_ Git - ldk-java/blob - src/main/java/org/ldk/structs/RoutingMessageHandler.java

   1 package org.ldk.structs;
   2
   3 import org.ldk.impl.bindings;
   4 import org.ldk.enums.*;
   5 import org.ldk.util.*;
   6 import java.util.Arrays;
   7 import java.lang.ref.Reference;
   8 import javax.annotation.Nullable;
   9
  10 /**
  11  * A trait to describe an object which can receive routing messages.
  12  *
  13  * # Implementor DoS Warnings
  14  *
  15  * For messages enabled with the `gossip_queries` feature there are potential DoS vectors when
  16  * handling inbound queries. Implementors using an on-disk network graph should be aware of
  17  * repeated disk I/O for queries accessing different parts of the network graph.
  18  */
  19 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  20 public class RoutingMessageHandler extends CommonBase {
  21         final bindings.LDKRoutingMessageHandler bindings_instance;
  22         RoutingMessageHandler(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
  23         private RoutingMessageHandler(bindings.LDKRoutingMessageHandler arg, bindings.LDKMessageSendEventsProvider MessageSendEventsProvider) {
  24                 super(bindings.LDKRoutingMessageHandler_new(arg, MessageSendEventsProvider));
  25                 this.ptrs_to.add(arg);
  26                 this.ptrs_to.add(MessageSendEventsProvider);
  27                 this.bindings_instance = arg;
  28         }
  29         @Override @SuppressWarnings("deprecation")
  30         protected void finalize() throws Throwable {
  31                 if (ptr != 0) { bindings.RoutingMessageHandler_free(ptr); } super.finalize();
  32         }
  33         /**
  34          * Destroys the object, freeing associated resources. After this call, any access
  35          * to this object may result in a SEGFAULT or worse.
  36          *
  37          * You should generally NEVER call this method. You should let the garbage collector
  38          * do this for you when it finalizes objects. However, it may be useful for types
  39          * which represent locks and should be closed immediately to avoid holding locks
  40          * until the GC runs.
  41          */
  42         public void destroy() {
  43                 if (ptr != 0) { bindings.RoutingMessageHandler_free(ptr); }
  44                 ptr = 0;
  45         }
  46         public static interface RoutingMessageHandlerInterface {
  47                 /**
  48                  * Handle an incoming `node_announcement` message, returning `true` if it should be forwarded on,
  49                  * `false` or returning an `Err` otherwise.
  50                  */
  51                 Result_boolLightningErrorZ handle_node_announcement(NodeAnnouncement msg);
  52                 /**
  53                  * Handle a `channel_announcement` message, returning `true` if it should be forwarded on, `false`
  54                  * or returning an `Err` otherwise.
  55                  */
  56                 Result_boolLightningErrorZ handle_channel_announcement(ChannelAnnouncement msg);
  57                 /**
  58                  * Handle an incoming `channel_update` message, returning true if it should be forwarded on,
  59                  * `false` or returning an `Err` otherwise.
  60                  */
  61                 Result_boolLightningErrorZ handle_channel_update(ChannelUpdate msg);
  62                 /**
  63                  * Gets channel announcements and updates required to dump our routing table to a remote node,
  64                  * starting at the `short_channel_id` indicated by `starting_point` and including announcements
  65                  * for a single channel.
  66                  */
  67                 Option_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ get_next_channel_announcement(long starting_point);
  68                 /**
  69                  * Gets a node announcement required to dump our routing table to a remote node, starting at
  70                  * the node *after* the provided pubkey and including up to one announcement immediately
  71                  * higher (as defined by `<PublicKey as Ord>::cmp`) than `starting_point`.
  72                  * If `None` is provided for `starting_point`, we start at the first node.
  73                  *
  74                  * Note that starting_point (or a relevant inner pointer) may be NULL or all-0s to represent None
  75                  * Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
  76                  */
  77                 NodeAnnouncement get_next_node_announcement(NodeId starting_point);
  78                 /**
  79                  * Called when a connection is established with a peer. This can be used to
  80                  * perform routing table synchronization using a strategy defined by the
  81                  * implementor.
  82                  *
  83                  * May return an `Err(())` if the features the peer supports are not sufficient to communicate
  84                  * with us. Implementors should be somewhat conservative about doing so, however, as other
  85                  * message handlers may still wish to communicate with this peer.
