_ Git - ldk-java/blob - c_sharp/src/org/ldk/structs/UtilMethods.cs

   1 using org.ldk.impl;
   2 using org.ldk.enums;
   3 using org.ldk.util;
   4 using org.ldk.structs;
   5 using System;
   6
   7 namespace org { namespace ldk { namespace util {
   8 public class UtilMethods {
   9         /**
  10          * Gets the 128-bit integer, as 16 little-endian bytes
  11          */
  12         public static byte[] U128_le_bytes(org.ldk.util.UInt128 val) {
  13                 byte[] ret = bindings.U128_le_bytes(val.getLEBytes());
  14                 GC.KeepAlive(val);
  15                 return ret;
  16         }
  17
  18         /**
  19          * Constructs a new U128 from 16 little-endian bytes
  20          */
  21         public static UInt128 U128_new(byte[] le_bytes) {
  22                 byte[] ret = bindings.U128_new(InternalUtils.check_arr_len(le_bytes, 16));
  23                 GC.KeepAlive(le_bytes);
  24                 org.ldk.util.UInt128 ret_conv = new org.ldk.util.UInt128(ret);
  25                 return ret_conv;
  26         }
  27
  28         /**
  29          * Constructs a new COption_NoneZ containing a
  30          */
  31         public static COption_NoneZ COption_NoneZ_some() {
  32                 COption_NoneZ ret = bindings.COption_NoneZ_some();
  33                 return ret;
  34         }
  35
  36         /**
  37          * Constructs a new COption_NoneZ containing nothing
  38          */
  39         public static COption_NoneZ COption_NoneZ_none() {
  40                 COption_NoneZ ret = bindings.COption_NoneZ_none();
  41                 return ret;
  42         }
  43
  44         /**
  45          * Read a ClosureReason from a byte array, created by ClosureReason_write
  46          */
  47         public static Result_COption_ClosureReasonZDecodeErrorZ ClosureReason_read(byte[] ser) {
  48                 long ret = bindings.ClosureReason_read(ser);
  49                 GC.KeepAlive(ser);
  50                 if (ret >= 0 && ret <= 4096) { return null; }
  51                 Result_COption_ClosureReasonZDecodeErrorZ ret_hu_conv = Result_COption_ClosureReasonZDecodeErrorZ.constr_from_ptr(ret);
  52                 return ret_hu_conv;
  53         }
  54
  55         /**
  56          * Read a HTLCDestination from a byte array, created by HTLCDestination_write
  57          */
  58         public static Result_COption_HTLCDestinationZDecodeErrorZ HTLCDestination_read(byte[] ser) {
  59                 long ret = bindings.HTLCDestination_read(ser);
  60                 GC.KeepAlive(ser);
  61                 if (ret >= 0 && ret <= 4096) { return null; }
  62                 Result_COption_HTLCDestinationZDecodeErrorZ ret_hu_conv = Result_COption_HTLCDestinationZDecodeErrorZ.constr_from_ptr(ret);
  63                 return ret_hu_conv;
  64         }
  65
  66         /**
  67          * Read a Event from a byte array, created by Event_write
  68          */
  69         public static Result_COption_EventZDecodeErrorZ Event_read(byte[] ser) {
  70                 long ret = bindings.Event_read(ser);
  71                 GC.KeepAlive(ser);
  72                 if (ret >= 0 && ret <= 4096) { return null; }
  73                 Result_COption_EventZDecodeErrorZ ret_hu_conv = Result_COption_EventZDecodeErrorZ.constr_from_ptr(ret);
  74                 return ret_hu_conv;
  75         }
  76
  77         /**
  78          * Creates a digital signature of a message given a SecretKey, like the node's secret.
  79          * A receiver knowing the PublicKey (e.g. the node's id) and the message can be sure that the signature was generated by the caller.
  80          * Signatures are EC recoverable, meaning that given the message and the signature the PublicKey of the signer can be extracted.
  81          */
  82         public static Result_StringErrorZ sign(byte[] msg, byte[] sk) {
  83                 long ret = bindings.sign(msg, InternalUtils.check_arr_len(sk, 32));
  84                 GC.KeepAlive(msg);
  85                 GC.KeepAlive(sk);
  86                 if (ret >= 0 && ret <= 4096) { return null; }
  87                 Result_StringErrorZ ret_hu_conv = Result_StringErrorZ.constr_from_ptr(ret);
  88                 return ret_hu_conv;
  89         }
  90
  91         /**
  92          * Recovers the PublicKey of the signer of the message given the message and the signature.
  93          */
  94         public static Result_PublicKeyErrorZ recover_pk(byte[] msg, string sig) {
  95                 long ret = bindings.recover_pk(msg, sig);
  96                 GC.KeepAlive(msg);
  97                 GC.KeepAlive(sig);
  98                 if (ret >= 0 && ret <= 4096) { return null; }
  99                 Result_PublicKeyErrorZ ret_hu_conv = Result_PublicKeyErrorZ.constr_from_ptr(ret);
 100                 return ret_hu_conv;
 101         }
 102
 103         /**
 104          * Verifies a message was signed by a PrivateKey that derives to a given PublicKey, given a message, a signature,
 105          * and the PublicKey.
 106          */
 107         public static bool verify(byte[] msg, string sig, byte[] pk) {
 108                 bool ret = bindings.verify(msg, sig, InternalUtils.check_arr_len(pk, 33));
 109                 GC.KeepAlive(msg);
 110                 GC.KeepAlive(sig);
 111                 GC.KeepAlive(pk);
 112                 return ret;
 113         }
 114
 115         /**
 116          * Construct the invoice's HRP and signatureless data into a preimage to be hashed.
