Don't blacklist a server on a failed TCP read/write - only on UDP failure or TCP connect failure
Don't blacklist a server on a failed TCP read/write - only on UDP failure or TCP connect failure

Metaswitch/libmemcached-upstream,ClearwaterCore/libmemcached-upstream,Metaswitch/libmemcached-upstream,ClearwaterCore/libmemcached-upstream,ClearwaterCore/libmemcached-upstream,ClearwaterCore/libmemcached-upstream,Metaswitch/libmemcached-upstream,Metaswitch/libmemcached-upstream