com.mpush.api.protocol.UDPPacket.java Source code

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Here is the source code for com.mpush.api.protocol.UDPPacket.java

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/*
 * (C) Copyright 2015-2016 the original author or authors.
 *
 * 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.
 *
 * Contributors:
 *     ohun@live.cn ()
 */

package com.mpush.api.protocol;

import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.socket.DatagramPacket;

import java.net.InetSocketAddress;

import static com.mpush.api.protocol.Command.HEARTBEAT;

/**
 * Created by ohun on 16/10/21.
 *
 * @author ohun@live.cn ()
 */
public final class UDPPacket extends Packet {
    private InetSocketAddress address;

    public UDPPacket(byte cmd, InetSocketAddress sender) {
        super(cmd);
        this.address = sender;
    }

    public UDPPacket(Command cmd, int sessionId, InetSocketAddress sender) {
        super(cmd, sessionId);
        this.address = sender;
    }

    public UDPPacket(byte cmd) {
        super(cmd);
    }

    public UDPPacket(Command cmd) {
        super(cmd);
    }

    public UDPPacket(Command cmd, int sessionId) {
        super(cmd, sessionId);
    }

    @Override
    public InetSocketAddress sender() {
        return address;
    }

    @Override
    public void setRecipient(InetSocketAddress recipient) {
        this.address = recipient;
    }

    @Override
    public Packet response(Command command) {
        return new UDPPacket(command, sessionId, address);
    }

    @Override
    public Object toFrame(Channel channel) {
        int capacity = cmd == HEARTBEAT.cmd ? 1 : HEADER_LEN + getBodyLength();
        ByteBuf out = channel.alloc().buffer(capacity, capacity);
        encodePacket(this, out);
        return new DatagramPacket(out, sender());
    }
}