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HTTP/2 for Netty

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/*
 * Copyright 2015 Twitter, Inc.
 *
 * 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 com.twitter.http2;

import io.netty.handler.codec.http.DefaultHttpResponse;
import io.netty.handler.codec.http.HttpContent;
import io.netty.handler.codec.http.HttpResponse;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.handler.codec.http.HttpVersion;
import io.netty.handler.codec.http.LastHttpContent;
import io.netty.util.concurrent.Future;

/**
 * An {@link HttpResponse} that adds content streaming.
 */
public class StreamedHttpResponse extends HttpResponseProxy implements StreamedHttpMessage {

    private Pipe pipe = new Pipe();

    public StreamedHttpResponse(HttpVersion version, HttpResponseStatus status) {
        this(new DefaultHttpResponse(version, status));
    }

    public StreamedHttpResponse(HttpResponse response) {
        super(response);
    }

    @Override
    public Pipe getContent() {
        return pipe;
    }

    @Override
    public Future addContent(HttpContent content) {
        Future future = pipe.send(content);
        if (content instanceof LastHttpContent) {
            pipe.close();
        }
        return future;
    }
}