android에서 HTTPS 접근 모듈

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package ukg.network.http;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import android.util.Log;

/*
작성자 : 도플광어
설명 : 안드로이드 용 html 다운로더 모듈 (https 도 지원함)
*/
public class CHttpUtil {
  public static String DownloadHtml(String addr) {
    StringBuilder html = new StringBuilder();
    try {
      URL url = new URL(addr);
      //HttpURLConnection conn = (HttpURLConnection)url.openConnection();

      HttpURLConnection conn = null;

      if (url.getProtocol().toLowerCase().equals("https")) {
        trustAllHosts();
        HttpsURLConnection https = (HttpsURLConnection) url.openConnection();
        https.setHostnameVerifier(DO_NOT_VERIFY);
        conn = https;
      } else {
        conn = (HttpURLConnection) url.openConnection();
      }

      if (conn != null) {
        conn.setConnectTimeout(10000);
        conn.setUseCaches(false);
        int resultcode = conn.getResponseCode();
        if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
          BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
          for (;;) {
            String line = br.readLine();
            if (line == null) break;
            html.append(line + '\n');
          }
          br.close();
        }
        conn.disconnect();
      }
    }
    catch (Exception ex) {
      Log.i("error",ex.getMessage());
      return ex.getMessage();
      //System.out.println(ex.getMessage());
    }
    return html.toString();
  }

  private static void trustAllHosts() {
    // Create a trust manager that does not validate certificate chains
    TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
      public java.security.cert.X509Certificate[] getAcceptedIssuers() {
        return new java.security.cert.X509Certificate[] {};
      }

      @Override
      public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws java.security.cert.CertificateException {
        // TODO Auto-generated method stub
      }

      @Override
      public void checkServerTrusted(java.security.cert.X509Certificate[] chain,String authType) throws java.security.cert.CertificateException {
        // TODO Auto-generated method stub
      }
    } };

    // Install the all-trusting trust manager
    try {
      SSLContext sc = SSLContext.getInstance("TLS");
      sc.init(null, trustAllCerts, new java.security.SecureRandom());
      HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  final static HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() {
    @Override
    public boolean verify(String arg0, SSLSession arg1) {
      // TODO Auto-generated method stub
      return true;
    }
  };
}