pub struct ProtocolAddress {
    channel: ChannelPtr,
    addrs_sub: MessageSubscription<AddrsMessage>,
    get_addrs_sub: MessageSubscription<GetAddrsMessage>,
    hosts: HostsPtr,
    settings: SettingsPtr,
    jobsman: ProtocolJobsManagerPtr,
}
Expand description

Defines address and get-address messages. On receiving GetAddr, nodes reply an AddrMessage containing nodes from their hostlist. On receiving an AddrMessage, nodes enter the info into their greylists.

The node selection logic for creating an AddrMessage is as follows:

  1. First select nodes matching the requested transports from the anchorlist. These nodes have the highest guarantee of being reachable, so we prioritize them first.

  2. Then select nodes matching the requested transports from the whitelist.

  3. Next select whitelist nodes that don’t match our transports. We do this so that nodes share and propagate nodes of different transports, even if they can’t connect to them themselves.

  4. Finally, if there’s still space available, fill the remaining vector space with darklist entries. This is necessary to propagate transports that neither this node nor the receiving node support.

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§channel: ChannelPtr§addrs_sub: MessageSubscription<AddrsMessage>§get_addrs_sub: MessageSubscription<GetAddrsMessage>§hosts: HostsPtr§settings: SettingsPtr§jobsman: ProtocolJobsManagerPtr

Implementations§

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impl ProtocolAddress

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pub async fn init(channel: ChannelPtr, p2p: P2pPtr) -> ProtocolBasePtr

Creates a new address protocol. Makes an address, an external address and a get-address subscription and adds them to the address protocol instance.

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async fn handle_receive_addrs(self: Arc<Self>) -> Result<()>

Handles receiving the address message. Loops to continually receive address messages on the address subscription. Validates and adds the received addresses to the greylist.

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async fn handle_receive_get_addrs(self: Arc<Self>) -> Result<()>

Handles receiving the get-address message. Continually receives get-address messages on the get-address subscription. Then replies with an address message.

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async fn send_my_addrs(self: Arc<Self>) -> Result<()>

Send our own external addresses over a channel. Set the last_seen field to now.

Trait Implementations§

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impl ProtocolBase for ProtocolAddress

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fn start<'life0, 'async_trait>( self: Arc<Self>, ex: Arc<Executor<'life0>> ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Start the address protocol. If it’s an outbound session and has an external address, send our external address. Run receive address and get address protocols on the protocol task manager. Then send get-address msg.

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fn name(&self) -> &'static str

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