Интересно, пытаетесь ли вы вызвать API Unity из другого потока.
Может быть, это поможет.
using UnityEngine;
using System.Net.Sockets;
using System.Net;
using System.Text;
using System;
public class UDPRT: ScriptableObject {
static public string ReceivedMsg; // INPUT DATA
static private UdpClient udpc;
static IPEndPoint IP;
static private object obj;
static private AsyncCallback AC;
static byte[] DATA;
public static UDPRT CreateInstance(int Port) // RECEVE UDP
{
IP = new IPEndPoint(IPAddress.Any, Port);
udpc = new UdpClient(Port);
AC = new AsyncCallback(ReceiveIt);
StartUdpReceive();
return ScriptableObject.CreateInstance < UDPRT > ();
}
public static UDPRT CreateInstance(int Port, string Host, string msg) // SEND UDP
{
udpc = new UdpClient(Host, Port);
AC = new AsyncCallback(SendIt);
byte[] data = Encoding.UTF8.GetBytes(msg);
udpc.BeginSend(data, data.Length, AC, obj);
return ScriptableObject.CreateInstance < UDPRT > ();
}
static void ReceiveIt(IAsyncResult result) {
DATA = (udpc.EndReceive(result, ref IP));
Debug.Log(Encoding.UTF8.GetString(DATA));
ReceivedMsg = Encoding.UTF8.GetString(DATA);
StartUdpReceive();
}
static void SendIt(IAsyncResult result) {
udpc.EndSend(result);
}
static void StartUdpReceive() {
udpc.BeginReceive(AC, obj);
}
}