/// <summary>
/// 新增发布主题
/// </summary>
/// <param name="data"></param>
/// <returns></returns>
public static TopicMessage UnPackNewTopic(byte[] data, int count)
{
TopicMessage message = new TopicMessage();
byte[] tmp = new byte[count - 1];//除去数据标识
Array.Copy(data, 1, tmp, 0, tmp.Length);
Span <byte> bytes = new Span <byte>(tmp);
var lenSP = bytes.Slice(0, 4);
int len = BitConverter.ToInt32(lenSP.ToArray(), 0);
lenSP = bytes.Slice(4, 4);
int topicLen = BitConverter.ToInt32(lenSP.ToArray(), 0);
lenSP = bytes.Slice(8, topicLen);
string topic = Encoding.Default.GetString(lenSP.ToArray());
lenSP = bytes.Slice(8 + topicLen, 8);
long id = BitConverter.ToInt32(lenSP.ToArray(), 0);
lenSP = bytes.Slice(16 + topicLen, count - 1 - 16 - topicLen);
string addr = Encoding.Default.GetString(lenSP.ToArray());
message.Address = addr;
message.NodeId = id;
message.TopicName = topic;
return(message);
}
/// <summary>
/// 解析订阅信息
/// </summary>
/// <param name="data"></param>
/// <returns></returns>
public static TopicMessage UnPackSubscribeMsg(byte[] data)
{
byte[] tmp = new byte[data.Length - 1];
Array.Copy(data, 1, tmp, 0, data.Length - 1);
Span <byte> span = tmp;
var sp = span.Slice(0, 4);
int len = BitConverter.ToInt32(sp.ToArray(), 0);
sp = span.Slice(4, 4);
int topicLen = BitConverter.ToInt32(sp.ToArray(), 0);
sp = span.Slice(8, topicLen);
string topic = Encoding.Default.GetString(sp.ToArray());
sp = span.Slice(8 + topicLen);
string addr = Encoding.Default.GetString(sp.ToArray());
TopicMessage message = new TopicMessage()
{
Address = addr, TopicName = topic
};
return(message);
}