ln: make 'to_self_delay' CSV configurable

needed for tests

electrum/lnpeer.py

@@ -40,7 +40,7 @@ from .lnutil import (Outpoint, LocalConfig, RECEIVED, UpdateAddHtlc,
                      LOCAL, REMOTE, HTLCOwner, generate_keypair, LnKeyFamily,
                      ln_compare_features, privkey_to_pubkey, MIN_FINAL_CLTV_EXPIRY_ACCEPTED,
                      LightningPeerConnectionClosed, HandshakeFailed, NotFoundChanAnnouncementForUpdate,
-                     RemoteMisbehaving, DEFAULT_TO_SELF_DELAY,
+                     RemoteMisbehaving,
                      NBLOCK_OUR_CLTV_EXPIRY_DELTA, format_short_channel_id, ShortChannelID,
                      IncompatibleLightningFeatures, derive_payment_secret_from_payment_preimage,
                      LN_MAX_FUNDING_SAT, calc_fees_for_commitment_tx)
@@ -503,7 +503,7 @@ class Peer(Logger):
         local_config = LocalConfig.from_seed(
             channel_seed=channel_seed,
             static_remotekey=static_remotekey,
-            to_self_delay=DEFAULT_TO_SELF_DELAY,
+            to_self_delay=self.network.config.get('lightning_to_self_delay', 7 * 144),
             dust_limit_sat=bitcoin.DUST_LIMIT_DEFAULT_SAT_LEGACY,
             max_htlc_value_in_flight_msat=funding_sat * 1000,
             max_accepted_htlcs=5,

electrum/lnutil.py

@@ -282,8 +282,6 @@ class NotFoundChanAnnouncementForUpdate(Exception): pass
 class PaymentFailure(UserFacingException): pass
 
 # TODO make some of these values configurable?
-DEFAULT_TO_SELF_DELAY = 7 * 144
-
 REDEEM_AFTER_DOUBLE_SPENT_DELAY = 30
 
 CHANNEL_OPENING_TIMEOUT = 24*60*60

electrum/tests/regtest/regtest.sh

@@ -79,9 +79,10 @@ if [[ $1 == "init" ]]; then
     $agent -o init_lightning
     $agent setconfig --offline log_to_file True
     $agent setconfig --offline server 127.0.0.1:51001:t
+    $agent setconfig --offline lightning_to_self_delay 144
     # alice is funded, bob is listening
     if [[ $2 == "bob" ]]; then
-	$bob setconfig --offline lightning_listen localhost:9735
+        $bob setconfig --offline lightning_listen localhost:9735
     else
         echo "funding $2"
         $bitcoin_cli sendtoaddress $($agent getunusedaddress -o) 1