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comparison src/event/ngx_event_quic_transport.c @ 8386:81f85c479d7e quic

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Discard packets without fixed bit or reserved bits set. Section 17.2 and 17.3 of QUIC transport: Fixed bit: Packets containing a zero value for this bit are not valid packets in this version and MUST be discarded. Reserved bit: An endpoint MUST treat receipt of a packet that has a non-zero value for these bits, after removing both packet and header protection, as a connection error of type PROTOCOL_VIOLATION.
author Vladimir Homutov <vl@nginx.com>
date Thu, 14 May 2020 01:06:45 +0300
parents fb7422074258
children eebdda507ec3
comparison
equal deleted inserted replaced
8385:fb7422074258 8386:81f85c479d7e
263 263
264 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, pkt->log, 0, 264 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, pkt->log, 0,
265 "quic long packet flags:%xi version:%xD", 265 "quic long packet flags:%xi version:%xD",
266 pkt->flags, pkt->version); 266 pkt->flags, pkt->version);
267 267
268 if (!(pkt->flags & NGX_QUIC_PKT_FIXED_BIT)) {
269 ngx_log_error(NGX_LOG_INFO, pkt->log, 0, "quic fixed bit is not set");
270 return NGX_DECLINED;
271 }
272
268 if (pkt->version != NGX_QUIC_VERSION) { 273 if (pkt->version != NGX_QUIC_VERSION) {
269 ngx_log_error(NGX_LOG_INFO, pkt->log, 0, 274 ngx_log_error(NGX_LOG_INFO, pkt->log, 0,
270 "quic unsupported version: 0x%xi", pkt->version); 275 "quic unsupported version: 0x%xi", pkt->version);
271 return NGX_ERROR; 276 return NGX_ERROR;
272 } 277 }
440 return NGX_ERROR; 445 return NGX_ERROR;
441 } 446 }
442 447
443 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, pkt->log, 0, 448 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, pkt->log, 0,
444 "quic short packet flags:%xi", pkt->flags); 449 "quic short packet flags:%xi", pkt->flags);
450
451 if (!(pkt->flags & NGX_QUIC_PKT_FIXED_BIT)) {
452 ngx_log_error(NGX_LOG_INFO, pkt->log, 0, "quic fixed bit is not set");
453 return NGX_DECLINED;
454 }
445 455
446 if (ngx_memcmp(p, dcid->data, dcid->len) != 0) { 456 if (ngx_memcmp(p, dcid->data, dcid->len) != 0) {
447 ngx_log_error(NGX_LOG_INFO, pkt->log, 0, "unexpected quic dcid"); 457 ngx_log_error(NGX_LOG_INFO, pkt->log, 0, "unexpected quic dcid");
448 return NGX_ERROR; 458 return NGX_ERROR;
449 } 459 }