From ee189f5c8111d001f5f8c1dfe8a313bfa4fae83f Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Wed, 17 Feb 2021 17:22:16 +0100
Subject: [PATCH] dnsdist: Remove redundant test in the TCP path

---
 pdns/dnsdist-tcp.cc | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/pdns/dnsdist-tcp.cc b/pdns/dnsdist-tcp.cc
index ae81bbe082..5be27acea1 100644
--- a/pdns/dnsdist-tcp.cc
+++ b/pdns/dnsdist-tcp.cc
@@ -912,15 +912,13 @@ void IncomingTCPConnectionState::handleIO(std::shared_ptr<IncomingTCPConnectionS
         if (!state->d_lastIOBlocked && state->active() && iostate == IOState::Done) {
           // if the query has been passed to a backend, or dropped, and the responses have been sent,
           // we can start reading again
-          if (!state->d_isXFR) {
-            if (state->canAcceptNewQueries(now)) {
-              state->resetForNewQuery();
-              iostate = IOState::NeedRead;
-            }
-            else {
-              state->d_state = IncomingTCPConnectionState::State::idle;
-              iostate = IOState::Done;
-            }
+          if (state->canAcceptNewQueries(now)) {
+            state->resetForNewQuery();
+            iostate = IOState::NeedRead;
+          }
+          else {
+            state->d_state = IncomingTCPConnectionState::State::idle;
+            iostate = IOState::Done;
           }
         }
       }
-- 
2.47.3