onchain: get feerate min/max from master.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

lightningd/onchain_control.c

@@ -417,7 +417,8 @@ enum watch_result funding_spent(struct channel *channel,
 				  /* FIXME: config for 'reasonable depth' */
 				  3,
 				  channel->last_htlc_sigs,
-				  tal_count(stubs));
+				  tal_count(stubs),
+				  0, 250000);
 	subd_send_msg(channel->owner, take(msg));
 
 	/* FIXME: Don't queue all at once, use an empty cb... */

onchaind/onchain.c

@@ -34,7 +34,7 @@ static const struct keyset *keyset;
 static u32 feerate_per_kw;
 
 /* Min and max feerates we ever used */
-static u32 min_possible_feerate = 0, max_possible_feerate = 250000;
+static u32 min_possible_feerate, max_possible_feerate;
 
 /* The dust limit to use when we generate transactions. */
 static u64 dust_limit_satoshis;
@@ -2133,7 +2133,9 @@ int main(int argc, char *argv[])
 				   &tx_blockheight,
 				   &reasonable_depth,
 				   &remote_htlc_sigs,
-				   &num_htlcs)) {
+				   &num_htlcs,
+				   &min_possible_feerate,
+				   &max_possible_feerate)) {
 		master_badmsg(WIRE_ONCHAIN_INIT, msg);
 	}
 

onchaind/onchain_wire.csv

@@ -31,6 +31,8 @@ onchain_init,,reasonable_depth,u32
 onchain_init,,num_htlc_sigs,u16
 onchain_init,,htlc_signature,num_htlc_sigs*secp256k1_ecdsa_signature
 onchain_init,,num_htlcs,u64
+onchain_init,,min_possible_feerate,u32
+onchain_init,,max_possible_feerate,u32
 
 #include <onchaind/onchain_wire.h>
 # This is all the HTLCs: one per message