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QUIC: cleanup send context properly.

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The patch resets ctx->frames queue, which may contain frames.  It was possible
that congestion or amplification limits prevented all frames to be sent.

Retransmitted frames could be accounted twice as inflight: first time in
ngx_quic_congestion_lost() called from ngx_quic_resend_frames(), and later
from ngx_quic_discard_ctx().
This commit is contained in:
Vladimir Homutov 2020-10-27 00:14:24 +03:00
parent a1473ce8b0
commit 68f7e9540a
1 changed files with 10 additions and 0 deletions
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10
src/event/ngx_event_quic.c
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@ -2254,6 +2254,15 @@ ngx_quic_discard_ctx(ngx_connection_t *c, enum ssl_encryption_level_t level)
ngx_quic_free_frame(c, f);
}
while (!ngx_queue_empty(&ctx->frames)) {
q = ngx_queue_head(&ctx->frames);
ngx_queue_remove(q);
f = ngx_queue_data(q, ngx_quic_frame_t, queue);
ngx_quic_congestion_ack(c, f);
ngx_quic_free_frame(c, f);
}
ctx->send_ack = 0;
}
@ -5677,6 +5686,7 @@ ngx_quic_congestion_lost(ngx_connection_t *c, ngx_quic_frame_t *f)
cg = &qc->congestion;
cg->in_flight -= f->plen;
f->plen = 0;
timer = f->last - cg->recovery_start;