[ASP.NET] API 요청 : CookieContainer, HttpWebRequest, HttpWebResponse

# CookieContainer란?

A CookieContainer is a data structure that provides storage for instances of the Cookie class, and which is accessed in a database-like manner. The CookieContainer has a capacity limit that is set when the container is created or changed by a property.

Cookie 클래스의 인스턴스를 위한 공간을 제공하는 데이터 구조이다. 쿠키에 db와 같이 접근 가능하고, 용량의 제한이 있다.

# namespace 

- System.Net

# 생성

string requestBody = string.Empty

CookieContainer cookieContainer = new CookieContainer();

HttpWebRequest request = null;

request = (HttpWebRequest)WebRequest.Create(url);

request.Method = "POST" or "GET"

request.Accpet = "application/json"

request.ContentType = "application/json"

request.PreAuthenticate = true

if (!requestBody.Equals(string.Empty)){

byts[] data = Encoding.UTF8.GetBytes(requestBody);

// request body 입력 방법

Stream dataStream = request.GetRequestStream();

dataStream.Write(data, 0, data.Length);

dataStream.Close(); 

}

request.Headers.Add("Authorization", "Basic <base64 계정 정보>");

request.CookieContainer = cookieContainer; // 전송 성공 후 쿠키 저장

using (response = request.GetResponse() as HttpWebResponse) // 요청 수행 후 응답 객체

{

var responseStream = response.GetResponseStream()

if (responseStream != null && responseStream != Stream.Null) 

{

        // response 출력 방법

var Reader = new StreamReader(responseStream);

retJson      = Reader.ReadToEnd();

Reader.Close();

}

}