C# HttpListener 接受untiy 上传的视频

要使用C# HttpListener接收Unity上传的视频，可以使用以下步骤：

1. 在Unity中编写脚本，将视频文件转换为字节数组并将其发送到指定的URL。

using UnityEngine;
using System.IO;
using System.Net;

public class VideoUploader : MonoBehaviour
{
    public string url;
    public string filePath;

    void Start()
    {
        byte[] videoBytes = File.ReadAllBytes(filePath);
        StartCoroutine(UploadVideo(videoBytes));
    }

    IEnumerator UploadVideo(byte[] videoBytes)
    {
        UnityWebRequest request = UnityWebRequest.Put(url, videoBytes);
        yield return request.SendWebRequest();

        if (request.result == UnityWebRequest.Result.Success)
        {
            Debug.Log("Video uploaded successfully!");
        }
        else
        {
            Debug.Log("Video upload failed: " + request.error);
        }
    }
}

2. 在C#中编写HttpListener服务器，以侦听从Unity发送的请求。在服务器代码中，使用`HttpListenerContext`对象从请求中获取视频数据并将其保存到本地文件中。

using System;
using System.IO;
using System.Net;

public class HttpServer
{
    private HttpListener listener;
    private string savePath;

    public HttpServer(string prefix, string savePath)
    {
        listener = new HttpListener();
        listener.Prefixes.Add(prefix);
        this.savePath = savePath;
    }

    public void Start()
    {
        listener.Start();
        Console.WriteLine("Server started.");

        while (true)
        {
            HttpListenerContext context = listener.GetContext();
            ProcessRequest(context);
        }
    }

    private void ProcessRequest(HttpListenerContext context)
    {
        HttpListenerRequest request = context.Request;
        HttpListenerResponse response = context.Response;

        if (request.HttpMethod == "PUT")
        {
            byte[] videoBytes = new byte[request.ContentLength64];
            int bytesRead = request.InputStream.Read(videoBytes, 0, videoBytes.Length);

            if (bytesRead > 0)
            {
                string fileName = Path.GetFileName(request.Url.LocalPath);
                string filePath = Path.Combine(savePath, fileName);
                File.WriteAllBytes(filePath, videoBytes);

                response.StatusCode = 200;
                response.StatusDescription = "OK";
                response.OutputStream.Close();
                Console.WriteLine("Video saved to: " + filePath);
            }
        }
    }

    public void Stop()
    {
        listener.Stop();
        listener.Close();
        Console.WriteLine("Server stopped.");
    }
}

3. 在Main函数中实例化HttpServer并启动它。

static void Main(string[] args)
{
    string prefix = "http://localhost:8080/";
    string savePath = "C:\\Videos";
    HttpServer server = new HttpServer(prefix, savePath);
    server.Start();
    Console.ReadKey();
    server.Stop();
}

上述代码中，`prefix`是HTTP监听器的前缀，`savePath`是要保存视频文件的本地路径。在Unity中将`url`设置为服务器的`prefix`和视频文件名即可上传视频文件。