HTTP 서버

1) HTTP 서버
① System.Net Namespace 사용

using System.Net

② HTTP 서버 구동(ex. “http://127.0.0.1:8080/")

HttpListener listener = new HttpListener(); listener.Prefixes.Add("http://127.0.0.1:8080/"); listener.Start();

③ HTTP 요청 처리 (ex. ‘HelloWorld’ 응답

var context = listener.GetContext(); Console.WriteLine("Request : " + context.Request.Url); byte[] data = Encoding.UTF8.GetBytes("HelloWorld"); context.Response.OutputStream.Write(data, 0, data.Length); context.Response.StatusCode = 200; context.Response.Close();

2) HTTP 클라이언트
①
System.Net.Http Namespace 사용

using System.Net.Http

② HTTP 요청 응답 (ex. “http://127.0.0.1: helloworld")

HttpClient client = new HttpClient(); var res = client.GetAsync("http://127.0.0.1:8080/helloworld").Result; Console.WriteLine("Response : " + res.StatusCode);

Json  변환 

① Newtonsoft.Json Namespace 사용

using Newtonsoft.Json using Newtonsoft.Json.Linq

② Json 변환 (ex. string <--> JObject)

JObject json = new JObject(); json ["name"] = "John Doe"; json["salary"] = 300100; string jsonstr = json.ToString(); Console.WriteLine("Json : " + jsonstr); JObject json2 = JObject.Parse(jsonstr); Console.WriteLine($"Name : {json2["name"]}, Salary : {json2["salary"]}");

HTTP 추가 관련 코드

using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Net; using System.Text; using System.Threading.Tasks; namespace HTTP_SERVER {     class MyServer     {         static void Main(string[] args)         {             HttpListener listener = new HttpListener();             listener.Prefixes.Add("http://127.0.0.1:8080/");             listener.Start();             while(true)             {                 var context = listener.GetContext();                 Console.WriteLine(string.Format("Request({0}) : {1}", context.Request.HttpMethod, context.Request.Url));                 DateTime dt = DateTime.Now;                 String strRes = "";                 if (context.Request.HttpMethod == "GET")                 {                     strRes = dt.ToString();                 }                 else if (context.Request.HttpMethod == "POST")                 {                     strRes = "(POST) " + dt.ToString();                     Systehttp://m.IO.Stream body = context.Request.InputStream;                     System.Text.Encoding encoding = context.Request.ContentEncoding;                     System.IO.StreamReader reader = new System.IO.StreamReader(body, encoding);                     string s = reader.ReadToEnd();                     System.IO.Directory.CreateDirectory(".\\Output");                     string fileName = string.Format(".\\Output\\{0:D2}{1:D2}{2:D2}.json", DateTime.Now.Hour, DateTime.Now.Minute, DateTime.Now.Second);                     StreamWriter sw = new StreamWriter(fileName);                     sw.WriteLine(s);                     sw.Close();                     body.Close();                     reader.Close();                 }                 else                 {                 }                                  byte[] data = Encoding.UTF8.GetBytes(strRes);                 context.Response.OutputStream.Write(data, 0, data.Length);                 context.Response.StatusCode = 200;                 context.Response.Close();             }         }     } }