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Java example source code file (DefaultSpdySynStreamFrame.java)

This example Java source code file (DefaultSpdySynStreamFrame.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

associated-to-stream-id, defaultspdyheadersframe, defaultspdysynstreamframe, illegalargumentexception, override, priority, spdysynstreamframe, stringbuilder

The DefaultSpdySynStreamFrame.java Java example source code

/*
 * 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 io.netty.handler.codec.spdy;

import io.netty.util.internal.StringUtil;

/**
 * The default {@link SpdySynStreamFrame} implementation.
 */
public class DefaultSpdySynStreamFrame extends DefaultSpdyHeadersFrame
        implements SpdySynStreamFrame {

    private int associatedStreamId;
    private byte priority;
    private boolean unidirectional;

    /**
     * Creates a new instance.
     *
     * @param streamId           the Stream-ID of this frame
     * @param associatedStreamId the Associated-To-Stream-ID of this frame
     * @param priority           the priority of the stream
     */
    public DefaultSpdySynStreamFrame(int streamId, int associatedStreamId, byte priority) {
        this(streamId, associatedStreamId, priority, true);
    }

    /**
     * Creates a new instance.
     *
     * @param streamId           the Stream-ID of this frame
     * @param associatedStreamId the Associated-To-Stream-ID of this frame
     * @param priority           the priority of the stream
     * @param validateHeaders    validate the header names and values when adding them to the {@link SpdyHeaders}
     */
    public DefaultSpdySynStreamFrame(int streamId, int associatedStreamId, byte priority, boolean validateHeaders) {
        super(streamId, validateHeaders);
        setAssociatedStreamId(associatedStreamId);
        setPriority(priority);
    }

    @Override
    public SpdySynStreamFrame setStreamId(int streamId) {
        super.setStreamId(streamId);
        return this;
    }

    @Override
    public SpdySynStreamFrame setLast(boolean last) {
        super.setLast(last);
        return this;
    }

    @Override
    public SpdySynStreamFrame setInvalid() {
        super.setInvalid();
        return this;
    }

    @Override
    public int associatedStreamId() {
        return associatedStreamId;
    }

    @Override
    public SpdySynStreamFrame setAssociatedStreamId(int associatedStreamId) {
        if (associatedStreamId < 0) {
            throw new IllegalArgumentException(
                    "Associated-To-Stream-ID cannot be negative: " +
                    associatedStreamId);
        }
        this.associatedStreamId = associatedStreamId;
        return this;
    }

    @Override
    public byte priority() {
        return priority;
    }

    @Override
    public SpdySynStreamFrame setPriority(byte priority) {
        if (priority < 0 || priority > 7) {
            throw new IllegalArgumentException(
                    "Priority must be between 0 and 7 inclusive: " + priority);
        }
        this.priority = priority;
        return this;
    }

    @Override
    public boolean isUnidirectional() {
        return unidirectional;
    }

    @Override
    public SpdySynStreamFrame setUnidirectional(boolean unidirectional) {
        this.unidirectional = unidirectional;
        return this;
    }

    @Override
    public String toString() {
        StringBuilder buf = new StringBuilder()
            .append(StringUtil.simpleClassName(this))
            .append("(last: ")
            .append(isLast())
            .append("; unidirectional: ")
            .append(isUnidirectional())
            .append(')')
            .append(StringUtil.NEWLINE)
            .append("--> Stream-ID = ")
            .append(streamId())
            .append(StringUtil.NEWLINE);
        if (associatedStreamId != 0) {
            buf.append("--> Associated-To-Stream-ID = ")
               .append(associatedStreamId())
               .append(StringUtil.NEWLINE);
        }
        buf.append("--> Priority = ")
           .append(priority())
           .append(StringUtil.NEWLINE)
           .append("--> Headers:")
           .append(StringUtil.NEWLINE);
        appendHeaders(buf);

        // Remove the last newline.
        buf.setLength(buf.length() - StringUtil.NEWLINE.length());
        return buf.toString();
    }
}

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