/**
- * A sender, receiver and forwarder of onion messages. In upcoming releases, this object will be
- * used to retrieve invoices and fulfill invoice requests from [offers]. Currently, only sending
- * and receiving custom onion messages is supported.
+ * A sender, receiver and forwarder of [`OnionMessage`]s.
+ *
+ * # Handling Messages
+ *
+ * `OnionMessenger` implements [`OnionMessageHandler`], making it responsible for either forwarding
+ * messages to peers or delegating to the appropriate handler for the message type. Currently, the
+ * available handlers are:
+ * [`OffersMessageHandler`], for responding to [`InvoiceRequest`]s and paying [`Bolt12Invoice`]s
+ * [`CustomOnionMessageHandler`], for handling user-defined message types
+ *
+ * # Sending Messages
+ *
+ * [`OnionMessage`]s are sent initially using [`OnionMessenger::send_onion_message`]. When handling
+ * a message, the matched handler may return a response message which `OnionMessenger` will send
+ * on its behalf.
*
* # Example
*
* ```
* # extern crate bitcoin;
* # use bitcoin::hashes::_export::_core::time::Duration;
- * # use bitcoin::secp256k1::{PublicKey, Secp256k1, SecretKey};
- * # use lightning::chain::keysinterface::{InMemorySigner, KeysManager, KeysInterface};
- * # use lightning::ln::msgs::DecodeError;
+ * # use bitcoin::hashes::hex::FromHex;
+ * # use bitcoin::secp256k1::{PublicKey, Secp256k1, SecretKey, self};
+ * # use lightning::blinded_path::BlindedPath;
+ * # use lightning::sign::{EntropySource, KeysManager};
* # use lightning::ln::peer_handler::IgnoringMessageHandler;
- * # use lightning::onion_message::blinded_path::BlindedPath;
- * # use lightning::onion_message::messenger::{CustomOnionMessageContents, Destination, OnionMessageContents, OnionMessenger};
+ * # use lightning::onion_message::messenger::{Destination, MessageRouter, OnionMessagePath, OnionMessenger};
+ * # use lightning::onion_message::packet::OnionMessageContents;
* # use lightning::util::logger::{Logger, Record};
* # use lightning::util::ser::{Writeable, Writer};
* # use lightning::io;
* # use std::sync::Arc;
- * # struct FakeLogger {};
+ * # struct FakeLogger;
* # impl Logger for FakeLogger {
- * # fn log(&self, record: &Record) { unimplemented!() }
+ * # fn log(&self, record: Record) { println!(\"{:?}\" , record); }
+ * # }
+ * # struct FakeMessageRouter {}
+ * # impl MessageRouter for FakeMessageRouter {
+ * # fn find_path(&self, sender: PublicKey, peers: Vec<PublicKey>, destination: Destination) -> Result<OnionMessagePath, ()> {
+ * # let secp_ctx = Secp256k1::new();
+ * # let node_secret = SecretKey::from_slice(&<Vec<u8>>::from_hex(\"0101010101010101010101010101010101010101010101010101010101010101\").unwrap()[..]).unwrap();
+ * # let hop_node_id1 = PublicKey::from_secret_key(&secp_ctx, &node_secret);
+ * # let hop_node_id2 = hop_node_id1;
+ * # Ok(OnionMessagePath {
+ * # intermediate_nodes: vec![hop_node_id1, hop_node_id2],
+ * # destination,
+ * # first_node_addresses: None,
+ * # })
+ * # }
+ * # fn create_blinded_paths<T: secp256k1::Signing + secp256k1::Verification>(
+ * # &self, _recipient: PublicKey, _peers: Vec<PublicKey>, _secp_ctx: &Secp256k1<T>
+ * # ) -> Result<Vec<BlindedPath>, ()> {
+ * # unreachable!()
+ * # }
* # }
* # let seed = [42u8; 32];
* # let time = Duration::from_secs(123456);
* # let keys_manager = KeysManager::new(&seed, time.as_secs(), time.subsec_nanos());
* # let logger = Arc::new(FakeLogger {});
- * # let node_secret = SecretKey::from_slice(&hex::decode(\"0101010101010101010101010101010101010101010101010101010101010101\").unwrap()[..]).unwrap();
+ * # let node_secret = SecretKey::from_slice(&<Vec<u8>>::from_hex(\"0101010101010101010101010101010101010101010101010101010101010101\").unwrap()[..]).unwrap();
* # let secp_ctx = Secp256k1::new();
* # let hop_node_id1 = PublicKey::from_secret_key(&secp_ctx, &node_secret);
- * # let (hop_node_id2, hop_node_id3, hop_node_id4) = (hop_node_id1, hop_node_id1, hop_node_id1);
+ * # let (hop_node_id3, hop_node_id4) = (hop_node_id1, hop_node_id1);
* # let destination_node_id = hop_node_id1;
- * # let your_custom_message_handler = IgnoringMessageHandler {};
+ * # let message_router = Arc::new(FakeMessageRouter {});
+ * # let custom_message_handler = IgnoringMessageHandler {};
+ * # let offers_message_handler = IgnoringMessageHandler {};
* Create the onion messenger. This must use the same `keys_manager` as is passed to your
* ChannelManager.
