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 /*
  * JBoss, Home of Professional Open Source.
  * 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.server.handlers.encoding;
Handler that serves as the basis for content encoding implementations.

Encoding handlers are added as delegates to this handler, with a specified server side priority.

If a request comes in with no q value then then server will pick the handler with the highest priority as the encoding to use, otherwise the q value will be used to determine the correct handler.

If no handler matches then the identity encoding is assumed. If the identity encoding has been specifically disallowed due to a q value of 0 then the handler will set the response code 406 (Not Acceptable) and return.

Author(s):
Stuart Douglas
public class EncodingHandler implements HttpHandler {
    private volatile HttpHandler next = .;
    public EncodingHandler(final HttpHandler nextContentEncodingRepository contentEncodingRepository) {
        this. = next;
        this. = contentEncodingRepository;
    }
    public EncodingHandler(ContentEncodingRepository contentEncodingRepository) {
        this. = contentEncodingRepository;
    }
    @Override
    public void handleRequest(final HttpServerExchange exchangethrows Exception {
        if (encodings == null) {
            .handleRequest(exchange);
        } else if (encodings.isNoEncodingsAllowed()) {
            .handleRequest(exchange);
        } else {
            exchange.addResponseWrapper(encodings);
            exchange.putAttachment(.encodings);
            .handleRequest(exchange);
        }
    }
    public HttpHandler getNext() {
        return ;
    }
    public EncodingHandler setNext(final HttpHandler next) {
        Handlers.handlerNotNull(next);
        this. = next;
        return this;
    }
    public HttpHandler getNoEncodingHandler() {
        return ;
    }
    public EncodingHandler setNoEncodingHandler(HttpHandler noEncodingHandler) {
        Handlers.handlerNotNull(noEncodingHandler);
        this. = noEncodingHandler;
        return this;
    }
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