public void Connect(string notif_ip, int notif_port)
{
//与和发送方相似的方法建立一个socket
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, notif_port);
//任何监听端口为4567的IP都将收到数据
IPAddress ip = IPAddress.Parse(notif_ip);
if (ip.AddressFamily == AddressFamily.InterNetwork)
{
s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
}
else if (ip.AddressFamily == AddressFamily.InterNetworkV6)
{
s = new Socket(AddressFamily.InterNetworkV6, SocketType.Dgram, ProtocolType.Udp);
}
s.SetSocketOption(SocketOptionLevel.IP,
SocketOptionName.AddMembership,
new MulticastOption(ip, IPAddress.Any));
s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
s.Bind(ipep);
try
{
EndPoint tempRemoteEP = (EndPoint)ipep;
StateObjectPN so2 = new StateObjectPN();
so2.workSocket = s;
s.BeginReceiveFrom(so2.buffer, 0, StateObjectPN.BUFFER_SIZE, 0, ref tempRemoteEP,
new AsyncCallback(Read_Callback), so2);
}
catch (Exception e)
{
LogHelper.ErrorLog(e);
}
}
void Read_Callback(IAsyncResult ar)
{
StateObjectPN so = (StateObjectPN)ar.AsyncState;
Socket s = so.workSocket;
EndPoint tempRemoteEp = s.LocalEndPoint;
try
{
int read = s.EndReceive(ar);
so.sb.Append(Encoding.ASCII.GetString(so.buffer, 0, read));
if (read == so.buffer.Length)
{
s.BeginReceiveFrom(so.buffer, 0, StateObjectPN.BUFFER_SIZE, 0, ref tempRemoteEp,
new AsyncCallback(Read_Callback), so);
return;
}
byte[] receive_data = Encoding.Default.GetBytes(so.sb.ToString());
int structSize = Marshal.SizeOf(typeof(NETPACK_BASEHEAD_APPLICATION_VER1));
byte[] byteMsg = new byte[structSize];
Array.Copy(receive_data, 64, byteMsg, 0, structSize);
NETPACK_BASEHEAD_APPLICATION_VER1 vr = (NETPACK_BASEHEAD_APPLICATION_VER1)Common.BytesToStruct(byteMsg, typeof(NETPACK_BASEHEAD_APPLICATION_VER1));
byte[] byteNetMessage = new byte[Marshal.SizeOf(typeof(_TAG_NETPACK_MESSAGE))];
Array.Copy(receive_data, 48, byteNetMessage, 0, 16);
_TAG_NETPACK_MESSAGE message = (_TAG_NETPACK_MESSAGE)Common.BytesToStruct(byteNetMessage, typeof(_TAG_NETPACK_MESSAGE));
byte[] byteData = new byte[vr._datasize];
Array.Copy(receive_data, 64 + structSize, byteData, 0, byteData.Length);
string json = Encoding.Default.GetString(byteData);
JObject jo = JObject.Parse(json);
if (machine_id == jo["ParamChange"]["MachineID"].ToString())
{
if (last_change_id != jo["ParamChange"]["ChangeID"].ToString())
{
last_change_id = jo["ParamChange"]["ChangeID"].ToString();
FuncNotifier();
}
}
}
catch (System.Exception ex)
{
LogHelper.ErrorLog(ex);
}
finally
{
so.sb.Clear();
s.BeginReceiveFrom(so.buffer, 0, StateObjectPN.BUFFER_SIZE, 0, ref tempRemoteEp,
new AsyncCallback(Read_Callback), so);
}
}