 117          */
 118         public static byte[] construct_invoice_preimage(byte[] hrp_bytes, UInt5[] data_without_signature) {
 119                 byte[] ret = bindings.construct_invoice_preimage(hrp_bytes, data_without_signature != null ? InternalUtils.convUInt5Array(data_without_signature) : null);
 120                 GC.KeepAlive(hrp_bytes);
 121                 GC.KeepAlive(data_without_signature);
 122                 return ret;
 123         }
 124
 125         /**
 126          * Read a MonitorEvent from a byte array, created by MonitorEvent_write
 127          */
 128         public static Result_COption_MonitorEventZDecodeErrorZ MonitorEvent_read(byte[] ser) {
 129                 long ret = bindings.MonitorEvent_read(ser);
 130                 GC.KeepAlive(ser);
 131                 if (ret >= 0 && ret <= 4096) { return null; }
 132                 Result_COption_MonitorEventZDecodeErrorZ ret_hu_conv = Result_COption_MonitorEventZDecodeErrorZ.constr_from_ptr(ret);
 133                 return ret_hu_conv;
 134         }
 135
 136         /**
 137          * Read a C2Tuple_BlockHashChannelMonitorZ from a byte array, created by C2Tuple_BlockHashChannelMonitorZ_write
 138          */
 139         public static Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ C2Tuple_BlockHashChannelMonitorZ_read(byte[] ser, org.ldk.structs.KeysInterface arg) {
 140                 long ret = bindings.C2Tuple_BlockHashChannelMonitorZ_read(ser, arg == null ? 0 : arg.ptr);
 141                 GC.KeepAlive(ser);
 142                 GC.KeepAlive(arg);
 143                 if (ret >= 0 && ret <= 4096) { return null; }
 144                 Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ ret_hu_conv = Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.constr_from_ptr(ret);
 145                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(arg); };
 146                 return ret_hu_conv;
 147         }
 148
 149         /**
 150          * Fetches the set of [`NodeFeatures`] flags which are provided by or required by
 151          * [`ChannelManager`].
 152          */
 153         public static NodeFeatures provided_node_features() {
 154                 long ret = bindings.provided_node_features();
 155                 if (ret >= 0 && ret <= 4096) { return null; }
 156                 org.ldk.structs.NodeFeatures ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.NodeFeatures(null, ret); }
 157                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(ret_hu_conv); };
 158                 return ret_hu_conv;
 159         }
 160
 161         /**
 162          * Fetches the set of [`ChannelFeatures`] flags which are provided by or required by
 163          * [`ChannelManager`].
 164          */
 165         public static ChannelFeatures provided_channel_features() {
 166                 long ret = bindings.provided_channel_features();
 167                 if (ret >= 0 && ret <= 4096) { return null; }
 168                 org.ldk.structs.ChannelFeatures ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.ChannelFeatures(null, ret); }
 169                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(ret_hu_conv); };
 170                 return ret_hu_conv;
 171         }
 172
 173         /**
 174          * Fetches the set of [`InitFeatures`] flags which are provided by or required by
 175          * [`ChannelManager`].
 176          */
 177         public static InitFeatures provided_init_features() {
 178                 long ret = bindings.provided_init_features();
 179                 if (ret >= 0 && ret <= 4096) { return null; }
 180                 org.ldk.structs.InitFeatures ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.InitFeatures(null, ret); }
 181                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(ret_hu_conv); };
 182                 return ret_hu_conv;
 183         }
 184
 185         /**
 186          * Read a C2Tuple_BlockHashChannelManagerZ from a byte array, created by C2Tuple_BlockHashChannelManagerZ_write
 187          */
 188         public static Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ C2Tuple_BlockHashChannelManagerZ_read(byte[] ser, KeysInterface arg_keys_manager, FeeEstimator arg_fee_estimator, Watch arg_chain_monitor, BroadcasterInterface arg_tx_broadcaster, Logger arg_logger, UserConfig arg_default_config, ChannelMonitor[] arg_channel_monitors) {
 189                 long ret = bindings.C2Tuple_BlockHashChannelManagerZ_read(ser, bindings.ChannelManagerReadArgs_new(arg_keys_manager == null ? 0 : arg_keys_manager.ptr, arg_fee_estimator == null ? 0 : arg_fee_estimator.ptr, arg_chain_monitor == null ? 0 : arg_chain_monitor.ptr, arg_tx_broadcaster == null ? 0 : arg_tx_broadcaster.ptr, arg_logger == null ? 0 : arg_logger.ptr, arg_default_config == null ? 0 : arg_default_config.ptr, arg_channel_monitors != null ? InternalUtils.mapArray(arg_channel_monitors, arg_channel_monitors_conv_16 => arg_channel_monitors_conv_16 == null ? 0 : arg_channel_monitors_conv_16.ptr) : null));
 190                 GC.KeepAlive(ser);
 191                 GC.KeepAlive(arg_keys_manager);
 192                 GC.KeepAlive(arg_fee_estimator);
 193                 GC.KeepAlive(arg_chain_monitor);
 194                 GC.KeepAlive(arg_tx_broadcaster);
 195                 GC.KeepAlive(arg_logger);
 196                 GC.KeepAlive(arg_default_config);
 197                 GC.KeepAlive(arg_channel_monitors);
 198                 if (ret >= 0 && ret <= 4096) { return null; }
 199                 Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ ret_hu_conv = Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.constr_from_ptr(ret);
 200                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(arg_keys_manager); };
 201                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(arg_fee_estimator); };
 202                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(arg_chain_monitor); };
 203                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(arg_tx_broadcaster); };
 204                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(arg_logger); };
 205                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(arg_default_config); };
 206                 foreach (ChannelMonitor arg_channel_monitors_conv_16 in arg_channel_monitors) { if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(arg_channel_monitors_conv_16); }; };
 207                 return ret_hu_conv;
 208         }
 209
 210         /**
 211          * Equivalent to [`crate::ln::channelmanager::ChannelManager::create_inbound_payment`], but no
 212          * `ChannelManager` is required. Useful for generating invoices for [phantom node payments] without
 213          * a `ChannelManager`.
 214          *
 215          * `keys` is generated by calling [`KeysInterface::get_inbound_payment_key_material`] and then
 216          * calling [`ExpandedKey::new`] with its result. It is recommended to cache this value and not
 217          * regenerate it for each new inbound payment.
 218          *
 219          * `current_time` is a Unix timestamp representing the current time.
 220          *
 221          * [phantom node payments]: crate::chain::keysinterface::PhantomKeysManager
 222          */
 223         public static Result_C2Tuple_PaymentHashPaymentSecretZNoneZ create(org.ldk.structs.ExpandedKey keys, org.ldk.structs.Option_u64Z min_value_msat, int invoice_expiry_delta_secs, org.ldk.structs.KeysInterface keys_manager, long current_time) {
 224                 long ret = bindings.create(keys == null ? 0 : keys.ptr, min_value_msat.ptr, invoice_expiry_delta_secs, keys_manager == null ? 0 : keys_manager.ptr, current_time);
 225                 GC.KeepAlive(keys);
 226                 GC.KeepAlive(min_value_msat);
 227                 GC.KeepAlive(invoice_expiry_delta_secs);
 228                 GC.KeepAlive(keys_manager);
 229                 GC.KeepAlive(current_time);
 230                 if (ret >= 0 && ret <= 4096) { return null; }
 231                 Result_C2Tuple_PaymentHashPaymentSecretZNoneZ ret_hu_conv = Result_C2Tuple_PaymentHashPaymentSecretZNoneZ.constr_from_ptr(ret);
 232                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(keys); };
 233                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(keys_manager); };
 234                 return ret_hu_conv;
 235         }
 236
 237         /**
 238          * Equivalent to [`crate::ln::channelmanager::ChannelManager::create_inbound_payment_for_hash`],
 239          * but no `ChannelManager` is required. Useful for generating invoices for [phantom node payments]
 240          * without a `ChannelManager`.