- * let onion_messenger = OnionMessenger::new(&keys_manager, logger, your_custom_message_handler);
+ * let onion_messenger = OnionMessenger::new(
+ * &keys_manager, &keys_manager, logger, message_router, &offers_message_handler,
+ * &custom_message_handler
+ * );
*
- * # #[derive(Clone)]
+ * # #[derive(Debug, Clone)]
* # struct YourCustomMessage {}
* impl Writeable for YourCustomMessage {
* \tfn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
* \t\t// Write your custom onion message to `w`
* \t}
* }
- * impl CustomOnionMessageContents for YourCustomMessage {
+ * impl OnionMessageContents for YourCustomMessage {
* \tfn tlv_type(&self) -> u64 {
* \t\t# let your_custom_message_type = 42;
* \t\tyour_custom_message_type
* \t}
* }
* Send a custom onion message to a node id.
- * let intermediate_hops = [hop_node_id1, hop_node_id2];
+ * let destination = Destination::Node(destination_node_id);
* let reply_path = None;
- * # let your_custom_message = YourCustomMessage {};
- * let message = OnionMessageContents::Custom(your_custom_message);
- * onion_messenger.send_onion_message(&intermediate_hops, Destination::Node(destination_node_id), message, reply_path);
+ * # let message = YourCustomMessage {};
+ * onion_messenger.send_onion_message(message, destination, reply_path);
*
* Create a blinded path to yourself, for someone to send an onion message to.
* # let your_node_id = hop_node_id1;
* let hops = [hop_node_id3, hop_node_id4, your_node_id];
- * let blinded_path = BlindedPath::new(&hops, &keys_manager, &secp_ctx).unwrap();
+ * let blinded_path = BlindedPath::new_for_message(&hops, &keys_manager, &secp_ctx).unwrap();
*
* Send a custom onion message to a blinded path.
- * # let intermediate_hops = [hop_node_id1, hop_node_id2];
+ * let destination = Destination::BlindedPath(blinded_path);
* let reply_path = None;
- * # let your_custom_message = YourCustomMessage {};
- * let message = OnionMessageContents::Custom(your_custom_message);
- * onion_messenger.send_onion_message(&intermediate_hops, Destination::BlindedPath(blinded_path), message, reply_path);
+ * # let message = YourCustomMessage {};
+ * onion_messenger.send_onion_message(message, destination, reply_path);
* ```
*
- * [offers]: <https://github.com/lightning/bolts/pull/798>
- * [`OnionMessenger`]: crate::onion_message::OnionMessenger
+ * [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
+ * [`Bolt12Invoice`]: crate::offers::invoice::Bolt12Invoice
*/
@SuppressWarnings("unchecked") // We correctly assign various generic arrays
public class OnionMessenger extends CommonBase {
* Constructs a new `OnionMessenger` to send, forward, and delegate received onion messages to
* their respective handlers.
