63 lines
2.5 KiB
Java
63 lines
2.5 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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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package com.viaversion.viaversion.api.protocol.version;
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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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