  86                  */
  87                 Result_NoneNoneZ peer_connected(byte[] their_node_id, Init init, boolean inbound);
  88                 /**
  89                  * Handles the reply of a query we initiated to learn about channels
  90                  * for a given range of blocks. We can expect to receive one or more
  91                  * replies to a single query.
  92                  */
  93                 Result_NoneLightningErrorZ handle_reply_channel_range(byte[] their_node_id, ReplyChannelRange msg);
  94                 /**
  95                  * Handles the reply of a query we initiated asking for routing gossip
  96                  * messages for a list of channels. We should receive this message when
  97                  * a node has completed its best effort to send us the pertaining routing
  98                  * gossip messages.
  99                  */
 100                 Result_NoneLightningErrorZ handle_reply_short_channel_ids_end(byte[] their_node_id, ReplyShortChannelIdsEnd msg);
 101                 /**
 102                  * Handles when a peer asks us to send a list of `short_channel_id`s
 103                  * for the requested range of blocks.
 104                  */
 105                 Result_NoneLightningErrorZ handle_query_channel_range(byte[] their_node_id, QueryChannelRange msg);
 106                 /**
 107                  * Handles when a peer asks us to send routing gossip messages for a
 108                  * list of `short_channel_id`s.
 109                  */
 110                 Result_NoneLightningErrorZ handle_query_short_channel_ids(byte[] their_node_id, QueryShortChannelIds msg);
 111                 /**
 112                  * Indicates that there are a large number of [`ChannelAnnouncement`] (or other) messages
 113                  * pending some async action. While there is no guarantee of the rate of future messages, the
 114                  * caller should seek to reduce the rate of new gossip messages handled, especially
 115                  * [`ChannelAnnouncement`]s.
 116                  */
 117                 boolean processing_queue_high();
 118                 /**
 119                  * Gets the node feature flags which this handler itself supports. All available handlers are
 120                  * queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
 121                  * which are broadcasted in our [`NodeAnnouncement`] message.
 122                  */
 123                 NodeFeatures provided_node_features();
 124                 /**
 125                  * Gets the init feature flags which should be sent to the given peer. All available handlers
 126                  * are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
 127                  * which are sent in our [`Init`] message.
 128                  *
 129                  * Note that this method is called before [`Self::peer_connected`].
 130                  */
 131                 InitFeatures provided_init_features(byte[] their_node_id);
 132         }
 133         private static class LDKRoutingMessageHandlerHolder { RoutingMessageHandler held; }
 134         public static RoutingMessageHandler new_impl(RoutingMessageHandlerInterface arg, MessageSendEventsProvider.MessageSendEventsProviderInterface MessageSendEventsProvider_impl) {
 135                 final LDKRoutingMessageHandlerHolder impl_holder = new LDKRoutingMessageHandlerHolder();
 136                 impl_holder.held = new RoutingMessageHandler(new bindings.LDKRoutingMessageHandler() {
 137                         @Override public long handle_node_announcement(long msg) {
 138                                 org.ldk.structs.NodeAnnouncement msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new org.ldk.structs.NodeAnnouncement(null, msg); }
 139                                 Result_boolLightningErrorZ ret = arg.handle_node_announcement(msg_hu_conv);
 140                                 Reference.reachabilityFence(arg);
 141                                 long result = ret == null ? 0 : ret.clone_ptr();
 142                                 return result;
 143                         }
 144                         @Override public long handle_channel_announcement(long msg) {
 145                                 org.ldk.structs.ChannelAnnouncement msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new org.ldk.structs.ChannelAnnouncement(null, msg); }
 146                                 Result_boolLightningErrorZ ret = arg.handle_channel_announcement(msg_hu_conv);
 147                                 Reference.reachabilityFence(arg);
 148                                 long result = ret == null ? 0 : ret.clone_ptr();
 149                                 return result;
 150                         }
 151                         @Override public long handle_channel_update(long msg) {
 152                                 org.ldk.structs.ChannelUpdate msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new org.ldk.structs.ChannelUpdate(null, msg); }
 153                                 Result_boolLightningErrorZ ret = arg.handle_channel_update(msg_hu_conv);
 154                                 Reference.reachabilityFence(arg);
 155                                 long result = ret == null ? 0 : ret.clone_ptr();
 156                                 return result;
 157                         }
 158                         @Override public long get_next_channel_announcement(long starting_point) {
 159                                 Option_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ ret = arg.get_next_channel_announcement(starting_point);
 160                                 Reference.reachabilityFence(arg);
 161                                 long result = ret == null ? 0 : ret.clone_ptr();
 162                                 if (impl_holder.held != null) { impl_holder.held.ptrs_to.add(ret); };
 163                                 return result;
