From: Vladimir Homutov <vl@nginx.com>
Date: Tue, 30 Mar 2021 11:33:43 +0000 (+0300)
Subject: QUIC: fixed udp buffer initialization.
X-Git-Url: http://git.kaiwu.me/postgresql/log/contrib/postgres_fdw/postgres_fdw.c?a=commitdiff_plain;h=d9e4f8e28865e8cb801c6166e78bd6d94e3cccd6;p=nginx.git

QUIC: fixed udp buffer initialization.

The start field is used to check if the QUIC packet is first in the datagram.
This fixes stateless reset detection.
---

diff --git a/src/event/ngx_event_udp.c b/src/event/ngx_event_udp.c
index d0c766062..d6b11d0b6 100644
--- a/src/event/ngx_event_udp.c
+++ b/src/event/ngx_event_udp.c
@@ -279,6 +279,8 @@ ngx_event_recvmsg(ngx_event_t *ev)
 
             buf.pos = buffer;
             buf.last = buffer + n;
+            buf.start = buf.pos;
+            buf.end = buffer + sizeof(buffer);
 
             rev = c->read;