Unity的网络请求_短连接

using System.Text;
using UnityEngine;
using System.Collections;
using UnityEngine.Networking;
using System.Collections.Generic;

public class HttpControl : MonoBehaviour
{
    
    public HttpType hType;

    private void Start()                 //测试代码
    {
    
        Debug.Log("HttpType:" + hType.ToString());
        string url = "https://api.apiopen.top/todayVideo";
        string urlGET = "https://api.apiopen.top/musicRankingsDetails?";
        if (hType == HttpType.GET)
        {
    
            StartCoroutine(SendMsgGET(urlGET, "type=1"));
        }
        else if (hType == HttpType.POST)
        {
    
            StartCoroutine(SendMsgPOST(url, "1", "1"));
        }
    }
    /// <summary>
    /// POST请求
    /// </summary>
    /// <param name="url"></param>
    /// <param name="content"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    public IEnumerator SendMsgPOST(string url, string content, string token)
    {
    
        UnityWebRequest unityWeb = new UnityWebRequest(url, "POST");
        byte[] body = Encoding.UTF8.GetBytes(content);
        unityWeb.uploadHandler = new UploadHandlerRaw(body);
        unityWeb.SetRequestHeader("Content-Type", "application/json;charset=utf-8");
        unityWeb.SetRequestHeader("authorization", "Bearer " + token);
        unityWeb.certificateHandler = new WebRequestCert();
        unityWeb.downloadHandler = new DownloadHandlerBuffer();
        UnityWebRequestAsyncOperation ao = unityWeb.SendWebRequest();
        yield return ao;
        if (ao.webRequest.isNetworkError || ao.webRequest.isHttpError)
        {
    
            Debug.Log("error receiving.");
        }
        else
        {
    
            byte[] encodedBytes = Encoding.UTF8.GetBytes(ao.webRequest.downloadHandler.text);
            string data = Encoding.UTF8.GetString(encodedBytes);
            Debug.Log("POST" + data);
        }
    }
    public IEnumerator SendMsgGET(string url, string content)
    {
    
        UnityWebRequest unityWeb = UnityWebRequest.Get(url + content);
        unityWeb.downloadHandler = new DownloadHandlerBuffer();
        UnityWebRequestAsyncOperation ao = unityWeb.SendWebRequest();
        yield return ao;
        if (ao.webRequest.isNetworkError || ao.webRequest.isHttpError)
        {
    
            Debug.Log("error receiving.");
        }
        else
        {
    
            byte[] encodedBytes = Encoding.UTF8.GetBytes(ao.webRequest.downloadHandler.text);
            string data = Encoding.UTF8.GetString(encodedBytes);
            Debug.Log("GET" + data + "...");
        }
    }
}
/// <summary>
/// HTTP类型选择
/// </summary>
public enum HttpType
{
    
    POST,
    GET
}
/// <summary>
/// https跳过证书验证
/// </summary>
public class WebRequestCert : CertificateHandler
{
    
    protected override bool ValidateCertificate(byte[] certificateData)
    {
    
        return true;
    }
}

---

C#服务器代码参考：
https://www.cnblogs.com/tuyile006/p/11857590.html

using System;
using System.IO;
using System.Net;
using System.Threading;
using System.Net.Sockets;
using System.Collections;

namespace Bend.Util
{
    
    public class HttpProcessor
    {
    
        public string http_url;
        public string http_method;
        public HttpServer srv;
        public TcpClient socket;
        public StreamWriter outputStream;
        public string http_protocol_versionstring;
        public Hashtable httpHeaders = new Hashtable();

        private Stream inputStream;
        private static int MAX_POST_SIZE = 10 * 1024 * 1024; // 10MB

        public HttpProcessor(TcpClient socket, HttpServer srv)
        {
    
            this.socket = socket;
            this.srv = srv;
        }
        private string StreamReadLine(Stream inputStream)
        {
    
            int next_char;
            string data = "";
            while (true)
            {
    
                next_char = inputStream.ReadByte();
                if (next_char == '\n') {
     break; }
                if (next_char == '\r') {
     continue; }
                if (next_char == -1) {
     Thread.Sleep(1); continue; };
                data += Convert.ToChar(next_char);
            }
            return data;
        }
        public void Process()
        {
    
