io.undertow.attribute.LocalPortAttribute Maven / Gradle / Ivy
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* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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
*
* 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.undertow.attribute;
import java.net.InetSocketAddress;
import io.undertow.server.HttpServerExchange;
/**
* The local port
*
* @author Stuart Douglas
*/
public class LocalPortAttribute implements ExchangeAttribute {
public static final String LOCAL_PORT_SHORT = "%p";
public static final String LOCAL_PORT = "%{LOCAL_PORT}";
public static final ExchangeAttribute INSTANCE = new LocalPortAttribute();
private LocalPortAttribute() {
}
@Override
public String readAttribute(final HttpServerExchange exchange) {
InetSocketAddress localAddress = (InetSocketAddress) exchange.getConnection().getLocalAddress();
return Integer.toString(localAddress.getPort());
}
@Override
public void writeAttribute(final HttpServerExchange exchange, final String newValue) throws ReadOnlyAttributeException {
throw new ReadOnlyAttributeException("Local port", newValue);
}
public static final class Builder implements ExchangeAttributeBuilder {
@Override
public String name() {
return "Local Port";
}
@Override
public ExchangeAttribute build(final String token) {
if (token.equals(LOCAL_PORT) || token.equals(LOCAL_PORT_SHORT)) {
return LocalPortAttribute.INSTANCE;
}
return null;
}
@Override
public int priority() {
return 0;
}
}
}