io.netty.handler.codec.haproxy.HAProxyTLV Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

There is a newer version: 35.0.0.Beta1

Show newest version

/*
 * Copyright 2016 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:
 *
 *   http://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 io.netty.buffer.ByteBuf;
import io.netty.buffer.DefaultByteBufHolder;

import static io.netty.util.internal.ObjectUtil.*;

/**
 * A Type-Length Value (TLV vector) that can be added to the PROXY protocol
 * to include additional information like SSL information.
 *
 * @see HAProxySSLTLV
 */
public class HAProxyTLV extends DefaultByteBufHolder {

    private final Type type;
    private final byte typeByteValue;

    /**
     * The registered types a TLV can have regarding the PROXY protocol 1.5 spec
     */
    public enum Type {
        PP2_TYPE_ALPN,
        PP2_TYPE_AUTHORITY,
        PP2_TYPE_SSL,
        PP2_TYPE_SSL_VERSION,
        PP2_TYPE_SSL_CN,
        PP2_TYPE_NETNS,
        /**
         * A TLV type that is not officially defined in the spec. May be used for nonstandard TLVs
         */
        OTHER;

        /**
         * Returns the {@link Type} for a specific byte value as defined in the PROXY protocol 1.5 spec
         * 
         * If the byte value is not an official one, it will return {@link Type#OTHER}.
         *
         * @param byteValue the byte for a type
         *
         * @return the {@link Type} of a TLV
         */
        public static Type typeForByteValue(final byte byteValue) {
            switch (byteValue) {
            case 0x01:
                return PP2_TYPE_ALPN;
            case 0x02:
                return PP2_TYPE_AUTHORITY;
            case 0x20:
                return PP2_TYPE_SSL;
            case 0x21:
                return PP2_TYPE_SSL_VERSION;
            case 0x22:
                return PP2_TYPE_SSL_CN;
            case 0x30:
                return PP2_TYPE_NETNS;
            default:
                return OTHER;
            }
        }
    }

    /**
     * Creates a new HAProxyTLV
     *
     * @param type the {@link Type} of the TLV
     * @param typeByteValue the byteValue of the TLV. This is especially important if non-standard TLVs are used
     * @param content the raw content of the TLV
     */
    HAProxyTLV(final Type type, final byte typeByteValue, final ByteBuf content) {
        super(content);
        this.type = checkNotNull(type, "type");
        this.typeByteValue = typeByteValue;
    }

    /**
     * Returns the {@link Type} of this TLV
     */
    public Type type() {
        return type;
    }

    /**
     * Returns the type of the TLV as byte
     */
    public byte typeByteValue() {
        return typeByteValue;
    }

    @Override
    public HAProxyTLV copy() {
        return replace(content().copy());
    }

    @Override
    public HAProxyTLV duplicate() {
        return replace(content().duplicate());
    }

    @Override
    public HAProxyTLV retainedDuplicate() {
        return replace(content().retainedDuplicate());
    }

    @Override
    public HAProxyTLV replace(ByteBuf content) {
        return new HAProxyTLV(type, typeByteValue, content);
    }

    @Override
    public HAProxyTLV retain() {
        super.retain();
        return this;
    }

    @Override
    public HAProxyTLV retain(int increment) {
        super.retain(increment);
        return this;
    }

    @Override
    public HAProxyTLV touch() {
        super.touch();
        return this;
    }

    @Override
    public HAProxyTLV touch(Object hint) {
        super.touch(hint);
        return this;
    }
}