            // we can't use a StreamReader for input, because it buffers up extra data on us inside it's
            // "processed" view of the world, and we want the data raw after the headers
            inputStream = new BufferedStream(socket.GetStream());

            // we probably shouldn't be using a streamwriter for all output from handlers either
            outputStream = new StreamWriter(new BufferedStream(socket.GetStream()));
            try
            {
    
                ParseRequest();
                ReadHeaders();
                if (http_method.Equals("GET"))
                {
    
                    HandleGETRequest();
                }
                else if (http_method.Equals("POST"))
                {
    
                    HandlePOSTRequest();
                }
            }
            catch (Exception e)
            {
    
                Console.WriteLine("Exception: " + e.ToString());
                WriteFailure();
            }
            outputStream.Flush();
            // bs.Flush(); // flush any remaining output
            inputStream = null; outputStream = null; // bs = null; 
            socket.Close();
        }
        public void ParseRequest()
        {
    
            string request = StreamReadLine(inputStream);
            string[] tokens = request.Split(' ');
            if (tokens.Length != 3)
            {
    
                throw new Exception("invalid http request line");
            }
            http_method = tokens[0].ToUpper();
            http_url = tokens[1];
            http_protocol_versionstring = tokens[2];
            Console.WriteLine("starting: " + request);
        }

        public void ReadHeaders()
        {
    
            Console.WriteLine("readHeaders()");
            string line;
            while ((line = StreamReadLine(inputStream)) != null)
            {
    
                if (line.Equals(""))
                {
    
                    Console.WriteLine("got headers");
                    return;
                }
                int separator = line.IndexOf(':');
                if (separator == -1)
                {
    
                    throw new Exception("invalid http header line: " + line);
                }
                string name = line.Substring(0, separator);
                int pos = separator + 1;
                while ((pos < line.Length) && (line[pos] == ' '))
                {
    
                    pos++; // strip any spaces
                }
                string value = line.Substring(pos, line.Length - pos);
                Console.WriteLine("header: {0}:{1}", name, value);
                httpHeaders[name] = value;
            }
        }

        public void HandleGETRequest()
        {
    
            srv.HandleGETRequest(this);
        }
        private const int BUF_SIZE = 4096;
        public void HandlePOSTRequest()
        {
    
            // this post data processing just reads everything into a memory stream.
            // this is fine for smallish things, but for large stuff we should really
            // hand an input stream to the request processor. However, the input stream 
            // we hand him needs to let him see the "end of the stream" at this content 
            // length, because otherwise he won't know when he's seen it all! 
            Console.WriteLine("get post data start");
            MemoryStream ms = new MemoryStream();
            if (httpHeaders.ContainsKey("Content-Length"))
            {
    
                int content_len = Convert.ToInt32(httpHeaders["Content-Length"]);
                if (content_len > MAX_POST_SIZE)
                {
    
                    throw new Exception(string.Format("POST Content-Length({0}) too big for this simple server", content_len));
                }
                byte[] buf = new byte[BUF_SIZE];
                int to_read = content_len;
                while (to_read > 0)
                {
    
                    Console.WriteLine("starting Read, to_read={0}", to_read);
                    int numread = this.inputStream.Read(buf, 0, Math.Min(BUF_SIZE, to_read));
                    Console.WriteLine("read finished, numread={0}", numread);
                    if (numread == 0)
                    {
    
                        if (to_read == 0)
                        {
    
                            break;
                        }
                        else
                        {
    