 164                         }
 165                         @Override public long get_next_node_announcement(long starting_point) {
 166                                 org.ldk.structs.NodeId starting_point_hu_conv = null; if (starting_point < 0 || starting_point > 4096) { starting_point_hu_conv = new org.ldk.structs.NodeId(null, starting_point); }
 167                                 if (starting_point_hu_conv != null) { starting_point_hu_conv.ptrs_to.add(this); };
 168                                 NodeAnnouncement ret = arg.get_next_node_announcement(starting_point_hu_conv);
 169                                 Reference.reachabilityFence(arg);
 170                                 long result = ret == null ? 0 : ret.clone_ptr();
 171                                 return result;
 172                         }
 173                         @Override public long peer_connected(byte[] their_node_id, long init, boolean inbound) {
 174                                 org.ldk.structs.Init init_hu_conv = null; if (init < 0 || init > 4096) { init_hu_conv = new org.ldk.structs.Init(null, init); }
 175                                 Result_NoneNoneZ ret = arg.peer_connected(their_node_id, init_hu_conv, inbound);
 176                                 Reference.reachabilityFence(arg);
 177                                 long result = ret == null ? 0 : ret.clone_ptr();
 178                                 return result;
 179                         }
 180                         @Override public long handle_reply_channel_range(byte[] their_node_id, long msg) {
 181                                 org.ldk.structs.ReplyChannelRange msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new org.ldk.structs.ReplyChannelRange(null, msg); }
 182                                 if (msg_hu_conv != null) { msg_hu_conv.ptrs_to.add(this); };
 183                                 Result_NoneLightningErrorZ ret = arg.handle_reply_channel_range(their_node_id, msg_hu_conv);
 184                                 Reference.reachabilityFence(arg);
 185                                 long result = ret == null ? 0 : ret.clone_ptr();
 186                                 return result;
 187                         }
 188                         @Override public long handle_reply_short_channel_ids_end(byte[] their_node_id, long msg) {
 189                                 org.ldk.structs.ReplyShortChannelIdsEnd msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new org.ldk.structs.ReplyShortChannelIdsEnd(null, msg); }
 190                                 if (msg_hu_conv != null) { msg_hu_conv.ptrs_to.add(this); };
 191                                 Result_NoneLightningErrorZ ret = arg.handle_reply_short_channel_ids_end(their_node_id, msg_hu_conv);
 192                                 Reference.reachabilityFence(arg);
 193                                 long result = ret == null ? 0 : ret.clone_ptr();
 194                                 return result;
 195                         }
 196                         @Override public long handle_query_channel_range(byte[] their_node_id, long msg) {
 197                                 org.ldk.structs.QueryChannelRange msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new org.ldk.structs.QueryChannelRange(null, msg); }
 198                                 if (msg_hu_conv != null) { msg_hu_conv.ptrs_to.add(this); };
 199                                 Result_NoneLightningErrorZ ret = arg.handle_query_channel_range(their_node_id, msg_hu_conv);
 200                                 Reference.reachabilityFence(arg);
 201                                 long result = ret == null ? 0 : ret.clone_ptr();
 202                                 return result;
 203                         }
 204                         @Override public long handle_query_short_channel_ids(byte[] their_node_id, long msg) {
 205                                 org.ldk.structs.QueryShortChannelIds msg_hu_conv = null; if (msg < 0 || msg > 4096) { msg_hu_conv = new org.ldk.structs.QueryShortChannelIds(null, msg); }
 206                                 if (msg_hu_conv != null) { msg_hu_conv.ptrs_to.add(this); };
 207                                 Result_NoneLightningErrorZ ret = arg.handle_query_short_channel_ids(their_node_id, msg_hu_conv);
 208                                 Reference.reachabilityFence(arg);
 209                                 long result = ret == null ? 0 : ret.clone_ptr();
 210                                 return result;
 211                         }
 212                         @Override public boolean processing_queue_high() {
 213                                 boolean ret = arg.processing_queue_high();
 214                                 Reference.reachabilityFence(arg);
 215                                 return ret;
 216                         }
 217                         @Override public long provided_node_features() {
 218                                 NodeFeatures ret = arg.provided_node_features();
 219                                 Reference.reachabilityFence(arg);
 220                                 long result = ret == null ? 0 : ret.clone_ptr();
 221                                 return result;
 222                         }
 223                         @Override public long provided_init_features(byte[] their_node_id) {
 224                                 InitFeatures ret = arg.provided_init_features(their_node_id);
 225                                 Reference.reachabilityFence(arg);
 226                                 long result = ret == null ? 0 : ret.clone_ptr();
 227                                 return result;
 228                         }
 229                 }, MessageSendEventsProvider.new_impl(MessageSendEventsProvider_impl).bindings_instance);
 230                 return impl_holder.held;
 231         }
 232
 233         /**
 234          * Gets the underlying MessageSendEventsProvider.
