Java SSL test

Main.java

import java.io.InputStream;
import java.net.URL;
import java.util.Map.Entry;

public final class Main {
	public static void main(String... args) throws Exception {
		printSSLProperties();
		URL url = new URL("https://dv3.datavalidation.com/");
		System.out.println("Downloaded " + readAll(url.openStream()) + " bytes");
	}

	private static final long readAll(InputStream ins) throws Exception {
		long result = 0;
		byte[] buf = new byte[1024];
		while (true) {
			int r = ins.read(buf);
			if (r == -1) {
				break;
			}
			result += r;
		}
		return result;
	}

	private static void printSSLProperties() {
		for (Entry<Object, Object> entry : System.getProperties().entrySet()) {
			String key = entry.getKey().toString();
			if (!key.contains("ssl")) {
				continue;
			}
			System.out.println(key + "=" + entry.getValue());
		}
	}
}