gossip: Pass use_dns option down to gossipd

Signed-off-by: Christian Decker <decker.christian@gmail.com>

gossipd/gossip.c

@@ -170,6 +170,8 @@ struct daemon {
 	bool use_proxy_always;
 	char *tor_password;
 
+	/* @see lightningd.config.use_dns */
+	bool use_dns;
 };
 
 /* Peers we're trying to reach. */
@@ -2836,7 +2838,7 @@ static struct io_plan *gossip_init(struct daemon_conn *master,
 		&daemon->proposed_listen_announce, daemon->rgb,
 		daemon->alias, &update_channel_interval, &daemon->reconnect,
 		&proxyaddr, &daemon->use_proxy_always,
-		&dev_allow_localhost,
+		&dev_allow_localhost, &daemon->use_dns,
 		&daemon->tor_password)) {
 		master_badmsg(WIRE_GOSSIPCTL_INIT, msg);
 	}

gossipd/gossip_wire.csv

@@ -23,6 +23,7 @@ gossipctl_init,,num_tor_proxyaddrs,u16
 gossipctl_init,,tor_proxyaddr,num_tor_proxyaddrs*struct wireaddr
 gossipctl_init,,use_tor_proxy_always,bool
 gossipctl_init,,dev_allow_localhost,bool
+gossipctl_init,,use_dns,bool
 gossipctl_init,,tor_password,wirestring
 
 # Activate the gossip daemon, so others can connect.

lightningd/gossip_control.c

@@ -246,7 +246,7 @@ void gossip_init(struct lightningd *ld)
 	    listen_announce, ld->rgb,
 	    ld->alias, ld->config.channel_update_interval, ld->reconnect,
 	    ld->proxyaddr, ld->use_proxy_always || ld->pure_tor_setup,
-	    allow_localhost,
+	    allow_localhost, ld->config.use_dns,
 	    ld->tor_service_password ? ld->tor_service_password : "");
 	subd_send_msg(ld->gossip, msg);
 }