HttpWebRequestのサンプル

Test.cs

using UnityEngine;
using UnityEngine.UI;
using System.IO;
using System.Net;
using System.Text;
using System;
using System.Collections;
using System.ComponentModel;

public class Test : MonoBehaviour {
    public InputField InfoInputField;
    const string uri1 = "http://d.hatena.ne.jp/nakamura001/";            // 非SSL
    const string uri2 = "https://unity3d.com/jp/legal/privacy-policy";    // SSL(DigiCart)
    const string uri3 = "https://www.verisign.com/";                    // SSL(VeriSign)

    void Download(string uri) {
        string info = string.Format("URI:{0}\n", uri);
        WebRequest request = HttpWebRequest.Create(uri);
        request.Method = "GET";
        WebResponse resp = null;
        try {
            resp = request.GetResponse();
        } catch(Exception e) {
            resp = null;
            info += "exception:\n" + e.ToString ();
        }

        if (resp != null) {
            Stream st = resp.GetResponseStream();
            StreamReader sr = new StreamReader(st, Encoding.GetEncoding("UTF-8"));
            info += sr.ReadToEnd();
            sr.Close();
            st.Close();
        }
        InfoInputField.text = info;
    }

    public void Test1() {
        Download (uri1);
    }

    public void Test2() {
        Download (uri2);
    }

    public void Test3() {
        Download (uri3);
    }
}