C++ (Cpp) ContextPtr::writeMessage Examples

Example #1

File: P2pNode.cpp Project: dinastyoffreedom/dinastycoin

bool P2pNode::fetchPeerList(ContextPtr connection) {
  try {
    COMMAND_HANDSHAKE::request request{ getNodeData(), getGenesisPayload() };
    COMMAND_HANDSHAKE::response response;

    OperationTimeout<P2pContext> timeout(m_dispatcher, *connection, m_cfg.getHandshakeTimeout());

    connection->writeMessage(makeRequest(COMMAND_HANDSHAKE::ID, LevinProtocol::encode(request)));

    LevinProtocol::Command cmd;
    if (!connection->readCommand(cmd)) {
      throw std::runtime_error("Connection closed unexpectedly");
    }

    if (!cmd.isResponse || cmd.command != COMMAND_HANDSHAKE::ID) {
      throw std::runtime_error("Received unexpected reply");
    }

    if (!LevinProtocol::decode(cmd.buf, response)) {
      throw std::runtime_error("Invalid reply format");
    }

    if (response.node_data.network_id != request.node_data.network_id) {
      logger(ERROR) << *connection << "COMMAND_HANDSHAKE failed, wrong network: " << response.node_data.network_id;
      return false;
    }

    return handleRemotePeerList(response.local_peerlist, response.node_data.local_time);
  } catch (std::exception& e) {
    logger(INFO) << *connection << "Failed to obtain peer list: " << e.what();
  }

  return false;
}