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

   1 using org.ldk.impl;
   2 using org.ldk.enums;
   3 using org.ldk.util;
   4 using System;
   5
   6 namespace org { namespace ldk { namespace structs {
   7
   8 /**
   9  * A trait to describe an object that can receive onion messages.
  10  */
  11 public class OnionMessageHandler : CommonBase {
  12         internal readonly bindings.LDKOnionMessageHandler bindings_instance;
  13         internal OnionMessageHandler(object _dummy, long ptr) : base(ptr) { bindings_instance = null; }
  14         private OnionMessageHandler(bindings.LDKOnionMessageHandler arg, bindings.LDKOnionMessageProvider OnionMessageProvider) : base(bindings.LDKOnionMessageHandler_new(arg, OnionMessageProvider)) {
  15                 this.ptrs_to.AddLast(arg);
  16                 this.ptrs_to.AddLast(OnionMessageProvider);
  17                 this.bindings_instance = arg;
  18         }
  19         ~OnionMessageHandler() {
  20                 if (ptr != 0) { bindings.OnionMessageHandler_free(ptr); }
  21         }
  22
  23         public interface OnionMessageHandlerInterface {
  24                 /**
  25                  * Handle an incoming `onion_message` message from the given peer.
  26                  */
  27                 void handle_onion_message(byte[] _peer_node_id, OnionMessage _msg);
  28                 /**
  29                  * Called when a connection is established with a peer. Can be used to track which peers
  30                  * advertise onion message support and are online.
  31                  *
  32                  * May return an `Err(())` if the features the peer supports are not sufficient to communicate
  33                  * with us. Implementors should be somewhat conservative about doing so, however, as other
  34                  * message handlers may still wish to communicate with this peer.
  35                  */
  36                 Result_NoneNoneZ peer_connected(byte[] _their_node_id, Init _init, bool _inbound);
  37                 /**
  38                  * Indicates a connection to the peer failed/an existing connection was lost. Allows handlers to
  39                  * drop and refuse to forward onion messages to this peer.
  40                  */
  41                 void peer_disconnected(byte[] _their_node_id);
  42                 /**
  43                  * Gets the node feature flags which this handler itself supports. All available handlers are
  44                  * queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
  45                  * which are broadcasted in our [`NodeAnnouncement`] message.
  46                  */
  47                 NodeFeatures provided_node_features();
  48                 /**
  49                  * Gets the init feature flags which should be sent to the given peer. All available handlers
  50                  * are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
  51                  * which are sent in our [`Init`] message.
  52                  *
  53                  * Note that this method is called before [`Self::peer_connected`].
  54                  */
  55                 InitFeatures provided_init_features(byte[] _their_node_id);
  56         }
  57         private class LDKOnionMessageHandlerHolder { internal OnionMessageHandler held; }
  58         private class LDKOnionMessageHandlerImpl : bindings.LDKOnionMessageHandler {
  59                 internal LDKOnionMessageHandlerImpl(OnionMessageHandlerInterface arg, LDKOnionMessageHandlerHolder impl_holder) { this.arg = arg; this.impl_holder = impl_holder; }
  60                 private OnionMessageHandlerInterface arg;
  61                 private LDKOnionMessageHandlerHolder impl_holder;
  62                 public void handle_onion_message(byte[] _peer_node_id, long _msg) {
  63                         org.ldk.structs.OnionMessage _msg_hu_conv = null; if (_msg < 0 || _msg > 4096) { _msg_hu_conv = new org.ldk.structs.OnionMessage(null, _msg); }
  64                         arg.handle_onion_message(_peer_node_id, _msg_hu_conv);
  65                                 GC.KeepAlive(arg);
  66                 }
  67                 public long peer_connected(byte[] _their_node_id, long _init, bool _inbound) {
  68                         org.ldk.structs.Init _init_hu_conv = null; if (_init < 0 || _init > 4096) { _init_hu_conv = new org.ldk.structs.Init(null, _init); }
  69                         Result_NoneNoneZ ret = arg.peer_connected(_their_node_id, _init_hu_conv, _inbound);
  70                                 GC.KeepAlive(arg);
  71                         long result = ret == null ? 0 : ret.clone_ptr();
  72                         return result;
  73                 }
  74                 public void peer_disconnected(byte[] _their_node_id) {
  75                         arg.peer_disconnected(_their_node_id);
  76                                 GC.KeepAlive(arg);
  77                 }
  78                 public long provided_node_features() {
  79                         NodeFeatures ret = arg.provided_node_features();
  80                                 GC.KeepAlive(arg);
  81                         long result = ret == null ? 0 : ret.clone_ptr();
  82                         return result;
  83                 }
  84                 public long provided_init_features(byte[] _their_node_id) {
  85                         InitFeatures ret = arg.provided_init_features(_their_node_id);
  86                                 GC.KeepAlive(arg);
  87                         long result = ret == null ? 0 : ret.clone_ptr();
  88                         return result;
  89                 }
  90         }
  91         public static OnionMessageHandler new_impl(OnionMessageHandlerInterface arg, OnionMessageProvider.OnionMessageProviderInterface OnionMessageProvider_impl) {
  92                 LDKOnionMessageHandlerHolder impl_holder = new LDKOnionMessageHandlerHolder();
  93                 impl_holder.held = new OnionMessageHandler(new LDKOnionMessageHandlerImpl(arg, impl_holder), OnionMessageProvider.new_impl(OnionMessageProvider_impl).bindings_instance);
  94                 return impl_holder.held;
  95         }
  96
  97         /**
  98          * Gets the underlying OnionMessageProvider.
