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Java

/*
* Copyright (c) 2015, Netsyms Technologies
* All rights reserved.
*
*
* CODE LICENSE ==========
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* 4. You adhere to the Media License detailed below. If you do not, this license
* is automatically revoked and you must purge all copies of the software you
* possess, in source or binary form.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* MEDIA LICENSE ==========
* All images and other graphical files ("media") included with this
* software are copyright (c) 2015 Netsyms Technologies. You may not distribute
* the graphics or any program, source code repository, or other digital storage
* media containing them without permission from Netsyms Technologies.
* This ban on distribution only applies to publicly available systems.
* A password-protected network file share, USB drive, or other storage scheme that
* cannot be easily accessed by the public is generally allowed. If in doubt,
* contact Netsyms Technologies. If Netsyms Technologies allows or denies
* you permission, that decision is considered final and binding.
*
* You may only use the media for personal,
* non-commercial, non-educational use unless:
* 1, You have paid for the software and media via the SyMAT website,
* or 2, you are using it as part of the 15-day trial period.
* Other uses are prohibited without permission.
* If any part of this license is deemed unenforcable, the remainder
* of the license remains in full effect.
*/
package net.apocalypselabs.symat;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
/**
* This class attempts to send startup data to an existing instance, and if it
* succeeds it kills this instance of SyMAT.
*
* @author Skylar
*/
public class SingleInstanceClient {
/**
*
* @param arg
*/
public SingleInstanceClient(String arg) {
String response = "";
String args = (arg.equals("") ? "" : "?arg=" + arg);
try {
URL url = new URL("http://127.0.0.1:26879" + args);
InputStream is = url.openStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line = br.readLine();
br.close();
is.close();
response = line;
} catch (Exception ex) {
}
if (response.equals("OK")) {
Debug.println("Handing off to original instance...");
System.exit(0);
}
}
}