From: Michał Kępień <michal@isc.org>
Date: Mon, 25 May 2020 12:34:56 +0000 (+0200)
Subject: Improve the "hint" variable comment
X-Git-Tag: v9.17.2~60^2~2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=fb123df2b21b8e5d7f89d0ccf070a6536ef7425e;p=thirdparty%2Fbind9.git

Improve the "hint" variable comment

Replace an existing comment with a more verbose explanation of when the
"hint" variable is set in resquery_send() and how its value affects the
advertised UDP buffer size in outgoing queries.
---

diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c
index 99278a177ff..e97bc41b5dc 100644
--- a/lib/dns/resolver.c
+++ b/lib/dns/resolver.c
@@ -2643,7 +2643,12 @@ resquery_send(resquery_t *query) {
 			}
 
 			/*
-			 * We have talked to this server before.
+			 * This server timed out for the first time in this
+			 * fetch context and we received a response from it
+			 * before (either in this fetch context or in a
+			 * different one).  Set 'udpsize' to the size of the
+			 * largest UDP response we have received from this
+			 * server so far.
 			 */
 			if (hint != 0U) {
 				udpsize = hint;