connectd: recover the chainparams

We are going to signal the genesis block hash in the init message.

Author: darosior

connectd/connect_wire.csv

@@ -4,6 +4,7 @@
 #include <lightningd/gossip_msg.h>
 
 msgtype,connectctl_init,2000
+msgdata,connectctl_init,chainparams,chainparams,
 msgdata,connectctl_init,id,node_id,
 msgdata,connectctl_init,num_wireaddrs,u16,
 msgdata,connectctl_init,wireaddrs,wireaddr_internal,num_wireaddrs

connectd/connectd.c

@@ -151,6 +151,9 @@ struct daemon {
 
 	/* Allow to define the default behavior of tot services calls*/
 	bool use_v3_autotor;
+
+	/* What network are we running on ? */
+	const struct chainparams *chainparams;
 };
 
 /* Peers we're trying to reach: we iterate through addrs until we succeed
@@ -1145,6 +1148,7 @@ static struct io_plan *connect_init(struct io_conn *conn,
 	/* Fields which require allocation are allocated off daemon */
 	if (!fromwire_connectctl_init(
 		daemon, msg,
+		&daemon->chainparams,
 		&daemon->id,
 		&proposed_wireaddr,
 		&proposed_listen_announce,