HAProxyProxiedProtocol.java — netty Source File

Source Code

/*
 * Copyright 2014 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.handler.codec.haproxy;

import static io.netty.handler.codec.haproxy.HAProxyConstants.*;

/**
 * A protocol proxied by HAProxy which is represented by its transport protocol and address family.
 */
public enum HAProxyProxiedProtocol {
    /**
     * The UNKNOWN represents a connection which was forwarded for an unknown protocol and an unknown address family.
     */
    UNKNOWN(TPAF_UNKNOWN_BYTE, AddressFamily.AF_UNSPEC, TransportProtocol.UNSPEC),
    /**
     * The TCP4 represents a connection which was forwarded for an IPv4 client over TCP.
     */
    TCP4(TPAF_TCP4_BYTE, AddressFamily.AF_IPv4, TransportProtocol.STREAM),
    /**
     * The TCP6 represents a connection which was forwarded for an IPv6 client over TCP.
     */
    TCP6(TPAF_TCP6_BYTE, AddressFamily.AF_IPv6, TransportProtocol.STREAM),
    /**
     * The UDP4 represents a connection which was forwarded for an IPv4 client over UDP.
     */
    UDP4(TPAF_UDP4_BYTE, AddressFamily.AF_IPv4, TransportProtocol.DGRAM),
    /**
     * The UDP6 represents a connection which was forwarded for an IPv6 client over UDP.
     */
    UDP6(TPAF_UDP6_BYTE, AddressFamily.AF_IPv6, TransportProtocol.DGRAM),
    /**
     * The UNIX_STREAM represents a connection which was forwarded for a UNIX stream socket.
     */
    UNIX_STREAM(TPAF_UNIX_STREAM_BYTE, AddressFamily.AF_UNIX, TransportProtocol.STREAM),
    /**
     * The UNIX_DGRAM represents a connection which was forwarded for a UNIX datagram socket.
     */
    UNIX_DGRAM(TPAF_UNIX_DGRAM_BYTE, AddressFamily.AF_UNIX, TransportProtocol.DGRAM);

    private final byte byteValue;
    private final AddressFamily addressFamily;
    private final TransportProtocol transportProtocol;

    /**
     * Creates a new instance.
     */
    HAProxyProxiedProtocol(
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