  99          */
 100         public OnionMessageProvider get_onion_message_provider() {
 101                 OnionMessageProvider res = new OnionMessageProvider(null, bindings.LDKOnionMessageHandler_get_OnionMessageProvider(this.ptr));
 102                 this.ptrs_to.AddLast(res);
 103                 return res;
 104         }
 105
 106         /**
 107          * Handle an incoming `onion_message` message from the given peer.
 108          */
 109         public void handle_onion_message(byte[] peer_node_id, org.ldk.structs.OnionMessage msg) {
 110                 bindings.OnionMessageHandler_handle_onion_message(this.ptr, InternalUtils.check_arr_len(peer_node_id, 33), msg == null ? 0 : msg.ptr);
 111                 GC.KeepAlive(this);
 112                 GC.KeepAlive(peer_node_id);
 113                 GC.KeepAlive(msg);
 114                 if (this != null) { this.ptrs_to.AddLast(msg); };
 115         }
 116
 117         /**
 118          * Called when a connection is established with a peer. Can be used to track which peers
 119          * advertise onion message support and are online.
 120          *
 121          * May return an `Err(())` if the features the peer supports are not sufficient to communicate
 122          * with us. Implementors should be somewhat conservative about doing so, however, as other
 123          * message handlers may still wish to communicate with this peer.
 124          */
 125         public Result_NoneNoneZ peer_connected(byte[] their_node_id, org.ldk.structs.Init init, bool inbound) {
 126                 long ret = bindings.OnionMessageHandler_peer_connected(this.ptr, InternalUtils.check_arr_len(their_node_id, 33), init == null ? 0 : init.ptr, inbound);
 127                 GC.KeepAlive(this);
 128                 GC.KeepAlive(their_node_id);
 129                 GC.KeepAlive(init);
 130                 GC.KeepAlive(inbound);
 131                 if (ret >= 0 && ret <= 4096) { return null; }
 132                 Result_NoneNoneZ ret_hu_conv = Result_NoneNoneZ.constr_from_ptr(ret);
 133                 if (this != null) { this.ptrs_to.AddLast(init); };
 134                 return ret_hu_conv;
 135         }
 136
 137         /**
 138          * Indicates a connection to the peer failed/an existing connection was lost. Allows handlers to
 139          * drop and refuse to forward onion messages to this peer.
 140          */
 141         public void peer_disconnected(byte[] their_node_id) {
 142                 bindings.OnionMessageHandler_peer_disconnected(this.ptr, InternalUtils.check_arr_len(their_node_id, 33));
 143                 GC.KeepAlive(this);
 144                 GC.KeepAlive(their_node_id);
 145         }
 146
 147         /**
 148          * Gets the node feature flags which this handler itself supports. All available handlers are
 149          * queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
 150          * which are broadcasted in our [`NodeAnnouncement`] message.
 151          */
 152         public NodeFeatures provided_node_features() {
 153                 long ret = bindings.OnionMessageHandler_provided_node_features(this.ptr);
 154                 GC.KeepAlive(this);
 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(this); };
 158                 return ret_hu_conv;
 159         }
 160
 161         /**
 162          * Gets the init feature flags which should be sent to the given peer. All available handlers
 163          * are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
 164          * which are sent in our [`Init`] message.
 165          *
 166          * Note that this method is called before [`Self::peer_connected`].
 167          */
 168         public InitFeatures provided_init_features(byte[] their_node_id) {
 169                 long ret = bindings.OnionMessageHandler_provided_init_features(this.ptr, InternalUtils.check_arr_len(their_node_id, 33));
 170                 GC.KeepAlive(this);
 171                 GC.KeepAlive(their_node_id);
 172                 if (ret >= 0 && ret <= 4096) { return null; }
 173                 org.ldk.structs.InitFeatures ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.InitFeatures(null, ret); }
 174                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(this); };
 175                 return ret_hu_conv;
 176         }
 177
 178 }
 179 } } }