 235          */
 236         public MessageSendEventsProvider get_message_send_events_provider() {
 237                 MessageSendEventsProvider res = new MessageSendEventsProvider(null, bindings.LDKRoutingMessageHandler_get_MessageSendEventsProvider(this.ptr));
 238                 res.ptrs_to.add(this);
 239                 return res;
 240         }
 241
 242         /**
 243          * Handle an incoming `node_announcement` message, returning `true` if it should be forwarded on,
 244          * `false` or returning an `Err` otherwise.
 245          */
 246         public Result_boolLightningErrorZ handle_node_announcement(org.ldk.structs.NodeAnnouncement msg) {
 247                 long ret = bindings.RoutingMessageHandler_handle_node_announcement(this.ptr, msg == null ? 0 : msg.ptr);
 248                 Reference.reachabilityFence(this);
 249                 Reference.reachabilityFence(msg);
 250                 if (ret >= 0 && ret <= 4096) { return null; }
 251                 Result_boolLightningErrorZ ret_hu_conv = Result_boolLightningErrorZ.constr_from_ptr(ret);
 252                 if (this != null) { this.ptrs_to.add(msg); };
 253                 return ret_hu_conv;
 254         }
 255
 256         /**
 257          * Handle a `channel_announcement` message, returning `true` if it should be forwarded on, `false`
 258          * or returning an `Err` otherwise.
 259          */
 260         public Result_boolLightningErrorZ handle_channel_announcement(org.ldk.structs.ChannelAnnouncement msg) {
 261                 long ret = bindings.RoutingMessageHandler_handle_channel_announcement(this.ptr, msg == null ? 0 : msg.ptr);
 262                 Reference.reachabilityFence(this);
 263                 Reference.reachabilityFence(msg);
 264                 if (ret >= 0 && ret <= 4096) { return null; }
 265                 Result_boolLightningErrorZ ret_hu_conv = Result_boolLightningErrorZ.constr_from_ptr(ret);
 266                 if (this != null) { this.ptrs_to.add(msg); };
 267                 return ret_hu_conv;
 268         }
 269
 270         /**
 271          * Handle an incoming `channel_update` message, returning true if it should be forwarded on,
 272          * `false` or returning an `Err` otherwise.
 273          */
 274         public Result_boolLightningErrorZ handle_channel_update(org.ldk.structs.ChannelUpdate msg) {
 275                 long ret = bindings.RoutingMessageHandler_handle_channel_update(this.ptr, msg == null ? 0 : msg.ptr);
 276                 Reference.reachabilityFence(this);
 277                 Reference.reachabilityFence(msg);
 278                 if (ret >= 0 && ret <= 4096) { return null; }
 279                 Result_boolLightningErrorZ ret_hu_conv = Result_boolLightningErrorZ.constr_from_ptr(ret);
 280                 if (this != null) { this.ptrs_to.add(msg); };
 281                 return ret_hu_conv;
 282         }
 283
 284         /**
 285          * Gets channel announcements and updates required to dump our routing table to a remote node,
 286          * starting at the `short_channel_id` indicated by `starting_point` and including announcements
 287          * for a single channel.
