SO_KEEPALIVE       72 ext/mysqlnd/mysqlnd_net.c 	int result = setsockopt(socketd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int));
SO_KEEPALIVE      674 ext/sockets/sockets.c 	REGISTER_LONG_CONSTANT("SO_KEEPALIVE",	SO_KEEPALIVE,	CONST_CS | CONST_PERSISTENT);