Method SendError

src/network/network_server.cpp:359–401

* Send an error to the client, and close its connection. * @param error The error to disconnect for. * @param reason In case of kicking a client, specifies the reason for kicking the client. */

 * @param reason In case of kicking a client, specifies the reason for kicking the client.
 */
NetworkRecvStatus ServerNetworkGameSocketHandler::SendError(NetworkErrorCode error, std::string_view reason)
{
	Debug(net, 9, "client[{}] SendError(): error={}", this->client_id, error);

	auto p = std::make_unique<Packet>(this, PACKET_SERVER_ERROR);

	p->Send_uint8(error);
	if (!reason.empty()) p->Send_string(reason);
	this->SendPacket(std::move(p));

	StringID strid = GetNetworkErrorMsg(error);

	/* Only send when the current client was in game */
	if (this->status >= STATUS_AUTHORIZED) {
		std::string client_name = this->GetClientName();

		Debug(net, 1, "'{}' made an error and has been disconnected: {}", client_name, GetString(strid));

		if (error == NETWORK_ERROR_KICKED && !reason.empty()) {
			NetworkTextMessage(NETWORK_ACTION_KICKED, CC_DEFAULT, false, client_name, reason, strid);
		} else {
			NetworkTextMessage(NETWORK_ACTION_LEAVE, CC_DEFAULT, false, client_name, "", strid);
		}

		for (NetworkClientSocket *new_cs : NetworkClientSocket::Iterate()) {
			if (new_cs->status >= STATUS_AUTHORIZED && new_cs != this) {
				/* Some errors we filter to a more general error. Clients don't have to know the real
				 *  reason a joining failed. */
				if (error == NETWORK_ERROR_NOT_AUTHORIZED || error == NETWORK_ERROR_NOT_EXPECTED || error == NETWORK_ERROR_WRONG_REVISION) {
					error = NETWORK_ERROR_ILLEGAL_PACKET;
				}
				new_cs->SendErrorQuit(this->client_id, error);
			}
		}

		NetworkAdminClientError(this->client_id, error);
	} else {
		Debug(net, 1, "Client {} made an error and has been disconnected: {}", this->client_id, GetString(strid));
	}

	/* The client made a mistake, so drop the connection now! */
	return this->CloseConnection(NETWORK_RECV_STATUS_SERVER_ERROR);
}

/** Send the check for the NewGRFs. */
NetworkRecvStatus ServerNetworkGameSocketHandler::SendNewGRFCheck()