 288          */
 289         public Option_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ get_next_channel_announcement(long starting_point) {
 290                 long ret = bindings.RoutingMessageHandler_get_next_channel_announcement(this.ptr, starting_point);
 291                 Reference.reachabilityFence(this);
 292                 Reference.reachabilityFence(starting_point);
 293                 if (ret >= 0 && ret <= 4096) { return null; }
 294                 org.ldk.structs.Option_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ ret_hu_conv = org.ldk.structs.Option_C3Tuple_ChannelAnnouncementChannelUpdateChannelUpdateZZ.constr_from_ptr(ret);
 295                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
 296                 return ret_hu_conv;
 297         }
 298
 299         /**
 300          * Gets a node announcement required to dump our routing table to a remote node, starting at
 301          * the node *after* the provided pubkey and including up to one announcement immediately
 302          * higher (as defined by `<PublicKey as Ord>::cmp`) than `starting_point`.
 303          * If `None` is provided for `starting_point`, we start at the first node.
 304          *
 305          * Note that starting_point (or a relevant inner pointer) may be NULL or all-0s to represent None
 306          * Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None
 307          */
 308         @Nullable
 309         public NodeAnnouncement get_next_node_announcement(@Nullable org.ldk.structs.NodeId starting_point) {
 310                 long ret = bindings.RoutingMessageHandler_get_next_node_announcement(this.ptr, starting_point == null ? 0 : starting_point.ptr);
 311                 Reference.reachabilityFence(this);
 312                 Reference.reachabilityFence(starting_point);
 313                 if (ret >= 0 && ret <= 4096) { return null; }
 314                 org.ldk.structs.NodeAnnouncement ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.NodeAnnouncement(null, ret); }
 315                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
 316                 if (this != null) { this.ptrs_to.add(starting_point); };
 317                 return ret_hu_conv;
 318         }
 319
 320         /**
 321          * Called when a connection is established with a peer. This can be used to
 322          * perform routing table synchronization using a strategy defined by the
 323          * implementor.
 324          *
 325          * May return an `Err(())` if the features the peer supports are not sufficient to communicate
 326          * with us. Implementors should be somewhat conservative about doing so, however, as other
 327          * message handlers may still wish to communicate with this peer.
 328          */
 329         public Result_NoneNoneZ peer_connected(byte[] their_node_id, org.ldk.structs.Init init, boolean inbound) {
 330                 long ret = bindings.RoutingMessageHandler_peer_connected(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), init == null ? 0 : init.ptr, inbound);
 331                 Reference.reachabilityFence(this);
 332                 Reference.reachabilityFence(their_node_id);
 333                 Reference.reachabilityFence(init);
 334                 Reference.reachabilityFence(inbound);
 335                 if (ret >= 0 && ret <= 4096) { return null; }
 336                 Result_NoneNoneZ ret_hu_conv = Result_NoneNoneZ.constr_from_ptr(ret);
 337                 if (this != null) { this.ptrs_to.add(init); };
 338                 return ret_hu_conv;
 339         }
 340
 341         /**
 342          * Handles the reply of a query we initiated to learn about channels
 343          * for a given range of blocks. We can expect to receive one or more
 344          * replies to a single query.
 345          */
 346         public Result_NoneLightningErrorZ handle_reply_channel_range(byte[] their_node_id, org.ldk.structs.ReplyChannelRange msg) {
 347                 long ret = bindings.RoutingMessageHandler_handle_reply_channel_range(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), msg == null ? 0 : msg.ptr);
 348                 Reference.reachabilityFence(this);
 349                 Reference.reachabilityFence(their_node_id);
 350                 Reference.reachabilityFence(msg);
 351                 if (ret >= 0 && ret <= 4096) { return null; }
 352                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 353                 if (this != null) { this.ptrs_to.add(msg); };
 354                 return ret_hu_conv;
 355         }
 356
 357         /**
 358          * Handles the reply of a query we initiated asking for routing gossip
 359          * messages for a list of channels. We should receive this message when
 360          * a node has completed its best effort to send us the pertaining routing
 361          * gossip messages.
