public SocketPack Unpack(Socket socket, IPEndPoint remoteEndPoint, List <byte> buffer, int offset)
{
int head = buffer.FindIndex(offset, b => b == ProtocolHead.Tag);
//未找到协议
if (head == -1)
{
return(new SocketPack
{
Result = AnalysisResult.Empty,
Offset = offset,
Size = buffer.Count - offset
});
}
else
{
int lessSize = buffer.Count - head;
//长度小于协议头
if (lessSize < ProtocolHead.HeadSize)
{
return(new SocketPack
{
Result = AnalysisResult.Half,
Offset = head,
Size = lessSize
});
}
else
{
ProtocolHead protocolHead = new ProtocolHead();
ByteFormatter.Deserialize(protocolHead, buffer, head + 1);
if (lessSize < protocolHead.ContentSize + ProtocolHead.HeadSize)
{
return(new SocketPack
{
Result = AnalysisResult.Half,
Offset = head,
Size = lessSize
});
}
else
{
return(new SocketPack
{
Result = AnalysisResult.Full,
Offset = head,
Size = protocolHead.ContentSize + ProtocolHead.HeadSize,
ProtocolId = protocolHead.Id,
TimeStamp = protocolHead.TimeStamp
});
}
}
}
}
/// <summary>
/// 封包响应协议
/// </summary>
/// <param name="timeStamp">发送时间戳</param>
/// <param name="protocol">响应协议</param>
/// <returns>响应字节流</returns>
public static List <byte> Response(long timeStamp, Protocol protocol)
{
List <byte> content = ByteFormatter.Serialize(protocol);
ProtocolHead head = new ProtocolHead()
{
Id = protocol.Id,
ContentSize = Convert.ToUInt16(content.Count),
TimeStamp = timeStamp
};
List <byte> buffer = ByteFormatter.Serialize(head);
buffer.AddRange(content);
return(buffer);
}
/// <summary>
/// 封包请求协议
/// </summary>
/// <param name="protocol">协议</param>
/// <returns>第一个字段表示请求字节流，第二个字段表示时间戳</returns>
public static Tuple <List <byte>, long> Request(Protocol protocol)
{
List <byte> content = ByteFormatter.Serialize(protocol);
ProtocolHead head = new ProtocolHead()
{
Id = protocol.Id,
ContentSize = Convert.ToUInt16(content.Count),
TimeStamp = TimeStampConvert.ToUtcTimeStamp()
};
List <byte> buffer = ByteFormatter.Serialize(head);
buffer.AddRange(content);
return(new Tuple <List <byte>, long>(buffer, head.TimeStamp));
}