/**
* @param ChainState $state
* @param ChainCache $chainView
* @param Peer $peer
* @param Inventory[] $items
*/
public function advertised(ChainState $state, ChainCache $chainView, Peer $peer, array $items)
{
$chain = $state->getChain();
$fetch = [];
$lastUnknown = null;
foreach ($items as $inv) {
$hash = $inv->getHash();
if ($chain->containsHash($hash)) {
if (!$chainView->containsHash($hash)) {
$fetch[] = $inv;
}
} else {
$lastUnknown = $hash;
}
}
if (null !== $lastUnknown) {
echo "send headers\n";
$peer->getheaders($state->getHeadersLocator($lastUnknown));
$this->peerState->fetch($peer)->updateBlockAvailability($state, $lastUnknown);
}
if (count($fetch) > 0) {
echo 'SEND GETDATA:' . count($fetch) . '\\n';
$peer->getdata($fetch);
}
}
/**
* @param Peer $peer
* @param Headers $headers
*/
public function onHeaders(Peer $peer, Headers $headers)
{
$state = $this->chain();
$vHeaders = $headers->getHeaders();
$count = count($vHeaders);
if ($count === 0) {
return;
}
$this->headers->acceptBatch($state, $vHeaders);
$this->chains->checkTips();
$last = end($vHeaders);
$this->peerState->fetch($peer)->updateBlockAvailability($state, $last->getHash());
if (2000 === $count) {
$peer->getheaders($state->getHeadersLocator());
}
if ($count < 2000) {
echo 'start download' . PHP_EOL;
$this->blockDownload->start($state, $peer);
}
}
