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changeset 9009:e5f16d886c97 quic

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QUIC: optimized datagram expansion with half-RTT tickets. As shown in RFC 8446, section 2.2, Figure 3, and further specified in section 4.6.1, BoringSSL releases session tickets in Application Data (along with Finished) early, based on a precalculated client Finished transcript, once client signalled early data in extensions.
author Sergey Kandaurov <pluknet@nginx.com>
date Tue, 15 Feb 2022 14:12:34 +0300
parents ce6d9cf0f567
children a5aebd51e4c7
files src/event/quic/ngx_event_quic_output.c
diffstat 1 files changed, 7 insertions(+), 4 deletions(-) [+]
line wrap: on
line diff
--- a/src/event/quic/ngx_event_quic_output.c
+++ b/src/event/quic/ngx_event_quic_output.c
@@ -476,6 +476,7 @@ ngx_quic_send_segments(ngx_connection_t 
 static ngx_uint_t
 ngx_quic_get_padding_level(ngx_connection_t *c)
 {
+    ngx_uint_t              i;
     ngx_queue_t            *q;
     ngx_quic_frame_t       *f;
     ngx_quic_send_ctx_t    *ctx;
@@ -499,13 +500,15 @@ ngx_quic_get_padding_level(ngx_connectio
         f = ngx_queue_data(q, ngx_quic_frame_t, queue);
 
         if (f->need_ack) {
-            ctx = ngx_quic_get_send_ctx(qc, ssl_encryption_handshake);
+            for (i = 0; i + 1 < NGX_QUIC_SEND_CTX_LAST; i++) {
+                ctx = &qc->send_ctx[i + 1];
 
-            if (ngx_queue_empty(&ctx->frames)) {
-                return 0;
+                if (ngx_queue_empty(&ctx->frames)) {
+                    break;
+                }
             }
 
-            return 1;
+            return i;
         }
     }