen(c, qc, qsock) != NGX_OK) {
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52 return NGX_ERROR;
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53 }
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54
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1e2f4e9c8195 QUIC: reworked migration handling.
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55 qsock->used = 1;
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56
8763
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57 qc->tp.initial_scid.len = qsock->sid.len;
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58 qc->tp.initial_scid.data = ngx_pnalloc(c->pool, qsock->sid.len);
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59 if (qc->tp.initial_scid.data == NULL) {
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60 goto failed;
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61 }
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62 ngx_memcpy(qc->tp.initial_scid.data, qsock->sid.id, qsock->sid.len);
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63
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64 /* for all packets except first, this is set at udp layer */
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65 c->udp = &qsock->udp;
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66
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67 /* ngx_quic_get_connection(c) macro is now usable */
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68
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69 /* we have a client identified by scid */
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70 cid = ngx_quic_create_client_id(c, &pkt->scid, 0, NULL);
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71 if (cid == NULL) {
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72 goto failed;
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73 }
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74
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75 /* path of the first packet is our initial active path */
1e2f4e9c8195 QUIC: reworked migration handling.
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76 qc->path = ngx_quic_new_path(c, c->sockaddr, c->socklen, cid);
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77 if (qc->path == NULL) {
8763
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78 goto failed;
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79 }
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80
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81 qc->path->tag = NGX_QUIC_PATH_ACTIVE;
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82
8763
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83 if (pkt->validated) {
8971
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84 qc->path->validated = 1;
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85 qc->path->limited = 0;
8763
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86 }
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87
8971
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88 ngx_quic_path_dbg(c, "set active", qc->path);
8763
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89
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32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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90 tmp = ngx_pcalloc(c->pool, sizeof(ngx_quic_socket_t));
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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diff changeset
91 if (tmp == NULL) {
8763
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92 goto failed;
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
93 }
4117aa7fa38e QUIC: connection migration.
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94
8955
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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95 tmp->sid.seqnum = NGX_QUIC_UNSET_PN; /* temporary socket */
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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parents: 8940
diff changeset
96
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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parents: 8940
diff changeset
97 ngx_memcpy(tmp->sid.id, pkt->odcid.data, pkt->odcid.len);
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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parents: 8940
diff changeset
98 tmp->sid.len = pkt->odcid.len;
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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parents: 8940
diff changeset
99
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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diff changeset
100 if (ngx_quic_listen(c, qc, tmp) != NGX_OK) {
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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parents: 8940
diff changeset
101 goto failed;
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
Vladimir Homutov <vl@nginx.com>
parents: 8940
diff changeset
102 }
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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parents: 8940
diff changeset
103
8763
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diff changeset
104 return NGX_OK;
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
105
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parents:
diff changeset
106 failed:
4117aa7fa38e QUIC: connection migration.
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diff changeset
107
4117aa7fa38e QUIC: connection migration.
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diff changeset
108 ngx_rbtree_delete(&c->listening->rbtree, &qsock->udp.node);
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
109 c->udp = NULL;
4117aa7fa38e QUIC: connection migration.
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diff changeset
110
4117aa7fa38e QUIC: connection migration.
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111 return NGX_ERROR;
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
112 }
4117aa7fa38e QUIC: connection migration.
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parents:
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113
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parents:
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114
4117aa7fa38e QUIC: connection migration.
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diff changeset
115 ngx_quic_socket_t *
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32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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116 ngx_quic_create_socket(ngx_connection_t *c, ngx_quic_connection_t *qc)
8763
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117 {
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118 ngx_queue_t *q;
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119 ngx_quic_socket_t *sock;
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120
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parents:
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121 if (!ngx_queue_empty(&qc->free_sockets)) {
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parents:
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122
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123 q = ngx_queue_head(&qc->free_sockets);
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parents:
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124 sock = ngx_queue_data(q, ngx_quic_socket_t, queue);
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parents:
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125
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
126 ngx_queue_remove(&sock->queue);
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parents:
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127
4117aa7fa38e QUIC: connection migration.
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128 ngx_memzero(sock, sizeof(ngx_quic_socket_t));
4117aa7fa38e QUIC: connection migration.
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129
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130 } else {
4117aa7fa38e QUIC: connection migration.
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parents:
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131
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132 sock = ngx_pcalloc(c->pool, sizeof(ngx_quic_socket_t));
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parents:
diff changeset
133 if (sock == NULL) {
4117aa7fa38e QUIC: connection migration.
