/* * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion * Copyright (C) 2016-2023 ViaVersion and contributors * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.viaversion.viaversion.api.connection; import org.checkerframework.checker.nullness.qual.Nullable; import java.util.Map; import java.util.Set; import java.util.UUID; /** * Handles injected UserConnections */ public interface ConnectionManager { /** * Returns if Via injected into this player connection. * * @param playerId player uuid * @return true if the player is handled by Via */ boolean isClientConnected(UUID playerId); /** * Frontend connections will have the UUID stored. Override this if your platform isn't always frontend. * UUIDs can't be duplicate between frontend connections. * * @return true if the user is a frontend connection */ default boolean isFrontEnd(UserConnection connection) { return !connection.isClientSide(); } /** * Returns the frontend UserConnection from the player connected to this proxy server * Returns null when there isn't a server or connection was not found * When ViaVersion is reloaded, this method may not return some players. * May not return ProtocolSupport players. *
* Note that connections are removed as soon as their channel is closed, * so avoid using this method during player quits for example. * * @return frontend UserConnection of the player connected to this proxy server */ @Nullable UserConnection getConnectedClient(UUID clientIdentifier); /** * Returns the UUID from the frontend connection to this proxy server * Returns null when there isn't a server or this connection isn't frontend or it doesn't have an id * When ViaVersion is reloaded, this method may not return some players. * May not return ProtocolSupport players. *
* Note that connections are removed as soon as their channel is closed,
* so avoid using this method during player quits for example.
*
* @return UUID of the frontend connection to this proxy server
*/
@Nullable UUID getConnectedClientId(UserConnection connection);
/**
* Returns all UserConnections which are registered
* May contain duplicated UUIDs on multiple ProtocolInfo.
* May contain frontend, backend and/or client-sided connections.
* When ViaVersion is reloaded, this method may not return some players.
* May not contain ProtocolSupport players.
*
* @return connected UserConnections
*/
Set