├── MyListener.cs
├── PythonClient.py
└── README.md


/MyListener.cs:
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 1 | using System.Net;
 2 | using System.Net.Sockets;
 3 | using System.Text;
 4 | using UnityEngine;
 5 | using System.Threading;
 6 | 
 7 | public class MyListener : MonoBehaviour
 8 | {
 9 |     Thread thread;
10 |     public int connectionPort = 25001;
11 |     TcpListener server;
12 |     TcpClient client;
13 |     bool running;
14 | 
15 | 
16 |     void Start()
17 |     {
18 |         // Receive on a separate thread so Unity doesn't freeze waiting for data
19 |         ThreadStart ts = new ThreadStart(GetData);
20 |         thread = new Thread(ts);
21 |         thread.Start();
22 |     }
23 | 
24 |     void GetData()
25 |     {
26 |         // Create the server
27 |         server = new TcpListener(IPAddress.Any, connectionPort);
28 |         server.Start();
29 | 
30 |         // Create a client to get the data stream
31 |         client = server.AcceptTcpClient();
32 | 
33 |         // Start listening
34 |         running = true;
35 |         while (running)
36 |         {
37 |             Connection();
38 |         }
39 |         server.Stop();
40 |     }
41 | 
42 |     void Connection()
43 |     {
44 |         // Read data from the network stream
45 |         NetworkStream nwStream = client.GetStream();
46 |         byte[] buffer = new byte[client.ReceiveBufferSize];
47 |         int bytesRead = nwStream.Read(buffer, 0, client.ReceiveBufferSize);
48 | 
49 |         // Decode the bytes into a string
50 |         string dataReceived = Encoding.UTF8.GetString(buffer, 0, bytesRead);
51 |         
52 |         // Make sure we're not getting an empty string
53 |         //dataReceived.Trim();
54 |         if (dataReceived != null && dataReceived != "")
55 |         {
56 |             // Convert the received string of data to the format we are using
57 |             position = ParseData(dataReceived);
58 |             nwStream.Write(buffer, 0, bytesRead);
59 |         }
60 |     }
61 | 
62 |     // Use-case specific function, need to re-write this to interpret whatever data is being sent
63 |     public static Vector3 ParseData(string dataString)
64 |     {
65 |         Debug.Log(dataString);
66 |         // Remove the parentheses
67 |         if (dataString.StartsWith("(") && dataString.EndsWith(")"))
68 |         {
69 |             dataString = dataString.Substring(1, dataString.Length - 2);
70 |         }
71 | 
72 |         // Split the elements into an array
73 |         string[] stringArray = dataString.Split(',');
74 | 
75 |         // Store as a Vector3
76 |         Vector3 result = new Vector3(
77 |             float.Parse(stringArray[0]),
78 |             float.Parse(stringArray[1]),
79 |             float.Parse(stringArray[2]));
80 | 
81 |         return result;
82 |     }
83 | 
84 |     // Position is the data being received in this example
85 |     Vector3 position = Vector3.zero;
86 | 
87 |     void Update()
88 |     {
89 |         // Set this object's position in the scene according to the position received
90 |         transform.position = position;
91 |     }
92 | }


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/PythonClient.py:
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 1 | import socket
 2 | 
 3 | host, port = "127.0.0.1", 25001
 4 | data = "1,2,3"
 5 | 
 6 | # SOCK_STREAM means TCP socket
 7 | sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 8 | 
 9 | try:
10 |     # Connect to the server and send the data
11 |     sock.connect((host, port))
12 |     sock.sendall(data.encode("utf-8"))
13 |     response = sock.recv(1024).decode("utf-8")
14 |     print (response)
15 | 
16 | finally:
17 |     sock.close()


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/README.md:
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1 | # Python-Unity-Socket
2 | Includes a c# script for creating a server in Unity and a python script for creating a client to send data to Unity
3 | 
4 | A brief tutorial for this is available at: https://youtu.be/Dm0CiAiZk14
5 | 


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