/// <summary>
/// 广播客户端信息
/// </summary>
public void UPDSendMessage(object message)
{
UdpClient udpClient = null;
try
{
udpClient = new UdpClient();
var byteData = message is byte[] ? message as byte[] : StructHelper.SerializeObject(message);
//先处理发送的数据，加上一字节头+四字节长度
var msgBuffer = new byte[byteData.Length + 5];
msgBuffer[0] = Preamble;
msgBuffer[1] = (byte)(byteData.Length >> 24);
msgBuffer[2] = (byte)(byteData.Length >> 16);
msgBuffer[3] = (byte)(byteData.Length >> 8);
msgBuffer[4] = (byte)byteData.Length;
for (var i = 0; i < byteData.Length; i++)
{
msgBuffer[i + 5] = byteData[i];
}
udpClient.Send(msgBuffer, msgBuffer.Length, ServerAddress);
}
catch (Exception ex)
{
OnError(ex.Message, null);
}
finally
{
if (udpClient != null)
{
udpClient.Close();
}
}
}
/// <summary>
/// 构造初始化图像流
/// </summary>
public RawImage(Bitmap image)
{
if (image != null)
{
width = image.Width;
height = image.Height;
format = image.PixelFormat;
ByteData = StructHelper.ImageRawData(image);
}
}
/// <summary>
/// 创建SQL参数
/// </summary>
internal static DbParameter AddParameter(string column, object value, Type type, Type ptype)
{
var param = (DbParameter)Activator.CreateInstance(ptype);
param.ParameterName = string.Format("@{0}", column);
switch (type.Name)
{
case nameof(DateTime):
var time = (DateTime)value;
if (TConfig.IUtcTime)
{
time = time.ToUniversalTime();
}
if (time == DateTime.MinValue)
{
param.Value = DBNull.Value;
}
else
{
param.Value = time;
}
break;
case nameof(Image):
case nameof(Bitmap):
param.Value = StructHelper.SerializeImage((Image)value);
param.DbType = DbType.Binary;
break;
case nameof(String):
if ((string)value == string.Empty)
{
param.Value = DBNull.Value;
}
else
{
param.Value = value;
}
break;
default:
param.Value = value;
break;
}
if (param.Value == null)
{
param.Value = DBNull.Value;
}
return(param);
}
/// <summary>
/// 反序列化并处理消息
/// </summary>
private void HandleMessage(byte[] buffer, IPEndPoint ipAddress)
{
object message;
try
{
message = StructHelper.DeserializeObject(buffer);
}
catch (Exception ex)
{
ex.Log();
message = buffer;
}
OnMessage(message, ipAddress);
}