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parents:
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134 return NULL;
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
135 }
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
136 }
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
137
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32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
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parents: 8940
diff changeset
138 sock->sid.len = NGX_QUIC_SERVER_CID_LEN;
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
Vladimir Homutov <vl@nginx.com>
parents: 8940
diff changeset
139 if (ngx_quic_create_server_id(c, sock->sid.id) != NGX_OK) {
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
Vladimir Homutov <vl@nginx.com>
parents: 8940
diff changeset
140 return NULL;
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
Vladimir Homutov <vl@nginx.com>
parents: 8940
diff changeset
141 }
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
Vladimir Homutov <vl@nginx.com>
parents: 8940
diff changeset
142
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
Vladimir Homutov <vl@nginx.com>
parents: 8940
diff changeset
143 sock->sid.seqnum = qc->server_seqnum++;
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
Vladimir Homutov <vl@nginx.com>
parents: 8940
diff changeset
144
8763
4117aa7fa38e QUIC: connection migration.
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parents:
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145 return sock;
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
146 }
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
147
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parents:
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148
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Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
149 void
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parents:
diff changeset
150 ngx_quic_close_socket(ngx_connection_t *c, ngx_quic_socket_t *qsock)
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parents:
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151 {
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152 ngx_quic_connection_t *qc;
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153
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154 qc = ngx_quic_get_connection(c);
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155
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156 ngx_queue_remove(&qsock->queue);
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157 ngx_queue_insert_head(&qc->free_sockets, &qsock->queue);
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158
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diff changeset
159 ngx_rbtree_delete(&c->listening->rbtree, &qsock->udp.node);
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160 qc->nsockets--;
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161
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162 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: 8971
diff changeset
163 "quic socket seq:%L closed nsock:%ui",
8763
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164 (int64_t) qsock->sid.seqnum, qc->nsockets);
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165 }
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parents:
diff changeset
166
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parents:
diff changeset
167
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parents:
diff changeset
168 ngx_int_t
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169 ngx_quic_listen(ngx_connection_t *c, ngx_quic_connection_t *qc,
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170 ngx_quic_socket_t *qsock)
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171 {
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172 ngx_str_t id;
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173 ngx_quic_server_id_t *sid;
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174
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175 sid = &qsock->sid;
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176
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177 id.data = sid->id;
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178 id.len = sid->len;
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179
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180 ngx_insert_udp_connection(c, &qsock->udp, &id);
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181
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182 ngx_queue_insert_tail(&qc->sockets, &qsock->queue);
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183
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diff changeset
184 qc->nsockets++;
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185 qsock->quic = qc;
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186
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187 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
8997
fab36e4abf83 QUIC: got rid of hash symbol in backup and logging.
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parents: 8971
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188 "quic socket seq:%L listening at sid:%xV nsock:%ui",
8955
32daba3aabb2 QUIC: got rid of ngx_quic_create_temp_socket().
Vladimir Homutov <vl@nginx.com>
parents: 8940
diff changeset
189 (int64_t) sid->seqnum, &id, qc->nsockets);
8763
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190
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191 return NGX_OK;
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parents:
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192 }
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parents:
diff changeset
193
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parents:
diff changeset
194
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parents:
diff changeset
195 void
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parents:
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196 ngx_quic_close_sockets(ngx_connection_t *c)
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parents:
diff changeset
197 {
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diff changeset
198 ngx_queue_t *q;
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199 ngx_quic_socket_t *qsock;
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parents:
diff changeset
200 ngx_quic_connection_t *qc;
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
201
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parents:
diff changeset
202 qc = ngx_quic_get_connection(c);
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parents:
diff changeset
203
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parents:
diff changeset
204 while (!ngx_queue_empty(&qc->sockets)) {
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
205 q = ngx_queue_head(&qc->sockets);
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parents:
diff changeset
206 qsock = ngx_queue_data(q, ngx_quic_socket_t, queue);
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
207
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parents:
diff changeset
208 ngx_quic_close_socket(c, qsock);
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
209 }
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
210 }
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
211
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
212
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parents:
diff changeset
213 ngx_quic_socket_t *
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
214 ngx_quic_find_socket(ngx_connection_t *c, uint64_t seqnum)
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
215 {
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
216 ngx_queue_t *q;
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
217 ngx_quic_socket_t *qsock;
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
218 ngx_quic_connection_t *qc;
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
219
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parents:
diff changeset
220 qc = ngx_quic_get_connection(c);
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
221
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
222 for (q = ngx_queue_head(&qc->sockets);
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
223 q != ngx_queue_sentinel(&qc->sockets);
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
224 q = ngx_queue_next(q))
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
225 {
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
226 qsock = ngx_queue_data(q, ngx_quic_socket_t, queue);
4117aa7fa38e QUIC: connection migration.
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parents:
diff changeset
227
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
228 if (qsock->sid.seqnum == seqnum) {
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
229 return qsock;
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
230 }
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
231 }
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
232
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
233 return NULL;
4117aa7fa38e QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
234 }