Function create_onion_message

pub fn create_onion_message<ES, NS, NL, T>(
    entropy_source: &ES,
    node_signer: &NS,
    node_id_lookup: &NL,
    secp_ctx: &Secp256k1<All>,
    path: OnionMessagePath,
    contents: T,
    reply_path: Option<BlindedMessagePath>,
) -> Result<(PublicKey, OnionMessage, Option<Vec<SocketAddress>>), SendError>
where
    ES: Deref,
    NS: Deref,
    NL: Deref,
    T: OnionMessageContents,
    <ES as Deref>::Target: EntropySource,
    <NS as Deref>::Target: NodeSigner,
    <NL as Deref>::Target: NodeIdLookUp,

Creates an OnionMessage with the given contents for sending to the destination of path.

Returns the node id of the peer to send the message to, the message itself, and any addresses needed to connect to the first node.

Returns SendError::UnresolvedIntroductionNode if:

• destination contains a blinded path with an IntroductionNode::DirectedShortChannelId,
• unless it can be resolved by NodeIdLookUp::next_node_id. Use create_onion_message_resolving_destination instead to resolve the introduction node first with a ReadOnlyNetworkGraph.