 241          *
 242          * See [`create`] for information on the `keys` and `current_time` parameters.
 243          *
 244          * [phantom node payments]: crate::chain::keysinterface::PhantomKeysManager
 245          */
 246         public static Result_PaymentSecretNoneZ create_from_hash(org.ldk.structs.ExpandedKey keys, org.ldk.structs.Option_u64Z min_value_msat, byte[] payment_hash, int invoice_expiry_delta_secs, long current_time) {
 247                 long ret = bindings.create_from_hash(keys == null ? 0 : keys.ptr, min_value_msat.ptr, InternalUtils.check_arr_len(payment_hash, 32), invoice_expiry_delta_secs, current_time);
 248                 GC.KeepAlive(keys);
 249                 GC.KeepAlive(min_value_msat);
 250                 GC.KeepAlive(payment_hash);
 251                 GC.KeepAlive(invoice_expiry_delta_secs);
 252                 GC.KeepAlive(current_time);
 253                 if (ret >= 0 && ret <= 4096) { return null; }
 254                 Result_PaymentSecretNoneZ ret_hu_conv = Result_PaymentSecretNoneZ.constr_from_ptr(ret);
 255                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(keys); };
 256                 return ret_hu_conv;
 257         }
 258
 259         /**
 260          * Gets the weight for an HTLC-Success transaction.
 261          */
 262         public static long htlc_success_tx_weight(bool opt_anchors) {
 263                 long ret = bindings.htlc_success_tx_weight(opt_anchors);
 264                 GC.KeepAlive(opt_anchors);
 265                 return ret;
 266         }
 267
 268         /**
 269          * Gets the weight for an HTLC-Timeout transaction.
 270          */
 271         public static long htlc_timeout_tx_weight(bool opt_anchors) {
 272                 long ret = bindings.htlc_timeout_tx_weight(opt_anchors);
 273                 GC.KeepAlive(opt_anchors);
 274                 return ret;
 275         }
 276
 277         /**
 278          * Check if a given input witness attempts to claim a HTLC.
 279          */
 280         public static Option_HTLCClaimZ HTLCClaim_from_witness(byte[] witness) {
 281                 long ret = bindings.HTLCClaim_from_witness(witness);
 282                 GC.KeepAlive(witness);
 283                 if (ret >= 0 && ret <= 4096) { return null; }
 284                 org.ldk.structs.Option_HTLCClaimZ ret_hu_conv = org.ldk.structs.Option_HTLCClaimZ.constr_from_ptr(ret);
 285                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(ret_hu_conv); };
 286                 return ret_hu_conv;
 287         }
 288
 289         /**
 290          * Build the commitment secret from the seed and the commitment number
 291          */
 292         public static byte[] build_commitment_secret(byte[] commitment_seed, long idx) {
 293                 byte[] ret = bindings.build_commitment_secret(InternalUtils.check_arr_len(commitment_seed, 32), idx);
 294                 GC.KeepAlive(commitment_seed);
 295                 GC.KeepAlive(idx);
 296                 return ret;
 297         }
 298
 299         /**
 300          * Build a closing transaction
 301          */
 302         public static byte[] build_closing_transaction(long to_holder_value_sat, long to_counterparty_value_sat, byte[] to_holder_script, byte[] to_counterparty_script, org.ldk.structs.OutPoint funding_outpoint) {
 303                 byte[] ret = bindings.build_closing_transaction(to_holder_value_sat, to_counterparty_value_sat, to_holder_script, to_counterparty_script, funding_outpoint == null ? 0 : funding_outpoint.ptr);
 304                 GC.KeepAlive(to_holder_value_sat);
 305                 GC.KeepAlive(to_counterparty_value_sat);
 306                 GC.KeepAlive(to_holder_script);
 307                 GC.KeepAlive(to_counterparty_script);
 308                 GC.KeepAlive(funding_outpoint);
 309                 return ret;
 310         }
 311
 312         /**
 313          * Derives a per-commitment-transaction private key (eg an htlc key or delayed_payment key)
 314          * from the base secret and the per_commitment_point.
 315          */
 316         public static byte[] derive_private_key(byte[] per_commitment_point, byte[] base_secret) {
 317                 byte[] ret = bindings.derive_private_key(InternalUtils.check_arr_len(per_commitment_point, 33), InternalUtils.check_arr_len(base_secret, 32));
 318                 GC.KeepAlive(per_commitment_point);
 319                 GC.KeepAlive(base_secret);
 320                 return ret;
 321         }
 322
 323         /**
 324          * Derives a per-commitment-transaction public key (eg an htlc key or a delayed_payment key)
 325          * from the base point and the per_commitment_key. This is the public equivalent of
 326          * derive_private_key - using only public keys to derive a public key instead of private keys.
 327          */
 328         public static byte[] derive_public_key(byte[] per_commitment_point, byte[] base_point) {
 329                 byte[] ret = bindings.derive_public_key(InternalUtils.check_arr_len(per_commitment_point, 33), InternalUtils.check_arr_len(base_point, 33));
 330                 GC.KeepAlive(per_commitment_point);
 331                 GC.KeepAlive(base_point);
 332                 return ret;
 333         }
 334
 335         /**
 336          * Derives a per-commitment-transaction revocation key from its constituent parts.
 337          *
 338          * Only the cheating participant owns a valid witness to propagate a revoked
 339          * commitment transaction, thus per_commitment_secret always come from cheater
 340          * and revocation_base_secret always come from punisher, which is the broadcaster
 341          * of the transaction spending with this key knowledge.
 342          */
 343         public static byte[] derive_private_revocation_key(byte[] per_commitment_secret, byte[] countersignatory_revocation_base_secret) {
 344                 byte[] ret = bindings.derive_private_revocation_key(InternalUtils.check_arr_len(per_commitment_secret, 32), InternalUtils.check_arr_len(countersignatory_revocation_base_secret, 32));
 345                 GC.KeepAlive(per_commitment_secret);
 346                 GC.KeepAlive(countersignatory_revocation_base_secret);
 347                 return ret;
 348         }
 349
 350         /**
 351          * Derives a per-commitment-transaction revocation public key from its constituent parts. This is
 352          * the public equivalend of derive_private_revocation_key - using only public keys to derive a
 353          * public key instead of private keys.
