package com.zy.common.HslCommunication.Core.IMessage;
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public class S7Message implements INetMessage {
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// 头字节
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private byte[] HeadBytes = null;
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// 消息内容字节
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private byte[] ContentBytes = null;
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// 发送的消息
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private byte[] SendBytes = null;
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/**
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* 消息头的指令长度
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*/
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public int ProtocolHeadBytesLength(){
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return 4;
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}
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/**
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* 从当前的头子节文件中提取出接下来需要接收的数据长度
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* @return 返回接下来的数据内容长度
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*/
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public int GetContentLengthByHeadBytes(){
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if(HeadBytes == null) return 0;
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return (HeadBytes[2] & 0xff) * 256 + (HeadBytes[3] & 0xff) - 4;
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}
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/**
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* 检查头子节的合法性
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* @param token 特殊的令牌,有些特殊消息的验证
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* @return 是否合法的验证
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*/
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public boolean CheckHeadBytesLegal(byte[] token) {
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if(HeadBytes == null) return false;
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return HeadBytes[0] == 0x03 && HeadBytes[1] == 0x00;
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}
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/**
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* 获取头子节里的消息标识
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*/
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public int GetHeadBytesIdentity(){
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return 0;
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}
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@Override
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public byte[] getHeadBytes() {
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return HeadBytes;
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}
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@Override
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public byte[] getContentBytes() {
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return ContentBytes;
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}
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@Override
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public byte[] getSendBytes() {
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return SendBytes;
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}
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public void setHeadBytes(byte[] headBytes){
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HeadBytes = headBytes;
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}
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public void setContentBytes(byte[] contentBytes){
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ContentBytes = contentBytes;
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}
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public void setSendBytes(byte[] sendBytes){
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SendBytes = sendBytes;
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}
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}
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