containsParameter('peer')) { return $rpcRequest->produceError(StandardError::RPC_INVALID_ARGUMENTS, 'Missing required peer parameter'); } try { $address = PeerAddress::fromAddress($rpcRequest->getParameter('peer')); } catch(InvalidArgumentException $e) { throw new StandardException('Invalid peer address', StandardError::RPC_INVALID_ARGUMENTS, $e); } try { $peer = $request->getPeer(); return $rpcRequest->produceResponse(ContactManager::isContact($peer, $address)); } catch (DatabaseOperationException $e) { throw new StandardException('Failed to check if the contact exists', StandardError::INTERNAL_SERVER_ERROR, $e); } } }