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comparison src/event/quic/ngx_event_quic_connid.c @ 8498:4715f3e669f1 quic

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QUIC: updated specification references. This includes updating citations and further clarification.
author Sergey Kandaurov <pluknet@nginx.com>
date Wed, 16 Jun 2021 11:55:12 +0300
parents 5186ee5a94b9
children e2ec952dc295
comparison
equal deleted inserted replaced
8497:1fec68e322d0 8498:4715f3e669f1
84 84
85 qc = ngx_quic_get_connection(c); 85 qc = ngx_quic_get_connection(c);
86 86
87 if (f->seqnum < qc->max_retired_seqnum) { 87 if (f->seqnum < qc->max_retired_seqnum) {
88 /* 88 /*
89 * RFC 9000, 19.15. NEW_CONNECTION_ID Frame
90 *
89 * An endpoint that receives a NEW_CONNECTION_ID frame with 91 * An endpoint that receives a NEW_CONNECTION_ID frame with
90 * a sequence number smaller than the Retire Prior To field 92 * a sequence number smaller than the Retire Prior To field
91 * of a previously received NEW_CONNECTION_ID frame MUST send 93 * of a previously received NEW_CONNECTION_ID frame MUST send
92 * a corresponding RETIRE_CONNECTION_ID frame that retires 94 * a corresponding RETIRE_CONNECTION_ID frame that retires
93 * the newly received connection ID, unless it has already 95 * the newly received connection ID, unless it has already
94 * done so for that sequence number. 96 * done so for that sequence number.
95 */ 97 */
96 98
97 if (ngx_quic_send_retire_connection_id(c, f->seqnum) != NGX_OK) { 99 if (ngx_quic_send_retire_connection_id(c, f->seqnum) != NGX_OK) {
98 return NGX_ERROR; 100 return NGX_ERROR;
115 } 117 }
116 } 118 }
117 119
118 if (cid) { 120 if (cid) {
119 /* 121 /*
120 * Transmission errors, timeouts and retransmissions might cause the 122 * Transmission errors, timeouts, and retransmissions might cause the
121 * same NEW_CONNECTION_ID frame to be received multiple times 123 * same NEW_CONNECTION_ID frame to be received multiple times.
122 */ 124 */
123 125
124 if (cid->len != f->len 126 if (cid->len != f->len
125 || ngx_strncmp(cid->id, f->cid, f->len) != 0 127 || ngx_strncmp(cid->id, f->cid, f->len) != 0
126 || ngx_strncmp(cid->sr_token, f->srt, NGX_QUIC_SR_TOKEN_LEN) != 0) 128 || ngx_strncmp(cid->sr_token, f->srt, NGX_QUIC_SR_TOKEN_LEN) != 0)
127 { 129 {
128 /* 130 /*
129 * ..a sequence number is used for different connection IDs, 131 * ..if a sequence number is used for different connection IDs,
130 * the endpoint MAY treat that receipt as a connection error 132 * the endpoint MAY treat that receipt as a connection error
131 * of type PROTOCOL_VIOLATION. 133 * of type PROTOCOL_VIOLATION.
132 */ 134 */
133 qc->error = NGX_QUIC_ERR_PROTOCOL_VIOLATION; 135 qc->error = NGX_QUIC_ERR_PROTOCOL_VIOLATION;
134 qc->error_reason = "seqnum refers to different connection id/token"; 136 qc->error_reason = "seqnum refers to different connection id/token";
188 190
189 done: 191 done:
190 192
191 if (qc->nclient_ids > qc->tp.active_connection_id_limit) { 193 if (qc->nclient_ids > qc->tp.active_connection_id_limit) {
192 /* 194 /*
195 * RFC 9000, 5.1.1. Issuing Connection IDs
196 *
193 * After processing a NEW_CONNECTION_ID frame and 197 * After processing a NEW_CONNECTION_ID frame and
194 * adding and retiring active connection IDs, if the number of active 198 * adding and retiring active connection IDs, if the number of active
195 * connection IDs exceeds the value advertised in its 199 * connection IDs exceeds the value advertised in its
196 * active_connection_id_limit transport parameter, an endpoint MUST 200 * active_connection_id_limit transport parameter, an endpoint MUST
197 * close the connection with an error of type CONNECTION_ID_LIMIT_ERROR. 201 * close the connection with an error of type CONNECTION_ID_LIMIT_ERROR.