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comparison src/event/ngx_event_quic.c @ 8616:64405f970f6f quic

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QUIC: avoided retransmission of stale ack frames. Acknowledgments are regenerated using the most recent data available.
author Vladimir Homutov <vl@nginx.com>
date Wed, 28 Oct 2020 14:22:51 +0300
parents 27e305834078
children 69dc750cf66f
comparison
equal deleted inserted replaced
8615:27e305834078 8616:64405f970f6f
4841 start = ngx_queue_data(q, ngx_quic_frame_t, queue); 4841 start = ngx_queue_data(q, ngx_quic_frame_t, queue);
4842 4842
4843 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, 4843 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
4844 "quic resend packet pnum:%uL", start->pnum); 4844 "quic resend packet pnum:%uL", start->pnum);
4845 4845
4846 ngx_quic_congestion_lost(c, start);
4847
4846 do { 4848 do {
4847 f = ngx_queue_data(q, ngx_quic_frame_t, queue); 4849 f = ngx_queue_data(q, ngx_quic_frame_t, queue);
4848 4850
4849 if (f->pnum != start->pnum) { 4851 if (f->pnum != start->pnum) {
4850 break; 4852 break;
4851 } 4853 }
4852 4854
4853 q = ngx_queue_next(q); 4855 q = ngx_queue_next(q);
4854 4856
4855 ngx_queue_remove(&f->queue); 4857 ngx_queue_remove(&f->queue);
4856 ngx_queue_insert_tail(&ctx->frames, &f->queue); 4858
4859 switch (f->type) {
4860 case NGX_QUIC_FT_ACK:
4861 case NGX_QUIC_FT_ACK_ECN:
4862 /* force generation of most recent acknowledgment */
4863 ctx->send_ack = NGX_QUIC_MAX_ACK_GAP;
4864 ngx_quic_free_frame(c, f);
4865 break;
4866
4867 default:
4868 ngx_queue_insert_tail(&ctx->frames, &f->queue);
4869 }
4857 4870
4858 } while (q != ngx_queue_sentinel(&ctx->sent)); 4871 } while (q != ngx_queue_sentinel(&ctx->sent));
4859
4860 ngx_quic_congestion_lost(c, start);
4861 4872
4862 if (qc->closing) { 4873 if (qc->closing) {
4863 return; 4874 return;
4864 } 4875 }
4865 4876