58 lines
2.1 KiB
Java
58 lines
2.1 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2021 ViaVersion and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.viaversion.viaversion.api.protocol;
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import it.unimi.dsi.fastutil.ints.IntSortedSet;
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public interface ServerProtocolVersion {
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/**
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* Returns the lowest supported protocol version by this server.
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* This and {@link #highestSupportedVersion()} should only differ on proxy servers supporting multiple versions.
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*
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* @return lowest supported protocol version
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*/
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int lowestSupportedVersion();
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/**
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* Returns the lowest supported protocol version by this server.
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* This and {@link #lowestSupportedVersion()} should only differ on proxy servers supporting multiple versions.
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*
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* @return highest supported protocol version
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*/
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int highestSupportedVersion();
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/**
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* Returns a sorted set of all supported protocol version by this server.
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* For non-proxy servers, this should return a singleton set.
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*
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* @return sorted set of supported protocol versions
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*/
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IntSortedSet supportedVersions();
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/**
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* Returns true if the actual protocol version has not yet been identified.
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* In that case, all methods above will returns -1.
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*
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* @return true if set, false if unknown (yet)
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*/
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default boolean isKnown() {
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return lowestSupportedVersion() != -1 && highestSupportedVersion() != -1;
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}
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}
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