unity简单http案例 + 服务端

客户端

using System;
using System.Collections;
using System.Collections.Generic;
using System.Net;
using System.Text;
using System.Threading;
using Newtonsoft.Json;
using UnityEngine;

public class TestHttp : MonoBehaviour
{
    private WebClient wc;
    private string url = "http://localhost:8079";
    private Thread thread;
    
    // Start is called before the first frame update
    void Start()
    {
        CreateWebClient();
        thread = new Thread(SendHttpMsg);
        Debug.Log("按K键发送消息");
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.K))
        {
            //异步
            Action ac = SendHttpMsg;
            ac.BeginInvoke(null,null);
            
            //同步
            //SendHttpMsg();

            //线程
            //thread.Start();
        }
    }

    void CreateWebClient()
    {
        wc = new WebClient();
    }
    
    /// <summary>
    /// 向服务器发送消息
    /// </summary>
    void SendHttpMsg()
    {
        Debug.Log($"请求服务地址:{url}，时间：{DateTime.Now.ToString()}");
        //模拟一个json数据发送到服务端
        var data = new Data(1, "张三");
        var jsonModel = JsonConvert.SerializeObject(data);
        //发送到服务端并获得返回值
        byte[] returnInfo;
        try
        {
            returnInfo = wc.UploadData(url, Encoding.UTF8.GetBytes(jsonModel));
        }
        catch (Exception e)
        {
            Debug.LogError("url可能不对，或者远程服务器关闭，或者连接失败");
            Debug.LogError(e);
            return;
        }
        //把服务端返回的信息转成字符串
        var str = Encoding.UTF8.GetString(returnInfo);
        Debug.Log($"服务端返回信息：{str},时间：{DateTime.Now.ToString()}");
    }
}

class Data
{
    public Data(int id, string name)
    {
        this.ID = id;
        this.Name = name;
    }
    public int ID { get; set; }

    public string Name { get; set; }
}

服务端

using System;
using System.Collections.Generic;
using System.Net;
using System.Text;

namespace HttpServer
{
    internal class Program
    {
        static HttpListener httpobj;
        public static void Main(string[] args)
        {
            //提供一个简单的、可通过编程方式控制的 HTTP 协议侦听器。此类不能被继承。
            httpobj = new HttpListener();
            //定义url及端口号，通常设置为配置文件
            //httpobj.Prefixes.Add("http://+:8089/");
            httpobj.Prefixes.Add("http://localhost:8079/");


            //启动监听器
            httpobj.Start();
            //异步监听客户端请求，当客户端的网络请求到来时会自动执行Result委托
            //该委托没有返回值，有一个IAsyncResult接口的参数，可通过该参数获取context对象
            httpobj.BeginGetContext(Result, null);
            Console.WriteLine($"服务端初始化完毕，正在等待客户端请求,时间：{DateTime.Now.ToString()}
");
            Console.ReadKey();
        }
        
        private static void Result(IAsyncResult ar)
        {
            //当接收到请求后程序流会走到这里

            //继续异步监听
            httpobj.BeginGetContext(Result, null);
            var guid = Guid.NewGuid().ToString();
            Console.ForegroundColor = ConsoleColor.White;
            Console.WriteLine($"接到新的请求:{guid},时间：{DateTime.Now.ToString()}");
            //获得context对象
            var context = httpobj.EndGetContext(ar);
            var request = context.Request;
            var response = context.Response;
            ////如果是js的ajax请求，还可以设置跨域的ip地址与参数
            //context.Response.AppendHeader("Access-Control-Allow-Origin", "*");//后台跨域请求，通常设置为配置文件
            //context.Response.AppendHeader("Access-Control-Allow-Headers", "ID,PW");//后台跨域参数设置，通常设置为配置文件
            //context.Response.AppendHeader("Access-Control-Allow-Method", "post");//后台跨域请求设置，通常设置为配置文件
            context.Response.ContentType = "text/plain;charset=UTF-8";//告诉客户端返回的ContentType类型为纯文本格式，编码为UTF-8
            context.Response.AddHeader("Content-type", "text/plain");//添加响应头信息
            context.Response.ContentEncoding = Encoding.UTF8;
            string returnObj = null;//定义返回客户端的信息
            if (request.HttpMethod == "POST" && request.InputStream != null)
            {
                //处理客户端发送的请求并返回处理信息
                returnObj = HandleRequest(request, response);
            }
            else
            {
                returnObj = $"不是post请求或者传过来的数据为空";
            }
            var returnByteArr = Encoding.UTF8.GetBytes(returnObj);//设置客户端返回信息的编码
            try
            {
                using (var stream = response.OutputStream)
                {
                    //把处理信息返回到客户端
                    stream.Write(returnByteArr, 0, returnByteArr.Length);
                }
            }
            catch (Exception ex)
            {
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine($"网络蹦了：{ex.ToString()}");
            }
            Console.ForegroundColor = ConsoleColor.Yellow;
            Console.WriteLine($"请求处理完成：{guid},时间：{ DateTime.Now.ToString()}
");
        }

        private static string HandleRequest(HttpListenerRequest request, HttpListenerResponse response)
        {
            string data = null;
            try
            {
                var byteList = new List<byte>();
                var byteArr = new byte[2048];
                int readLen = 0;
                int len = 0;
                //接收客户端传过来的数据并转成字符串类型
                do
                {
                    readLen = request.InputStream.Read(byteArr, 0, byteArr.Length);
                    len += readLen;
                    byteList.AddRange(byteArr);
                } while (readLen != 0);
                data = Encoding.UTF8.GetString(byteList.ToArray(),0, len);

                //获取得到数据data可以进行其他操作
            }
            catch (Exception ex)
            {
                response.StatusDescription = "404";
                response.StatusCode = 404;
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine($"在接收数据时发生错误:{ex.ToString()}");
                return $"在接收数据时发生错误:{ex.ToString()}";//把服务端错误信息直接返回可能会导致信息不安全，此处仅供参考
            }
            response.StatusDescription = "200";//获取或设置返回给客户端的 HTTP 状态代码的文本说明。
            response.StatusCode = 200;// 获取或设置返回给客户端的 HTTP 状态代码。
            Console.ForegroundColor = ConsoleColor.Green;
            Console.WriteLine($"接收数据完成:{data.Trim()},时间：{DateTime.Now.ToString()}");
            return $"接收数据完成";
        }
    }
}