                            throw new Exception("client disconnected during post");
                        }
                    }
                    to_read -= numread;
                    ms.Write(buf, 0, numread);
                }
                ms.Seek(0, SeekOrigin.Begin);
            }
            Console.WriteLine("get post data end");
            srv.HandlePOSTRequest(this, new StreamReader(ms));
        }

        public void WriteSuccess()
        {
    
            outputStream.WriteLine("HTTP/1.0 200 OK");
            outputStream.WriteLine("Content-Type: text/html;charset=utf-8");
            outputStream.WriteLine("Connection: close");
            outputStream.WriteLine("");
        }

        public void WriteFailure()
        {
    
            outputStream.WriteLine("HTTP/1.0 404 File not found");
            outputStream.WriteLine("Connection: close");
            outputStream.WriteLine("");
        }
    }

    public abstract class HttpServer
    {
    
        protected int port;
        protected string ip;
        TcpListener listener;
        bool is_active = true;
        public HttpServer(string ip, int port)
        {
    
            this.ip = ip;
            this.port = port;
        }
        public void Listen()
        {
    
            listener = new TcpListener(IPAddress.Parse(ip), port);
            listener.Start();
            while (is_active)
            {
    
                TcpClient tc = listener.AcceptTcpClient();
                HttpProcessor processor = new HttpProcessor(tc, this);
                Thread thread = new Thread(new ThreadStart(processor.Process));
                thread.Start();
                Thread.Sleep(1);
            }
        }
        public abstract void HandleGETRequest(HttpProcessor p);
        public abstract void HandlePOSTRequest(HttpProcessor p, StreamReader inputData);
    }

    public class MyHttpServer : HttpServer
    {
    
        public MyHttpServer(string ip, int port) : base(ip, port)
        {
    
        }
        public override void HandleGETRequest(HttpProcessor p)
        {
    
            p.WriteSuccess();
            p.outputStream.Write("{\"needs\":[{\"token\":\"0x610178dA211FEF7D417bC0e6FeD39F05609AD788\",\"value\":1},{\"token\":\"0x610178dA211FEF7D417bC0e6FeD39F05609AD788\",\"value\":2}],\"rewards\":[{\"token\":\"0xB7f8BC63BbcaD18155201308C8f3540b07f84F5e\",\"value\":{\"type\":\"BigNumber\",\"hex\":\"0x24150e\"}}]}");
            Console.WriteLine("request: {0}", p.http_url);
            //p.outputStream.WriteLine("<html><body><h1>test server</h1>");
            //p.outputStream.WriteLine("Current Time: " + DateTime.Now.ToString());
            //p.outputStream.WriteLine("url : {0}", p.http_url);

            //p.outputStream.WriteLine("<form method=post action=/form>");
            //p.outputStream.WriteLine("<input type=text name=foo value=foovalue>");
            //p.outputStream.WriteLine("<input type=submit name=bar value=barvalue>");
            //p.outputStream.WriteLine("</form>");
        }

        public override void HandlePOSTRequest(HttpProcessor p, StreamReader inputData)
        {
    
            Console.WriteLine("POST request: {0}", p.http_url);
            string data = inputData.ReadToEnd();

            p.outputStream.WriteLine("<html><body><h1>test server</h1>");
            p.outputStream.WriteLine("<a href=/test>return</a><p>");
            p.outputStream.WriteLine("postbody: <pre>{0}</pre>", data);
        }
    }

    public class Program
    {
    
        public static int Main(String[] args)
        {
    
            string ip = "192.168.3.216";
            int port = 8080;
            HttpServer httpServer;
            if (args.GetLength(0) > 0)
            {
    
                httpServer = new MyHttpServer(ip, Convert.ToInt16(args[0]));
            }
            else
            {
    
                httpServer = new MyHttpServer(ip, port);
            }
            Thread thread = new Thread(new ThreadStart(httpServer.Listen));
            thread.Start();
            return 0;
        }
    }
}

---

其他记录：
例如：http://192.168.3.216:8080/help?age=21&limit=2&offset=1
1.HandleGETRequest(HttpProcessor p)中的 HttpProcessor p 是指“/help?age=21&limit=2&offset=1”，即为地址的请求部分。
2.HttpUtility.ParseQueryString(url.Split(’?’)[1])意为将请求部分的参数字典话；

  var queryObj = HttpUtility.ParseQueryString(url.Split('?')[1]);
  //url.Split('?')[1]是age=21&limit=2&offset=1
  string age=queryObj["age"];//21

3.另一种获取地址参数部分的方法：URI

 Uri uri = new Uri("http://192.168.3.216:8080/help?age=21&limit=2&offset=1");
 Console.WriteLine(uri.Query);//?age=21&limit=2&offset=1