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QUIC: fixed congesion control in GSO mode.

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In non-GSO mode, a datagram is sent if congestion window is not exceeded by the
time of send.  The window could be exceeded by a small amount after the send.
In GSO mode, congestion window was checked in a similar way, but for all
concatenated datagrams as a whole.  This could result in exceeding congestion
window by a lot.  Now congestion window is checked for every datagram in GSO
mode as well.
This commit is contained in:
Roman Arutyunyan 2023-07-27 13:35:42 +04:00
parent 6f5f17358e
commit 968293d5e7
1 changed files with 1 additions and 1 deletions
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2
src/event/quic/ngx_event_quic_output.c
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@ -358,7 +358,7 @@ ngx_quic_create_segments(ngx_connection_t *c)
len = ngx_min(segsize, (size_t) (end - p)); len = ngx_min(segsize, (size_t) (end - p));
if (len && cg->in_flight < cg->window) { if (len && cg->in_flight + (p - dst) < cg->window) {
n = ngx_quic_output_packet(c, ctx, p, len, len); n = ngx_quic_output_packet(c, ctx, p, len, len);
if (n == NGX_ERROR) { if (n == NGX_ERROR) {