 354          *
 355          * Only the cheating participant owns a valid witness to propagate a revoked
 356          * commitment transaction, thus per_commitment_point always come from cheater
 357          * and revocation_base_point always come from punisher, which is the broadcaster
 358          * of the transaction spending with this key knowledge.
 359          *
 360          * Note that this is infallible iff we trust that at least one of the two input keys are randomly
 361          * generated (ie our own).
 362          */
 363         public static byte[] derive_public_revocation_key(byte[] per_commitment_point, byte[] countersignatory_revocation_base_point) {
 364                 byte[] ret = bindings.derive_public_revocation_key(InternalUtils.check_arr_len(per_commitment_point, 33), InternalUtils.check_arr_len(countersignatory_revocation_base_point, 33));
 365                 GC.KeepAlive(per_commitment_point);
 366                 GC.KeepAlive(countersignatory_revocation_base_point);
 367                 return ret;
 368         }
 369
 370         /**
 371          * A script either spendable by the revocation
 372          * key or the broadcaster_delayed_payment_key and satisfying the relative-locktime OP_CSV constrain.
 373          * Encumbering a `to_holder` output on a commitment transaction or 2nd-stage HTLC transactions.
 374          */
 375         public static byte[] get_revokeable_redeemscript(byte[] revocation_key, short contest_delay, byte[] broadcaster_delayed_payment_key) {
 376                 byte[] ret = bindings.get_revokeable_redeemscript(InternalUtils.check_arr_len(revocation_key, 33), contest_delay, InternalUtils.check_arr_len(broadcaster_delayed_payment_key, 33));
 377                 GC.KeepAlive(revocation_key);
 378                 GC.KeepAlive(contest_delay);
 379                 GC.KeepAlive(broadcaster_delayed_payment_key);
 380                 return ret;
 381         }
 382
 383         /**
 384          * Gets the witness redeemscript for an HTLC output in a commitment transaction. Note that htlc
 385          * does not need to have its previous_output_index filled.
 386          */
 387         public static byte[] get_htlc_redeemscript(org.ldk.structs.HTLCOutputInCommitment htlc, bool opt_anchors, org.ldk.structs.TxCreationKeys keys) {
 388                 byte[] ret = bindings.get_htlc_redeemscript(htlc == null ? 0 : htlc.ptr, opt_anchors, keys == null ? 0 : keys.ptr);
 389                 GC.KeepAlive(htlc);
 390                 GC.KeepAlive(opt_anchors);
 391                 GC.KeepAlive(keys);
 392                 return ret;
 393         }
 394
 395         /**
 396          * Gets the redeemscript for a funding output from the two funding public keys.
 397          * Note that the order of funding public keys does not matter.
 398          */
 399         public static byte[] make_funding_redeemscript(byte[] broadcaster, byte[] countersignatory) {
 400                 byte[] ret = bindings.make_funding_redeemscript(InternalUtils.check_arr_len(broadcaster, 33), InternalUtils.check_arr_len(countersignatory, 33));
 401                 GC.KeepAlive(broadcaster);
 402                 GC.KeepAlive(countersignatory);
 403                 return ret;
 404         }
 405
 406         /**
 407          * Builds an unsigned HTLC-Success or HTLC-Timeout transaction from the given channel and HTLC
 408          * parameters. This is used by [`TrustedCommitmentTransaction::get_htlc_sigs`] to fetch the
 409          * transaction which needs signing, and can be used to construct an HTLC transaction which is
 410          * broadcastable given a counterparty HTLC signature.
 411          *
 412          * Panics if htlc.transaction_output_index.is_none() (as such HTLCs do not appear in the
 413          * commitment transaction).
 414          */
 415         public static byte[] build_htlc_transaction(byte[] commitment_txid, int feerate_per_kw, short contest_delay, org.ldk.structs.HTLCOutputInCommitment htlc, bool opt_anchors, bool use_non_zero_fee_anchors, byte[] broadcaster_delayed_payment_key, byte[] revocation_key) {
 416                 byte[] ret = bindings.build_htlc_transaction(InternalUtils.check_arr_len(commitment_txid, 32), feerate_per_kw, contest_delay, htlc == null ? 0 : htlc.ptr, opt_anchors, use_non_zero_fee_anchors, InternalUtils.check_arr_len(broadcaster_delayed_payment_key, 33), InternalUtils.check_arr_len(revocation_key, 33));
 417                 GC.KeepAlive(commitment_txid);
 418                 GC.KeepAlive(feerate_per_kw);
 419                 GC.KeepAlive(contest_delay);
 420                 GC.KeepAlive(htlc);
 421                 GC.KeepAlive(opt_anchors);
 422                 GC.KeepAlive(use_non_zero_fee_anchors);
 423                 GC.KeepAlive(broadcaster_delayed_payment_key);
 424                 GC.KeepAlive(revocation_key);
 425                 return ret;
 426         }
 427
 428         /**
 429          * Returns the witness required to satisfy and spend a HTLC input.
 430          *
 431          * Note that preimage (or a relevant inner pointer) may be NULL or all-0s to represent None
 432          */
 433         public static byte[] build_htlc_input_witness(byte[] local_sig, byte[] remote_sig, byte[] preimage, byte[] redeem_script, bool opt_anchors) {
 434                 byte[] ret = bindings.build_htlc_input_witness(InternalUtils.check_arr_len(local_sig, 64), InternalUtils.check_arr_len(remote_sig, 64), InternalUtils.check_arr_len(preimage, 32), redeem_script, opt_anchors);
 435                 GC.KeepAlive(local_sig);
 436                 GC.KeepAlive(remote_sig);
 437                 GC.KeepAlive(preimage);
 438                 GC.KeepAlive(redeem_script);
 439                 GC.KeepAlive(opt_anchors);
 440                 return ret;
 441         }
 442
 443         /**
 444          * Gets the witnessScript for the to_remote output when anchors are enabled.
 445          */
 446         public static byte[] get_to_countersignatory_with_anchors_redeemscript(byte[] payment_point) {
 447                 byte[] ret = bindings.get_to_countersignatory_with_anchors_redeemscript(InternalUtils.check_arr_len(payment_point, 33));
 448                 GC.KeepAlive(payment_point);
 449                 return ret;
 450         }
 451
 452         /**
 453          * Gets the witnessScript for an anchor output from the funding public key.
