【Android】httpsの接続で失敗する

Androidにて開発を行ってく上で、
httpsの接続が必要になった。

アプリ内で通信する(Browser経由ではない)必要
があったため、
https通信に関する情報をあつめて、
Android側でテストすると、handShakeできないみたい。
最初に参照にしていたサイトを
元に書いたのが下のコード。
これで問題なく動くはずなんだが・・・。

package jp.ne.XXX.https;

import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;

import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.params.ClientPNames;
import org.apache.http.client.params.CookiePolicy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;
import org.apache.http.util.EntityUtils;
import org.json.JSONObject;

import android.util.Log;

public class HttpRequest{

DefaultHttpClient httpClient;
HttpContext localContext;
private String ret;

HttpResponse response = null;
HttpPost httpPost = null;
HttpGet httpGet = null;

public HttpRequest(){
HttpParams myParams = new BasicHttpParams();

HttpConnectionParams.setConnectionTimeout(myParams, 10000);
HttpConnectionParams.setSoTimeout(myParams, 10000);
httpClient = new DefaultHttpClient(myParams);
localContext = new BasicHttpContext();
}

public void clearCookies() {
httpClient.getCookieStore().clear();
}

public void abort() {
try {
if (httpClient != null) {
System.out.println("Abort.");
httpPost.abort();
}
} catch (Exception e) {
System.out.println("Your App Name Here" + e);
}
}

public String sendPost(String url, String data) {
return sendPost(url, data, null);
}

public String sendJSONPost(String url, JSONObject data) {
return sendPost(url, data.toString(), "application/json");
}

public String sendPost(String url, String data, String contentType) {
ret = null;

httpClient.getParams().setParameter(ClientPNames.COOKIE_POLICY, CookiePolicy.RFC_2109);

httpPost = new HttpPost(url);
response = null;

StringEntity tmp = null;

Log.d("Your App Name Here", "Setting httpPost headers");

httpPost.setHeader("User-Agent", "SET YOUR USER AGENT STRING HERE");
httpPost.setHeader("Accept", "text/html,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5");

if (contentType != null) {
httpPost.setHeader("Content-Type", contentType);
} else {
httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded");
}

try {
tmp = new StringEntity(data,"UTF-8");
} catch (UnsupportedEncodingException e) {
Log.e("Your App Name Here", "HttpUtils : UnsupportedEncodingException : "+e);
}

httpPost.setEntity(tmp);

Log.d("Your App Name Here", url + "?" + data);

try {
response = httpClient.execute(httpPost,localContext);

if (response != null) {
ret = EntityUtils.toString(response.getEntity());
}
} catch (Exception e) {
Log.e("Your App Name Here", "HttpUtils: " + e);
}

Log.d("Your App Name Here", "Returning value:" + ret);

return ret;
}

public String sendGet(String url) {
httpGet = new HttpGet(url);

try {
response = httpClient.execute(httpGet);
} catch (Exception e) {
Log.e("Your App Name Here", e.getMessage());
}

//int status = response.getStatusLine().getStatusCode();

// we assume that the response body contains the error message
try {
ret = EntityUtils.toString(response.getEntity());
} catch (IOException e) {
Log.e("Your App Name Here", e.getMessage());
}

return ret;
}

public InputStream getHttpStream(String urlString) throws IOException {
InputStream in = null;
int response = -1;

URL url = new URL(urlString);
URLConnection conn = url.openConnection();

if (!(conn instanceof HttpURLConnection))
throw new IOException("Not an HTTP connection");

try{
HttpURLConnection httpConn = (HttpURLConnection) conn;
httpConn.setAllowUserInteraction(false);
httpConn.setInstanceFollowRedirects(true);
httpConn.setRequestMethod("GET");
httpConn.connect();

response = httpConn.getResponseCode();

if (response == HttpURLConnection.HTTP_OK) {
in = httpConn.getInputStream();
}
} catch (Exception e) {
throw new IOException("Error connecting");
} // end try-catch

return in;
}
}

結局、色々調べた結果
http://www.glamenv-septzen.net/view/981
ここのサイトにたどりついた。
元々テスト用のhttpsサーバーは証明書が切れたため、
自己証明に対応せざる得なかった。
ここのサイトをベースにコードを書くと、
問題なく通信できたので、
すごく助かった。
ただ、この問題は今後も発生しそうなので、メモ。
自己署名証明書(Self Signed Certificate)