*/
- public static OnionMessenger of(org.ldk.structs.KeysInterface keys_manager, org.ldk.structs.Logger logger, org.ldk.structs.CustomOnionMessageHandler custom_handler) {
- long ret = bindings.OnionMessenger_new(keys_manager == null ? 0 : keys_manager.ptr, logger == null ? 0 : logger.ptr, custom_handler == null ? 0 : custom_handler.ptr);
- Reference.reachabilityFence(keys_manager);
+ public static OnionMessenger of(org.ldk.structs.EntropySource entropy_source, org.ldk.structs.NodeSigner node_signer, org.ldk.structs.Logger logger, org.ldk.structs.MessageRouter message_router, org.ldk.structs.OffersMessageHandler offers_handler, org.ldk.structs.CustomOnionMessageHandler custom_handler) {
+ long ret = bindings.OnionMessenger_new(entropy_source.ptr, node_signer.ptr, logger.ptr, message_router.ptr, offers_handler.ptr, custom_handler.ptr);
+ Reference.reachabilityFence(entropy_source);
+ Reference.reachabilityFence(node_signer);
Reference.reachabilityFence(logger);
+ Reference.reachabilityFence(message_router);
+ Reference.reachabilityFence(offers_handler);
Reference.reachabilityFence(custom_handler);
if (ret >= 0 && ret <= 4096) { return null; }
org.ldk.structs.OnionMessenger ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.OnionMessenger(null, ret); }
if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(ret_hu_conv); };
- if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(keys_manager); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(entropy_source); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(node_signer); };
if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(logger); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(message_router); };
+ if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(offers_handler); };
if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(custom_handler); };
return ret_hu_conv;
}
/**
- * Send an onion message with contents `message` to `destination`, routing it through `intermediate_nodes`.
+ * Sends an [`OnionMessage`] with the given `contents` to `destination`.
+ *
* See [`OnionMessenger`] for example usage.
*
* Note that reply_path (or a relevant inner pointer) may be NULL or all-0s to represent None
*/
- public Result_NoneSendErrorZ send_onion_message(byte[][] intermediate_nodes, org.ldk.structs.Destination destination, org.ldk.structs.OnionMessageContents message, @Nullable org.ldk.structs.BlindedPath reply_path) {
- long ret = bindings.OnionMessenger_send_onion_message(this.ptr, intermediate_nodes != null ? Arrays.stream(intermediate_nodes).map(intermediate_nodes_conv_8 -> InternalUtils.check_arr_len(intermediate_nodes_conv_8, 33)).toArray(byte[][]::new) : null, destination.ptr, message.ptr, reply_path == null ? 0 : reply_path.ptr);
+ public Result_SendSuccessSendErrorZ send_onion_message(org.ldk.structs.OnionMessageContents contents, org.ldk.structs.Destination destination, @Nullable org.ldk.structs.BlindedPath reply_path) {
+ long ret = bindings.OnionMessenger_send_onion_message(this.ptr, contents.ptr, destination.ptr, reply_path == null ? 0 : reply_path.ptr);
Reference.reachabilityFence(this);
- Reference.reachabilityFence(intermediate_nodes);
+ Reference.reachabilityFence(contents);
Reference.reachabilityFence(destination);
- Reference.reachabilityFence(message);
Reference.reachabilityFence(reply_path);
if (ret >= 0 && ret <= 4096) { return null; }
- Result_NoneSendErrorZ ret_hu_conv = Result_NoneSendErrorZ.constr_from_ptr(ret);
+ Result_SendSuccessSendErrorZ ret_hu_conv = Result_SendSuccessSendErrorZ.constr_from_ptr(ret);
+ if (this != null) { this.ptrs_to.add(contents); };
+ if (this != null) { this.ptrs_to.add(destination); };
if (this != null) { this.ptrs_to.add(reply_path); };
return ret_hu_conv;
}
return ret_hu_conv;
}
- /**
- * Constructs a new OnionMessageProvider which calls the relevant methods on this_arg.
- * This copies the `inner` pointer in this_arg and thus the returned OnionMessageProvider must be freed before this_arg is
- */
- public OnionMessageProvider as_OnionMessageProvider() {
- long ret = bindings.OnionMessenger_as_OnionMessageProvider(this.ptr);
- Reference.reachabilityFence(this);
- if (ret >= 0 && ret <= 4096) { return null; }
- OnionMessageProvider ret_hu_conv = new OnionMessageProvider(null, ret);
- if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); };
- return ret_hu_conv;
- }
-
}
projects / ldk-java / blobdiff