 454          * The witness in the spending input must be:
 455          * <BIP 143 funding_signature>
 456          * After 16 blocks of confirmation, an alternative satisfying witness could be:
 457          * <>
 458          * (empty vector required to satisfy compliance with MINIMALIF-standard rule)
 459          */
 460         public static byte[] get_anchor_redeemscript(byte[] funding_pubkey) {
 461                 byte[] ret = bindings.get_anchor_redeemscript(InternalUtils.check_arr_len(funding_pubkey, 33));
 462                 GC.KeepAlive(funding_pubkey);
 463                 return ret;
 464         }
 465
 466         /**
 467          * Returns the witness required to satisfy and spend an anchor input.
 468          */
 469         public static byte[] build_anchor_input_witness(byte[] funding_key, byte[] funding_sig) {
 470                 byte[] ret = bindings.build_anchor_input_witness(InternalUtils.check_arr_len(funding_key, 33), InternalUtils.check_arr_len(funding_sig, 64));
 471                 GC.KeepAlive(funding_key);
 472                 GC.KeepAlive(funding_sig);
 473                 return ret;
 474         }
 475
 476         /**
 477          * Commitment transaction numbers which appear in the transactions themselves are XOR'd with a
 478          * shared secret first. This prevents on-chain observers from discovering how many commitment
 479          * transactions occurred in a channel before it was closed.
 480          *
 481          * This function gets the shared secret from relevant channel public keys and can be used to
 482          * \"decrypt\" the commitment transaction number given a commitment transaction on-chain.
 483          */
 484         public static long get_commitment_transaction_number_obscure_factor(byte[] broadcaster_payment_basepoint, byte[] countersignatory_payment_basepoint, bool outbound_from_broadcaster) {
 485                 long ret = bindings.get_commitment_transaction_number_obscure_factor(InternalUtils.check_arr_len(broadcaster_payment_basepoint, 33), InternalUtils.check_arr_len(countersignatory_payment_basepoint, 33), outbound_from_broadcaster);
 486                 GC.KeepAlive(broadcaster_payment_basepoint);
 487                 GC.KeepAlive(countersignatory_payment_basepoint);
 488                 GC.KeepAlive(outbound_from_broadcaster);
 489                 return ret;
 490         }
 491
 492         /**
 493          * Read a NetworkUpdate from a byte array, created by NetworkUpdate_write
 494          */
 495         public static Result_COption_NetworkUpdateZDecodeErrorZ NetworkUpdate_read(byte[] ser) {
 496                 long ret = bindings.NetworkUpdate_read(ser);
 497                 GC.KeepAlive(ser);
 498                 if (ret >= 0 && ret <= 4096) { return null; }
 499                 Result_COption_NetworkUpdateZDecodeErrorZ ret_hu_conv = Result_COption_NetworkUpdateZDecodeErrorZ.constr_from_ptr(ret);
 500                 return ret_hu_conv;
 501         }
 502
 503         /**
 504          * Finds a route from us (payer) to the given target node (payee).
 505          *
 506          * If the payee provided features in their invoice, they should be provided via `params.payee`.
 507          * Without this, MPP will only be used if the payee's features are available in the network graph.
 508          *
 509          * Private routing paths between a public node and the target may be included in `params.payee`.
 510          *
 511          * If some channels aren't announced, it may be useful to fill in `first_hops` with the results
 512          * from [`ChannelManager::list_usable_channels`]. If it is filled in, the view of these channels
 513          * from `network_graph` will be ignored, and only those in `first_hops` will be used.
 514          *
 515          * The fees on channels from us to the next hop are ignored as they are assumed to all be equal.
 516          * However, the enabled/disabled bit on such channels as well as the `htlc_minimum_msat` /
 517          * `htlc_maximum_msat` *are* checked as they may change based on the receiving node.
 518          *
 519          * # Note
 520          *
 521          * May be used to re-compute a [`Route`] when handling a [`Event::PaymentPathFailed`]. Any
 522          * adjustments to the [`NetworkGraph`] and channel scores should be made prior to calling this
 523          * function.
 524          *
 525          * # Panics
 526          *
 527          * Panics if first_hops contains channels without short_channel_ids;
 528          * [`ChannelManager::list_usable_channels`] will never include such channels.
 529          *
 530          * [`ChannelManager::list_usable_channels`]: crate::ln::channelmanager::ChannelManager::list_usable_channels
 531          * [`Event::PaymentPathFailed`]: crate::util::events::Event::PaymentPathFailed
 532          * [`NetworkGraph`]: crate::routing::gossip::NetworkGraph
 533          *
 534          * Note that first_hops (or a relevant inner pointer) may be NULL or all-0s to represent None
 535          */
 536         public static Result_RouteLightningErrorZ find_route(byte[] our_node_pubkey, org.ldk.structs.RouteParameters route_params, org.ldk.structs.NetworkGraph network_graph, ChannelDetails[] first_hops, org.ldk.structs.Logger logger, org.ldk.structs.Score scorer, byte[] random_seed_bytes) {
 537                 long ret = bindings.find_route(InternalUtils.check_arr_len(our_node_pubkey, 33), route_params == null ? 0 : route_params.ptr, network_graph == null ? 0 : network_graph.ptr, first_hops != null ? InternalUtils.mapArray(first_hops, first_hops_conv_16 => first_hops_conv_16 == null ? 0 : first_hops_conv_16.ptr) : null, logger == null ? 0 : logger.ptr, scorer == null ? 0 : scorer.ptr, InternalUtils.check_arr_len(random_seed_bytes, 32));
 538                 GC.KeepAlive(our_node_pubkey);
 539                 GC.KeepAlive(route_params);
 540                 GC.KeepAlive(network_graph);
 541                 GC.KeepAlive(first_hops);
 542                 GC.KeepAlive(logger);
 543                 GC.KeepAlive(scorer);
 544                 GC.KeepAlive(random_seed_bytes);
 545                 if (ret >= 0 && ret <= 4096) { return null; }
 546                 Result_RouteLightningErrorZ ret_hu_conv = Result_RouteLightningErrorZ.constr_from_ptr(ret);
 547                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(route_params); };
 548                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(network_graph); };
 549                 if (first_hops != null) { foreach (ChannelDetails first_hops_conv_16 in first_hops) { if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(first_hops_conv_16); }; } };
 550                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(logger); };
 551                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(scorer); };
 552                 return ret_hu_conv;
 553         }
 554
 555         /**
 556          * Construct a route from us (payer) to the target node (payee) via the given hops (which should
 557          * exclude the payer, but include the payee). This may be useful, e.g., for probing the chosen path.
