3900d1c665
- Convert constant classes to enum - Rename HAProxyProtocolMessage to HAProxyMessage for simpilicity - Rename HAProxyProtocolDecoder to HAProxyMessageDecoder - Rename HAProxyProtocolCommand to HAProxyCommand - Merge ProxiedProtocolAndFamity, ProxiedAddressFamily, and ProxiedTransportProtocol into HAProxiProxiedProtocol and its inner enums - Overall clean-up
71 lines
2.2 KiB
Java
71 lines
2.2 KiB
Java
/*
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* Copyright 2014 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.haproxy;
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/**
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* The command of an HAProxy proxy protocol header
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*/
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public enum HAProxyCommand {
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/**
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* The LOCAL command represents a connection that was established on purpose by the proxy
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* without being relayed.
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*/
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LOCAL(HAProxyConstants.COMMAND_LOCAL_BYTE),
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/**
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* The PROXY command represents a connection that was established on behalf of another node,
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* and reflects the original connection endpoints.
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*/
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PROXY(HAProxyConstants.COMMAND_PROXY_BYTE);
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/**
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* The command is specified in the lowest 4 bits of the protocol version and command byte
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*/
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private static final byte COMMAND_MASK = 0x0f;
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private final byte byteValue;
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/**
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* Creates a new instance
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*/
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HAProxyCommand(byte byteValue) {
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this.byteValue = byteValue;
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}
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/**
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* Returns the {@link HAProxyCommand} represented by the lowest 4 bits of the specified byte.
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*
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* @param verCmdByte protocol version and command byte
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*/
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public static HAProxyCommand valueOf(byte verCmdByte) {
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int cmd = verCmdByte & COMMAND_MASK;
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switch ((byte) cmd) {
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case HAProxyConstants.COMMAND_PROXY_BYTE:
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return PROXY;
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case HAProxyConstants.COMMAND_LOCAL_BYTE:
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return LOCAL;
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default:
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throw new IllegalArgumentException("unknown command: " + cmd);
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}
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}
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/**
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* Returns the byte value of this command.
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*/
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public byte byteValue() {
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return byteValue;
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}
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}
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