 362          */
 363         public Result_NoneLightningErrorZ handle_reply_short_channel_ids_end(byte[] their_node_id, org.ldk.structs.ReplyShortChannelIdsEnd msg) {
 364                 long ret = bindings.RoutingMessageHandler_handle_reply_short_channel_ids_end(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), msg == null ? 0 : msg.ptr);
 365                 Reference.reachabilityFence(this);
 366                 Reference.reachabilityFence(their_node_id);
 367                 Reference.reachabilityFence(msg);
 368                 if (ret >= 0 && ret <= 4096) { return null; }
 369                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 370                 if (this != null) { this.ptrs_to.add(msg); };
 371                 return ret_hu_conv;
 372         }
 373
 374         /**
 375          * Handles when a peer asks us to send a list of `short_channel_id`s
 376          * for the requested range of blocks.
 377          */
 378         public Result_NoneLightningErrorZ handle_query_channel_range(byte[] their_node_id, org.ldk.structs.QueryChannelRange msg) {
 379                 long ret = bindings.RoutingMessageHandler_handle_query_channel_range(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), msg == null ? 0 : msg.ptr);
 380                 Reference.reachabilityFence(this);
 381                 Reference.reachabilityFence(their_node_id);
 382                 Reference.reachabilityFence(msg);
 383                 if (ret >= 0 && ret <= 4096) { return null; }
 384                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 385                 if (this != null) { this.ptrs_to.add(msg); };
 386                 return ret_hu_conv;
 387         }
 388
 389         /**
 390          * Handles when a peer asks us to send routing gossip messages for a
 391          * list of `short_channel_id`s.
 392          */
 393         public Result_NoneLightningErrorZ handle_query_short_channel_ids(byte[] their_node_id, org.ldk.structs.QueryShortChannelIds msg) {
 394                 long ret = bindings.RoutingMessageHandler_handle_query_short_channel_ids(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), msg == null ? 0 : msg.ptr);
 395                 Reference.reachabilityFence(this);
 396                 Reference.reachabilityFence(their_node_id);
 397                 Reference.reachabilityFence(msg);
 398                 if (ret >= 0 && ret <= 4096) { return null; }
 399                 Result_NoneLightningErrorZ ret_hu_conv = Result_NoneLightningErrorZ.constr_from_ptr(ret);
 400                 if (this != null) { this.ptrs_to.add(msg); };
 401                 return ret_hu_conv;
 402         }
 403
 404         /**
 405          * Indicates that there are a large number of [`ChannelAnnouncement`] (or other) messages
 406          * pending some async action. While there is no guarantee of the rate of future messages, the
 407          * caller should seek to reduce the rate of new gossip messages handled, especially
 408          * [`ChannelAnnouncement`]s.
 409          */
 410         public boolean processing_queue_high() {
 411                 boolean ret = bindings.RoutingMessageHandler_processing_queue_high(this.ptr);
 412                 Reference.reachabilityFence(this);
 413                 return ret;
 414         }
 415
 416         /**
 417          * Gets the node feature flags which this handler itself supports. All available handlers are
 418          * queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
 419          * which are broadcasted in our [`NodeAnnouncement`] message.
 420          */
 421         public NodeFeatures provided_node_features() {
 422                 long ret = bindings.RoutingMessageHandler_provided_node_features(this.ptr);
 423                 Reference.reachabilityFence(this);
 424                 if (ret >= 0 && ret <= 4096) { return null; }
 425                 org.ldk.structs.NodeFeatures ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.NodeFeatures(null, ret); }
 426                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
 427                 return ret_hu_conv;
 428         }
 429
 430         /**
 431          * Gets the init feature flags which should be sent to the given peer. All available handlers
 432          * are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
 433          * which are sent in our [`Init`] message.
 434          *
 435          * Note that this method is called before [`Self::peer_connected`].
 436          */
 437         public InitFeatures provided_init_features(byte[] their_node_id) {
 438                 long ret = bindings.RoutingMessageHandler_provided_init_features(this.ptr, InternalUtils.check_arr_len(their_node_id, 33));
 439                 Reference.reachabilityFence(this);
 440                 Reference.reachabilityFence(their_node_id);
 441                 if (ret >= 0 && ret <= 4096) { return null; }
 442                 org.ldk.structs.InitFeatures ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.InitFeatures(null, ret); }
 443                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
 444                 return ret_hu_conv;
 445         }
 446
 447 }