socket.send() - expected str, got bytearray

[artbiit]

We need a socket.send () method that takes a bytearray as its argument.

Hi, Thanks to Unity Python.

This time, I run a socket communication Python file made with general Python. I create a bytearray and send it. I tried several attempts to convert it to a string, but it all failed.

I've downloaded the IronPython source separately and tried to build it but it will not work with Unity.

Can you help me?

[exodrifter]

I need more information to be able to address your question. Are you...

• ...asking how to convert an array of bytes to a string in C#?
• ...asking if you can change a method in an existing python standard library to take an array of bytes instead of a string?

Could you provide a small, self-contained example of what you are trying to do along with some explanation or context for what you are trying to do?

[artbiit]

I'm sorry I could not give you much information.

The original source for IronPython is Socket.cs in IronPython.Modules and the definition for Sokcet.
I built it here by creating a new method called sendB that takes IronPython.Runtime.ByteArray as a parameter instead of a string.
The problem was that I was able to create a working ipy.exe from the command prompt, but I noticed that the dlls generated here would cause a stack overflow when running in Unity.
The place where I downloaded the ironpython is the following URL. https://ironpython.net/download/

So, as a result, you do not mean to handle byte arrays in your Unity Python, but you want to create a socket.py that contains a Socket.send that accepts a ByteArray :)

In fact, Unity is no different from your example. However, I will try to upload an example.

public class WifiBulb : MonoBehaviour
{
    public IPAddress IP;
    [SerializeField]
    private string Address = "172.30.1.47";
    string url;
    string _code;
    List<string> Libs;
    private void Awake()
    {
        IP = IPAddress.Parse(Address);
        url = Application.dataPath + "/python/Lib/flux_led-master/flux_led/__main__.py";
        Libs = new List<string>
        {
            Application.dataPath + "/Python/Lib",
            Application.dataPath + "/Python/Lib/flux_led-master",
            Application.dataPath + "/Python/Lib/flux_led-master/flux_led"
        };

    }


    private void SetColor()
    {

        var argv = new List();
        argv.Add("__main__.py");
        argv.Add(Address.ToString());
        argv.Add("-c");
        argv.Add("205,155,185");

        var engine = UnityPython.CreateEngine();
        var scope = engine.CreateScope();
        engine.Runtime.GetSysModule().SetVariable("argv", argv);

        var paths = engine.GetSearchPaths();
        foreach (string s in Libs)
            paths.Add(s);

        engine.SetSearchPaths(paths);

        StringBuilder code = new StringBuilder();
        code.Append("import UnityEngine\n");
        code.Append(_code);
        code = code.Replace("print", "UnityEngine.Debug.Log");
        Debug.Log(code.ToString());
        var script = engine.CreateScriptSourceFromString(code.ToString());
        script.Execute();


    }

}

In Unity, apply your general IronPython rules.

    def _send_msg(self, bytes):
        # calculate checksum of byte array and add to end
        if self._use_csum:
            csum = sum(bytes) & 0xFF
            bytes.append(csum)
        with self._lock:
            self._socket.sendB(bytes)
            print('success')

The flux_led is written in python for me to use. Here is the original URL: https://github.com/beville/flux_led

As you can see, we have applied the new method sendB. And if you apply your own ipy to the command prompt, it works.

I did not know how to explain it. I'm sorry. Do you have any more information you need?

[exodrifter]

I've tried reading your post several times over the last week and I'm unfortunately still unsure of what you're trying to do. Here's my best guess, but if I am wrong please explain why:

• You modified IronPython's _socket.cs to add sendB to it and created new DLLs and a new ipy.exe
• You modified flux_led to call sendB instead
• You tested the new ipy.exe executable on the command line with a python script that used your modified flux_led library, and it worked
• You replaced the existing DLLs in this library with your new DLLs
• You tested the same python script that used your modified flux_led library in Unity and got a stack overflow exception. Your expectation is that it should work like it did on the command line.

First, I would suggest narrowing your problem down to the minimal number of steps it takes to reproduce your issue. Instead of modifying IronPython or flux_led, change your python script to convert your ByteArray to a type flux_led already accepts.

If your problem goes away, then the modifications you have made are likely at fault. If this solution is not acceptable and you would still like to modify IronPython and flux_led, I cannot help you since what you want to do is out of scope of this library.

If your problem still exists, I can help if you can post a minimal example that does not involve modifications to IronPython or flux_led.

[exodrifter]

I'm closing this issue due to inactivity. I hope you have found a solution to this problem, but if you haven't and you would like to discuss this further, please feel free to re-open this issue.