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 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
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 * Licensed 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
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 *  distributed under the License is distributed on an "AS IS" BASIS,
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package io.undertow.attribute;

import io.undertow.server.HttpServerExchange;

import java.net.InetSocketAddress;

The remote Host address (if resolved)
Author:Stuart Douglas
/** * The remote Host address (if resolved) * * @author Stuart Douglas */
public class RemoteHostAttribute implements ExchangeAttribute { public static final String REMOTE_HOST_NAME_SHORT = "%h"; public static final String REMOTE_HOST = "%{REMOTE_HOST}"; public static final ExchangeAttribute INSTANCE = new RemoteHostAttribute(); private RemoteHostAttribute() { } @Override public String readAttribute(final HttpServerExchange exchange) { final InetSocketAddress sourceAddress = (InetSocketAddress) exchange.getSourceAddress(); return sourceAddress.getHostString(); } @Override public void writeAttribute(final HttpServerExchange exchange, final String newValue) throws ReadOnlyAttributeException { throw new ReadOnlyAttributeException("Remote host", newValue); } public static final class Builder implements ExchangeAttributeBuilder { @Override public String name() { return "Remote host"; } @Override public ExchangeAttribute build(final String token) { if (token.equals(REMOTE_HOST) || token.equals(REMOTE_HOST_NAME_SHORT)) { return RemoteHostAttribute.INSTANCE; } return null; } @Override public int priority() { return 0; } } }