com.generallycloud.baseio.codec.protobase.SessionIdProtobaseProtocolDecoder Maven / Gradle / Ivy
/*
* Copyright 2015-2017 GenerallyCloud.com
*
* 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.generallycloud.baseio.codec.protobase;
import java.io.IOException;
import com.generallycloud.baseio.buffer.ByteBuf;
import com.generallycloud.baseio.buffer.ByteBufAllocator;
import com.generallycloud.baseio.codec.protobase.future.SessionIdProtobaseBinaryFutureImpl;
import com.generallycloud.baseio.codec.protobase.future.SessionIdProtobaseFutureImpl;
import com.generallycloud.baseio.component.SocketSession;
import com.generallycloud.baseio.protocol.ChannelFuture;
/**
*
*
* B0：
* +---------------------------------------------------------------------+
* | |
* + - - - - - - - - +
* | 0 1 2 3 4 5 6 7 |
* + - - - - - - - - +
* | message | has | is | |
* | type | binary|broadcast| |
* +---------------------------------------------------------------------+
*
* B0:0-1 : 报文类型 [0=UNKONW,1=PACKET,2=BEAT.PING,3=BEAT.PONG]
* B0:2 : 推送类型 [0=PUSH,1=BRODCAST]
* B0:3 : 是否带有二进制数据[1=true,0=false]
* B0:4-7 : 预留
* B1 : future name length
* B4 : future id
* B4 : session id
* B2 ：text length
* B4 ：binary length //FIXME 是否应该设置为两字节？
*
*
*/
public class SessionIdProtobaseProtocolDecoder extends ProtobaseProtocolDecoder {
public static final int PROTOCOL_HEADER_WITH_BINARY = 16;
public static final int PROTOCOL_HEADER_NO_BINARY = 12;
public SessionIdProtobaseProtocolDecoder(int limit) {
super(limit);
}
@Override
protected ChannelFuture newChannelReadFutureNoBinary(SocketSession session,
ByteBufAllocator allocator, byte b) throws IOException {
ByteBuf buf = allocator.allocate(PROTOCOL_HEADER_NO_BINARY - 1);
return new SessionIdProtobaseFutureImpl(session, buf, isBroadcast(b));
}
@Override
protected ChannelFuture newChannelReadFutureWithBinary(SocketSession session,
ByteBufAllocator allocator, byte b) throws IOException {
ByteBuf buf = allocator.allocate(PROTOCOL_HEADER_WITH_BINARY - 1);
return new SessionIdProtobaseBinaryFutureImpl(session, buf, limit, isBroadcast(b));
}
}