 558          *
 559          * Re-uses logic from `find_route`, so the restrictions described there also apply here.
 560          */
 561         public static Result_RouteLightningErrorZ build_route_from_hops(byte[] our_node_pubkey, byte[][] hops, org.ldk.structs.RouteParameters route_params, org.ldk.structs.NetworkGraph network_graph, org.ldk.structs.Logger logger, byte[] random_seed_bytes) {
 562                 long ret = bindings.build_route_from_hops(InternalUtils.check_arr_len(our_node_pubkey, 33), hops != null ? InternalUtils.mapArray(hops, hops_conv_8 => InternalUtils.check_arr_len(hops_conv_8, 33)) : null, route_params == null ? 0 : route_params.ptr, network_graph == null ? 0 : network_graph.ptr, logger == null ? 0 : logger.ptr, InternalUtils.check_arr_len(random_seed_bytes, 32));
 563                 GC.KeepAlive(our_node_pubkey);
 564                 GC.KeepAlive(hops);
 565                 GC.KeepAlive(route_params);
 566                 GC.KeepAlive(network_graph);
 567                 GC.KeepAlive(logger);
 568                 GC.KeepAlive(random_seed_bytes);
 569                 if (ret >= 0 && ret <= 4096) { return null; }
 570                 Result_RouteLightningErrorZ ret_hu_conv = Result_RouteLightningErrorZ.constr_from_ptr(ret);
 571                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(route_params); };
 572                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(network_graph); };
 573                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(logger); };
 574                 return ret_hu_conv;
 575         }
 576
 577         /**
 578          * Utility to create an invoice that can be paid to one of multiple nodes, or a \"phantom invoice.\"
 579          * See [`PhantomKeysManager`] for more information on phantom node payments.
 580          *
 581          * `phantom_route_hints` parameter:
 582          * Contains channel info for all nodes participating in the phantom invoice
 583          * Entries are retrieved from a call to [`ChannelManager::get_phantom_route_hints`] on each
 584          * participating node
 585          * It is fine to cache `phantom_route_hints` and reuse it across invoices, as long as the data is
 586          * updated when a channel becomes disabled or closes
 587          * Note that if too many channels are included in [`PhantomRouteHints::channels`], the invoice
 588          * may be too long for QR code scanning. To fix this, `PhantomRouteHints::channels` may be pared
 589          * down
 590          *
 591          * `payment_hash` can be specified if you have a specific need for a custom payment hash (see the difference
 592          * between [`ChannelManager::create_inbound_payment`] and [`ChannelManager::create_inbound_payment_for_hash`]).
 593          * If `None` is provided for `payment_hash`, then one will be created.
 594          *
 595          * `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
 596          * in excess of the current time.
 597          *
 598          * Note that the provided `keys_manager`'s `KeysInterface` implementation must support phantom
 599          * invoices in its `sign_invoice` implementation ([`PhantomKeysManager`] satisfies this
 600          * requirement).
 601          *
 602          * [`PhantomKeysManager`]: lightning::chain::keysinterface::PhantomKeysManager
 603          * [`ChannelManager::get_phantom_route_hints`]: lightning::ln::channelmanager::ChannelManager::get_phantom_route_hints
 604          * [`ChannelManager::create_inbound_payment`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment
 605          * [`ChannelManager::create_inbound_payment_for_hash`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment_for_hash
 606          * [`PhantomRouteHints::channels`]: lightning::ln::channelmanager::PhantomRouteHints::channels
 607          *
 608          * Note that payment_hash (or a relevant inner pointer) may be NULL or all-0s to represent None
 609          */
 610         public static Result_InvoiceSignOrCreationErrorZ create_phantom_invoice(org.ldk.structs.Option_u64Z amt_msat, byte[] payment_hash, string description, int invoice_expiry_delta_secs, PhantomRouteHints[] phantom_route_hints, org.ldk.structs.KeysInterface keys_manager, org.ldk.structs.Logger logger, Currency network) {
 611                 long ret = bindings.create_phantom_invoice(amt_msat.ptr, InternalUtils.check_arr_len(payment_hash, 32), description, invoice_expiry_delta_secs, phantom_route_hints != null ? InternalUtils.mapArray(phantom_route_hints, phantom_route_hints_conv_19 => phantom_route_hints_conv_19 == null ? 0 : phantom_route_hints_conv_19.ptr) : null, keys_manager == null ? 0 : keys_manager.ptr, logger == null ? 0 : logger.ptr, network);
 612                 GC.KeepAlive(amt_msat);
 613                 GC.KeepAlive(payment_hash);
 614                 GC.KeepAlive(description);
 615                 GC.KeepAlive(invoice_expiry_delta_secs);
 616                 GC.KeepAlive(phantom_route_hints);
 617                 GC.KeepAlive(keys_manager);
 618                 GC.KeepAlive(logger);
 619                 GC.KeepAlive(network);
 620                 if (ret >= 0 && ret <= 4096) { return null; }
 621                 Result_InvoiceSignOrCreationErrorZ ret_hu_conv = Result_InvoiceSignOrCreationErrorZ.constr_from_ptr(ret);
 622                 foreach (PhantomRouteHints phantom_route_hints_conv_19 in phantom_route_hints) { if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(phantom_route_hints_conv_19); }; };
 623                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(keys_manager); };
 624                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(logger); };
 625                 return ret_hu_conv;
 626         }
 627
 628         /**
 629          * Utility to create an invoice that can be paid to one of multiple nodes, or a \"phantom invoice.\"
 630          * See [`PhantomKeysManager`] for more information on phantom node payments.
 631          *
 632          * `phantom_route_hints` parameter:
 633          * Contains channel info for all nodes participating in the phantom invoice
 634          * Entries are retrieved from a call to [`ChannelManager::get_phantom_route_hints`] on each
 635          * participating node
 636          * It is fine to cache `phantom_route_hints` and reuse it across invoices, as long as the data is
 637          * updated when a channel becomes disabled or closes
 638          * Note that if too many channels are included in [`PhantomRouteHints::channels`], the invoice
 639          * may be too long for QR code scanning. To fix this, `PhantomRouteHints::channels` may be pared
 640          * down
 641          *
 642          * `description_hash` is a SHA-256 hash of the description text
 643          *
 644          * `payment_hash` can be specified if you have a specific need for a custom payment hash (see the difference
 645          * between [`ChannelManager::create_inbound_payment`] and [`ChannelManager::create_inbound_payment_for_hash`]).
