From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Fri, 25 Apr 2025 14:54:23 +0000 (+0200)
Subject: dnsdist: Allow setting an unlimited number of TCP read IOs (`0`)
X-Git-Tag: dnsdist-2.0.0-alpha2~51^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5c5610bf59886b7a5d66a6e218aab2704ea44154;p=thirdparty%2Fpdns.git

dnsdist: Allow setting an unlimited number of TCP read IOs (`0`)
---

diff --git a/pdns/dnsdistdist/dnsdist-tcp.cc b/pdns/dnsdistdist/dnsdist-tcp.cc
index a172d1c11d..266b72477e 100644
--- a/pdns/dnsdistdist/dnsdist-tcp.cc
+++ b/pdns/dnsdistdist/dnsdist-tcp.cc
@@ -1212,7 +1212,7 @@ void IncomingTCPConnectionState::handleIO()
     }
 
     const auto& immutable = dnsdist::configuration::getImmutableConfiguration();
-    if (d_readIOsCurrentQuery >= immutable.d_maxTCPReadIOsPerQuery) {
+    if (immutable.d_maxTCPReadIOsPerQuery > 0 && d_readIOsCurrentQuery >= immutable.d_maxTCPReadIOsPerQuery) {
       vinfolog("Terminating TCP connection from %s for reaching the maximum number of read IO events per query (%d)", d_ci.remote.toStringWithPort(), immutable.d_maxTCPReadIOsPerQuery);
       dnsdist::IncomingConcurrentTCPConnectionsManager::banClientFor(d_ci.remote, time(nullptr), immutable.d_tcpBanDurationForExceedingMaxReadIOsPerQuery);
       return;