# HG changeset patch
# User Sergey Kandaurov <pluknet@nginx.com>
# Date 1584144909 -10800
# Node ID 33feac1e57ac58578afbb3fa2f476c7597158263
# Parent  a5a1b3fad83485b70b4429cf442aa9f6c6148a2d
Fixed header protection application with pn length > 1.

diff -r a5a1b3fad834 -r 33feac1e57ac src/event/ngx_event_quic.c
--- a/src/event/ngx_event_quic.c	Fri Mar 13 20:44:32 2020 +0300
+++ b/src/event/ngx_event_quic.c	Sat Mar 14 03:15:09 2020 +0300
@@ -1637,7 +1637,10 @@
 
     ngx_memcpy(ad.data, pkt->data, ad.len);
     ad.data[0] = clearflags;
-    ad.data[ad.len - pnl] = (u_char) pn;
+
+    do {
+        ad.data[ad.len - pnl] = pn >> (8 * (pnl - 1)) % 256;
+    } while (--pnl);
 
     nonce = ngx_pstrdup(c->pool, &pkt->secret->iv);
     nonce[11] ^= pn;