 646          * If `None` is provided for `payment_hash`, then one will be created.
 647          *
 648          * `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
 649          * in excess of the current time.
 650          *
 651          * Note that the provided `keys_manager`'s `KeysInterface` implementation must support phantom
 652          * invoices in its `sign_invoice` implementation ([`PhantomKeysManager`] satisfies this
 653          * requirement).
 654          *
 655          * [`PhantomKeysManager`]: lightning::chain::keysinterface::PhantomKeysManager
 656          * [`ChannelManager::get_phantom_route_hints`]: lightning::ln::channelmanager::ChannelManager::get_phantom_route_hints
 657          * [`ChannelManager::create_inbound_payment`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment
 658          * [`ChannelManager::create_inbound_payment_for_hash`]: lightning::ln::channelmanager::ChannelManager::create_inbound_payment_for_hash
 659          * [`PhantomRouteHints::channels`]: lightning::ln::channelmanager::PhantomRouteHints::channels
 660          *
 661          * Note that payment_hash (or a relevant inner pointer) may be NULL or all-0s to represent None
 662          */
 663         public static Result_InvoiceSignOrCreationErrorZ create_phantom_invoice_with_description_hash(org.ldk.structs.Option_u64Z amt_msat, byte[] payment_hash, int invoice_expiry_delta_secs, org.ldk.structs.Sha256 description_hash, PhantomRouteHints[] phantom_route_hints, org.ldk.structs.KeysInterface keys_manager, org.ldk.structs.Logger logger, Currency network) {
 664                 long ret = bindings.create_phantom_invoice_with_description_hash(amt_msat.ptr, InternalUtils.check_arr_len(payment_hash, 32), invoice_expiry_delta_secs, description_hash == null ? 0 : description_hash.ptr, phantom_route_hints != null ? InternalUtils.mapArray(phantom_route_hints, phantom_route_hints_conv_19 => phantom_route_hints_conv_19 == null ? 0 : phantom_route_hints_conv_19.ptr) : null, keys_manager == null ? 0 : keys_manager.ptr, logger == null ? 0 : logger.ptr, network);
 665                 GC.KeepAlive(amt_msat);
 666                 GC.KeepAlive(payment_hash);
 667                 GC.KeepAlive(invoice_expiry_delta_secs);
 668                 GC.KeepAlive(description_hash);
 669                 GC.KeepAlive(phantom_route_hints);
 670                 GC.KeepAlive(keys_manager);
 671                 GC.KeepAlive(logger);
 672                 GC.KeepAlive(network);
 673                 if (ret >= 0 && ret <= 4096) { return null; }
 674                 Result_InvoiceSignOrCreationErrorZ ret_hu_conv = Result_InvoiceSignOrCreationErrorZ.constr_from_ptr(ret);
 675                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(description_hash); };
 676                 foreach (PhantomRouteHints phantom_route_hints_conv_19 in phantom_route_hints) { if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(phantom_route_hints_conv_19); }; };
 677                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(keys_manager); };
 678                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(logger); };
 679                 return ret_hu_conv;
 680         }
 681
 682         /**
 683          * Utility to construct an invoice. Generally, unless you want to do something like a custom
 684          * cltv_expiry, this is what you should be using to create an invoice. The reason being, this
 685          * method stores the invoice's payment secret and preimage in `ChannelManager`, so (a) the user
 686          * doesn't have to store preimage/payment secret information and (b) `ChannelManager` can verify
 687          * that the payment secret is valid when the invoice is paid.
 688          *
 689          * `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
 690          * in excess of the current time.
 691          */
 692         public static Result_InvoiceSignOrCreationErrorZ create_invoice_from_channelmanager(org.ldk.structs.ChannelManager channelmanager, org.ldk.structs.KeysInterface keys_manager, org.ldk.structs.Logger logger, Currency network, org.ldk.structs.Option_u64Z amt_msat, string description, int invoice_expiry_delta_secs) {
 693                 long ret = bindings.create_invoice_from_channelmanager(channelmanager == null ? 0 : channelmanager.ptr, keys_manager == null ? 0 : keys_manager.ptr, logger == null ? 0 : logger.ptr, network, amt_msat.ptr, description, invoice_expiry_delta_secs);
 694                 GC.KeepAlive(channelmanager);
 695                 GC.KeepAlive(keys_manager);
 696                 GC.KeepAlive(logger);
 697                 GC.KeepAlive(network);
 698                 GC.KeepAlive(amt_msat);
 699                 GC.KeepAlive(description);
 700                 GC.KeepAlive(invoice_expiry_delta_secs);
 701                 if (ret >= 0 && ret <= 4096) { return null; }
 702                 Result_InvoiceSignOrCreationErrorZ ret_hu_conv = Result_InvoiceSignOrCreationErrorZ.constr_from_ptr(ret);
 703                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(channelmanager); };
 704                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(keys_manager); };
 705                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(logger); };
 706                 return ret_hu_conv;
 707         }
 708
 709         /**
 710          * Utility to construct an invoice. Generally, unless you want to do something like a custom
 711          * cltv_expiry, this is what you should be using to create an invoice. The reason being, this
 712          * method stores the invoice's payment secret and preimage in `ChannelManager`, so (a) the user
 713          * doesn't have to store preimage/payment secret information and (b) `ChannelManager` can verify
 714          * that the payment secret is valid when the invoice is paid.
 715          * Use this variant if you want to pass the `description_hash` to the invoice.
 716          *
 717          * `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
 718          * in excess of the current time.
