/**
* @param NetworkAddressInterface $remotePeer
* @return \React\Promise\PromiseInterface
*/
public function connect(NetworkAddressInterface $remotePeer)
{
return $this->rawConnect($remotePeer)->then(function (Peer $peer) use($remotePeer) {
return $peer->outboundHandshake($remotePeer, $this->params);
})->then(function (Peer $peer) {
$reqService = $this->params->getRequiredServices();
if ($reqService != 0) {
if ($reqService != ($peer->getRemoteVersion()->getServices() & $reqService)) {
return new RejectedPromise('peer does not satisfy required services');
}
}
return $peer;
});
}
/**
* @param NetworkAddressInterface $remotePeer
* @param ConnectionParams $params
* @return \React\Promise\Promise|\React\Promise\PromiseInterface
*/
public function outboundHandshake(NetworkAddressInterface $remotePeer, ConnectionParams $params)
{
$deferred = new Deferred();
$awaitVersion = true;
$this->stream->on('close', function () use(&$awaitVersion, $deferred) {
if ($awaitVersion) {
$awaitVersion = false;
$deferred->reject('peer disconnected');
}
});
$this->on(Message::VERSION, function (Peer $peer, Version $version) use($params) {
$this->remoteVersion = $version;
$this->verack();
});
$this->on(Message::VERACK, function () use($deferred) {
if (false === $this->exchangedVersion) {
$this->exchangedVersion = true;
$this->emit('ready', [$this]);
$deferred->resolve($this);
}
});
$this->peerAddress = $remotePeer;
$this->localVersion = $version = $params->produceVersion($this->msgs, $remotePeer);
$this->connectionParams = $params;
$this->send($version);
return $deferred->promise();
}