/// <summary>
/// 构建动态加密包，此包要分三次发给嵌入式
/// </summary>
/// <returns></returns>
public static List <byte[]> BuildEncryptPackages(List <byte> moduleAddr, bool isUpdateEncryptTable = false, byte aimType = (byte)SmEncryptFrame.AimType)
{
List <byte[]> packages = new List <byte[]>();
if (moduleAddr.Count != (int)SmEncryptIndex.ModuleAddrCount)
{
throw new Exception("加密包module addr 长度不对");
}
//更新表
if (isUpdateEncryptTable)
{
SmEncrypt.UpdateEncriptyTable();
}
List <byte> tables = SmEncrypt.GetEncryptTable();
//对加密表进行切分
//0-84
List <byte> firstTable = tables.GetRange(0, 85);
//85 - 169
List <byte> secondTable = tables.GetRange(85, 85);
//170-255
List <byte> thirdTable = tables.GetRange(170, 86);
//切分好的表添加到一个表中好遍历
List <List <byte> > tableList = new List <List <byte> >();
tableList.Add(firstTable);
tableList.Add(secondTable);
tableList.Add(thirdTable);
int completedLen = 0;
//将切分的包构建成package
tableList.ForEach(data => {
byte[] encryptPackage = buildEncryptPackage(data, moduleAddr, completedLen, aimType);
completedLen += data.Count;
packages.Add(encryptPackage);
});
return(packages);
}
/// <summary>
/// 缓存数据==>可用的包
/// 对ProcessBuffer函数进行了极大的优化
/// 目前效率 250次循环 61ms 50个单元单元测试包
/// </summary>
/// <param name="buffer"></param>
/// <param name="offset"></param>
/// <param name="count"></param>
/// <returns></returns>
private Dictionary <SmPackageType, List <byte[]> > processBuffer2(byte[] buffer, int offset, int count)
{
//解密
buffer = SmEncrypt.DecodeArray(buffer, offset, count);
Dictionary <SmPackageType, List <byte[]> > packageDictionary = new Dictionary <SmPackageType, List <byte[]> >();
try {
//fixed: 2018-01-04
// 某些机台这里会抛异常
socketBuffer.WriteBuffer(buffer, offset, count);
} catch (Exception e) {
//Console.WriteLine("DynamicBuffer WriteBuffer 异常" + e.Message);
Logger.Error($"DynamicBuffer WriteBuffer 异常: DataCount: {socketBuffer.GetDataCount()},BufferSize: {socketBuffer.BufferSize}", e);
//清空缓存
socketBuffer.Clear();
}
List <byte[]> normalPackages = new List <byte[]>();
List <byte[]> heartbeatPackages = new List <byte[]>();
List <byte[]> clientReplyCmdPackages = new List <byte[]>();
SmPackageType smPackageType = SmPackageType.ErrorPackage;
int startFrameCount = 0;
for (int i = offset; i < offset + socketBuffer.GetDataCount(); ++i)
{
//检验帧头
if (socketBuffer[i] == (byte)SmFrame.Start)
{
++startFrameCount;
//找到长度帧
byte[] datalenBytes = { socketBuffer[i + (int)SmIndex.TotalLenStart], socketBuffer[(int)SmIndex.TotalLenStart + 1 + i] };
datalenBytes = datalenBytes.Reverse().ToArray();
//数据长度（该位后面（不包括结束符,CRC）的长度）
Int16 propLen = BitConverter.ToInt16(datalenBytes, 0);
//整个包长度
int packageLen =
+(int)SmIndex.TotalLenStart
+ (int)SmIndex.TotalLenCount
+ propLen
+ 3;
int index = i + packageLen - 1;
//加上长度是否为结束帧
if (propLen > 0 && index < socketBuffer.GetDataCount() &&
socketBuffer[index] == (byte)SmFrame.End)
{
//获取包类型
smPackageType = SmPackage.GetPackageType(socketBuffer.Buffer, i, packageLen);
if (smPackageType != SmPackageType.ErrorPackage)
{
byte[] bytes = copyPackageAndClearOrigin2(ref i, packageLen);
if (smPackageType == SmPackageType.ParamPackage)
{
normalPackages.Add(bytes);
}
else if (smPackageType == SmPackageType.HeartbeatPackage)
{
heartbeatPackages.Add(bytes);
}
else if (smPackageType == SmPackageType.ClientReplyCmd)
{
clientReplyCmdPackages.Add(bytes);
}
}
}
else
{
////缓存中出现了超过1000个字节
////全删掉
if (startFrameCount >= 1000)
{
//socketBuffer.Clear(0, i);
Console.WriteLine("缓存中超过1000个坏包");
}
}
}
}
//存包
packageDictionary[SmPackageType.ParamPackage] = normalPackages;
packageDictionary[SmPackageType.HeartbeatPackage] = heartbeatPackages;
packageDictionary[SmPackageType.ClientReplyCmd] = clientReplyCmdPackages;
return(packageDictionary);
}
