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changeset 9140:e9a003d40485

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QUIC: fixed congesion control in GSO mode. 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.
author Roman Arutyunyan <arut@nginx.com>
date Thu, 27 Jul 2023 13:35:42 +0400
parents d7dec2970161
children 5d1e7c74aadf
files src/event/quic/ngx_event_quic_output.c
diffstat 1 files changed, 1 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/src/event/quic/ngx_event_quic_output.c
+++ b/src/event/quic/ngx_event_quic_output.c
@@ -358,7 +358,7 @@ ngx_quic_create_segments(ngx_connection_
 
         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);
             if (n == NGX_ERROR) {