 719          */
 720         public static Result_InvoiceSignOrCreationErrorZ create_invoice_from_channelmanager_with_description_hash(org.ldk.structs.ChannelManager channelmanager, org.ldk.structs.KeysInterface keys_manager, org.ldk.structs.Logger logger, Currency network, org.ldk.structs.Option_u64Z amt_msat, org.ldk.structs.Sha256 description_hash, int invoice_expiry_delta_secs) {
 721                 long ret = bindings.create_invoice_from_channelmanager_with_description_hash(channelmanager == null ? 0 : channelmanager.ptr, keys_manager == null ? 0 : keys_manager.ptr, logger == null ? 0 : logger.ptr, network, amt_msat.ptr, description_hash == null ? 0 : description_hash.ptr, invoice_expiry_delta_secs);
 722                 GC.KeepAlive(channelmanager);
 723                 GC.KeepAlive(keys_manager);
 724                 GC.KeepAlive(logger);
 725                 GC.KeepAlive(network);
 726                 GC.KeepAlive(amt_msat);
 727                 GC.KeepAlive(description_hash);
 728                 GC.KeepAlive(invoice_expiry_delta_secs);
 729                 if (ret >= 0 && ret <= 4096) { return null; }
 730                 Result_InvoiceSignOrCreationErrorZ ret_hu_conv = Result_InvoiceSignOrCreationErrorZ.constr_from_ptr(ret);
 731                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(channelmanager); };
 732                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(keys_manager); };
 733                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(logger); };
 734                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(description_hash); };
 735                 return ret_hu_conv;
 736         }
 737
 738         /**
 739          * See [`create_invoice_from_channelmanager_with_description_hash`]
 740          * This version can be used in a `no_std` environment, where [`std::time::SystemTime`] is not
 741          * available and the current time is supplied by the caller.
 742          */
 743         public static Result_InvoiceSignOrCreationErrorZ create_invoice_from_channelmanager_with_description_hash_and_duration_since_epoch(org.ldk.structs.ChannelManager channelmanager, org.ldk.structs.KeysInterface keys_manager, org.ldk.structs.Logger logger, Currency network, org.ldk.structs.Option_u64Z amt_msat, org.ldk.structs.Sha256 description_hash, long duration_since_epoch, int invoice_expiry_delta_secs) {
 744                 long ret = bindings.create_invoice_from_channelmanager_with_description_hash_and_duration_since_epoch(channelmanager == null ? 0 : channelmanager.ptr, keys_manager == null ? 0 : keys_manager.ptr, logger == null ? 0 : logger.ptr, network, amt_msat.ptr, description_hash == null ? 0 : description_hash.ptr, duration_since_epoch, invoice_expiry_delta_secs);
 745                 GC.KeepAlive(channelmanager);
 746                 GC.KeepAlive(keys_manager);
 747                 GC.KeepAlive(logger);
 748                 GC.KeepAlive(network);
 749                 GC.KeepAlive(amt_msat);
 750                 GC.KeepAlive(description_hash);
 751                 GC.KeepAlive(duration_since_epoch);
 752                 GC.KeepAlive(invoice_expiry_delta_secs);
 753                 if (ret >= 0 && ret <= 4096) { return null; }
 754                 Result_InvoiceSignOrCreationErrorZ ret_hu_conv = Result_InvoiceSignOrCreationErrorZ.constr_from_ptr(ret);
 755                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(channelmanager); };
 756                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(keys_manager); };
 757                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(logger); };
 758                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(description_hash); };
 759                 return ret_hu_conv;
 760         }
 761
 762         /**
 763          * See [`create_invoice_from_channelmanager`]
 764          * This version can be used in a `no_std` environment, where [`std::time::SystemTime`] is not
 765          * available and the current time is supplied by the caller.
 766          */
 767         public static Result_InvoiceSignOrCreationErrorZ create_invoice_from_channelmanager_and_duration_since_epoch(org.ldk.structs.ChannelManager channelmanager, org.ldk.structs.KeysInterface keys_manager, org.ldk.structs.Logger logger, Currency network, org.ldk.structs.Option_u64Z amt_msat, string description, long duration_since_epoch, int invoice_expiry_delta_secs) {
 768                 long ret = bindings.create_invoice_from_channelmanager_and_duration_since_epoch(channelmanager == null ? 0 : channelmanager.ptr, keys_manager == null ? 0 : keys_manager.ptr, logger == null ? 0 : logger.ptr, network, amt_msat.ptr, description, duration_since_epoch, invoice_expiry_delta_secs);
 769                 GC.KeepAlive(channelmanager);
 770                 GC.KeepAlive(keys_manager);
 771                 GC.KeepAlive(logger);
 772                 GC.KeepAlive(network);
 773                 GC.KeepAlive(amt_msat);
 774                 GC.KeepAlive(description);
 775                 GC.KeepAlive(duration_since_epoch);
 776                 GC.KeepAlive(invoice_expiry_delta_secs);
 777                 if (ret >= 0 && ret <= 4096) { return null; }
 778                 Result_InvoiceSignOrCreationErrorZ ret_hu_conv = Result_InvoiceSignOrCreationErrorZ.constr_from_ptr(ret);
 779                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(channelmanager); };
 780                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(keys_manager); };
 781                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(logger); };
 782                 return ret_hu_conv;
 783         }
 784
 785         /**
 786          * See [`create_invoice_from_channelmanager_and_duration_since_epoch`]
 787          * This version allows for providing a custom [`PaymentHash`] for the invoice.
 788          * This may be useful if you're building an on-chain swap or involving another protocol where
 789          * the payment hash is also involved outside the scope of lightning.
 790          */
 791         public static Result_InvoiceSignOrCreationErrorZ create_invoice_from_channelmanager_and_duration_since_epoch_with_payment_hash(org.ldk.structs.ChannelManager channelmanager, org.ldk.structs.KeysInterface keys_manager, org.ldk.structs.Logger logger, Currency network, org.ldk.structs.Option_u64Z amt_msat, string description, long duration_since_epoch, int invoice_expiry_delta_secs, byte[] payment_hash) {
 792                 long ret = bindings.create_invoice_from_channelmanager_and_duration_since_epoch_with_payment_hash(channelmanager == null ? 0 : channelmanager.ptr, keys_manager == null ? 0 : keys_manager.ptr, logger == null ? 0 : logger.ptr, network, amt_msat.ptr, description, duration_since_epoch, invoice_expiry_delta_secs, InternalUtils.check_arr_len(payment_hash, 32));
 793                 GC.KeepAlive(channelmanager);
 794                 GC.KeepAlive(keys_manager);
 795                 GC.KeepAlive(logger);
 796                 GC.KeepAlive(network);
 797                 GC.KeepAlive(amt_msat);
 798                 GC.KeepAlive(description);
 799                 GC.KeepAlive(duration_since_epoch);
 800                 GC.KeepAlive(invoice_expiry_delta_secs);
 801                 GC.KeepAlive(payment_hash);
 802                 if (ret >= 0 && ret <= 4096) { return null; }
 803                 Result_InvoiceSignOrCreationErrorZ ret_hu_conv = Result_InvoiceSignOrCreationErrorZ.constr_from_ptr(ret);
 804                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(channelmanager); };
 805                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(keys_manager); };
 806                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(logger); };
 807                 return ret_hu_conv;
 808         }
 809
 810 } } } }