Mercurial > hg > nginx-quic
changeset 8509:5b0c229ba5fe quic
QUIC: fixed padding calculation.
Sometimes, QUIC packets need to be of certain (or minimal) size. This is
achieved by adding PADDING frames. It is possible, that adding padding will
affect header size, thus forcing us to recalculate padding size once more.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Mon, 05 Jul 2021 13:17:10 +0300 |
parents | 0ac25efb2da3 |
children | 6f434af59257 |
files | src/event/quic/ngx_event_quic_output.c |
diffstat | 1 files changed, 3 insertions(+), 0 deletions(-) [+] |
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--- a/src/event/quic/ngx_event_quic_output.c +++ b/src/event/quic/ngx_event_quic_output.c @@ -368,6 +368,9 @@ ngx_quic_output_packet(ngx_connection_t } if (out.len < pad_len) { + /* compensate for potentially enlarged header in Length bytes */ + pad_len -= ngx_quic_create_header(&pkt, NULL, pad_len, NULL) + - ngx_quic_create_header(&pkt, NULL, out.len, NULL); ngx_memset(p, NGX_QUIC_FT_PADDING, pad_len - out.len); out.len = pad_len; }