dnsdist: Gracefully handle no TLS session tickets allowed

Signed-off-by: Remi Gacogne <remi.gacogne@powerdns.com>

diff --git a/pdns/dnsdistdist/dnsdist-session-cache.cc b/pdns/dnsdistdist/dnsdist-session-cache.cc
index 264bc50ed8f42c3a0c134e5a339650350dbc7d0c..0e2bd3989937ea2bb6675cf174222e7a19d73c6a 100644 (file)
--- a/pdns/dnsdistdist/dnsdist-session-cache.cc
+++ b/pdns/dnsdistdist/dnsdist-session-cache.cc
@@ -50,6 +50,10 @@ void TLSSessionCache::putSessions(const boost::uuids::uuid& backendID, time_t no
   }
 
   const auto& runtimeConfig = dnsdist::configuration::getCurrentRuntimeConfiguration();
+  if (runtimeConfig.d_tlsSessionCacheMaxSessionsPerBackend == 0) {
+    return;
+  }
+
   for (auto& session : sessions) {
     auto& entry = data->d_sessions[backendID];
     if (entry.d_sessions.size() >= runtimeConfig.d_tlsSessionCacheMaxSessionsPerBackend) {