From 4b2ceb8a48c3aeef4147e335b5f31bc2ed4aa6fb Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Mon, 4 Jul 2022 05:34:25 +0900
Subject: [PATCH] resolve: drop unnecessary else, and add short comment

---
 src/resolve/resolved-dns-transaction.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/resolve/resolved-dns-transaction.c b/src/resolve/resolved-dns-transaction.c
index 30429cd9b6..8dfad1dc7d 100644
--- a/src/resolve/resolved-dns-transaction.c
+++ b/src/resolve/resolved-dns-transaction.c
@@ -1568,11 +1568,12 @@ static usec_t transaction_get_resend_timeout(DnsTransaction *t) {
                 return DNS_TIMEOUT_USEC;
 
         case DNS_PROTOCOL_MDNS:
-                assert(t->n_attempts > 0);
                 if (t->probing)
                         return MDNS_PROBING_INTERVAL_USEC;
-                else
-                        return (1 << (t->n_attempts - 1)) * USEC_PER_SEC;
+
+                /* See RFC 6762 Section 5.1 suggests that timeout should be a few seconds. */
+                assert(t->n_attempts > 0);
+                return (1 << (t->n_attempts - 1)) * USEC_PER_SEC;
 
         case DNS_PROTOCOL_LLMNR:
                 return t->scope->resend_timeout;