As the documentation says, The Unity scripting API does not expose direct WebSocket access itself. But you can access the native web browser API by calling JavaScript from Unity C# scripts.

1. Create a JavaScript file which defines the functions you need and implements them by calling native browser functionality.
2. Give it the file extension .jslib
3. Put it into the directiory Assets/Plugins of your Unity project
4. Import them into a C# script by defining a class-level method with the prefix [DllImport("__Internal")] private static extern.

Example for a websocket.jslib:

mergeInto(LibraryManager.library, {

  WebSocketInit: function(url, protocol) {
         this.socket = new WebSocket(url, protocol);
  },
  WebSocketSend: function(message) {
         this.socket.send(message);
  }

});

Example of a C# script using those methods:

using UnityEngine;
using System.Runtime.InteropServices;

public class WebSocketSender : MonoBehaviour {

    [DllImport("__Internal")]
    private static extern void WebSocketInit(string url, string protocol);

    [DllImport("__Internal")]
    private static extern void WebSocketSend(string message);

    void Start() {
        WebSocketInit("wss://example.com/gameserver", "mygameprotocol");
    }
    
    void Input() {
        if (Input.GetKeyDown(KeyCode.Space) {
                WebSocketSend("Pew!Pew!Pew!");
        }
    }
}

But please keep in mind that WebSockets are not native TCP/IP sockets. The protocol adds some framing and masking to the messages which makes them unable to implement any raw TCP/IP protocols. So you won't be able to use WebSockets to interface with any server which doesn't implement the WebService protocol.

As the documentation says, The Unity scripting API does not expose direct WebSocket access itself. But you can access the native web browser API by calling JavaScript from Unity C# scripts.

1. Create a JavaScript file which defines the functions you need and implements them by calling native browser functionality.
2. Give it the file extension .jslib
3. Put it into the directiory Assets/Plugins of your Unity project
4. Import them into a C# script by defining a class-level method with the prefix [DllImport("__Internal")] private static extern.

Example for a websocket.jslib:

mergeInto(LibraryManager.library, {

  WebSocketInit: function(url, protocol) {
         this.socket = new WebSocket(url, protocol);
  },
  WebSocketSend: function(message) {
         this.socket.send(message);
  }

});

Example of a C# script using those methods:

using UnityEngine;
using System.Runtime.InteropServices;

public class WebSocketSender : MonoBehaviour {

    [DllImport("__Internal")]
    private static extern void WebSocketInit(string url, string protocol);

    [DllImport("__Internal")]
    private static extern void WebSocketSend(string message);

    void Start() {
        WebSocketInit("wss://example.com/gameserver", "mygameprotocol");
    }
    
    void Update() {
        if (Input.GetKeyDown(KeyCode.Space)) {
                WebSocketSend("Pew!Pew!Pew!");
        }
    }
}

But please keep in mind that WebSockets are not native TCP/IP sockets. The protocol adds some framing and masking to the messages which makes them unable to implement any raw TCP/IP protocols. So you won't be able to use WebSockets to interface with any server which doesn't implement the WebService protocol.

As the documentation says, The Unity scripting API does not expose direct WebSocket access itself. But you can access the native web browser API by calling JavaScript from Unity C# scripts.

1. Create a JavaScript file which defines the functions you need and implements them by calling native browser functionality.
2. Give it the file extension .jslib
3. Put it into the directiory Assets/Plugins of your Unity project
4. Import them into a C# script by defining a class-level method with the prefix [DllImport("__Internal")] private static extern.

Example for a websocket.jslib:

mergeInto(LibraryManager.library, {

  WebSocketInit: function(url, protocol) {
         this.socket = new WebSocket(url, protocol);
  },
  WebSocketSend: function(message) {
         this.socket.send(message);
  }

});

Example of a C# script using those methods:

using UnityEngine;
using System.Runtime.InteropServices;

public class WebSocketSender : MonoBehaviour {

    [DllImport("__Internal")]
    private static extern void WebSocketInit(string url, string protocol);

    [DllImport("__Internal")]
    private static extern void WebSocketSend(string message);

    void Start() {
        WebSocketInit("wss://example.com/gameserver", "mygameprotocol");
    }
    
    void Input() {
        if (Input.GetKeyDown(KeyCode.Space) {
                WebSocketSend("Pew!Pew!Pew!");
        }
    }
}

As the documentation says, The Unity scripting API does not expose direct WebSocket access itself. But you can access the native web browser API by calling JavaScript from Unity C# scripts.

1. Create a JavaScript file which defines the functions you need and implements them by calling native browser functionality.
2. Give it the file extension .jslib
3. Put it into the directiory Assets/Plugins of your Unity project
4. Import them into a C# script by defining a class-level method with the prefix [DllImport("__Internal")] private static extern.

Example for a websocket.jslib:

mergeInto(LibraryManager.library, {

  WebSocketInit: function(url, protocol) {
         this.socket = new WebSocket(url, protocol);
  },
  WebSocketSend: function(message) {
         this.socket.send(message);
  }

});

Example of a C# script using those methods:

using UnityEngine;
using System.Runtime.InteropServices;

public class WebSocketSender : MonoBehaviour {

    [DllImport("__Internal")]
    private static extern void WebSocketInit(string url, string protocol);

    [DllImport("__Internal")]
    private static extern void WebSocketSend(string message);

    void Start() {
        WebSocketInit("wss://example.com/gameserver", "mygameprotocol");
    }
    
    void Input() {
        if (Input.GetKeyDown(KeyCode.Space) {
                WebSocketSend("Pew!Pew!Pew!");
        }
    }
}

But please keep in mind that WebSockets are not native TCP/IP sockets. The protocol adds some framing and masking to the messages which makes them unable to implement any raw TCP/IP protocols. So you won't be able to use WebSockets to interface with any server which doesn't implement the WebService protocol.