Scenario
Users have to login to the server with this app. Later in the app we need to check their login status against the server. We used to do this by keeping track of the last used HttpClient. Recently we switched to HttpUrlConnection but the so-called persistent connections are not working.
Question
I wrote this test app to see if the connections were persistent. I get xml back from both URLs but the connection is not behaving like it's consistent. How can I get this to work?
Note: Everything works as expected if you go to the Login url in a browser and then go to the GetUserInfo url in the same browser.
MainActivity.java
package com.mediajackagency.test;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URL;
public class MainActivity extends AppCompatActivity {
public Button signInBtn = null;
public Button getUserInfoBtn = null;
public TextView xmlTextView = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
this.xmlTextView = (TextView)findViewById(R.id.xmlTxtView);
this.signInBtn = (Button)findViewById(R.id.signInBtn);
this.signInBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AsyncTask task = new AsyncTask() {
@Override
protected Object doInBackground(Object[] params) {
String xml = loadUrl("https://www.fake.site/Login?userName=test&password=pass123");
return xml;
}
@Override
protected void onPostExecute(Object o) {
super.onPostExecute(o);
xmlTextView.setText(o.toString());
}
};
task.execute();
}
});
this.getUserInfoBtn = (Button)findViewById(R.id.getUserInfoBtn);
this.getUserInfoBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AsyncTask task = new AsyncTask() {
@Override
protected Object doInBackground(Object[] params) {
String xml = loadUrl("https://www.fake.site/GetCurrentUser");
return xml;
}
@Override
protected void onPostExecute(Object o) {
super.onPostExecute(o);
xmlTextView.setText(o.toString());
}
};
task.execute();
}
});
}
public String loadUrl(String url) {
URI uri = MainActivity.encodeUrl(url);
Log.i("XMLParser", "Get URL: " + url);
String xml = null;
URL link;
BufferedReader reader = null;
StringBuilder stringBuilder = null;
InputStream is = null;
HttpURLConnection connection = null;
try {
link = new URL(url);
connection = (HttpURLConnection) link.openConnection();
connection.setRequestMethod("GET");
connection.connect();
is = connection.getInputStream();
reader = new BufferedReader(new InputStreamReader(is));
stringBuilder = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
stringBuilder.append(line + "\r");
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
if(reader != null) reader.close();
} catch (Exception e) {
e.printStackTrace();
}
try {
if(is != null) is.close();
} catch (Exception e) {
e.printStackTrace();
}
try {
if(connection != null) connection.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
}
}
try {
xml = stringBuilder.toString();
} catch(Exception e) {
e.printStackTrace();
}
return xml;
}
public static URI encodeUrl(String url) {
URL urlObject;
URI uri = null;
try {
urlObject = new URL(url);
uri = new URI(urlObject.getProtocol(), urlObject.getUserInfo(), urlObject.getHost(),
urlObject.getPort(), urlObject.getPath(), urlObject.getQuery(), urlObject.getRef());
} catch (Exception e) {
e.printStackTrace();
}
return uri;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
