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The Netty project is an effort to provide an asynchronous event-driven network application framework and tools for rapid development of maintainable high performance and high scalability protocol servers and clients. In other words, Netty is a NIO client server framework which enables quick and easy development of network applications such as protocol servers and clients. It greatly simplifies and streamlines network programming such as TCP and UDP socket server.

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/*
 * Copyright 2013 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 org.jboss.netty.handler.codec.spdy;

import org.jboss.netty.util.internal.StringUtil;

/**
 * The default {@link SpdyGoAwayFrame} implementation.
 */
public class DefaultSpdyGoAwayFrame implements SpdyGoAwayFrame {

    private int lastGoodStreamId;
    private SpdySessionStatus status;

    /**
     * Creates a new instance.
     *
     * @param lastGoodStreamId the Last-good-stream-ID of this frame
     */
    public DefaultSpdyGoAwayFrame(int lastGoodStreamId) {
        this(lastGoodStreamId, 0);
    }

    /**
     * Creates a new instance.
     *
     * @param lastGoodStreamId the Last-good-stream-ID of this frame
     * @param statusCode       the Status code of this frame
     */
    public DefaultSpdyGoAwayFrame(int lastGoodStreamId, int statusCode) {
        this(lastGoodStreamId, SpdySessionStatus.valueOf(statusCode));
    }

    /**
     * Creates a new instance.
     *
     * @param lastGoodStreamId the Last-good-stream-ID of this frame
     * @param status           the status of this frame
     */
    public DefaultSpdyGoAwayFrame(int lastGoodStreamId, SpdySessionStatus status) {
        setLastGoodStreamId(lastGoodStreamId);
        setStatus(status);
    }

    public int getLastGoodStreamId() {
        return lastGoodStreamId;
    }

    public void setLastGoodStreamId(int lastGoodStreamId) {
        if (lastGoodStreamId < 0) {
            throw new IllegalArgumentException("Last-good-stream-ID"
                    + " cannot be negative: " + lastGoodStreamId);
        }
        this.lastGoodStreamId = lastGoodStreamId;
    }

    public SpdySessionStatus getStatus() {
        return status;
    }

    public void setStatus(SpdySessionStatus status) {
        this.status = status;
    }

    @Override
    public String toString() {
        StringBuilder buf = new StringBuilder();
        buf.append(getClass().getSimpleName());
        buf.append(StringUtil.NEWLINE);
        buf.append("--> Last-good-stream-ID = ");
        buf.append(getLastGoodStreamId());
        buf.append(StringUtil.NEWLINE);
        buf.append("--> Status: ");
        buf.append(getStatus().toString());
        return buf.toString();
    }
}