core/src/test/java/fi/iki/elonen/integration/ShutdownTest.java

package fi.iki.elonen.integration;

/*
 * #%L
 * NanoHttpd-Core
 * %%
 * Copyright (C) 2012 - 2015 nanohttpd
 * %%
 * 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.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    and/or other materials provided with the distribution.
 * 
 * 3. Neither the name of the nanohttpd nor the names of its contributors
 *    may be used to endorse or promote products derived from this software without
 *    specific prior written permission.
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 * 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,
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import static org.junit.Assert.fail;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.junit.Test;

import fi.iki.elonen.NanoHTTPD;

public class ShutdownTest {

    private class TestServer extends NanoHTTPD {

        public TestServer() {
            super(8092);
        }

        @Override
        public Response serve(IHTTPSession session) {
            return newFixedLengthResponse("Whatever");
        }
    }

    @Test
    public void connectionsAreClosedWhenServerStops() throws IOException {
        TestServer server = new TestServer();
        server.start();
        makeRequest();
        server.stop();
        try {
            makeRequest();
            fail("Connection should be closed!");
        } catch (IOException e) {
            // Expected exception
        }
    }

    private void makeRequest() throws MalformedURLException, IOException {
        HttpURLConnection connection = (HttpURLConnection) new URL("http://localhost:8092/").openConnection();
        // Keep-alive seems to be on by default, but just in case that changes.
        connection.addRequestProperty("Connection", "keep-alive");
        InputStream in = connection.getInputStream();
        while (in.available() > 0) {
            in.read();
        }
        in.close();
    }

}