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handle announcements

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This commit is contained in:
Robert Habermeier 2016-11-09 16:21:09 +01:00
parent ec1b982b52
commit c132775bb1
1 changed files with 35 additions and 3 deletions
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38
ethcore/light/src/net/mod.rs
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@ -200,15 +200,47 @@ impl LightProtocol {
sent_head: pending.sent_head,
});
Ok(())
}
// Handle an announcement.
fn announcement(&self, peer: &PeerId, io: &NetworkContext, data: UntrustedRlp) -> Result<(), Error> {
const MAX_NEW_HASHES: usize = 256;
if !self.peers.read().contains_key(peer) {
debug!(target: "les", "Ignoring announcement from unknown peer");
return Ok(())
}
unimplemented!()
let announcement = try!(status::parse_announcement(data));
let mut peers = self.peers.write();
let peer_info = match peers.get_mut(peer) {
Some(info) => info,
None => return Ok(()),
};
// update status.
{
// TODO: punish peer if they've moved backwards.
let status = &mut peer_info.status;
let last_head = status.head_hash;
status.head_hash = announcement.head_hash;
status.head_td = announcement.head_td;
status.head_num = announcement.head_num;
status.last_head = Some((last_head, announcement.reorg_depth));
}
// update capabilities.
{
let caps = &mut peer_info.capabilities;
caps.serve_headers = caps.serve_headers || announcement.serve_headers;
caps.serve_state_since = caps.serve_state_since.or(announcement.serve_state_since);
caps.serve_chain_since = caps.serve_chain_since.or(announcement.serve_chain_since);
caps.tx_relay = caps.tx_relay || announcement.tx_relay;
}
// TODO: notify listeners if new best block.
Ok(())
}
// Handle a request for block headers.